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Biological Effects of Transforming Growth Factor Beta in Human Cholangiocytes. BIOLOGY 2022; 11:biology11040566. [PMID: 35453765 PMCID: PMC9033039 DOI: 10.3390/biology11040566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 03/30/2022] [Accepted: 04/05/2022] [Indexed: 11/17/2022]
Abstract
TGF-β is a cytokine implicated in multiple cellular responses, including cell cycle regulation, fibrogenesis, angiogenesis and immune modulation. In response to pro-inflammatory and chemotactic cytokines and growth factors, cholangiocytes prime biliary damage, characteristic of cholangiopathies and pathologies that affect biliary tree. The effects and signaling related to TGF-β in cholangiocyte remains poorly investigated. In this study, the cellular response of human cholangiocytes to TGF-β was examined. Wound-healing assay, proliferation assay and cell cycle analyses were used to monitor the changes in cholangiocyte behavior following 24 and 48 h of TGF-β stimulation. Moreover, proteomic approach was used to identify proteins modulated by TGF-β treatment. Our study highlighted a reduction in cholangiocyte proliferation and a cell cycle arrest in G0/G1 phase following TGF-β treatment. Moreover, proteomic analysis allowed the identification of four downregulated proteins (CaM kinase II subunit delta, caveolin-1, NipSnap1 and calumin) involved in Ca2+ homeostasis. Accordingly, Gene Ontology analysis highlighted that the plasma membrane and endoplasmic reticulum are the cellular compartments most affected by TGF-β. These results suggested that the effects of TGF-β in human cholangiocytes could be related to an imbalance of intracellular calcium homeostasis. In addition, for the first time, we correlated calumin and NipSnap1 to TGF-β signaling.
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Khattar V, Wang L, Peng JB. Calcium selective channel TRPV6: Structure, function, and implications in health and disease. Gene 2022; 817:146192. [PMID: 35031425 PMCID: PMC8950124 DOI: 10.1016/j.gene.2022.146192] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 12/20/2021] [Accepted: 01/07/2022] [Indexed: 12/14/2022]
Abstract
Calcium-selective channel TRPV6 (Transient Receptor Potential channel family, Vanilloid subfamily member 6) belongs to the TRP family of cation channels and plays critical roles in transcellular calcium (Ca2+) transport, reuptake of Ca2+ into cells, and maintaining a local low Ca2+ environment for certain biological processes. Recent crystal and cryo-electron microscopy-based structures of TRPV6 have revealed mechanistic insights on how the protein achieves Ca2+ selectivity, permeation, and inactivation by calmodulin. The TRPV6 protein is expressed in a range of epithelial tissues such as the intestine, kidney, placenta, epididymis, and exocrine glands such as the pancreas, prostate and salivary, sweat, and mammary glands. The TRPV6 gene is a direct transcriptional target of the active form of vitamin D and is efficiently regulated to meet the body's need for Ca2+ demand. In addition, TRPV6 is also regulated by the level of dietary Ca2+ and under physiological conditions such as pregnancy and lactation. Genetic models of loss of function in TRPV6 display hypercalciuria, decreased bone marrow density, deficient weight gain, reduced fertility, and in some cases alopecia. The models also reveal that the channel plays an indispensable role in maintaining maternal-fetal Ca2+ transport and low Ca2+ environment in the epididymal lumen that is critical for male fertility. Most recently, loss of function mutations in TRPV6 gene is linked to transient neonatal hyperparathyroidism and early onset chronic pancreatitis. TRPV6 is overexpressed in a wide range of human malignancies and its upregulation is strongly correlated to tumor aggressiveness, metastasis, and poor survival in selected cancers. This review summarizes the current state of knowledge on the expression, structure, biophysical properties, function, polymorphisms, and regulation of TRPV6. The aberrant expression, polymorphisms, and dysfunction of this protein linked to human diseases are also discussed.
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Affiliation(s)
- Vinayak Khattar
- Division of Nephrology, Department of Medicine, Nephrology Research and Training Center, Department of Urology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Lingyun Wang
- Division of Nephrology, Department of Medicine, Nephrology Research and Training Center, Department of Urology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Ji-Bin Peng
- Division of Nephrology, Department of Medicine, Nephrology Research and Training Center, Department of Urology, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
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3
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Fathi E, Yarbro JM, Homayouni R. NIPSNAP protein family emerges as a sensor of mitochondrial health. Bioessays 2021; 43:e2100014. [PMID: 33852167 PMCID: PMC10577685 DOI: 10.1002/bies.202100014] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 03/17/2021] [Accepted: 03/19/2021] [Indexed: 12/11/2022]
Abstract
Since their discovery over two decades ago, the molecular and cellular functions of the NIPSNAP family of proteins (NIPSNAPs) have remained elusive until recently. NIPSNAPs interact with a variety of mitochondrial and cytoplasmic proteins. They have been implicated in multiple cellular processes and associated with different physiologic and pathologic conditions, including pain transmission, Parkinson's disease, and cancer. Recent evidence demonstrated a direct role for NIPSNAP1 and NIPSNAP2 proteins in regulation of mitophagy, a process that is critical for cellular health and maintenance. Importantly, NIPSNAPs contain a 110 amino acid domain that is evolutionary conserved from mammals to bacteria. However, the molecular function of the conserved NIPSNAP domain and its potential role in mitophagy have not been explored. It stands to reason that the highly conserved NIPSNAP domain interacts with a substrate that is ubiquitously present across all species and can perhaps act as a sensor for mitochondrial health.
