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Gentile AM, Lhamyani S, Mengual-Mesa M, García-Fuentes E, Bermúdez-Silva FJ, Rojo-Martínez G, Clemente-Postigo M, Rodriguez-Cañete A, Olveira G, El Bekay R. MiR-221-3p/222-3p Cluster Expression in Human Adipose Tissue Is Related to Obesity and Type 2 Diabetes. Int J Mol Sci 2023; 24:17449. [PMID: 38139277 PMCID: PMC10744326 DOI: 10.3390/ijms242417449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 12/05/2023] [Accepted: 12/09/2023] [Indexed: 12/24/2023] Open
Abstract
The progression of obesity and type 2 diabetes (T2D) is intricately linked with adipose tissue (AT) angiogenesis. Despite an established network of microRNAs (miRNAs) regulating AT function, the specific role of angiogenic miRNAs remains less understood. The miR-221/222 cluster has recently emerged as being associated with antiangiogenic activity. However, no studies have explored its role in human AT amidst the concurrent development of obesity and T2D. Therefore, this study aims to investigate the association between the miR-221-3p/222-3p cluster in human AT and its regulatory network with obesity and T2D. MiR-221-3p/222-3p and their target gene (TG) expression levels were quantified through qPCR in visceral (VAT) and subcutaneous (SAT) AT from patients (n = 33) categorized based on BMI as normoweight (NW) and obese (OB) and by glycemic status as normoglycemic (NG) and type 2 diabetic (T2D) subjects. In silico analyses of miR-221-3p/222-3p and their TGs were conducted to identify pertinent signaling pathways. The results of a multivariate analysis, considering the simultaneous expression of miR-221-3p and miR-222-3p as dependent variables, revealed statistically significant distinctions when accounting for variables such as tissue depot, obesity, sex, and T2D as independent factors. Furthermore, both miRNAs and their TGs exhibited differential expression patterns based on obesity severity, glycemic status, sex, and type of AT depot. Our in silico analysis indicated that miR-221-3p/222-3p cluster TGs predominantly participate in angiogenesis, WNT signaling, and apoptosis pathways. In conclusion, these findings underscore a promising avenue for future research, emphasizing the miR-221-3p/222-3p cluster and its associated regulatory networks as potential targets for addressing obesity and related metabolic disorders.
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Affiliation(s)
- Adriana-Mariel Gentile
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, 29580 Málaga, Spain; (A.-M.G.); (S.L.); (E.G.-F.); (F.-J.B.-S.); (G.R.-M.); (G.O.)
- Clinical Unit of Endocrinology and Nutrition, University Regional Hospital of Málaga, 29009 Málaga, Spain
| | - Said Lhamyani
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, 29580 Málaga, Spain; (A.-M.G.); (S.L.); (E.G.-F.); (F.-J.B.-S.); (G.R.-M.); (G.O.)
- Clinical Unit of Endocrinology and Nutrition, University Regional Hospital of Málaga, 29009 Málaga, Spain
- Spanish Biomedical Research Center in Physiopathology of Obesity and Nutrition (CIBERObn), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - María Mengual-Mesa
- Andalucía Tech, Faculty of Health Sciences, Department of Systems and Automation Engineering, School of Industrial Engineering, Universidad de Málaga, Teatinos Campus, 29071 Málaga, Spain;
| | - Eduardo García-Fuentes
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, 29580 Málaga, Spain; (A.-M.G.); (S.L.); (E.G.-F.); (F.-J.B.-S.); (G.R.-M.); (G.O.)
- Unidad de Gestión Clínica de Aparato Digestivo, Hospital Universitario Virgen de la Victoria, 29010 Málaga, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Instituto de Salud Carlos III, 28029 Málaga, Spain
| | - Francisco-Javier Bermúdez-Silva
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, 29580 Málaga, Spain; (A.-M.G.); (S.L.); (E.G.-F.); (F.-J.B.-S.); (G.R.-M.); (G.O.)
- Clinical Unit of Endocrinology and Nutrition, University Regional Hospital of Málaga, 29009 Málaga, Spain
- The Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Gemma Rojo-Martínez
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, 29580 Málaga, Spain; (A.-M.G.); (S.L.); (E.G.-F.); (F.-J.B.-S.); (G.R.-M.); (G.O.)
