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Zeng RJ, Xie WJ, Zheng CW, Chen WX, Wang SM, Li Z, Cheng CB, Zou HY, Xu LY, Li EM. Role of Rho guanine nucleotide exchange factors in non-small cell lung cancer. Bioengineered 2021; 12:11169-11187. [PMID: 34783629 PMCID: PMC8810164 DOI: 10.1080/21655979.2021.2006519] [Citation(s) in RCA: 4] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 10/12/2021] [Accepted: 10/13/2021] [Indexed: 02/05/2023] Open
Abstract
Conventionally, Rho guanine nucleotide exchange factors (GEFs) are known activators of Rho guanosine triphosphatases (GTPases) that promote tumorigenesis. However, the role of Rho GEFs in non-small cell lung cancer (NSCLC) remains largely unknown. Through the screening of 81 Rho GEFs for their expression profiles and correlations with survival, four of them were identified with strong significance for predicting the prognosis of NSCLC patients. The four Rho GEFs, namely ABR, PREX1, DOCK2 and DOCK4, were downregulated in NSCLC tissues compared to normal tissues. The downregulation of ABR, PREX1, DOCK2 and DOCK4, which can be attributfed to promoter methylation, is correlated with poor prognosis. The underexpression of the four key Rho GEFs might be related to the upregulation of MYC signaling and DNA repair pathways, leading to carcinogenesis and poor prognosis. Moreover, overexpression of ABR was shown to have a tumor-suppressive effect in PC9 and H1703 cells. In conclusion, the data reveal the unprecedented role of ABR as tumor suppressor in NSCLC. The previously unnoticed functions of Rho GEFs in NSCLC will inspire researchers to investigate the distinct roles of Rho GEFs in cancers, in order to provide critical strategies in clinical practice.
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Affiliation(s)
- Rui-Jie Zeng
- Department of Biochemistry and Molecular Biology, Shantou University Medical College, ShantouChina
- The Key Laboratory of Molecular Biology for High Cancer Incidence Coastal Chaoshan Area, Shantou University Medical College, ShantouChina
- Department of Gastroenterology, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, GuangzhouChina
| | - Wei-Jie Xie
- Department of Biochemistry and Molecular Biology, Shantou University Medical College, ShantouChina
- The Key Laboratory of Molecular Biology for High Cancer Incidence Coastal Chaoshan Area, Shantou University Medical College, ShantouChina
| | - Chun-Wen Zheng
- Department of Biochemistry and Molecular Biology, Shantou University Medical College, ShantouChina
- The Key Laboratory of Molecular Biology for High Cancer Incidence Coastal Chaoshan Area, Shantou University Medical College, ShantouChina
| | - Wan-Xian Chen
- Department of Biochemistry and Molecular Biology, Shantou University Medical College, ShantouChina
- The Key Laboratory of Molecular Biology for High Cancer Incidence Coastal Chaoshan Area, Shantou University Medical College, ShantouChina
| | - Si-Meng Wang
- Department of Biochemistry and Molecular Biology, Shantou University Medical College, ShantouChina
- The Key Laboratory of Molecular Biology for High Cancer Incidence Coastal Chaoshan Area, Shantou University Medical College, ShantouChina
| | - Zheng Li
- Department of Biochemistry and Molecular Biology, Shantou University Medical College, ShantouChina
- The Key Laboratory of Molecular Biology for High Cancer Incidence Coastal Chaoshan Area, Shantou University Medical College, ShantouChina
| | - Chi-Bin Cheng
- Department of Biochemistry and Molecular Biology, Shantou University Medical College, ShantouChina
- The Key Laboratory of Molecular Biology for High Cancer Incidence Coastal Chaoshan Area, Shantou University Medical College, ShantouChina
| | - Hai-Ying Zou
- Department of Biochemistry and Molecular Biology, Shantou University Medical College, ShantouChina
- The Key Laboratory of Molecular Biology for High Cancer Incidence Coastal Chaoshan Area, Shantou University Medical College, ShantouChina
| | - Li-Yan Xu
- Department of Biochemistry and Molecular Biology, Shantou University Medical College, ShantouChina
- Institute of Oncologic Pathology, Shantou University Medical College, ShantouChina
- CONTACT Li-Yan Xu Institute of Oncologic Pathology, Shantou University Medical College, Shantou515041, China
| | - En-Min Li
- Department of Biochemistry and Molecular Biology, Shantou University Medical College, ShantouChina
- The Key Laboratory of Molecular Biology for High Cancer Incidence Coastal Chaoshan Area, Shantou University Medical College, ShantouChina
- En-Min Li The Key Laboratory of Molecular Biology for High Cancer Incidence Coastal Chaoshan Area Shantou University Medical College, Shantou515041, China
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Bernadzki KM, Daszczuk P, Rojek KO, Pęziński M, Gawor M, Pradhan BS, de Cicco T, Bijata M, Bijata K, Włodarczyk J, Prószyński TJ, Niewiadomski P. Arhgef5 Binds α-Dystrobrevin 1 and Regulates Neuromuscular Junction Integrity. Front Mol Neurosci 2020; 13:104. [PMID: 32587503 PMCID: PMC7299196 DOI: 10.3389/fnmol.2020.00104] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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: 02/27/2020] [Accepted: 05/13/2020] [Indexed: 01/09/2023] Open
Abstract
The neuromuscular junctions (NMJs) connect muscle fibers with motor neurons and enable the coordinated contraction of skeletal muscles. The dystrophin-associated glycoprotein complex (DGC) is an essential component of the postsynaptic machinery of the NMJ and is important for the maintenance of NMJ structural integrity. To identify novel proteins that are important for NMJ organization, we performed a mass spectrometry-based screen for interactors of α-dystrobrevin 1 (aDB1), one of the components of the DGC. The guanidine nucleotide exchange factor (GEF) Arhgef5 was found to be one of the aDB1 binding partners that is recruited to Tyr-713 in a phospho-dependent manner. We show here that Arhgef5 localizes to the NMJ and that its genetic depletion in the muscle causes the fragmentation of the synapses in conditional knockout mice. Arhgef5 loss in vivo is associated with a reduction in the levels of active GTP-bound RhoA and Cdc42 GTPases, highlighting the importance of actin dynamics regulation for the maintenance of NMJ integrity.
