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Wang R, Kato F, Watson RY, Beedle AM, Call JA, Tsunoda Y, Noda T, Tsuchiya T, Kashima M, Hattori A, Ito T. The RNA-binding protein Msi2 regulates autophagy during myogenic differentiation. Life Sci Alliance 2024; 7:e202302016. [PMID: 38373797 PMCID: PMC10876439 DOI: 10.26508/lsa.202302016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 01/31/2024] [Accepted: 02/05/2024] [Indexed: 02/21/2024] Open
Abstract
Skeletal muscle development is a highly ordered process orchestrated transcriptionally by the myogenic regulatory factors. However, the downstream molecular mechanisms of myogenic regulatory factor functions in myogenesis are not fully understood. Here, we identified the RNA-binding protein Musashi2 (Msi2) as a myogenin target gene and a post-transcriptional regulator of myoblast differentiation. Msi2 knockdown in murine myoblasts blocked differentiation without affecting the expression of MyoD or myogenin. Msi2 overexpression was also sufficient to promote myoblast differentiation and myocyte fusion. Msi2 loss attenuated autophagosome formation via down-regulation of the autophagic protein MAPL1LC3/ATG8 (LC3) at the early phase of myoblast differentiation. Moreover, forced activation of autophagy effectively suppressed the differentiation defects incurred by Msi2 loss. Consistent with its functions in myoblasts in vitro, mice deficient for Msi2 exhibited smaller limb skeletal muscles, poorer exercise performance, and muscle fiber-type switching in vivo. Collectively, our study demonstrates that Msi2 is a novel regulator of mammalian myogenesis and establishes a new functional link between muscular development and autophagy regulation.
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Affiliation(s)
- Ruochong Wang
- https://ror.org/02kpeqv85 Institute for Life and Medical Sciences, Kyoto University, Kyoto, Japan
- https://ror.org/00te3t702 Department of Biochemistry and Molecular Biology, The University of Georgia, Athens, GA, USA
| | - Futaba Kato
- https://ror.org/02kpeqv85 Institute for Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Rio Yasui Watson
- https://ror.org/02kpeqv85 Institute for Life and Medical Sciences, Kyoto University, Kyoto, Japan
- https://ror.org/00te3t702 Department of Biochemistry and Molecular Biology, The University of Georgia, Athens, GA, USA
| | - Aaron M Beedle
- https://ror.org/00te3t702 Department of Pharmaceutical and Biomedical Sciences, The University of Georgia, Athens, GA, USA
- Department of Pharmaceutical Sciences, SUNY Binghamton University, New York, NY, USA
| | - Jarrod A Call
- https://ror.org/00te3t702 Department of Physiology & Pharmacology, The University of Georgia, Athens, GA, USA
| | - Yugo Tsunoda
- https://ror.org/02kpeqv85 Institute for Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Takeshi Noda
- https://ror.org/02kpeqv85 Institute for Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Takaho Tsuchiya
- Bioinformatics Laboratory, Institute of Medicine, and Center for Artificial Intelligence Research, University of Tsukuba, Tsukuba, Japan
| | - Makoto Kashima
- College of Science and Engineering, Aoyama Gakuin University, Kanagawa, Japan
- Department of Molecular Biology, Faculty of Science, Toho University, Chiba, Japan
| | - Ayuna Hattori
- https://ror.org/02kpeqv85 Institute for Life and Medical Sciences, Kyoto University, Kyoto, Japan
- https://ror.org/00te3t702 Department of Biochemistry and Molecular Biology, The University of Georgia, Athens, GA, USA
| | - Takahiro Ito
- https://ror.org/02kpeqv85 Institute for Life and Medical Sciences, Kyoto University, Kyoto, Japan
- https://ror.org/00te3t702 Department of Biochemistry and Molecular Biology, The University of Georgia, Athens, GA, USA
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2
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Miyoshi G, Ueta Y, Yagasaki Y, Kishi Y, Fishell G, Machold RP, Miyata M. Developmental trajectories of GABAergic cortical interneurons are sequentially modulated by dynamic FoxG1 expression levels. Proc Natl Acad Sci U S A 2024; 121:e2317783121. [PMID: 38588430 PMCID: PMC11032493 DOI: 10.1073/pnas.2317783121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 03/04/2024] [Indexed: 04/10/2024] Open
Abstract
GABAergic inhibitory interneurons, originating from the embryonic ventral forebrain territories, traverse a convoluted migratory path to reach the neocortex. These interneuron precursors undergo sequential phases of tangential and radial migration before settling into specific laminae during differentiation. Here, we show that the developmental trajectory of FoxG1 expression is dynamically controlled in these interneuron precursors at critical junctures of migration. By utilizing mouse genetic strategies, we elucidate the pivotal role of precise changes in FoxG1 expression levels during interneuron specification and migration. Our findings underscore the gene dosage-dependent function of FoxG1, aligning with clinical observations of FOXG1 haploinsufficiency and duplication in syndromic forms of autism spectrum disorders. In conclusion, our results reveal the finely tuned developmental clock governing cortical interneuron development, driven by temporal dynamics and the dose-dependent actions of FoxG1.
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Affiliation(s)
- Goichi Miyoshi
- Department of Developmental Genetics and Behavioral Neuroscience, Gunma University Graduate School of Medicine, Maebashi city, Gunma371-8511, Japan
- Department of Neurophysiology, Tokyo Women’s Medical University, Shinjuku, Tokyo162-8666, Japan
- Department of Neuroscience and Physiology, Neuroscience Institute, New York University Grossman School of Medicine, New York, NY10016
| | - Yoshifumi Ueta
- Department of Neurophysiology, Tokyo Women’s Medical University, Shinjuku, Tokyo162-8666, Japan
| | - Yuki Yagasaki
- Department of Neurophysiology, Tokyo Women’s Medical University, Shinjuku, Tokyo162-8666, Japan
| | - Yusuke Kishi
- Laboratory of Molecular Neurobiology, Institute for Quantitative Biosciences, University of Tokyo, Bunkyo, Tokyo113-0032, Japan
- Laboratory of Molecular Biology, Graduate School of Pharmaceutical Sciences, University of Tokyo, Bunkyo, Tokyo113-0033, Japan
| | - Gord Fishell
- Department of Neuroscience and Physiology, Neuroscience Institute, New York University Grossman School of Medicine, New York, NY10016
- Department of Neurobiology, Blavatnik Institute, Harvard Medical School, Boston, MA02115
- Stanley Center at the Broad Institute, Cambridge, MA02142
| | - Robert P. Machold
- Department of Neuroscience and Physiology, Neuroscience Institute, New York University Grossman School of Medicine, New York, NY10016
| | - Mariko Miyata
- Department of Neurophysiology, Tokyo Women’s Medical University, Shinjuku, Tokyo162-8666, Japan
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Horiba K, Aso S, Oda R, Tateishi Y, Ura K, Kuroda M. Complete genome sequence of Selenomonas species strain TAMA-11512, isolated from blood culture of a septic patient. Microbiol Resour Announc 2024; 13:e0007024. [PMID: 38466101 PMCID: PMC11008186 DOI: 10.1128/mra.00070-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 02/29/2024] [Indexed: 03/12/2024] Open
Abstract
We report the complete sequence of Selenomonas species strain TAMA-11512, isolated from the blood culture of a septic patient. The phylogeny and average nucleotide identity show that the strain TAMA-11512 is considered a novel bacterial species in Selenomonas genus.
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Affiliation(s)
- Kazuhiro Horiba
- Laboratory of Bacterial Genomics, Pathogen Genomics Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Sakura Aso
- Department of Clinical Laboratory, Tokyo Metropolitan Tama Medical Center, Tokyo, Japan
| | - Rentaro Oda
- Department of Infectious Diseases, Tokyo Metropolitan Tama Medical Center, Tokyo, Japan
| | - Yoshinori Tateishi
- Department of Infectious Diseases, Tokyo Metropolitan Tama Medical Center, Tokyo, Japan
| | - Kuniko Ura
- Department of Clinical Laboratory, Tokyo Metropolitan Tama Medical Center, Tokyo, Japan
| | - Makoto Kuroda
- Laboratory of Bacterial Genomics, Pathogen Genomics Center, National Institute of Infectious Diseases, Tokyo, Japan
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Ito T, Saito A, Kamikawa Y, Nakazawa N, Imaizumi K. AIbZIP/CREB3L4 Promotes Cell Proliferation via the SKP2-p27 Axis in Luminal Androgen Receptor Subtype Triple-Negative Breast Cancer. Mol Cancer Res 2024; 22:373-385. [PMID: 38236913 PMCID: PMC10985479 DOI: 10.1158/1541-7786.mcr-23-0629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 12/05/2023] [Accepted: 01/16/2024] [Indexed: 04/04/2024]
Abstract
Breast cancer ranks first in incidence and fifth in cancer-related deaths among all types of cancer globally. Among breast cancer, triple-negative breast cancer (TNBC) has few known therapeutic targets and a poor prognosis. Therefore, new therapeutic targets and strategies against TNBC are required. We found that androgen-induced basic leucine zipper (AIbZIP), also known as cyclic AMP-responsive element-binding protein 3-like protein 4 (CREB3L4), which is encoded by Creb3l4, is highly upregulated in a particular subtype of TNBC, luminal androgen receptor (LAR) subtype. We analyzed the function of AIbZIP through depletion of AIbZIP by siRNA knockdown in LAR subtype TNBC cell lines, MFM223 and MDAMB453. In AIbZIP-depleted cells, the proliferation ratios of cells were greatly suppressed. Moreover, G1-S transition was inhibited in AIbZIP-depleted cells. We comprehensively analyzed the expression levels of proteins that regulate G1-S transition and found that p27 was specifically upregulated in AIbZIP-depleted cells. Furthermore, we identified that this p27 downregulation was caused by protein degradation modulated by the ubiquitin-proteasome system via F-box protein S-phase kinase-associated protein 2 (SKP2) upregulation. Our findings demonstrate that AIbZIP is a novel p27-SKP2 pathway-regulating factor and a potential molecule that contributes to LAR subtype TNBC progression. IMPLICATIONS This research shows a new mechanism for the proliferation of LAR subtype TNBC regulated by AIbZIP, that may provide novel insight into the LAR subtype TNBC progression and the molecular mechanisms involved in cell proliferation.
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Affiliation(s)
- Taichi Ito
- Department of Biochemistry, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Atsushi Saito
- Department of Biochemistry, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Yasunao Kamikawa
- Department of Biochemistry, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Nayuta Nakazawa
- Department of Biochemistry, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kazunori Imaizumi
- Department of Biochemistry, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
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5
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Kuchitsu Y, Taguchi T. STINGing organelle surface with acid. EMBO Rep 2024; 25:1708-1710. [PMID: 38503877 PMCID: PMC11015003 DOI: 10.1038/s44319-024-00120-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 02/19/2024] [Accepted: 03/11/2024] [Indexed: 03/21/2024] Open
Abstract
This article reflects on recent findings on the ion channel function of STING in the context of "conjugation of ATG8 (LC3) to single membranes (CASM)".
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Affiliation(s)
- Yoshihiko Kuchitsu
- Laboratory of Organelle Pathophysiology, Department of Integrative Life Sciences, Graduate School of Life Sciences, Tohoku University, Sendai, Japan.
| | - Tomohiko Taguchi
- Laboratory of Organelle Pathophysiology, Department of Integrative Life Sciences, Graduate School of Life Sciences, Tohoku University, Sendai, Japan.
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6
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Yamamoto T, Hayashida T, Masugi Y, Oshikawa K, Hayakawa N, Itoh M, Nishime C, Suzuki M, Nagayama A, Kawai Y, Hishiki T, Matsuura T, Naito Y, Kubo A, Yamamoto A, Yoshioka Y, Kurahori T, Nagasaka M, Takizawa M, Takano N, Kawakami K, Sakamoto M, Wakui M, Yamamoto T, Kitagawa Y, Kabe Y, Horisawa K, Suzuki A, Matsumoto M, Suematsu M. PRMT1 Sustains De Novo Fatty Acid Synthesis by Methylating PHGDH to Drive Chemoresistance in Triple-Negative Breast Cancer. Cancer Res 2024; 84:1065-1083. [PMID: 38383964 PMCID: PMC10982647 DOI: 10.1158/0008-5472.can-23-2266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 12/20/2023] [Accepted: 02/05/2024] [Indexed: 02/23/2024]
Abstract
Triple-negative breast cancer (TNBC) chemoresistance hampers the ability to effectively treat patients. Identification of mechanisms driving chemoresistance can lead to strategies to improve treatment. Here, we revealed that protein arginine methyltransferase-1 (PRMT1) simultaneously methylates D-3-phosphoglycerate dehydrogenase (PHGDH), a critical enzyme in serine synthesis, and the glycolytic enzymes PFKFB3 and PKM2 in TNBC cells. 13C metabolic flux analyses showed that PRMT1-dependent methylation of these three enzymes diverts glucose toward intermediates in the serine-synthesizing and serine/glycine cleavage pathways, thereby accelerating the production of methyl donors in TNBC cells. Mechanistically, PRMT1-dependent methylation of PHGDH at R54 or R20 activated its enzymatic activity by stabilizing 3-phosphoglycerate binding and suppressing polyubiquitination. PRMT1-mediated PHGDH methylation drove chemoresistance independently of glutathione synthesis. Rather, activation of the serine synthesis pathway supplied α-ketoglutarate and citrate to increase palmitate levels through activation of fatty acid synthase (FASN). Increased palmitate induced protein S-palmitoylation of PHGDH and FASN to further enhance fatty acid synthesis in a PRMT1-dependent manner. Loss of PRMT1 or pharmacologic inhibition of FASN or protein S-palmitoyltransferase reversed chemoresistance in TNBC. Furthermore, IHC coupled with imaging MS in clinical TNBC specimens substantiated that PRMT1-mediated methylation of PHGDH, PFKFB3, and PKM2 correlates with chemoresistance and that metabolites required for methylation and fatty acid synthesis are enriched in TNBC. Together, these results suggest that enhanced de novo fatty acid synthesis mediated by coordinated protein arginine methylation and protein S-palmitoylation is a therapeutic target for overcoming chemoresistance in TNBC. SIGNIFICANCE PRMT1 promotes chemoresistance in TNBC by methylating metabolic enzymes PFKFB3, PKM2, and PHGDH to augment de novo fatty acid synthesis, indicating that targeting this axis is a potential treatment strategy.
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Affiliation(s)
- Takehiro Yamamoto
- Department of Biochemistry, Keio University School of Medicine, Tokyo, Japan
| | - Tetsu Hayashida
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Yohei Masugi
- Department of Pathology, Keio University School of Medicine, Tokyo, Japan
| | - Kiyotaka Oshikawa
- Department of Omics and Systems Biology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Noriyo Hayakawa
- Central Institute for Experimental Medicine and Life Science, Kawasaki, Japan
| | - Mai Itoh
- Central Institute for Experimental Medicine and Life Science, Kawasaki, Japan
| | - Chiyoko Nishime
- Central Institute for Experimental Medicine and Life Science, Kawasaki, Japan
| | - Masami Suzuki
- Central Institute for Experimental Medicine and Life Science, Kawasaki, Japan
| | - Aiko Nagayama
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Yuko Kawai
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Takako Hishiki
- Department of Biochemistry, Keio University School of Medicine, Tokyo, Japan
| | - Tomomi Matsuura
- Clinical Translational Research Center, Keio University Hospital, Tokyo, Japan
| | - Yoshiko Naito
- Clinical Translational Research Center, Keio University Hospital, Tokyo, Japan
| | - Akiko Kubo
- Department of Biochemistry, Keio University School of Medicine, Tokyo, Japan
| | - Arisa Yamamoto
- Department of Biochemistry, Keio University School of Medicine, Tokyo, Japan
| | - Yujiro Yoshioka
- Department of Biochemistry, Keio University School of Medicine, Tokyo, Japan
| | - Tomokazu Kurahori
- Department of Biochemistry, Keio University School of Medicine, Tokyo, Japan
| | - Misa Nagasaka
- Department of Biochemistry, Keio University School of Medicine, Tokyo, Japan
| | - Minako Takizawa
- Department of Biochemistry, Keio University School of Medicine, Tokyo, Japan
| | - Naoharu Takano
- Department of Biochemistry, Keio University School of Medicine, Tokyo, Japan
| | - Koji Kawakami
- Department of Biochemistry, Keio University School of Medicine, Tokyo, Japan
| | - Michiie Sakamoto
- Department of Pathology, Keio University School of Medicine, Tokyo, Japan
| | - Masatoshi Wakui
- Department of Laboratory Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Takushi Yamamoto
- Solutions COE Analytical & Measuring Instruments Division, Shimadzu Corporation, Kyoto, Japan
| | - Yuko Kitagawa
- Department of Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Yasuaki Kabe
- Department of Biochemistry, Keio University School of Medicine, Tokyo, Japan
| | - Kenichi Horisawa
- Division of Organogenesis and Regeneration, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - Atsushi Suzuki
- Division of Organogenesis and Regeneration, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - Masaki Matsumoto
- Department of Omics and Systems Biology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Makoto Suematsu
- Central Institute for Experimental Medicine and Life Science, Kawasaki, Japan
- Keio University WPI-Bio2Q Research Center, Tokyo, Japan
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Sharif A, Matsumoto J, Choijiljav C, Badarch A, Setogawa T, Nishijo H, Nishimaru H. Characterization of Ultrasonic Vocalization-Modulated Neurons in Rat Motor Cortex Based on Their Activity Modulation and Axonal Projection to the Periaqueductal Gray. eNeuro 2024; 11:ENEURO.0452-23.2024. [PMID: 38490744 PMCID: PMC10988357 DOI: 10.1523/eneuro.0452-23.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/13/2023] [Accepted: 01/02/2024] [Indexed: 03/17/2024] Open
Abstract
Vocalization, a means of social communication, is prevalent among many species, including humans. Both rats and mice use ultrasonic vocalizations (USVs) in various social contexts and affective states. The motor cortex is hypothesized to be involved in precisely controlling USVs through connections with critical regions of the brain for vocalization, such as the periaqueductal gray matter (PAG). However, it is unclear how neurons in the motor cortex are modulated during USVs. Moreover, the relationship between USV modulation of neurons and anatomical connections from the motor cortex to PAG is also not clearly understood. In this study, we first characterized the activity patterns of neurons in the primary and secondary motor cortices during emission of USVs in rats using large-scale electrophysiological recordings. We also examined the axonal projection of the motor cortex to PAG using retrograde labeling and identified two clusters of PAG-projecting neurons in the anterior and posterior parts of the motor cortex. The neural activity patterns around the emission of USVs differed between the anterior and posterior regions, which were divided based on the distribution of PAG-projecting neurons in the motor cortex. Furthermore, using optogenetic tagging, we recorded the USV modulation of PAG-projecting neurons in the posterior part of the motor cortex and found that they showed predominantly sustained excitatory responses during USVs. These results contribute to our understanding of the involvement of the motor cortex in the generation of USV at the neuronal and circuit levels.
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Affiliation(s)
- Aamir Sharif
- Department of System Emotional Science, Faculty of Medicine, University of Toyama, Toyama 930-0194, Japan
| | - Jumpei Matsumoto
- Department of System Emotional Science, Faculty of Medicine, University of Toyama, Toyama 930-0194, Japan
- Research Center for Idling Brain Science, University of Toyama, Toyama 930-0194, Japan
| | - Chinzorig Choijiljav
- Department of System Emotional Science, Faculty of Medicine, University of Toyama, Toyama 930-0194, Japan
| | - Amarbayasgalant Badarch
- Department of System Emotional Science, Faculty of Medicine, University of Toyama, Toyama 930-0194, Japan
| | - Tsuyoshi Setogawa
- Department of System Emotional Science, Faculty of Medicine, University of Toyama, Toyama 930-0194, Japan
- Research Center for Idling Brain Science, University of Toyama, Toyama 930-0194, Japan
| | - Hisao Nishijo
- Department of System Emotional Science, Faculty of Medicine, University of Toyama, Toyama 930-0194, Japan
- Research Center for Idling Brain Science, University of Toyama, Toyama 930-0194, Japan
- Department of Sport and Health Sciences, Faculty of Human Sciences, University of East Asia, Shimonoseki 751-0807, Japan
| | - Hiroshi Nishimaru
- Department of System Emotional Science, Faculty of Medicine, University of Toyama, Toyama 930-0194, Japan
- Research Center for Idling Brain Science, University of Toyama, Toyama 930-0194, Japan
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8
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Uneme Y, Maeda R, Nakayama G, Narita H, Takeda N, Hiramatsu R, Nishihara H, Nakato R, Kanai Y, Araki K, Siomi MC, Yamanaka S. Morc1 reestablishes H3K9me3 heterochromatin on piRNA-targeted transposons in gonocytes. Proc Natl Acad Sci U S A 2024; 121:e2317095121. [PMID: 38502704 PMCID: PMC10990106 DOI: 10.1073/pnas.2317095121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 01/23/2024] [Indexed: 03/21/2024] Open
Abstract
To maintain fertility, male mice re-repress transposable elements (TEs) that were de-silenced in the early gonocytes before their differentiation into spermatogonia. However, the mechanism of TE silencing re-establishment remains unknown. Here, we found that the DNA-binding protein Morc1, in cooperation with the methyltransferase SetDB1, deposits the repressive histone mark H3K9me3 on a large fraction of activated TEs, leading to heterochromatin. Morc1 also triggers DNA methylation, but TEs targeted by Morc1-driven DNA methylation only slightly overlapped with those repressed by Morc1/SetDB1-dependent heterochromatin formation, suggesting that Morc1 silences TEs in two different manners. In contrast, TEs regulated by Morc1 and Miwi2, the nuclear PIWI-family protein, almost overlapped. Miwi2 binds to PIWI-interacting RNAs (piRNAs) that base-pair with TE mRNAs via sequence complementarity, while Morc1 DNA binding is not sequence specific, suggesting that Miwi2 selects its targets, and then, Morc1 acts to repress them with cofactors. A high-ordered mechanism of TE repression in gonocytes has been identified.
