1
|
Al-Ansari M, Fitzsimons T, Wei W, Goldberg MW, Kunieda T, Quinlan RA. The major inducible small heat shock protein HSP20-3 in the tardigrade Ramazzottius varieornatus forms filament-like structures and is an active chaperone. Cell Stress Chaperones 2024; 29:51-65. [PMID: 38330543 PMCID: PMC10939073 DOI: 10.1016/j.cstres.2023.12.001] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 12/03/2023] [Indexed: 02/10/2024] Open
Abstract
The tardigrade Ramazzottius varieornatus has remarkable resilience to a range of environmental stresses. In this study, we have characterised two members of the small heat shock protein (sHSP) family in R. varieornatus, HSP20-3 and HSP20-6. These are the most highly upregulated sHSPs in response to a 24 h heat shock at 35 0C of adult tardigrades with HSP20-3 being one of the most highly upregulated gene in the whole transcriptome. Both R. varieornatus sHSPs and the human sHSP, CRYAB (HSPB5), were produced recombinantly for comparative structure-function studies. HSP20-3 exhibited a superior chaperone activity than human CRYAB in a heat-induced protein aggregation assay. Both tardigrade sHSPs also formed larger oligomers than CRYAB as assessed by size exclusion chromatography and transmission electron microscopy of negatively stained samples. Whilst both HSP20-3 and HSP20-6 formed particles that were variable in size and larger than the particles formed by CRYAB, only HSP20-3 formed filament-like structures. The particles and filament-like structures formed by HSP20-3 appear inter-related as the filament-like structures often had particles located at their ends. Sequence analyses identified two unique features; an insertion in the middle region of the N-terminal domain (NTD) and preceding the critical-sequence identified in CRYAB, as well as a repeated QNTN-motif located in the C-terminal domain of HSP20-3. The NTD insertion is expected to affect protein-protein interactions and subunit oligomerisation. Removal of the repeated QNTN-motif abolished HSP20-3 chaperone activity and also affected the assembly of the filament-like structures. We discuss the potential contribution of HSP20-3 to protein condensate formation.
Collapse
Affiliation(s)
- Mohammad Al-Ansari
- Department of Biosciences, Upper Mountjoy Science Site, University of Durham, Durham DH1 3LE, UK; Department of Biochemistry, Health Sciences Centre, Kuwait University, Kuwait
| | - Taylor Fitzsimons
- Department of Biosciences, Upper Mountjoy Science Site, University of Durham, Durham DH1 3LE, UK
| | - Wenbin Wei
- Department of Biosciences, Upper Mountjoy Science Site, University of Durham, Durham DH1 3LE, UK.
| | - Martin W Goldberg
- Department of Biosciences, Upper Mountjoy Science Site, University of Durham, Durham DH1 3LE, UK
| | - Takekazu Kunieda
- Department of Biological Sciences, The University of Tokyo, Japan
| | - Roy A Quinlan
- Department of Biosciences, Upper Mountjoy Science Site, University of Durham, Durham DH1 3LE, UK; Department of Biological Structure, University of Washington, Seattle, WA 98195, USA.
| |
Collapse
|
2
|
Tanaka A, Kunieda T. Considerations on the TardiVec-based analyses of tissue specificity and desiccation-induced supramolecular structure of target proteins. Proc Natl Acad Sci U S A 2023; 120:e2312563120. [PMID: 37983508 PMCID: PMC10691217 DOI: 10.1073/pnas.2312563120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2023] Open
Affiliation(s)
- Akihiro Tanaka
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo113-0033, Japan
| | - Takekazu Kunieda
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo113-0033, Japan
| |
Collapse
|
3
|
Matsumura Y, To TK, Kunieda T, Kohno H, Kakutani T, Kubo T. Mblk-1/E93, an ecdysone related-transcription factor, targets synaptic plasticity-related genes in the honey bee mushroom bodies. Sci Rep 2022; 12:21367. [PMID: 36494426 PMCID: PMC9734179 DOI: 10.1038/s41598-022-23329-z] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Accepted: 10/29/2022] [Indexed: 12/13/2022] Open
Abstract
Among hymenopteran insects, aculeate species such as bees, ants, and wasps have enlarged and morphologically elaborate mushroom bodies (MBs), a higher-order brain center in the insect, implying their relationship with the advanced behavioral traits of aculeate species. The molecular bases leading to the acquisition of complicated MB functions, however, remains unclear. We previously reported the constitutive and MB-preferential expression of an ecdysone-signaling related transcription factor, Mblk-1/E93, in the honey bee brain. Here, we searched for target genes of Mblk-1 in the worker honey bee MBs using chromatin immunoprecipitation sequence analyses and found that Mblk-1 targets several genes involved in synaptic plasticity, learning, and memory abilities. We also demonstrated that Mblk-1 expression is self-regulated via Mblk-1-binding sites, which are located upstream of Mblk-1. Furthermore, we showed that the number of the Mblk-1-binding motif located upstream of Mblk-1 homologs increased associated with evolution of hymenopteran insects. Our findings suggest that Mblk-1, which has been focused on as a developmental gene transiently induced by ecdysone, has acquired a novel expression pattern to play a role in synaptic plasticity in honey bee MBs, raising a possibility that molecular evolution of Mblk-1 may have partly contributed to the elaboration of MB function in insects.
Collapse
Affiliation(s)
- Yasuhiro Matsumura
- grid.26999.3d0000 0001 2151 536XDepartment of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Taiko Kim To
- grid.26999.3d0000 0001 2151 536XDepartment of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Takekazu Kunieda
- grid.26999.3d0000 0001 2151 536XDepartment of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Hiroki Kohno
- grid.26999.3d0000 0001 2151 536XDepartment of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Tetsuji Kakutani
- grid.26999.3d0000 0001 2151 536XDepartment of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Takeo Kubo
- grid.26999.3d0000 0001 2151 536XDepartment of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| |
Collapse
|
4
|
Tobe A, Tanaka A, Furusawa K, Shirai Y, Funakubo H, Otsuka S, Kubota Y, Kunieda T, Yoshioka N, Sato S, Kudo N, Ishii H, Murohara T. Heterogeneous carotid plaque is associated with cardiovascular events after percutaneous coronary intervention. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
The relationship between carotid artery ultrasound findings and clinical outcomes in percutaneous coronary intervention (PCI) patients has not been fully elucidated.
Purpose
To investigate the relationship between carotid artery ultrasound findings and cardiovascular risks in PCI patients.
Methods
This was a single-center retrospective study investigating 691 patients who underwent PCI and carotid ultrasound testing. Maximum carotid intima-media thickness (CIMT) was defined as the greatest CIMT at the maximally thick point among the common carotid artery, carotid bulb, and internal carotid artery. A carotid plaque was defined as vessel wall thickening with a CIMT ≥1.5 mm. The characteristics of carotid plaque (heterogeneity, calcification, or irregular/ulcerated surface) were evaluated visually. Patients were divided into those with and without heterogeneous carotid plaque (maximum CIMT ≥1.5 mm and heterogeneous texture). The endpoint was the incidence of a major adverse cardiovascular event (MACE) defined as a composite of cardiovascular death, myocardial infarction, and ischemic stroke.
Results
Among 691 patients, 312 were categorized as having a heterogeneous plaque. Patients with heterogeneous plaques were at a higher risk of MACE than those without (p=0.002). A heterogeneous plaque was independently associated with MACE after adjusting for covariates (hazard ratio [HR], 1.80; 95% confidence interval [CI], 1.06–3.04; p=0.03). Calcified or irregular/ulcerated plaques were correlated with a higher incidence of MACE but both were not independently associated with MACE (HR, 1.37; 95% CI, 0.70–2.67, p=0.36 and HR, 1.13; 95% CI, 0.66–1.93; p=0.66, respectively).
Conclusions
The presence of a heterogeneous carotid plaque in patients who underwent PCI predicted future cardiovascular events. These patients may require more aggressive medical therapy and careful follow-up.
Funding Acknowledgement
Type of funding sources: None.
Collapse
Affiliation(s)
- A Tobe
- Nagoya University Hospital, Cardiology , Aichi , Japan
| | - A Tanaka
- Nagoya University Hospital, Cardiology , Aichi , Japan
| | - K Furusawa
- Nagoya University Hospital, Cardiology , Aichi , Japan
| | - Y Shirai
- Nagoya University Hospital, Cardiology , Aichi , Japan
| | - H Funakubo
- Nagoya University Hospital, Cardiology , Aichi , Japan
| | - S Otsuka
- Nagoya University Hospital, Cardiology , Aichi , Japan
| | - Y Kubota
- Nagoya University Hospital, Cardiology , Aichi , Japan
| | - T Kunieda
- Nagoya University Hospital, Cardiology , Aichi , Japan
| | - N Yoshioka
- Nagoya University Hospital, Cardiology , Aichi , Japan
| | - S Sato
- Nagoya University Hospital, Cardiology , Aichi , Japan
| | - N Kudo
- Handa City Hospital, Cardiology , Handa , Japan
| | - H Ishii
- Gunma University Graduate School of Medicine, Cardiology , Maebashi , Japan
| | - T Murohara
- Nagoya University Hospital, Cardiology , Aichi , Japan
| |
Collapse
|
5
|
Kumagai H, Kondo K, Kunieda T. Application of CRISPR/Cas9 system and the preferred no-indel end-joining repair in tardigrades. Biochem Biophys Res Commun 2022; 623:196-201. [PMID: 35926276 DOI: 10.1016/j.bbrc.2022.07.060] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Accepted: 07/15/2022] [Indexed: 12/20/2022]
Abstract
Tardigrades are small aquatic animals known for the tolerant ability against various extreme stresses. Recent studies identified several tardigrade-unique proteins as protective factors of biomolecules from extreme stresses. Due to the limitation of the technique available in tardigrades, the function of these protective molecules has largely been studied utilizing the systems of in vitro and the heterologous expression in other organisms. Although RNAi is feasible in tardigrades, their effects are variable and not always sufficient. To analyze the functions of the tardigrade protective proteins, in vivo genetic manipulations have been desired. In this study, we used a tardigrade Hypsibius exemplaris as a model whose genome is available, and developed the delivery method of Cas9 ribonucleoproteins (RNPs) to adult tardigrade cells. Cas9 RNPs containing two kinds of crRNAs were injected to the body cavity of adult tardigrades and subjected to the subsequent electroporation to facilitate the incorporation of RNPs to the cells. Using this delivery method, we detected the deletion of the intervening region between two crRNAs from the genome. Intriguingly, all examined joining sites exhibited no incorporation of insertions/deletions (indels), suggesting that no-indel end-joining is dominant repair system in this tardigrade. We also detected similar removal of the intervening region even in the tardigrades injected with Cas9 RNPs without electroporation and in this case the no-indel end-joining is detected in still dominant but not all examined joining sites. This study provides the development of the delivery method of Cas9 RNPs to tardigrade cells and our data also suggested that simultaneous application of more than two crRNAs/gRNAs are recommended to disrupt the target gene by CRISPR/Cas9 system to avoid scarless repair in the tardigrade.