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Affiliation(s)
- Esmat Fathi
- Department of Biological Sciences, University of Memphis, Memphis, TN, United States
- Beaumont Research Institute, Beaumont Health, Royal Oak, MI, United States
| | - Jay M. Yarbro
- Departments of Structural Biology and Developmental Neurobiology, St. Jude Children’s Research Hospital, Memphis, TN, United States
- Integrated Biomedical Sciences Program, University of Tennessee Health Science Center, Memphis, TN, United States
| | - Ramin Homayouni
- Beaumont Research Institute, Beaumont Health, Royal Oak, MI, United States
- Oakland University William Beaumont School of Medicine, Oakland University, Rochester, MI, United States
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4
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Peng J, Ma K, Rong H, Xiao B, Zhu J, He JT. Knockdown of GBAS regulates esophageal cancer cell viability and apoptosis. Mol Med Rep 2021; 24:523. [PMID: 34036378 PMCID: PMC8160481 DOI: 10.3892/mmr.2021.12162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 04/22/2021] [Indexed: 11/06/2022] Open
Abstract
Esophageal cancer (EC) is the sixth leading cause of cancer‑related mortality worldwide, with the incidence gradually increasing each year. Therefore, further clarifying the mechanism underlying the development of EC may be beneficial for identifying novel biomarkers and targets for its treatment. The present study aimed to determine the functional roles of glioblastoma‑amplified sequence (GBAS), a newly identified gene that has been reported to play crucial roles in multiple types of cancer, including in the malignant behavior of EC cells, such as cell viability, colony formation, cell apoptosis and cell cycle progression. The results of the present study revealed that, in vitro, the knockdown of GBAS significantly suppressed cell viability and colony formation in TE‑1 and KYSE‑150 cell lines, using a Celigo cell count analysis and colony formation assay respectively, whereas the apoptotic rate of EC cells was significantly increased by the knockdown of GBAS using Annexin V APC staining. Furthermore, following GBAS knockdown, the cell cycle progression of TE‑1 and KYSE‑150 cells was arrested in the G1 phase using PI staining. In conclusion, the findings of the present study suggested that GBAS may serve a role in EC by regulating cell viability, apoptosis and cell cycle progression.
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Affiliation(s)
- Jun Peng
- Department of Thoracic Surgery, Sichuan Cancer Hospital and Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, P.R. China
| | - Ke Ma
- Department of Thoracic Surgery, Sichuan Cancer Hospital and Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, P.R. China
| | - Hao Rong
- Department of Thoracic Surgery, Sichuan Cancer Hospital and Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, P.R. China
| | - Bo Xiao
- Department of Thoracic Surgery, Sichuan Cancer Hospital and Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, P.R. China
| | - Jiang Zhu
- Department of Thoracic Surgery, Sichuan Cancer Hospital and Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, P.R. China
| | - Jin-Tao He
- Department of Thoracic Surgery, Sichuan Cancer Hospital and Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, P.R. China
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5
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Velásquez E, Martins-de-Souza D, Velásquez I, Carneiro GRA, Schmitt A, Falkai P, Domont GB, Nogueira FCS. Quantitative Subcellular Proteomics of the Orbitofrontal Cortex of Schizophrenia Patients. J Proteome Res 2019; 18:4240-4253. [PMID: 31581776 DOI: 10.1021/acs.jproteome.9b00398] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Schizophrenia is a chronic disease characterized by the impairment of mental functions with a marked social dysfunction. A quantitative proteomic approach using iTRAQ labeling and SRM, applied to the characterization of mitochondria (MIT), crude nuclear fraction (NUC), and cytoplasm (CYT), can allow the observation of dynamic changes in cell compartments providing valuable insights concerning schizophrenia physiopathology. Mass spectrometry analyses of the orbitofrontal cortex from 12 schizophrenia patients and 8 healthy controls identified 655 protein groups in the MIT fraction, 1500 in NUC, and 1591 in CYT. We found 166 groups of proteins dysregulated among all enriched cellular fractions. Through the quantitative proteomic analysis, we detect as the main biological pathways those related to calcium and glutamate imbalance, cell signaling disruption of CREB activation, axon guidance, and proteins involved in the activation of NF-kB signaling along with the increase of complement protein C3. Based on our data analysis, we suggest the activation of NF-kB as a possible pathway that links the deregulation of glutamate, calcium, apoptosis, and the activation of the immune system in schizophrenia patients. All MS data are available in the ProteomeXchange Repository under the identifier PXD015356 and PXD014350.
