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Zhou J, Mujahid Ali M, Yu W, Cheng X, Gao Y, Hu L. Oriented docking of the template for improved imprinting efficiency toward peptide with modifications. Anal Chim Acta 2024; 1301:342450. [PMID: 38553121 DOI: 10.1016/j.aca.2024.342450] [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: 01/06/2024] [Accepted: 03/04/2024] [Indexed: 04/02/2024]
Abstract
Molecular imprinting polymers (MIPs) are synthetic receptors as biomimetic materials for various applications ranging from sensing to separation and catalysis. However, currently existing MIPs are stuck to some of the issues including the longer preparation steps and poor performance. In this report, a facile and one-pot strategy by integrating the in-situ growth of magnetic nanoparticles and reversed phase microemulsion oriented molecularly imprinting strategy to develop magnetic molecular imprinted nanocomposites was proposed. Through self-assembling of the template, it brought up highly ordered and uniform arrangement of the imprinting structure, which offered faster adsorption kinetic as adsorption equilibrium was achived within 15 min, higher adsorption capacity (Qmax = 48.78 ± 1.54 μmol/g) and high affinity (Kd = 127.63 ± 9.66 μM) toward paradigm molecule-adenosine monophosphate (AMP) compared to the conventional bulk imprinting. The developed MIPs offered better affinity and superior specificity which allowed the specific enrichment toward targeted phosphorylated peptides from complex samples containing 100-fold more abundant interfering peptides. Interestingly, different types of MIPs can be developed which could targetly enrich the specific phosphorylated peptides for mass spectrometry analysis by simply switching the templates, and this strategy also successfully achieved imprinting of macromolecular peptides. Collectively, the approach showed broad applicability to target specific enrichment from metabolites to phosphorylated peptides and providing an alternative choice for selective recognition and analysis from complex biological systems.
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Affiliation(s)
- Juntao Zhou
- Center for Supramolecular Chemical Biology, State Key Laboratory of Supramolecular Structure and Materials, School of Life Sciences, Jilin University, Changchun, 130012, China
| | - Muhammad Mujahid Ali
- State Key Laboratory of Bioelectronics, National Demonstration Center for Experimental Biomedical Engineering Education, Southeast University, Nanjing, 210096, China.
| | - Wenjing Yu
- Center for Supramolecular Chemical Biology, State Key Laboratory of Supramolecular Structure and Materials, School of Life Sciences, Jilin University, Changchun, 130012, China
| | - Xianhui Cheng
- Center for Supramolecular Chemical Biology, State Key Laboratory of Supramolecular Structure and Materials, School of Life Sciences, Jilin University, Changchun, 130012, China
| | - Yujun Gao
- Center for Supramolecular Chemical Biology, State Key Laboratory of Supramolecular Structure and Materials, School of Life Sciences, Jilin University, Changchun, 130012, China
| | - Lianghai Hu
- Center for Supramolecular Chemical Biology, State Key Laboratory of Supramolecular Structure and Materials, School of Life Sciences, Jilin University, Changchun, 130012, China.
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Suzuki N, Oota-Ishigaki A, Kaizuka T, Itoh M, Yamazaki M, Natsume R, Abe M, Sakimura K, Mishina M, Hayashi T. Limb-Clasping Response in NMDA Receptor Palmitoylation-Deficient Mice. Mol Neurobiol 2024:10.1007/s12035-024-04166-9. [PMID: 38592586 DOI: 10.1007/s12035-024-04166-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 04/01/2024] [Indexed: 04/10/2024]
Abstract
Proper regulation of N-methyl-D-aspartate-type glutamate receptor (NMDA receptor) expression is responsible for excitatory synaptic functions in the mammalian brain. NMDA receptor dysfunction can cause various neuropsychiatric disorders and neurodegenerative diseases. Posttranslational protein S-palmitoylation, the covalent attachment of palmitic acid to intracellular cysteine residues via thioester bonds, occurs in the carboxyl terminus of GluN2B, which is the major regulatory NMDA receptor subunit. Mutations of three palmitoylatable cysteine residues in the membrane-proximal cluster of GluN2B to non-palmitoylatable serine (3CS) lead to the dephosphorylation of GluN2B Tyr1472 in the hippocampus and cerebral cortex, inducing a reduction in the surface expression of GluN2B-containig NMDA receptors. Furthermore, adult GluN2B 3CS homozygous mice demonstrated a definite clasping response without abnormalities in the gross brain structure, other neurological reflexes, or expression levels of synaptic proteins in the cerebrum. This behavioral disorder, observed in the GluN2B 3CS knock-in mice, indicated that complex higher brain functions are coordinated through the palmitoylation-dependent regulation of NMDA receptors in excitatory synapses.
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Affiliation(s)
- Nami Suzuki
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Central 6 (6-10), 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8566, Japan
| | - Akiko Oota-Ishigaki
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Central 6 (6-10), 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8566, Japan
| | - Toshie Kaizuka
- National Center of Neurology and Psychiatry (NCNP), National Institute of Neuroscience, Kodaira, Tokyo, 187-8502, Japan
| | - Masayuki Itoh
- National Center of Neurology and Psychiatry (NCNP), National Institute of Neuroscience, Kodaira, Tokyo, 187-8502, Japan
| | - Maya Yamazaki
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata, 951-8585, Japan
| | - Rie Natsume
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata, 951-8585, Japan
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, 951-8585, Japan
| | - Manabu Abe
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata, 951-8585, Japan
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, 951-8585, Japan
| | - Kenji Sakimura
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata, 951-8585, Japan
- Department of Animal Model Development, Brain Research Institute, Niigata University, Niigata, 951-8585, Japan
| | - Masayoshi Mishina
- Department of Molecular Neurobiology and Pharmacology, Graduate School of Medicine, University of Tokyo, Tokyo, 113-0033, Japan
- Brain Science Laboratory, The Research Organization of Science and Technology, Ritsumeikan University, Kusatsu, Shiga, 525-8577, Japan
| | - Takashi Hayashi
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Central 6 (6-10), 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8566, Japan.
- National Center of Neurology and Psychiatry (NCNP), National Institute of Neuroscience, Kodaira, Tokyo, 187-8502, Japan.
- Department of Molecular Neurobiology and Pharmacology, Graduate School of Medicine, University of Tokyo, Tokyo, 113-0033, Japan.
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3
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Martín-Hidalgo D, Solar-Málaga S, González-Fernández L, Zamorano J, García-Marín LJ, Bragado MJ. The compound YK 3-237 promotes pig sperm capacitation-related events. Vet Res Commun 2024; 48:773-786. [PMID: 37906355 PMCID: PMC10998788 DOI: 10.1007/s11259-023-10243-6] [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: 06/08/2023] [Accepted: 10/14/2023] [Indexed: 11/02/2023]
Abstract
Before fertilization of the oocyte, the spermatozoa must undergo through a series of biochemical changes in the female reproductive tract named sperm capacitation. Spermatozoa regulates its functions by post-translational modifications, being historically the most studied protein phosphorylation. In addition to phosphorylation, recently, protein acetylation has been described as an important molecular mechanism with regulatory roles in several reproductive processes. However, its role on the mammal's sperm capacitation process remains unraveled. Sirtuins are a deacetylase protein family with 7 members that regulate protein acetylation. Here, we investigated the possible role of SIRT1 on pig sperm capacitation-related events by using YK 3-237, a commercial SIRT1 activator drug. SIRT1 is localized in the midpiece of pig spermatozoa. Protein tyrosine phosphorylation (focused at p32) is an event associated to pig sperm capacitation that increases when spermatozoa are in vitro capacitated in presence of YK 3-237. Eventually, YK 3-237 induces acrosome reaction in capacitated spermatozoa: YK 3-237 treatment tripled (3.40 ± 0.40 fold increase) the percentage of acrosome-reacted spermatozoa compared to the control. In addition, YK 3-237 induces sperm intracellular pH alkalinization and raises the intracellular calcium levels through a CatSper independent mechanism. YK 3-237 was not able to bypass sAC inhibition by LRE1. In summary, YK 3-237 promotes pig sperm capacitation by a mechanism upstream of sAC activation and independent of CatSper calcium channel.
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Affiliation(s)
- David Martín-Hidalgo
- Departamento de Fisiología, Facultad de Medicina y Ciencias de la Salud, Universidad de Extremadura, Avenida de Elvas s/n, Badajoz, 06006, España.
- Grupo de Investigación Señalización Intracelular y Tecnología de la Reproducción (SINTREP), Instituto de Investigación INBIO G+C. Universidad de Extremadura, Cáceres, España.
- Unidad de Investigación, Complejo Hospitalario Universitario de Cáceres, Avenida Pablo Naranjo s/n, Cáceres, 10003, Spain.
| | - Soraya Solar-Málaga
- Departamento de Fisiología, Facultad de Medicina y Ciencias de la Salud, Universidad de Extremadura, Avenida de Elvas s/n, Badajoz, 06006, España
- Grupo de Investigación Señalización Intracelular y Tecnología de la Reproducción (SINTREP), Instituto de Investigación INBIO G+C. Universidad de Extremadura, Cáceres, España
| | - Lauro González-Fernández
- Departamento de Fisiología, Facultad de Medicina y Ciencias de la Salud, Universidad de Extremadura, Avenida de Elvas s/n, Badajoz, 06006, España
- Grupo de Investigación Señalización Intracelular y Tecnología de la Reproducción (SINTREP), Instituto de Investigación INBIO G+C. Universidad de Extremadura, Cáceres, España
| | - José Zamorano
- Unidad de Investigación, Complejo Hospitalario Universitario de Cáceres, Avenida Pablo Naranjo s/n, Cáceres, 10003, Spain
| | - Luis Jesús García-Marín
- Departamento de Fisiología, Facultad de Medicina y Ciencias de la Salud, Universidad de Extremadura, Avenida de Elvas s/n, Badajoz, 06006, España
- Grupo de Investigación Señalización Intracelular y Tecnología de la Reproducción (SINTREP), Instituto de Investigación INBIO G+C. Universidad de Extremadura, Cáceres, España
| | - María Julia Bragado
- Departamento de Fisiología, Facultad de Medicina y Ciencias de la Salud, Universidad de Extremadura, Avenida de Elvas s/n, Badajoz, 06006, España
- Grupo de Investigación Señalización Intracelular y Tecnología de la Reproducción (SINTREP), Instituto de Investigación INBIO G+C. Universidad de Extremadura, Cáceres, España
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Kuiper JWP, Gregg HL, Schüber M, Klein J, Hauck CR. Controling the cytoskeleton during CEACAM3-mediated phagocytosis. Eur J Cell Biol 2024; 103:151384. [PMID: 38215579 DOI: 10.1016/j.ejcb.2024.151384] [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: 09/01/2023] [Revised: 11/20/2023] [Accepted: 01/03/2024] [Indexed: 01/14/2024] Open
Abstract
Phagocytosis, an innate defense mechanism of multicellular animals, is initiated by specialized surface receptors. A phagocytic receptor expressed by human polymorphonuclear granulocytes, the major professional phagocytes in our body, is one of the fastest evolving human proteins implying a special role in human biology. This receptor, CEACAM3, is a member of the CarcinoEmbryonic Antigen-related Cell Adhesion Molecule (CEACAM) family and dedicated to the immediate recognition and rapid internalization of human-restricted pathogens. In this focused contribution, we will review the special adaptations of this protein, which co-evolves with different species of mucosa-colonizing bacteria. While the extracellular Immunoglobulin-variable (IgV)-like domain recognizes various bacterial adhesins, an Immunoreceptor Tyrosine-based Activation Motif (ITAM)-like sequence in the cytoplasmic tail of CEACAM3 constitutes the central signaling hub to trigger actin rearrangements needed for efficient phagocytosis. A major emphasis of this review will be placed on recent findings, which have revealed the multi-level control of this powerful phagocytic device. As tyrosine phosphorylation and small GTPase activity are central for CEACAM3-mediated phagocytosis, the counterregulation of CEACAM3 activity involves the receptor-type protein tyrosine phosphatase J (PTPRJ) as well as the Rac-GTP scavenging protein Cyri-B. Interference with such negative regulatory circuits has revealed that CEACAM3-mediated phagocytosis can be strongly enhanced. In principle, the knowledge gained by studying CEACAM3 can be applied to other phagocytic systems and opens the door to treatments, which boost the phagocytic capacity of professional phagocytes.
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Affiliation(s)
| | - Helena L Gregg
- Lehrstuhl Zellbiologie, Fachbereich Biologie, Universität Konstanz, Germany
| | - Meike Schüber
- Lehrstuhl Zellbiologie, Fachbereich Biologie, Universität Konstanz, Germany
| | - Jule Klein
- Lehrstuhl Zellbiologie, Fachbereich Biologie, Universität Konstanz, Germany
| | - Christof R Hauck
- Lehrstuhl Zellbiologie, Fachbereich Biologie, Universität Konstanz, Germany; Konstanz Research School Chemical Biology, Universität Konstanz, Germany.
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5
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Liu S, Xu P. Advancements in tyrosine kinase-mediated regulation of innate nucleic acid sensing. Zhejiang Da Xue Xue Bao Yi Xue Ban 2024; 53:35-46. [PMID: 38426691 PMCID: PMC10945499 DOI: 10.3724/zdxbyxb-2023-0480] [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: 10/08/2023] [Accepted: 12/28/2023] [Indexed: 03/02/2024]
Abstract
Innate nucleic acid sensing is a ubiquitous and highly conserved immunological process, which is pivotal for monitoring and responding to pathogenic invasion and cellular damage, and central to host defense, autoimmunity, cell fate determination and tumorigenesis. Tyrosine phosphorylation, a major type of post-translational modification, plays a critical regulatory role in innate immune sensing pathway. Core members of nucleic acid sensing signaling pathway, such as cyclic guanosine monophosphate-adenosine monophosphate synthase (cGAS), stimulator of interferon genes (STING), and TANK binding kinase 1 (TBK1), are all subject to activity regulation triggered by tyrosine phosphorylation, thereby affecting the host antiviral defense and anti-tumor immunity under physiological or pathological conditions. This review summarizes the recent advances in research on tyrosine kinases and tyrosine phosphorylation in regulation of nucleic acid sensing. The function and potential applications of targeting tyrosine phosphorylation in anti-tumor immunity is disussed to provide insights for understanding and expanding new anti-tumor strategies.
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Affiliation(s)
- Shengduo Liu
- Institute of Intelligent Medicine, Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 311200, China.
- Life Sciences Institute, Zhejiang University, Hangzhou 310058, China.
| | - Pinglong Xu
- Institute of Intelligent Medicine, Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 311200, China
- Life Sciences Institute, Zhejiang University, Hangzhou 310058, China
- Key Laboratory of Biosystems Homeostasis and Protection, Ministry of Education, Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Zhejiang University, Hangzhou 310058, China
- Cancer Center, Zhejiang University, Hangzhou 310058, China
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6
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Hsu MF, Ito Y, Singh JP, Hsu SF, Wells A, Jen KY, Meng TC, Haj FG. Protein tyrosine phosphatase 1B is a regulator of alpha-actinin4 in the glomerular podocyte. Biochim Biophys Acta Mol Cell Res 2024; 1871:119590. [PMID: 37730132 PMCID: PMC11060668 DOI: 10.1016/j.bbamcr.2023.119590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 09/12/2023] [Accepted: 09/14/2023] [Indexed: 09/22/2023]
Abstract
Glomerular podocytes are instrumental for the barrier function of the kidney, and podocyte injury contributes to proteinuria and the deterioration of renal function. Protein tyrosine phosphatase 1B (PTP1B) is an established metabolic regulator, and the inactivation of this phosphatase mitigates podocyte injury. However, there is a paucity of data regarding the substrates that mediate PTP1B actions in podocytes. This study aims to uncover novel substrates of PTP1B in podocytes and validate a leading candidate. To this end, using substrate-trapping and mass spectroscopy, we identified putative substrates of this phosphatase and investigated the actin cross-linking cytoskeletal protein alpha-actinin4. PTP1B and alpha-actinin4 co-localized in murine and human glomeruli and transiently transfected E11 podocyte cells. Additionally, podocyte PTP1B deficiency in vivo and culture was associated with elevated tyrosine phosphorylation of alpha-actinin4. Conversely, reconstitution of the knockdown cells with PTP1B attenuated alpha-actinin4 tyrosine phosphorylation. We demonstrated co-association between alpha-actinin4 and the PTP1B substrate-trapping mutant, which was enhanced upon insulin stimulation and disrupted by vanadate, consistent with an enzyme-substrate interaction. Moreover, we identified alpha-actinin4 tandem tyrosine residues 486/487 as mediators of its interaction with PTP1B. Furthermore, knockdown studies in E11 cells suggest that PTP1B and alpha-actinin4 are modulators of podocyte motility. These observations indicate that PTP1B and alpha-actinin4 are likely interacting partners in a signaling node that modulates podocyte function. Targeting PTP1B and plausibly this one of its substrates may represent a new therapeutic approach for podocyte injury that warrants additional investigation.