Collapse
Affiliation(s)
- Hitomi Kumagai
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Koyuki Kondo
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Takekazu Kunieda
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
| |
Collapse
|
6
|
Tanaka A, Nakano T, Watanabe K, Masuda K, Honda G, Kamata S, Yasui R, Kozuka-Hata H, Watanabe C, Chinen T, Kitagawa D, Sawai S, Oyama M, Yanagisawa M, Kunieda T. Stress-dependent cell stiffening by tardigrade tolerance proteins that reversibly form a filamentous network and gel. PLoS Biol 2022; 20:e3001780. [PMID: 36067153 PMCID: PMC9592077 DOI: 10.1371/journal.pbio.3001780] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Accepted: 08/02/2022] [Indexed: 12/30/2022] Open
Abstract
Tardigrades are able to tolerate almost complete dehydration by entering a reversible ametabolic state called anhydrobiosis and resume their animation upon rehydration. Dehydrated tardigrades are exceptionally stable and withstand various physical extremes. Although trehalose and late embryogenesis abundant (LEA) proteins have been extensively studied as potent protectants against dehydration in other anhydrobiotic organisms, tardigrades produce high amounts of tardigrade-unique protective proteins. Cytoplasmic-abundant heat-soluble (CAHS) proteins are uniquely invented in the lineage of eutardigrades, a major class of the phylum Tardigrada and are essential for their anhydrobiotic survival. However, the precise mechanisms of their action in this protective role are not fully understood. In the present study, we first postulated the presence of tolerance proteins that form protective condensates via phase separation in a stress-dependent manner and searched for tardigrade proteins that reversibly form condensates upon dehydration-like stress. Through a comprehensive search using a desolvating agent, trifluoroethanol (TFE), we identified 336 proteins, collectively dubbed "TFE-Dependent ReversiblY condensing Proteins (T-DRYPs)." Unexpectedly, we rediscovered CAHS proteins as highly enriched in T-DRYPs, 3 of which were major components of T-DRYPs. We revealed that these CAHS proteins reversibly polymerize into many cytoskeleton-like filaments depending on hyperosmotic stress in cultured cells and undergo reversible gel-transition in vitro. Furthermore, CAHS proteins increased cell stiffness in a hyperosmotic stress-dependent manner and counteract the cell shrinkage caused by osmotic pressure, and even improved the survival against hyperosmotic stress. The conserved putative helical C-terminal region is necessary and sufficient for filament formation by CAHS proteins, and mutations disrupting the secondary structure of this region impaired both the filament formation and the gel transition. On the basis of these results, we propose that CAHS proteins are novel cytoskeleton-like proteins that form filamentous networks and undergo gel-transition in a stress-dependent manner to provide on-demand physical stabilization of cell integrity against deformative forces during dehydration and could contribute to the exceptional physical stability in a dehydrated state.
Collapse
Affiliation(s)
- Akihiro Tanaka
- Department of Biological Sciences, Graduate School of Science, The
University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Tomomi Nakano
- Department of Biological Sciences, Graduate School of Science, The
University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Kento Watanabe
- Department of Biological Sciences, Graduate School of Science, The
University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Kazutoshi Masuda
- Komaba Institute for Science, Graduate School of Arts and Sciences, The
University of Tokyo, Meguro-ku, Tokyo, Japan
- Department of Basic Science, Graduate School of Arts and Sciences, The
University of Tokyo, Meguro-ku, Tokyo, Japan
| | - Gen Honda
- Komaba Institute for Science, Graduate School of Arts and Sciences, The
University of Tokyo, Meguro-ku, Tokyo, Japan
- Department of Basic Science, Graduate School of Arts and Sciences, The
University of Tokyo, Meguro-ku, Tokyo, Japan
| | - Shuichi Kamata
- Department of Biological Sciences, Graduate School of Science, The
University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Reitaro Yasui
- Department of Biological Sciences, Graduate School of Science, The
University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Hiroko Kozuka-Hata
- Medical Proteomics Laboratory, The Institute of Medical Science, The
University of Tokyo, Minato-ku, Tokyo, Japan
| | - Chiho Watanabe
- Komaba Institute for Science, Graduate School of Arts and Sciences, The
University of Tokyo, Meguro-ku, Tokyo, Japan
- Department of Basic Science, Graduate School of Arts and Sciences, The
University of Tokyo, Meguro-ku, Tokyo, Japan
| | - Takumi Chinen
- Department of Physiological Chemistry, Graduate School of Pharmaceutical
Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Daiju Kitagawa
- Department of Physiological Chemistry, Graduate School of Pharmaceutical
Sciences, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Satoshi Sawai
- Department of Biological Sciences, Graduate School of Science, The
University of Tokyo, Bunkyo-ku, Tokyo, Japan
- Department of Basic Science, Graduate School of Arts and Sciences, The
University of Tokyo, Meguro-ku, Tokyo, Japan
| | - Masaaki Oyama
- Medical Proteomics Laboratory, The Institute of Medical Science, The
University of Tokyo, Minato-ku, Tokyo, Japan
| | - Miho Yanagisawa
- Komaba Institute for Science, Graduate School of Arts and Sciences, The
University of Tokyo, Meguro-ku, Tokyo, Japan
- Department of Basic Science, Graduate School of Arts and Sciences, The
University of Tokyo, Meguro-ku, Tokyo, Japan
| | - Takekazu Kunieda
- Department of Biological Sciences, Graduate School of Science, The
University of Tokyo, Bunkyo-ku, Tokyo, Japan
- * E-mail:
| |
Collapse
|
7
|
Hashimoto T, Kunieda T, Honda T, Scalzo F, Ali L, Hinman J, Rao N, Nour M, Bahr-Hosseini M, Saver J, Raychev R, Liebeskind D. Reduced Leukoaraiosis, Noncardiac Embolic Stroke Etiology, and Shorter Thrombus Length Indicate Good Leptomeningeal Collateral Flow in Embolic Large-Vessel Occlusion. AJNR Am J Neuroradiol 2022; 43:63-69. [PMID: 34794948 PMCID: PMC8757540 DOI: 10.3174/ajnr.a7360] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 09/20/2021] [Indexed: 01/03/2023]
Abstract
BACKGROUND AND PURPOSE Acute leptomeningeal collateral flow is vital for maintaining perfusion to penumbral tissue in acute ischemic stroke caused by large-vessel occlusion. In this study, we aimed to investigate the clinically available indicators of leptomeningeal collateral variability in embolic large-vessel occlusion. MATERIALS AND METHODS Among prospectively registered consecutive patients with acute embolic anterior circulation large-vessel occlusion treated with thrombectomy, we analyzed 108 patients admitted from January 2015 to December 2019 who underwent evaluation of leptomeningeal collateral status on pretreatment CTA. Clinical characteristics, extent of leukoaraiosis on MR imaging, embolic stroke subtype, time of imaging, occlusive thrombus characteristics, presenting stroke severity, and clinical outcome were collected. The clinical indicators of good collateral status (>50% collateral filling of the occluded territory) were analyzed using multivariate logistic regression analysis. RESULTS Good collateral status was present in 67 patients (62%) and associated with independent functional outcomes at 3 months. Reduced leukoaraiosis (total Fazekas score, 0-2) was positively related to good collateral status (OR, 9.57; 95% CI, 2.49-47.75), while the cardioembolic stroke mechanism was inversely related to good collateral status (OR, 0.17; 95% CI, 0.02-0.87). In 82 patients with cardioembolic stroke, shorter thrombus length (OR, 0.91 per millimeter increase; 95% CI, 0.82-0.99) and reduced leukoaraiosis (OR, 5.79; 95% CI, 1.40-29.61) were independently related to good collateral status. CONCLUSIONS Among patients with embolic large-vessel occlusion, reduced leukoaraiosis, noncardiac embolism mechanisms including embolisms of arterial or undetermined origin, and shorter thrombus length in cardioembolism are indicators of good collateral flow.
Collapse
Affiliation(s)
- T. Hashimoto
- From the Department of Neurology and Comprehensive Stroke Center, University of California, Los Angeles, Los Angeles, California
| | - T. Kunieda
- From the Department of Neurology and Comprehensive Stroke Center, University of California, Los Angeles, Los Angeles, California
| | - T. Honda
- From the Department of Neurology and Comprehensive Stroke Center, University of California, Los Angeles, Los Angeles, California
| | - F. Scalzo
- From the Department of Neurology and Comprehensive Stroke Center, University of California, Los Angeles, Los Angeles, California
| | - L. Ali
- From the Department of Neurology and Comprehensive Stroke Center, University of California, Los Angeles, Los Angeles, California
| | - J.D. Hinman
- From the Department of Neurology and Comprehensive Stroke Center, University of California, Los Angeles, Los Angeles, California
| | - N.M. Rao
- From the Department of Neurology and Comprehensive Stroke Center, University of California, Los Angeles, Los Angeles, California
| | - M. Nour
- From the Department of Neurology and Comprehensive Stroke Center, University of California, Los Angeles, Los Angeles, California
| | - M. Bahr-Hosseini
- From the Department of Neurology and Comprehensive Stroke Center, University of California, Los Angeles, Los Angeles, California
| | - J.L. Saver
- From the Department of Neurology and Comprehensive Stroke Center, University of California, Los Angeles, Los Angeles, California
| | - R. Raychev
- From the Department of Neurology and Comprehensive Stroke Center, University of California, Los Angeles, Los Angeles, California
| | - D. Liebeskind
- From the Department of Neurology and Comprehensive Stroke Center, University of California, Los Angeles, Los Angeles, California
| |
Collapse
|
8
|
Hara Y, Shibahara R, Kondo K, Abe W, Kunieda T. Parallel evolution of trehalose production machinery in anhydrobiotic animals via recurrent gene loss and horizontal transfer. Open Biol 2021; 11:200413. [PMID: 34255978 PMCID: PMC8277472 DOI: 10.1098/rsob.200413] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Trehalose is a versatile non-reducing sugar. In some animal groups possessing its intrinsic production machinery, it is used as a potent protectant against environmental stresses, as well as blood sugar. However, the trehalose biosynthesis genes remain unidentified in the large majority of metazoan phyla, including vertebrates. To uncover the evolutionary history of trehalose production machinery in metazoans, we scrutinized the available genome resources and identified bifunctional trehalose-6-phosphate synthase-trehalose-6-phosphate phosphatase (TPS–TPP) genes in various taxa. The scan included our newly sequenced genome assembly of a desiccation-tolerant tardigrade Paramacrobiotus sp. TYO, revealing that this species retains TPS–TPP genes activated upon desiccation. Phylogenetic analyses identified a monophyletic group of the many of the metazoan TPS–TPP genes, namely ‘pan-metazoan’ genes, that were acquired in the early ancestors of metazoans. Furthermore, coordination of our results with the previous horizontal gene transfer studies illuminated that the two tardigrade lineages, nematodes and bdelloid rotifers, all of which include desiccation-tolerant species, independently acquired the TPS–TPP homologues via horizontal transfer accompanied with loss of the ‘pan-metazoan’ genes. Our results indicate that the parallel evolution of trehalose synthesis via recurrent loss and horizontal transfer of the biosynthesis genes resulted in the acquisition and/or augmentation of anhydrobiotic lives in animals.