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Affiliation(s)
- Erika Velásquez
- Proteomics Unit, Department of Biochemistry, Institute of Chemistry , Federal University of Rio de Janeiro , Rio de Janeiro 21941-909 , Brazil
| | - Daniel Martins-de-Souza
- Laboratory of Neuroproteomics, Department of Biochemistry, Institute of Biology , University of Campinas (UNICAMP) , Campinas 13083-970 , Brazil.,Experimental Medicine Research Cluster (EMRC) University of Campinas , Campinas 13083-887 , SP , Brazil.,Instituto Nacional de Biomarcadores em Neuropsiquiatria (INBION) , Conselho Nacional de Desenvolvimento Cientı́fico e Tecnológico (CNPq) , São Paulo , Brazil
| | | | - Gabriel Reis Alves Carneiro
- Laboratory of Proteomics, LADETEC, Institute of Chemistry , Federal University of Rio de Janeiro , Rio de Janeiro 21941-598 , Brazil
| | - Andrea Schmitt
- Department of Psychiatry and Psychotherapy , Ludwig Maximilian University of Munich (LMU) , 80539 Munich , Germany
| | - Peter Falkai
- Department of Psychiatry and Psychotherapy , Ludwig Maximilian University of Munich (LMU) , 80539 Munich , Germany
| | - Gilberto B Domont
- Proteomics Unit, Department of Biochemistry, Institute of Chemistry , Federal University of Rio de Janeiro , Rio de Janeiro 21941-909 , Brazil
| | - Fabio C S Nogueira
- Proteomics Unit, Department of Biochemistry, Institute of Chemistry , Federal University of Rio de Janeiro , Rio de Janeiro 21941-909 , Brazil.,Laboratory of Proteomics, LADETEC, Institute of Chemistry , Federal University of Rio de Janeiro , Rio de Janeiro 21941-598 , Brazil
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6
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Wang X, Bai Y, Han Y, Meng J, Liu H. Downregulation of GBAS regulates oral squamous cell carcinoma proliferation and apoptosis via the p53 signaling pathway. Onco Targets Ther 2019; 12:3729-3742. [PMID: 31190874 PMCID: PMC6529179 DOI: 10.2147/ott.s207930] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 04/29/2019] [Indexed: 12/11/2022] Open
Abstract
Purpose: Oral squamous cell carcinoma (OSCC) is the most common and severe type of head and neck malignancy. The mechanisms by which OSCC arises depend on changes in a number of different factors and genes and the clinicopathological stage of the tumors. Better understanding the possible mechanisms of OSCC would help to identify a new target for molecular targeted therapy. The current study was focused on elucidating the significance of the glioblastoma-amplified sequence (GBAS) on malignant behaviors in OSCC, including proliferation and apoptosis. Patients and methods: In this study, we measured the levels of mRNA in OSCC and normal oral tissue samples using Affymetrix microarrays. We examined GBAS expression in OSCC tissues and the effect of GBAS knockdown on cell proliferation and apoptosis in vitro and in vivo. The mechanisms underlying GBAS were investigated. Results: In the present study, GBAS expression was substantially elevated in the majority of tested OSCC tissues. Further, knockdown of GBAS using lentiviral-delivered shRNA in cells had significant effects on cell proliferation, apoptosis and the cell cycle. A xenograft model was also used to assess the tumorigenicity of the GBAS knockdown on OSCC cells in vivo. Mechanistically, GBAS activated p53 signaling by regulating the mRNA and protein expression of CHEK1, AKT1, AKT2 and Bax. Finally, we also investigated the expression of GBAS in patients with OSCC, and the data revealed that GBAS expression was correlated with the rates of relapse and tumor grade. Conclusion: Our studies provide evidence that GBAS regulates OSCC cell proliferation and apoptosis via p53 signaling, which may be a candidate biomarker for the prognosis and treatment of OSCC.
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Affiliation(s)
- Xing Wang
- Department of Oral Medicine, Peking University School and Hospital of Stomatology, Beijing, People's Republic of China
| | - Yuting Bai
- Department of Oromaxillofacial-Head and Neck Surgery, Affiliated Xuzhou Hospital, College of Medicine, Southeast University, Xuzhou, JiangSu, People's Republic of China.,Department of Oral Medicine, Xuzhou Medical University, Xuzhou, JiangSu, People's Republic of China
| | - Ying Han
- Department of Oral Medicine, Peking University School and Hospital of Stomatology, Beijing, People's Republic of China
| | - Jian Meng
- Department of Oromaxillofacial-Head and Neck Surgery, Affiliated Xuzhou Hospital, College of Medicine, Southeast University, Xuzhou, JiangSu, People's Republic of China
| | - Hongwei Liu
- Department of Oral Medicine, Peking University School and Hospital of Stomatology, Beijing, People's Republic of China
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7
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Radhakrishnan S, Valenzuela N. Chromosomal Context Affects the Molecular Evolution of Sex-linked Genes and Their Autosomal Counterparts in Turtles and Other Vertebrates. J Hered 2018; 108:720-730. [PMID: 29036698 DOI: 10.1093/jhered/esx082] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Accepted: 09/20/2017] [Indexed: 12/11/2022] Open
Abstract
Sex chromosomes evolve differently from autosomes because natural selection acts distinctly on them given their reduced recombination and smaller population size. Various studies of sex-linked genes compared with different autosomal genes within species support these predictions. Here, we take a novel alternative approach by comparing the rate of evolution between subsets of genes that are sex-linked in selected reptiles/vertebrates and the same genes located in autosomes in other amniotes. We report for the first time the faster evolution of Z-linked genes in a turtle (the Chinese softshell turtle Pelodiscus sinensis) relative to autosomal orthologs in other taxa, including turtles with temperature-dependent sex determination (TSD). This faster rate was absent in its close relative, the spiny softshell turtle (Apalone spinifera), thus revealing important lineage effects, and was only surpassed by mammalian-X linked genes. In contrast, we found slower evolution of X-linked genes in the musk turtle Staurotypus triporcatus (XX/XY) and homologous Z-linked chicken genes. TSD lineages displayed overall faster sequence evolution than taxa with genotypic sex determination (GSD), ruling out global effects of GSD on molecular evolution beyond those by sex-linkage. Notably, results revealed a putative selective sweep around two turtle genes involved in vertebrate gonadogenesis (Pelodiscus-Z-linked Nf2 and Chrysemys-autosomal Tspan7). Our observations reveal important evolutionary changes at the gene level mediated by chromosomal context in turtles despite their low overall evolutionary rate and illuminate sex chromosome evolution by empirically testing expectations from theoretical models. Genome-wide analyses are warranted to test the generality and prevalence of the observed patterns.