- Clinical Unit of Endocrinology and Nutrition, University Regional Hospital of Málaga, 29009 Málaga, Spain
- The Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Mercedes Clemente-Postigo
- Department of Endocrinology and Nutrition, Virgen de la Victoria University Hospital, 29010 Málaga, Spain
- Institute of Biomedical Research in Málaga (IBIMA)-Bionand Platform, 29590 Málaga, Spain
- Department of Cell Biology, Genetics, and Physiology, Faculty of Science, University of Málaga, 29010 Málaga, Spain
| | - Alberto Rodriguez-Cañete
- Unidad de Gestión Clínica de Cirugía General, Digestiva y Trasplantes, Hospital Regional Universitario de Málaga, 29010 Málaga, Spain;
| | - Gabriel Olveira
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, 29580 Málaga, Spain; (A.-M.G.); (S.L.); (E.G.-F.); (F.-J.B.-S.); (G.R.-M.); (G.O.)
- Clinical Unit of Endocrinology and Nutrition, University Regional Hospital of Málaga, 29009 Málaga, Spain
- The Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Instituto de Salud Carlos III, 28029 Madrid, Spain
- Departamento de Medicina y Cirugía, Universidad de Málaga, 29010 Málaga, Spain
| | - Rajaa El Bekay
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, 29580 Málaga, Spain; (A.-M.G.); (S.L.); (E.G.-F.); (F.-J.B.-S.); (G.R.-M.); (G.O.)
- Clinical Unit of Endocrinology and Nutrition, University Regional Hospital of Málaga, 29009 Málaga, Spain
- Spanish Biomedical Research Center in Physiopathology of Obesity and Nutrition (CIBERObn), Instituto de Salud Carlos III, 28029 Madrid, Spain
- IBIMA-Plataforma Bionand, Hospital Regional Universitario de Málaga, 29010 Málaga, Spain
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Plk4 Is a Novel Substrate of Protein Phosphatase 5. Int J Mol Sci 2023; 24:ijms24032033. [PMID: 36768356 PMCID: PMC9917060 DOI: 10.3390/ijms24032033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/13/2023] [Accepted: 01/17/2023] [Indexed: 01/21/2023] Open
Abstract
The conserved Ser/Thr protein phosphatase 5 (PP5) is involved in the regulation of key cellular processes, including DNA damage repair and cell division in eukaryotes. As a co-chaperone of Hsp90, PP5 has been shown to modulate the maturation and activity of numerous oncogenic kinases. Here, we identify a novel substrate of PP5, the Polo-like kinase 4 (Plk4), which is the master regulator of centriole duplication in animal cells. We show that PP5 specifically interacts with Plk4, and is able to dephosphorylate the kinase in vitro and in vivo, which affects the interaction of Plk4 with its partner proteins. In addition, we provide evidence that PP5 and Plk4 co-localize to the centrosomes in Drosophila embryos and cultured cells. We demonstrate that PP5 is not essential; the null mutant flies are viable without a severe mitotic phenotype; however, its loss significantly reduces the fertility of the animals. Our results suggest that PP5 is a novel regulator of the Plk4 kinase in Drosophila.
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Fu R, Shao Q, Yang B, Chen Y, Ye Q, Chen X, Zhu J. MiR-520a-5p/PPP5C regulation pattern is identified as the key to gemcitabine resistance in pancreatic cancer. Front Oncol 2022; 12:903484. [PMID: 35957917 PMCID: PMC9358958 DOI: 10.3389/fonc.2022.903484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 06/27/2022] [Indexed: 11/13/2022] Open
Abstract
Objective To explore the effects of the expression level of miR-520-5p/PPP5C in pancreatic cancer cells and exosomes on cell viability, angiogenesis, autophagy, which involved in the mechanism of gemcitabine resistance in pancreatic cancer. Methods APSC-1 cell line was treated with gemcitabine, after which its exosomes were extracted for NTA assay. Subsequently, the drug resistance of APSC-1 cells was assayed using CCK8, as well as the activity of HUVEC cells treated with exosomes from each group of APSC-1 cells after drug resistance treatment as well as overexpression treatment. Five groups of HUVEC cells treated with exosomes were subjected to in vitro tubule formation assay. levels of PPP5C in each group of ASPC-1 cells and their exosomes, levels of overexpressed PPP5C, and related exosomal proteins were examined by WB. mRNA expression levels of PPP5C and levels of miR-520a were examined by qPCR The relationship between miR-520a-5p and PPP5C was investigated. After that, the autophagy of PPP5C was detected. Finally, it was analyzed by TCGA database for survival prognosis analysis. Results APSC-1 cells had an IC50 value of 227.1 μM for gemcitabine, elevated PPP5C expression, drug resistance, and enhanced HUVEC cell activity; exosomes CD9, CD63, and CD81 were significantly expressed in all groups; meanwhile, enhanced PPP5C expression not only promoted in vitro tubule formation but also increased autophagy levels; meanwhile, its relationship with miR-520-5p and There was a targeted inhibitory relationship between its level and miR-520-5p and PPP5C, and its elevated level also led to a decrease in the survival level of patients over 3-5 years. Conclusion PPP5C has a prognostic role in pancreatic cancer by promoting the value-added and invasion of pancreatic cancer cells, and a targeted inhibitory relationship between miR-520-5p and PPP5C was found.