Collapse
Affiliation(s)
- Yuichiro Hara
- Research Center for Genome and Medical Sciences, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Reira Shibahara
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
| | - Koyuki Kondo
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
| | - Wataru Abe
- Department of Biology, Dokkyo Medical University, Tochigi, Japan
| | - Takekazu Kunieda
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
| |
Collapse
|
9
|
Kumagai H, Kunieda T, Nakamura K, Matsumura Y, Namiki M, Kohno H, Kubo T. Developmental stage-specific distribution and phosphorylation of Mblk-1, a transcription factor involved in ecdysteroid-signaling in the honey bee brain. Sci Rep 2020; 10:8735. [PMID: 32457433 PMCID: PMC7250831 DOI: 10.1038/s41598-020-65327-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 04/28/2020] [Indexed: 01/18/2023] Open
Abstract
In the honey bee, the mushroom bodies (MBs), a higher-order center in insect brain, comprise interneurons termed Kenyon cells (KCs). We previously reported that Mblk-1, which encodes a transcription factor involved in ecdysteroid-signaling, is expressed preferentially in the large-type KCs (lKCs) in the pupal and adult worker brain and that phosphorylation by the Ras/MAPK pathway enhances the transcriptional activity of Mblk-1 in vitro. In the present study, we performed immunoblotting and immunofluorescence studies using affinity-purified anti-Mblk-1 and anti-phosphorylated Mblk-1 antibodies to analyze the distribution and phosphorylation of Mblk-1 in the brains of pupal and adult workers. Mblk-1 was preferentially expressed in the lKCs in both pupal and adult worker brains. In contrast, some Mblk-1 was phosphorylated almost exclusively in the pupal stages, and phosphorylated Mblk-1 was preferentially expressed in the MB neuroblasts and lKCs in pupal brains. Immunofluorescence studies revealed that both Mblk-1 and phosphorylated Mblk-1 are located in both the cytoplasm and nuclei of the lKC somata in the pupal and adult worker brains. These findings suggest that Mblk-1 plays a role in the lKCs in both pupal and adult stages and that phosphorylated Mblk-1 has pupal stage-specific functions in the MB neuroblasts and lKCs in the honey bee brain.
Collapse
Affiliation(s)
- Hitomi Kumagai
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Takekazu Kunieda
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Korefumi Nakamura
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Yasuhiro Matsumura
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Manami Namiki
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Hiroki Kohno
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Takeo Kubo
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, 113-0033, Japan.
| |
Collapse
|
10
|
Furukawa S, Nagamatsu A, Nenoi M, Fujimori A, Kakinuma S, Katsube T, Wang B, Tsuruoka C, Shirai T, Nakamura AJ, Sakaue-Sawano A, Miyawaki A, Harada H, Kobayashi M, Kobayashi J, Kunieda T, Funayama T, Suzuki M, Miyamoto T, Hidema J, Yoshida Y, Takahashi A. Space Radiation Biology for "Living in Space". Biomed Res Int 2020; 2020:4703286. [PMID: 32337251 PMCID: PMC7168699 DOI: 10.1155/2020/4703286] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 03/13/2020] [Indexed: 12/16/2022]
Abstract
Space travel has advanced significantly over the last six decades with astronauts spending up to 6 months at the International Space Station. Nonetheless, the living environment while in outer space is extremely challenging to astronauts. In particular, exposure to space radiation represents a serious potential long-term threat to the health of astronauts because the amount of radiation exposure accumulates during their time in space. Therefore, health risks associated with exposure to space radiation are an important topic in space travel, and characterizing space radiation in detail is essential for improving the safety of space missions. In the first part of this review, we provide an overview of the space radiation environment and briefly present current and future endeavors that monitor different space radiation environments. We then present research evaluating adverse biological effects caused by exposure to various space radiation environments and how these can be reduced. We especially consider the deleterious effects on cellular DNA and how cells activate DNA repair mechanisms. The latest technologies being developed, e.g., a fluorescent ubiquitination-based cell cycle indicator, to measure real-time cell cycle progression and DNA damage caused by exposure to ultraviolet radiation are presented. Progress in examining the combined effects of microgravity and radiation to animals and plants are summarized, and our current understanding of the relationship between psychological stress and radiation is presented. Finally, we provide details about protective agents and the study of organisms that are highly resistant to radiation and how their biological mechanisms may aid developing novel technologies that alleviate biological damage caused by radiation. Future research that furthers our understanding of the effects of space radiation on human health will facilitate risk-mitigating strategies to enable long-term space and planetary exploration.
Collapse
Affiliation(s)
- Satoshi Furukawa
- Japan Aerospace Exploration Agency, 2-1-1 Sengen, Tsukuba, Ibaraki 305-8505, Japan
| | - Aiko Nagamatsu
- Japan Aerospace Exploration Agency, 2-1-1 Sengen, Tsukuba, Ibaraki 305-8505, Japan
| | - Mitsuru Nenoi
- National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - Akira Fujimori
- National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - Shizuko Kakinuma
- National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - Takanori Katsube
- National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - Bing Wang
- National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - Chizuru Tsuruoka
- National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - Toshiyuki Shirai
- National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - Asako J. Nakamura
- Department of Biological Sciences, College of Science, Ibaraki University, 2-1-1, Bunkyo, Mito, Ibaraki 310-8512, Japan
| | - Asako Sakaue-Sawano
- Lab for Cell Function and Dynamics, CBS, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Atsushi Miyawaki
- Lab for Cell Function and Dynamics, CBS, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Hiroshi Harada
- Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Minoru Kobayashi
- Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Junya Kobayashi
- Radiation Biology Center, Graduate School of Biostudies, Kyoto University, Yoshida Konoe-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Takekazu Kunieda
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Tomoo Funayama
- Takasaki Advanced Radiation Research Institute, QST, 1233 Watanuki-machi, Takasaki, Gunma 370-1292, Japan
| | - Michiyo Suzuki
- Takasaki Advanced Radiation Research Institute, QST, 1233 Watanuki-machi, Takasaki, Gunma 370-1292, Japan
| | - Tatsuo Miyamoto
- Research Institute for Radiation Biology and Medicine, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima 734-8553, Japan
| | - Jun Hidema
- Graduate School of Life Sciences, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
- Division for the Establishment of Frontier Sciences of the Organization for Advanced Studies, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Yukari Yoshida
- Gunma University Heavy Ion Medical Center, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
| | - Akihisa Takahashi
- Gunma University Heavy Ion Medical Center, 3-39-22 Showa-machi, Maebashi, Gunma 371-8511, Japan
| |
Collapse
|
11
|
Sugiura K, Minato H, Suzuki AC, Arakawa K, Kunieda T, Matsumoto M. Comparison of Sexual Reproductive Behaviors in Two Species of Macrobiotidae (Tardigrada: Eutardigrada). Zoolog Sci 2019; 36:120-127. [DOI: 10.2108/zs180103] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Accepted: 10/10/2018] [Indexed: 11/17/2022]
Affiliation(s)
- Kenta Sugiura
- School of Fundamental Science and Technology, Graduate School of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama-shi, Kanagawa 223-8522, Japan
| | - Hiroki Minato
- School of Fundamental Science and Technology, Graduate School of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama-shi, Kanagawa 223-8522, Japan
| | - Atsushi C. Suzuki
- Department of Biology, School of Medicine, Keio University, 4-1-1 Hiyoshi, Kohoku-ku, Yokohama-shi, Kanagawa 223-8521, Japan
| | - Kazuharu Arakawa
- Institute for Advanced Biosciences, Keio University, 14-1, Baba-cho, Tsuruoka-shi, Yamagata 997-0035, Japan
| | - Takekazu Kunieda
- Department of Biological Sciences, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Midori Matsumoto
- School of Fundamental Science and Technology, Graduate School of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama-shi, Kanagawa 223-8522, Japan
| |
Collapse
|
12
|
Yoshioka K, Kunieda T, Asami Y, Sujino Y, Tanaka K, Piao W, Kuwahara H, Nishina K, Nagata T, Yokota T. Dual overhanging-duplex oligonucleotide improved efficacy and safety in gene therapy for FAP. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
13
|
Shimotake A, Matsumoto R, Kobayashi K, Kunieda T, Mikuni N, Miyamoto S, Takahashi R, Ikeda A. Functional mapping of praxis: Electrical cortical stimulation study. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
14
|
Takeyama H, Matsumoto R, Usami K, Shimotake A, Kunieda T, Miyamoto S, Takahashi R, Ikeda A. Higher-order motor cortices actively engage in motor inhibition: Cortical stimulation and event-related potentials as an evidence from subdural grid electrodes. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
15
|
Nakatani M, Matsumoto R, Kobayshi K, Hitomi T, Inouchi M, Matsuhashi M, Kinoshita M, Kikuchi T, Yoshida K, Kunieda T, Takahashi R, Hattori N, Ikeda A. Inhibitory effects of electric cortical stimulation on interictal epileptiform discharges in human epileptic focus. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
16
|
Matsumoto R, Kikuchi T, Yoshida K, Kunieda T, Ikeda A. Subdural recording in epilepsy. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
17
|
Murai T, Matsuhashi M, Hitomi T, Kobayashi K, Shimotake A, Inouchi M, Kikuchi T, Yoshida K, Kunieda T, Matsumoto R, Takahashi R, Ikeda A. Invasive 3D source localization by wide-band electroencephalography findings. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
18
|
Neshige S, Matsuhashi M, Sakurai T, Kobayashi K, Shimotake A, Kikuchi T, Yoshida K, Kunieda T, Matsumoto R, Maruyama H, Takahashi R, Ikeda A. Efficacy of wide-band electrocorticography on mapping of the primary seonsory-motor area compared with electrical cortical stimulation. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
19
|
Kobayashi K, Matsumoto R, Usami K, Matsuhashi M, Shimotake A, Nakae T, Takeyama H, Kikuchi T, Yoshida K, Kunieda T, Takahashi R, Ikeda A. Safety of single-pulse electrical stimulation for cortico-cortical evoked potentials in epileptic human cerebral cortex. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
20
|
Miyake K, Kunieda T, Kusaka H, Kaneko S, Tsuge A, Oki M, Sakamoto H, Nakayama K. Correlation between vessel angle and successful recanalization using adapt technique. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
21
|
Kunieda T, Miyake K, Sakamoto H, Iwasaki Y, Fujita K, Nakamura M, Kaneko S, Kusaka H. Leptomeningeal collaterals strongly correlate with reduced CVR measured by acetazolamide-challenged SPECT using a stereotactic extraction estimation analysis in patients with internal carotid artery stenosis. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
22
|
Daifu M, Inouchi M, Matsuhashi M, Kobayashi K, Shimotake A, Hitomi T, Kikuchi T, Yoshida K, Kunieda T, Matsumoto R, Takahashi R, Ikeda A. Co-occurrence of slow and high frequency oscillations (HFOs) in invasively recorded, interictal state in epilepsy patients: Is it a red slow? J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
23
|
Yamane A, Kohno H, Ikeda T, Kaneko K, Ugajin A, Fujita T, Kunieda T, Kubo T. Correction: Gene expression and immunohistochemical analyses of mKast suggest its late pupal and adult-specific functions in the honeybee brain. PLoS One 2017; 12:e0183522. [PMID: 28806743 PMCID: PMC5555685 DOI: 10.1371/journal.pone.0183522] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
|
24
|
Yoshida Y, Koutsovoulos G, Laetsch DR, Stevens L, Kumar S, Horikawa DD, Ishino K, Komine S, Kunieda T, Tomita M, Blaxter M, Arakawa K. Comparative genomics of the tardigrades Hypsibius dujardini and Ramazzottius varieornatus. PLoS Biol 2017; 15:e2002266. [PMID: 28749982 PMCID: PMC5531438 DOI: 10.1371/journal.pbio.2002266] [Citation(s) in RCA: 125] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 06/23/2017] [Indexed: 01/27/2023] Open
Abstract
Tardigrada, a phylum of meiofaunal organisms, have been at the center of discussions of the evolution of Metazoa, the biology of survival in extreme environments, and the role of horizontal gene transfer in animal evolution. Tardigrada are placed as sisters to Arthropoda and Onychophora (velvet worms) in the superphylum Panarthropoda by morphological analyses, but many molecular phylogenies fail to recover this relationship. This tension between molecular and morphological understanding may be very revealing of the mode and patterns of evolution of major groups. Limnoterrestrial tardigrades display extreme cryptobiotic abilities, including anhydrobiosis and cryobiosis, as do bdelloid rotifers, nematodes, and other animals of the water film. These extremophile behaviors challenge understanding of normal, aqueous physiology: how does a multicellular organism avoid lethal cellular collapse in the absence of liquid water? Meiofaunal species have been reported to have elevated levels of horizontal gene transfer (HGT) events, but how important this is in evolution, and particularly in the evolution of extremophile physiology, is unclear. To address these questions, we resequenced and reassembled the genome of H. dujardini, a limnoterrestrial tardigrade that can undergo anhydrobiosis only after extensive pre-exposure to drying conditions, and compared it to the genome of R. varieornatus, a related species with tolerance to rapid desiccation. The 2 species had contrasting gene expression responses to anhydrobiosis, with major transcriptional change in H. dujardini but limited regulation in R. varieornatus. We identified few horizontally transferred genes, but some of these were shown to be involved in entry into anhydrobiosis. Whole-genome molecular phylogenies supported a Tardigrada+Nematoda relationship over Tardigrada+Arthropoda, but rare genomic changes tended to support Tardigrada+Arthropoda.