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Affiliation(s)
- Yuta Uneme
- Department of Biophysics and Biochemistry, Faculty of Science, The University of Tokyo, Tokyo113-0032, Japan
| | - Ryu Maeda
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo113-0032, Japan
| | - Gen Nakayama
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo113-0032, Japan
| | - Haruka Narita
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo113-0032, Japan
| | - Naoki Takeda
- Division of Developmental Genetics, Institute of Resource Development and Analysis, Kumamoto University, Kumamoto860-0811, Japan
| | - Ryuji Hiramatsu
- Department of Veterinary Anatomy, The University of Tokyo, Tokyo113-8657, Japan
| | - Hidenori Nishihara
- Department of Advanced Bioscience, Graduate School of Agriculture, Kindai University, Nara631-8505, Japan
| | - Ryuichiro Nakato
- Institute for Quantitative Biosciences, The University of Tokyo, Tokyo113-0032, Japan
| | - Yoshiakira Kanai
- Department of Veterinary Anatomy, The University of Tokyo, Tokyo113-8657, Japan
| | - Kimi Araki
- Division of Developmental Genetics, Institute of Resource Development and Analysis, Kumamoto University, Kumamoto860-0811, Japan
- Faculty of Life Sciences, Center for Metabolic Regulation of Healthy Aging, Kumamoto University, Honjo, Kumamoto860-8556, Japan
| | - Mikiko C. Siomi
- Department of Biophysics and Biochemistry, Faculty of Science, The University of Tokyo, Tokyo113-0032, Japan
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo113-0032, Japan
| | - Soichiro Yamanaka
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo113-0032, Japan
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9
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Nakamura T, Ohyama C, Sakamoto M, Toma T, Tateishi H, Matsuo M, Chirifu M, Ikemizu S, Morioka H, Fujita M, Inoue JI, Yamagata Y. TIFAB regulates the TIFA-TRAF6 signaling pathway involved in innate immunity by forming a heterodimer complex with TIFA. Proc Natl Acad Sci U S A 2024; 121:e2318794121. [PMID: 38442163 PMCID: PMC10945758 DOI: 10.1073/pnas.2318794121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Accepted: 02/07/2024] [Indexed: 03/07/2024] Open
Abstract
Nuclear factor κB (NF-κB) is activated by various inflammatory and infectious molecules and is involved in immune responses. It has been elucidated that ADP-β-D-manno-heptose (ADP-Hep), a metabolite in gram-negative bacteria, activates NF-κB through alpha-kinase 1 (ALPK1)-TIFA-TRAF6 signaling. ADP-Hep stimulates the kinase activity of ALPK1 for TIFA phosphorylation. Complex formation between phosphorylation-dependent TIFA oligomer and TRAF6 promotes the polyubiquitination of TRAF6 for NF-κB activation. TIFAB, a TIFA homolog lacking a phosphorylation site and a TRAF6 binding motif, is a negative regulator of TIFA-TRAF6 signaling and is implicated in myeloid diseases. TIFAB is indicated to regulate TIFA-TRAF6 signaling through interactions with TIFA and TRAF6; however, little is known about its biological function. We demonstrated that TIFAB forms a complex not with the TIFA dimer, an intrinsic form of TIFA involved in NF-κB activation, but with monomeric TIFA. The structural analysis of the TIFA/TIFAB complex and the biochemical and cell-based analyses showed that TIFAB forms a stable heterodimer with TIFA, inhibits TIFA dimer formation, and suppresses TIFA-TRAF6 signaling. The resultant TIFA/TIFAB complex is a "pseudo-TIFA dimer" lacking the phosphorylation site and TRAF6 binding motif in TIFAB and cannot form the orderly structure as proposed for the phosphorylated TIFA oligomer involved in NF-κB activation. This study elucidated the molecular and structural basis for the regulation of TIFA-TRAF6 signaling by TIFAB.
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Affiliation(s)
- Teruya Nakamura
- Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto862-0973, Japan
| | - Chiaki Ohyama
- School of Pharmacy, Kumamoto University, Kumamoto862-0973, Japan
| | - Madoka Sakamoto
- School of Pharmacy, Kumamoto University, Kumamoto862-0973, Japan
| | - Tsugumasa Toma
- Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto862-0973, Japan
| | - Hiroshi Tateishi
- Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto862-0973, Japan
| | - Mihoko Matsuo
- Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto862-0973, Japan
| | - Mami Chirifu
- Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto862-0973, Japan
| | - Shinji Ikemizu
- Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto862-0973, Japan
| | - Hiroshi Morioka
- Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto862-0973, Japan
| | - Mikako Fujita
- Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto862-0973, Japan
| | - Jun-ichiro Inoue
- The University of Tokyo Pandemic Preparedness, Infection and Advanced Research Center (UTOPIA), 4-6-1 Shirokanedai, Minato-ku, Tokyo108-0071, Japan
| | - Yuriko Yamagata
- Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto862-0973, Japan
- Shokei University and Shokei University Junior College, Kumamoto862-8678, Japan
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10
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Abstract
Ferroptosis, a regulated cell death hallmarked by excessive lipid peroxidation, is implicated in various (patho)physiological contexts. During ferroptosis, lipid peroxidation leads to a diverse change in membrane properties and the dysregulation of ion homeostasis via the cation channels, ultimately resulting in plasma membrane rupture. This review illuminates cellular membrane dynamics and cation handling in ferroptosis regulation.
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Affiliation(s)
- Yusuke Hirata
- Laboratory of Health Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Sendai, Japan
| | - Eikan Mishima
- Institute of Metabolism and Cell Death, Helmholtz Zentrum München, Neuherberg, Germany
- Division of Nephrology, Rheumatology and Endocrinology, Tohoku University Graduate School of Medicine, Sendai, Japan
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11
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Yamano K, Sawada M, Kikuchi R, Nagataki K, Kojima W, Endo R, Kinefuchi H, Sugihara A, Fujino T, Watanabe A, Tanaka K, Hayashi G, Murakami H, Matsuda N. Optineurin provides a mitophagy contact site for TBK1 activation. EMBO J 2024; 43:754-779. [PMID: 38287189 PMCID: PMC10907724 DOI: 10.1038/s44318-024-00036-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 01/09/2024] [Accepted: 01/11/2024] [Indexed: 01/31/2024] Open
Abstract
Tank-binding kinase 1 (TBK1) is a Ser/Thr kinase that is involved in many intracellular processes, such as innate immunity, cell cycle, and apoptosis. TBK1 is also important for phosphorylating the autophagy adaptors that mediate the selective autophagic removal of damaged mitochondria. However, the mechanism by which PINK1-Parkin-mediated mitophagy activates TBK1 remains largely unknown. Here, we show that the autophagy adaptor optineurin (OPTN) provides a unique platform for TBK1 activation. Both the OPTN-ubiquitin and the OPTN-pre-autophagosomal structure (PAS) interaction axes facilitate assembly of the OPTN-TBK1 complex at a contact sites between damaged mitochondria and the autophagosome formation sites. At this assembly point, a positive feedback loop for TBK1 activation is initiated that accelerates hetero-autophosphorylation of the protein. Expression of monobodies engineered here to bind OPTN impaired OPTN accumulation at contact sites, as well as the subsequent activation of TBK1, thereby inhibiting mitochondrial degradation. Taken together, these data show that a positive and reciprocal relationship between OPTN and TBK1 initiates autophagosome biogenesis on damaged mitochondria.
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Affiliation(s)
- Koji Yamano
- Department of Biomolecular Pathogenesis, Medical Research Institute, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan.
- Ubiquitin Project, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kamikitazawa, Setagaya-ku, Tokyo, 156-8506, Japan.
| | - Momoha Sawada
- Department of Biomolecular Pathogenesis, Medical Research Institute, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Reika Kikuchi
- Department of Biomolecular Pathogenesis, Medical Research Institute, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
- Ubiquitin Project, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kamikitazawa, Setagaya-ku, Tokyo, 156-8506, Japan
| | - Kafu Nagataki
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
| | - Waka Kojima
- Department of Biomolecular Pathogenesis, Medical Research Institute, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
- Ubiquitin Project, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kamikitazawa, Setagaya-ku, Tokyo, 156-8506, Japan
| | - Ryu Endo
- Department of Biomolecular Pathogenesis, Medical Research Institute, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Hiroki Kinefuchi
- Department of Biomolecular Pathogenesis, Medical Research Institute, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Atsushi Sugihara
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
| | - Tomoshige Fujino
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
| | - Aiko Watanabe
- Department of Biomolecular Pathogenesis, Medical Research Institute, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Keiji Tanaka
- Protein Metabolism Project, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kamikitazawa, Setagaya-ku, Tokyo, 156-8506, Japan
| | - Gosuke Hayashi
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
| | - Hiroshi Murakami
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan
| | - Noriyuki Matsuda
- Department of Biomolecular Pathogenesis, Medical Research Institute, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
- Ubiquitin Project, Tokyo Metropolitan Institute of Medical Science, 2-1-6 Kamikitazawa, Setagaya-ku, Tokyo, 156-8506, Japan
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12
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Shiratsuchi G, Konishi S, Yano T, Yanagihashi Y, Nakayama S, Katsuno T, Kashihara H, Tanaka H, Tsukita K, Suzuki K, Herawati E, Watanabe H, Hirai T, Yagi T, Kondoh G, Gotoh S, Tamura A, Tsukita S. Dual-color live imaging unveils stepwise organization of multiple basal body arrays by cytoskeletons. EMBO Rep 2024; 25:1176-1207. [PMID: 38316902 PMCID: PMC10933483 DOI: 10.1038/s44319-024-00066-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 12/13/2023] [Accepted: 12/15/2023] [Indexed: 02/07/2024] Open
Abstract
For mucociliary clearance of pathogens, tracheal multiciliated epithelial cells (MCCs) organize coordinated beating of cilia, which originate from basal bodies (BBs) with basal feet (BFs) on one side. To clarify the self-organizing mechanism of coordinated intracellular BB-arrays composed of a well-ordered BB-alignment and unidirectional BB-orientation, determined by the direction of BB to BF, we generated double transgenic mice with GFP-centrin2-labeled BBs and mRuby3-Cep128-labeled BFs for long-term, high-resolution, dual-color live-cell imaging in primary-cultured tracheal MCCs. At early timepoints of MCC differentiation, BB-orientation and BB-local alignment antecedently coordinated in an apical microtubule-dependent manner. Later during MCC differentiation, fluctuations in BB-orientation were restricted, and locally aligned BB-arrays were further coordinated to align across the entire cell (BB-global alignment), mainly in an apical intermediate-sized filament-lattice-dependent manner. Thus, the high coordination of the BB-array was established for efficient mucociliary clearance as the primary defense against pathogen infection, identifying apical cytoskeletons as potential therapeutic targets.
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Affiliation(s)
- Gen Shiratsuchi
- Advanced Comprehensive Research Organization, Teikyo University, Tokyo, Japan
- Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan
| | - Satoshi Konishi
- Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan
- Department of Respiratory Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
- Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan
- Department of Cell Biology, Duke University School of Medicine, Durham, NC, USA
| | - Tomoki Yano
- Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan
- Department of Organoid Medicine, Sakaguchi Laboratory, Keio University School of Medicine, Tokyo, Japan
| | | | - Shogo Nakayama
- Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan
- RIKEN Center for Biosystems Dynamics Research, Hyogo, Japan
| | - Tatsuya Katsuno
- Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan
- Center for Anatomical Studies, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hiroka Kashihara
- Advanced Comprehensive Research Organization, Teikyo University, Tokyo, Japan
- Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan
| | - Hiroo Tanaka
- Advanced Comprehensive Research Organization, Teikyo University, Tokyo, Japan
- Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan
- School of Medicine, Teikyo University, Tokyo, Japan
| | - Kazuto Tsukita
- Advanced Comprehensive Research Organization, Teikyo University, Tokyo, Japan
- Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan
- Department of Neurology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Koya Suzuki
- Advanced Comprehensive Research Organization, Teikyo University, Tokyo, Japan
- Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan
| | - Elisa Herawati
- Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan
- Faculty of Mathematics and Natural Sciences, Universitas Sebelas Maret, Surakarta, Central Java, Indonesia
| | - Hitomi Watanabe
- Institute for Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Toyohiro Hirai
- Department of Respiratory Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takeshi Yagi
- Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan
| | - Gen Kondoh
- Institute for Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Shimpei Gotoh
- Department of Respiratory Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
- Center for iPS Cell Research and Application, Kyoto University, Kyoto, Japan
| | - Atsushi Tamura
- Advanced Comprehensive Research Organization, Teikyo University, Tokyo, Japan.
- Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan.
- School of Medicine, Teikyo University, Tokyo, Japan.
| | - Sachiko Tsukita
- Advanced Comprehensive Research Organization, Teikyo University, Tokyo, Japan.
- Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan.
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13
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Yoshida T, Kasuya Y, Yamamoto H, Kawai G, Hanaki KI, Matano T, Masuda T. HIV-1 RNAs whose transcription initiates from the third deoxyguanosine of GGG tract in the 5' long terminal repeat serve as a dominant genome for efficient provirus DNA formation. J Virol 2024; 98:e0182523. [PMID: 38289105 PMCID: PMC10878063 DOI: 10.1128/jvi.01825-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 12/20/2023] [Indexed: 02/21/2024] Open
Abstract
Unspliced HIV-1 RNAs function as messenger RNAs for Gag or Gag-Pol polyproteins and progeny genomes packaged into virus particles. Recently, it has been reported that fate of the RNAs might be primarily determined, depending on transcriptional initiation sites among three consecutive deoxyguanosine residues (GGG tract) downstream of TATA-box in the 5' long terminal repeat (LTR). Although HIV-1 RNA transcription starts mostly from the first deoxyguanosine of the GGG tract and often from the second or third deoxyguanosine, RNAs beginning with one guanosine (G1-form RNAs), whose transcription initiates from the third deoxyguanosine, were predominant in HIV-1 particles. Despite selective packaging of G1-form RNAs into virus particles, its biological impact during viral replication remains to be determined. In this study, we revealed that G1-form RNAs are primarily selected as a template for provirus DNA rather than other RNAs. In competitions between HIV-1 and lentiviral vector transcripts in virus-producing cells, approximately 80% of infectious particles were found to generate provirus using HIV-1 transcripts, while lentiviral vector transcripts were conversely selected when we used HIV-1 mutants in which the third deoxyguanosine in the GGG tract was replaced with deoxythymidine or deoxycytidine (GGT or GGC mutants, respectively). In the other analyses of proviral sequences after infection with an HIV-1 mutant in which the GGG tract in 3' LTR was replaced with TTT, most proviral sequences of the GGG-tract region in 5' LTR were found to be TTG, which is reasonably generated using the G1-form transcripts. Our results indicate that the G1-form RNAs serve as a dominant genome to establish provirus DNA.IMPORTANCESince the promoter for transcribing HIV-1 RNA is unique, all viral elements including genomic RNA and viral proteins have to be generated by the unique transcripts through ingenious mechanisms including RNA splicing and frameshifting during protein translation. Previous studies suggested a new mechanism for diversification of HIV-1 RNA functions by heterogeneous transcriptional initiation site usage; HIV-1 RNAs whose transcription initiates from a certain nucleotide were predominant in virus particles. In this study, we established two methods to analyze heterogenous transcriptional initiation site usage by HIV-1 during viral infection and showed that RNAs beginning with one guanosine (G1-form RNAs), whose transcription initiates from the third deoxyguanosine of the GGG tract in 5' LTR, were primarily selected as viral genome in infectious particles and thus are used as a template to generate provirus for continuous replication. This study provides insights into the mechanism for diversification of unspliced RNA functions and requisites of lentivirus infectivity.
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Affiliation(s)
- Takeshi Yoshida
- Management Department of Biosafety, Laboratory Animal, and Pathogen Bank, National Institute of Infectious Diseases, Tokyo, Japan
- AIDS Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Yuho Kasuya
- AIDS Research Center, National Institute of Infectious Diseases, Tokyo, Japan
- Department of Molecular Virology, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Hiroyuki Yamamoto
- AIDS Research Center, National Institute of Infectious Diseases, Tokyo, Japan
- Department of Biomedicine, University Hospital Basel, Basel, Switzerland
| | - Gota Kawai
- Department of Life Science, Faculty of Advanced Engineering, Chiba Institute of Technology, Chiba, Japan
| | - Ken-ichi Hanaki
- Management Department of Biosafety, Laboratory Animal, and Pathogen Bank, National Institute of Infectious Diseases, Tokyo, Japan
| | - Tetsuro Matano
- AIDS Research Center, National Institute of Infectious Diseases, Tokyo, Japan
- Institute of Medical Science, The University of Tokyo, Tokyo, Japan
- Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto, Japan
| | - Takao Masuda
- Department of Life Science, Faculty of Advanced Engineering, Chiba Institute of Technology, Chiba, Japan
- Graduate school of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
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14
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Takami M, Aoki T, Nishimura K, Tanaka H, Onodera A, Motohashi S. Anti-Vα24Jα18 TCR Antibody Tunes iNKT Cell Responses to Target and Kill CD1d-negative Tumors in an FcγRII (CD32)-dependent Manner. Cancer Res Commun 2024; 4:446-459. [PMID: 38319156 PMCID: PMC10875981 DOI: 10.1158/2767-9764.crc-23-0203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 12/12/2023] [Accepted: 02/01/2024] [Indexed: 02/07/2024]
Abstract
Invariant natural killer T (iNKT) cells play an essential role in antitumor immunity by exerting cytotoxicity and producing massive amounts of cytokines. iNKT cells express invariant T-cell receptors (TCR) to recognize their cognate glycolipid antigens such as α-galactosylceramide (α-GalCer) presented on CD1d. We recently reported that iNKT cells recognize CD1d-negative leukemia cell line K562 in a TCR-dependent manner. However, it remains controversial how iNKT cells use TCRs to recognize and exhibit cytotoxic activity toward CD1d-negative tumors cells without CD1d restriction. Here, we report that iNKT cells exerted cytotoxicity toward K562 cells via a carried over anti-Vα24 TCR mAb from positive selection by magnetic bead sorting. We found that addition of the anti-Vα24Jα18 TCR mAb (6B11 mAb) rendered iNKT cells cytotoxic to K562 cells in an FcγRII (CD32)-dependent manner. Moreover, iNKT cells treated with 6B11 mAb became cytotoxic to other CD32+ cell lines (U937 and Daudi). In addition, iNKT cells treated with 6B11 mAb suppressed K562 cell growth in a murine xenograft model in vivo. These data suggest that anti-iNKT TCR mAb treatment of iNKT cells can be applied as a therapeutic strategy to treat CD32+ cancers such as leukemia, lymphoma, and lung cancer. SIGNIFICANCE Our findings unveiled that iNKT cells recognize and kill CD1d-negative target tumors via the anti-iNKT TCR mAb bound to CD32 at the tumor site, thereby bridging iNKT cells and CD1d-negative tumors. These findings shed light on the therapeutic potential of anti-iNKT TCR mAbs in NKT cell-based immunotherapy to treat CD1d-negative CD32+ cancers.