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Li B, Li P, Xia W, You B, Yu Q, Zhang B, Huang R, Wang R, Liu Y, Chen Z, Gan Y, He Y, Hennenberg M, Stief CG, Chen X. Phosphoproteomics identifies potential downstream targets of the integrin α2β1 inhibitor BTT-3033 in prostate stromal cells. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:1380. [PMID: 34733932 PMCID: PMC8506561 DOI: 10.21037/atm-21-3194] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 08/30/2021] [Indexed: 11/17/2022]
Abstract
Background Integrin α2β1 inhibitor BTT-3033 (1-(4-fluorophenyl)-N-methyl-N-[4[[(phenylamino)carbonyl]amino]phenyl]-1H-pyrazole-4-sulfonamide) was recently reported to inhibit neurogenic and thromboxane A2-induced human prostate smooth muscle contraction, and thus represents a target with a different inhibition spectrum than that of α1-blockers in benign prostate hyperplasia (BPH) treatments. Clarifying the underlying mechanisms of the inhibition effects will provide insights into the role of integrin α2β1 in prostate contraction and enable new intracellular targets for smooth muscle contraction to be explored. Methods ProteomeHD was used to predict and enrich the top co-regulated proteins of integrin α2 (ITGA2). A phosphoproteomic analysis was conducted on human prostate stromal cells (WPMY-1) treated with 1 or 10 µM of BTT-3033 or solvent for controls. A clustering analysis was conducted to identify the intracellular targets that were inhibited in a dose-dependent manner. Gene ontology (GO) and annotation enrichments were conducted to examine any functional alterations and identify possible downstream targets. A Kinase-substrate enrichment analysis (KSEA) was conducted to identify kinases-substrate relationships. Results Enrichments of the actin cytoskeleton and guanosine triphosphatases (GTPases) signaling were predicted from the co-regulated proteins with ITGA2. LIM domain kinases, including LIM domain and actin-binding 1 (LIMA1), zyxin (ZYX), and thyroid receptor-interacting protein 6 (TRIP6), which are functionally associated with focal adhesions and the cytoskeleton, were present in the clusters with dose-dependent phosphorylation inhibition pattern. 15 substrates were dose-dependently inhibited according to the KSEA, including polo-like kinase 1 (PLK1), and GTPases signaling proteins, such as disheveled segment polarity protein 2 (DVL2). Conclusions In this study, we proposed that the mechanisms underlying the contractile and proliferative effects of integrin α2β1 are the LIM domain kinases, including the ZYX family, and substrates, including PLK1 and DVL2.