Collapse
Affiliation(s)
- Yuki Yoshida
- Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata, Japan
- Systems Biology Program, Graduate School of Media and Governance, Keio University, Kanagawa, Japan
| | - Georgios Koutsovoulos
- Institute of Evolutionary Biology, School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom
| | - Dominik R. Laetsch
- Institute of Evolutionary Biology, School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom
- The James Hutton Institute, Dundee, United Kingdom
| | - Lewis Stevens
- Institute of Evolutionary Biology, School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom
| | - Sujai Kumar
- Institute of Evolutionary Biology, School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom
| | - Daiki D. Horikawa
- Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata, Japan
- Systems Biology Program, Graduate School of Media and Governance, Keio University, Kanagawa, Japan
| | - Kyoko Ishino
- Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata, Japan
| | - Shiori Komine
- Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata, Japan
| | - Takekazu Kunieda
- Department of Biological Sciences, Graduate School of Science, University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Masaru Tomita
- Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata, Japan
- Systems Biology Program, Graduate School of Media and Governance, Keio University, Kanagawa, Japan
| | - Mark Blaxter
- Institute of Evolutionary Biology, School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom
| | - Kazuharu Arakawa
- Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata, Japan
- Systems Biology Program, Graduate School of Media and Governance, Keio University, Kanagawa, Japan
| |
Collapse
|
25
|
Hashimoto T, Kunieda T. DNA Protection Protein, a Novel Mechanism of Radiation Tolerance: Lessons from Tardigrades. Life (Basel) 2017; 7:life7020026. [PMID: 28617314 PMCID: PMC5492148 DOI: 10.3390/life7020026] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 06/08/2017] [Accepted: 06/12/2017] [Indexed: 01/19/2023] Open
Abstract
Genomic DNA stores all genetic information and is indispensable for maintenance of normal cellular activity and propagation. Radiation causes severe DNA lesions, including double-strand breaks, and leads to genome instability and even lethality. Regardless of the toxicity of radiation, some organisms exhibit extraordinary tolerance against radiation. These organisms are supposed to possess special mechanisms to mitigate radiation-induced DNA damages. Extensive study using radiotolerant bacteria suggested that effective protection of proteins and enhanced DNA repair system play important roles in tolerability against high-dose radiation. Recent studies using an extremotolerant animal, the tardigrade, provides new evidence that a tardigrade-unique DNA-associating protein, termed Dsup, suppresses the occurrence of DNA breaks by radiation in human-cultured cells. In this review, we provide a brief summary of the current knowledge on extremely radiotolerant animals, and present novel insights from the tardigrade research, which expand our understanding on molecular mechanism of exceptional radio-tolerability.
Collapse
Affiliation(s)
- Takuma Hashimoto
- Laboratory for Radiation Biology, School of Medicine, Tohoku University, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan.
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
| | - Takekazu Kunieda
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
| |
Collapse
|
26
|
Yamane A, Kohno H, Ikeda T, Kaneko K, Ugajin A, Fujita T, Kunieda T, Kubo T. Gene expression and immunohistochemical analyses of mKast suggest its late pupal and adult-specific functions in the honeybee brain. PLoS One 2017; 12:e0176809. [PMID: 28472083 PMCID: PMC5417555 DOI: 10.1371/journal.pone.0176809] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Accepted: 04/18/2017] [Indexed: 01/04/2023] Open
Abstract
In insect brains, the mushroom bodies (MBs, a higher center) comprise intrinsic neurons, termed Kenyon cells (KCs). We previously showed that the honeybee (Apis mellifera L.) MBs comprise four types of KCs, in addition to the previously known three types of KCs: class I large-type KCs (lKCs), class I small-type KCs (sKCs) and class II KCs, novel class I 'middle-type' KCs (mKCs), which are characterized by the preferential expression of a gene, termed mKast. Although mKast was originally discovered during the search for genes whose expression is enriched in the optic lobes (OLs) in the worker brain, subsequent analysis revealed that the gene is expressed in an mKC-preferential manner in the MBs. To gain more insights into the function of mKast in the honeybee brain, we here performed expression analysis of mKast and immunohistochemistry of the mKast protein. Prominent mKast expression was first detected in the brain after the P7 pupal stage. In addition, mKast was expressed almost selectively in the brain, suggesting its late pupal and adult specific functions in the brain. Immunohistochemistry revealed that mKast-like immunoreactivity is detected in several regions in the worker brain: inside and around the MB calyces, at the outer edges of the OL lobula, at the outer surface of and posterior to the antennal lobes (ALs), along the dorsal midline of the anterior brain and at the outer surface of the subesophageal ganglions (SOG). mKast-like immunoreactivities in the MBs, OLs, ALs and SOG were due to the corresponding neurons, while mKast-like immunoreactivities beneath/between the MB calyces were assumed to most likely correspond to the lateral/medial neurosecretory cells.
Collapse
Affiliation(s)
- Atsuhiro Yamane
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Hiroki Kohno
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Tsubomi Ikeda
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Kumi Kaneko
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Atsushi Ugajin
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Toshiyuki Fujita
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Takekazu Kunieda
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Takeo Kubo
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| |
Collapse
|
27
|
Abstract
Ellis-van Creveld (EvC) syndrome is an autosomal-recessive skeletal dysplasia, characterized by short stature and postaxial polydactyly. A series of dental abnormalities, including hypomorphic enamel formation, has been reported in patients with EvC. Despite previous studies that attempted to uncover the mechanism leading to abnormal tooth development, little is known regarding how hypomorphic enamel is formed in patients with EvC. In the current study, using Evc2/ Limbin mutant mice we recently generated, we analyzed enamel formation in the mouse incisor. Consistent with symptoms in human patients, we observed that Evc2 mutant mice had smaller incisors with enamel hypoplasia. Histologic observations coupled with ameloblast marker analyses suggested that Evc2 mutant preameloblasts were capable of differentiating to secretory ameloblasts; this process, however, was apparently delayed, due to delayed odontoblast differentiation, mediated by a limited number of dental mesenchymal stem cells in Evc2 mutant mice. This concept was further supported by the observation that dental mesenchymal-specific deletion of Evc2 phenocopied the tooth abnormalities in Evc2 mutants. Overall, our findings suggest that mutations in Evc2 affect dental mesenchymal stem cell homeostasis, which further leads to hypomorphic enamel formation.
Collapse
Affiliation(s)
- H Zhang
- 1 Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - H Takeda
- 2 Unit of Animal Genomics, GIGA Research Center and Faculty of Veterinary Medicine, University of Liège, 1 Avenue de l'Hôpital, Liège, Belgium
| | - T Tsuji
- 3 Graduate School of Environmental and Life Science, Okayama University, Okayama City, Japan
| | - N Kamiya
- 1 Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
- Faculty of Budo and Sport Studies, Tenri University, Nara, Japan
| | - T Kunieda
- 3 Graduate School of Environmental and Life Science, Okayama University, Okayama City, Japan
| | - Y Mochida
- 4 Department of Molecular and Cell Biology, Henry M. Goldman School of Dental Medicine, Boston University, Boston, MA, USA
| | - Y Mishina
- 1 Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
| |
Collapse
|
28
|
Feng JQ, Huang H, Lu Y, Ye L, Xie Y, Tsutsui TW, Kunieda T, Castranio T, Scott G, Bonewald LB, Mishina Y. The Dentin Matrix Protein 1 (Dmp1) is Specifically Expressed in Mineralized, but not Soft, Tissues during Development. J Dent Res 2016; 82:776-80. [PMID: 14514755 DOI: 10.1177/154405910308201003] [Citation(s) in RCA: 167] [Impact Index Per Article: 20.9] [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] [Indexed: 11/16/2022] Open
Abstract
Dentin Matrix Protein 1 ( Dmp1) was originally identified from dentin. However, its expression and function in vivo are not clear. To clarify these two issues, we have generated mice carrying a truncated Dmp1 gene by using gene targeting to replace exon 6 with a lacZ gene. Northern blot analysis shows the expected 5.8-kb Dmp1-lacZ fusion transcript and loss of the wild-type 2.8-kb Dmp1 transcript, confirmed by a lack of immunostaining for the protein. Using heterozygous animals, we demonstrate that Dmp1 is specific for mineralized tissues. Not previously shown, Dmp1 is also expressed in pulp cells. Dmp1-deficient embryos and newborns display no apparent gross abnormal phenotype, although there are a modest expansion of the hypertrophic chondrocyte zone and a modest increase in the long bone diameter. This suggests that DMP1 is not essential for early mouse skeletal or dental development.