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Affiliation(s)
- Ming-Fo Hsu
- Department of Nutrition, University of California Davis, Davis, CA, USA
| | - Yoshihiro Ito
- Department of Nutrition, University of California Davis, Davis, CA, USA
| | - Jai Prakash Singh
- Institute of Biological Chemistry, Academia Sinica, Nankang, Taipei, Taiwan
| | - Shu-Fang Hsu
- Institute of Biological Chemistry, Academia Sinica, Nankang, Taipei, Taiwan
| | - Alan Wells
- Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Kuang-Yu Jen
- Department of Pathology and Laboratory Medicine, University of California Davis, Sacramento, CA, USA
| | - Tzu-Ching Meng
- Institute of Biological Chemistry, Academia Sinica, Nankang, Taipei, Taiwan
| | - Fawaz G Haj
- Department of Nutrition, University of California Davis, Davis, CA, USA; Comprehensive Cancer Center, University of California Davis, Sacramento, CA, USA; Division of Endocrinology, Diabetes, and Metabolism, Department of Internal Medicine, University of California Davis, Sacramento, CA, USA.
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7
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Gerritsen J, Rizzo S, Thévenin D, White FM. System-Level Analysis of the Effects of RPTPs on Cellular Signaling Networks. Methods Mol Biol 2024; 2743:153-163. [PMID: 38147214 PMCID: PMC10787581 DOI: 10.1007/978-1-0716-3569-8_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2023]
Abstract
Tyrosine phosphorylation regulates signaling network activity downstream of receptor tyrosine kinase (RTK) activation. Receptor protein tyrosine phosphatases (RPTPs) serve to dephosphorylate RTKs and their proximal adaptor proteins, thus serving to modulate RTK activity. While the general function of RPTPs is well understood, the direct and indirect substrates for each RPTP are poorly characterized. Here we describe a method, quantitative phosphotyrosine phosphoproteomics, that enables the identification of specific phosphorylation sites whose phosphorylation levels are altered by the expression and activity of a given RPTP. In a proof-of-concept application, we use this method to highlight several direct or indirect substrate phosphorylation sites for PTPRJ, also known as DEP1, and show their quantitative phosphorylation in the context of wild-type PTPRJ compared to a mutant form of PTPRJ with increased activity, in EGF-stimulated cells. This method is generally applicable to define the signaling network effects of each RPTP in cells or tissues under different physiological conditions.
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Affiliation(s)
- Jacqueline Gerritsen
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Sophie Rizzo
- Department of Chemistry, Lehigh University, Bethlehem, PA, USA
| | - Damien Thévenin
- Department of Chemistry, Lehigh University, Bethlehem, PA, USA
| | - Forest M White
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA.
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Shu L, Du C, Zuo Y. Abnormal phosphorylation of protein tyrosine in neurodegenerative diseases. J Neuropathol Exp Neurol 2023; 82:826-835. [PMID: 37589710 DOI: 10.1093/jnen/nlad066] [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] [Indexed: 08/18/2023] Open
Abstract
Neurodegenerative diseases, including Alzheimer disease, Parkinson disease, amyotrophic lateral sclerosis, and multiple sclerosis, are chronic disorders of the CNS that are characterized by progressive neuronal dysfunction. These diseases have diverse clinical and pathological features and their pathogenetic mechanisms are not yet fully understood. Currently, widely accepted hypotheses include the accumulation of misfolded proteins, oxidative stress from reactive oxygen species, mitochondrial dysfunction, DNA damage, neurotrophin dysfunction, and neuroinflammatory processes. In the CNS of patients with neurodegenerative diseases, a variety of abnormally phosphorylated proteins play important roles in pathological processes such as neuroinflammation and intracellular accumulation of β-amyloid plaques and tau. In recent years, the roles of abnormal tyrosine phosphorylation of intracellular signaling molecules regulated by protein tyrosine kinases (PTKs) and protein tyrosine phosphatases (PTPs) in neurodegenerative diseases have attracted increasing attention. Here, we summarize the roles of signaling pathways related to protein tyrosine phosphorylation in the pathogenesis of neurodegenerative diseases and the progress of therapeutic studies targeting PTKs and PTPs that provide theoretical support for future studies on therapeutic strategies for these devastating and important neurodegenerative diseases.
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Affiliation(s)
- Lijuan Shu
- Department of Anesthesiology, West China Hospital, Sichuan University & The Research Units of West China (2018RU012), Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, China
- Department of Obstetrics and Gynecology Intensive Care Unit, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Chunfu Du
- Department of Neurosurgery, Ya'an People's Hospital, Ya'an, China
| | - Yunxia Zuo
- Department of Anesthesiology, West China Hospital, Sichuan University & The Research Units of West China (2018RU012), Chinese Academy of Medical Sciences, West China Hospital, Sichuan University, Chengdu, China
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Wang T, Sun L, Chen C, Zhang Y, He B, Zhang Y, Wang Z, Xue H, Hao Y. Phosphorylation at tyrosine 317 and 508 are crucial for PIK3CA/p110α to promote CRC tumorigenesis. Cell Biosci 2023; 13:164. [PMID: 37689735 PMCID: PMC10493024 DOI: 10.1186/s13578-023-01102-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 08/07/2023] [Indexed: 09/11/2023] Open
Abstract
BACKGROUND PI3K/AKT signaling pathway plays important role in tumorigenesis of human cancer. Protein phosphorylation is crucial for signaling transduction of this pathway. PIK3CA, encoding the catalytic subunit p110α of PI3K complex, is one of the most frequently mutated oncogenes in human cancers. However, phosphorylation sites of PIK3CA/p110α and their underlying mechanism in tumorigenesis are largely unknown. METHODS Tyrosine phosphorylation sites of PIK3CA/p110α are identified with Mass-Spectrum. Crispr/CAS9 strategy is applied to generate Y317F and Y508F mutant knock-in cell clones. The growth and metastasis abilities of cells are evaluated in vitro and in vivo. Phospho-proteomics analysis and Western blots are used to demonstrate downstream signaling pathways of PIK3CA/p110α tyrosine phosphorylation. In vitro kinase assay is applied to identify the kinase of PIK3CA/p110α tyrosine phosphorylation. RESULTS Tyrosine phosphorylation of PIK3CA/p110α is stimulated by growth factors such as EGF, HGF and PDGF. Two tyrosine residues, Y317 and Y508, are identified on PIK3CA/p110α. Either Y317 or Y508 phosphorylation is essential for tumorigenesis of CRC. Mutation at Y317 of p110α reduces the proliferation, migration, and invasion of cancer cells through Src-MLC2 pathway, while mutation at Y508 of p110α impairs AKT signaling. Moreover, Src interacts with and phosphorylates p110α. CONCLUSIONS PIK3CA/p110α phosphorylation at Y317 and Y508 play important role in tumorigenesis of colorectal cancer through two independent pathways.
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Affiliation(s)
- Ting Wang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200032, China
| | - Longci Sun
- Department of Gastrointestinal Surgery, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200127, China
| | - Chengkun Chen
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200032, China
| | - Yingchao Zhang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200032, China
| | - Baoyu He
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200032, China
- Department of Laboratory Medicine, Affiliated Hospital of Jining Medical University, Jining Medical University, Jining, 272029, Shandong, China
| | - Yanhua Zhang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200032, China
| | - Zhenghe Wang
- Department of Genetics and Genome Sciences, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH, 44106, USA
- Case Comprehensive Cancer Center, School of Medicine, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH, 44106, USA
| | - Hanbing Xue
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Renji Hospital, School of Medicine, Ministry of Health, Shanghai Jiao Tong University, Shanghai, 200127, China.
| | - Yujun Hao
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200032, China.
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Mathew D, Barillas-Cerritos J, Nedeljkovic-Kurepa A, Abraham M, Taylor MD, Deutschman CS. Phosphorylation of insulin receptor substrates (IRS-1 and IRS-2) is attenuated following cecal ligation and puncture in mice. Mol Med 2023; 29:106. [PMID: 37550630 PMCID: PMC10408057 DOI: 10.1186/s10020-023-00703-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 07/18/2023] [Indexed: 08/09/2023] Open
Abstract
BACKGROUND Sepsis is characterized as an insulin resistant state. However, the effects of sepsis on insulin's signal transduction pathway are unknown. The molecular activity driving insulin signaling is controlled by tyrosine phosphorylation of the insulin receptor β-subunit (IRβ) and of insulin receptor substrate molecules (IRS) -1 and IRS-2. HYPOTHESIS Cecal ligation and puncture (CLP) attenuates IRβ, IRS-1 and IRS-2 phosphorylation. METHODS IACUC-approved studies conformed to ARRIVE guidelines. CLP was performed on C57BL/6 mice; separate cohorts received intraperitoneal insulin at baseline (T0) or at 23 or 47 h. post-CLP, 1 h before mice were euthanized. We measured levels of (1) glucose and insulin in serum, (2) IRβ, IRS-1 and IRS-2 in skeletal muscle and liver homogenate and (3) phospho-Irβ (pIRβ) in liver and skeletal muscle, phospho-IRS-1 (pIRS-1) in skeletal muscle and pIRS-2 in liver. Statistical significance was determined using ANOVA with Sidak's post-hoc correction. RESULTS CLP did not affect the concentrations of IRβ, IRS-1or IRS-2 in muscle or liver homogenate or of IRS-1 in liver. Muscle IRS-1 concentration at 48 h. post-CLP was higher than at T0. Post-CLP pIRS-1 levels in muscle and pIRβ and pIRS-2 levels in liver were indistinguishable from T0 levels. At 48 h. post-CLP pIRβ levels in muscle were higher than at T0. Following insulin administration, the relative abundance of pIRβ in muscle and liver at T0 and at both post-CLP time points was significantly higher than abundance in untreated controls. In T0 controls, the relative abundance of pIRS-1 in muscle and of pIRS-2 in liver following insulin administration was higher than in untreated mice. However, at both post-CLP time points, the relative abundance of pIRS-1 in muscle and of pIRS-2 in liver following insulin administration was not distinguishable from the abundance in untreated mice at the same time point. Serum glucose concentration was significantly lower than T0 at 24 h., but not 48 h., post-CLP. Glucose concentration was lower following insulin administration to T0 mice but not in post-CLP animals. Serum insulin levels were significantly higher than baseline at both post-CLP time points. CONCLUSIONS CLP impaired insulin-induced tyrosine phosphorylation of both IRS-1 in muscle and IRS-2 in liver. These findings suggest that the molecular mechanism underlying CLP-induced insulin resistance involves impaired IRS-1/IRS-2 phosphorylation.
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Affiliation(s)
- Deepa Mathew
- Department of Pediatrics, Cohen Children's Medical Center, Lake Success, NY, USA
- Institute for Molecular Medicine, Feinstein Institutes for Medical Research, Room 3140, 350 Community Dr, Manhasset, NY, 11030, USA
| | - Julia Barillas-Cerritos
- Department of Pediatrics, Cohen Children's Medical Center, Lake Success, NY, USA
- Institute for Molecular Medicine, Feinstein Institutes for Medical Research, Room 3140, 350 Community Dr, Manhasset, NY, 11030, USA
- Pediatric Endocrinology, Metabolism and Diabetes, Winthrop Pediatrics Associates, Mineola, NY, USA
| | - Ana Nedeljkovic-Kurepa
- Department of Pediatrics, Cohen Children's Medical Center, Lake Success, NY, USA
- Institute for Molecular Medicine, Feinstein Institutes for Medical Research, Room 3140, 350 Community Dr, Manhasset, NY, 11030, USA
| | - Mabel Abraham
- Department of Pediatrics, Cohen Children's Medical Center, Lake Success, NY, USA
- Institute for Molecular Medicine, Feinstein Institutes for Medical Research, Room 3140, 350 Community Dr, Manhasset, NY, 11030, USA
| | - Matthew D Taylor
- Department of Pediatrics, Cohen Children's Medical Center, Lake Success, NY, USA
- Institute for Molecular Medicine, Feinstein Institutes for Medical Research, Room 3140, 350 Community Dr, Manhasset, NY, 11030, USA
- Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA
| | - Clifford S Deutschman
- Department of Pediatrics, Cohen Children's Medical Center, Lake Success, NY, USA.
- Institute for Molecular Medicine, Feinstein Institutes for Medical Research, Room 3140, 350 Community Dr, Manhasset, NY, 11030, USA.
- Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA.
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11
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Mostek-Majewska A, Majewska A, Janta A, Ciereszko A. New insights into posttranslational modifications of proteins during bull sperm capacitation. Cell Commun Signal 2023; 21:72. [PMID: 37046330 PMCID: PMC10091539 DOI: 10.1186/s12964-023-01080-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 02/13/2023] [Indexed: 04/14/2023] Open
Abstract
BACKGROUND Due to the unique nature of spermatozoa, which are transcriptionally and translationally silent, the regulation of capacitation is based on the formation of posttranslational modifications of proteins (PTMs). However, the interactions between different types of PTMs during the capacitation remain unclear. Therefore, we aimed to unravel the PTM-based regulation of sperm capacitation by considering the relationship between tyrosine phosphorylation and reversible oxidative PTMs (oxPTMs), i.e., S-nitrosylation and S-glutathionylation. Since reversible oxPTMs may be closely related to peroxyredoxin (PRDX) activity, the second aim was to verify the role of PRDXs in the PTM-based regulation of capacitation. METHODS Cryopreserved bull sperm were capacitated in vitro with or without PRDX inhibitor. Qualitative parameters of sperm and symptoms characteristic of capacitation were analyzed. Posttranslational protein modifications (S-nitrosylation, S-glutathionylation, tyrosine phosphorylation) were investigated at the cellular level (flow cytometry, fluorescence microscopy) and at the proteomic level (fluorescent gel-based proteomic approach). RESULTS Zona-pellucida binding proteins (ACRBP, SPAM1, ZAN, ZPBP1 and IZUMO4) were particularly rich in reversible oxPTMs. Moreover, numerous flagellar proteins were associated with all analyzed types of PTMs, which indicates that the direction of posttranslational modifications was integrated. Inhibition of PRDX activity during capacitation caused an increase in S-nitrosylation and S-glutathionylation and a decrease in tyrosine phosphorylation. Inhibition of PRDXs caused GAPDHS to undergo S-glutathionylation and the GSTO2 and SOD2 enzymes to undergo denitrosylation. Moreover, PRDX inhibition caused the AKAP proteins to be dephosphorylated. CONCLUSIONS Our research provides evidence that crosstalk occurs between tyrosine phosphorylation and reversible oxPTMs during bull sperm capacitation. This study demonstrates that capacitation triggers S-nitrosylation and S-glutathionylation (and reverse reactions) of zona-pellucida binding proteins, which may be a new important mechanism that determines the interaction between sperms and oocytes. Moreover, TCA-related and flagellar proteins, which are particularly rich in PTMs, may play a key role in sperm capacitation. We propose that the deglutathionylation of ODFs and IZUMO4 proteins is a new hallmark of bull sperm capacitation. The obtained results indicate a relationship between PRDX activity and protein phosphorylation, S-glutathionylation and S-nitrosylation. The activity of PRDXs may be crucial for maintaining redox balance and for providing proper PKA-mediated protein phosphorylation during capacitation. Video Abstract.