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Affiliation(s)
- Bingsheng Li
- Department of Urology, Xiangya Hospital, Central South University, Changsha, China.,Department of Urology, University Hospital Munich, LMU Munich, Munich, Germany
| | - Pan Li
- Department of Pathology, LMU Munich, Munich, Germany
| | - Weiping Xia
- Department of Urology, Xiangya Hospital, Central South University, Changsha, China
| | - Baiyang You
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China.,Division of Cardiac Rehabilitation, Department of Physical Medicine and Rehabilitation, Xiangya Hospital, Central South University, Changsha, China
| | - Qingfeng Yu
- Department of Urology and Guangdong Key Laboratory of Urology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Bo Zhang
- Department of Urology, Xiangya Hospital, Central South University, Changsha, China
| | - Ru Huang
- Department of Urology, University Hospital Munich, LMU Munich, Munich, Germany
| | - Ruixiao Wang
- Department of Urology, University Hospital Munich, LMU Munich, Munich, Germany
| | - Yuhan Liu
- Department of Urology, University Hospital Munich, LMU Munich, Munich, Germany
| | - Zhi Chen
- Department of Urology, Xiangya Hospital, Central South University, Changsha, China
| | - Yu Gan
- Department of Urology, Xiangya Hospital, Central South University, Changsha, China
| | - Yao He
- Department of Urology, Xiangya Hospital, Central South University, Changsha, China
| | - Martin Hennenberg
- Department of Urology, University Hospital Munich, LMU Munich, Munich, Germany
| | - Christian G Stief
- Department of Urology, University Hospital Munich, LMU Munich, Munich, Germany
| | - Xiang Chen
- Department of Urology, Xiangya Hospital, Central South University, Changsha, China
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Shi Q, Chen YG. Regulation of Dishevelled protein activity and stability by post-translational modifications and autophagy. Trends Biochem Sci 2021; 46:1003-1016. [PMID: 34433516 DOI: 10.1016/j.tibs.2021.07.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 07/16/2021] [Accepted: 07/30/2021] [Indexed: 01/18/2023]
Abstract
As a key component of Wnt signaling, Dishevelled (Dvl/Dsh) plays essential roles in development processes and adult tissue homeostasis in multicellular organisms, and its deregulation results in human development disorders and other diseases. Dvl integrates and relays complex Wnt signals by acting as a branch-point of β-catenin-dependent canonical and β-catenin-independent noncanonical pathways. It dynamically interacts with multiple proteins to modulate Wnt signaling, while its activity and stability are tightly controlled by other proteins. This Review summarizes the current understanding of regulation of Dvl activity, localization, and stability by post-translational modifications, aggregation, and autophagy, and the impacts on Dvl function in both Wnt signaling and biological processes.
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Affiliation(s)
- Qiaoni Shi
- The State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, 100084, China
| | - Ye-Guang Chen
- The State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, 100084, China.
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Neumann J, Boknik P, Kirchhefer U, Gergs U. The role of PP5 and PP2C in cardiac health and disease. Cell Signal 2021; 85:110035. [PMID: 33964402 DOI: 10.1016/j.cellsig.2021.110035] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 04/16/2021] [Accepted: 05/03/2021] [Indexed: 02/08/2023]
Abstract
Protein phosphatases are important, for example, as functional antagonists of β-adrenergic stimulation of the mammalian heart. While β-adrenergic stimulations increase the phosphorylation state of regulatory proteins and therefore force of contraction in the heart, these phosphorylations are reversed and thus force is reduced by the activity of protein phosphatases. In this context the role of PP5 and PP2C is starting to unravel. They do not belong to the same family of phosphatases with regard to sequence homology, many similarities with regard to location, activation by lipids and putative substrates have been worked out over the years. We also suggest which pathways for regulation of PP5 and/or PP2C described in other tissues and not yet in the heart might be useful to look for in cardiac tissue. Both phosphatases might play a role in signal transduction of sarcolemmal receptors in the heart. Expression of PP5 and PP2C can be increased by extracellular stimuli in the heart. Because PP5 is overexpressed in failing animal and human hearts, and because overexpression of PP5 or PP2C leads to cardiac hypertrophy and KO of PP5 leads to cardiac hypotrophy, one might argue for a role of PP5 and PP2C in heart failure. Because PP5 and PP2C can reduce, at least in vitro, the phosphorylation state of proteins thought to be relevant for cardiac arrhythmias, a role of these phosphatases for cardiac arrhythmias is also probable. Thus, PP5 and PP2C might be druggable targets to treat important cardiac diseases like heart failure, cardiac hypertrophy and cardiac arrhythmias.
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Affiliation(s)
- Joachim Neumann
- Institut für Pharmakologie und Toxikologie, Medizinische Fakultät, Martin-Luther-Universität Halle-Wittenberg, Magdeburger Str. 4, D-06097 Halle, Germany.
| | - Peter Boknik
- Institut für Pharmakologie und Toxikologie, Medizinische Fakultät, Westfälische Wilhelms-Universität, Domagkstraße 12, D-48149 Münster, Germany.
| | - Uwe Kirchhefer
- Institut für Pharmakologie und Toxikologie, Medizinische Fakultät, Westfälische Wilhelms-Universität, Domagkstraße 12, D-48149 Münster, Germany.
| | - Ulrich Gergs
- Institut für Pharmakologie und Toxikologie, Medizinische Fakultät, Martin-Luther-Universität Halle-Wittenberg, Magdeburger Str. 4, D-06097 Halle, Germany.