Collapse
Affiliation(s)
- J Q Feng
- Department of Oral Biology, School of Dentistry, University of Missouri-Kansas City, 650 E. 25th Street, Kansas City, MO 64108, USA.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
29
|
Ito M, Saigo T, Abe W, Kubo T, Kunieda T. Establishment of an isogenic strain of the desiccation-sensitive tardigradeIsohypsibius myrops(Parachela, Eutardigrada) and its life history traits. Zool J Linn Soc 2016. [DOI: 10.1111/zoj.12449] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Makiko Ito
- Department of Biological Sciences; Graduate School of Science; The University of Tokyo; Tokyo Japan
| | - Tokiko Saigo
- Department of Biological Sciences; Graduate School of Science; The University of Tokyo; Tokyo Japan
| | - Wataru Abe
- Department of Biological Sciences; Graduate School of Science; The University of Tokyo; Tokyo Japan
- Department of Biology; Dokkyo Medical University; Tochigi Japan
| | - Takeo Kubo
- Department of Biological Sciences; Graduate School of Science; The University of Tokyo; Tokyo Japan
| | - Takekazu Kunieda
- Department of Biological Sciences; Graduate School of Science; The University of Tokyo; Tokyo Japan
| |
Collapse
|
30
|
Hatta-Kobayashi Y, Toyama-Shirai M, Yamanaka T, Takamori M, Wakabayashi Y, Naora Y, Kunieda T, Fukazawa T, Kubo T. Acute phase response in amputated tail stumps and neural tissue-preferential expression in tail bud embryos of the Xenopus neuronal pentraxin I gene. Dev Growth Differ 2016; 58:688-701. [PMID: 27804121 DOI: 10.1111/dgd.12326] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Revised: 09/25/2016] [Accepted: 09/25/2016] [Indexed: 12/26/2022]
Abstract
Regeneration of lost organs involves complex processes, including host defense from infection and rebuilding of lost tissues. We previously reported that Xenopus neuronal pentraxin I (xNP1) is expressed preferentially in regenerating Xenopus laevis tadpole tails. To evaluate xNP1 function in tail regeneration, and also in tail development, we analyzed xNP1 expression in tailbud embryos and regenerating/healing tails following tail amputation in the 'regeneration' period, as well as in the 'refractory' period, when tadpoles lose their tail regenerative ability. Within 10 h after tail amputation, xNP1 was induced at the amputation site regardless of the tail regenerative ability, suggesting that xNP1 functions in acute phase responses. xNP1 was widely expressed in regenerating tails, but not in the tail buds of tailbud embryos, suggesting its possible role in the immune response/healing after an injury. xNP1 expression was also observed in neural tissues/primordia in tailbud embryos and in the spinal cord in regenerating/healing tails in both periods, implying its possible roles in neural development or function. Moreover, during the first 48 h after amputation, xNP1 expression was sustained at the spinal cord of tails in the 'regeneration' period tadpoles, but not in the 'refractory' period tadpoles, suggesting that xNP1 expression at the spinal cord correlates with regeneration. Our findings suggest that xNP1 is involved in both acute phase responses and neural development/functions, which is unique compared to mammalian pentraxins whose family members are specialized in either acute phase responses or neural functions.
Collapse
Affiliation(s)
- Yuko Hatta-Kobayashi
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Mie Toyama-Shirai
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Takehiro Yamanaka
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Mayuko Takamori
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Yoko Wakabayashi
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Yuko Naora
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Takekazu Kunieda
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Taro Fukazawa
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Takeo Kubo
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, 113-0033, Japan
| |
Collapse
|
31
|
Uchida K, Kunieda T, Abbasi AR, Ogawa H, Murakami T, Tateyama S. Congenital Multiple Ocular Defects with Falciform Retinal Folds among Japanese Black Cattle. Vet Pathol 2016; 43:1017-21. [PMID: 17099164 DOI: 10.1354/vp.43-6-1017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
To clarify the morphologic features of the ocular disease recently occurring among Japanese Black cattle in southern Kyushu, 6 globes from 3 Japanese Black cattle, between 11 and 20 months old (cow Nos. 1 to 3), were pathologically examined. cow Nos. 1 and 2 were sired by the same Japanese Black bull, and cow No. 3 was sired by the ancestor (sire) of the former bull. The ocular lesions were pathologically similar to each other, except for the left eye of cow No. 1. The ocular lesions of 5 globes were characterized by microphthalmia, hypoplasia, and/or dysplasia of the lenses; persistence of the primary vitreous; and retinal dysplasia with total nonattachment. The left globe from cow No. 1 had no lens and severe hypoplasia and nonattachment of the retina. Because dysplastic retinal lesions that formed crescentic folds and a central column were the most characteristic features of the eyes, the falciform retinal fold with congenital nonattachment was the most likely disease entity. Although the cause of the ocular disease could not be clarified with the present study, an inherited ocular defect of the bull and its ancestor was suspected.
Collapse
Affiliation(s)
- K Uchida
- Department of Veterinary Pathology, Faculty of Agriculture, Miyazaki University, Miyazaki 889-2155, Japan.
| | | | | | | | | | | |
Collapse
|
32
|
Chen Y, Shimotake A, Matsumoto R, Kunieda T, Kikuchi T, Miyamoto S, Fukuyama H, Takahashi R, Ikeda A, Lambon Ralph MA. The 'when' and 'where' of semantic coding in the anterior temporal lobe: Temporal representational similarity analysis of electrocorticogram data. Cortex 2016; 79:1-13. [PMID: 27085891 PMCID: PMC4884671 DOI: 10.1016/j.cortex.2016.02.015] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 12/18/2015] [Accepted: 03/01/2016] [Indexed: 10/28/2022]
Abstract
Electrocorticograms (ECoG) provide a unique opportunity to monitor neural activity directly at the cortical surface. Ten patients with subdural electrodes covering ventral and lateral anterior temporal regions (ATL) performed a picture naming task. Temporal representational similarity analysis (RSA) was used, for the first time, to compare spatio-temporal neural patterns from the ATL surface with pre-defined theoretical models. The results indicate that the neural activity in the ventral subregion of the ATL codes semantic representations from 250 msec after picture onset. The observed activation similarity was not related to the visual similarity of the pictures or the phonological similarity of their names. In keeping with convergent evidence for the importance of the ATL in semantic processing, these results provide the first direct evidence of semantic coding from the surface of the ventral ATL and its time-course.
Collapse
Affiliation(s)
- Y Chen
- Neuroscience and Aphasia Research Unit, School of Psychological Sciences, University of Manchester, Manchester, UK
| | - A Shimotake
- Department of Neurology, Graduate School of Medicine, Kyoto University, Japan
| | - R Matsumoto
- Department of Epilepsy, Movement Disorders and Physiology, Graduate School of Medicine, Kyoto University, Japan.
| | - T Kunieda
- Department of Neurosurgery, Graduate School of Medicine, Kyoto University, Japan
| | - T Kikuchi
- Department of Neurosurgery, Graduate School of Medicine, Kyoto University, Japan
| | - S Miyamoto
- Department of Neurosurgery, Graduate School of Medicine, Kyoto University, Japan
| | - H Fukuyama
- Human Brain Research Center, Graduate School of Medicine, Kyoto University, Japan
| | - R Takahashi
- Department of Neurology, Graduate School of Medicine, Kyoto University, Japan
| | - A Ikeda
- Department of Epilepsy, Movement Disorders and Physiology, Graduate School of Medicine, Kyoto University, Japan
| | - M A Lambon Ralph
- Neuroscience and Aphasia Research Unit, School of Psychological Sciences, University of Manchester, Manchester, UK.
| |
Collapse
|
33
|
Kondo K, Kubo T, Kunieda T. Suggested Involvement of PP1/PP2A Activity and De Novo Gene Expression in Anhydrobiotic Survival in a Tardigrade, Hypsibius dujardini, by Chemical Genetic Approach. PLoS One 2015; 10:e0144803. [PMID: 26690982 PMCID: PMC4686906 DOI: 10.1371/journal.pone.0144803] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Accepted: 11/24/2015] [Indexed: 12/19/2022] Open
Abstract
Upon desiccation, some tardigrades enter an ametabolic dehydrated state called anhydrobiosis and can survive a desiccated environment in this state. For successful transition to anhydrobiosis, some anhydrobiotic tardigrades require pre-incubation under high humidity conditions, a process called preconditioning, prior to exposure to severe desiccation. Although tardigrades are thought to prepare for transition to anhydrobiosis during preconditioning, the molecular mechanisms governing such processes remain unknown. In this study, we used chemical genetic approaches to elucidate the regulatory mechanisms of anhydrobiosis in the anhydrobiotic tardigrade, Hypsibius dujardini. We first demonstrated that inhibition of transcription or translation drastically impaired anhydrobiotic survival, suggesting that de novo gene expression is required for successful transition to anhydrobiosis in this tardigrade. We then screened 81 chemicals and identified 5 chemicals that significantly impaired anhydrobiotic survival after severe desiccation, in contrast to little or no effect on survival after high humidity exposure only. In particular, cantharidic acid, a selective inhibitor of protein phosphatase (PP) 1 and PP2A, exhibited the most profound inhibitory effects. Another PP1/PP2A inhibitor, okadaic acid, also significantly and specifically impaired anhydrobiotic survival, suggesting that PP1/PP2A activity plays an important role for anhydrobiosis in this species. This is, to our knowledge, the first report of the required activities of signaling molecules for desiccation tolerance in tardigrades. The identified inhibitory chemicals could provide novel clues to elucidate the regulatory mechanisms underlying anhydrobiosis in tardigrades.
Collapse
Affiliation(s)
- Koyuki Kondo
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113–0033, Japan
| | - Takeo Kubo
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113–0033, Japan
| | - Takekazu Kunieda
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113–0033, Japan
- * E-mail:
| |
Collapse
|
34
|
Takayanagi-Kiya S, Misawa-Hojo K, Kiya T, Kunieda T, Kubo T. Splicing variants of NOL4 differentially regulate the transcription activity of Mlr1 and Mlr2 in cultured cells. Zoolog Sci 2015; 31:735-40. [PMID: 25366156 DOI: 10.2108/zs140049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Mlr1 (Mblk-1-related protein-1) and Mlr2 are mouse homologs of transcription factor Mblk-1 (Mushroom body large-type Kenyon cell-specific protein-1), which we originally identified from the honeybee brain. In the present study, aiming at identifying coregulator(s) of Mlr1 and Mlr2 from the mouse brain, we used yeast two-hybrid screening of mouse brain cDNA library to search for interaction partners of Mlr 1 and Mlr2, respectively. We identified nucleolar protein 4 (NOL4) splicing variants as major interaction partners for both Mlr1 and Mlr2. Among the three murine NOL4 splicing variants, we further characterized NOL4-S, which lacks an N-terminal part of NOL4-L, and NOL4-SΔ, which lacks nuclear localization signal (NLS)-containing domain of NOL4-S. A GST pull-down assay revealed that Mlr1 interacts with both NOL4-S and NOL4-SΔ, whereas Mlr2 interacts with NOL4-S, but not with NOL4-SΔ. These results indicate that the NLS-containing domain of NO4-S Is necessary for in vitro binding with Mlr2, but not for that with Mlr1. Furthermore, a luciferase assay using Schneider's Line 2 cells revealed that transactivation activity of Mlr1 was significantly suppressed by both NOL4-S and NOL4-SΔ, with almost complete suppression by NOL4-SΔ. In contrast, transactivation activity of Mlr2 was significantly suppressed by NOL4-S but rather activated by NOL4-SΔ. Our findings suggest that transactivation activities of Mlr1 and Mlr2 are differentially regulated by splicing variants of NOL4, which are expressed in a tissue-selective manner.