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Affiliation(s)
- Mariko Takami
- Department of Medical Immunology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Takahiro Aoki
- Department of Medical Immunology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Katsuhiro Nishimura
- Department of Medical Immunology, Graduate School of Medicine, Chiba University, Chiba, Japan
- Department of Pediatric Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Hidekazu Tanaka
- Department of Medical Immunology, Graduate School of Medicine, Chiba University, Chiba, Japan
- Department of Thoracic Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Atsushi Onodera
- Institute for Advanced Academic Research, Chiba University, Chiba, Japan
- Research Institute for Disaster Medicine, Chiba University, Chiba, Japan
| | - Shinichiro Motohashi
- Department of Medical Immunology, Graduate School of Medicine, Chiba University, Chiba, Japan
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15
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Kawai A, Shropshire WC, Suzuki M, Borjan J, Aitken SL, Bachman WC, McElheny CL, Bhatti MM, Shields RK, Shelburne SA, Doi Y. Structural insights into the molecular mechanism of high-level ceftazidime-avibactam resistance conferred by CMY-185. mBio 2024; 15:e0287423. [PMID: 38179965 PMCID: PMC10865806 DOI: 10.1128/mbio.02874-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 11/27/2023] [Indexed: 01/06/2024] Open
Abstract
β-Lactamases can accumulate stepwise mutations that increase their resistance profiles to the latest β-lactam agents. CMY-185 is a CMY-2-like β-lactamase and was identified in an Escherichia coli clinical strain isolated from a patient who underwent treatment with ceftazidime-avibactam. CMY-185, possessing four amino acid substitutions of A114E, Q120K, V211S, and N346Y relative to CMY-2, confers high-level ceftazidime-avibactam resistance, and accumulation of the substitutions incrementally enhances the level of resistance to this agent. However, the functional role of each substitution and their interplay in enabling ceftazidime-avibactam resistance remains unknown. Through biochemical and structural analysis, we present the molecular basis for the enhanced ceftazidime hydrolysis and impaired avibactam inhibition conferred by CMY-185. The substituted Y346 residue is a major driver of the functional evolution as it rejects primary avibactam binding due to the steric hindrance and augments oxyimino-cephalosporin hydrolysis through a drastic structural change, rotating the side chain of Y346 and then disrupting the H-10 helix structure. The other substituted residues E114 and K120 incrementally contribute to rejection of avibactam inhibition, while S211 stimulates the turnover rate of the oxyimino-cephalosporin hydrolysis. These findings indicate that the N346Y substitution is capable of simultaneously expanding the spectrum of activity against some of the latest β-lactam agents with altered bulky side chains and rejecting the binding of β-lactamase inhibitors. However, substitution of additional residues may be required for CMY enzymes to achieve enhanced affinity or turnover rate of the β-lactam agents leading to clinically relevant levels of resistance.IMPORTANCECeftazidime-avibactam has a broad spectrum of activity against multidrug-resistant Gram-negative bacteria including carbapenem-resistant Enterobacterales including strains with or without production of serine carbapenemases. After its launch, emergence of ceftazidime-avibactam-resistant strains that produce mutated β-lactamases capable of efficiently hydrolyzing ceftazidime or impairing avibactam inhibition are increasingly reported. Furthermore, cross-resistance towards cefiderocol, the latest cephalosporin in clinical use, has been observed in some instances. Here, we clearly demonstrate the functional role of the substituted residues in CMY-185, a four amino-acid variant of CMY-2 identified in a patient treated with ceftazidime-avibactam, for high-level resistance to this agent and low-level resistance to cefiderocol. These findings provide structural insights into how β-lactamases may incrementally alter their structures to escape multiple advanced β-lactam agents.
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Affiliation(s)
- Akito Kawai
- Department of Microbiology, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
- Center for Infectious Disease Research, Fujita Health University, Toyoake, Aichi, Japan
| | - William C. Shropshire
- Department of Infectious Diseases, Infection Control, and Employee Health, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Masahiro Suzuki
- Department of Microbiology, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
- Center for Infectious Disease Research, Fujita Health University, Toyoake, Aichi, Japan
| | - Jovan Borjan
- Division of Pharmacy, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Samuel L. Aitken
- Division of Pharmacy, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - William C. Bachman
- Division of Infectious Diseases, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Christi L. McElheny
- Division of Infectious Diseases, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Micah M. Bhatti
- Division of Pathology/Lab Medicine, Department of Laboratory Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Ryan K. Shields
- Division of Infectious Diseases, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Samuel A. Shelburne
- Department of Infectious Diseases, Infection Control, and Employee Health, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Yohei Doi
- Department of Microbiology, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
- Center for Infectious Disease Research, Fujita Health University, Toyoake, Aichi, Japan
- Division of Infectious Diseases, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
- Department of Infectious Diseases, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
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16
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Sun X, Watanabe T, Oda Y, Shen W, Ahmad A, Ouda R, de Figueiredo P, Kitamura H, Tanaka S, Kobayashi KS. Targeted demethylation and activation of NLRC5 augment cancer immunogenicity through MHC class I. Proc Natl Acad Sci U S A 2024; 121:e2310821121. [PMID: 38300873 PMCID: PMC10861931 DOI: 10.1073/pnas.2310821121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 12/30/2023] [Indexed: 02/03/2024] Open
Abstract
Impaired expression of MHC (major histocompatibility complex) class I in cancers constitutes a major mechanism of immune evasion. It has been well documented that the low level of MHC class I is associated with poor prognosis and resistance to checkpoint blockade therapies. However, there is lmited approaches to specifically induce MHC class I to date. Here, we show an approach for robust and specific induction of MHC class I by targeting an MHC class I transactivator (CITA)/NLRC5, using a CRISPR/Cas9-based gene-specific system, designated TRED-I (Targeted reactivation and demethylation for MHC-I). The TRED-I system specifically recruits a demethylating enzyme and transcriptional activators on the NLRC5 promoter, driving increased MHC class I antigen presentation and accelerated CD8+ T cell activation. Introduction of the TRED-I system in an animal cancer model exhibited tumor-suppressive effects accompanied with increased infiltration and activation of CD8+ T cells. Moreover, this approach boosted the efficacy of checkpoint blockade therapy using anti-PD1 (programmed cell death protein) antibody. Therefore, targeting NLRC5 by this strategy provides an attractive therapeutic approach for cancer.
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Affiliation(s)
- Xin Sun
- Department of Immunology, Graduate School of Medicine, Hokkaido University, Sapporo060-8638, Japan
| | - Toshiyuki Watanabe
- Department of Immunology, Graduate School of Medicine, Hokkaido University, Sapporo060-8638, Japan
| | - Yoshitaka Oda
- Department of Cancer Pathology, Graduate School of Medicine, Hokkaido University, Hokkaido, Sapporo060-8638, Japan
| | - Weidong Shen
- Division of Functional Immunology, Section of Disease Control, Institute for Genetic Medicine, Hokkaido University, Sapporo060-8638, Japan
| | - Alaa Ahmad
- Department of Immunology, Graduate School of Medicine, Hokkaido University, Sapporo060-8638, Japan
| | - Ryota Ouda
- Department of Immunology, Graduate School of Medicine, Hokkaido University, Sapporo060-8638, Japan
| | - Paul de Figueiredo
- Department of Microbial Pathogenesis and Immunology, Texas A&M Health Science Center, Bryan, TX77807
- Department of Molecular Microbiology and Immunology, University of Missouri School of Medicine, Columbia, MO65211
- Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, MO65211
- Department of Veterinary Pathobiology, University of MissouriSchool of Veterinary Medicine, Columbia, MO65211
| | - Hidemitsu Kitamura
- Division of Functional Immunology, Section of Disease Control, Institute for Genetic Medicine, Hokkaido University, Sapporo060-8638, Japan
- Department of Biomedical Engineering, Faculty of Science and Engineering, Toyo University, Kawagoe350-8585, Japan
| | - Shinya Tanaka
- Department of Cancer Pathology, Graduate School of Medicine, Hokkaido University, Hokkaido, Sapporo060-8638, Japan
- Institute for Chemical Reaction Design and Discovery, Hokkaido University, Sapporo001-0021, Japan
| | - Koichi S. Kobayashi
- Department of Immunology, Graduate School of Medicine, Hokkaido University, Sapporo060-8638, Japan
- Department of Microbial Pathogenesis and Immunology, Texas A&M Health Science Center, Bryan, TX77807
- Institute for Vaccine Research and Development, Hokkaido University, Sapporo060-8638, Japan
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17
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Nonaka H, Sakamoto S, Shiraiwa K, Ishikawa M, Tamura T, Okuno K, Kondo T, Kiyonaka S, Susaki EA, Shimizu C, Ueda HR, Kakegawa W, Arai I, Yuzaki M, Hamachi I. Bioorthogonal chemical labeling of endogenous neurotransmitter receptors in living mouse brains. Proc Natl Acad Sci U S A 2024; 121:e2313887121. [PMID: 38294939 PMCID: PMC10861872 DOI: 10.1073/pnas.2313887121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Accepted: 12/16/2023] [Indexed: 02/02/2024] Open
Abstract
Neurotransmitter receptors are essential components of synapses for communication between neurons in the brain. Because the spatiotemporal expression profiles and dynamics of neurotransmitter receptors involved in many functions are delicately governed in the brain, in vivo research tools with high spatiotemporal resolution for receptors in intact brains are highly desirable. Covalent labeling by chemical reaction (chemical labeling) of proteins without genetic manipulation is now a powerful method for analyzing receptors in vitro. However, selective target receptor labeling in the brain has not yet been achieved. This study shows that ligand-directed alkoxyacylimidazole (LDAI) chemistry can be used to selectively tether synthetic probes to target endogenous receptors in living mouse brains. The reactive LDAI reagents with negative charges were found to diffuse well over the whole brain and could selectively label target endogenous receptors, including AMPAR, NMDAR, mGlu1, and GABAAR. This simple and robust labeling protocol was then used for various applications: three-dimensional spatial mapping of endogenous receptors in the brains of healthy and disease-model mice; multi-color receptor imaging; and pulse-chase analysis of the receptor dynamics in postnatal mouse brains. Here, results demonstrated that bioorthogonal receptor modification in living animal brains may provide innovative molecular tools that contribute to the in-depth understanding of complicated brain functions.
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Affiliation(s)
- Hiroshi Nonaka
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyoto615-8510, Japan
- Hamachi Innovative Molecular Technology for Neuroscience, Exploratory Research for Advanced Technology, Japan Science and Technology Agency, Kyoto615-8530, Japan
| | - Seiji Sakamoto
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyoto615-8510, Japan
- Hamachi Innovative Molecular Technology for Neuroscience, Exploratory Research for Advanced Technology, Japan Science and Technology Agency, Kyoto615-8530, Japan
| | - Kazuki Shiraiwa
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyoto615-8510, Japan
| | - Mamoru Ishikawa
- Hamachi Innovative Molecular Technology for Neuroscience, Exploratory Research for Advanced Technology, Japan Science and Technology Agency, Kyoto615-8530, Japan
| | - Tomonori Tamura
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyoto615-8510, Japan
- Hamachi Innovative Molecular Technology for Neuroscience, Exploratory Research for Advanced Technology, Japan Science and Technology Agency, Kyoto615-8530, Japan
| | - Kyohei Okuno
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyoto615-8510, Japan
| | - Takumi Kondo
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Nagoya464-8603, Japan
| | - Shigeki Kiyonaka
- Hamachi Innovative Molecular Technology for Neuroscience, Exploratory Research for Advanced Technology, Japan Science and Technology Agency, Kyoto615-8530, Japan
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Nagoya464-8603, Japan
| | - Etsuo A. Susaki
- Department of Biochemistry and Systems Biomedicine, Juntendo University Graduate School of Medicine, Tokyo113-8421, Japan
- Laboratory for Synthetic Biology, RIKEN Center for Biosystems Dynamics Research, Osaka 565-5241, Japan
| | - Chika Shimizu
- Laboratory for Synthetic Biology, RIKEN Center for Biosystems Dynamics Research, Osaka 565-5241, Japan
| | - Hiroki R. Ueda
- Laboratory for Synthetic Biology, RIKEN Center for Biosystems Dynamics Research, Osaka 565-5241, Japan
- Department of Systems Pharmacology, Graduate School of Medicine, The University of Tokyo, Tokyo113-0033, Japan
| | - Wataru Kakegawa
- Hamachi Innovative Molecular Technology for Neuroscience, Exploratory Research for Advanced Technology, Japan Science and Technology Agency, Kyoto615-8530, Japan
- Department of Neurophysiology, Keio University School of Medicine, Tokyo160-8582, Japan
| | - Itaru Arai
- Department of Neurophysiology, Keio University School of Medicine, Tokyo160-8582, Japan
| | - Michisuke Yuzaki
- Department of Neurophysiology, Keio University School of Medicine, Tokyo160-8582, Japan
| | - Itaru Hamachi
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyoto615-8510, Japan
- Hamachi Innovative Molecular Technology for Neuroscience, Exploratory Research for Advanced Technology, Japan Science and Technology Agency, Kyoto615-8530, Japan
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18
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Hirai S, Yamada T, Katayama Y, Ishida M, Kawachi H, Matsui Y, Nakamura R, Morimoto K, Horinaka M, Sakai T, Sekido Y, Tokuda S, Takayama K. Effects of Combined Therapeutic Targeting of AXL and ATR on Pleural Mesothelioma Cells. Mol Cancer Ther 2024; 23:212-222. [PMID: 37802502 PMCID: PMC10831449 DOI: 10.1158/1535-7163.mct-23-0138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 07/12/2023] [Accepted: 10/03/2023] [Indexed: 10/10/2023]
Abstract
Few treatment options exist for pleural mesothelioma (PM), which is a progressive malignant tumor. However, the efficacy of molecular-targeted monotherapy is limited, and further therapeutic strategies are warranted to treat PM. Recently, the cancer cell-cycle checkpoint inhibitors have attracted attention because they disrupt cell-cycle regulation. Here, we aimed to establish a novel combinational therapeutic strategy to inhibit the cell-cycle checkpoint kinase, ATR in PM cells. The siRNA screening assay showed that anexelekto (AXL) knockdown enhanced cell growth inhibition when exposed to ATR inhibitors, demonstrating the synergistic effects of the ATR and AXL combination in some PM cells. The AXL and ATR inhibitor combination increased cell apoptosis via the Bim protein and suppressed cell migration when compared with each monotherapy. The combined therapeutic targeting of AXL and ATR significantly delayed regrowth compared with monotherapy. Thus, optimal AXL and ATR inhibition may potentially improve the PM outcome.
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Affiliation(s)
- Soichi Hirai
- Department of Pulmonary Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Tadaaki Yamada
- Department of Pulmonary Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Yuki Katayama
- Department of Pulmonary Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Masaki Ishida
- Department of Pulmonary Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Hayato Kawachi
- Department of Pulmonary Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Yohei Matsui
- Department of Pulmonary Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Ryota Nakamura
- Department of Pulmonary Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Kenji Morimoto
- Department of Pulmonary Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Mano Horinaka
- Department of Drug Discovery Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Toshiyuki Sakai
- Department of Drug Discovery Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Yoshitaka Sekido
- Division of Cancer Biology, Aichi Cancer Center Research Institute, Nagoya, Japan
- Division of Molecular and Cellular Oncology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Shinsaku Tokuda
- Department of Pulmonary Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Koichi Takayama
- Department of Pulmonary Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
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19
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Palihati M, Iwasaki H, Tsubouchi H. Analysis of the indispensable RAD51 cofactor BRCA2 in Naganishia liquefaciens, a Basidiomycota yeast. Life Sci Alliance 2024; 7:e202302342. [PMID: 38016757 PMCID: PMC10684384 DOI: 10.26508/lsa.202302342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Revised: 11/16/2023] [Accepted: 11/20/2023] [Indexed: 11/30/2023] Open
Abstract
The BRCA2 tumor suppressor plays a critical role in homologous recombination by regulating RAD51, the eukaryotic homologous recombinase. We identified the BRCA2 homolog in a Basidiomycota yeast, Naganishia liquefaciens BRCA2 homologs are found in many Basidiomycota species but not in Ascomycota species. Naganishia BRCA2 (Brh2, for BRCA2 homolog) is about one-third the size of human BRCA2. Brh2 carries three potential BRC repeats with two oligonucleotide/oligosaccharide-binding domains. The homolog of DSS1, a small acidic protein serving as an essential partner of BRCA2 was also identified. The yeast two-hybrid assay shows the interaction of Brh2 with both Rad51 and Dss1. Unlike human BRCA2, Brh2 is not required for normal cell growth, whereas loss of Dss1 results in slow growth. The loss of Brh2 caused pronounced sensitivity to UV and ionizing radiation, and their HR ability, as assayed by gene-targeting efficiency, is compromised. These phenotypes are indistinguishable from those of the rad51 mutant, and the rad51 brh2 double mutant. Naganishia Brh2 is likely the BRCA2 ortholog that functions as an indispensable auxiliary factor for Rad51.
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Affiliation(s)
- Maierdan Palihati
- https://ror.org/0112mx960 Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, Japan
| | - Hiroshi Iwasaki
- https://ror.org/0112mx960 Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, Japan
| | - Hideo Tsubouchi
- https://ror.org/0112mx960 Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, Japan
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20
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Toji N, Sawai A, Wang H, Ji Y, Sugioka R, Go Y, Wada K. A predisposed motor bias shapes individuality in vocal learning. Proc Natl Acad Sci U S A 2024; 121:e2308837121. [PMID: 38198530 PMCID: PMC10801888 DOI: 10.1073/pnas.2308837121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 12/04/2023] [Indexed: 01/12/2024] Open
Abstract
The development of individuality during learned behavior is a common trait observed across animal species; however, the underlying biological mechanisms remain understood. Similar to human speech, songbirds develop individually unique songs with species-specific traits through vocal learning. In this study, we investigate the developmental and molecular mechanisms underlying individuality in vocal learning by utilizing F1 hybrid songbirds (Taeniopygia guttata cross with Taeniopygia bichenovii), taking an integrating approach combining experimentally controlled systematic song tutoring, unbiased discriminant analysis of song features, and single-cell transcriptomics. When tutoring with songs from both parental species, F1 hybrid individuals exhibit evident diversity in their acquired songs. Approximately 30% of F1 hybrids selectively learn either song of the two parental species, while others develop merged songs that combine traits from both species. Vocal acoustic biases during vocal babbling initially appear as individual differences in songs among F1 juveniles and are maintained through the sensitive period of song vocal learning. These vocal acoustic biases emerge independently of the initial auditory experience of hearing the biological father's and passive tutored songs. We identify individual differences in transcriptional signatures in a subset of cell types, including the glutamatergic neurons projecting from the cortical vocal output nucleus to the hypoglossal nuclei, which are associated with variations of vocal acoustic features. These findings suggest that a genetically predisposed vocal motor bias serves as the initial origin of individual variation in vocal learning, influencing learning constraints and preferences.
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Affiliation(s)
- Noriyuki Toji
- Biological Sciences, Faculty of Science, Hokkaido University, Sapporo060-0810, Japan
- Research Fellow of the Japan Society for the Promotion of Science, Sapporo060-0810, Japan
| | - Azusa Sawai
- Division of Life Science, Graduate School of Life Science, Hokkaido University, Sapporo060-0810, Japan
| | - Hongdi Wang
- Division of Life Science, Graduate School of Life Science, Hokkaido University, Sapporo060-0810, Japan
| | - Yu Ji
- Division of Life Science, Graduate School of Life Science, Hokkaido University, Sapporo060-0810, Japan
| | - Rintaro Sugioka
- Division of Life Science, Graduate School of Life Science, Hokkaido University, Sapporo060-0810, Japan
| | - Yasuhiro Go
- Cognitive Genomics Research Group, Exploratory Research Center on Life and Living Systems, National Institutes of Natural Sciences, Okazaki444-8585, Japan
- Department of Physiological Sciences, School of Life Science, The Graduate University for Advanced Studies, SOKENDAI, Okazaki444-8585, Japan
- Division of Behavioral Development, Department of System Neuroscience, National Institute for Physiological Sciences, Okazaki444-8585, Japan
| | - Kazuhiro Wada
- Biological Sciences, Faculty of Science, Hokkaido University, Sapporo060-0810, Japan
- Division of Life Science, Graduate School of Life Science, Hokkaido University, Sapporo060-0810, Japan
- Research and Education Center for Brain Science, Hokkaido University, Sapporo060-8638, Japan
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21
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Cui M, Yamano K, Yamamoto K, Yamamoto-Imoto H, Minami S, Yamamoto T, Matsui S, Kaminishi T, Shima T, Ogura M, Tsuchiya M, Nishino K, Layden BT, Kato H, Ogawa H, Oki S, Okada Y, Isaka Y, Kosako H, Matsuda N, Yoshimori T, Nakamura S. HKDC1, a target of TFEB, is essential to maintain both mitochondrial and lysosomal homeostasis, preventing cellular senescence. Proc Natl Acad Sci U S A 2024; 121:e2306454120. [PMID: 38170752 PMCID: PMC10786298 DOI: 10.1073/pnas.2306454120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Accepted: 11/15/2023] [Indexed: 01/05/2024] Open
Abstract
Mitochondrial and lysosomal functions are intimately linked and are critical for cellular homeostasis, as evidenced by the fact that cellular senescence, aging, and multiple prominent diseases are associated with concomitant dysfunction of both organelles. However, it is not well understood how the two important organelles are regulated. Transcription factor EB (TFEB) is the master regulator of lysosomal function and is also implicated in regulating mitochondrial function; however, the mechanism underlying the maintenance of both organelles remains to be fully elucidated. Here, by comprehensive transcriptome analysis and subsequent chromatin immunoprecipitation-qPCR, we identified hexokinase domain containing 1 (HKDC1), which is known to function in the glycolysis pathway as a direct TFEB target. Moreover, HKDC1 was upregulated in both mitochondrial and lysosomal stress in a TFEB-dependent manner, and its function was critical for the maintenance of both organelles under stress conditions. Mechanistically, the TFEB-HKDC1 axis was essential for PINK1 (PTEN-induced kinase 1)/Parkin-dependent mitophagy via its initial step, PINK1 stabilization. In addition, the functions of HKDC1 and voltage-dependent anion channels, with which HKDC1 interacts, were essential for the clearance of damaged lysosomes and maintaining mitochondria-lysosome contact. Interestingly, HKDC1 regulated mitophagy and lysosomal repair independently of its prospective function in glycolysis. Furthermore, loss function of HKDC1 accelerated DNA damage-induced cellular senescence with the accumulation of hyperfused mitochondria and damaged lysosomes. Our results show that HKDC1, a factor downstream of TFEB, maintains both mitochondrial and lysosomal homeostasis, which is critical to prevent cellular senescence.