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Affiliation(s)
- Agnieszka Mostek-Majewska
- Department of Gamete and Embryo Biology, Institute of Animal Reproduction and Food Research of Polish Academy of Sciences, 10-748, Olsztyn, Poland.
| | - Anna Majewska
- Department of Gamete and Embryo Biology, Institute of Animal Reproduction and Food Research of Polish Academy of Sciences, 10-748, Olsztyn, Poland
| | - Anna Janta
- Department of Gamete and Embryo Biology, Institute of Animal Reproduction and Food Research of Polish Academy of Sciences, 10-748, Olsztyn, Poland
| | - Andrzej Ciereszko
- Department of Gamete and Embryo Biology, Institute of Animal Reproduction and Food Research of Polish Academy of Sciences, 10-748, Olsztyn, Poland
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12
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Rodríguez-Blázquez A, Carabias A, Morán-Vaquero A, de Cima S, Luque-Ortega JR, Alfonso C, Schuck P, Manso JA, Macedo-Ribeiro S, Guerrero C, de Pereda JM. Crk proteins activate the Rap1 guanine nucleotide exchange factor C3G by segregated adaptor-dependent and -independent mechanisms. Cell Commun Signal 2023; 21:30. [PMID: 36737758 PMCID: PMC9896810 DOI: 10.1186/s12964-023-01042-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 01/07/2023] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND C3G is a guanine nucleotide exchange factor (GEF) that activates Rap1 to promote cell adhesion. Resting C3G is autoinhibited and the GEF activity is released by stimuli that signal through tyrosine kinases. C3G is activated by tyrosine phosphorylation and interaction with Crk adaptor proteins, whose expression is elevated in multiple human cancers. However, the molecular details of C3G activation and the interplay between phosphorylation and Crk interaction are poorly understood. METHODS We combined biochemical, biophysical, and cell biology approaches to elucidate the mechanisms of C3G activation. Binding of Crk adaptor proteins to four proline-rich motifs (P1 to P4) in C3G was characterized in vitro using isothermal titration calorimetry and sedimentation velocity, and in Jurkat and HEK293T cells by affinity pull-down assays. The nucleotide exchange activity of C3G over Rap1 was measured using nucleotide-dissociation kinetic assays. Jurkat cells were also used to analyze C3G translocation to the plasma membrane and the C3G-dependent activation of Rap1 upon ligation of T cell receptors. RESULTS CrkL interacts through its SH3N domain with sites P1 and P2 of inactive C3G in vitro and in Jurkat and HEK293T cells, and these sites are necessary to recruit C3G to the plasma membrane. However, direct stimulation of the GEF activity requires binding of Crk proteins to the P3 and P4 sites. P3 is occluded in resting C3G and is essential for activation, while P4 contributes secondarily towards complete stimulation. Tyrosine phosphorylation of C3G alone causes marginal activation. Instead, phosphorylation primes C3G lowering the concentration of Crk proteins required for activation and increasing the maximum activity. Unexpectedly, optimal activation also requires the interaction of CrkL-SH2 domain with phosphorylated C3G. CONCLUSION Our study revealed that phosphorylation of C3G by Src and Crk-binding form a two-factor mechanism that ensures tight control of C3G activation. Additionally, the simultaneous SH2 and SH3N interaction of CrkL with C3G, required for the activation, reveals a novel adaptor-independent function of Crk proteins relevant to understanding their role in physiological signaling and their deregulation in diseases. Video abstract.
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Affiliation(s)
- Antonio Rodríguez-Blázquez
- Centro de Investigación del Cáncer and Instituto de Biología Molecular y Celular del Cáncer, Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Salamanca, 37007, Salamanca, Spain
- Instituto de Investigación Biomédica de Salamanca (IBSAL), Salamanca, Spain
| | - Arturo Carabias
- Centro de Investigación del Cáncer and Instituto de Biología Molecular y Celular del Cáncer, Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Salamanca, 37007, Salamanca, Spain
- Structural Molecular Biology Group, Novo Nordisk Foundation Centre for Protein Research, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3-B, 2200, Copenhagen N, Denmark
| | - Alba Morán-Vaquero
- Centro de Investigación del Cáncer and Instituto de Biología Molecular y Celular del Cáncer, Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Salamanca, 37007, Salamanca, Spain
- Instituto de Investigación Biomédica de Salamanca (IBSAL), Salamanca, Spain
| | - Sergio de Cima
- Centro de Investigación del Cáncer and Instituto de Biología Molecular y Celular del Cáncer, Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Salamanca, 37007, Salamanca, Spain
| | - Juan R Luque-Ortega
- Centro de Investigaciones Biológicas Margarita Salas, CSIC, Ramiro de Maeztu 9, 28040, Madrid, Spain
| | - Carlos Alfonso
- Centro de Investigaciones Biológicas Margarita Salas, CSIC, Ramiro de Maeztu 9, 28040, Madrid, Spain
| | - Peter Schuck
- Laboratory of Dynamics of Macromolecular Assembly, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD, 20892, USA
| | - José Antonio Manso
- IBMC-Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135, Porto, Portugal
- i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135, Porto, Portugal
| | - Sandra Macedo-Ribeiro
- IBMC-Instituto de Biologia Molecular e Celular, Universidade do Porto, 4200-135, Porto, Portugal
- i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135, Porto, Portugal
| | - Carmen Guerrero
- Centro de Investigación del Cáncer and Instituto de Biología Molecular y Celular del Cáncer, Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Salamanca, 37007, Salamanca, Spain
- Instituto de Investigación Biomédica de Salamanca (IBSAL), Salamanca, Spain
- Departamento de Medicina, Universidad de Salamanca, 37007, Salamanca, Spain
| | - José M de Pereda
- Centro de Investigación del Cáncer and Instituto de Biología Molecular y Celular del Cáncer, Consejo Superior de Investigaciones Científicas (CSIC), Universidad de Salamanca, 37007, Salamanca, Spain.
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13
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Peng HH, Yang HC, Rupa D, Yen CH, Chiu YW, Yang WJ, Luo FJ, Yuan TC. ACK1 upregulated the proliferation of head and neck squamous cell carcinoma cells by promoting p27 phosphorylation and degradation. J Cell Commun Signal 2022; 16:567-578. [PMID: 35247157 PMCID: PMC9733751 DOI: 10.1007/s12079-022-00670-6] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 02/02/2022] [Indexed: 12/24/2022] Open
Abstract
Head and neck squamous cell carcinoma (HNSCC) is a malignancy with a worldwide distribution. Although intensive studies have been made, the underlying oncogenic mechanism of HNSCC requires further investigation. In this study, we examined the oncogenic role of activated Cdc42-associated kinase 1 (ACK1), an oncogenic tyrosine kinase, in regulating the proliferation of HNSCC cells and its underlying molecular mechanism. Results from immunohistochemical studies revealed that ACK1 was highly expressed in HNSCC tumors, with 77% (77/100) of tumors showing a high ACK1 immunoreactivity compared to 40% (8/20) of normal mucosa. Knockdown of ACK1 expression in HNSCC cells resulted in elevated p27 expression, reduced cell proliferation, and G1-phase cell cycle arrest. Rescue of ACK1 expression in the ACK1-knockdown cells suppressed p27 expression and restored cell proliferation. Compared to ACK1-knockdown cells, ACK1-rescued cells exhibited a restored p27 expression after MG132 treatment and showed an elevated level of ubiquitinated p27. Our data further showed that knockdown of ubiquitin ligase Skp2 resulted in elevated p27 expression. Importantly, the expression of p27(WT), p27(Y74F), or p27(Y89F) in ACK1-overexpressed 293T cells or ACK1-rescued SAS cells showed higher levels of tyrosyl-phosphorylated p27 and interaction with ACK1 or Skp2. However, the expression of p27(Y88F) mutant exhibited a relatively low phosphorylation level and barely bound with ACK1 or Skp2, showing a basal interaction as the control cells. These results suggested that ACK1 is highly expressed in HNSCC tumors and functions to promote cell proliferation by the phosphorylation and degradation of p27 in the Skp2-mediated mechanism.
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Affiliation(s)
- Hsuan-Hsiang Peng
- grid.260567.00000 0000 8964 3950Department of Life Science, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Rd., Shoufeng, Hualien, 974301 Taiwan, Republic of China
| | - Hao-Chin Yang
- grid.260567.00000 0000 8964 3950Department of Life Science, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Rd., Shoufeng, Hualien, 974301 Taiwan, Republic of China
| | - Darius Rupa
- grid.260567.00000 0000 8964 3950Department of Life Science, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Rd., Shoufeng, Hualien, 974301 Taiwan, Republic of China
| | - Chun-Han Yen
- grid.260567.00000 0000 8964 3950Department of Life Science, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Rd., Shoufeng, Hualien, 974301 Taiwan, Republic of China
| | - Ya-Wen Chiu
- grid.260567.00000 0000 8964 3950Department of Life Science, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Rd., Shoufeng, Hualien, 974301 Taiwan, Republic of China
| | - Wei-Jia Yang
- grid.415323.20000 0004 0639 3300Department of Pathology, Mennonite Christian Hospital, Hualien, 970 Taiwan, Republic of China
| | - Fuh-Jinn Luo
- grid.415323.20000 0004 0639 3300Department of Pathology, Mennonite Christian Hospital, Hualien, 970 Taiwan, Republic of China
| | - Ta-Chun Yuan
- grid.260567.00000 0000 8964 3950Department of Life Science, National Dong Hwa University, No. 1, Sec. 2, Da Hsueh Rd., Shoufeng, Hualien, 974301 Taiwan, Republic of China
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Abstract
Src homology 2-containing protein tyrosine phosphatase 2 (SHP2) is a non-receptor protein tyrosine phosphatase ubiquitously expressed mainly in the cytoplasm of several tissues. SHP2 modulates diverse cell signaling events that control metabolism, cell growth, differentiation, cell migration, transcription and oncogenic transformation. It interacts with diverse molecules in the cell, and regulates key signaling events including RAS/ERK, PI3K/AKT, JAK/STAT and PD-1 pathways downstream of several receptor tyrosine kinases (RTKs) upon stimulation by growth factors and cytokines. SHP2 acts as both a phosphatase and a scaffold, and plays prominently oncogenic functions but can be tumor suppressor in a context-dependent manner. It typically acts as a positive regulator of RTKs signaling with some inhibitory functions reported as well. SHP2 expression and activity is regulated by such factors as allosteric autoinhibition, microRNAs, ubiquitination and SUMOylation. Dysregulation of SHP2 expression or activity causes many developmental diseases, and hematological and solid tumors. Moreover, upregulated SHP2 expression or activity also decreases sensitivity of cancer cells to anticancer drugs. SHP2 is now considered as a compelling anticancer drug target and several classes of SHP2 inhibitors with different mode of action are developed with some already in clinical trial phases. Moreover, novel SHP2 substrates and functions are rapidly growing both in cell and cancer. In view of this, we comprehensively and thoroughly reviewed literatures about SHP2 regulatory mechanisms, substrates and binding partners, biological functions, roles in human cancers, and different classes of small molecule inhibitors target this oncoprotein in cancer.
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Affiliation(s)
- Moges Dessale Asmamaw
- Department of Pharmacology, School of Basic Medical Sciences, State Key Laboratory for Esophageal Cancer Prevention and Treatment, Zhengzhou University, Zhengzhou, Henan Province, 450001, People's Republic of China
| | - Xiao-Jing Shi
- Academy of Medical Sciences, Zhengzhou University, Zhengzhou, Henan Province, 450052, People's Republic of China
| | - Li-Rong Zhang
- Department of Pharmacology, School of Basic Medical Sciences, State Key Laboratory for Esophageal Cancer Prevention and Treatment, Zhengzhou University, Zhengzhou, Henan Province, 450001, People's Republic of China.
| | - Hong-Min Liu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, Henan Province, China. .,Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou, Henan Province, 450001, People's Republic of China.
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15
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Chen C, Dai Y, Yang Y, Zhu Z, Zhang Q, An X, Lai F. Lawsonia intracellularis LI0666 is a new EPIYA effector exported by the Yersinia enterocolitica type III secretion system. Vet Res 2022; 53:39. [PMID: 35659762 PMCID: PMC9167531 DOI: 10.1186/s13567-022-01054-9] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 03/04/2022] [Indexed: 11/16/2022] Open
Abstract
Lawsonia intracellularis is the causative agent of proliferative enteropathy. While it harbors genes encoding the entire apparatus required for the type III secretion system (T3SS) and the expression of some of these components has been detected during experimental infection, the identification of L. intracellularis T3SS substrates (effector proteins) has been hampered. The Yersinia T3SS and yeast growth inhibition assays are two important heterologous systems used for the characterization of effector proteins. Bacterial EPIYA effectors are a distinct class of bacterial effectors defined by the presence of EPIYA or the EPIYA-related motif. When delivered into host cells via a T3SS or type IV secretion system, these effectors undergo tyrosine phosphorylation of the EPIYA motif, which enables them to manipulate host cell signaling by promiscuously interacting with multiple SH2 domain-containing proteins. A previous study showed that L. intracellularis LI0666 contains two EPIYA motifs and speculated that this protein could be a T3SS effector. In this study, we show that LI0666 is secreted by Yersinia in a T3SS-dependent manner and inhibits yeast growth. LI0666 is phosphorylated at tyrosine residues in porcine intestinal epithelial cells and in human epithelial cells. Like the archetypal EPIYA effector CagA, the EPIYA-containing region is not required for LI0666 association with yeast and mammalian cell membranes. Our results indicate that LI0666 is an authentic bacterial EPIYA effector. Identification of the tyrosine kinases that are responsible for LI0666 phosphorylation and the SH2 domain-containing host proteins that LI0666 interacts with will help to explore the molecular mechanisms of LI0666 in disease development.
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Affiliation(s)
- Cang Chen
- College of Bioscience and Bioengineering, Jiangxi Key Laboratory for Conservation and Utilization of Fungal Resources, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Yimin Dai
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Yingying Yang
- College of Bioscience and Bioengineering, Jiangxi Key Laboratory for Conservation and Utilization of Fungal Resources, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Zihe Zhu
- College of Bioscience and Bioengineering, Jiangxi Key Laboratory for Conservation and Utilization of Fungal Resources, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Qinghua Zhang
- College of Bioscience and Bioengineering, Jiangxi Key Laboratory for Conservation and Utilization of Fungal Resources, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Xuejiao An
- College of Bioscience and Bioengineering, Jiangxi Key Laboratory for Conservation and Utilization of Fungal Resources, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Fenju Lai
- College of Bioscience and Bioengineering, Jiangxi Key Laboratory for Conservation and Utilization of Fungal Resources, Jiangxi Agricultural University, Nanchang, 330045, China. .,Collaborative Innovation Center of Postharvest Key Technology and Quality Safety of Fruits and Vegetables in Jiangxi Province, Nanchang, Jiangxi, China.
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16
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Shankar S, Bittner ZA, Weber ANR. NLRP3 Phospho-residue Mapping by Phospho Dot Blots. Methods Mol Biol 2022; 2459:93-103. [PMID: 35212958 DOI: 10.1007/978-1-0716-2144-8_10] [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] [Indexed: 06/14/2023]
Abstract
When characterizing posttranslational modifications like phosphorylation, using efficient screening methods to map the phospho sites is essential, especially when dealing with large multi-domain proteins. NLRP3 (the NOD, LRR, and pyrin domain-containing protein 3), which initiates the formation of an NLRP3 inflammasome complex, is regulated posttranslationally by phosphorylation at several Ser and Tyr residues. However, determining sites of modification are not straightforward. For quick and reliable screening of the candidate phospho sites in NLRP3, we use a phospho dot blot assay which we describe here. This technique employs an in vitro kinase assay with a candidate kinase, Bruton's Tyrosine Kinase (BTK), and peptides derived from the region of interest in the protein that contains the potential phosphorylation sites. The reaction containing the phosphorylated peptides is quickly screened by a dot blot where the peptides are blotted with a commercially available anti-phospho-tyrosine antibody. This method can also be adapted to detect modified Ser or Thr residues and is an ideal screening assay to map phospho residues in NLRP3 or other proteins. This can be an initial screening procedure or can be complemented by other approaches such as site directed mutagenesis and by generating phospho site-specific antibodies.
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Affiliation(s)
| | - Zsofia A Bittner
- Department of Immunology, University of Tübingen, Tübingen, Germany
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17
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Zhao M, Finlay D, Kwong E, Liddington R, Viollet B, Sasaoka N, Vuori K. Cell adhesion suppresses autophagy via Src/FAK-mediated phosphorylation and inhibition of AMPK. Cell Signal 2022; 89:110170. [PMID: 34673141 PMCID: PMC8602780 DOI: 10.1016/j.cellsig.2021.110170] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 10/10/2021] [Accepted: 10/11/2021] [Indexed: 01/03/2023]
Abstract
Autophagy is a multi-step process regulated in part by AMP-activated protein kinase (AMPK). Phosphorylation of threonine 172 on the AMPK α-subunit enhances AMPK kinase activity, resulting in activation of downstream signaling. Integrin-mediated cell adhesion activates Src/ Focal Adhesion Kinase (FAK) signaling complex, which regulates multiple cellular processes including cell survival. We show here that Src signaling leads to direct phosphorylation of the AMPK-α subunit on a novel site, tyrosine 179, resulting in suppression of AMPK-T172 phosphorylation and autophagy upon integrin-mediated cell adhesion. By using chemical inhibitors, genetic cell models and targeted mutagenesis, we confirm an important role for Src and FAK in suppressing AMPK signaling and autophagy induced by various additional stimuli, including glucose starvation. Furthermore, we found that autophagy suppression by hydroxychloroquine promotes apoptosis in a cancer cell model that had been treated with Src inhibitors. Our findings reveal a link between the Src/ FAK complex and AMPK/ autophagy regulation, which may play an important role in the maintenance of normal cellular homeostasis and tumor progression.