Collapse
Affiliation(s)
- Seika Takayanagi-Kiya
- 1 Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan
| | | | | | | | | |
Collapse
|
35
|
Fujimoto K, Arakawa Y, Murata D, Fukui N, Kunieda T, Takagi Y, Miyamoto S. NI-28 * ANALYSIS OF BEVACIZUMAB RESPONSE TO DISTINGUISH BETWEEN TUMOR RECURRENCE AND CEREBRAL RADIATION NECROSIS. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou264.27] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
36
|
Arakawa Y, Nakamoto Y, Okada T, Takeuchi Y, Minamiguchi S, Kunieda T, Takagi Y, Miyamoto S. NI-06 * MOLECULAR IMAGING OF PINEAL PARENCHYMAL TUMOR BY (68)Ga-DOTATOC-PET/C. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou264.6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
37
|
Yamao Y, Matsumoto R, Kunieda T, Arakawa Y, Shibata S, Inano R, Kikuchi T, Sawamoto N, Mikuni N, Ikeda A, Fukuyama H, Miyamoto S. P503: Intraoperative language network monitoring by means of cortico-cortical evoked potentials. Clin Neurophysiol 2014. [DOI: 10.1016/s1388-2457(14)50600-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
38
|
Classen CF, William D, Linnebacher M, Farhod A, Kedr W, Elsabe B, Fadel S, Van Gool S, De Vleeschouwer S, Koks C, Garg A, Ehrhardt M, Riva M, De Vleeschouwer S, Agostinis P, Graf N, Van Gool S, Yao TW, Yoshida Y, Zhang J, Ozawa T, James D, Nicolaides T, Kebudi R, Cakir FB, Gorgun O, Agaoglu FY, Darendeliler E, Van Gool S, De Vleeschouwer S, Al-Kofide A, Al-Shail E, Khafaga Y, Al-Hindi H, Dababo M, Haq AU, Anas M, Barria MG, Siddiqui K, Hassounah M, Ayas M, van Zanten SV, Jansen M, van Vuurden D, Huisman M, Vugts D, Hoekstra O, van Dongen G, Kaspers G, Cockle J, Ilett E, Scott K, Bruning-Richardson A, Picton S, Short S, Melcher A, Benesch M, Warmuth-Metz M, von Bueren AO, Hoffmann M, Pietsch T, Kortmann RD, Eyrich M, Graf N, Rutkowski S, Fruhwald MC, Faber J, Kramm C, Porkholm M, Valanne L, Lonnqvist T, Holm S, Lannering B, Riikonen P, Wojcik D, Sehested A, Clausen N, Harila-Saari A, Schomerus E, Thorarinsdottir HK, Lahteenmaki P, Arola M, Thomassen H, Saarinen-Pihkala UM, Kivivuori SM, Buczkowicz P, Hoeman C, Rakopoulos P, Pajovic S, Morrison A, Bouffet E, Bartels U, Becher O, Hawkins C, Gould TWA, Rahman CV, Smith SJ, Barrett DA, Shakesheff KM, Grundy RG, Rahman R, Barua N, Cronin D, Gill S, Lowisl S, Hochart A, Maurage CA, Rocourt N, Vinchon M, Kerdraon O, Escande F, Grill J, Pick VK, Leblond P, Burzynski G, Janicki T, Burzynski S, Marszalek A, Ramani N, Zaky W, Kannan G, Morani A, Sandberg D, Ketonen L, Maher O, Corrales-Medina F, Meador H, Khatua S, Brassesco M, Delsin L, Roberto G, Silva C, Ana L, Rego E, Scrideli C, Umezawa K, Tone L, Kim SJ, Kim CY, Kim IA, Han JH, Choi BS, Ahn HS, Choi HS, Haque F, Rahman R, Layfield R, Grundy R, Gandola L, Pecori E, Biassoni V, Schiavello E, Chiruzzi C, Spreafico F, Modena P, Bach F, Pignoli E, Massimino M, Drogosiewicz M, Dembowska-Baginska B, Jurkiewicz E, Filipek I, Perek-Polnik M, Swieszkowska E, Perek D, Bender S, Jones DT, Warnatz HJ, Hutter B, Zichner T, Gronych J, Korshunov A, Eils R, Korbel JO, Yaspo ML, Lichter P, Pfister SM, Yadavilli S, Becher OJ, Kambhampati M, Packer RJ, Nazarian J, Lechon FC, Fowkes L, Khabra K, Martin-Retortillo LM, Marshall LV, Vaidya S, Koh DM, Leach MO, Pearson AD, Zacharoulis S, Lechon FC, Fowkes L, Khabra K, Martin-Retortillo LM, Marshall LV, Schrey D, Barone G, Vaidya S, Koh DM, Pearson AD, Zacharoulis S, Panditharatna E, Stampar M, Siu A, Gordish-Dressman H, Devaney J, Kambhampati M, Hwang EI, Packer RJ, Nazarian J, Chung AH, Mittapalli RK, Elmquist WF, Becher OJ, Castel D, Debily MA, Philippe C, Truffaux N, Taylor K, Calmon R, Boddaert N, Le Dret L, Saulnier P, Lacroix L, Mackay A, Jones C, Puget S, Sainte-Rose C, Blauwblomme T, Varlet P, Grill J, Entz-Werle N, Maugard C, Bougeard G, Nguyen A, Chenard MP, Schneider A, Gaub MP, Tsoli M, Vanniasinghe A, Luk P, Dilda P, Haber M, Hogg P, Ziegler D, Simon S, Tsoli M, Vanniasinghe A, Monje M, Gurova K, Gudkov A, Haber M, Ziegler D, Zapotocky M, Churackova M, Malinova B, Zamecnik J, Kyncl M, Tichy M, Puchmajerova A, Stary J, Sumerauer D, Boult J, Vinci M, Taylor K, Perryman L, Box G, Jury A, Popov S, Ingram W, Monje M, Eccles S, Jones C, Robinson S, Emir S, Demir HA, Bayram C, Cetindag F, Kabacam GB, Fettah A, Boult J, Li J, Vinci M, Jury A, Popov S, Jamin Y, Cummings C, Eccles S, Bamber J, Sinkus R, Jones C, Robinson S, Nandhabalan M, Bjerke L, Vinci M, Burford A, Ingram W, Mackay A, von Bueren A, Baudis M, Clarke P, Collins I, Workman P, Jones C, Taylor K, Mackay A, Vinci M, Popov S, Ingram W, Entz-Werle N, Monje M, Olaciregui N, Mora J, Carcaboso A, Bullock A, Jones C, Vinci M, Mackay A, Burford A, Taylor K, Popov S, Ingram W, Monje M, Alonso M, Olaciregui N, de Torres C, Cruz O, Mora J, Carcaboso A, Jones C, Filipek I, Drogosiewicz M, Perek-Polnik M, Swieszkowska E, Dembowska-Baginska B, Jurkiewicz E, Perek D, Nguyen A, Pencreach E, Mackay A, Moussalieh FM, Guenot D, Namer I, Chenard MP, Jones C, Entz-Werle N, Pollack I, Jakacki R, Butterfield L, Hamilton R, Panigrahy A, Potter D, Connelly A, Dibridge S, Whiteside T, Okada H, Ahsan S, Raabe E, Haffner M, Warren K, Quezado M, Ballester L, Nazarian J, Eberhart C, Rodriguez F, Ramachandran C, Nair S, Quirrin KW, Khatib Z, Escalon E, Melnick S, Classen CF, Hofmann M, Schmid I, Simon T, Maass E, Russo A, Fleischhack G, Becker M, Hauch H, Sander A, Kramm C, Grasso C, Truffaux N, Berlow N, Liu L, Debily MA, Davis L, Huang E, Woo P, Tang Y, Ponnuswami A, Chen S, Huang Y, Hutt-Cabezas M, Warren K, Dret L, Meltzer P, Mao H, Quezado M, van Vuurden D, Abraham J, Fouladi M, Svalina MN, Wang N, Hawkins C, Raabe E, Hulleman E, Li XN, Keller C, Spellman PT, Pal R, Grill J, Monje M, Jansen MHA, Sewing ACP, Lagerweij T, Vuchts DJ, van Vuurden DG, Caretti V, Wesseling P, Kaspers GJL, Hulleman E, Cohen K, Raabe E, Pearl M, Kogiso M, Zhang L, Qi L, Lindsay H, Lin F, Berg S, Li XN, Muscal J, Amayiri N, Tabori U, Campbel B, Bakry D, Aronson M, Durno C, Gallinger S, Malkin D, Qaddumi I, Musharbash A, Swaidan M, Bouffet E, Hawkins C, Al-Hussaini M, Rakopoulos P, Shandilya S, McCully C, Murphy R, Akshintala S, Cole D, Macallister RP, Cruz R, Widemann B, Warren K, Salloum R, Smith A, Glaunert M, Ramkissoon A, Peterson S, Baker S, Chow L, Sandgren J, Pfeifer S, Popova S, Alafuzoff I, de Stahl TD, Pietschmann S, Kerber MJ, Zwiener I, Henke G, Kortmann RD, Muller K, von Bueren A, Sieow NYF, Hoe RHM, Tan AM, Chan MY, Soh SY, Hawkins C, Burrell K, Chornenkyy Y, Remke M, Golbourn B, Buczkowicz P, Barzczyk M, Taylor M, Rutka J, Dirks P, Zadeh G, Agnihotri S, Hashizume R, Ihara Y, Andor N, Chen X, Lerner R, Huang X, Tom M, Solomon D, Mueller S, Petritsch C, Zhang Z, Gupta N, Waldman T, James D, Dujua A, Co J, Hernandez F, Doromal D, Hegde M, Wakefield A, Brawley V, Grada Z, Byrd T, Chow K, Krebs S, Heslop H, Gottschalk S, Yvon E, Ahmed N, Truffaux N, Philippe C, Cornilleau G, Paulsson J, Andreiuolo F, Guerrini-Rousseau L, Puget S, Geoerger B, Vassal G, Ostman A, Grill J, Parsons DW, Lin F, Trevino LR, Gao F, Shen X, Hampton O, Lindsay H, Kosigo M, Qi L, Baxter PA, Su JM, Chintagumpala M, Dauser R, Adesina A, Plon SE, Li XN, Wheeler DA, Lau CC, Pietsch T, Gielen G, Muehlen AZ, Kwiecien R, Wolff J, Kramm C, Lulla RR, Laskowski J, Goldman S, Gopalakrishnan V, Fangusaro J, Mackay A, Taylor K, Vinci M, Jones C, Kieran M, Fontebasso A, Papillon-Cavanagh S, Schwartzentruber J, Nikbakht H, Gerges N, Fiset PO, Bechet D, Faury D, De Jay N, Ramkissoon L, Corcoran A, Jones D, Sturm D, Johann P, Tomita T, Goldman S, Nagib M, Bendel A, Goumnerova L, Bowers DC, Leonard JR, Rubin JB, Alden T, DiPatri A, Browd S, Leary S, Jallo G, Cohen K, Prados MD, Banerjee A, Carret AS, Ellezam B, Crevier L, Klekner A, Bognar L, Hauser P, Garami M, Myseros J, Dong Z, Siegel PM, Gump W, Ayyanar K, Ragheb J, Khatib Z, Krieger M, Kiehna E, Robison N, Harter D, Gardner S, Handler M, Foreman N, Brahma B, MacDonald T, Malkin H, Chi S, Manley P, Bandopadhayay P, Greenspan L, Ligon A, Albrecht S, Pfister SM, Ligon KL, Majewski J, Gupta N, Jabado N, Hoeman C, Cordero F, Halvorson K, Hawkins C, Becher O, Taylor I, Hutt M, Weingart M, Price A, Nazarian J, Eberhart C, Raabe E, Kantar M, Onen S, Kamer S, Turhan T, Kitis O, Ertan Y, Cetingul N, Anacak Y, Akalin T, Ersahin Y, Mason G, Nazarian J, Ho C, Devaney J, Stampar M, Kambhampati M, Crozier F, Vezina G, Packer R, Hwang E, Gilheeney S, Millard N, DeBraganca K, Khakoo Y, Kramer K, Wolden S, Donzelli M, Fischer C, Petriccione M, Dunkel I, Afzal S, Carret AS, Fleming A, Larouche V, Zelcer S, Johnston DL, Kostova M, Mpofu C, Decarie JC, Strother D, Lafay-Cousin L, Eisenstat D, Fryer C, Hukin J, Bartels U, Bouffet E, Hsu M, Lasky J, Moore T, Liau L, Davidson T, Prins R, Fouladi M, Bartels U, Warren K, Hassal T, Baugh J, Kirkendall J, Doughman R, Leach J, Jones B, Miles L, Hawkins C, Bouffet E, Hargrave D, Grill J, Jones C, Jacques T, Savage S, Goldman S, Leary S, Packer R, Saunders D, Wesseling P, Varlet P, van Vuurden D, Wallace R, Flutter B, Morgenestern D, Hargrave D, Blanco E, Howe K, Lowdell M, Samuel E, Michalski A, Anderson J, Arakawa Y, Umeda K, Watanabe KI, Mizowaki T, Hiraoka M, Hiramatsu H, Adachi S, Kunieda T, Takagi Y, Miyamoto S, Venneti S, Santi M, Felicella MM, Sullivan LM, Dolgalev I, Martinez D, Perry A, Lewis PW, Allis DC, Thompson CB, Judkins AR. HIGH GRADE GLIOMAS AND DIPG. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
39
|
Fumuro T, Matsumoto R, Matsuhashi M, Usami K, Shimotake A, Kunieda T, Takahashi R, Fukuyama H, Ikeda A. P372: Scalp-recorded slow potentials during neuro-feedback training well reflects cortical activity? Clin Neurophysiol 2014. [DOI: 10.1016/s1388-2457(14)50481-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
40
|
Inano R, Sawamoto N, Kunieda T, Kikuchi T, Tabu H, Okada T, Togashi K, Takahashi R, Fukuyama H, Miyamoto S. P304: Striatal dopamine depletion lead to altered functional connectivity with the thalamus in Parkinson’s disease: a PET and fMRI study. Clin Neurophysiol 2014. [DOI: 10.1016/s1388-2457(14)50425-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
41
|