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Affiliation(s)
- Mengying Cui
- Department of Genetics, Graduate School of Medicine, Osaka University, Suita, Osaka565-0871, Japan
| | - Koji Yamano
- Ubiquitin Project, Tokyo Metropolitan Institute of Medical Science, Setagaya, Tokyo156-8506, Japan
- Department of Biomolecular Pathogenesis, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo113-8510, Japan
| | - Kenichi Yamamoto
- Department of Statistical Genetics, Graduate School of Medicine, Osaka University, Suita, Osaka565-0871, Japan
- Department of Pediatrics, Graduate School of Medicine, Osaka University, Suita, Osaka565-0871, Japan
| | - Hitomi Yamamoto-Imoto
- Department of Genetics, Graduate School of Medicine, Osaka University, Suita, Osaka565-0871, Japan
| | - Satoshi Minami
- Department of Genetics, Graduate School of Medicine, Osaka University, Suita, Osaka565-0871, Japan
- Department of Nephrology, Graduate School of Medicine, Osaka University, Suita, Osaka565-0871, Japan
| | - Takeshi Yamamoto
- Department of Nephrology, Graduate School of Medicine, Osaka University, Suita, Osaka565-0871, Japan
| | - Sho Matsui
- Department of Nephrology, Graduate School of Medicine, Osaka University, Suita, Osaka565-0871, Japan
| | - Tatsuya Kaminishi
- Department of Genetics, Graduate School of Medicine, Osaka University, Suita, Osaka565-0871, Japan
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Osaka565-0871, Japan
| | - Takayuki Shima
- Department of Biochemistry, Nara Medical University, Kashihara, Nara634-8521, Japan
| | - Monami Ogura
- Department of Intracellular Membrane Dynamics, Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka565-0871, Japan
| | - Megumi Tsuchiya
- Laboratory of Nuclear Dynamics Group, Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka565-0871, Japan
| | - Kohei Nishino
- Division of Cell Signaling, Fujii Memorial Institute of Medical Sciences, Institute of Advanced Medical Sciences, Tokushima University, Tokushima770-8503, Japan
| | - Brian T. Layden
- Division of Endocrinology, Diabetes, and Metabolism, University of Illinois Chicago, Chicago, IL60612
- Jesse Brown Veterans Affairs Medical Center, Chicago, IL60612
| | - Hisakazu Kato
- Department of Medical Biochemistry, Graduate School of Medicine/Frontier Bioscience, Osaka University, Suita, Osaka565-0871, Japan
| | - Hidesato Ogawa
- Laboratory of Nuclear Dynamics Group, Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka565-0871, Japan
| | - Shinya Oki
- Department of Drug Discovery Medicine, Graduate School of Medicine, Kyoto University, Kyoto606-8501, Japan
| | - Yukinori Okada
- Department of Statistical Genetics, Graduate School of Medicine, Osaka University, Suita, Osaka565-0871, Japan
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Osaka565-0871, Japan
- Laboratory of Statistical Immunology, Immunology Frontier Research Center, World Premier International Research Center (WPI-IFReC), Osaka University, Suita, Osaka565-0871, Japan
| | - Yoshitaka Isaka
- Department of Nephrology, Graduate School of Medicine, Osaka University, Suita, Osaka565-0871, Japan
| | - Hidetaka Kosako
- Division of Cell Signaling, Fujii Memorial Institute of Medical Sciences, Institute of Advanced Medical Sciences, Tokushima University, Tokushima770-8503, Japan
| | - Noriyuki Matsuda
- Ubiquitin Project, Tokyo Metropolitan Institute of Medical Science, Setagaya, Tokyo156-8506, Japan
- Department of Biomolecular Pathogenesis, Medical Research Institute, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo113-8510, Japan
| | - Tamotsu Yoshimori
- Department of Genetics, Graduate School of Medicine, Osaka University, Suita, Osaka565-0871, Japan
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Osaka565-0871, Japan
- Department of Intracellular Membrane Dynamics, Graduate School of Frontier Biosciences, Osaka University, Suita, Osaka565-0871, Japan
| | - Shuhei Nakamura
- Department of Biochemistry, Nara Medical University, Kashihara, Nara634-8521, Japan
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Enokido T, Horie M, Yoshino S, Suzuki HI, Matsuki R, Brunnström H, Micke P, Nagase T, Saito A, Miyashita N. Distinct microRNA Signature and Suppression of ZFP36L1 Define ASCL1-Positive Lung Adenocarcinoma. Mol Cancer Res 2024; 22:29-40. [PMID: 37801008 DOI: 10.1158/1541-7786.mcr-23-0229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 08/23/2023] [Accepted: 10/04/2023] [Indexed: 10/07/2023]
Abstract
Achaete-scute family bHLH transcription factor 1 (ASCL1) is a master transcription factor involved in neuroendocrine differentiation. ASCL1 is expressed in approximately 10% of lung adenocarcinomas (LUAD) and exerts tumor-promoting effects. Here, we explored miRNA profiles in ASCL1-positive LUADs and identified several miRNAs closely associated with ASCL1 expression, including miR-375, miR-95-3p/miR-95-5p, miR-124-3p, and members of the miR-17∼92 family. Similar to small cell lung cancer, Yes1 associated transcriptional regulator (YAP1), a representative miR-375 target gene, was suppressed in ASCL1-positive LUADs. ASCL1 knockdown followed by miRNA profiling in a cell culture model further revealed that ASCL1 positively regulates miR-124-3p and members of the miR-17∼92 family. Integrative transcriptomic analyses identified ZFP36 ring finger protein like 1 (ZFP36L1) as a target gene of miR-124-3p, and IHC studies demonstrated that ASCL1-positive LUADs are associated with low ZFP36L1 protein levels. Cell culture studies showed that ectopic ZFP36L1 expression inhibits cell proliferation, survival, and cell-cycle progression. Moreover, ZFP36L1 negatively regulated several genes including E2F transcription factor 1 (E2F1) and snail family transcriptional repressor 1 (SNAI1). In conclusion, our study revealed that suppression of ZFP36L1 via ASCL1-regulated miR-124-3p could modulate gene expression, providing evidence that ASCL1-mediated regulation of miRNAs shapes molecular features of ASCL1-positive LUADs. IMPLICATIONS Our study revealed unique miRNA profiles of ASCL1-positive LUADs and identified ASCL1-regulated miRNAs with functional relevance.
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Affiliation(s)
- Takayoshi Enokido
- Department of Respiratory Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Masafumi Horie
- Department of Molecular and Cellular Pathology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Seiko Yoshino
- Division of Molecular Oncology, Center for Neurological Diseases and Cancer, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Hiroshi I Suzuki
- Division of Molecular Oncology, Center for Neurological Diseases and Cancer, Nagoya University Graduate School of Medicine, Nagoya, Japan
- Institute for Glyco-core Research (iGCORE), Nagoya University, Nagoya, Japan
- Center for One Medicine Innovative Translational Research (COMIT), Nagoya University, Nagoya, Japan
| | - Rei Matsuki
- Department of Respiratory Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hans Brunnström
- Lund University, Laboratory Medicine Region Skåne, Department of Clinical Sciences Lund, Pathology, Lund, Sweden
| | - Patrick Micke
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala, Sweden
| | - Takahide Nagase
- Department of Respiratory Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Akira Saito
- Department of Respiratory Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Naoya Miyashita
- Department of Respiratory Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
- Department of Cell Biology, Duke University School of Medicine, Durham, North Carolina
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23
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Inagaki NF, Nakanishi H, Ohto T, Shindou H, Shimizu T. LPCAT3/LPLAT12 deficiency in the liver ameliorates acetaminophen-induced acute liver injury. FASEB J 2024; 38:e23328. [PMID: 38019192 DOI: 10.1096/fj.202301744r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 11/07/2023] [Accepted: 11/10/2023] [Indexed: 11/30/2023]
Abstract
Acetaminophen (APAP) is a double-edged sword, mainly depending on the dosage. A moderate dose of APAP is effective for fever and pain relief; however, an overdose induces acute liver injury. The mechanism underlying APAP-induced acute liver failure is unclear, and its treatment is limited. A recent report has shown that several oxidized phospholipids are associated with APAP-induced acute liver failure. Lysophosphatidylcholine acyltransferase 3 (Lpcat3, Lplat12), which is highly expressed in the liver, preferentially catalyzes the incorporation of arachidonate into lysophospholipids (PLs). In the present study, we investigated the roles of Lpcat3 on APAP-induced acute liver injury using liver-specific Lpcat3-knockout mice. Hepatic Lpcat3 deficiency reduced the degree of APAP-induced necrosis of hepatocytes around Zone 3 and ameliorated the elevation of hepatic injury serum marker levels, and prolonged survival. Lipidomic analysis showed that the accumulation of oxidized and hydroperoxidized phospholipids was suppressed in Lpcat3-knockout mice. The amelioration of APAP-induced acute liver injury was due not only to the reduction in the lipid synthesis of arachidonic acid PLs because of Lpcat3 deficiency, but also to the promotion of the APAP detoxification pathway by facilitating the conjugation of glutathione and N-acetyl-p-benzoquinone imine. Our findings suggest that Lpcat3 is a potential therapeutic target for treating APAP-induced acute liver injury.
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Affiliation(s)
- Natsuko F Inagaki
- Department of Chemical System Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo, Japan
- Department of Lipid Signaling, National Center for Global Health and Medicine, Tokyo, Japan
| | | | | | - Hideo Shindou
- Department of Lipid Signaling, National Center for Global Health and Medicine, Tokyo, Japan
- Department of Lipid Life Science, National Center for Global Health and Medicine, Tokyo, Japan
- Department of Medical Lipid Science, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Takao Shimizu
- Department of Lipid Signaling, National Center for Global Health and Medicine, Tokyo, Japan
- Institute of Microbial Chemistry, Tokyo, Japan
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24
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Sawai Y, Suzuki Y, Asagiri M, Hida S, Kondo R, Zamponi GW, Giles WR, Imaizumi Y, Yamamura H. Caveolin-1 forms a complex with P2X7 receptor and tunes P2X7-mediated ATP signaling in mouse bone marrow-derived macrophages. Am J Physiol Cell Physiol 2024; 326:C125-C142. [PMID: 37955123 DOI: 10.1152/ajpcell.00303.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 10/25/2023] [Accepted: 11/07/2023] [Indexed: 11/14/2023]
Abstract
The ionotropic purinergic P2X7 receptor responds to extracellular ATP and can trigger proinflammatory immune signaling in macrophages. Caveolin-1 (Cav-1) is known to modulate functions of macrophages and innate immunity. However, it is unknown how Cav-1 modulates P2X7 receptor activity in macrophages. We herein examined P2X7 receptor activity and macrophage functions using bone marrow-derived macrophages (BMDMs) from wild-type (WT) and Cav-1 knockout (KO) mice. ATP (1 mM) application caused biphasic increase in cytosolic [Ca2+] and sustained decrease in cytosolic [K+]. A specific P2X7 receptor blocker, A-740003, inhibited the maintained cytosolic [Ca2+] increase and cytosolic [K+] decrease. Total internal reflection fluorescent imaging and proximity ligation assays revealed a novel molecular complex formation between P2X7 receptors and Cav-1 in WT BMDMs that were stimulated with lipopolysaccharides. This molecular coupling was increased by ATP application. Specifically, the ATP-induced Ca2+ influx and K+ efflux through P2X7 receptors were increased in Cav-1 KO BMDMs, even though the total and surface protein levels of P2X7 receptors in WT and Cav-1 KO BMDMs were unchanged. Cell-impermeable dye (TO-PRO3) uptake analysis revealed that macropore formation of P2X7 receptors was enhanced in Cav-1 KO BMDMs. Cav-1 KO BMDMs increased ATP-induced IL-1β secretion, reactive oxygen species production, Gasdermin D (GSDMD) cleavage, and lactate dehydrogenase release indicating pyroptosis. A-740003 completely prevented ATP-induced pyroptosis. In combination, these datasets show that Cav-1 has a negative effect on P2X7 receptor activity in BMDMs and that Cav-1 in macrophages may contribute to finely tuned immune responses by preventing excessive IL-1β secretion and pyroptosis.NEW & NOTEWORTHY In bone marrow-derived macrophages, Cav-1 suppresses the macropore formation of P2X7 receptors through their direct or indirect interactions, resulting in reduced membrane permeability of cations (Ca2+ and K+) and large cell-impermeable dye (TO-PRO3) induced by ATP. Cav-1 also inhibits ATP-induced IL-1β secretion, ROS production, GSDMD cleavage, and pyroptosis. Cav-1 contributes to the maintenance of proper immune responses by finely tuning IL-1β secretion and cell death in macrophages.
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Affiliation(s)
- Yuuki Sawai
- Department of Molecular and Cellular Pharmacology, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan
| | - Yoshiaki Suzuki
- Department of Molecular and Cellular Pharmacology, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan
| | - Masataka Asagiri
- Department of Pharmacology, Yamaguchi University Graduate School of Medicine, Ube, Japan
| | - Shigeaki Hida
- Department of Molecular and Cellular Health Sciences, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan
| | - Rubii Kondo
- Department of Molecular and Cellular Pharmacology, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan
| | - Gerald W Zamponi
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
- Department of Clinical Neurosciences, Hotchkiss Brain Institute, Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Wayne R Giles
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Yuji Imaizumi
- Department of Molecular and Cellular Pharmacology, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan
| | - Hisao Yamamura
- Department of Molecular and Cellular Pharmacology, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan
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25
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Shimizu T, Oike A, Kobayashi EH, Sekiya A, Kobayashi N, Shibata S, Hamada H, Saito M, Yaegashi N, Suyama M, Arima T, Okae H. CRISPR screening in human trophoblast stem cells reveals both shared and distinct aspects of human and mouse placental development. Proc Natl Acad Sci U S A 2023; 120:e2311372120. [PMID: 38085778 PMCID: PMC10742386 DOI: 10.1073/pnas.2311372120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 11/09/2023] [Indexed: 12/18/2023] Open
Abstract
The placenta serves as the interface between the mother and fetus, facilitating the exchange of gases and nutrients between their separate blood circulation systems. Trophoblasts in the placenta play a central role in this process. Our current understanding of mammalian trophoblast development relies largely on mouse models. However, given the diversification of mammalian placentas, findings from the mouse placenta cannot be readily extrapolated to other mammalian species, including humans. To fill this knowledge gap, we performed CRISPR knockout screening in human trophoblast stem cells (hTSCs). We targeted genes essential for mouse placental development and identified more than 100 genes as critical regulators in both human hTSCs and mouse placentas. Among them, we further characterized in detail two transcription factors, DLX3 and GCM1, and revealed their essential roles in hTSC differentiation. Moreover, a gene function-based comparison between human and mouse trophoblast subtypes suggests that their relationship may differ significantly from previous assumptions based on tissue localization or cellular function. Notably, our data reveal that hTSCs may not be analogous to mouse TSCs or the extraembryonic ectoderm (ExE) in which in vivo TSCs reside. Instead, hTSCs may be analogous to progenitor cells in the mouse ectoplacental cone and chorion. This finding is consistent with the absence of ExE-like structures during human placental development. Our data not only deepen our understanding of human trophoblast development but also facilitate cross-species comparison of mammalian placentas.
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Affiliation(s)
- Takanori Shimizu
- Department of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai980-8575, Japan
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai980-8575, Japan
| | - Akira Oike
- Department of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai980-8575, Japan
- Department of Trophoblast Research, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto860-0811, Japan
| | - Eri H. Kobayashi
- Department of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai980-8575, Japan
| | - Asato Sekiya
- Department of Trophoblast Research, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto860-0811, Japan
| | - Norio Kobayashi
- Department of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai980-8575, Japan
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI48109
| | - Shun Shibata
- Department of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai980-8575, Japan
| | - Hirotaka Hamada
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai980-8575, Japan
| | - Masatoshi Saito
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai980-8575, Japan
| | - Nobuo Yaegashi
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai980-8575, Japan
| | - Mikita Suyama
- Division of Bioinformatics, Medical Institute of Bioregulation, Kyushu University, Fukuoka812-8582, Japan
| | - Takahiro Arima
- Department of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai980-8575, Japan
| | - Hiroaki Okae
- Department of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai980-8575, Japan
- Department of Trophoblast Research, Institute of Molecular Embryology and Genetics, Kumamoto University, Kumamoto860-0811, Japan
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26
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Ogura M, Kaminishi T, Shima T, Torigata M, Bekku N, Tabata K, Minami S, Nishino K, Nezu A, Hamasaki M, Kosako H, Yoshimori T, Nakamura S. Microautophagy regulated by STK38 and GABARAPs is essential to repair lysosomes and prevent aging. EMBO Rep 2023; 24:e57300. [PMID: 37987447 DOI: 10.15252/embr.202357300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 11/22/2023] Open
Abstract
Lysosomes are degradative organelles and signaling hubs that maintain cell and tissue homeostasis, and lysosomal dysfunction is implicated in aging and reduced longevity. Lysosomes are frequently damaged, but their repair mechanisms remain unclear. Here, we demonstrate that damaged lysosomal membranes are repaired by microautophagy (a process termed "microlysophagy") and identify key regulators of the first and last steps. We reveal the AGC kinase STK38 as a novel microlysophagy regulator. Through phosphorylation of the scaffold protein DOK1, STK38 is specifically required for the lysosomal recruitment of the AAA+ ATPase VPS4, which terminates microlysophagy by promoting the disassembly of ESCRT components. By contrast, microlysophagy initiation involves non-canonical lipidation of ATG8s, especially the GABARAP subfamily, which is required for ESCRT assembly through interaction with ALIX. Depletion of STK38 and GABARAPs accelerates DNA damage-induced cellular senescence in human cells and curtails lifespan in C. elegans, respectively. Thus, microlysophagy is regulated by STK38 and GABARAPs and could be essential for maintaining lysosomal integrity and preventing aging.
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Affiliation(s)
- Monami Ogura
- Department of Intracellular Membrane Dynamics, Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan
| | - Tatsuya Kaminishi
- Department of Genetics, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Takayuki Shima
- Department of Genetics, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Miku Torigata
- Department of Genetics, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Nao Bekku
- Department of Genetics, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Keisuke Tabata
- Department of Intracellular Membrane Dynamics, Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan
- Department of Genetics, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Satoshi Minami
- Department of Genetics, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Kohei Nishino
- Fujii Memorial Institute of Medical Sciences, Institute of Advanced Medical Sciences, Tokushima University, Tokushima, Japan
| | - Akiko Nezu
- Department of Genetics, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Maho Hamasaki
- Department of Intracellular Membrane Dynamics, Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan
- Department of Genetics, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Hidetaka Kosako
- Fujii Memorial Institute of Medical Sciences, Institute of Advanced Medical Sciences, Tokushima University, Tokushima, Japan
| | - Tamotsu Yoshimori
- Department of Intracellular Membrane Dynamics, Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan
- Department of Genetics, Graduate School of Medicine, Osaka University, Osaka, Japan
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, Osaka, Japan
| | - Shuhei Nakamura
- Department of Intracellular Membrane Dynamics, Graduate School of Frontier Biosciences, Osaka University, Osaka, Japan
- Department of Genetics, Graduate School of Medicine, Osaka University, Osaka, Japan
- Institute for Advanced Co-Creation Studies, Osaka University, Osaka, Japan
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27
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Vanickova K, Milosevic M, Ribeiro Bas I, Burocziova M, Yokota A, Danek P, Grusanovic S, Chiliński M, Plewczynski D, Rohlena J, Hirai H, Rohlenova K, Alberich‐Jorda M. Hematopoietic stem cells undergo a lymphoid to myeloid switch in early stages of emergency granulopoiesis. EMBO J 2023; 42:e113527. [PMID: 37846891 PMCID: PMC10690458 DOI: 10.15252/embj.2023113527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 09/20/2023] [Accepted: 09/25/2023] [Indexed: 10/18/2023] Open
Abstract
Emergency granulopoiesis is the enhanced and accelerated production of granulocytes that occurs during acute infection. The contribution of hematopoietic stem cells (HSCs) to this process was reported; however, how HSCs participate in emergency granulopoiesis remains elusive. Here, using a mouse model of emergency granulopoiesis we observe transcriptional changes in HSCs as early as 4 h after lipopolysaccharide (LPS) administration. We observe that the HSC identity is changed towards a myeloid-biased HSC and show that CD201 is enriched in lymphoid-biased HSCs. While CD201 expression under steady-state conditions reveals a lymphoid bias, under emergency granulopoiesis loss of CD201 marks the lymphoid-to-myeloid transcriptional switch. Mechanistically, we determine that lymphoid-biased CD201+ HSCs act as a first response during emergency granulopoiesis due to direct sensing of LPS by TLR4 and downstream activation of NF-κΒ signaling. The myeloid-biased CD201- HSC population responds indirectly during an acute infection by sensing G-CSF, increasing STAT3 phosphorylation, and upregulating LAP/LAP* C/EBPβ isoforms. In conclusion, HSC subpopulations support early phases of emergency granulopoiesis due to their transcriptional rewiring from a lymphoid-biased to myeloid-biased population and thus establishing alternative paths to supply elevated numbers of granulocytes.