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Zhang X, Wang J, Pan Y, Zhao J, Pan Y, Yan Y, Shen Z. MicroRNA-365b-3p represses the proliferation and promotes the apoptosis of non-small cell lung cancer cells by targeting PPP5C. Oncol Lett 2021; 21:389. [PMID: 33777212 PMCID: PMC7988734 DOI: 10.3892/ol.2021.12650] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 05/13/2020] [Indexed: 12/25/2022] Open
Abstract
MicroRNA (miR)-365b-3p has been recently reported to induce cell cycle arrest and apoptosis in retinoblastoma; however, its expression pattern and biological function in non-small cell lung cancer (NSCLC) remain unknown. The present study aimed to investigate the functional role of miR-365b-3p in NSCLC. The results demonstrated that miR-365b-3p expression level was significantly decreased in NSCLC tissues and cell lines compared with controls using reverse transcriptase quantitative PCR. Furthermore, miR-365b-3p expression level was overexpressed by miR-365b-3p mimics transfection in A549 cells, whereas it was downregulated following H1299 cell transfection with miR-365b-3p inhibitor. Restoration of miR-365b-3p inhibited cell proliferation, induced cell cycle G0/G1 arrest and stimulated apoptosis in A549 cells using CCK-8 assay, colony formation and flow cytometry assay. However, miR-365b-3p inhibitor had the opposite effects in H1299 cells. Furthermore, results from bioinformatics analysis and luciferase reporter assay confirmed that serine/threonine protein phosphatase 5 (PPP5C) was a direct target of miR-365b-3p. In addition, online Kaplan-Meier plotter software demonstrated that high PPP5C expression level was associated with lower overall survival and disease-free survival in patients with NSCLC. Furthermore, PPP5C knockdown imitated the effects of miR-365b-3p mimics on A549 cell proliferation, cell cycle distribution and apoptosis, whereas its overexpression rescued the effects of miR-365b-3p mimics on A549 cell proliferation, cell cycle distribution and apoptosis. In conclusion, the findings from the present study suggested that miR-365b-3p may partly suppress NSCLC cell behaviors by targeting PPP5C, which may represent a promising therapeutic target for patients with NSCLC.
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Affiliation(s)
- Xiaomiao Zhang
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Soochow University, Suzhou 215006, P.R. China
- Department of Thoracic Surgery, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai 200080, P.R. China
| | - Jin Wang
- Department of Thoracic Surgery, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai 200080, P.R. China
| | - Yuqin Pan
- Nursing Department, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai 200080, P.R. China
| | - Jun Zhao
- Nursing Department, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai 200080, P.R. China
| | - Yingge Pan
- Nursing Department, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai 200080, P.R. China
| | - Yunqi Yan
- Nursing Department, Shanghai General Hospital, Shanghai Jiao Tong University, Shanghai 200080, P.R. China
| | - Zhenya Shen
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Soochow University, Suzhou 215006, P.R. China
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Tian T, Cao X, Chen Y, Jin L, Li Z, Han X, Lin Y, Wlodarczyk BJ, Finnell RH, Yuan Z, Wang L, Ren A, Lei Y. Somatic and de novo Germline Variants of MEDs in Human Neural Tube Defects. Front Cell Dev Biol 2021; 9:641831. [PMID: 33748132 PMCID: PMC7969791 DOI: 10.3389/fcell.2021.641831] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 02/15/2021] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Neural tube defects (NTDs) are among the most common and severe congenital defects in humans. Their genetic etiology is complex and remains poorly understood. The Mediator complex (MED) plays a vital role in neural tube development in animal models. However, no studies have yet examined the role of its human homolog in the etiology of NTDs. METHODS In this study, 48 pairs of neural lesion site and umbilical cord tissues from NTD and 21 case-parent trios were involved in screening for NTD-related somatic and germline de novo variants. A series of functional cell assays were performed. We generated a Med12 p.Arg1784Cys knock-in mouse using CRISPR/Cas9 technology to validate the human findings. RESULTS One somatic variant, MED12 p.Arg1782Cys, was identified in the lesion site tissue from an NTD fetus. This variant was absent in any other normal tissue from different germ layers of the same case. In 21 case-parent trios, one de novo stop-gain variant, MED13L p.Arg1760∗, was identified. Cellular functional studies showed that MED12 p.Arg1782Cys decreased MED12 protein level and affected the regulation of MED12 on the canonical-WNT signaling pathway. The Med12 p.Arg1784Cys knock-in mouse exhibited exencephaly and spina bifida. CONCLUSION These findings provide strong evidence that functional variants of MED genes are associated with the etiology of some NTDs. We demonstrated a potentially important role for somatic variants in the occurrence of NTDs. Our study is the first study in which an NTD-related variant identified in humans was validated in mice using CRISPR/Cas9 technology.