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Affiliation(s)
- Ming Zhao
- Cancer Center, Sanford Burnham Prebys Medical Discovery Institute, 10901 N. Torrey Pines Road, La Jolla, CA 92037, USA
| | - Darren Finlay
- Cancer Center, Sanford Burnham Prebys Medical Discovery Institute, 10901 N. Torrey Pines Road, La Jolla, CA 92037, USA
| | - Elizabeth Kwong
- Cancer Center, Sanford Burnham Prebys Medical Discovery Institute, 10901 N. Torrey Pines Road, La Jolla, CA 92037, USA
| | - Robert Liddington
- Cancer Center, Sanford Burnham Prebys Medical Discovery Institute, 10901 N. Torrey Pines Road, La Jolla, CA 92037, USA
| | - Benoit Viollet
- Université de Paris, Institut Cochin, CNRS UMR8104, INSERM U1016, Paris, 75014, France
| | - Norio Sasaoka
- Sumitomo Chemical Co., Ltd., 1-98, Kasugadenaka 3-chome, Konohana-ku, Osaka 554-8558, Japan
| | - Kristiina Vuori
- Cancer Center, Sanford Burnham Prebys Medical Discovery Institute, 10901 N. Torrey Pines Road, La Jolla, CA 92037, USA,Correpsonding author.
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Luo J, Zou H, Guo Y, Tong T, Ye L, Zhu C, Deng L, Wang B, Pan Y, Li P. SRC kinase-mediated signaling pathways and targeted therapies in breast cancer. Breast Cancer Res 2022; 24:99. [PMID: 36581908 PMCID: PMC9798727 DOI: 10.1186/s13058-022-01596-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [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: 09/19/2022] [Accepted: 12/17/2022] [Indexed: 12/30/2022] Open
Abstract
Breast cancer (BC) has been ranked the most common malignant tumor throughout the world and is also a leading cause of cancer-related deaths among women. SRC family kinases (SFKs) belong to the non-receptor tyrosine kinase (nRTK) family, which has eleven members sharing similar structure and function. Among them, SRC is the first identified proto-oncogene in mammalian cells. Oncogenic overexpression or activation of SRC has been revealed to play essential roles in multiple events of BC progression, including tumor initiation, growth, metastasis, drug resistance and stemness regulations. In this review, we will first give an overview of SRC kinase and SRC-relevant functions in various subtypes of BC and then systematically summarize SRC-mediated signaling transductions, with particular emphasis on SRC-mediated substrate phosphorylation in BC. Furthermore, we will discuss the progress of SRC-based targeted therapies in BC and the potential future direction.
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Affiliation(s)
- Juan Luo
- grid.511083.e0000 0004 7671 2506Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, No. 628 Zhenyuan Road, Shenzhen, 518107 Guangdong People’s Republic of China
| | - Hailin Zou
- grid.511083.e0000 0004 7671 2506Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, No. 628 Zhenyuan Road, Shenzhen, 518107 Guangdong People’s Republic of China
| | - Yibo Guo
- grid.511083.e0000 0004 7671 2506Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, No. 628 Zhenyuan Road, Shenzhen, 518107 Guangdong People’s Republic of China
| | - Tongyu Tong
- grid.511083.e0000 0004 7671 2506Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, No. 628 Zhenyuan Road, Shenzhen, 518107 Guangdong People’s Republic of China ,grid.511083.e0000 0004 7671 2506Department of Urology, Pelvic Floor Disorders Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, No. 628 Zhenyuan Road, Shenzhen, 518107 Guangdong People’s Republic of China
| | - Liping Ye
- grid.511083.e0000 0004 7671 2506Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, No. 628 Zhenyuan Road, Shenzhen, 518107 Guangdong People’s Republic of China
| | - Chengming Zhu
- grid.511083.e0000 0004 7671 2506Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, No. 628 Zhenyuan Road, Shenzhen, 518107 Guangdong People’s Republic of China
| | - Liang Deng
- grid.511083.e0000 0004 7671 2506Department of General Surgery, The Seventh Affiliated Hospital of Sun Yat-Sen University, No. 628 Zhenyuan Road, Shenzhen, 518107 Guangdong People’s Republic of China
| | - Bo Wang
- grid.511083.e0000 0004 7671 2506Department of Oncology, The Seventh Affiliated Hospital of Sun Yat-Sen University, No. 628 Zhenyuan Road, Shenzhen, 518107 Guangdong People’s Republic of China
| | - Yihang Pan
- grid.511083.e0000 0004 7671 2506Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, No. 628 Zhenyuan Road, Shenzhen, 518107 Guangdong People’s Republic of China ,grid.511083.e0000 0004 7671 2506Guangdong Provincial Key Laboratory of Digestive Cancer Research, The Seventh Affiliated Hospital of Sun Yat-Sen University, No. 628 Zhenyuan Road, Shenzhen, 518107 Guangdong People’s Republic of China
| | - Peng Li
- grid.511083.e0000 0004 7671 2506Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-Sen University, No. 628 Zhenyuan Road, Shenzhen, 518107 Guangdong People’s Republic of China ,grid.511083.e0000 0004 7671 2506Guangdong Provincial Key Laboratory of Digestive Cancer Research, The Seventh Affiliated Hospital of Sun Yat-Sen University, No. 628 Zhenyuan Road, Shenzhen, 518107 Guangdong People’s Republic of China
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19
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Martínez-Martínez E, Tölle R, Donauer J, Gretzmeier C, Bruckner-Tuderman L, Dengjel J. Increased abundance of Cbl E3 ligases alters PDGFR signaling in recessive dystrophic epidermolysis bullosa. Matrix Biol 2021; 103-104:58-73. [PMID: 34706254 DOI: 10.1016/j.matbio.2021.10.004] [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] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 10/01/2021] [Accepted: 10/19/2021] [Indexed: 01/05/2023]
Abstract
In recessive dystrophic epidermolysis bullosa (RDEB), loss of collagen VII, the main component of anchoring fibrils critical for epidermal-dermal cohesion, affects several intracellular signaling pathways and leads to impaired wound healing and fibrosis. In skin fibroblasts, wound healing is also affected by platelet-derived growth factor receptor (PDGFR) signaling. To study a potential effect of loss of collagen VII on PDGFR signaling we performed unbiased disease phosphoproteomics. Whereas RDEB fibroblasts exhibited an overall weaker response to PDGF, Cbl E3 ubiquitin ligases, negative regulators of growth factor signaling, were stronger phosphorylated. This increase in phosphorylation was linked to higher Cbl mRNA and protein levels due to increased TGFβ signaling in RDEB. In turn, increased Cbl levels led to increased PDGFR ubiquitination, internalization, and degradation negatively affecting MAPK and AKT downstream signaling pathways. Thus, our results indicate that elevated TGFβ signaling leads to an attenuated response to growth factors, which contributes to impaired dermal wound healing in RDEB.
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Affiliation(s)
| | - Regine Tölle
- Department of Biology, University of Fribourg, Chemin du Musée 10, Fribourg 1700, Switzerland
| | - Julia Donauer
- Department of Dermatology, Faculty of Medicine, Medical Center-University of Freiburg, Germany
| | - Christine Gretzmeier
- Department of Dermatology, Faculty of Medicine, Medical Center-University of Freiburg, Germany
| | - Leena Bruckner-Tuderman
- Department of Dermatology, Faculty of Medicine, Medical Center-University of Freiburg, Germany
| | - Jörn Dengjel
- Department of Biology, University of Fribourg, Chemin du Musée 10, Fribourg 1700, Switzerland.
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20
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Li N, Kang H, Peng Z, Wang HF, Weng SQ, Zeng XH. Physiologically detectable bisphenol A impairs human sperm functions by reducing protein- tyrosine phosphorylation. Ecotoxicol Environ Saf 2021; 221:112418. [PMID: 34146982 DOI: 10.1016/j.ecoenv.2021.112418] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Revised: 06/06/2021] [Accepted: 06/08/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Bisphenol A (BPA), a widely used plastic monomer and plasticizer, is detectable in blood, urine and semen of a healthy people, with concentrations ranging from 0.1 nM to 10 nM. It has been shown that in vitro exposure of BPA as low as 0.001 nM could significantly inhibited mouse sperm motility and acrosome reaction. However, it is still unclear whether BPA at those physiologically detectable concentration affects human sperm. METHODS The effects of different concentrations of BPA (0, 10-3, 10-2, 10-1, 10, 103 nM) on sperm functions were examined, including human sperm viability, kinematic parameters, hyperactivation and capacitation. RESULTS BPA caused a remarkable decline in human sperm viability, motility and progressive motility, hyperactivation, capacitation and progesterone-induced acrosome reaction. Mechanism studies showed that BPA could suppress the protein tyrosine phosphorylation level of human sperm, but had no effect on sperm calcium signaling. CONCLUSIONS Physiologically detectable concentrations of BPA may impair human sperm functions via suppressing protein tyrosine phosphorylation of human sperm, implying that environmental pollution of BPA might be a factor contributing to male infertility.
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Affiliation(s)
- Na Li
- Clinical Medical Research Center, Yichun People's Hospital, Yichun, Jiangxi 336000, PR China; Institute of Life Science, Nanchang University, Nanchang, Jiangxi 330031, PR China; Laboratory Department, Affiliated Reproductive Hospital of Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi 330031, PR China
| | - Hang Kang
- Institute of Life Science, Nanchang University, Nanchang, Jiangxi 330031, PR China
| | - Zhen Peng
- Clinical Medical Research Center, Yichun People's Hospital, Yichun, Jiangxi 336000, PR China; Institute of Life Science, Nanchang University, Nanchang, Jiangxi 330031, PR China
| | - Hua-Feng Wang
- Institute of Life Science, Nanchang University, Nanchang, Jiangxi 330031, PR China
| | - Shi-Qi Weng
- Institute of Life Science, Nanchang University, Nanchang, Jiangxi 330031, PR China
| | - Xu-Hui Zeng
- Institute of Reproductive Medicine, School of Medicine, Nantong University, Nantong, Jiangsu 226000, PR China; Institute of Life Science, Nanchang University, Nanchang, Jiangxi 330031, PR China.
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21
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Abstract
The non-catalytic region of tyrosine kinase (Nck) family of adaptors, consisting of Nck1 and Nck2, contributes to selectivity and specificity in the flow of cellular information by recruiting components of signaling networks. Known to play key roles in cytoskeletal remodeling, Nck adaptors modulate host cell-pathogen interactions, immune cell receptor activation, cell adhesion and motility, and intercellular junctions in kidney podocytes. Genetic inactivation of both members of the Nck family results in embryonic lethality; however, viability of mice lacking either one of these adaptors suggests partial functional redundancy. In this Cell Science at a Glance and the accompanying poster, we highlight the molecular organization and functions of the Nck family, focusing on key interactions and pathways, regulation of cellular processes, development, homeostasis and pathogenesis, as well as emerging and non-redundant functions of Nck1 compared to those of Nck2. This article thus aims to provide a timely perspective on the biology of Nck adaptors and their potential as therapeutic targets.
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Affiliation(s)
- Briana C. Bywaters
- Department of Veterinary Pathobiology, Texas A&M University, College Station, TX 7783, USA
| | - Gonzalo M. Rivera
- Department of Veterinary Pathobiology, Texas A&M University, College Station, TX 7783, USA
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22
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Wang Z, Zhou H, Yue X, Zhu J, Yang Y, Liu M. An auxiliary binding interface of SHIP2-SH2 for Y292-phosphorylated FcγRIIB reveals diverse recognition mechanisms for tyrosine-phosphorylated receptors involved in different cell signaling pathways. Anal Bioanal Chem 2021; 414:497-506. [PMID: 34021368 DOI: 10.1007/s00216-021-03373-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 04/16/2021] [Accepted: 04/23/2021] [Indexed: 12/27/2022]
Abstract
SH2 domain-containing inositol 5-phosphatase 2 (SHIP2) plays an essential role in regulating phosphatidylinositol level in human cell, and is recruited to many phosphotyrosine (pY)-dependent signal transduction pathways by the SH2 domain. In immunity signaling, immunoreceptor FcγRIIB binds to SHIP2-SH2 via its Y292-phosphorylated immunoreceptor tyrosine-based inhibitory motif (ITIM) and transmits inhibitory signal, which regulates B cell and neuronal cell activity and is associated with immune diseases and Alzheimer's disease. To date, the interaction between SHIP2 and FcγRIIB has not been analyzed from a structural point of view. Here, the binding of SHIP2-SH2 with Y292-phosphorylated FcγRIIB-ITIM was analyzed using NMR spectroscopy. The results demonstrated that SHIP2-SH2 mainly utilizes two regions including a pY-binding pocket and a specificity pocket formed by βD, βE, and EF-loop, to bind with FcγRIIB-ITIM in high affinity. In addition to the two regions, the BG-loop of SHIP2-SH2 functions as an auxiliary interface enhancing affinity. By comparing the binding of SHIP2-SH2 with ligands from FcγRIIB and c-MET, a hepatocyte growth factor receptor associated with tumorigenesis, significant differences in interface and affinity were found, suggesting that SHIP2-SH2 applies diverse patterns for binding to different ligand proteins. Moreover, S49, S51, and R70 of SHIP2 were identified to mediate the binding of both FcγRIIB and c-MET, while R28 and Q107 were found to only participate in the binding of c-MET and FcγRIIB respectively. Taken together, this study reveals the diverse mechanisms of SHIP2-SH2 for recognizing different ligands, and provides important clues for selectively manipulating various signaling pathways and specific drug design.
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Affiliation(s)
- Zi Wang
- State Key Laboratory of Magnetic Resonance and Atomic Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences - Wuhan National Laboratory for Optoelectronics, Wuhan, 430071, Hubei, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Heng Zhou
- State Key Laboratory of Magnetic Resonance and Atomic Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences - Wuhan National Laboratory for Optoelectronics, Wuhan, 430071, Hubei, China.,Department of Chemistry, College of Science, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Xiali Yue
- Department of Chemistry, College of Science, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Jiang Zhu
- State Key Laboratory of Magnetic Resonance and Atomic Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences - Wuhan National Laboratory for Optoelectronics, Wuhan, 430071, Hubei, China
| | - Yunhuang Yang
- State Key Laboratory of Magnetic Resonance and Atomic Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences - Wuhan National Laboratory for Optoelectronics, Wuhan, 430071, Hubei, China. .,University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Maili Liu
- State Key Laboratory of Magnetic Resonance and Atomic Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences - Wuhan National Laboratory for Optoelectronics, Wuhan, 430071, Hubei, China. .,University of Chinese Academy of Sciences, Beijing, 100049, China.
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23
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Nishino T, Oshika T, Kyan M, Konishi H. Effect of the glycine-rich domain in GAREM2 on its unique subcellular localization upon EGF stimulation. Cell Mol Biol Lett 2021; 26:16. [PMID: 33931009 PMCID: PMC8086153 DOI: 10.1186/s11658-021-00260-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 03/11/2021] [Accepted: 04/21/2021] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND In mammals, there are two subtypes of Grb2-associated regulator of Erk/MAPK (GAREM), an adaptor protein that functions downstream of the cell growth factor receptor. GAREM1 is ubiquitously expressed, whereas GAREM2 is mainly expressed in the brain. However, the precise mechanism of the translocation of each GAREM subtype in growth factor-stimulated cells is still unclear. METHODS In this study, immunofluorescence staining with specific antibodies against each GAREM subtype and time-lapse analysis using GFP fusion proteins were used to analyze the subcellular localization of each GAREM subtype in a cell growth stimulus-dependent manner. We also biochemically analyzed the correlation between its subcellular localization and tyrosine phosphorylation of GAREM2. RESULTS We found that endogenously and exogenously expressed GAREM2 specifically aggregated and formed granules in NGF-stimulated PC-12 cells and in EGF-stimulated COS-7 cells. Based on the observed subcellular localizations of chimeric GAREM1 and GAREM2 proteins, a glycine-rich region, which is present only in GAREM2, is required for the observed granule formation. This region also regulates the degree of EGF-stimulation-dependent tyrosine phosphorylation of GAREM2. CONCLUSIONS Our results, showing that aggregation of GAREM2 in response to EGF stimulation is dependent on a glycine-rich region, suggest that GAREM2 aggregation may be involved in neurodegenerative diseases.