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Affiliation(s)
- Srihari Radhakrishnan
- Bioinformatics and Computational Biology Program, Iowa State University, Ames, IA 50011
- Department of Ecology, Evolution and Organismal Biology, Iowa State University, Ames, IA 50011
| | - Nicole Valenzuela
- Department of Ecology, Evolution and Organismal Biology, Iowa State University, Ames, IA 50011
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8
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Fecher-Trost C, Wissenbach U, Weissgerber P. TRPV6: From identification to function. Cell Calcium 2017; 67:116-122. [PMID: 28501141 DOI: 10.1016/j.ceca.2017.04.006] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 04/26/2017] [Accepted: 04/26/2017] [Indexed: 12/20/2022]
Affiliation(s)
- Claudia Fecher-Trost
- Institute of Experimental and Clinical Pharmacology and Toxicology, Saarland University, Building 46, 66421 Homburg, Germany.
| | - Ulrich Wissenbach
- Institute of Experimental and Clinical Pharmacology and Toxicology, Saarland University, Building 46, 66421 Homburg, Germany
| | - Petra Weissgerber
- Institute of Experimental and Clinical Pharmacology and Toxicology, Saarland University, Building 46, 66421 Homburg, Germany.
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Mitochondrial proteins NIP-SNAP-1 and -2 are a target for the immunomodulatory activity of clarithromycin, which involves NF-κB-mediated cytokine production. Biochem Biophys Res Commun 2017; 483:911-916. [DOI: 10.1016/j.bbrc.2016.12.100] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 12/15/2016] [Indexed: 11/18/2022]
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10
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Yamamoto S, Okamoto T, Ogasawara N, Hashimoto S, Shiraishi T, Sato T, Yamamoto K, Tsutsumi H, Takano K, Himi T, Itoh H, Yokota SI. NIP-SNAP-1 and -2 mitochondrial proteins are maintained by heat shock protein 60. Biochem Biophys Res Commun 2017; 483:917-922. [DOI: 10.1016/j.bbrc.2016.12.133] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 12/20/2016] [Indexed: 01/16/2023]
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11
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Avenali L, Abate Fulas O, Sondermann J, Narayanan P, Gomez-Varela D, Schmidt M. Nocistatin sensitizes TRPA1 channels in peripheral sensory neurons. Channels (Austin) 2017; 11:11-19. [PMID: 27362459 DOI: 10.1080/19336950.2016.1207025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
The ability of sensory neurons to detect potentially harmful stimuli relies on specialized molecular signal detectors such as transient receptor potential (TRP) A1 ion channels. TRPA1 is critically implicated in vertebrate nociception and different pain states. Furthermore, TRPA1 channels are subject to extensive modulation and regulation - processes which consequently affect nociceptive signaling. Here we show that the neuropeptide Nocistatin sensitizes TRPA1-dependent calcium influx upon application of the TRPA1 agonist mustard oil (MO) in cultured sensory neurons of dorsal root ganglia (DRG). Interestingly, TRPV1-mediated cellular calcium responses are unaffected by Nocistatin. Furthermore, Nocistatin-induced TRPA1-sensitization is likely independent of the Nocistatin binding partner 4-Nitrophenylphosphatase domain and non-neuronal SNAP25-like protein homolog 1 (NIPSNAP1) as assessed by siRNA-mediated knockdown in DRG cultures. In conclusion, we uncovered the sensitization of TRPA1 by Nocistatin, which may represent a novel mechanism how Nocistatin can modulate pain.