Kaneko K, Ikeda T, Nagai M, Hori S, Umatani C, Tadano H, Ugajin A, Nakaoka T, Paul RK, Fujiyuki T, Shirai K, Kunieda T, Takeuchi H, Kubo T. Novel middle-type Kenyon cells in the honeybee brain revealed by area-preferential gene expression analysis. PLoS One 2013; 8:e71732. [PMID: 23990981 PMCID: PMC3749211 DOI: 10.1371/journal.pone.0071732] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2013] [Accepted: 07/01/2013] [Indexed: 11/19/2022] Open
Abstract
The mushroom bodies (a higher center) of the honeybee (Apis mellifera L) brain were considered to comprise three types of intrinsic neurons, including large- and small-type Kenyon cells that have distinct gene expression profiles. Although previous neural activity mapping using the immediate early gene kakusei suggested that small-type Kenyon cells are mainly active in forager brains, the precise Kenyon cell types that are active in the forager brain remain to be elucidated. We searched for novel gene(s) that are expressed in an area-preferential manner in the honeybee brain. By identifying and analyzing expression of a gene that we termed mKast (middle-type Kenyon cell-preferential arrestin-related protein), we discovered novel ‘middle-type Kenyon cells’ that are sandwiched between large- and small-type Kenyon cells and have a gene expression profile almost complementary to those of large– and small-type Kenyon cells. Expression analysis of kakusei revealed that both small-type Kenyon cells and some middle-type Kenyon cells are active in the forager brains, suggesting their possible involvement in information processing during the foraging flight. mKast expression began after the differentiation of small- and large-type Kenyon cells during metamorphosis, suggesting that middle-type Kenyon cells differentiate by modifying some characteristics of large– and/or small-type Kenyon cells. Interestingly, CaMKII and mKast, marker genes for large– and middle-type Kenyon cells, respectively, were preferentially expressed in a distinct set of optic lobe (a visual center) neurons. Our findings suggested that it is not simply the Kenyon cell-preferential gene expression profiles, rather, a ‘clustering’ of neurons with similar gene expression profiles as particular Kenyon cell types that characterize the honeybee mushroom body structure.
Collapse
Affiliation(s)
- Kumi Kaneko
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Tsubomi Ikeda
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Mirai Nagai
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Sayaka Hori
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Chie Umatani
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Hiroto Tadano
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Atsushi Ugajin
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Takayoshi Nakaoka
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Rajib Kumar Paul
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Tomoko Fujiyuki
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Kenichi Shirai
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Takekazu Kunieda
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Hideaki Takeuchi
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Takeo Kubo
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
- * E-mail:
| |
Collapse
|
42
|
Ugajin A, Kunieda T, Kubo T. Identification and characterization of an Egr ortholog as a neural immediate early gene in the European honeybee (Apis mellifera L.). FEBS Lett 2013; 587:3224-30. [PMID: 23994532 DOI: 10.1016/j.febslet.2013.08.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Revised: 08/19/2013] [Accepted: 08/19/2013] [Indexed: 10/26/2022]
Abstract
To date, there are only few reports of immediate early genes (IEGs) available in insects. Aiming at identifying a conserved IEG in insects, we characterized an Egr homolog of the honeybee (AmEgr: Apis mellifera Egr). AmEgr was transiently induced in whole worker brains after seizure induction. In situ hybridization for AmEgr indicated that neural activity of a certain mushroom body (a higher brain center) neuron subtype, which is the same as that we previously identified using another non-coding IEG, termed kakusei, is more enhanced in forager brains. These findings suggest that Egr can be utilized as an IEG in insects.
Collapse
Affiliation(s)
- Atsushi Ugajin
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | | | | |
Collapse
|
43
|
Horikawa DD, Cumbers J, Sakakibara I, Rogoff D, Leuko S, Harnoto R, Arakawa K, Katayama T, Kunieda T, Toyoda A, Fujiyama A, Rothschild LJ. Analysis of DNA repair and protection in the Tardigrade Ramazzottius varieornatus and Hypsibius dujardini after exposure to UVC radiation. PLoS One 2013; 8:e64793. [PMID: 23762256 PMCID: PMC3675078 DOI: 10.1371/journal.pone.0064793] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2012] [Accepted: 04/18/2013] [Indexed: 11/18/2022] Open
Abstract
Tardigrades inhabiting terrestrial environments exhibit extraordinary resistance to ionizing radiation and UV radiation although little is known about the mechanisms underlying the resistance. We found that the terrestrial tardigrade Ramazzottius varieornatus is able to tolerate massive doses of UVC irradiation by both being protected from forming UVC-induced thymine dimers in DNA in a desiccated, anhydrobiotic state as well as repairing the dimers that do form in the hydrated animals. In R. varieornatus accumulation of thymine dimers in DNA induced by irradiation with 2.5 kJ/m2 of UVC radiation disappeared 18 h after the exposure when the animals were exposed to fluorescent light but not in the dark. Much higher UV radiation tolerance was observed in desiccated anhydrobiotic R. varieornatus compared to hydrated specimens of this species. On the other hand, the freshwater tardigrade species Hypsibius dujardini that was used as control, showed much weaker tolerance to UVC radiation than R. varieornatus, and it did not contain a putative phrA gene sequence. The anhydrobiotes of R. varieornatus accumulated much less UVC-induced thymine dimers in DNA than hydrated one. It suggests that anhydrobiosis efficiently avoids DNA damage accumulation in R. varieornatus and confers better UV radiation tolerance on this species. Thus we propose that UV radiation tolerance in tardigrades is due to the both high capacities of DNA damage repair and DNA protection, a two-pronged survival strategy.
Collapse
Affiliation(s)
- Daiki D. Horikawa
- Biospheric Science Branch, NASA Ames Research Center, Moffett Field, California, United States of America
- NASA Astrobiology Institute
- * E-mail: (DDH); (LJR)
| | - John Cumbers
- Biospheric Science Branch, NASA Ames Research Center, Moffett Field, California, United States of America
- Department of Molecular Biology, Cell Biology and Biochemistry, Brown University, Providence, Rhode Island, United States of America
| | - Iori Sakakibara
- INSERM U1016, Institut Cochin, Paris, France
- CNRS UMR 8104, Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Dana Rogoff
- Biospheric Science Branch, NASA Ames Research Center, Moffett Field, California, United States of America
| | - Stefan Leuko
- Biospheric Science Branch, NASA Ames Research Center, Moffett Field, California, United States of America
| | - Raechel Harnoto
- California Polytechnic State University, San Luis Obispo, California, United States of America
| | - Kazuharu Arakawa
- Institute for Advanced Biosciences, Keio University, Fujisawa, Japan
| | - Toshiaki Katayama
- Human Genome Center, Institute of Medical Science, University of Tokyo, Tokyo, Japan
| | - Takekazu Kunieda
- Department of Biological Sciences, Graduate School of Science, University of Tokyo, Tokyo, Japan
| | - Atsushi Toyoda
- Center for Information Biology, National Institute of Genetics, Mishima, Shizuoka, Japan
| | - Asao Fujiyama
- Principles of Informatics Research Division, National Institute of Informatics, Tokyo, Japan
| | - Lynn J. Rothschild
- Biospheric Science Branch, NASA Ames Research Center, Moffett Field, California, United States of America
- NASA Astrobiology Institute
- Department of Molecular Biology, Cell Biology and Biochemistry, Brown University, Providence, Rhode Island, United States of America
- * E-mail: (DDH); (LJR)
| |
Collapse
|
44
|
Naora Y, Hishida Y, Fukazawa T, Kunieda T, Kubo T. Expression analysis of XPhyH-like during development and tail regeneration in Xenopus tadpoles: possible role of XPhyH-like expressing immune cells in impaired tail regenerative ability. Biochem Biophys Res Commun 2013; 431:152-7. [PMID: 23313512 DOI: 10.1016/j.bbrc.2013.01.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2012] [Accepted: 01/03/2013] [Indexed: 10/27/2022]
Abstract
Xenopus tadpoles have high regenerative ability of amputated tails except during the 'refractory period', when the ability is transiently lost. We previously demonstrated that distinct immune responses occur in tail stumps between the refractory and pre/post-refractory regeneration periods. Furthermore, treatment with an immunosuppressant, FK506, restores the tail regenerative ability during the refractory period. Based on these findings, we previously proposed that autoreactive immune cells infiltrate the tail stumps to attack blastema cells as 'non-self' during the refractory period, resulting in the impaired regenerative ability. The immune cells that attack the blastema cells, however, remained unclear. Here we screened for genes whose expression in the tail stumps was altered by FK506 treatment during the refractory period and identified a Xenopus homolog of phytanoyl-CoA dioxygenase (PhyH)-like. XPhyH-like expression transiently increased in tail stumps after amputation during the refractory period, and was reduced by FK506 treatment. XPhyH-like expression in the whole tadpole body specifically increased during the refractory period and was enriched in the blood cell fraction. These findings suggest that XPhyH-like is expressed in autoreactive immune cells that are distributed in the whole body during the refractory period and transiently infiltrate the tail stumps to attack the blastema cells as 'non-self'.