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Affiliation(s)
- Tasuku Nishino
- Faculty of Life and Environmental Sciences, Prefectural University of Hiroshima, Shobara, Hiroshima, 727-0023, Japan
| | - Tsuyoshi Oshika
- Division of Bioscience and Biotechnology Department of Agricultural and Life Sciences, Faculty of Agriculture, Shinshu University, 8304 Minamiminowa, Nagano, 399-4598, Japan
| | - Moriatsu Kyan
- Division of Bioscience and Biotechnology Department of Agricultural and Life Sciences, Faculty of Agriculture, Shinshu University, 8304 Minamiminowa, Nagano, 399-4598, Japan
| | - Hiroaki Konishi
- Division of Bioscience and Biotechnology Department of Agricultural and Life Sciences, Faculty of Agriculture, Shinshu University, 8304 Minamiminowa, Nagano, 399-4598, Japan.
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24
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Sáez-Espinosa P, López-Huedo A, Robles-Gómez L, Huerta-Retamal N, Aizpurua J, Gómez-Torres MJ. Characterization of Human Spermatic Subpopulations by ConA-Binding Sites and Tyrosine Phosphorylation during in vitro Capacitation and Acrosome Reaction. Cells Tissues Organs 2021; 210:1-9. [PMID: 33873194 DOI: 10.1159/000513275] [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] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 11/20/2020] [Indexed: 11/19/2022] Open
Abstract
Spermatozoa capacitation is a time-dependent physiological process essential for acquiring the fertilizing capacity. In this context, reorganization of spermatozoa surface sugars and tyrosine phosphorylation are some of the most important biochemical changes involved in capacitation. However, the relationship between these 2 biomarkers remains poorly defined. By cytofluorescence we simultaneously characterized the head concanavalin A (ConA)-binding sites and the flagellar tyrosine phosphorylation before capacitation, during different capacitation times (1 and 4 h), and after acrosome reaction induction in human spermatozoa. The results showed a strong connection between ConA-label patterns and tyrosine phosphorylation according to the spermatozoa capacitation time and acrosomal status. Specifically, the spermatozoa subpopulation with phosphotyrosine presented proper sugar location (label in acrosomal and postacrosomal region) just after 1 h of capacitation, while cells without phosphotyrosine needed 4 h to do it. Moreover, after induction of spermatozoa acrosome reaction, phosphorylation was significantly correlated (p < 0.05) with the relocation of ConA-binding residues to the equatorial region, regardless of capacitation time. Overall, these observations provide novel insights regarding spermatozoa subpopulations based on essential physiological events like capacitation and acrosome reaction, which could have potential implications in the improvement of spermatozoa selection techniques.
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Affiliation(s)
- Paula Sáez-Espinosa
- Department of Biotechnology, Faculty of Science, University of Alicante, Alicante, Spain
| | - Alba López-Huedo
- Department of Biotechnology, Faculty of Science, University of Alicante, Alicante, Spain
| | - Laura Robles-Gómez
- Department of Biotechnology, Faculty of Science, University of Alicante, Alicante, Spain
| | - Natalia Huerta-Retamal
- Department of Biotechnology, Faculty of Science, University of Alicante, Alicante, Spain
| | - Jon Aizpurua
- IVF Spain, Reproductive Medicine, Alicante, Spain.,Human Fertility Cathedra, University of Alicante, Alicante, Spain
| | - María José Gómez-Torres
- Department of Biotechnology, Faculty of Science, University of Alicante, Alicante, Spain.,Human Fertility Cathedra, University of Alicante, Alicante, Spain
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25
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Abstract
Caveolin-1 (CAV1) has long been implicated in cancer progression, and while widely accepted as an oncogenic protein, CAV1 also has tumor suppressor activity. CAV1 was first identified in an early study as the primary substrate of Src kinase, a potent oncoprotein, where its phosphorylation correlated with cellular transformation. Indeed, CAV1 phosphorylation on tyrosine-14 (Y14; pCAV1) has been associated with several cancer-associated processes such as focal adhesion dynamics, tumor cell migration and invasion, growth suppression, cancer cell metabolism, and mechanical and oxidative stress. Despite this, a clear understanding of the role of Y14-phosphorylated pCAV1 in cancer progression has not been thoroughly established. Here, we provide an overview of the role of Src-dependent phosphorylation of tumor cell CAV1 in cancer progression, focusing on pCAV1 in tumor cell migration, focal adhesion signaling and metabolism, and in the cancer cell response to stress pathways characteristic of the tumor microenvironment. We also discuss a model for Y14 phosphorylation regulation of CAV1 effector protein interactions via the caveolin scaffolding domain.
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26
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Han Z, Zhang Z, Guan Y, Chen B, Yu M, Zhang L, Fang J, Gao Y, Guo Z. New insights into Vitamin C function: Vitamin C induces JAK2 activation through its receptor-like transporter SVCT2. Int J Biol Macromol 2021; 173:379-398. [PMID: 33484802 DOI: 10.1016/j.ijbiomac.2021.01.120] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 01/16/2021] [Accepted: 01/17/2021] [Indexed: 02/06/2023]
Abstract
Vitamin C (VitC) is a requisite nutrient for humans and other primates. Extensive research continuously illustrates the applications of VitC in promoting cell reprogramming, fine-tuning embryonic stem cell function, and fighting diseases. Given its chemical reduction property, VitC predominantly acts as an antioxidant to reduce reactive oxygen species (ROS) and as a cofactor for certain dioxygenases involved in epigenetic regulation. Here, we propose that VitC is also a bio-signaling molecule based on the finding that sodium-dependent VitC transporter (SVCT) 2 is a novel receptor-like transporter of VitC that possesses dual activities in mediating VitC uptake and Janus kinase (JAK) 2/signal transducer and activator of transcription (STAT) 2 signaling pathway. Through interaction, SVCT2 induces JAK2 phosphorylation while transporting VitC into cells. Activated JAK2 phosphorylates the C-terminus of SVCT2, resulting in the recruitment and activation of STAT2. As a highlight, our results suggest that the activation of JAK2 synergistically promotes regulation of VitC in ROS scavenging and epigenetic modifications through phosphorylating pyruvate dehydrogenase kinase 1, ten-eleven translocation enzyme 3, and histone H3 Tyr41. Furthermore, VitC-activated JAK2 exhibits bidirectional effects in regulating cell pluripotency and differentiation. Our results thus reveal that the SVCT2-mediated JAK2 activation facilitates VitC functions in a previously unknown manner.
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Affiliation(s)
- Zhuo Han
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, PR China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, PR China
| | - Zihan Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, PR China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, PR China
| | - Yian Guan
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, PR China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, PR China
| | - Bingxue Chen
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, PR China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, PR China
| | - Mengying Yu
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, PR China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, PR China
| | - Lei Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, PR China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, PR China
| | - Jingshuai Fang
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, PR China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, PR China
| | - Yuan Gao
- College of Life Science and Technology, Gansu Agricultural University, Lanzhou 730070, Gansu, PR China
| | - Zekun Guo
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi, PR China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Northwest A&F University, Yangling 712100, Shaanxi, PR China.
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27
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Liu Q, He L, Li S, Li F, Deng G, Huang X, Yang M, Xiao Y, Chen X, Ouyang Y, Chen J, Wu X, Wang X, Song L, Lin C. HOMER3 facilitates growth factor-mediated β-Catenin tyrosine phosphorylation and activation to promote metastasis in triple negative breast cancer. J Hematol Oncol 2021; 14:6. [PMID: 33407765 PMCID: PMC7788750 DOI: 10.1186/s13045-020-01021-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 12/07/2020] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND HOMER family scaffolding proteins (HOMER1-3) play critical roles in the development and progression of human disease by regulating the assembly of signal transduction complexes in response to extrinsic stimuli. However, the role of HOMER protein in breast cancer remains unclear. METHODS HOMER3 expression was examined by immunohistochemistry in breast cancer patient specimens, and its significance in prognosis was assessed by Kaplan-Meier survival analysis. The effects of HOMER3 in growth factor-induced β-Catenin activation were analyzed by assays such as TOP/FOP flash reporter, tyrosine phosphorylation assay and reciprocal immunoprecipitation (IP) assay. Role of HOMER3 in breast cancer metastasis was determined by cell function assays and mice tumor models. RESULTS Herein, we find that, among the three HOMER proteins, HOMER3 is selectively overexpressed in the most aggressive triple negative breast cancer (TNBC) subtype, and significantly correlates with earlier tumor metastasis and shorter patient survival. Mechanismly, HOMER3 interacts with both c-Src and β-Catenin, thus providing a scaffolding platform to facilitate c-Src-induced β-Catenin tyrosine phosphorylation under growth factor stimulation. HOMER3 promotes β-Catenin nuclear translocation and activation, and this axis is clinically relevant. HOMER3 promotes and is essential for EGF-induced aggressiveness and metastasis of TNBC cells both in vitro and in vivo. CONCLUSION These findings identify a novel role of HOMER3 in the transduction of growth factor-mediated β-Catenin activation and suggest that HOMER3 might be a targetable vulnerability of TNBC.
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Affiliation(s)
- Qinghua Liu
- State Key Laboratory of Oncology in Southern China and Department of Experimental Research, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, 510060, China
| | - Lixin He
- State Key Laboratory of Oncology in Southern China and Department of Experimental Research, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Siqi Li
- State Key Laboratory of Oncology in Southern China and Department of Experimental Research, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
- Department of Breast Surgery, Cancer Center, Sun Yat-sen University, Guangzhou, 510060, China
| | - Fengyan Li
- Department of Radiation Oncology, Cancer Center, Sun Yat-sen University, Guangzhou, 510060, China
| | - Guangzheng Deng
- Department of Breast Surgery, Cancer Center, Sun Yat-sen University, Guangzhou, 510060, China
| | - Xinjian Huang
- State Key Laboratory of Oncology in Southern China and Department of Experimental Research, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
- Department of Breast Surgery, Cancer Center, Sun Yat-sen University, Guangzhou, 510060, China
| | - Muwen Yang
- State Key Laboratory of Oncology in Southern China and Department of Experimental Research, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Yunyun Xiao
- State Key Laboratory of Oncology in Southern China and Department of Experimental Research, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Xiangfu Chen
- State Key Laboratory of Oncology in Southern China and Department of Experimental Research, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Ying Ouyang
- State Key Laboratory of Oncology in Southern China and Department of Experimental Research, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Jinxin Chen
- State Key Laboratory of Oncology in Southern China and Department of Experimental Research, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Xuxia Wu
- State Key Laboratory of Oncology in Southern China and Department of Experimental Research, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Xi Wang
- State Key Laboratory of Oncology in Southern China and Department of Experimental Research, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
- Department of Breast Surgery, Cancer Center, Sun Yat-sen University, Guangzhou, 510060, China
| | - Libing Song
- State Key Laboratory of Oncology in Southern China and Department of Experimental Research, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Chuyong Lin
- State Key Laboratory of Oncology in Southern China and Department of Experimental Research, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China.
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Kushawaha B, Yadav RS, Swain DK, Rai PK, Garg SK. Mercury-Induced Inhibition of Tyrosine Phosphorylation of Sperm Proteins and Altered Functional Dynamics of Buck Spermatozoa: an In Vitro Study. Biol Trace Elem Res 2020; 198:478-492. [PMID: 32064576 DOI: 10.1007/s12011-020-02077-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 02/11/2020] [Indexed: 12/20/2022]
Abstract
Present study was undertaken on buck spermatozoa to investigate the effect of mercuric chloride on functional dynamics of buck spermatozoa. Four different concentrations (0.031, 0.125, 0.25 and 1.25 μg/mL) of mercuric chloride, which were 1/40th, 1/10th, 1/5th and equivalent to the LC50 value of HgCl2, were selected for studying their effect following in vitro exposure for 15 min and 3 h. Exposure of spermatozoa to 0.031 μg/mL mercuric chloride for 3 h resulted in significant (p < 0.05) decrease in sperm motility, sperm having intact membrane, intact acrosome and high mitochondrial trans-membrane potential. However, following exposure to higher concentrations (0.25, 1.25 μg/mL), similar results were observed even after 15 min of exposure. HgCl2 significantly (p < 0.05) increased the levels of malondialdehyde and reactive oxygen species and significantly (p < 0.05) decreased total antioxidant capacity and superoxide dismutase activity in spermatozoa within 15 min of exposure. Mercuric chloride-treated spermatozoa did not show capacitation, rather exhibited spontaneous acrosome reaction along with significant increase in intracellular Ca2+ and cAMP levels. Immuno-blotting of semen samples of control and 0.031 μg/mL mercury-treated groups showed low intensity bands of p55, p70, p80, p105 and p190 kDa tyrosine phosphorylation proteins while higher concentration-treated groups showed no such bands. Our findings evidently suggest that mercuric chloride even at 0.031 μg/mL adversely affected sperm functions, inhibited tyrosine phosphorylation proteins and capacitation due to oxidative stress. Spontaneous acrosome reaction (AR) in mercury-treated spermatozoa may possibly be due to increase in intracellular Ca2+ and cAMP levels, and capacitation failure may be due to inhibition of tyrosine phosphorylation of proteins.
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Affiliation(s)
- Bhawna Kushawaha
- College of Biotechnology, U.P. Pandit Deendayal Upadhayaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan (DUVASU), Mathura, Uttar Pradesh, 281001, India.
- College of Veterinary Science and Animal Husbandry, U.P. Pandit Deendayal Upadhayaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan (DUVASU), Mathura, Uttar Pradesh, 281001, India.
| | - Rajkumar Singh Yadav
- Department of Pharmacology and Toxicology, U.P. Pandit Deendayal Upadhayaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan (DUVASU), Mathura, Uttar Pradesh, 281001, India
- College of Veterinary Science and Animal Husbandry, U.P. Pandit Deendayal Upadhayaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan (DUVASU), Mathura, Uttar Pradesh, 281001, India
| | - Dilip Kumar Swain
- Department of Veterinary Physiology, U.P. Pandit Deendayal Upadhayaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan (DUVASU), Mathura, Uttar Pradesh, 281001, India
- College of Veterinary Science and Animal Husbandry, U.P. Pandit Deendayal Upadhayaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan (DUVASU), Mathura, Uttar Pradesh, 281001, India
| | | | - Satish Kumar Garg
- Department of Pharmacology and Toxicology, U.P. Pandit Deendayal Upadhayaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan (DUVASU), Mathura, Uttar Pradesh, 281001, India
- College of Veterinary Science and Animal Husbandry, U.P. Pandit Deendayal Upadhayaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan (DUVASU), Mathura, Uttar Pradesh, 281001, India
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Kritaniya D, Yadav S, Swain DK, Reddy AV, Dhariya R, Yadav B, Anand M, Nigam R. Freezing-thawing induces deprotamination, cryocapacitation-associated changes; DNA fragmentation; and reduced progesterone sensitivity in buck spermatozoa. Anim Reprod Sci 2020; 223:106628. [PMID: 33128908 DOI: 10.1016/j.anireprosci.2020.106628] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 12/27/2019] [Revised: 10/08/2020] [Accepted: 10/09/2020] [Indexed: 01/20/2023]
Abstract
In the present study, there was evaluation of cryocapacitation-associated changes, apoptotic-like changes, deprotamination, total antioxidant capacity (TAC), and in vitro sperm functional attributes in Barbari bucks after freezing-thawing. The correlation between deprotamination and sperm functional characteristics was established. Using immunoblotting procedures, there was detection of the presence of a single 28-kDa protein band corresponding to protamine-1. The localization in the head region of the spermatozoa was further validated by an immunofluorescence test. Capacitated (B-) and acrosome-reacted (AR-) pattern spermatozoa, spermatozoa with the externalization of phosphatidylserine and a relatively lesser mitochondrial transmembrane potential, and deprotamination and DNA fragmentation was greater (P < 0.05) after freezing-thawing and indicated there were cryocapacitation- and apoptotic-like changes, respectively. Furthermore, the detection of phosphorylation of tyrosine-containing proteins with use of immunoblotting and immunofluorescence procedures confirmed there were cryocapacitation-like changes in the buck spermatozoa after freezing-thawing. Total antioxidant capacity (TAC), in vitro thermal resistance response, Vanguard distance, progesterone sensitivity, and in vitro capacitation response were less (P < 0.05) in the spermatozoa after freezing-thawing compared with spermatozoa after initial dilution and equilibration. Deprotamination (chromomycin A3-positive cells, CMA3+) and DNA fragmentation (TUNEL+ve) were positively correlated with B- and AR-pattern spermatozoa, while other values for other variables were negatively correlated. In conclusion, the results of this study indicated there was protamine-1 in buck spermatozoa and after freezing-thawing there was a loss of protamine-1 combined with cryocapacitation-associated changes and apoptotic-like changes in buck spermatozoa. Spermatozoa deprotamination might be attributed to increased DNA fragmentation, resulting in compromised fertilizing capacity of buck spermatozoa.