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Affiliation(s)
- Luca Avenali
- a Max Planck Institute of Experimental Medicine, Somatosensory Signaling and Systems Biology Group , Goettingen , Germany
| | - Oli Abate Fulas
- a Max Planck Institute of Experimental Medicine, Somatosensory Signaling and Systems Biology Group , Goettingen , Germany
| | - Julia Sondermann
- a Max Planck Institute of Experimental Medicine, Somatosensory Signaling and Systems Biology Group , Goettingen , Germany
| | - Pratibha Narayanan
- a Max Planck Institute of Experimental Medicine, Somatosensory Signaling and Systems Biology Group , Goettingen , Germany
| | - David Gomez-Varela
- a Max Planck Institute of Experimental Medicine, Somatosensory Signaling and Systems Biology Group , Goettingen , Germany
| | - Manuela Schmidt
- a Max Planck Institute of Experimental Medicine, Somatosensory Signaling and Systems Biology Group , Goettingen , Germany
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12
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Pu F, Chen N, Xue S. Calcium intake, calcium homeostasis and health. FOOD SCIENCE AND HUMAN WELLNESS 2016. [DOI: 10.1016/j.fshw.2016.01.001] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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13
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Ukken FP, Bruckner JJ, Weir KL, Hope SJ, Sison SL, Birschbach RM, Hicks L, Taylor KL, Dent EW, Gonsalvez GB, O'Connor-Giles KM. BAR-SH3 sorting nexins are conserved interacting proteins of Nervous wreck that organize synapses and promote neurotransmission. J Cell Sci 2015; 129:166-77. [PMID: 26567222 PMCID: PMC4732300 DOI: 10.1242/jcs.178699] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Accepted: 11/11/2015] [Indexed: 12/13/2022] Open
Abstract
Nervous wreck (Nwk) is a conserved F-BAR protein that attenuates synaptic growth and promotes synaptic function in Drosophila. In an effort to understand how Nwk carries out its dual roles, we isolated interacting proteins using mass spectrometry. We report a conserved interaction between Nwk proteins and BAR-SH3 sorting nexins, a family of membrane-binding proteins implicated in diverse intracellular trafficking processes. In mammalian cells, BAR-SH3 sorting nexins induce plasma membrane tubules that localize NWK2, consistent with a possible functional interaction during the early stages of endocytic trafficking. To study the role of BAR-SH3 sorting nexins in vivo, we took advantage of the lack of genetic redundancy in Drosophila and employed CRISPR-based genome engineering to generate null and endogenously tagged alleles of SH3PX1. SH3PX1 localizes to neuromuscular junctions where it regulates synaptic ultrastructure, but not synapse number. Consistently, neurotransmitter release was significantly diminished in SH3PX1 mutants. Double-mutant and tissue-specific-rescue experiments indicate that SH3PX1 promotes neurotransmitter release presynaptically, at least in part through functional interactions with Nwk, and might act to distinguish the roles of Nwk in regulating synaptic growth and function.
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Affiliation(s)
- Fiona P Ukken
- Laboratory of Cell and Molecular Biology, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Joseph J Bruckner
- Cell and Molecular Biology Training Program, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Kurt L Weir
- Laboratory of Cell and Molecular Biology, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Sarah J Hope
- Laboratory of Cell and Molecular Biology, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Samantha L Sison
- Laboratory of Cell and Molecular Biology, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Ryan M Birschbach
- Laboratory of Cell and Molecular Biology, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Lawrence Hicks
- Cellular Biology and Anatomy, Georgia Regents University, Augusta, GA 30912, USA
| | - Kendra L Taylor
- Neuroscience Training Program, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Erik W Dent
- Neuroscience Training Program, University of Wisconsin-Madison, Madison, WI 53705, USA Department of Neuroscience, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Graydon B Gonsalvez
- Cellular Biology and Anatomy, Georgia Regents University, Augusta, GA 30912, USA
| | - Kate M O'Connor-Giles
- Laboratory of Cell and Molecular Biology, University of Wisconsin-Madison, Madison, WI 53706, USA Cell and Molecular Biology Training Program, University of Wisconsin-Madison, Madison, WI 53706, USA Laboratory of Genetics, University of Wisconsin-Madison, Madison, WI 53706, USA
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14
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Brittain JM, Wang Y, Wilson SM, Khanna R. Regulation of CREB signaling through L-type Ca2+channels by Nipsnap-2. Channels (Austin) 2014; 6:94-102. [DOI: 10.4161/chan.19415] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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15
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Nilius B, Szallasi A. Transient Receptor Potential Channels as Drug Targets: From the Science of Basic Research to the Art of Medicine. Pharmacol Rev 2014; 66:676-814. [DOI: 10.1124/pr.113.008268] [Citation(s) in RCA: 348] [Impact Index Per Article: 34.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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16
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Abstract
TRPV6 (former synonyms ECAC2, CaT1, CaT-like) displays several specific features which makes it unique among the members of the mammalian Trp gene family (1) TRPV6 (and its closest relative, TRPV5) are the only highly Ca(2+)-selective channels of the entire TRP superfamily (Peng et al. 1999; Wissenbach et al. 2001; Voets et al. 2004). (2) Translation of Trpv6 initiates at a non-AUG codon, at ACG, located upstream of the annotated AUG, which is not used for initiation (Fecher-Trost et al. 2013). The ACG codon is nevertheless decoded by methionine. Not only a very rare event in eukaryotic biology, the full-length TRPV6 protein existing in vivo comprises an amino terminus extended by 40 amino acid residues compared to the annotated truncated TRPV6 protein which has been used in most studies on TRPV6 channel activity so far. (In the following numbering occurs according to this full-length protein, with the numbers of the so far annotated truncated protein in brackets). (3) Only in humans a coupled polymorphism of Trpv6 exists causing three amino acid exchanges and resulting in an ancestral Trpv6 haplotype and a so-called derived Trpv6 haplotype (Wissenbach et al. 2001). The ancestral allele encodes the amino acid residues C197(157), M418(378) and M721(681) and the derived alleles R197(157), V418(378) and T721(681). The ancestral haplotype is found in all species, the derived Trpv6 haplotype has only been identified in humans, and its frequency increases with the distance to the African continent. Apparently the Trpv6 gene has been a strong target for selection in humans, and its derived variant is one of the few examples showing consistently differences to the orthologues genes of other primates (Akey et al. 2004, 2006; Stajich and Hahn 2005; Hughes et al. 2008). (4) The Trpv6 gene expression is significantly upregulated in several human malignancies including the most common cancers, prostate and breast cancer (Wissenbach et al. 2001; Zhuang et al. 2002; Fixemer et al. 2003; Bolanz et al. 2008). (5) Male mice lacking functional TRPV6 channels are hypo-/infertile making TRPV6 one of the very few channels essential for male fertility (Weissgerber et al. 2011, 2012).