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Affiliation(s)
- Tian Tian
- National Health Commission Key Laboratory of Reproductive Health, Institute of Reproductive and Child Health, Peking University, Beijing, China
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China
| | - Xuanye Cao
- Department of Molecular and Cellular Biology, Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, United States
| | - Yongyan Chen
- National Health Commission Key Laboratory of Reproductive Health, Institute of Reproductive and Child Health, Peking University, Beijing, China
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China
| | - Lei Jin
- National Health Commission Key Laboratory of Reproductive Health, Institute of Reproductive and Child Health, Peking University, Beijing, China
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China
| | - Zhiwen Li
- National Health Commission Key Laboratory of Reproductive Health, Institute of Reproductive and Child Health, Peking University, Beijing, China
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China
| | - Xiao Han
- Department of Molecular and Cellular Biology, Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, United States
| | - Ying Lin
- Department of Molecular and Cellular Biology, Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, United States
| | - Bogdan J. Wlodarczyk
- Department of Molecular and Cellular Biology, Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, United States
| | - Richard H. Finnell
- Department of Molecular and Cellular Biology, Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, United States
- Departments of Molecular and Human Genetics and Medicine, Baylor College of Medicine, Houston, TX, United States
| | - Zhengwei Yuan
- Key Laboratory of Health Ministry for Congenital Malformation, Shengjing Hospital, China Medical University, Shenyang, China
| | - Linlin Wang
- National Health Commission Key Laboratory of Reproductive Health, Institute of Reproductive and Child Health, Peking University, Beijing, China
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China
| | - Aiguo Ren
- National Health Commission Key Laboratory of Reproductive Health, Institute of Reproductive and Child Health, Peking University, Beijing, China
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China
| | - Yunping Lei
- Department of Molecular and Cellular Biology, Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, United States
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Sheng X, Sheng Y, Gao S, Fan F, Wang J. Low fluid shear stress promoted ciliogenesis via Dvl2 in hUVECs. Histochem Cell Biol 2020; 154:639-654. [PMID: 32776193 DOI: 10.1007/s00418-020-01908-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/29/2020] [Indexed: 01/30/2023]
Abstract
This study aims to explore the mechanism of fluid shear stress in regulating the primary cilia assembly or disassembly in human umbilical vein endothelial cells (hUVECs) using microfluidic chamber experiments. Immunofluorescence analysis showed that primary cilia assembled under disturbed fluid shear stress (DF) of 1 dyne/cm2, while disassembled under unidirectional shear stress (USS) of 15 dynes/cm2. Disheveled (Dvl2) in Wnt signaling pathway was effectively co-immunoprecipitated with Bardet-Biedl syndrome proteins 8 (Bbs8) and γ-tubulin. Compared with those in the control group, the percentages of ciliated cells with Dvl2 overexpression were found to be 67% and 59.667%, respectively, under USS and DF (an increment of 21-38.7%); while, those with Dvl2 silencing were 16% and 32.667%, respectively, under USS and DF (a decrement of 23-30%). Further, the expression of Bbs8 and γ-tubulin was decreased by RNA interference of Dvl2 but increased with Dvl2 overexpression. The results indicated that Dvl2 played a pivotal role during DF-induced primary cilia assembly, and was important for apical docking of basal bodies through Bbs8 and γ-tubulin.
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Affiliation(s)
- Xin Sheng
- Department of Biochemistry, Zunyi Medical University, Zunyi, 563000, People's Republic of China.
| | - Yan Sheng
- Laboratory of Basic Medical Morphology, Zunyi Medical University, Zunyi, 563000, People's Republic of China
| | - Shuanglin Gao
- Department of Biochemistry, Zunyi Medical University, Zunyi, 563000, People's Republic of China
| | - Fang Fan
- Department of Biochemistry, Zunyi Medical University, Zunyi, 563000, People's Republic of China
| | - Junhua Wang
- Department of Biochemistry, Zunyi Medical University, Zunyi, 563000, People's Republic of China
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Mapping Cellular Polarity Networks Using Mass Spectrometry-based Strategies. J Mol Biol 2018; 430:3545-3564. [DOI: 10.1016/j.jmb.2018.05.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 05/11/2018] [Accepted: 05/14/2018] [Indexed: 11/22/2022]
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