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Affiliation(s)
- Deepika Kritaniya
- College of Biotechnology, U.P. Pandit Deendayal Upadhyaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan, Mathura, 281001, Uttar Pradesh, India
| | - Sarvajeet Yadav
- Department of Veterinary Physiology, U.P. Pandit Deendayal Upadhyaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan, Mathura, 281001, Uttar Pradesh, India; College of Veterinary Science & Animal Husbandry, U.P. Pandit Deendayal Upadhyaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan, Mathura, 281001, Uttar Pradesh, India
| | - Dilip Kumar Swain
- Department of Veterinary Physiology, U.P. Pandit Deendayal Upadhyaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan, Mathura, 281001, Uttar Pradesh, India; College of Veterinary Science & Animal Husbandry, U.P. Pandit Deendayal Upadhyaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan, Mathura, 281001, Uttar Pradesh, India.
| | - A Vidyasagar Reddy
- Department of Veterinary Physiology, U.P. Pandit Deendayal Upadhyaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan, Mathura, 281001, Uttar Pradesh, India; College of Veterinary Science & Animal Husbandry, U.P. Pandit Deendayal Upadhyaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan, Mathura, 281001, Uttar Pradesh, India
| | - Rahul Dhariya
- College of Biotechnology, U.P. Pandit Deendayal Upadhyaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan, Mathura, 281001, Uttar Pradesh, India
| | - Brijesh Yadav
- Department of Veterinary Physiology, U.P. Pandit Deendayal Upadhyaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan, Mathura, 281001, Uttar Pradesh, India; College of Veterinary Science & Animal Husbandry, U.P. Pandit Deendayal Upadhyaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan, Mathura, 281001, Uttar Pradesh, India
| | - Mukul Anand
- Department of Veterinary Physiology, U.P. Pandit Deendayal Upadhyaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan, Mathura, 281001, Uttar Pradesh, India; College of Veterinary Science & Animal Husbandry, U.P. Pandit Deendayal Upadhyaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan, Mathura, 281001, Uttar Pradesh, India
| | - Rajesh Nigam
- Department of Biochemistry, U.P. Pandit Deendayal Upadhyaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan, Mathura, 281001, Uttar Pradesh, India; College of Veterinary Science & Animal Husbandry, U.P. Pandit Deendayal Upadhyaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan, Mathura, 281001, Uttar Pradesh, India
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Gan Z, Cheng J, Chen S, Laghari ZA, Hou J, Xia L, Lu Y, Nie P. Functional characterization of a group II interferon, IFNc in the perciform fish, Nile tilapia (Oreochromis niloticus). Fish Shellfish Immunol 2020; 105:86-94. [PMID: 32599057 DOI: 10.1016/j.fsi.2020.06.036] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 06/12/2020] [Accepted: 06/16/2020] [Indexed: 06/11/2023]
Abstract
Interferons are a family of class II α-helical cytokines playing vital roles in antiviral immune response, and little information is available to date regarding the interferon system of tilapia. In this study, a type I IFN gene, named On-IFNc, was identified in Nile tilapia, Oreochromis niloticus. The predicted protein of On-IFNc contains several structural features known in type I IFNs, and On-IFNc was clustered together with the known IFNc in fish into a separated clade in the phylogenetic tree. On-IFNc gene was constitutively expressed in all tissues examined, with the highest expression level observed in liver, and was rapidly induced in all organs/tissues tested following the stimulation of poly(I:C). In addition, recombinant On-IFNc has been proven to markedly induce the expression of the antiviral effectors, Mx and viperin, the signalling components, STAT1, STAT2, and IRF9, and the transcription factors, IRF3 and IRF7, as well as the tyrosine phosphorylation of STAT1 and STAT2 in fish cells. Furthermore, recombinant On-IFNc has been proven to possess antiviral activity against ISKNV. The present study thus contributes to a better understanding of the functional properties of the type I IFN system in tilapia.
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Affiliation(s)
- Zhen Gan
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518120, China; State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China; College of Fishery, Guangdong Ocean University, Zhanjiang, 524025, China; Guangdong Provincial Engineering Research Center for Aquatic Animal Health Assessment, and Shenzhen Public Service Platform for Evaluation of Marine Economic Animal Seedings, Shenzhen, 518120, China; Shenzhen Dapeng New District Science and Technology Innovation Service Center, Shenzhen, 518120, China
| | - Jun Cheng
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518120, China; College of Fishery, Guangdong Ocean University, Zhanjiang, 524025, China; Guangdong Provincial Engineering Research Center for Aquatic Animal Health Assessment, and Shenzhen Public Service Platform for Evaluation of Marine Economic Animal Seedings, Shenzhen, 518120, China
| | - Shannan Chen
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Zubair Ahmed Laghari
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Jing Hou
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518120, China; State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China; College of Fishery, Guangdong Ocean University, Zhanjiang, 524025, China; Guangdong Provincial Engineering Research Center for Aquatic Animal Health Assessment, and Shenzhen Public Service Platform for Evaluation of Marine Economic Animal Seedings, Shenzhen, 518120, China; Shenzhen Dapeng New District Science and Technology Innovation Service Center, Shenzhen, 518120, China
| | - Liqun Xia
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518120, China; College of Fishery, Guangdong Ocean University, Zhanjiang, 524025, China; Guangdong Provincial Engineering Research Center for Aquatic Animal Health Assessment, and Shenzhen Public Service Platform for Evaluation of Marine Economic Animal Seedings, Shenzhen, 518120, China
| | - Yishan Lu
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518120, China; College of Fishery, Guangdong Ocean University, Zhanjiang, 524025, China; Guangdong Provincial Engineering Research Center for Aquatic Animal Health Assessment, and Shenzhen Public Service Platform for Evaluation of Marine Economic Animal Seedings, Shenzhen, 518120, China.
| | - Pin Nie
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China; School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, Shandong Province, 266109, China.
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Abstract
Somatic mutations in the RAS genes are frequent in human tumors, especially in pancreatic, colorectal, and non-small-cell lung cancers. Such mutations generally decrease the ability of Ras to hydrolyze GTP, maintaining the protein in a constitutively active GTP-bound form that drives uncontrolled cell proliferation. Efforts to develop drugs that target Ras oncoproteins have been unsuccessful. Recent emerging data suggest that Ras regulation is more complex than the scientific community has believed for decades. In this review, we summarize advances in the "textbook" view of Ras activation. We also discuss a novel type of Ras regulation that involves direct phosphorylation and dephosphorylation of Ras tyrosine residues. The discovery that pharmacological inhibition of the tyrosine phosphoprotein phosphatase SHP2 maintains mutant Ras in an inactive state suggests that SHP2 could be a novel drug target for the treatment of Ras-driven human cancers.
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Affiliation(s)
- László Buday
- Institute of Enzymology, Research Centre for Natural Sciences, Budapest, 1117, Hungary.
- Department of Medical Chemistry, Semmelweis University Medical School, Budapest, 1094, Hungary.
| | - Virág Vas
- Institute of Enzymology, Research Centre for Natural Sciences, Budapest, 1117, Hungary
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Kuklina E, Nekrasova I, Glebezdina N. Signaling from membrane semaphorin 4D in T lymphocytes. Mol Immunol 2020; 129:56-62. [PMID: 32948333 DOI: 10.1016/j.molimm.2020.08.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 08/11/2020] [Accepted: 08/14/2020] [Indexed: 11/16/2022]
Abstract
Semaphorin 4D (Sema4D) is widely represented in the immune system in both membrane and soluble form, and controls immune processes through the specific receptors - these are generally accepted views. Here, an alternative way of Sema4D-dependent immunoregulation is presented, suggesting its functioning as a receptor. We have shown that activation of membrane Sema4D induces phosphorylation of Lck/ZAP-70 in intact T lymphocytes and enhances it in stimulated T cells. Since Sema4D is constitutively presented on the membrane of T lymphocytes, and classical Sema4D receptors are highly expressed by antigen-presenting cells, the membrane Sema4D can serve as an obligate costimulatory molecule in T lymphocyte priming or T-dependent B cell activation.
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Affiliation(s)
- Elena Kuklina
- Perm Federal Research Center, Institute of Ecology and Genetics of Microorganisms, Ural Branch of the Russian Academy of Sciences, 614081, Perm, Russia.
| | - Irina Nekrasova
- Perm Federal Research Center, Institute of Ecology and Genetics of Microorganisms, Ural Branch of the Russian Academy of Sciences, 614081, Perm, Russia
| | - Natalia Glebezdina
- Perm Federal Research Center, Institute of Ecology and Genetics of Microorganisms, Ural Branch of the Russian Academy of Sciences, 614081, Perm, Russia
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Bae JW, Kwon HJ, Kim SH, Ma L, Im H, Kim E, Kim MO, Kwon WS. Inhalation of ammonium sulfate and ammonium nitrate adversely affect sperm function. Reprod Toxicol 2020; 96:424-31. [PMID: 32866586 DOI: 10.1016/j.reprotox.2020.08.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 08/19/2020] [Accepted: 08/22/2020] [Indexed: 01/09/2023]
Abstract
Among the components of air pollution in developing countries and Asia, (NH4)2SO4 and NH4NO3 are known as major water-soluble in-organic compounds that cause particulate matter. Several researchers have been reported that the (NH4)2SO4 and NH4NO3 induce abnormal decreases in body weight, as well as pneumotoxic, and immunotoxic. Moreover, while it has been reported that (NH4)2SO4 and NH4NO3 have detrimental effects on reproduction, specific effects on male fertility have not been addressed in depth. Therefore, the present study evaluated the reproductive toxicity of (NH4)2SO4 and NH4NO3 in spermatozoa under the capacitation condition. Results showed that various sperm motion parameters were significantly altered after inhalation of (NH4)2SO4 and NH4NO3. In particular, alterations to a range of motion kinematic parameters and to capacitation status were observed after capacitation. In addition, protein kinase A (PKA) activity and tyrosine phosphorylation were altered by (NH4)2SO4 and NH4NO3 regardless of capacitation. Taken together, our results show that inhalation of (NH4)2SO4 and NH4NO3 may induce adverse effects on male fertility such as sperm motility, motion kinematics, and capacitation status via unusual tyrosine phosphorylation by abnormal PKA activity. Therefore, we suggest that exposure to (NH4)2SO4 and NH4NO3 should be highlighted as a health risk, as it may lead to male reproductive toxicity in humans and animals.
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Abstract
Activation of REarranged during Transfection (RET) proto-oncogene is responsible for various human cancers such as papillary and medullary thyroid carcinomas and non-small cell lung carcinomas. RET activation in these tumors is caused by point mutations or gene rearrangements, resulting in constitutive activation of RET tyrosine kinase. Physiologically, RET is activated by glial cell line-derived neurotrophic factor (GDNF) ligands that bind to coreceptor GDNF family receptor alphas (GFRαs), leading to RET dimerization. GDNF-GFRα1-RET signaling plays crucial roles in the development of the enteric nervous system, kidney and lower urinary tract as well as in spermatogenesis. Intracellular tyrosine phosphorylation in RET and recruitment of adaptor proteins to phosphotyrosines are essential for various biological functions. Significance of intracellular RET signaling pathways activated by GDNF is discussed and summarized in this review.
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Affiliation(s)
- Kumi Kawai
- Department of Pathology, Fujita Health University, 1-98 Kutsukake-cho, Dengakugakubo, Toyoake, 470-1192, Japan
| | - Masahide Takahashi
- International Center for Cell and Gene Therapy, Fujita Health University, 1-98 Kutsukake-cho, Dengakugakubo, Toyoake, 470-1192, Japan. .,Department of Pathology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan.
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Takei GL, Hayashi K. Na +/K +-ATPase α4 regulates sperm hyperactivation while Na +/K +-ATPase α1 regulates basal motility in hamster spermatozoa. Theriogenology 2020; 157:48-60. [PMID: 32799127 DOI: 10.1016/j.theriogenology.2020.06.028] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 06/09/2020] [Accepted: 06/25/2020] [Indexed: 11/20/2022]
Abstract
Recently, it was reported that hamster sperm hyperactivation is regulated by extracellular Na+. Two types of catalytic Na+/K+-ATPase (NKA) α subunits (α1 and α4) are present in spermatozoa. In this work, the contribution of these NKA subunits to the regulation of hamster sperm hyperactivation was investigated using the specific inhibitor ouabain. When 10-6 M ouabain was added to the modified Tyrode's albumin lactate pyruvate medium (mTALP) medium, hyperactivation was significantly inhibited, whereas 10-5-10-4 M ouabain was needed to significantly reduce the amount of motile spermatozoa. When a more detailed analysis of flagellar movement was performed, 10-6 M ouabain suppressed the hyperactivation-associated change in the patterns of flagellar motion without affecting the sliding velocity of microtubules. Since 10-6 M ouabain specifically inhibits the α4 subunit while 10-5-10-4 M ouabain inhibits both the α1 and α4 subunits, these results suggest the α1 subunit is necessary for the maintenance of motility while the α4 subunit is necessary for the hyperactivation-associated change in flagellar movement. Ouabain did not inhibit tyrosine phosphorylation, and activation of tyrosine phosphorylation-dependent signaling had no effect on the inhibition of hyperactivation by ouabain. The immediate recovery of hyperactivation was observed when ouabain was washed out after a 3-h incubation. whereas the administration of ouabain after the onset of hyperactivation significantly inhibited hyperactivation. These results suggest ouabain inhibited hyperactivation in a manner that was independent of time-requiring phosphorylation-mediated signaling.
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Perdomo D, Bubis J. Light or tyrosine phosphorylation recruits retinal rod outer segment proteins to lipid rafts. Biochimie 2020; 177:1-12. [PMID: 32758687 DOI: 10.1016/j.biochi.2020.07.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 05/24/2020] [Revised: 07/22/2020] [Accepted: 07/26/2020] [Indexed: 02/06/2023]
Abstract
Lipid rafts are localized liquid-ordered regions of the plasma membrane that contain high levels of cholesterol and glycosphingolipids, and are resistant to extraction with nonionic detergents. Retinal photoreceptor cells contain detergent-resistant membrane microdomains (DRM), which were isolated here from bovine rod outer segments (ROS) under dark and light conditions. Rhodopsin (R) was present in both DRM and detergent soluble fractions (DSF), and detergent-insoluble ROS rafts were enriched in caveolin 1 (Cav-1) and c-Src. In the dark, arrestin and its 44-kDa truncated form (p44) were present mainly in DSF; however, p44 was translocated to DRM under illumination. Similarly, transducin (T) was mainly present in DSF in the dark, but it was recruited toward the DRM fraction following photolysis. DRM were also prepared in the absence or presence of Mg-ATP, guanosine 5'-3-O-(thio)triphosphate (GTPγS), or both. Although GTPγS released T into DSF in the light, GTPγS-activated T was retained in DRM when Mg2+ and ATP were added. Moreover, T was always tyrosine-phosphorylated under light conditions, which suggested that T phosphorylation prevents its GTPγS-induced release from DRM. In addition, treatment with the tyrosine kinase inhibitor genistein prevented the segregation of T to the rafts. In contrast, no localization difference was seen in the presence of Mg-ATP for Cav-1, c-Src, R and both forms of arrestin. Interestingly, immunoprecipitation assays followed by Western blot analyses under light conditions showed the formation of multimeric complexes containing R, T, c-Src, p44 and Cav-1 in DRM, where T and c-Src were tyrosine-phosphorylated.
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Affiliation(s)
- Deisy Perdomo
- Departamento de Biología Celular, Universidad Simón Bolívar, Valle de Sartenejas, Baruta, Caracas, Venezuela.
| | - José Bubis
- Departamento de Biología Celular, Universidad Simón Bolívar, Valle de Sartenejas, Baruta, Caracas, Venezuela.