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Affiliation(s)
- Karolina Vanickova
- Laboratory of Hemato‐oncologyInstitute of Molecular Genetics of the Czech Academy of SciencesPragueCzech Republic
- Faculty of ScienceCharles UniversityPragueCzech Republic
| | - Mirko Milosevic
- Institute of Biotechnology of the Czech Academy of SciencesPragueCzech Republic
| | - Irina Ribeiro Bas
- Laboratory of Hemato‐oncologyInstitute of Molecular Genetics of the Czech Academy of SciencesPragueCzech Republic
- Faculty of ScienceCharles UniversityPragueCzech Republic
| | - Monika Burocziova
- Laboratory of Hemato‐oncologyInstitute of Molecular Genetics of the Czech Academy of SciencesPragueCzech Republic
| | - Asumi Yokota
- Laboratory of Stem Cell Regulation, School of Life SciencesTokyo University of Pharmacy and Life SciencesTokyoJapan
| | - Petr Danek
- Laboratory of Hemato‐oncologyInstitute of Molecular Genetics of the Czech Academy of SciencesPragueCzech Republic
| | - Srdjan Grusanovic
- Laboratory of Hemato‐oncologyInstitute of Molecular Genetics of the Czech Academy of SciencesPragueCzech Republic
| | - Mateusz Chiliński
- Laboratory of Bioinformatics and Computational Genomics, Faculty of Mathematics and Information ScienceWarsaw University of TechnologyWarsawPoland
- Laboratory of Functional and Structural Genomics, Centre of New TechnologiesUniversity of WarsawWarsawPoland
| | - Dariusz Plewczynski
- Laboratory of Bioinformatics and Computational Genomics, Faculty of Mathematics and Information ScienceWarsaw University of TechnologyWarsawPoland
- Laboratory of Functional and Structural Genomics, Centre of New TechnologiesUniversity of WarsawWarsawPoland
| | - Jakub Rohlena
- Institute of Biotechnology of the Czech Academy of SciencesPragueCzech Republic
| | - Hideyo Hirai
- Laboratory of Stem Cell Regulation, School of Life SciencesTokyo University of Pharmacy and Life SciencesTokyoJapan
| | - Katerina Rohlenova
- Institute of Biotechnology of the Czech Academy of SciencesPragueCzech Republic
| | - Meritxell Alberich‐Jorda
- Laboratory of Hemato‐oncologyInstitute of Molecular Genetics of the Czech Academy of SciencesPragueCzech Republic
- Childhood Leukaemia Investigation Prague, Department of Pediatric Haematology and Oncology, 2 Faculty of Medicine, University Hospital MotolCharles University in PraguePrahaCzech Republic
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28
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Kubori T. A two-component system serves as a central hub for connecting energy metabolism and plasmid dissemination in bacteria. mBio 2023; 14:e0247423. [PMID: 38032214 PMCID: PMC10746237 DOI: 10.1128/mbio.02474-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2023] Open
Abstract
Mobile genetic elements such as conjugative plasmids play a key role in the acquisition of antibiotic resistance by pathogenic bacteria. Resistance genes on plasmids can be transferred between bacteria using specialized conjugation machinery. Acinetobacter baumannii, the most common bacterium associated with nosocomial infections, harbors a large conjugative plasmid that encodes a type IV secretion system (T4SS). Feng et al. recently found that the A. baumannii T4SS is specialized for plasmid transfer, suggesting that it may be involved in multidrug resistance (Z. Feng, L. Wang, Q. Guan, X. Chu, and Z.-Q. Luo, mBio e02276-23, 2023, https://doi.org/10.1128/mbio.02276-23), T4SS-encoding genes are shown to be controlled by a versatile GacA/S two-component regulatory system. GacA/S is also found to regulate genes involved in central metabolism. The coordinated regulation of metabolism and plasmid conjugation may be a bacterial strategy for adapting to selective pressure from antibiotics.
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Affiliation(s)
- Tomoko Kubori
- Department of Microbiology, Graduate School of Medicine, Gifu University, Gifu, Japan
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29
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Sakaji K, Ebrahimiazar S, Harigae Y, Ishibashi K, Sato T, Yoshikawa T, Atsumi GI, Sung CH, Saito M. MAST4 promotes primary ciliary resorption through phosphorylation of Tctex-1. Life Sci Alliance 2023; 6:e202301947. [PMID: 37726137 PMCID: PMC10509483 DOI: 10.26508/lsa.202301947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 08/27/2023] [Accepted: 08/28/2023] [Indexed: 09/21/2023] Open
Abstract
The primary cilium undergoes cell cycle-dependent assembly and disassembly. Dysregulated ciliary dynamics are associated with several pathological conditions called ciliopathies. Previous studies showed that the localization of phosphorylated Tctex-1 at Thr94 (T94) at the ciliary base critically regulates ciliary resorption by accelerating actin remodeling and ciliary pocket membrane endocytosis. Here, we show that microtubule-associated serine/threonine kinase family member 4 (MAST4) is localized at the primary cilium. Suppressing MAST4 blocks serum-induced ciliary resorption, and overexpressing MAST4 accelerates ciliary resorption. Tctex-1 binds to the kinase domain of MAST4, in which the R503 and D504 residues are key to MAST4-mediated ciliary resorption. The ciliary resorption and the ciliary base localization of phospho-(T94)Tctex-1 are blocked by the knockdown of MAST4 or the expression of the catalytic-inactive site-directed MAST4 mutants. Moreover, MAST4 is required for Cdc42 activation and Rab5-mediated periciliary membrane endocytosis during ciliary resorption. These results support that MAST4 is a novel kinase that regulates ciliary resorption by modulating the ciliary base localization of phospho-(T94)Tctex-1. MAST4 is a potential new target for treating ciliopathies causally by ciliary resorption defects.
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Affiliation(s)
- Kensuke Sakaji
- Department of Molecular Pharmacology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Sara Ebrahimiazar
- Department of Molecular Pharmacology, Tohoku University Graduate School of Medicine, Sendai, Japan
- Department of Developmental Neuroscience, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Yasuhiro Harigae
- Department of Molecular Pharmacology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Kenichi Ishibashi
- https://ror.org/01gaw2478 Department of Molecular Physiology and Pathology, School of Pharma-Science, Teikyo University, Itabashi-ku, Tokyo, Japan
| | - Takeya Sato
- Department of Molecular Pharmacology, Tohoku University Graduate School of Medicine, Sendai, Japan
- Department of Clinical Biology and Hormonal Regulation, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Takeo Yoshikawa
- Department of Neuropharmacology, Hokkaido University Graduate School of Medicine, Sapporo, Japan
- Department of Pharmacology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Gen-Ichi Atsumi
- https://ror.org/01gaw2478 Department of Molecular Physiology and Pathology, School of Pharma-Science, Teikyo University, Itabashi-ku, Tokyo, Japan
| | - Ching-Hwa Sung
- Department of Ophthalmology, Margaret M. Dyson Vision Research Institute, Weill Cornell Medicine, New York, NY, USA
- Department of Cell and Developmental Biology, Weill Cornell Medicine, New York, NY, USA
| | - Masaki Saito
- Department of Molecular Pharmacology, Tohoku University Graduate School of Medicine, Sendai, Japan
- https://ror.org/01gaw2478 Department of Molecular Physiology and Pathology, School of Pharma-Science, Teikyo University, Itabashi-ku, Tokyo, Japan
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30
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Ikeda H, Miyao S, Nagaoka S, Takashima T, Law SM, Yamamoto T, Kurimoto K. High-quality single-cell transcriptomics from ovarian histological sections during folliculogenesis. Life Sci Alliance 2023; 6:e202301929. [PMID: 37722727 PMCID: PMC10507249 DOI: 10.26508/lsa.202301929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 08/23/2023] [Accepted: 08/23/2023] [Indexed: 09/20/2023] Open
Abstract
High-quality, straightforward single-cell RNA sequencing (RNA-seq) with spatial resolution remains challenging. Here, we developed DRaqL (direct RNA recovery and quenching for laser capture microdissection), an experimental approach for efficient cell lysis of tissue sections, directly applicable to cDNA amplification. Single-cell RNA-seq combined with DRaqL allowed transcriptomic profiling from alcohol-fixed sections with efficiency comparable with that of profiling from freshly dissociated cells, together with effective exon-exon junction profiling. The combination of DRaqL with protease treatment enabled robust and efficient single-cell transcriptome analysis from formalin-fixed tissue sections. Applying this method to mouse ovarian sections, we were able to predict the transcriptome of oocytes by their size and identified an anomaly in the size-transcriptome relationship relevant to growth retardation of oocytes, in addition to detecting oocyte-specific splice isoforms. Furthermore, we identified differentially expressed genes in granulosa cells in association with their proximity to the oocytes, suggesting distinct epigenetic regulations and cell-cycle activities governing the germ-soma relationship. Thus, DRaqL is a versatile, efficient approach for high-quality single-cell RNA-seq from tissue sections, thereby revealing histological heterogeneity in folliculogenic transcriptome.
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Affiliation(s)
- Hiroki Ikeda
- https://ror.org/045ysha14 Department of Embryology, School of Medicine, Nara Medical University, Kashihara, Japan
| | - Shintaro Miyao
- https://ror.org/045ysha14 Department of Embryology, School of Medicine, Nara Medical University, Kashihara, Japan
| | - So Nagaoka
- https://ror.org/045ysha14 Department of Embryology, School of Medicine, Nara Medical University, Kashihara, Japan
| | - Tomoya Takashima
- https://ror.org/045ysha14 Department of Embryology, School of Medicine, Nara Medical University, Kashihara, Japan
| | - Sze-Ming Law
- https://ror.org/045ysha14 Department of Embryology, School of Medicine, Nara Medical University, Kashihara, Japan
| | - Takuya Yamamoto
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
- Institute for the Advanced Study of Human Biology (WPI-ASHBi), Kyoto University, Kyoto, Japan
- Medical-risk Avoidance based on iPS Cells Team, RIKEN Center for Advanced Intelligence Project (AIP), Kyoto, Japan
| | - Kazuki Kurimoto
- https://ror.org/045ysha14 Department of Embryology, School of Medicine, Nara Medical University, Kashihara, Japan
- https://ror.org/045ysha14 Advanced Medical Research Center, Nara Medical University, Kashihara, Japan
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31
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Ihashi S, Hamanaka M, Kaji M, Mori R, Nishizaki S, Mori M, Imasato Y, Inoue K, Matoba S, Ogonuki N, Takasu A, Nakamura M, Matsumoto K, Anzai M, Ogura A, Ikawa M, Miyamoto K. Incomplete activation of Alyref and Gabpb1 leads to preimplantation arrest in cloned mouse embryos. Life Sci Alliance 2023; 6:e202302296. [PMID: 37640449 PMCID: PMC10462978 DOI: 10.26508/lsa.202302296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 08/02/2023] [Accepted: 08/04/2023] [Indexed: 08/31/2023] Open
Abstract
Differentiated cell nuclei can be reprogrammed after nuclear transfer (NT) to oocytes and the produced NT embryos can give rise to cloned animals. However, development of NT embryos is often hampered by recurrent reprogramming failures, including the incomplete activation of developmental genes, yet specific genes responsible for the arrest of NT embryos are not well understood. Here, we searched for developmentally important genes among the reprogramming-resistant H3K9me3-repressed genes and identified Alyref and Gabpb1 by siRNA screening. Gene knockout of Alyref and Gabpb1 by the CRISPR/Cas9 system resulted in early developmental arrest in mice. Alyref was needed for the proper formation of inner cell mass by regulating Nanog, whereas Gabpb1 deficiency led to apoptosis. The supplement of Alyref and Gabpb1 mRNA supported efficient preimplantation development of cloned embryos. Alyref and Gabpb1 were silenced in NT embryos partially because of the repressed expression of Klf16 by H3K9me3. Thus, our study shows that the H3K9me3-repressed genes contain developmentally required genes, and the incomplete activation of such genes results in preimplantation arrest of cloned embryos.
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Affiliation(s)
- Shunya Ihashi
- Laboratory of Molecular Developmental Biology, Faculty of Biology-Oriented Science and Technology, Kindai University, Wakayama, Japan
| | - Mizuto Hamanaka
- Laboratory of Molecular Developmental Biology, Faculty of Biology-Oriented Science and Technology, Kindai University, Wakayama, Japan
| | - Masaya Kaji
- Laboratory of Molecular Developmental Biology, Faculty of Biology-Oriented Science and Technology, Kindai University, Wakayama, Japan
| | - Ryunosuke Mori
- Laboratory of Molecular Developmental Biology, Faculty of Biology-Oriented Science and Technology, Kindai University, Wakayama, Japan
| | - Shuntaro Nishizaki
- Laboratory of Molecular Developmental Biology, Faculty of Biology-Oriented Science and Technology, Kindai University, Wakayama, Japan
| | - Miki Mori
- Laboratory of Molecular Developmental Biology, Faculty of Biology-Oriented Science and Technology, Kindai University, Wakayama, Japan
| | - Yuma Imasato
- Laboratory of Molecular Developmental Biology, Faculty of Biology-Oriented Science and Technology, Kindai University, Wakayama, Japan
| | - Kimiko Inoue
- https://ror.org/00s05em53 Bioresource Engineering Division, RIKEN Bioresource Research Center, Tsukuba, Japan
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Japan
| | - Shogo Matoba
- https://ror.org/00s05em53 Bioresource Engineering Division, RIKEN Bioresource Research Center, Tsukuba, Japan
- Cooperative Division of Veterinary Sciences, Tokyo University of Agriculture and Technology, Fuchu, Japan
| | - Narumi Ogonuki
- https://ror.org/00s05em53 Bioresource Engineering Division, RIKEN Bioresource Research Center, Tsukuba, Japan
| | - Atsushi Takasu
- Laboratory of Molecular Developmental Biology, Faculty of Biology-Oriented Science and Technology, Kindai University, Wakayama, Japan
| | - Misaki Nakamura
- Laboratory of Molecular Developmental Biology, Faculty of Biology-Oriented Science and Technology, Kindai University, Wakayama, Japan
| | - Kazuya Matsumoto
- Laboratory of Molecular Developmental Biology, Faculty of Biology-Oriented Science and Technology, Kindai University, Wakayama, Japan
| | - Masayuki Anzai
- Institute of Advanced Technology, Kindai University, Wakayama, Japan
| | - Atsuo Ogura
- https://ror.org/00s05em53 Bioresource Engineering Division, RIKEN Bioresource Research Center, Tsukuba, Japan
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Japan
| | - Masahito Ikawa
- Research Institute for Microbial Diseases, Osaka University, Suita, Japan
| | - Kei Miyamoto
- Laboratory of Molecular Developmental Biology, Faculty of Biology-Oriented Science and Technology, Kindai University, Wakayama, Japan
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Miura K, Suzuki Y, Ishida K, Arakawa M, Wu H, Fujioka Y, Emi A, Maeda K, Hamajima R, Nakano T, Tenno T, Hiroaki H, Morita E. Distinct motifs in the E protein are required for SARS-CoV-2 virus particle formation and lysosomal deacidification in host cells. J Virol 2023; 97:e0042623. [PMID: 37830820 PMCID: PMC10617393 DOI: 10.1128/jvi.00426-23] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 07/18/2023] [Indexed: 10/14/2023] Open
Abstract
IMPORTANCE Severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2), the virus responsible for coronavirus disease 2019 (COVID-19), has caused a global public health crisis. The E protein, a structural protein found in this virus particle, is also known to be a viroporin. As such, it forms oligomeric ion channels or pores in the host cell membrane. However, the relationship between these two functions is poorly understood. In this study, we showed that the roles of E protein in virus particle and viroporin formation are distinct. This study contributes to the development of drugs that inhibit SARS-CoV-2 virus particle formation. Additionally, we designed a highly sensitive and high-throughput virus-like particle detection system using the HiBiT tag, which is a useful tool for studying the release of SARS-CoV-2.
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Affiliation(s)
- Koya Miura
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, Aomori, Japan
| | - Youichi Suzuki
- Department of Microbiology and Infection Control, Faculty of Medicine, Osaka Medical and Pharmaceutical University, Osaka, Japan
| | - Kotaro Ishida
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, Aomori, Japan
| | - Masashi Arakawa
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, Aomori, Japan
| | - Hong Wu
- Department of Microbiology and Infection Control, Faculty of Medicine, Osaka Medical and Pharmaceutical University, Osaka, Japan
| | - Yoshihiko Fujioka
- Department of Microbiology and Infection Control, Faculty of Medicine, Osaka Medical and Pharmaceutical University, Osaka, Japan
| | - Akino Emi
- Department of Microbiology and Infection Control, Faculty of Medicine, Osaka Medical and Pharmaceutical University, Osaka, Japan
| | - Koki Maeda
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, Aomori, Japan
| | - Ryusei Hamajima
- Laboratory of Structural and Molecular Pharmacology, Graduate School of Pharmaceutical Sciences, Nagoya University, Aichi, Japan
| | - Takashi Nakano
- Department of Microbiology and Infection Control, Faculty of Medicine, Osaka Medical and Pharmaceutical University, Osaka, Japan
| | - Takeshi Tenno
- Laboratory of Structural and Molecular Pharmacology, Graduate School of Pharmaceutical Sciences, Nagoya University, Aichi, Japan
- BeCellBar LLC, Nagoya, Aichi, Japan
| | - Hidekazu Hiroaki
- Laboratory of Structural and Molecular Pharmacology, Graduate School of Pharmaceutical Sciences, Nagoya University, Aichi, Japan
- BeCellBar LLC, Nagoya, Aichi, Japan
| | - Eiji Morita
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, Aomori, Japan
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Uemura K, Nobori H, Sato A, Toba S, Kusakabe S, Sasaki M, Tabata K, Matsuno K, Maeda N, Ito S, Tanaka M, Anraku Y, Kita S, Ishii M, Kanamitsu K, Orba Y, Matsuura Y, Hall WW, Sawa H, Kida H, Matsuda A, Maenaka K. 2-thiouridine is a broad-spectrum antiviral nucleoside analogue against positive-strand RNA viruses. Proc Natl Acad Sci U S A 2023; 120:e2304139120. [PMID: 37831739 PMCID: PMC10589713 DOI: 10.1073/pnas.2304139120] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 08/23/2023] [Indexed: 10/15/2023] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections are causing significant morbidity and mortality worldwide. Furthermore, over 1 million cases of newly emerging or re-emerging viral infections, specifically dengue virus (DENV), are known to occur annually. Because no virus-specific and fully effective treatments against these or many other viruses have been approved, there is an urgent need for novel, effective therapeutic agents. Here, we identified 2-thiouridine (s2U) as a broad-spectrum antiviral ribonucleoside analogue that exhibited antiviral activity against several positive-sense single-stranded RNA (ssRNA+) viruses, such as DENV, SARS-CoV-2, and its variants of concern, including the currently circulating Omicron subvariants. s2U inhibits RNA synthesis catalyzed by viral RNA-dependent RNA polymerase, thereby reducing viral RNA replication, which improved the survival rate of mice infected with DENV2 or SARS-CoV-2 in our animal models. Our findings demonstrate that s2U is a potential broad-spectrum antiviral agent not only against DENV and SARS-CoV-2 but other ssRNA+ viruses.