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Affiliation(s)
- Claudia Fecher-Trost
- Institut für Experimentelle und Klinische Pharmakologie und Toxikologie, Universität des Saarlandes, 66421, Homburg, Germany
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17
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Malhotra A, Shibata Y, Hall IM, Dutta A. Chromosomal structural variations during progression of a prostate epithelial cell line to a malignant metastatic state inactivate the NF2, NIPSNAP1, UGT2B17, and LPIN2 genes. Cancer Biol Ther 2013; 14:840-52. [PMID: 23792589 PMCID: PMC3909553 DOI: 10.4161/cbt.25329] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Prostate cancer is the second highest cause of male cancer deaths in the United States. A significant number of tumors advance to a highly invasive and metastatic stage, which is typically resistant to traditional cancer therapeutics. In order to identify chromosomal structural variants that may contribute to prostate cancer progression we sequenced the genomes of a HPV-18 immortalized nonmalignant human prostate epithelial cell line, RWPE1, and compared it to its malignant, metastatic derivative, WPE1-NB26. There were a total of 34 large (> 1 Mbp) and 38 small copy number variants (<100 kbp) in WPE1-NB26 that were not present in the precursor cell line. We also identified and validated 46 structural variants present in the two cell lines, of which 23 were unique to WPE1-NB26. Structural variants unique to the malignant cell line inactivated: (1) the neurofibromin2 (NF2) gene, a known tumor suppressor; (2) its neighboring gene NIPSNAP1, another putative tumor suppressor that inhibits TRPV6, an anti-apoptotic oncogene implicated in prostate cancer progression; (3) UGT2B17, a gene that inactivates dihydrotestosterone, a known activator of prostate cancer progression; and (4) LPIN2, a phosphatidic acid phosphatase and a co-factor of PGC1a that is important for lipid metabolism and for suppressing autoinflammation. Our results illustrate the value of comparing the genomes of defined related pairs of cell lines to discover chromosomal structural variants that may contribute to cancer progression.
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Affiliation(s)
- Ankit Malhotra
- Department of Biochemistry and Molecular Genetics; University of Virginia School of Medicine; Charlottesville, VA USA
| | - Yoshiyuki Shibata
- Department of Biochemistry and Molecular Genetics; University of Virginia School of Medicine; Charlottesville, VA USA
| | - Ira M Hall
- Department of Biochemistry and Molecular Genetics; University of Virginia School of Medicine; Charlottesville, VA USA
| | - Anindya Dutta
- Department of Biochemistry and Molecular Genetics; University of Virginia School of Medicine; Charlottesville, VA USA
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18
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Kopic S, Geibel JP. Gastric acid, calcium absorption, and their impact on bone health. Physiol Rev 2013; 93:189-268. [PMID: 23303909 DOI: 10.1152/physrev.00015.2012] [Citation(s) in RCA: 102] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Calcium balance is essential for a multitude of physiological processes, ranging from cell signaling to maintenance of bone health. Adequate intestinal absorption of calcium is a major factor for maintaining systemic calcium homeostasis. Recent observations indicate that a reduction of gastric acidity may impair effective calcium uptake through the intestine. This article reviews the physiology of gastric acid secretion, intestinal calcium absorption, and their respective neuroendocrine regulation and explores the physiological basis of a potential link between these individual systems.
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Affiliation(s)
- Sascha Kopic
- Department of Surgery and Cellular and Molecular Physiology, Yale School of Medicine, New Haven, Connecticut, USA
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19
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Okuda-Ashitaka E, Minami T, Tsubouchi S, Kiyonari H, Iwamatsu A, Noda T, Handa H, Ito S. Identification of NIPSNAP1 as a nocistatin-interacting protein involving pain transmission. J Biol Chem 2012; 287:10403-10413. [PMID: 22311985 DOI: 10.1074/jbc.m111.271866] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
4-Nitrophenylphosphatase domain and non-neuronal SNAP25-like protein homolog 1 (NIPSNAP1) is a molecule of physiologically unknown function, although it is predominantly expressed in the brain, spinal cord, liver, and kidney. We identified NIPSNAP1 as a protein that interacts with the neuropeptide nocistatin (NST) from synaptosomal membranes of mouse spinal cord using high-performance affinity latex beads. NST, which is produced from the same precursor protein as an opioid-like neuropeptide nociceptin/orphanin FQ (N/OFQ), has opposite effects on pain transmission evoked by N/OFQ. The calculated full-length pre-protein of NIPSNAP1 was 33 kDa, whereas the N-terminal truncated form of NIPSNAP1 (29 kDa) was ubiquitously expressed in the neuronal tissues, especially in synaptic membrane and mitochondria of brain. The 29-kDa NIPSNAP1 was distributed on the cell surface, and NST interacted with the 29-kDa but not the 33-kDa NIPSNAP1. Although intrathecal injection of N/OFQ induced tactile allodynia in both wild-type and NIPSNAP1-deficient mice, the inhibition of N/OFQ-evoked tactile allodynia by NST seen in wild-type mice was completely lacking in the deficient mice. These results suggest that NIPSNAP1 is an interacting molecule of NST and plays a crucial role in pain transmission.