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Spalinger MR, Schwarzfischer M, Scharl M. The Role of Protein Tyrosine Phosphatases in Inflammasome Activation. Int J Mol Sci 2020; 21:ijms21155481. [PMID: 32751912 PMCID: PMC7432435 DOI: 10.3390/ijms21155481] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 07/29/2020] [Accepted: 07/29/2020] [Indexed: 12/13/2022] Open
Abstract
Inflammasomes are multi-protein complexes that mediate the activation and secretion of the inflammatory cytokines IL-1β and IL-18. More than half a decade ago, it has been shown that the inflammasome adaptor molecule, ASC requires tyrosine phosphorylation to allow effective inflammasome assembly and sustained IL-1β/IL-18 release. This finding provided evidence that the tyrosine phosphorylation status of inflammasome components affects inflammasome assembly and that inflammasomes are subjected to regulation via kinases and phosphatases. In the subsequent years, it was reported that activation of the inflammasome receptor molecule, NLRP3, is modulated via tyrosine phosphorylation as well, and that NLRP3 de-phosphorylation at specific tyrosine residues was required for inflammasome assembly and sustained IL-1β/IL-18 release. These findings demonstrated the importance of tyrosine phosphorylation as a key modulator of inflammasome activity. Following these initial reports, additional work elucidated that the activity of several inflammasome components is dictated via their phosphorylation status. Particularly, the action of specific tyrosine kinases and phosphatases are of critical importance for the regulation of inflammasome assembly and activity. By summarizing the currently available literature on the interaction of tyrosine phosphatases with inflammasome components we here provide an overview how tyrosine phosphatases affect the activation status of inflammasomes.
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Affiliation(s)
- Marianne R. Spalinger
- Department of Gastroenterology and Hepatology, University Hospital Zurich, 8091 Zurich, Switzerland; (M.S.); (M.S.)
- Correspondence: ; Tel.: +41-44-255-3794
| | - Marlene Schwarzfischer
- Department of Gastroenterology and Hepatology, University Hospital Zurich, 8091 Zurich, Switzerland; (M.S.); (M.S.)
| | - Michael Scharl
- Department of Gastroenterology and Hepatology, University Hospital Zurich, 8091 Zurich, Switzerland; (M.S.); (M.S.)
- Zurich Center for Integrative Human Physiology, University of Zurich, 8006 Zurich, Switzerland
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Abstract
Surface plasmon resonance (SPR) is an important and convenient method for measuring kinetic rate constants of given molecular interactions, equilibrium binding constants at steady state, or determinations of binding stoichiometry. In its traditional setup, SPR requires that one binding partner is tightly immobilized on the surface of a sensor chip either by direct chemical coupling to the surface-coated carboxymethylated dextran matrix or by non-covalent capture to a high-affinity binding partner that is covalently linked to the surface. The latter design of the sensor surface is highly advantageous compared to the direct chemical coupling as this setup ensures a homogeneous and specific orientation of the immobilized binding partner. This chapter provides guidelines for the design of capturing systems that generally provide high-end kinetic data suitable for determination of binding rate constants. This principle will be illustrated by the binding of synthetic peptides derived from an intrinsically disordered region of the endothelial glycosylphosphatidylinositol-anchored high-density lipoprotein binding protein 1 (GPIHBP1) to captured monoclonal antibodies.
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Affiliation(s)
- Julie M Leth
- Finsen Laboratory, Rigshospitalet, The Biotech Research and Innovation Centre (BRIC), University of Copenhagen, Copenhagen, Denmark
| | - Michael Ploug
- Finsen Laboratory, Rigshospitalet, The Biotech Research and Innovation Centre (BRIC), University of Copenhagen, Copenhagen, Denmark.
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Bae JW, Im H, Hwang JM, Kim SH, Ma L, Kwon HJ, Kim E, Kim MO, Kwon WS. Vanadium adversely affects sperm motility and capacitation status via protein kinase A activity and tyrosine phosphorylation. Reprod Toxicol 2020; 96:195-201. [PMID: 32659260 DOI: 10.1016/j.reprotox.2020.07.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 05/03/2020] [Revised: 07/02/2020] [Accepted: 07/05/2020] [Indexed: 11/19/2022]
Abstract
Vanadium is a chemical element that enters the atmosphere via anthropogenic pollution. Exposure to vanadium affects cancer development and can result in toxic effects. Multiple studies have focused on vanadium's detrimental effect on male reproduction using conventional sperm analysis techniques. This study focused on vanadium's effect on spermatozoa following capacitation at the molecular level, in order to provide a more detailed assessment of vanadium's reproductive toxicity. We observed a decrease in germ cell density and a structural collapse of the testicular organ in seminiferous tubules during vanadium treatment. In addition, various sperm motion parameters were significantly decreased regardless of capacitation status, including sperm motility, rapid sperm motility, and progressive sperm motility. Curvilinear velocity, straight-line velocity, average path velocity, beat cross frequency, and mean amplitude of head lateral displacement were also decreased after capacitation. Capacitation status was altered after capacitation. Vanadium dramatically enhanced protein kinase A (PKA) activity and tyrosine phosphorylation. Taken together, our results suggest that vanadium is detrimental to male fertility by negatively influencing sperm motility, motion kinematics, and capacitation status via abnormal PKA activity and tyrosine phosphorylation before and after capacitation.
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Affiliation(s)
- Jeong-Won Bae
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju, Gyeongsangbuk-do 37224, Republic of Korea
| | - Hobin Im
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju, Gyeongsangbuk-do 37224, Republic of Korea
| | - Ju-Mi Hwang
- Department of Animal Biotechnology, Kyungpook National University, Sangju, Gyeongsangbuk-do 37224, Republic of Korea
| | - So-Hye Kim
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju, Gyeongsangbuk-do 37224, Republic of Korea
| | - Lei Ma
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju, Gyeongsangbuk-do 37224, Republic of Korea
| | - Hong Ju Kwon
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju, Gyeongsangbuk-do 37224, Republic of Korea
| | - Eungyung Kim
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju, Gyeongsangbuk-do 37224, Republic of Korea
| | - Myoung Ok Kim
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju, Gyeongsangbuk-do 37224, Republic of Korea; Department of Animal Biotechnology, Kyungpook National University, Sangju, Gyeongsangbuk-do 37224, Republic of Korea.
| | - Woo-Sung Kwon
- Department of Animal Science and Biotechnology, Kyungpook National University, Sangju, Gyeongsangbuk-do 37224, Republic of Korea; Department of Animal Biotechnology, Kyungpook National University, Sangju, Gyeongsangbuk-do 37224, Republic of Korea.
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Yezid H, Pannhorst K, Wei H, Chowdhury SI. Bovine herpesvirus 1 (BHV-1) envelope protein gE subcellular trafficking is contributed by two separate YXXL/Φ motifs within the cytoplasmic tail which together promote efficient virus cell-to-cell spread. Virology 2020; 548:136-151. [PMID: 32838935 DOI: 10.1016/j.virol.2020.05.009] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 05/15/2020] [Accepted: 05/22/2020] [Indexed: 11/16/2022]
Abstract
Bovine herpesvirus envelope glycoprotein E (gE) and, in particular, the gE cytoplasmic tail (CT) is a virulence determinant in cattle. Also, the gE CT contributes to virus cell-to-cell spread and anterograde neuronal transport. In this study, our goal was to map the gE CT sub-domains that contribute to virus cell-to-cell spread property. A panel of gE-CT specific mutant viruses was constructed and characterized, in vitro, with respect to their plaque phenotypes, gE recycling and gE basolateral membrane targeting. The results revealed that disruption of the tyrosine-based motifs, 467YTSL470 and 563YTVV566, individually produced smaller plaque phenotypes than the wild type. However, they were slightly larger than the gE CT-null virus plaques. The Y467A mutation affected the gE endocytosis, gE trans-Golgi network (TGN) recycling, and gE virion incorporation properties. However, the Y563A mutation affected only the gE basolateral cell-surface redistribution function. Notably, the simultaneous Y467A/Y563A mutations produced gE CT-null virus-like plaque phenotypes.
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Affiliation(s)
- Hocine Yezid
- Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, 70803, United States
| | - Katrin Pannhorst
- Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, 70803, United States
| | - Huiyong Wei
- Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, 70803, United States
| | - Shafiqul I Chowdhury
- Department of Pathobiological Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, LA, 70803, United States.
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Abdullah M, Hassan A, Rashid S, Naeem M. Tyrosine phosphorylation as a regulator of dystrophin and beta-dystroglycan interaction: A molecular insight. J Mol Graph Model 2020; 99:107623. [PMID: 32348939 DOI: 10.1016/j.jmgm.2020.107623] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 09/04/2019] [Revised: 04/15/2020] [Accepted: 04/16/2020] [Indexed: 11/25/2022]
Abstract
Dystrophin-β-dystroglycan interaction has gained a special attention during current years due to its association with the pathogenesis of muscular dystrophies. Dystrophin is an important component of dystrophin associated protein complex that functions in the normal physiology and cell signaling in addition to membrane stabilization and provides integrity to skeletal muscle fibers. WW, EF-hand and ZZ domains of dystrophin are known to bind with extreme C-terminal region of beta-dystroglycan (β-DG) containing PPxY motif and this interaction is experimentally proven to be coordinated and regulated by two tyrosine (Tyr886 and Tyr892) residues in the C-terminus of beta-dystroglycan. These tyrosine residues are phosphorylated in adhesion dependent manner that disrupts dystrophin-β-DG interaction. The failure of dystrophin to interact with β-DG causes muscular dystrophies. In this study, we have performed molecular docking analysis of dystrophin with phosphorylated and mutated variants of β-DG to pinpoint the actual nature of this interaction at molecular level. We have discovered significant structural and conformational changes in β-DG molecule caused by mutations and tyrosine phosphorylation that alter the nature and site of its interaction with dystrophin. Our results not only support the previous findings but also bring to attention previously unreported discoveries about the nature of this interaction and behavior of different β-DG variants with dystrophin WW, EF-hand and ZZ domains.
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Affiliation(s)
- Muhammad Abdullah
- Department of Biochemistry, Quaid-i-Azam University, Islamabad, Pakistan
| | - Adeena Hassan
- National Center for Bioinformatics, Quaid-i-Azam University, Islamabad, Pakistan
| | - Sajid Rashid
- National Center for Bioinformatics, Quaid-i-Azam University, Islamabad, Pakistan
| | - Muhammad Naeem
- Department of Biotechnology, Quaid-i-Azam University, Islamabad, Pakistan.
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Bagnato G, Leopizzi M, Urciuoli E, Peruzzi B. Nuclear Functions of the Tyrosine Kinase Src. Int J Mol Sci 2020; 21:ijms21082675. [PMID: 32290470 PMCID: PMC7215861 DOI: 10.3390/ijms21082675] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/09/2020] [Accepted: 04/10/2020] [Indexed: 12/13/2022] Open
Abstract
Src is the representative member of the Src-family kinases (SFKs), a group of tyrosine kinases involved in several cellular processes. Its main function has been for long confined to the plasma membrane/cytoplasm compartment, being a myristoylated protein anchored to the cell membrane and functioning downstream to receptors, most of them lacking intrinsic kinase activity. In the last decades, new roles for some SFKs have been described in the nuclear compartment, suggesting that these proteins can also be involved in directly regulating gene transcription or nucleoskeleton architecture. In this review, we focused on those nuclear functions specifically attributable to Src, by considering its function as both tyrosine kinase and adapting molecule. In particular, we addressed the Src involvement in physiological as well as in pathological conditions, especially in tumors.
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Affiliation(s)
- Giulia Bagnato
- Multifactorial Disease and Complex Phenotype Research Area, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (G.B.); (E.U.)
| | - Martina Leopizzi
- Department of Medico-Surgical Sciences and Biotechnology, Polo Pontino, Sapienza University, 04100 Latina, Italy;
| | - Enrica Urciuoli
- Multifactorial Disease and Complex Phenotype Research Area, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (G.B.); (E.U.)
| | - Barbara Peruzzi
- Multifactorial Disease and Complex Phenotype Research Area, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (G.B.); (E.U.)
- Correspondence:
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Hehenberger E, Eitel M, Fortunato SAV, Miller DJ, Keeling PJ, Cahill MA. Early eukaryotic origins and metazoan elaboration of MAPR family proteins. Mol Phylogenet Evol 2020; 148:106814. [PMID: 32278076 DOI: 10.1016/j.ympev.2020.106814] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [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: 09/04/2019] [Revised: 03/24/2020] [Accepted: 04/01/2020] [Indexed: 01/01/2023]
Abstract
The membrane-associated progesterone receptor (MAPR) family consists of heme-binding proteins containing a cytochrome b5 (cytb5) domain characterized by the presence of a MAPR-specific interhelical insert region (MIHIR) between helices 3 and 4 of the canonical cytb5-domain fold. Animals possess three MAPR genes (PGRMC-like, Neuferricin and Neudesin). Here we show that all three animal MAPR genes were already present in the common ancestor of the opisthokonts (comprising animals and fungi as well as related single-celled taxa). All three MAPR genes acquired extensions C-terminal to the cytb5 domain, either before or with the evolution of animals. The archetypical MAPR protein, progesterone receptor membrane component 1 (PGRMC1), contains phosphorylated tyrosines Y139 and Y180. The combination of Y139/Y180 appeared in the common ancestor of cnidarians and bilaterians, along with an early embryological organizer and synapsed neurons, and is strongly conserved in all bilaterian animals. A predicted protein interaction motif in the PGRMC1 MIHIR is potentially regulated by Y139 phosphorylation. A multilayered model of animal MAPR function acquisition includes some pre-metazoan functions (e.g., heme binding and cytochrome P450 interactions) and some acquired animal-specific functions that involve regulation of strongly conserved protein interaction motifs acquired by animals (Metazoa). This study provides a conceptual framework for future studies, against which especially PGRMC1's multiple functions can perhaps be stratified and functionally dissected.
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Affiliation(s)
- Elisabeth Hehenberger
- Department of Botany, University of British Columbia, 3529-6270 University Boulevard, Vancouver, BC V6T 1Z4, Canada
| | - Michael Eitel
- Department of Earth and Environmental Sciences, Paleontology and Geobiology, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Sofia A V Fortunato
- ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, QLD 4811, Australia
| | - David J Miller
- ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, QLD 4811, Australia
| | - Patrick J Keeling
- Department of Botany, University of British Columbia, 3529-6270 University Boulevard, Vancouver, BC V6T 1Z4, Canada
| | - Michael A Cahill
- School of Biomedical Sciences, Charles Sturt University, Wagga Wagga, NSW 2678, Australia; ACRF Department of Cancer Biology and Therapeutics, The John Curtin School of Medical Research, Canberra, ACT 2601, Australia.
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Gao P, Hu MM, Shu HB. CSK promotes innate immune response to DNA virus by phosphorylating MITA. Biochem Biophys Res Commun 2020; 526:199-205. [PMID: 32201077 DOI: 10.1016/j.bbrc.2020.03.069] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 02/20/2020] [Accepted: 03/11/2020] [Indexed: 02/08/2023]
Abstract
Upon detection of viral DNA, the cytoplasmic DNA sensor cyclic GMP-AMP (cGAMP) synthase (cGAS) utilizes GTP and ATP as substrates to synthesize the second messenger molecule 2'3'cyclic GMP-AMP (cGAMP), which binds to the ER-associated adaptor protein MITA/STING to signal innate antiviral response to DNA virus. How the cGAS-MITA pathways are post-translationally regulated is not fully understood. In this study, we identified the tyrosine kinase CSK as a positive regulator of cGAS-MITA mediated innate antiviral response. CSK-deficiency inhibits DNA virus-triggered induction of downstream antiviral effector genes. Following DNA virus infection, CSK phosphorylates MITA at Y240 and Y245, which is important for its activation. These results suggest that CSK plays a role in modulating innate immune response to DNA virus.
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Affiliation(s)
- Peng Gao
- Department of Infectious Diseases, Medical Research Institute, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, 430071, China
| | - Ming-Ming Hu
- Department of Infectious Diseases, Medical Research Institute, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, 430071, China
| | - Hong-Bing Shu
- Department of Infectious Diseases, Medical Research Institute, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, 430071, China.