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Affiliation(s)
- Kentaro Uemura
- Laboratory of Biomolecular Science, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo060-0812, Japan
- Drug Discovery and Disease Research Laboratory, Shionogi & Co. Ltd., Osaka561-0825, Japan
- Division of Molecular Pathobiology, International Institute for Zoonosis Control, Hokkaido University, Sapporo001-0020, Japan
- Laboratory of Virus Control, Center for Infectious Disease Education and Research, Osaka University, Osaka565-0871, Japan
| | - Haruaki Nobori
- Drug Discovery and Disease Research Laboratory, Shionogi & Co. Ltd., Osaka561-0825, Japan
| | - Akihiko Sato
- Drug Discovery and Disease Research Laboratory, Shionogi & Co. Ltd., Osaka561-0825, Japan
- Division of Molecular Pathobiology, International Institute for Zoonosis Control, Hokkaido University, Sapporo001-0020, Japan
- Institute for Vaccine Research and Development, Hokkaido University, Sapporo001-0021, Japan
| | - Shinsuke Toba
- Drug Discovery and Disease Research Laboratory, Shionogi & Co. Ltd., Osaka561-0825, Japan
- Division of Molecular Pathobiology, International Institute for Zoonosis Control, Hokkaido University, Sapporo001-0020, Japan
| | - Shinji Kusakabe
- Drug Discovery and Disease Research Laboratory, Shionogi & Co. Ltd., Osaka561-0825, Japan
- Division of Molecular Pathobiology, International Institute for Zoonosis Control, Hokkaido University, Sapporo001-0020, Japan
| | - Michihito Sasaki
- Division of Molecular Pathobiology, International Institute for Zoonosis Control, Hokkaido University, Sapporo001-0020, Japan
| | - Koshiro Tabata
- Division of Molecular Pathobiology, International Institute for Zoonosis Control, Hokkaido University, Sapporo001-0020, Japan
| | - Keita Matsuno
- Unit of Risk Analysis and Management, International Institute for Zoonosis Control, Hokkaido University, Sapporo001-0020, Japan
- One Health Research Center, Hokkaido University, Sapporo001-0020, Japan
- International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo001-0020, Japan
| | - Naoyoshi Maeda
- Center for Research and Education on Drug Discovery, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo060-0812, Japan
| | - Shiori Ito
- Laboratory of Biomolecular Science, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo060-0812, Japan
| | - Mayu Tanaka
- Laboratory of Biomolecular Science, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo060-0812, Japan
| | - Yuki Anraku
- Laboratory of Biomolecular Science, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo060-0812, Japan
| | - Shunsuke Kita
- Laboratory of Biomolecular Science, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo060-0812, Japan
| | - Mayumi Ishii
- Lead Exploration Unit, Drug Discovery Initiative, The University of Tokyo, Tokyo113-0033, Japan
| | - Kayoko Kanamitsu
- Lead Exploration Unit, Drug Discovery Initiative, The University of Tokyo, Tokyo113-0033, Japan
| | - Yasuko Orba
- Division of Molecular Pathobiology, International Institute for Zoonosis Control, Hokkaido University, Sapporo001-0020, Japan
- International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo001-0020, Japan
| | - Yoshiharu Matsuura
- Laboratory of Virus Control, Center for Infectious Disease Education and Research, Osaka University, Osaka565-0871, Japan
| | - William W. Hall
- International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo001-0020, Japan
- National Virus Reference Laboratory, School of Medicine, University College of Dublin, DublinD04, Ireland
- Global Virus Network, Baltimore, MD21201
| | - Hirofumi Sawa
- Division of Molecular Pathobiology, International Institute for Zoonosis Control, Hokkaido University, Sapporo001-0020, Japan
- Institute for Vaccine Research and Development, Hokkaido University, Sapporo001-0021, Japan
- One Health Research Center, Hokkaido University, Sapporo001-0020, Japan
- International Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo001-0020, Japan
- Global Virus Network, Baltimore, MD21201
| | - Hiroshi Kida
- Laboratory for Biologics Development, International Institute for Zoonosis Control, Hokkaido University, Sapporo001-0020, Japan
| | - Akira Matsuda
- Center for Research and Education on Drug Discovery, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo060-0812, Japan
| | - Katsumi Maenaka
- Laboratory of Biomolecular Science, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo060-0812, Japan
- Institute for Vaccine Research and Development, Hokkaido University, Sapporo001-0021, Japan
- Center for Research and Education on Drug Discovery, Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo060-0812, Japan
- Global Station for Biosurfaces and Drug Discovery, Hokkaido University, Sapporo060-0812, Japan
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Yamane Y, Ito J, Joana C, Fujita I, Tamura H, Maldonado PE, Doya K, Grün S. Neuronal Population Activity in Macaque Visual Cortices Dynamically Changes through Repeated Fixations in Active Free Viewing. eNeuro 2023; 10:ENEURO.0086-23.2023. [PMID: 37798110 PMCID: PMC10591287 DOI: 10.1523/eneuro.0086-23.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 09/20/2023] [Accepted: 10/02/2023] [Indexed: 10/07/2023] Open
Abstract
During free viewing, we move our eyes and fixate on objects to recognize the visual scene of our surroundings. To investigate the neural representation of objects in this process, we studied individual and population neuronal activity in three different visual regions of the brains of macaque monkeys (Macaca fuscata): the primary and secondary visual cortices (V1, V2) and the inferotemporal cortex (IT). We designed a task where the animal freely selected objects in a stimulus image to fixate on while we examined the relationship between spiking activity, the order of fixations, and the fixated objects. We found that activity changed across repeated fixations on the same object in all three recorded areas, with observed reductions in firing rates. Furthermore, the responses of individual neurons became sparser and more selective with individual objects. The population activity for individual objects also became distinct. These results suggest that visual neurons respond dynamically to repeated input stimuli through a smaller number of spikes, thereby allowing for discrimination between individual objects with smaller energy.
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Affiliation(s)
- Yukako Yamane
- Graduate School of Frontier Biosciences, Osaka University, Osaka 565-0871, Japan
- Okinawa Institute of Science and Technology Graduate University, Okinawa 904-0495, Japan
| | - Junji Ito
- Institute of Neuroscience and Medicine (INM-6 and INM-10) and Institute for Advanced Simulation (IAS-6), Jülich Research Centre, Jülich 52425, Germany
| | - Cristian Joana
- Institute of Neuroscience and Medicine (INM-6 and INM-10) and Institute for Advanced Simulation (IAS-6), Jülich Research Centre, Jülich 52425, Germany
- CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Ichiro Fujita
- Graduate School of Frontier Biosciences, Osaka University, Osaka 565-0871, Japan
- Center for Information and Neural Networks (CiNet), National Institute of Information and Communications Technology, Osaka University, Osaka 565-0871, Japan
| | - Hiroshi Tamura
- Graduate School of Frontier Biosciences, Osaka University, Osaka 565-0871, Japan
- Center for Information and Neural Networks (CiNet), National Institute of Information and Communications Technology, Osaka University, Osaka 565-0871, Japan
| | - Pedro E Maldonado
- Department of Neuroscience and Instituto de Neurosciencia Biomedica (BNI), Facultad de Medicina, Universidad de Chile, Santiago 8380453, Chile
| | - Kenji Doya
- Okinawa Institute of Science and Technology Graduate University, Okinawa 904-0495, Japan
| | - Sonja Grün
- Institute of Neuroscience and Medicine (INM-6 and INM-10) and Institute for Advanced Simulation (IAS-6), Jülich Research Centre, Jülich 52425, Germany
- Theoretical Systems Neurobiology, Rheinisch Westfaelische Technische Hochschule (RWTH) Aachen University, Aachen 52056, Germany
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Nagashima S, Primadharsini PP, Nishiyama T, Takahashi M, Murata K, Okamoto H. Development of a HiBiT-tagged reporter hepatitis E virus and its utility as an antiviral drug screening platform. J Virol 2023; 97:e0050823. [PMID: 37681960 PMCID: PMC10537679 DOI: 10.1128/jvi.00508-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 06/15/2023] [Indexed: 09/09/2023] Open
Abstract
Previously, we developed an infectious hepatitis E virus (HEV) harboring the nanoKAZ gene in the hypervariable region of the open reading frame 1 (ORF1) of the HEV3b (JE03-1760F/P10) genome and demonstrated the usefulness for screening anti-HEV drugs that inhibit the early infection process. In the present study, we constructed another reporter HEV (HEV3b-HiBiT) by placing a minimized HiBiT tag derived from NanoLuc luciferase at the 3'-end of the viral capsid (ORF2) coding sequence. It replicated efficiently in PLC/PRF/5 cells, produced membrane-associated particles identical to those of the parental virus, and was genetically stable and infectious. The HiBiT tag was fused to both secreted ORF2s (ORF2s-HiBiT) and ORF2c capsid protein (ORF2c-HiBiT). The ORF2c-HiBiT formed membrane-associated HEV particles (eHEV3b-HiBiT). By treating these particles with digitonin, we demonstrated that the HiBiT tag was expressed on the surface of capsid and was present inside the lipid membrane. To simplify the measurement of luciferase activity and provide a more convenient screening platform, we constructed an ORF2s-defective mutant (HEV3b-HiBiT/ΔORF2s) in which the secreted ORF2s are suppressed. We used this system to evaluate the effects of introducing small interfering RNAs and treatment with an inhibitor or accelerator of exosomal release on HEV egress and demonstrated that the effects on virus release can readily be analyzed. Therefore, HEV3b-HiBiT and HEV3b-HiBiT/ΔORF2s reporters may be useful for investigating the virus life cycle and can serve as a more convenient screening platform to search for candidate drugs targeting the late stage of HEV infection such as particle formation and release. IMPORTANCE The construction of recombinant infectious viruses harboring a stable luminescence reporter gene is essential for investigations of the viral life cycle, such as viral replication and pathogenesis, and the development of novel antiviral drugs. However, it is difficult to maintain the stability of a large foreign gene inserted into the viral genome. In the present study, we successfully generated a recombinant HEV harboring the 11-amino acid HiBiT tag in the ORF2 coding region and demonstrated the infectivity, efficient virus growth, particle morphology, and genetic stability, suggesting that this recombinant HEV is useful for in vitro assays. Furthermore, this system can serve as a more convenient screening platform for anti-HEV drugs. Thus, an infectious recombinant HEV is a powerful approach not only for elucidating the molecular mechanisms of the viral life cycle but also for the screening and development of novel antiviral agents.
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Affiliation(s)
- Shigeo Nagashima
- Division of Virology, Department of Infection and Immunity, Jichi Medical University School of Medicine, Tochigi, Japan
| | - Putu Prathiwi Primadharsini
- Division of Virology, Department of Infection and Immunity, Jichi Medical University School of Medicine, Tochigi, Japan
| | - Takashi Nishiyama
- Division of Virology, Department of Infection and Immunity, Jichi Medical University School of Medicine, Tochigi, Japan
| | - Masaharu Takahashi
- Division of Virology, Department of Infection and Immunity, Jichi Medical University School of Medicine, Tochigi, Japan
| | - Kazumoto Murata
- Division of Virology, Department of Infection and Immunity, Jichi Medical University School of Medicine, Tochigi, Japan
| | - Hiroaki Okamoto
- Division of Virology, Department of Infection and Immunity, Jichi Medical University School of Medicine, Tochigi, Japan
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Huang JR, Arii J, Hirai M, Nishimura M, Mori Y. Human herpesvirus 6A nuclear matrix protein U37 interacts with heat shock transcription factor 1 and activates the heat shock response. J Virol 2023; 97:e0071823. [PMID: 37671864 PMCID: PMC10537701 DOI: 10.1128/jvi.00718-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 07/10/2023] [Indexed: 09/07/2023] Open
Abstract
Nascent nucleocapsids of herpesviruses acquire a primary envelope during their nuclear export by budding through the inner nuclear membrane into the perinuclear space between the inner and outer nuclear membranes. This process is mediated by a conserved viral heterodimeric complex designated the nuclear egress complex, which consists of the nuclear matrix protein and the nuclear membrane protein. In addition to its essential roles during nuclear egress, the nuclear matrix protein has been shown to interact with intracellular signaling pathway molecules including NF-κB and IFN-β to affect viral or cellular gene expression. The human herpesvirus 6A (HHV-6A) U37 gene encodes a nuclear matrix protein, the role of which has not been analyzed. Here, we show that HHV-6A U37 activates the heat shock element promoter and induces the accumulation of the molecular chaperone Hsp90. Mechanistically, HHV-6A U37 interacts with heat shock transcription factor 1 (HSF1) and induces its phosphorylation at Ser-326. We report that pharmacological inhibition of HSF1, Hsp70, or Hsp90 decreases viral protein accumulation and viral replication. Taken together, our results lead us to propose a model in which HHV-6A U37 activates the heat shock response to support viral gene expression and replication. IMPORTANCE Human herpesvirus 6A (HHV-6A) is a dsDNA virus belonging to the Roseolovirus genus within the Betaherpesvirinae subfamily. It is frequently found in patients with neuroinflammatory disease, although its pathogenetic role, if any, awaits elucidation. The heat shock response is important for cell survival under stressful conditions that disrupt homeostasis. Our results indicate that HHV-6A U37 activates the heat shock element promoter and leads to the accumulation of heat shock proteins. Next, we show that the heat shock response is important for viral replication. Overall, our findings provide new insights into the function of HHV-6A U37 in host cell signaling and identify potential cellular targets involved in HHV-6A pathogenesis and replication.
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Affiliation(s)
- Jing Rin Huang
- Division of Clinical Virology, Center for Infectious Diseases, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Jun Arii
- Division of Clinical Virology, Center for Infectious Diseases, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Mansaku Hirai
- Division of Clinical Virology, Center for Infectious Diseases, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Mitsuhiro Nishimura
- Division of Clinical Virology, Center for Infectious Diseases, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Yasuko Mori
- Division of Clinical Virology, Center for Infectious Diseases, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
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Katoh K, Katoh Y, Kubo A, Iida M, Ikeda Y, Iwata T, Nishio H, Sugawara M, Kato D, Suematsu M, Hirai S, Kawana K. Serum Free Fatty Acid Changes Caused by High Expression of Stearoyl-CoA Desaturase 1 in Tumor Tissues Are Early Diagnostic Markers for Ovarian Cancer. Cancer Res Commun 2023; 3:1840-1852. [PMID: 37712874 PMCID: PMC10498943 DOI: 10.1158/2767-9764.crc-23-0138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 06/17/2023] [Accepted: 08/16/2023] [Indexed: 09/16/2023]
Abstract
Ovarian cancer has a poor prognosis and is difficult to detect in early stages. Therefore, developing new diagnostic markers for early-stage ovarian cancer is critical. Here, we developed a diagnostic marker for early-stage ovarian cancer on the basis of fatty acid metabolism characteristics of cancer cells. The expression of various fatty acid metabolizing enzymes such as stearoyl-CoA desaturase 1 (SCD1) was altered in early-stage ovarian cancer tissue compared with that in normal ovarian tissue. Changes in the expression of fatty acid metabolizing enzymes, particularly SCD1, in cancer tissues were found to alter concentrations of multiple free fatty acids (FFA) in serum. We were the first to show that fatty acid metabolic characteristics in tissues are related to the FFA composition of serum. Surprisingly, patients with stage I/II ovarian cancer also showed significant changes in serum levels of eight FFAs, which can be early diagnostic markers. Finally, using statistical analysis, an optimal early diagnostic model combining oleic and arachidic acid levels, fatty acids associated with SCD1, was established and confirmed to have higher diagnostic power than CA125, regardless of histology. Thus, our newly developed diagnostic model using serum FFAs may be a powerful tool for the noninvasive early detection of ovarian cancer. SIGNIFICANCE Measurement of serum FFA levels by changes in the expression of fatty acid metabolizing enzymes in tumor tissue would allow early detection of ovarian cancer. In particular, the SCD1-associated FFAs, oleic and arachidic acid, would be powerful new screening tools for early-stage ovarian cancer.
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Affiliation(s)
- Kanoko Katoh
- Department of Obstetrics and Gynecology, Nihon University School of Medicine, Tokyo, Japan
| | - Yuki Katoh
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine, Tokyo, Japan
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
| | - Akiko Kubo
- Department of Biochemistry, Keio University School of Medicine, Tokyo, Japan
| | - Miho Iida
- Department of Preventive Medicine and Public Health, Keio University School of Medicine, Tokyo, Japan
| | - Yuji Ikeda
- Department of Obstetrics and Gynecology, Nihon University School of Medicine, Tokyo, Japan
| | - Takashi Iwata
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
| | - Hiroshi Nishio
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
| | - Masaki Sugawara
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Tokyo, Japan
| | - Daiki Kato
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Makoto Suematsu
- Department of Biochemistry, Keio University School of Medicine, Tokyo, Japan
- WPI-Bio2Q Research Center and Central Institute for Experimental Animals, Kawasaki, Japan
| | - Shuichi Hirai
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine, Tokyo, Japan
| | - Kei Kawana
- Department of Obstetrics and Gynecology, Nihon University School of Medicine, Tokyo, Japan
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Ikeda T, Shimizu R, Nasser H, Carpenter MA, Cheng AZ, Brown WL, Sauter D, Harris RS. APOBEC3 degradation is the primary function of HIV-1 Vif determining virion infectivity in the myeloid cell line THP-1. mBio 2023; 14:e0078223. [PMID: 37555667 PMCID: PMC10470580 DOI: 10.1128/mbio.00782-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 06/22/2023] [Indexed: 08/10/2023] Open
Abstract
HIV-1 must overcome multiple innate antiviral mechanisms to replicate in CD4+ T lymphocytes and macrophages. Previous studies have demonstrated that the apolipoprotein B mRNA editing enzyme polypeptide-like 3 (APOBEC3, A3) family of proteins (at least A3D, A3F, A3G, and stable A3H haplotypes) contribute to HIV-1 restriction in CD4+ T lymphocytes. Virus-encoded virion infectivity factor (Vif) counteracts this antiviral activity by degrading A3 enzymes allowing HIV-1 replication in infected cells. In addition to A3 proteins, Vif also targets other cellular proteins in CD4+ T lymphocytes, including PPP2R5 proteins. However, whether Vif primarily degrades only A3 proteins during viral replication is currently unknown. Herein, we describe the development and characterization of A3F-, A3F/A3G-, and A3A-to-A3G-null THP-1 cells. In comparison to Vif-proficient HIV-1, Vif-deficient viruses have substantially reduced infectivity in parental and A3F-null THP-1 cells, and a more modest decrease in infectivity in A3F/A3G-null cells. Remarkably, disruption of A3A-A3G protein expression completely restores the infectivity of Vif-deficient viruses in THP-1 cells. These results indicate that the primary function of Vif during infectious HIV-1 production from THP-1 cells is the targeting and degradation of A3 enzymes. IMPORTANCE HIV-1 Vif neutralizes the HIV-1 restriction activity of A3 proteins. However, it is currently unclear whether Vif has additional essential cellular targets. To address this question, we disrupted A3A to A3G genes in the THP-1 myeloid cell line using CRISPR and compared the infectivity of wild-type HIV-1 and Vif mutants with the selective A3 neutralization activities. Our results demonstrate that the infectivity of Vif-deficient HIV-1 and the other Vif mutants is fully restored by ablating the expression of cellular A3A to A3G proteins. These results indicate that A3 proteins are the only essential target of Vif that is required for fully infectious HIV-1 production from THP-1 cells.
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Affiliation(s)
- Terumasa Ikeda
- Division of Molecular Virology and Genetics, Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto, Japan
| | - Ryo Shimizu
- Division of Molecular Virology and Genetics, Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto, Japan
- Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Hesham Nasser
- Division of Molecular Virology and Genetics, Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto, Japan
- Department of Clinical Pathology, Faculty of Medicine, Suez Canal University, Ismailia, Egypt
| | - Michael A. Carpenter
- Department of Biochemistry and Structural Biology, University of Texas Health San Antonio, San Antonio, Texas, USA
- Howard Hughes Medical Institute, University of Texas Health San Antonio, San Antonio, Texas, USA
| | - Adam Z. Cheng
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, Minnesota, USA
- Institute for Molecular Virology, University of Minnesota, Minneapolis, Minnesota, USA
| | - William L. Brown
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, Minnesota, USA
- Institute for Molecular Virology, University of Minnesota, Minneapolis, Minnesota, USA
| | - Daniel Sauter
- Institute for Medical Virology and Epidemiology of Viral Diseases, University Hospital Tübingen, Tübingen, Germany
| | - Reuben S. Harris
- Department of Biochemistry and Structural Biology, University of Texas Health San Antonio, San Antonio, Texas, USA
- Howard Hughes Medical Institute, University of Texas Health San Antonio, San Antonio, Texas, USA
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Sugimoto A, Watanabe T, Matsuoka K, Okuno Y, Yanagi Y, Narita Y, Mabuchi S, Nobusue H, Sugihara E, Hirayama M, Ide T, Onouchi T, Sato Y, Kanda T, Saya H, Iwatani Y, Kimura H, Murata T. Growth Transformation of B Cells by Epstein-Barr Virus Requires IMPDH2 Induction and Nucleolar Hypertrophy. Microbiol Spectr 2023; 11:e0044023. [PMID: 37409959 PMCID: PMC10433962 DOI: 10.1128/spectrum.00440-23] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 06/20/2023] [Indexed: 07/07/2023] Open
Abstract
The in vitro growth transformation of primary B cells by Epstein-Barr virus (EBV) is the initial step in the development of posttransplant lymphoproliferative disorder (PTLD). We performed electron microscopic analysis and immunostaining of primary B cells infected with wild-type EBV. Interestingly, the nucleolar size was increased by two days after infection. A recent study found that nucleolar hypertrophy, which is caused by the induction of the IMPDH2 gene, is required for the efficient promotion of growth in cancers. In the present study, RNA-seq revealed that the IMPDH2 gene was significantly induced by EBV and that its level peaked at day 2. Even without EBV infection, the activation of primary B cells by the CD40 ligand and interleukin-4 increased IMPDH2 expression and nucleolar hypertrophy. Using EBNA2 or LMP1 knockout viruses, we found that EBNA2 and MYC, but not LMP1, induced the IMPDH2 gene during primary infections. IMPDH2 inhibition by mycophenolic acid (MPA) blocked the growth transformation of primary B cells by EBV, leading to smaller nucleoli, nuclei, and cells. Mycophenolate mofetil (MMF), which is a prodrug of MPA that is approved for use as an immunosuppressant, was tested in a mouse xenograft model. Oral MMF significantly improved the survival of mice and reduced splenomegaly. Taken together, these results indicate that EBV induces IMPDH2 expression through EBNA2-dependent and MYC-dependent mechanisms, leading to the hypertrophy of the nucleoli, nuclei, and cells as well as efficient cell proliferation. Our results provide basic evidence that IMPDH2 induction and nucleolar enlargement are crucial for B cell transformation by EBV. In addition, the use of MMF suppresses PTLD. IMPORTANCE EBV infections cause nucleolar enlargement via the induction of IMPDH2, which are essential for B cell growth transformation by EBV. Although the significance of IMPDH2 induction and nuclear hypertrophy in the tumorigenesis of glioblastoma has been reported, EBV infection brings about the change quickly by using its transcriptional cofactor, EBNA2, and MYC. Moreover, we present here, for the novel, basic evidence that an IMPDH2 inhibitor, namely, MPA or MMF, can be used for EBV-positive posttransplant lymphoproliferative disorder (PTLD).