Collapse
Affiliation(s)
- Yuko Naora
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Tokyo 113-0033, Japan.
| | | | | | | | | |
Collapse
|
45
|
Fujita T, Kozuka-Hata H, Ao-Kondo H, Kunieda T, Oyama M, Kubo T. Proteomic Analysis of the Royal Jelly and Characterization of the Functions of its Derivation Glands in the Honeybee. J Proteome Res 2012; 12:404-11. [DOI: 10.1021/pr300700e] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Toshiyuki Fujita
- Department of Biological Sciences, Graduate
School of Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - Hiroko Kozuka-Hata
- Medical Proteomics Laboratory, Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
| | - Hiroko Ao-Kondo
- Medical Proteomics Laboratory, Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
| | - Takekazu Kunieda
- Department of Biological Sciences, Graduate
School of Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - Masaaki Oyama
- Medical Proteomics Laboratory, Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
| | - Takeo Kubo
- Department of Biological Sciences, Graduate
School of Science, The University of Tokyo, Tokyo 113-0033, Japan
| |
Collapse
|
46
|
Yamaguchi A, Tanaka S, Yamaguchi S, Kuwahara H, Takamura C, Imajoh-Ohmi S, Horikawa DD, Toyoda A, Katayama T, Arakawa K, Fujiyama A, Kubo T, Kunieda T. Two novel heat-soluble protein families abundantly expressed in an anhydrobiotic tardigrade. PLoS One 2012; 7:e44209. [PMID: 22937162 PMCID: PMC3429414 DOI: 10.1371/journal.pone.0044209] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2012] [Accepted: 07/30/2012] [Indexed: 01/05/2023] Open
Abstract
Tardigrades are able to tolerate almost complete dehydration by reversibly switching to an ametabolic state. This ability is called anhydrobiosis. In the anhydrobiotic state, tardigrades can withstand various extreme environments including space, but their molecular basis remains largely unknown. Late embryogenesis abundant (LEA) proteins are heat-soluble proteins and can prevent protein-aggregation in dehydrated conditions in other anhydrobiotic organisms, but their relevance to tardigrade anhydrobiosis is not clarified. In this study, we focused on the heat-soluble property characteristic of LEA proteins and conducted heat-soluble proteomics using an anhydrobiotic tardigrade. Our heat-soluble proteomics identified five abundant heat-soluble proteins. All of them showed no sequence similarity with LEA proteins and formed two novel protein families with distinct subcellular localizations. We named them Cytoplasmic Abundant Heat Soluble (CAHS) and Secretory Abundant Heat Soluble (SAHS) protein families, according to their localization. Both protein families were conserved among tardigrades, but not found in other phyla. Although CAHS protein was intrinsically unstructured and SAHS protein was rich in β-structure in the hydrated condition, proteins in both families changed their conformation to an α-helical structure in water-deficient conditions as LEA proteins do. Two conserved repeats of 19-mer motifs in CAHS proteins were capable to form amphiphilic stripes in α-helices, suggesting their roles as molecular shield in water-deficient condition, though charge distribution pattern in α-helices were different between CAHS and LEA proteins. Tardigrades might have evolved novel protein families with a heat-soluble property and this study revealed a novel repertoire of major heat-soluble proteins in these anhydrobiotic animals.
Collapse
Affiliation(s)
- Ayami Yamaguchi
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
| | - Sae Tanaka
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
| | - Shiho Yamaguchi
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
| | - Hirokazu Kuwahara
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
| | - Chizuko Takamura
- Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | | | - Daiki D. Horikawa
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
| | - Atsushi Toyoda
- Center for Genetic Resource Information, National Institute of Genetics, Mishima, Shizuoka, Japan
| | - Toshiaki Katayama
- Human Genome Center, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Kazuharu Arakawa
- Institute for Advanced Biosciences, Keio University, Fujisawa, Kanagawa, Japan
| | - Asao Fujiyama
- Center for Genetic Resource Information, National Institute of Genetics, Mishima, Shizuoka, Japan
- Principles of Informatics Research Division, National Institute of Informatics, Tokyo, Japan
| | - Takeo Kubo
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
| | - Takekazu Kunieda
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
- * E-mail:
| |
Collapse
|
47
|
Kanazawa K, Matsumoto R, Imamura H, Matsuhashi M, Kunieda T, Mikuni N, Miyamoto S, Takahashi R, Ikeda A. Are Ictal DC Shifts and High Frequency Oscillation Complementary? A Study by Subdural Electrodes in Partial Epilepsy (P04.012). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p04.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
48
|
Horikawa DD, Yamaguchi A, Sakashita T, Tanaka D, Hamada N, Yukuhiro F, Kuwahara H, Kunieda T, Watanabe M, Nakahara Y, Wada S, Funayama T, Katagiri C, Higashi S, Yokobori SI, Kuwabara M, Rothschild LJ, Okuda T, Hashimoto H, Kobayashi Y. Tolerance of anhydrobiotic eggs of the Tardigrade Ramazzottius varieornatus to extreme environments. Astrobiology 2012; 12:283-289. [PMID: 22490117 DOI: 10.1089/ast.2011.0669] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Tardigrades are tiny (less than 1 mm in length) invertebrate animals that have the potential to survive travel to other planets because of their tolerance to extreme environmental conditions by means of a dry ametabolic state called anhydrobiosis. While the tolerance of adult tardigrades to extreme environments has been reported, there are few reports on the tolerance of their eggs. We examined the ability of hydrated and anhydrobiotic eggs of the tardigrade Ramazzottius varieornatus to hatch after exposure to ionizing irradiation (helium ions), extremely low and high temperatures, and high vacuum. We previously reported that there was a similar pattern of tolerance against ionizing radiation between hydrated and anhydrobiotic adults. In contrast, anhydrobiotic eggs (50% lethal dose; 1690 Gy) were substantially more radioresistant than hydrated ones (50% lethal dose; 509 Gy). Anhydrobiotic eggs also have a broader temperature resistance compared with hydrated ones. Over 70% of the anhydrobiotic eggs treated at either -196°C or +50°C hatched successfully, but all the hydrated eggs failed to hatch. After exposure to high-vacuum conditions (5.3×10(-4) Pa to 6.2×10(-5) Pa), the hatchability of the anhydrobiotic eggs was comparable to that of untreated control eggs.
Collapse
|
49
|
Kuwahara H, Takaki Y, Shimamura S, Yoshida T, Maeda T, Kunieda T, Maruyama T. Loss of genes for DNA recombination and repair in the reductive genome evolution of thioautotrophic symbionts of Calyptogena clams. BMC Evol Biol 2011; 11:285. [PMID: 21966992 PMCID: PMC3202245 DOI: 10.1186/1471-2148-11-285] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2011] [Accepted: 10/03/2011] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Two Calyptogena clam intracellular obligate symbionts, Ca. Vesicomyosocius okutanii (Vok; C. okutanii symbiont) and Ca. Ruthia magnifica (Rma; C. magnifica symbiont), have small genomes (1.02 and 1.16 Mb, respectively) with low G+C contents (31.6% and 34.0%, respectively) and are thought to be in an ongoing stage of reductive genome evolution (RGE). They lack recA and some genes for DNA repair, including mutY. The loss of recA and mutY is thought to contribute to the stabilization of their genome architectures and GC bias, respectively. To understand how these genes were lost from the symbiont genomes, we surveyed these genes in the genomes from 10 other Calyptogena clam symbionts using the polymerase chain reaction (PCR). RESULTS Phylogenetic trees reconstructed using concatenated 16S and 23S rRNA gene sequences showed that the symbionts formed two clades, clade I (symbionts of C. kawamurai, C. laubieri, C. kilmeri, C. okutanii and C. soyoae) and clade II (those of C. pacifica, C. fausta, C. nautilei, C. stearnsii, C. magnifica, C. fossajaponica and C. phaseoliformis). recA was detected by PCR with consensus primers for recA in the symbiont of C. phaseoliformis. A detailed homology search revealed a remnant recA in the Rma genome. Using PCR with a newly designed primer set, intact recA or its remnant was detected in clade II symbionts. In clade I symbionts, the recA coding region was found to be mostly deleted.In the Rma genome, a pseudogene of mutY was found. Using PCR with newly designed primer sets, mutY was not found in clade I symbionts but was found in clade II symbionts. The G+C content of 16S and 23S rRNA genes in symbionts lacking mutY was significantly lower than in those with mutY. CONCLUSIONS The extant Calyptogena clam symbionts in clade II were shown to have recA and mutY or their remnants, while those in clade I did not. The present results indicate that the extant symbionts are losing these genes in RGE, and that the loss of mutY contributed to the GC bias of the genomes during their evolution.
Collapse
Affiliation(s)
- Hirokazu Kuwahara
- Marine Biodiversity Research Program, Japan Agency for Marine-Earth Science and Technology, Natsushima-cho, Yokosuka, Kanagawa 237-0061, Japan
| | | | | | | | | | | | | |
Collapse
|
50
|
Imai K, Mori T, Izumoto H, Watanabe M, Kunieda T, Takabatake N, Yamamoto S. MR imaging-based localized intra-arterial thrombolysis assisted by mechanical clot disruption for acute ischemic stroke due to middle cerebral artery occlusion. AJNR Am J Neuroradiol 2011; 32:748-52. [PMID: 21292794 DOI: 10.3174/ajnr.a2353] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE LIT-MCD is used in our institution for acute stroke due to MCA occlusion, with the goal of reducing symptomatic intracranial hemorrhage by maintaining recanalization of the occluded vessels. The purpose of the study was to investigate the safety and efficacy of LIT-MCD and to identify factors associated with a poor outcome in patients undergoing this procedure. MATERIALS AND METHODS LIT-MCD for MCA occlusion was performed in 90 of 1907 consecutive patients with acute stroke admitted to our institution. Radiographic data and clinical outcome were evaluated in the 90 patients, and factors predictive of a poor outcome (3-month mRS score, 3-6) were investigated by multivariate analysis. RESULTS Recanalization was achieved in 73 of the 90 patients (81%); symptomatic intracranial hemorrhage occurred in 7 (8%); procedure-related complications, in 9 (10%); and a favorable clinical outcome (3-month mRS score, 0-2), in 48 (53%). A high baseline NIHSS score (≥20), a low preprocedural ASPECTS on MR imaging (≤7), proximal M1 occlusion (in the horizontal segment of the MCA at or proximal to the lenticulostriate arteries), and no recanalization were significant predictors of a poor clinical outcome. CONCLUSIONS LIT-MCD is a safe and effective treatment for acute stroke due to MCA occlusion. However, further intervention is needed to improve the outcome of patients with proximal M1 occlusion.
Collapse
Affiliation(s)
- K Imai
- Department of Emergency Medicine, Acute Stroke Center of Kyoto First Red Cross Hospital, Kyoto, Japan.
| | | | | | | | | | | | | |
Collapse
|