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Sánchez-Rodríguez R, González GM, Becerril-García MA, Treviño-Rangel RDJ, Marcos-Vilchis A, González-Pedrajo B, Valvano MA, Andrade A. The BPtpA protein from Burkholderia cenocepacia belongs to a new subclass of low molecular weight protein tyrosine phosphatases. Arch Biochem Biophys 2020; 681:108277. [PMID: 31978399 DOI: 10.1016/j.abb.2020.108277] [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] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 01/15/2020] [Accepted: 01/17/2020] [Indexed: 11/24/2022]
Abstract
Low molecular weight protein tyrosine phosphatases (LMW-PTP) are ubiquitous enzymes found across a spectrum of genera from prokaryotes to higher eukaryotes. LMW-PTP belong to the Cys-based PTP class II protein family. Here, we show that LMW-PTP can be categorized into two different groups, referred as class II subdivision I (class II.I) and subdivision II (class II.II). Using BPtpA from the opportunistic pathogen Burkholderia cenocepacia, as a representative member of the LMW-PTP class II.I, we demonstrated that four conserved residues (W47, H48, D80, and F81) are required for enzyme function. Guided by an in silico model of BPtpA, we show that the conserved residues at α3-helix (D80 and F81) contribute to protein stability, while the other conserved residues in the W-loop (W47 and H48) likely play a role in substrate recognition. Overall, our results provide new information on LMW-PTP protein family and establish B. cenocepacia as a suitable model to investigate how substrates are recognized and sorted by these proteins.
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Affiliation(s)
- Rebeca Sánchez-Rodríguez
- Universidad Autónoma de Nuevo León, Facultad de Medicina, Departamento de Microbiología. Monterrey, Nuevo León, 64460, Mexico
| | - Gloria M González
- Universidad Autónoma de Nuevo León, Facultad de Medicina, Departamento de Microbiología. Monterrey, Nuevo León, 64460, Mexico
| | - Miguel A Becerril-García
- Universidad Autónoma de Nuevo León, Facultad de Medicina, Departamento de Microbiología. Monterrey, Nuevo León, 64460, Mexico
| | - Rogelio de J Treviño-Rangel
- Universidad Autónoma de Nuevo León, Facultad de Medicina, Departamento de Microbiología. Monterrey, Nuevo León, 64460, Mexico
| | - Arely Marcos-Vilchis
- Departamento de Genética Molecular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, 70-243, Mexico
| | - Bertha González-Pedrajo
- Departamento de Genética Molecular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, 70-243, Mexico
| | - Miguel A Valvano
- Wellcome-Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast, BT9 7BL, United Kingdom
| | - Angel Andrade
- Universidad Autónoma de Nuevo León, Facultad de Medicina, Departamento de Microbiología. Monterrey, Nuevo León, 64460, Mexico.
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Glukhova XA, Trizna JA, Proussakova OV, Gogvadze VG, Beletsky IP. Dephosphorylation of Fas-ligand and caveolin-1 is a prerequisite step in Fas-ligand - caveolin-1 complex formation and cell death stimulation. Cell Signal 2020; 70:109590. [PMID: 32109550 DOI: 10.1016/j.cellsig.2020.109590] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Revised: 02/11/2020] [Accepted: 02/25/2020] [Indexed: 10/24/2022]
Abstract
Fas-ligand/CD178 belongs to the TNF family proteins and is the well-characterized inducer of cell death. We showed previously that the interaction of Fas-ligand and caveolin-1 is necessary for Fas-ligand translocation to rafts, and the subsequent induction of Fas-ligand-dependent cell death. Both molecules can undergo phosphorylation, however the role of the phosphorylation state of Fas-ligand and caveolin-1 in their physical association, and consequently in of Fas - mediated cell death induction is currently unknown. In this study, we show that in control cells Fas-ligand interaction with caveolin-1 is not observed, and both molecules are phosphorylated. The intracellular part of Fas-ligand was shown to form a complex with p59Fyn-kinase. Upon cell death activation, the expression and activity of p59Fyn-kinase decreases substantially, leading to the disruption of Fas-ligand - p59Fyn-kinase association, dephosphorylation of Fas-ligand and caveolin-1, and formation of a complex between them (Fas-ligand - caveolin-1). The analysis of the effects of kinase and phosphatase inhibitors revealed that phosphorylation of Fas-ligand and caveolin-1 at tyrosine residues suppressed Fas-mediated cell death. Thus, dephosphorylation of Fas-ligand and caveolin-1 is critical for triggering Fas-ligand-mediated apoptotic pathway and cell death execution.
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Affiliation(s)
- Xenia A Glukhova
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Puschino, Institutskaya st., 3, 142290, Russia
| | - Julia A Trizna
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Puschino, Institutskaya st., 3, 142290, Russia
| | - Olga V Proussakova
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Puschino, Institutskaya st., 3, 142290, Russia
| | - Vladimir G Gogvadze
- Faculty of Fundamental Medicine, MV Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Igor P Beletsky
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Puschino, Institutskaya st., 3, 142290, Russia.
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Luo T, Wang F, Weng S, Chen H, Kang H, Wang J, Luo S. Anethole compromises human sperm function by affecting the sperm intracellular calcium concentration and tyrosine phosphorylation. Reprod Toxicol 2020; 93:99-105. [PMID: 32004625 DOI: 10.1016/j.reprotox.2020.01.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 11/23/2019] [Revised: 01/12/2020] [Accepted: 01/24/2020] [Indexed: 11/28/2022]
Abstract
Anethole is a natural anisole derivative that has been widely used in food and daily chemical industries, agricultural applications and the traditional medicine. It is closely related to aspects of daily life, and humans can easily be exposed to it. Although the reproductive toxicity of anethole was shown in the rat, its effect on human reproduction remains unknown. In this study, we examined the effect of anethole on human sperm in vitro. Different anethole doses (0.1, 1, 10, and 100 μM) were applied to ejaculated human sperm. Fertilization-essential functions, as well as the intracellular calcium concentration ([Ca2+]i) and tyrosine phosphorylation, two vital factors for regulating sperm function, were measured. The results indicated that 10 and 100 μM anethole significantly reduced the motility, hyperactivation, and penetration ability of human sperm (P < 0.05) and inhibited the increase in human sperm functions induced by progesterone, a hormone essential for sperm function activation. Additionally, 10 and 100 μM anethole decreased both basal and progesterone-increased tyrosine phosphorylation, [Ca2+]i, and the current of CATSPER, a cation channel of sperm predominant for Ca2+ influx. These results suggest that anethole inhibits human sperm functions by reducing sperm [Ca2+]i through CATSPER and suppressing tyrosine phosphorylation in vitro, raising the fact that the caution is needed when overtaking anethole.
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Affiliation(s)
- Tao Luo
- Institute of Life Science and School of Life Science, Nanchang University, Nanchang, Jiangxi, 330031, PR China
| | - Fang Wang
- Institute of Life Science and School of Life Science, Nanchang University, Nanchang, Jiangxi, 330031, PR China
| | - Shiqi Weng
- Department of Horticulture, College of Agronomy, Jiangxi Agricultural University, Nanchang, 330045, PR China
| | - Houyang Chen
- Reproductive Medical Center, Jiangxi Maternal and Child Health Hospital, Nanchang, Jiangxi 330006, PR China
| | - Hang Kang
- Institute of Life Science and School of Life Science, Nanchang University, Nanchang, Jiangxi, 330031, PR China
| | - Jie Wang
- Department of Horticulture, College of Agronomy, Jiangxi Agricultural University, Nanchang, 330045, PR China
| | - Sha Luo
- Department of Horticulture, College of Agronomy, Jiangxi Agricultural University, Nanchang, 330045, PR China.
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Liu T, Zhang H, Fang J, Yang Z, Chen R, Wang Y, Zhao X, Ge S, Yu J, Huang J. AGO2 phosphorylation by c-Src kinase promotes tumorigenesis. Neoplasia 2020; 22:129-141. [PMID: 31981897 PMCID: PMC6992904 DOI: 10.1016/j.neo.2019.12.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 10/02/2019] [Revised: 12/17/2019] [Accepted: 12/19/2019] [Indexed: 12/24/2022] Open
Abstract
Numerous studies have reported that c-Src is highly expressed with high tyrosine kinase activity in a variety of tumors. However, it remains unclear whether c-Src contributes to the miRNA pathway. Here, we report that c-Src can interact with and phosphorylate AGO2, a core component of RISC complex, at tyr 393, tyr 529 and tyr749. Mechanistically, it is confirmed that c-Src phosphorylation of AGO2 at tyr393 reduces its binding to DICER, thereby suppressing the maturation of long-loop pre-miR-192. However, the other two phosphorylation sites don’t work on this function. Significantly, Ectopic expression of wild-type AGO2, but not the three tyrosine site mutants, has an obvious tumor-promoting effect in vitro and in vivo, which function could be blocked thoroughly by treatment with c-Src kinase inhibitor, Saracatinib. Our findings identify AGO2 as c-Src target and c-Src phosphorylation of AGO2 may therefore play a potential role during tumor progress.
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Affiliation(s)
- Tianqi Liu
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine (SJTU-SM), Shanghai 200025, China
| | - Hailong Zhang
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine (SJTU-SM), Shanghai 200025, China
| | - Jiayu Fang
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine (SJTU-SM), Shanghai 200025, China
| | - Zhi Yang
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai Jiao Tong University School of Medicine (SJTU-SM), Shanghai 200025, China
| | - Ran Chen
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine (SJTU-SM), Shanghai 200025, China
| | - Yanli Wang
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine (SJTU-SM), Shanghai 200025, China
| | - Xian Zhao
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine (SJTU-SM), Shanghai 200025, China
| | - Shengfang Ge
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai Jiao Tong University School of Medicine (SJTU-SM), Shanghai 200025, China
| | - Jianxiu Yu
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine (SJTU-SM), Shanghai 200025, China.
| | - Jian Huang
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine (SJTU-SM), Shanghai 200025, China.
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Huang YY, Li J, Zhang HR, Bai SW, Yang HY, Shen B, Du J, Xia XM. The effect of transient receptor potential vanilloid 4 on the intestinal epithelial barrier and human colonic cells was affected by tyrosine-phosphorylated claudin-7. Biomed Pharmacother 2019; 122:109697. [PMID: 31918271 DOI: 10.1016/j.biopha.2019.109697] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [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: 09/29/2019] [Revised: 11/22/2019] [Accepted: 11/22/2019] [Indexed: 02/07/2023] Open
Abstract
TRPV4 is a type of nonselective cation channel, and activation of TRPV4 in the gastrointestinal tract causes experimental colitis in mice. A previous study found that tyrosine-phosphorylated claudin-7 is increased in experimental colitis. The relationship between tyrosine-phosphorylated claudin-7 and TRPV4 remains undefined. In the present study, we developed a claudin-7 mutant by replacing tyrosine with glutamic acid at position 210, named cld7-Y210E colonic cells. We found that activation of TRPV4 by GSK1016790A increased the permeability of control colonic cell monolayers, which was decreased by the TRPV4 antagonist HC067047. In monolayers of cld7-Y210E colonic cells, no differences in permeability were found between GSK1016790A and HC067047 treatments. GSK1016790A increased the aggregation of claudin-7 at the cell membrane in control colonic cells, and the effect was diminished by HC067047. In cld7-Y210E colonic cells, neither GSK1016790A nor HC067047 apparently changed the aggregation of claudin-7. Neither GSK1016790A nor HC067047 altered the TRPV4 protein level in vector colonic cells. In cld7-wild colonic cells, GSK1016790A did not alter the TRPV4 protein level, while HC067047 increased the TRPV4 protein level. The TRPV4 protein level was increased in cld7-Y210E colonic cells, decreased by GSK1016790A and further decreased by HC067047. Calcium influx was not significantly changed in the control colonic cells treated with GSK1016790A. However, GSK1016790A significantly increased calcium influx in cld7-Y210E colonic cells. We concluded that tyrosine-phosphorylated claudin-7 affects the TRPV4-modulated intestinal epithelial barrier, TRPV4-mediated calcium influx, and the protein expression of TRPV4 in human colonic cells. We suggest that tyrosine-phosphorylated claudin-7 affects the TRPV4-modulated intestinal epithelial barrier, which might be related to TRPV4 expression and TRPV4-mediated calcium influx.
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Affiliation(s)
- Yuan-Yuan Huang
- Department of Internal Medicine, Yangpu Hospital, Tongji University, Shanghai 200090, China
| | - Jing Li
- Department of Gastroenterology and Hepatology, Danyang People's Hospital, Danyang, 212300, Jiangsu, China
| | - He-Rui Zhang
- Department of Gastroenterology and Hepatology, the Fourth Affiliated Hospital of Anhui Medical University, Hefei, 230001, Anhui, China
| | - Su-Wen Bai
- Department of Physiology, School of Basic Medicine, Anhui Medical University, Hefei 230032, Anhui, China
| | - Hui-Yun Yang
- Department of Gastroenterology, the Anhui Provincial Children's Hospital, Hefei 230051, Anhui, China
| | - Bing Shen
- Department of Physiology, School of Basic Medicine, Anhui Medical University, Hefei 230032, Anhui, China
| | - Juan Du
- Department of Physiology, School of Basic Medicine, Anhui Medical University, Hefei 230032, Anhui, China.
| | - Xian-Ming Xia
- Department of Gastroenterology and Hepatology, the Fourth Affiliated Hospital of Anhui Medical University, Hefei, 230001, Anhui, China.
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Fougere B, Barnes KR, Francis ME, Claus LN, Cozzi RRF, Marshall WS. Focal adhesion kinase and osmotic responses in ionocytes of Fundulus heteroclitus, a euryhaline teleost fish. Comp Biochem Physiol A Mol Integr Physiol 2019; 241:110639. [PMID: 31863842 DOI: 10.1016/j.cbpa.2019.110639] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 10/21/2019] [Revised: 12/12/2019] [Accepted: 12/13/2019] [Indexed: 11/17/2022]
Abstract
Cystic Fibrosis Transmembrane conductance Regulator (CFTR) anion channels are the regulated exit pathway in Cl- secretion by teleost salt secreting ionocytes of the gill and opercular epithelia of euryhaline teleosts. By confocal light immunocytochemistry using regular and phospho-antibodies directed against conserved sites, we found that killifish CFTR (kfCFTR) and the tyrosine kinase Focal Adhesion Kinase (FAK) phosphorylated at Y407 (FAKpY407) and FAKpY397 are colocalized at the apical membrane and in subjacent membrane vesicles of ionocytes. Hypotonic shock and the α-2 adrenergic agonist clonidine rapidly and reversibly inhibit Cl- secretion by isolated opercular epithelia, simultaneous with dephosphorylation of FAKpY407 and increased FAKpY397, located in the apical membrane of ionocytes in the opercular epithelium. FAKpY407 is re-phosphorylated at the apical membrane of ionocytes and Cl- secretion rapidly restored by hypertonic shock, detectable at 2 min., maximum at 5 min and still elevated at 30 min. In isolated opercular epithelia, the FAK phosphorylation inhibitor Y15 and p38MAP kinase inhibitor SB203580 significantly blunted the recovery of short-circuit current (Isc, equal to Cl- secretion rate) after hypertonic shock. The cSRC inhibitor saracatinib dephosphorylated FAKpY861 seen near tight junctions of pavement cells, and reduced the increase in epithelial resistance normally seen with clonidine inhibition of ion transport, while FAKpY397 was unaffected. The results show rapid osmosensitive responses in teleost fish ionocytes involve phosphorylation of CFTR by FAKpY407, an opposing role for FAKpY397 and a possible role for FAKpY861 in tight junction dynamics.
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Affiliation(s)
- Breton Fougere
- Department of Biology, St. Francis Xavier University, P.O. Box 5000, Antigonish, Nova Scotia B2G 2W5, Canada
| | - Katelyn R Barnes
- Department of Biology, St. Francis Xavier University, P.O. Box 5000, Antigonish, Nova Scotia B2G 2W5, Canada
| | - Magen E Francis
- Department of Biology, St. Francis Xavier University, P.O. Box 5000, Antigonish, Nova Scotia B2G 2W5, Canada
| | - Lauren N Claus
- Department of Biology, St. Francis Xavier University, P.O. Box 5000, Antigonish, Nova Scotia B2G 2W5, Canada
| | - Regina R F Cozzi
- Department of Biology, St. Francis Xavier University, P.O. Box 5000, Antigonish, Nova Scotia B2G 2W5, Canada
| | - William S Marshall
- Department of Biology, St. Francis Xavier University, P.O. Box 5000, Antigonish, Nova Scotia B2G 2W5, Canada.
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