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Affiliation(s)
- Atsuko Sugimoto
- Department of Virology, Fujita Health University School of Medicine, Toyoake, Japan
- Clinical Research Center, National Hospital Organization Nagoya Medical Center, Nagoya, Japan
- Department of Virology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Takahiro Watanabe
- Department of Virology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kazuhiro Matsuoka
- Clinical Research Center, National Hospital Organization Nagoya Medical Center, Nagoya, Japan
| | - Yusuke Okuno
- Department of Virology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Yusuke Yanagi
- Department of Virology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yohei Narita
- Division of Infectious Disease, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Seiyo Mabuchi
- Department of Virology, Nagoya University Graduate School of Medicine, Nagoya, Japan
- Department of Pathology and Laboratory Medicine, Nagoya University Hospital, Nagoya, Japan
| | - Hiroyuki Nobusue
- Division of Gene Regulation, Cancer Center, Research Promotion Headquarters, Fujita Health University, Toyoake, Japan
| | - Eiji Sugihara
- Division of Gene Regulation, Cancer Center, Research Promotion Headquarters, Fujita Health University, Toyoake, Japan
- Open Facility Center, Research Promotion Headquarters, Fujita Health University, Toyoake, Japan
| | - Masaya Hirayama
- Department of Morphology and Diagnostic Pathology, School of Medical Sciences, Fujita Health University, Toyoake, Japan
- Department of Biomedical Molecular Sciences, Graduate School of Medicine, Fujita Health University, Toyoake, Japan
| | - Tomihiko Ide
- Department of Virology, Fujita Health University School of Medicine, Toyoake, Japan
- Open Facility Center, Research Promotion Headquarters, Fujita Health University, Toyoake, Japan
| | - Takanori Onouchi
- Open Facility Center, Research Promotion Headquarters, Fujita Health University, Toyoake, Japan
| | - Yoshitaka Sato
- Department of Virology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Teru Kanda
- Department of Microbiology, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Hideyuki Saya
- Division of Gene Regulation, Cancer Center, Research Promotion Headquarters, Fujita Health University, Toyoake, Japan
| | - Yasumasa Iwatani
- Clinical Research Center, National Hospital Organization Nagoya Medical Center, Nagoya, Japan
| | - Hiroshi Kimura
- Department of Virology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Takayuki Murata
- Department of Virology, Fujita Health University School of Medicine, Toyoake, Japan
- Department of Virology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Toyoda M, Tan TS, Motozono C, Barabona G, Yonekawa A, Shimono N, Minami R, Nagasaki Y, Miyashita Y, Oshiumi H, Nakamura K, Matsushita S, Kuwata T, Ueno T. Evaluation of Neutralizing Activity against Omicron Subvariants in BA.5 Breakthrough Infection and Three-Dose Vaccination Using a Novel Chemiluminescence-Based, Virus-Mediated Cytopathic Assay. Microbiol Spectr 2023; 11:e0066023. [PMID: 37310218 PMCID: PMC10433814 DOI: 10.1128/spectrum.00660-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 05/28/2023] [Indexed: 06/14/2023] Open
Abstract
Neutralizing potency of humoral immune responses induced by prior infection or vaccination is vital for protecting of individuals and population against severe acute respiratory syndrome-related coronavirus 2 (SARS-CoV-2). However, the emergence of viral variants that can evade neutralization by vaccine- or infection-induced immunity is a significant public health threat and requires continuous monitoring. Here, we have developed a novel scalable chemiluminescence-based assay for assessing SARS-CoV-2-induced cytopathic effect to quantify the neutralizing activity of antisera. The assay leverages the correlation between host cell viability and ATP levels in culture to measure the cytopathic effect on target cells induced by clinically isolated, replication-competent, authentic SARS-CoV-2. With this assay, we demonstrate that the recently arisen Omicron subvariants BQ.1.1 and XBB.1 display a significant decrease in sensitivity to neutralization by antibodies elicited from breakthrough infections with Omicron BA.5 and from receipt of three doses of mRNA vaccines. Thus, this scalable neutralizing assay provides a useful platform to assess the potency of acquired humoral immunity against newly emerging SARS-CoV-2 variants. IMPORTANCE The ongoing global pandemic of SARS-CoV-2 has emphasized the importance of neutralizing immunity in protecting individuals and populations against severe respiratory illness. In light of the emergence of viral variants with the potential to evade immunity, continuous monitoring is imperative. A virus plaque reduction neutralization test (PRNT) is a "gold standard" assay for analyzing neutralizing activity for authentic viruses that form plaques, like influenza virus, dengue virus, and SARS-CoV-2. However, this method is labor intensive and is not efficient for performing large-scale neutralization assays on patient specimens. The assay system established in this study allows for the detection of a patient's neutralizing activity by simply adding an ATP detection reagent, providing a simple evaluation system for neutralizing activity of antisera as an alternative to the plaque reduction method. Our extended analysis of the Omicron subvariants highlights their increasing capability to evade neutralization by both vaccine- and infection-induced humoral immunity.
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Affiliation(s)
- Mako Toyoda
- Division of Infection and Immunity, Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto, Japan
- Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Toong Seng Tan
- Division of Infection and Immunity, Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto, Japan
| | - Chihiro Motozono
- Division of Infection and Immunity, Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto, Japan
| | - Godfrey Barabona
- Division of Infection and Immunity, Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto, Japan
| | - Akiko Yonekawa
- Department of Medicine and Biosystemic Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Nobuyuki Shimono
- Department of Medicine and Biosystemic Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Rumi Minami
- Internal Medicine, Clinical Research Institute, National Hospital Organization, Kyushu Medical Center, Fukuoka, Japan
| | - Yoji Nagasaki
- Division of Infectious Diseases, Clinical Research Institute, National Hospitalization Organization, Kyushu Medical Center, Fukuoka, Japan
| | - Yusuke Miyashita
- Department of Immunology, Graduate School of Medical Sciences, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
- Department of Pediatrics, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Hiroyuki Oshiumi
- Department of Immunology, Graduate School of Medical Sciences, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Kimitoshi Nakamura
- Department of Pediatrics, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Shuzo Matsushita
- Division of Clinical Retrovirology, Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto, Japan
| | - Takeo Kuwata
- Division of Clinical Retrovirology, Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto, Japan
| | - Takamasa Ueno
- Division of Infection and Immunity, Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto, Japan
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Takubo K, Htun PW, Ueda T, Sera Y, Iwasaki M, Koizumi M, Shiroshita K, Kobayashi H, Haraguchi M, Watanuki S, Honda ZI, Yamasaki N, Nakamura-Ishizu A, Arai F, Motoyama N, Hatta T, Natsume T, Suda T, Honda H. MBTD1 preserves adult hematopoietic stem cell pool size and function. Proc Natl Acad Sci U S A 2023; 120:e2206860120. [PMID: 37523546 PMCID: PMC10410756 DOI: 10.1073/pnas.2206860120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 06/28/2023] [Indexed: 08/02/2023] Open
Abstract
Mbtd1 (mbt domain containing 1) encodes a nuclear protein containing a zinc finger domain and four malignant brain tumor (MBT) repeats. We previously generated Mbtd1-deficient mice and found that MBTD1 is highly expressed in fetal hematopoietic stem cells (HSCs) and sustains the number and function of fetal HSCs. However, since Mbtd1-deficient mice die soon after birth possibly due to skeletal abnormalities, its role in adult hematopoiesis remains unclear. To address this issue, we generated Mbtd1 conditional knockout mice and analyzed adult hematopoietic tissues deficient in Mbtd1. We observed that the numbers of HSCs and progenitors increased and Mbtd1-deficient HSCs exhibited hyperactive cell cycle, resulting in a defective response to exogenous stresses. Mechanistically, we found that MBTD1 directly binds to the promoter region of FoxO3a, encoding a forkhead protein essential for HSC quiescence, and interacts with components of TIP60 chromatin remodeling complex and other proteins involved in HSC and other stem cell functions. Restoration of FOXO3a activity in Mbtd1-deficient HSCs in vivo rescued cell cycle and pool size abnormalities. These findings indicate that MBTD1 is a critical regulator for HSC pool size and function, mainly through the maintenance of cell cycle quiescence by FOXO3a.
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Affiliation(s)
- Keiyo Takubo
- Department of Stem Cell Biology, Research Institute, National Center for Global Health and Medicine, Tokyo162-8655, Japan
| | - Phyo Wai Htun
- Medical Department, 7887 Healthcare Call Center, Yangon11062, Myanmar
| | - Takeshi Ueda
- Department of Biochemistry, Kindai University Faculty of Medicine,Sayama-shi, Osaka589-8511, Japan
| | - Yasuyuki Sera
- Field of Human Disease Models, Major in Advanced Life Sciences and Medicine, Institute of Laboratory Animals, Tokyo Women’s Medical University, Shinjuku-ku, Tokyo162-8666, Japan
| | - Masayuki Iwasaki
- Field of Human Disease Models, Major in Advanced Life Sciences and Medicine, Institute of Laboratory Animals, Tokyo Women’s Medical University, Shinjuku-ku, Tokyo162-8666, Japan
| | - Miho Koizumi
- Field of Human Disease Models, Major in Advanced Life Sciences and Medicine, Institute of Laboratory Animals, Tokyo Women’s Medical University, Shinjuku-ku, Tokyo162-8666, Japan
| | - Kohei Shiroshita
- Department of Stem Cell Biology, Research Institute, National Center for Global Health and Medicine, Tokyo162-8655, Japan
| | - Hiroshi Kobayashi
- Department of Stem Cell Biology, Research Institute, National Center for Global Health and Medicine, Tokyo162-8655, Japan
| | - Miho Haraguchi
- Department of Stem Cell Biology, Research Institute, National Center for Global Health and Medicine, Tokyo162-8655, Japan
| | - Shintaro Watanuki
- Department of Stem Cell Biology, Research Institute, National Center for Global Health and Medicine, Tokyo162-8655, Japan
| | - Zen-ichiro Honda
- Health Care Center and Graduate School of Humanities and Sciences, Institute of Environmental Science for Human Life, Ochanomizu University, Bunkyo-ku, Tokyo112-8611, Japan
| | - Norimasa Yamasaki
- Department of Molecular Oncology, Research Institute of Radiation Biology and Medicine, Hiroshima University, Minami-ku, Hiroshima734-8553, Japan
| | - Ayako Nakamura-Ishizu
- Department of Microscopic and Developmental Anatomy, Tokyo Women's Medical University, Tokyo162-8666, Japan
| | - Fumio Arai
- Department of Stem Cell Biology and Medicine, Graduate School of Medical Science, Kyusyu University, Fukuoka812-8582, Japan
| | - Noboru Motoyama
- Department of Human Nutrition, Sugiyama Jogakuen University School of Life Studies, Nagoya464-8662, Japan
| | - Tomohisa Hatta
- Molecular Profiling Research Center for Drug Discovery, National Institute of Advanced Industrial Science and Technology, Tokyo135-0064, Japan
| | - Tohru Natsume
- Molecular Profiling Research Center for Drug Discovery, National Institute of Advanced Industrial Science and Technology, Tokyo135-0064, Japan
| | - Toshio Suda
- Cancer Science Institute of Singapore, National University of Singapore Center for Translational Medicine, Singapore117599, Singapore
| | - Hiroaki Honda
- Field of Human Disease Models, Major in Advanced Life Sciences and Medicine, Institute of Laboratory Animals, Tokyo Women’s Medical University, Shinjuku-ku, Tokyo162-8666, Japan
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42
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Hiraike Y, Saito K, Oguchi M, Wada T, Toda G, Tsutsumi S, Bando K, Sagawa J, Nagano G, Ohno H, Kubota N, Kubota T, Aburatani H, Kadowaki T, Waki H, Yanagimoto S, Yamauchi T. NFIA in adipocytes reciprocally regulates mitochondrial and inflammatory gene program to improve glucose homeostasis. Proc Natl Acad Sci U S A 2023; 120:e2308750120. [PMID: 37487068 PMCID: PMC10401007 DOI: 10.1073/pnas.2308750120] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 06/20/2023] [Indexed: 07/26/2023] Open
Abstract
Adipose tissue is central to regulation of energy homeostasis. Adaptive thermogenesis, which relies on mitochondrial oxidative phosphorylation (Ox-Phos), dissipates energy to counteract obesity. On the other hand, chronic inflammation in adipose tissue is linked to type 2 diabetes and obesity. Here, we show that nuclear factor I-A (NFIA), a transcriptional regulator of brown and beige adipocytes, improves glucose homeostasis by upregulation of Ox-Phos and reciprocal downregulation of inflammation. Mice with transgenic expression of NFIA in adipocytes exhibited improved glucose tolerance and limited weight gain. NFIA up-regulates Ox-Phos and brown-fat-specific genes by enhancer activation that involves facilitated genomic binding of PPARγ. In contrast, NFIA in adipocytes, but not in macrophages, down-regulates proinflammatory cytokine genes to ameliorate adipose tissue inflammation. NFIA binds to regulatory region of the Ccl2 gene, which encodes proinflammatory cytokine MCP-1 (monocyte chemoattractant protein-1), to down-regulate its transcription. CCL2 expression was negatively correlated with NFIA expression in human adipose tissue. These results reveal the beneficial effect of NFIA on glucose and body weight homeostasis and also highlight previously unappreciated role of NFIA in suppressing adipose tissue inflammation.
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Affiliation(s)
- Yuta Hiraike
- Division for Health Service Promotion, The University of Tokyo, Tokyo113-0033, Japan
- The University of Tokyo Excellent Young Researcher Program, The University of Tokyo, Tokyo113-8654, Japan
| | - Kaede Saito
- Division for Health Service Promotion, The University of Tokyo, Tokyo113-0033, Japan
| | - Misato Oguchi
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo113-8655, Japan
| | - Takahito Wada
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo113-8655, Japan
| | - Gotaro Toda
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo113-8655, Japan
| | - Shuichi Tsutsumi
- Genome Science and Medicine Laboratory, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo153-8904, Japan
| | - Kana Bando
- Laboratory for Animal Resources and Genetic Engineering, RIKEN Center for Biosystems Dynamics Research, Kobe650-0047, Japan
| | - Junji Sagawa
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima734-8551, Japan
| | - Gaku Nagano
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima734-8551, Japan
| | - Haruya Ohno
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima734-8551, Japan
| | - Naoto Kubota
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo113-8655, Japan
- Department of Clinical Nutrition Therapy, The University of Tokyo Hospital, Tokyo113-8655, Japan
| | - Tetsuya Kubota
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo113-8655, Japan
- Division of Diabetes and Metabolism, The Institute of Medical Science, Asahi Life Foundation, Tokyo103-0002, Japan
- National Institutes of Biomedical Innovation, Health and Nutrition, Tokyo162-8636, Japan
| | - Hiroyuki Aburatani
- Genome Science and Medicine Laboratory, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo153-8904, Japan
| | | | - Hironori Waki
- Department of Diabetes and Endocrinology, Akita University Graduate School of Medicine, Akita010-8543, Japan
| | - Shintaro Yanagimoto
- Division for Health Service Promotion, The University of Tokyo, Tokyo113-0033, Japan
| | - Toshimasa Yamauchi
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo113-8655, Japan
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Yahiro T, Kataoka N, Nakamura K. Two Ascending Thermosensory Pathways from the Lateral Parabrachial Nucleus That Mediate Behavioral and Autonomous Thermoregulation. J Neurosci 2023; 43:5221-5240. [PMID: 37339876 PMCID: PMC10342230 DOI: 10.1523/jneurosci.0643-23.2023] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 06/03/2023] [Accepted: 06/10/2023] [Indexed: 06/22/2023] Open
Abstract
Thermoregulatory behavior in homeothermic animals is an innate behavior to defend body core temperature from environmental thermal challenges in coordination with autonomous thermoregulatory responses. In contrast to the progress in understanding the central mechanisms of autonomous thermoregulation, those of behavioral thermoregulation remain poorly understood. We have previously shown that the lateral parabrachial nucleus (LPB) mediates cutaneous thermosensory afferent signaling for thermoregulation. To understand the thermosensory neural network for behavioral thermoregulation, in the present study, we investigated the roles of ascending thermosensory pathways from the LPB in avoidance behavior from innocuous heat and cold in male rats. Neuronal tracing revealed two segregated groups of LPB neurons projecting to the median preoptic nucleus (MnPO), a thermoregulatory center (LPB→MnPO neurons), and those projecting to the central amygdaloid nucleus (CeA), a limbic emotion center (LPB→CeA neurons). While LPB→MnPO neurons include separate subgroups activated by heat or cold exposure of rats, LPB→CeA neurons were only activated by cold exposure. By selectively inhibiting LPB→MnPO or LPB→CeA neurons using tetanus toxin light chain or chemogenetic or optogenetic techniques, we found that LPB→MnPO transmission mediates heat avoidance, whereas LPB→CeA transmission contributes to cold avoidance. In vivo electrophysiological experiments showed that skin cooling-evoked thermogenesis in brown adipose tissue requires not only LPB→MnPO neurons but also LPB→CeA neurons, providing a novel insight into the central mechanism of autonomous thermoregulation. Our findings reveal an important framework of central thermosensory afferent pathways to coordinate behavioral and autonomous thermoregulation and to generate the emotions of thermal comfort and discomfort that drive thermoregulatory behavior.SIGNIFICANCE STATEMENT Coordination of behavioral and autonomous thermoregulation is important for maintaining thermal homeostasis in homeothermic animals. However, the central mechanism of thermoregulatory behaviors remains poorly understood. We have previously shown that the lateral parabrachial nucleus (LPB) mediates ascending thermosensory signaling that drives thermoregulatory behavior. In this study, we found that one pathway from the LPB to the median preoptic nucleus mediates heat avoidance, whereas the other pathway from the LPB to the central amygdaloid nucleus is required for cold avoidance. Surprisingly, both pathways are required for skin cooling-evoked thermogenesis in brown adipose tissue, an autonomous thermoregulatory response. This study provides a central thermosensory network that coordinates behavioral and autonomous thermoregulation and generates thermal comfort and discomfort that drive thermoregulatory behavior.
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Affiliation(s)
- Takaki Yahiro
- Department of Integrative Physiology, Nagoya University Graduate School of Medicine, Nagoya, 466-8550, Japan
| | - Naoya Kataoka
- Department of Integrative Physiology, Nagoya University Graduate School of Medicine, Nagoya, 466-8550, Japan
- Nagoya University Institute for Advanced Research, Nagoya, 464-8601, Japan
| | - Kazuhiro Nakamura
- Department of Integrative Physiology, Nagoya University Graduate School of Medicine, Nagoya, 466-8550, Japan
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Uddin MK, Watanabe T, Arata M, Sato Y, Kimura H, Murata T. Epstein-Barr Virus BBLF1 Mediates Secretory Vesicle Transport to Facilitate Mature Virion Release. J Virol 2023; 97:e0043723. [PMID: 37195206 PMCID: PMC10308924 DOI: 10.1128/jvi.00437-23] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 04/20/2023] [Indexed: 05/18/2023] Open
Abstract
Enveloped viruses undergo a complex multistep process of assembly, maturation, and release into the extracellular space utilizing host secretory machinery. Several studies of the herpesvirus subfamily have shown that secretory vesicles derived from the trans-Golgi network (TGN) or endosomes transport virions into the extracellular space. However, the regulatory mechanism underlying the release of Epstein-Barr virus, a human oncovirus, remains unclear. We demonstrate that disruption of BBLF1, a tegument component, suppressed viral release and resulted in the accumulation of viral particles on the inner side of the vesicular membrane. Organelle separation revealed the accumulation of infectious viruses in fractions containing vesicles derived from the TGN and late endosomes. Deficiency of an acidic amino acid cluster in BBLF1 reduced viral secretion. Moreover, truncational deletion of the C-terminal region of BBLF1 increased infectious virus production. These findings suggest that BBLF1 regulates the viral release pathway and reveal a new aspect of tegument protein function. IMPORTANCE Several viruses have been linked to the development of cancer in humans. Epstein-Barr virus (EBV), the first identified human oncovirus, causes a wide range of cancers. Accumulating literature has demonstrated the role of viral reactivation in tumorigenesis. Elucidating the functions of viral lytic genes induced by reactivation, and the mechanisms of lytic infection, is essential to understanding pathogenesis. Progeny viral particles synthesized during lytic infection are released outside the cell after the assembly, maturation, and release steps, leading to further infection. Through functional analysis using BBLF1-knockout viruses, we demonstrated that BBLF1 promotes viral release. The acidic amino acid cluster in BBLF1 was also important for viral release. Conversely, mutants lacking the C terminus exhibited more efficient virus production, suggesting that BBLF1 is involved in the fine-tuning of progeny release during the EBV life cycle.