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Affiliation(s)
- Emiko Okuda-Ashitaka
- Department of Medical Chemistry, Kansai Medical University, Moriguchi 570-8506, Japan,; Department of Biomedical Engineering, Osaka Institute of Technology, Osaka 535-8585, Japan,.
| | - Toshiaki Minami
- Department of Anesthesiology, Osaka Medical College, Takatsuki 569-8686, Japan
| | - Shingo Tsubouchi
- Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Yokohama 226-8501, Japan
| | - Hiroshi Kiyonari
- Laboratory for Animal Resources and Genetic Engineering, RIKEN Center for Developmental Biology, Kobe 650-0047, Japan
| | | | - Tetsuo Noda
- Department of Cell Biology, Japanese Foundation for Cancer Research, Cancer Institute, Tokyo 135-8550, Japan
| | - Hiroshi Handa
- Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Yokohama 226-8501, Japan
| | - Seiji Ito
- Department of Medical Chemistry, Kansai Medical University, Moriguchi 570-8506, Japan
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20
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de Boer ME, Berg S, Timmermans MJTN, den Dunnen JT, van Straalen NM, Ellers J, Roelofs D. High throughput nano-liter RT-qPCR to classify soil contamination using a soil arthropod. BMC Mol Biol 2011; 12:11. [PMID: 21362169 PMCID: PMC3060125 DOI: 10.1186/1471-2199-12-11] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2010] [Accepted: 03/01/2011] [Indexed: 11/29/2022] Open
Abstract
Background To incorporate genomics data into environmental assessments a mechanistic perspective of interactions between chemicals and induced biological processes needs to be developed. Since chemical compounds with structural similarity often induce comparable biological responses in exposed animals, gene expression signatures can serve as a starting point for the assessment of chemicals and their toxicity, but only when relevant and stable gene panels are available. To design such a panel, we isolated differentially expressed gene fragments from the soil arthropod Folsomia candida, a species often used for ecotoxicological testing. Animals were exposed to two chemically distinct compounds, being a metal (cadmium) and a polycyclic aromatic hydrocarbon (phenanthrene). We investigated the affected molecular responses resulting from either treatment and developed and validated 44 qPCR assays for their responses using a high throughput nano-liter RT-qPCR platform for the analysis of the samples. Results Suppressive subtractive hybridization (SSH) was used to retrieve stress-related gene fragments. SSH libraries revealed pathways involved in mitochondrial dysfunction and protein degradation for cadmium and biotransformation for phenanthrene to be overrepresented. Amongst a small cluster of SSH-derived cadmium responsive markers were an inflammatory response protein and an endo-glucanase. Conversely, cytochrome P450 family 6 or 9 was specifically induced by phenanthrene. Differential expressions of these candidate biomarkers were also highly significant in the independently generated test sample set. Toxicity levels in different training samples were not reflected by any of the markers' intensity of expressions. Though, a model based on partial least squares differential analysis (PLS-DA) (with RMSEPs between 9 and 22% and R2s between 0.82 and 0.97) using gene expressions of 25 important qPCR assays correctly predicted the nature of exposures of test samples. Conclusions For the application of molecular bio-indication in environmental assessments, multivariate analyses obviously have an added value over univariate methods. Our results suggest that compound discrimination can be achieved by PLS-DA, based on a hard classification of the within-class rankings of samples from a test set. This study clearly shows that the use of high throughput RT-qPCR could be a valuable tool in ecotoxicology combining high throughput with analytical sensitivity.
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Affiliation(s)
- Muriel E de Boer
- VU University Amsterdam, Department of Ecological Science, De Boelelaan 1085, 1081 HV, Amsterdam, The Netherlands.
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21
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Dimke H, San-Cristobal P, de Graaf M, Lenders JW, Deinum J, Hoenderop JGJ, Bindels RJM. γ-Adducin stimulates the thiazide-sensitive NaCl cotransporter. J Am Soc Nephrol 2010; 22:508-17. [PMID: 21164023 DOI: 10.1681/asn.2010060606] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
The thiazide-sensitive NaCl cotransporter (NCC) plays a key role in renal salt reabsorption and the determination of systemic BP, but the molecular mechanisms governing the regulation of NCC are not completely understood. Here, through pull-down experiments coupled to mass spectrometry, we found that γ-adducin interacts with the NCC transporter. γ-Adducin colocalized with NCC to the distal convoluted tubule. (22)Na(+) uptake experiments in the Xenopus laevis oocyte showed that γ-adducin stimulated NCC activity in a dose-dependent manner, an effect that occurred upstream from With No Lysine (WNK) 4 kinase. The binding site of γ-adducin mapped to the N terminus of NCC and encompassed three previously reported phosphorylation sites. Supporting this site of interaction, competition with the N-terminal domain of NCC abolished the stimulatory effect of γ-adducin on the transporter. γ-Adducin failed to increase NCC activity when these phosphorylation sites were constitutively inactive or active. In addition, γ-adducin bound only to the dephosphorylated N terminus of NCC. Taken together, our observations suggest that γ-adducin dynamically regulates NCC, likely by amending the phosphorylation state, and consequently the activity, of the transporter. These data suggest that γ-adducin may influence BP homeostasis by modulating renal NaCl transport.