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Affiliation(s)
- Md Kamal Uddin
- Department of Virology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Takahiro Watanabe
- Department of Virology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Masataka Arata
- Department of Virology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Yoshitaka Sato
- Department of Virology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
- Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST), Kawaguchi, Saitama, Japan
| | - Hiroshi Kimura
- Department of Virology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Takayuki Murata
- Department of Virology, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
- Department of Virology and Parasitology, Fujita Health University School of Medicine, Toyoake, Aichi, Japan
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Tsuyama T, Sato Y, Yoshizawa T, Matsuoka T, Yamagata K. Hypoxia causes pancreatic β-cell dysfunction and impairs insulin secretion by activating the transcriptional repressor BHLHE40. EMBO Rep 2023:e56227. [PMID: 37341148 PMCID: PMC10398664 DOI: 10.15252/embr.202256227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 05/28/2023] [Accepted: 06/04/2023] [Indexed: 06/22/2023] Open
Abstract
Hypoxia can occur in pancreatic β-cells in type 2 diabetes. Although hypoxia exerts deleterious effects on β-cell function, the associated mechanisms are largely unknown. Here, we show that the transcriptional repressor basic helix-loop-helix family member e40 (BHLHE40) is highly induced in hypoxic mouse and human β-cells and suppresses insulin secretion. Conversely, BHLHE40 deficiency in hypoxic MIN6 cells or β-cells of ob/ob mice reverses defects in insulin secretion. Mechanistically, BHLHE40 represses the expression of Mafa, encoding the transcription factor musculoaponeurotic fibrosarcoma oncogene family A (MAFA), by attenuating the binding of pancreas/duodenum homeobox protein 1 (PDX1) to its enhancer region. Impaired insulin secretion in hypoxic β-cells was recovered by MAFA re-expression. Collectively, our work identifies BHLHE40 as a key hypoxia-induced transcriptional repressor in β-cells that inhibit insulin secretion by suppressing MAFA expression.
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Affiliation(s)
- Tomonori Tsuyama
- Center for Metabolic Regulation of Healthy Aging (CMHA), Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Yoshifumi Sato
- Department of Medical Biochemistry, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Tatsuya Yoshizawa
- Department of Medical Biochemistry, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
| | - Takaaki Matsuoka
- First Department of Internal Medicine, Wakayama Medical University, Wakayama, Japan
| | - Kazuya Yamagata
- Center for Metabolic Regulation of Healthy Aging (CMHA), Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
- Department of Medical Biochemistry, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan
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Kasuga Y, Ouda R, Watanabe M, Sun X, Kimura M, Hatakeyama S, Kobayashi KS. FBXO11 constitutes a major negative regulator of MHC class II through ubiquitin-dependent proteasomal degradation of CIITA. Proc Natl Acad Sci U S A 2023; 120:e2218955120. [PMID: 37279268 DOI: 10.1073/pnas.2218955120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 03/27/2023] [Indexed: 06/08/2023] Open
Abstract
Major histocompatibility complex (MHC) class I and II molecules play critical roles in the activation and regulation of adaptive immunity through antigen presentation to CD8+ and CD4+ T cells, respectively. Strict regulation of MHC expression is critical for proper immune responses. CIITA (MHC class II transactivator), an NLR (nucleotide-binding domain, leucine-rich-repeat containing) protein, is a master regulator of MHC class II (MHC-II) gene transcription. Although it has been known that CIITA activity is regulated at the transcriptional and protein levels, the mechanism to determine CIITA protein level has not been elucidated. Here, we show that FBXO11 is a bona fide E3 ligase of CIITA and regulates CIITA protein level through ubiquitination-mediated degradation. A nonbiased proteomic approach for CIITA-binding protein identified FBXO11, a member of the Skp1-Cullin-1-F-box E3 ligase complex, as a binding partner of CIITA but not MHC class I transactivator, NLRC5. The cycloheximide chase assay showed that the half-life of CIITA is mainly regulated by FBXO11 via the ubiquitin-proteasome system. The expression of FBXO11 led to the reduced MHC-II at the promoter activity level, transcriptional level, and surface expression level through downregulation of CIITA. Moreover, human and mouse FBXO11-deficient cells display increased levels of MHC-II and related genes. In normal and cancer tissues, FBXO11 expression level is negatively correlated with MHC-II. Interestingly, the expression of FBXO11, along with CIITA, is associated with prognosis of cancer patients. Therefore, FBXO11 is a critical regulator to determine the level of MHC-II, and its expression may serve as a biomarker for cancer.
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Affiliation(s)
- Yusuke Kasuga
- Department of Immunology, Hokkaido University, Graduate School of Medicine, Sapporo 060-8638, Japan
| | - Ryota Ouda
- Department of Immunology, Hokkaido University, Graduate School of Medicine, Sapporo 060-8638, Japan
| | - Masashi Watanabe
- Department of Biochemistry, Hokkaido University, Graduate School of Medicine, Sapporo 060-8638, Japan
| | - Xin Sun
- Department of Immunology, Hokkaido University, Graduate School of Medicine, Sapporo 060-8638, Japan
| | - Miki Kimura
- Department of Immunology, Hokkaido University, Graduate School of Medicine, Sapporo 060-8638, Japan
| | - Shigetsugu Hatakeyama
- Department of Biochemistry, Hokkaido University, Graduate School of Medicine, Sapporo 060-8638, Japan
| | - Koichi S Kobayashi
- Department of Immunology, Hokkaido University, Graduate School of Medicine, Sapporo 060-8638, Japan
- Hokkaido University, Institute of Vaccine Research and Development, Sapporo 060-8638, Japan
- Department of Microbial Pathogenesis and Immunology, Texas A&M Health Science Center, Bryan, TX 77807
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Hibino S, Eto S, Hangai S, Endo K, Ashitani S, Sugaya M, Osawa T, Soga T, Taniguchi T, Yanai H. Tumor cell-derived spermidine is an oncometabolite that suppresses TCR clustering for intratumoral CD8 + T cell activation. Proc Natl Acad Sci U S A 2023; 120:e2305245120. [PMID: 37276392 PMCID: PMC10268234 DOI: 10.1073/pnas.2305245120] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 05/03/2023] [Indexed: 06/07/2023] Open
Abstract
The activation and expansion of T cells that recognize cancer cells is an essential aspect to antitumor immunity. Tumors may escape destruction by the immune system through ectopic expression of inhibitory immune ligands typically exemplified by the PD-L1/PD-1 pathway. Here, we reveal another facet of tumor evasion from T cell surveillance. By secretome profiling of necrotic tumor cells, we identified an oncometabolite spermidine as a unique inhibitor of T cell receptor (TCR) signaling. Mechanistically, spermidine causes the downregulation of the plasma membrane cholesterol levels, resulting in the suppression of TCR clustering. Using syngeneic mouse models, we show that spermidine is abundantly detected in the tumor immune microenvironment (TIME) and that administration of the polyamine synthesis inhibitor effectively enhanced CD8+ T cell-dependent antitumor responses. Further, the combination of the polyamine synthesis inhibitor with anti-PD-1 immune checkpoint antibody resulted in a much stronger antitumor immune response. This study reveals an aspect of immunosuppressive TIME, wherein spermidine functions as a metabolic T cell checkpoint that may offer a unique approach for promoting tumor immunotherapy.
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Affiliation(s)
- Sana Hibino
- Department of Inflammology, Research Center for Advanced Science and Technology, The University of Tokyo, Meguro-ku, Tokyo153-0041, Japan
| | - Shotaro Eto
- Department of Inflammology, Research Center for Advanced Science and Technology, The University of Tokyo, Meguro-ku, Tokyo153-0041, Japan
| | - Sho Hangai
- Department of Inflammology, Research Center for Advanced Science and Technology, The University of Tokyo, Meguro-ku, Tokyo153-0041, Japan
| | - Keiko Endo
- Institute for Advanced Biosciences, Keio University, Yamagata997-0052, Japan
| | - Sanae Ashitani
- Institute for Advanced Biosciences, Keio University, Yamagata997-0052, Japan
| | - Maki Sugaya
- Division of Nutriomics and Oncology, Research Center for Advanced Science and Technology, The University of Tokyo, Meguro-ku, Tokyo153-8904, Japan
| | - Tsuyoshi Osawa
- Division of Nutriomics and Oncology, Research Center for Advanced Science and Technology, The University of Tokyo, Meguro-ku, Tokyo153-8904, Japan
| | - Tomoyoshi Soga
- Institute for Advanced Biosciences, Keio University, Yamagata997-0052, Japan
| | - Tadatsugu Taniguchi
- Department of Inflammology, Research Center for Advanced Science and Technology, The University of Tokyo, Meguro-ku, Tokyo153-0041, Japan
| | - Hideyuki Yanai
- Department of Inflammology, Research Center for Advanced Science and Technology, The University of Tokyo, Meguro-ku, Tokyo153-0041, Japan
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48
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Matsui H, Ito S, Matsui H, Ito J, Gabdulkhaev R, Hirose M, Yamanaka T, Koyama A, Kato T, Tanaka M, Uemura N, Matsui N, Hirokawa S, Yoshihama M, Shimozawa A, Kubo SI, Iwasaki K, Hasegawa M, Takahashi R, Hirai K, Kakita A, Onodera O. Phosphorylation of α-synuclein at T64 results in distinct oligomers and exerts toxicity in models of Parkinson's disease. Proc Natl Acad Sci U S A 2023; 120:e2214652120. [PMID: 37252975 PMCID: PMC10266017 DOI: 10.1073/pnas.2214652120] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 04/16/2023] [Indexed: 06/01/2023] Open
Abstract
α-Synuclein accumulates in Lewy bodies, and this accumulation is a pathological hallmark of Parkinson's disease (PD). Previous studies have indicated a causal role of α-synuclein in the pathogenesis of PD. However, the molecular and cellular mechanisms of α-synuclein toxicity remain elusive. Here, we describe a novel phosphorylation site of α-synuclein at T64 and the detailed characteristics of this post-translational modification. T64 phosphorylation was enhanced in both PD models and human PD brains. T64D phosphomimetic mutation led to distinct oligomer formation, and the structure of the oligomer was similar to that of α-synuclein oligomer with A53T mutation. Such phosphomimetic mutation induced mitochondrial dysfunction, lysosomal disorder, and cell death in cells and neurodegeneration in vivo, indicating a pathogenic role of α-synuclein phosphorylation at T64 in PD.
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Affiliation(s)
- Hideaki Matsui
- Department of Neuroscience of Disease, Center for Transdisciplinary Research, Niigata University, Niigata951-8585, Japan
- Department of Neuroscience of Disease, Brain Research Institute, Niigata University, Niigata951-8585, Japan
| | - Shinji Ito
- Medical Research Support Center, Graduate School of Medicine, Kyoto University, Kyoto606-8501, Japan
| | - Hideki Matsui
- Neuroscience Drug Discovery Unit, Research, Takeda Pharmaceutical Company Limited, Fujisawa251-8555, Japan
| | - Junko Ito
- Department of Pathology, Brain Research Institute, Niigata University, Niigata951-8585, Japan
| | - Ramil Gabdulkhaev
- Department of Pathology, Brain Research Institute, Niigata University, Niigata951-8585, Japan
| | - Mika Hirose
- Institute for Protein Research, Osaka University, Suita, Osaka565-0871, Japan
| | - Tomoyuki Yamanaka
- Department of Neuroscience of Disease, Brain Research Institute, Niigata University, Niigata951-8585, Japan
| | - Akihide Koyama
- Department of Legal Medicine, Niigata University Graduate School of Medical and Dental Science, Niigata951-8585, Japan
| | - Taisuke Kato
- Department of System Pathology for Neurological Disorders, Brain Science Branch, Brain Research Institute, Niigata University, Niigata951-8585, Japan
| | - Maiko Tanaka
- Neuroscience Drug Discovery Unit, Research, Takeda Pharmaceutical Company Limited, Fujisawa251-8555, Japan
| | - Norihito Uemura
- Department of Neurology, Kyoto University Graduate School of Medicine, Kyoto University, Kyoto606-8507, Japan
| | - Noriko Matsui
- Department of Neuroscience of Disease, Center for Transdisciplinary Research, Niigata University, Niigata951-8585, Japan
- Department of Neuroscience of Disease, Brain Research Institute, Niigata University, Niigata951-8585, Japan
| | - Sachiko Hirokawa
- Department of Neurology, Clinical Neuroscience Branch, Brain Research Institute, Niigata University, Niigata951-8585, Japan
| | - Maki Yoshihama
- Frontier Science Research Center, University of Miyazaki, Miyazaki889-1692, Japan
| | - Aki Shimozawa
- Dementia Research Project, Tokyo Metropolitan Institute of Medical Science, Tokyo156-8506, Japan
| | - Shin-ichiro Kubo
- Neuroscience Drug Discovery Unit, Research, Takeda Pharmaceutical Company Limited, Fujisawa251-8555, Japan
- Department of Neurology, Parkinson's Disease Center, Eisei Hospital, Tokyo193-0942, Japan
| | - Kenji Iwasaki
- Institute for Protein Research, Osaka University, Suita, Osaka565-0871, Japan
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance, University of Tsukuba, Tsukuba305-8577, Japan
| | - Masato Hasegawa
- Dementia Research Project, Tokyo Metropolitan Institute of Medical Science, Tokyo156-8506, Japan
| | - Ryosuke Takahashi
- Department of Neurology, Kyoto University Graduate School of Medicine, Kyoto University, Kyoto606-8507, Japan
| | - Keisuke Hirai
- Neuroscience Drug Discovery Unit, Research, Takeda Pharmaceutical Company Limited, Fujisawa251-8555, Japan
| | - Akiyoshi Kakita
- Department of Pathology, Brain Research Institute, Niigata University, Niigata951-8585, Japan
| | - Osamu Onodera
- Department of Neurology, Clinical Neuroscience Branch, Brain Research Institute, Niigata University, Niigata951-8585, Japan
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Tsuji S, Brace CS, Yao R, Tanie Y, Tada H, Rensing N, Mizuno S, Almunia J, Kong Y, Nakamura K, Furukawa T, Ogiso N, Toyokuni S, Takahashi S, Wong M, Imai SI, Satoh A. Sleep-wake patterns are altered with age, Prdm13 signaling in the DMH, and diet restriction in mice. Life Sci Alliance 2023; 6:e202301992. [PMID: 37045472 PMCID: PMC10105329 DOI: 10.26508/lsa.202301992] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/17/2023] [Accepted: 03/17/2023] [Indexed: 04/14/2023] Open
Abstract
Old animals display significant alterations in sleep-wake patterns such as increases in sleep fragmentation and sleep propensity. Here, we demonstrated that PR-domain containing protein 13 (Prdm13)+ neurons in the dorsomedial hypothalamus (DMH) are activated during sleep deprivation (SD) in young mice but not in old mice. Chemogenetic inhibition of Prdm13+ neurons in the DMH in young mice promotes increase in sleep attempts during SD, suggesting its involvement in sleep control. Furthermore, DMH-specific Prdm13-knockout (DMH-Prdm13-KO) mice recapitulated age-associated sleep alterations such as sleep fragmentation and increased sleep attempts during SD. These phenotypes were further exacerbated during aging, with increased adiposity and decreased physical activity, resulting in shortened lifespan. Dietary restriction (DR), a well-known anti-aging intervention in diverse organisms, ameliorated age-associated sleep fragmentation and increased sleep attempts during SD, whereas these effects of DR were abrogated in DMH-Prdm13-KO mice. Moreover, overexpression of Prdm13 in the DMH ameliorated increased sleep attempts during SD in old mice. Therefore, maintaining Prdm13 signaling in the DMH might play an important role to control sleep-wake patterns during aging.
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Affiliation(s)
- Shogo Tsuji
- Department of Integrative Physiology, National Center for Geriatrics and Gerontology (NCGG), Obu, Japan
| | - Cynthia S Brace
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO, USA
| | - Ruiqing Yao
- Department of Integrative Physiology, National Center for Geriatrics and Gerontology (NCGG), Obu, Japan
| | - Yoshitaka Tanie
- Department of Integrative Physiology, National Center for Geriatrics and Gerontology (NCGG), Obu, Japan
| | - Hirobumi Tada
- Department of Integrative Physiology, National Center for Geriatrics and Gerontology (NCGG), Obu, Japan
- Department of Nutrition, Faculty of Wellness, Shigakkan University, Obu, Japan
- Department of Physiology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Nicholas Rensing
- Department of Neurology, Washington University School of Medicine, St. Louis, MO, USA
| | - Seiya Mizuno
- Laboratory Animal Resource Center, University of Tsukuba, Tsukuba, Japan
| | - Julio Almunia
- Laboratory of Experimental Animals, NCGG, Obu, Japan
| | - Yingyi Kong
- Department of Pathology and Biological Responses, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kazuhiro Nakamura
- Department of Integrative Physiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Takahisa Furukawa
- Laboratories for Molecular and Developmental Biology, Institute for Protein Research, Osaka University, Osaka, Japan
| | - Noboru Ogiso
- Laboratory of Experimental Animals, NCGG, Obu, Japan
| | - Shinya Toyokuni
- Department of Pathology and Biological Responses, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Satoru Takahashi
- Laboratory Animal Resource Center, University of Tsukuba, Tsukuba, Japan
| | - Michael Wong
- Department of Neurology, Washington University School of Medicine, St. Louis, MO, USA
| | - Shin-Ichiro Imai
- Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO, USA
- Department of Gerontology, Laboratory of Molecular Life Science, Institute of Biomedical Research and Innovation, Kobe, Japan
| | - Akiko Satoh
- Department of Integrative Physiology, National Center for Geriatrics and Gerontology (NCGG), Obu, Japan
- Department of Integrative Physiology, Institute of Development, Aging, and Cancer, Tohoku University, Sendai, Japan
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50
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Takemoto R, Hirai Y, Watanabe S, Harada H, Suzuki T, Hashiguchi T, Yanagi Y, Shirogane Y. Interaction of the Hemagglutinin Stalk Region with Cell Adhesion Molecule (CADM) 1 and CADM2 Mediates the Spread between Neurons and Neuropathogenicity of Measles Virus with a Hyperfusogenic Fusion Protein. J Virol 2023; 97:e0034023. [PMID: 37166307 PMCID: PMC10231178 DOI: 10.1128/jvi.00340-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 04/19/2023] [Indexed: 05/12/2023] Open
Abstract
Measles virus (MeV), the causative agent of measles, is an enveloped RNA virus of the family Paramyxoviridae, which remains an important cause of childhood morbidity and mortality. MeV has two envelope glycoproteins, the hemagglutinin (H) and fusion (F) proteins. During viral entry or virus-mediated fusion between infected cells and neighboring susceptible cells, the head domain of the H protein initially binds to its receptors, signaling lymphocytic activation molecule family member 1 (SLAM) and nectin-4, and then the stalk region of the H protein transmits the fusion-triggering signal to the F protein. MeV may persist in the human brain and cause a fatal neurodegenerative disease, subacute sclerosing panencephalitis (SSPE). Recently, we showed, using in vitro cell culture, that cell adhesion molecule (CADM) 1 and CADM2 are host factors that trigger hyperfusogenic mutant F proteins, causing cell-to-cell fusion and the transfer of the MeV genome between neurons. Unlike conventional receptors, CADM1 and CADM2 interact in cis (on the same membrane) with the H protein and then trigger membrane fusion. Here, we show that alanine substitutions in part of the stalk region (positions 171-175) abolish the ability of the H protein to mediate membrane fusion triggered by CADM1 and CADM2, but not by SLAM. The recombinant hyperfusogenic MeV carrying this mutant H protein loses its ability to spread in primary mouse neurons as well as its neurovirulence in experimentally infected suckling hamsters. These results indicate that CADM1 and CADM2 are key molecules for MeV propagation in the brain and its neurovirulence in vivo. IMPORTANCE Measles is an acute febrile illness with skin rash. Despite the availability of highly effective vaccines, measles is still an important cause of childhood morbidity and mortality in many countries. The World Health Organization estimates that more than 120,000 people died from measles worldwide in 2021. Measles virus (MeV), the causative agent of measles, can also cause a fatal progressive neurological disorder, subacute sclerosing panencephalitis (SSPE), several years after acute infection. There is currently no effective treatment for this disease. In this study, using recombinant MeVs with altered receptor usage patterns, we show that cell adhesion molecule (CADM) 1 and CADM2 are host factors critical for MeV spread in neurons and its neurovirulence. These findings further our understanding of the molecular mechanism of MeV neuropathogenicity.
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Affiliation(s)
- Ryuichi Takemoto
- Department of Virology, Faculty of Medicine, Kyushu University, Fukuoka, Japan
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yuichi Hirai
- Department of Virology, Faculty of Medicine, Kyushu University, Fukuoka, Japan
| | - Shumpei Watanabe
- Department of Microbiology, Faculty of Veterinary Medicine, Okayama University of Science, Ehime, Japan
| | - Hidetaka Harada
- Department of Virology, Faculty of Medicine, Kyushu University, Fukuoka, Japan
| | - Tateki Suzuki
- Laboratory of Medical Virology, Institute for Life and Medical Sciences, Kyoto University
| | - Takao Hashiguchi
- Laboratory of Medical Virology, Institute for Life and Medical Sciences, Kyoto University
| | - Yusuke Yanagi
- National Research Center for the Control and Prevention of Infectious Diseases, Nagasaki University, Nagasaki, Japan
| | - Yuta Shirogane
- Department of Virology, Faculty of Medicine, Kyushu University, Fukuoka, Japan
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