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Affiliation(s)
- Henrik Dimke
- Department of Physiology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
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22
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Smits P, Rodenburg RJ, Smeitink JAM, van den Heuvel LP. Sequence variants in four candidate genes (NIPSNAP1, GBAS, CHCHD1 and METT11D1) in patients with combined oxidative phosphorylation system deficiencies. J Inherit Metab Dis 2010; 33 Suppl 3:S13-9. [PMID: 24137763 DOI: 10.1007/s10545-009-0968-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The oxidative phosphorylation (OXPHOS) system, comprising five enzyme complexes, is located in the inner membrane of mitochondria and is the final biochemical pathway in oxidative ATP production. Defects in this energy-generating system can cause a wide range of clinical symptoms; these diseases are often progressive and multisystemic. Numerous genes have been implicated in OXPHOS deficiencies and many mutations have been described. However, in a substantial number of patients with decreased enzyme activities of two or more OXPHOS complexes, no mutations in the mitochondrial DNA or in nuclear genes known to be involved in these disorders have been found. In this study, four nuclear candidate genes--NIPSNAP1, GBAS, CHCHD1 and METT11D1--were screened for mutations in 22 patients with a combined enzymatic deficiency of primarily the OXPHOS complexes I, III and IV to determine whether a mutation in one of these genes could explain the mitochondrial disorder. For each variant not yet reported as a polymorphism, 100 control samples were screened for the presence of the variant. This way we identified 14 new polymorphisms and 2 presumably non-pathogenic mutations. No mutations were found that could explain the mitochondrial disorder in the patients investigated in this study. Therefore, the genetic defect in these patients must be located in other nuclear genes involved in mtDNA maintenance, transcription or translation, in import, processing or degradation of nuclear encoded mitochondrial proteins, or in assembly of the OXPHOS system.
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Affiliation(s)
- P Smits
- Department of Pediatrics, Nijmegen Centre for Mitochondrial Disorders, Radboud University Nijmegen Medical Centre, Geert Grooteplein 10, PO Box 9101, 6500 HB Nijmegen, The Netherlands
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23
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Wu LJ, Sweet TB, Clapham DE. International Union of Basic and Clinical Pharmacology. LXXVI. Current progress in the mammalian TRP ion channel family. Pharmacol Rev 2010; 62:381-404. [PMID: 20716668 DOI: 10.1124/pr.110.002725] [Citation(s) in RCA: 426] [Impact Index Per Article: 30.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Transient receptor potential (TRP) channels are a large family of ion channel proteins, surpassed in number in mammals only by voltage-gated potassium channels. TRP channels are activated and regulated through strikingly diverse mechanisms, making them suitable candidates for cellular sensors. They respond to environmental stimuli such as temperature, pH, osmolarity, pheromones, taste, and plant compounds, and intracellular stimuli such as Ca(2+) and phosphatidylinositol signal transduction pathways. However, it is still largely unknown how TRP channels are activated in vivo. Despite the uncertainties, emerging evidence using TRP channel knockout mice indicates that these channels have broad function in physiology. Here we review the recent progress on the physiology, pharmacology and pathophysiological function of mammalian TRP channels.
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Affiliation(s)
- Long-Jun Wu
- Howard Hughes Medical Institute, Department of Cardiology, Children's Hospital Boston, 320 Longwood Avenue, Boston, MA 02115, USA
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24
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Brizard JP, Ramos J, Robert A, Lafitte D, Bigi N, Sarda P, Laoudj-Chenivesse D, Navarro F, Blanc P, Assenat E, Maurel P, Pascussi JM, Vilarem MJ. Identification of proteomic changes during human liver development by 2D-DIGE and mass spectrometry. J Hepatol 2009; 51:114-26. [PMID: 19443070 DOI: 10.1016/j.jhep.2009.02.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2008] [Revised: 02/06/2009] [Accepted: 02/18/2009] [Indexed: 12/04/2022]
Abstract
BACKGROUND/AIMS The aim of this study was to identify human liver proteins that are associated with different stages of liver development. METHODS We collected liver samples from 14 fetuses between 14 and 41 weeks of development, one child and four adults. Proteins which exhibited consistent and significant variations during development by two-dimensional differential in gel electrophoresis (2D-DIGE) were subjected to peptide mass fingerprint analysis by MALDI-TOF mass spectrometry. Real-time PCR analysis confirmed, at the transcriptional level, the data obtained by the proteomic approach. RESULTS Among a total of 80 protein spots showing differential expression, we identified 42 different proteins or polypeptide chains, of which 26 were upregulated and 16 downregulated in developing in comparison to adult liver. These proteins could be classified in specific groups according to their function. By comparing their temporal expression profiles, we identified protein groups that were associated with different developmental stages of human fetal liver and suggest that the changes in protein expression observed during the 20- to 36-week time window play a pivotal role in liver development. CONCLUSIONS The identification of these proteins may represent good markers of human liver and stem cells differentiation.
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Affiliation(s)
- Jean Paul Brizard
- Institut de Recherche pour le Développement, UMR 5096 (CNRS-IRD-Université Perpignan), Montpellier, France
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