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Affiliation(s)
- Krzysztof M Bernadzki
- Laboratory of Synaptogenesis, Nencki Institute of Experimental Biology, Warsaw, Poland
| | - Patrycja Daszczuk
- Laboratory of Synaptogenesis, Nencki Institute of Experimental Biology, Warsaw, Poland
| | - Katarzyna O Rojek
- Laboratory of Synaptogenesis, Nencki Institute of Experimental Biology, Warsaw, Poland.,Institute of Physical Chemistry, Polish Academy of Sciences, Warsaw, Poland
| | - Marcin Pęziński
- Laboratory of Synaptogenesis, Nencki Institute of Experimental Biology, Warsaw, Poland
| | - Marta Gawor
- Laboratory of Synaptogenesis, Nencki Institute of Experimental Biology, Warsaw, Poland
| | - Bhola S Pradhan
- Laboratory of Synaptogenesis, Nencki Institute of Experimental Biology, Warsaw, Poland
| | - Teresa de Cicco
- Laboratory of Synaptogenesis, Nencki Institute of Experimental Biology, Warsaw, Poland
| | - Monika Bijata
- Laboratory of Cell Biophysics, Nencki Institute of Experimental Biology, Warsaw, Poland
| | - Krystian Bijata
- Laboratory of Cell Biophysics, Nencki Institute of Experimental Biology, Warsaw, Poland
| | - Jakub Włodarczyk
- Laboratory of Cell Biophysics, Nencki Institute of Experimental Biology, Warsaw, Poland
| | - Tomasz J Prószyński
- Laboratory of Synaptogenesis, Nencki Institute of Experimental Biology, Warsaw, Poland.,Łukasiewicz Research Network - PORT Polish Center for Technology Development, Wrocław, Poland
| | - Paweł Niewiadomski
- Laboratory of Synaptogenesis, Nencki Institute of Experimental Biology, Warsaw, Poland.,Laboratory of Molecular and Cellular Signaling, Centre of New Technologies, University of Warsaw, Warsaw, Poland
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Rodríguez-Fdez S, Citterio C, Lorenzo-Martín LF, Baltanás-Copado J, Llorente-González C, Corbalán-García S, Vicente-Manzanares M, Bustelo XR. Phosphatidylinositol Monophosphates Regulate Optimal Vav1 Signaling Output. Cells 2019; 8:cells8121649. [PMID: 31888228 PMCID: PMC6952945 DOI: 10.3390/cells8121649] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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: 11/22/2019] [Revised: 12/12/2019] [Accepted: 12/13/2019] [Indexed: 01/13/2023] Open
Abstract
Phosphatidylinositol–5 phosphate (PI5P) and other mono-phosphoinositides (mono-PIs) play second messenger roles in both physiological and pathological conditions. Despite this, their intracellular targets and mechanisms of action remain poorly characterized. Here, we show that Vav1, a protein that exhibits both Rac1 GDP/GTP exchange and adaptor activities, is positively modulated by PI5P and, possibly, other mono-PIs. Unlike other phospholipid–protein complexes, the affinity and specificity of the Vav1–lipid interaction entail a new structural solution that involves the synergistic action of the Vav1 C1 domain and an adjacent polybasic tail. This new regulatory layer, which is not conserved in the Vav family paralogs, favors the engagement of optimal Vav1 signaling outputs in lymphocytes.
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Affiliation(s)
- Sonia Rodríguez-Fdez
- Centro de Investigación del Cáncer, CSIC–University of Salamanca, 37007 Salamanca, Spain; (S.R.-F.); (C.C.); (L.F.L.-M.); (C.L.-G.); (M.V.-M.)
- Instituto de Biología Molecular y Celular del Cáncer, CSIC–University of Salamanca, 37007 Salamanca, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), CSIC–University of Salamanca, 37007 Salamanca, Spain
| | - Carmen Citterio
- Centro de Investigación del Cáncer, CSIC–University of Salamanca, 37007 Salamanca, Spain; (S.R.-F.); (C.C.); (L.F.L.-M.); (C.L.-G.); (M.V.-M.)
- Instituto de Biología Molecular y Celular del Cáncer, CSIC–University of Salamanca, 37007 Salamanca, Spain
| | - L. Francisco Lorenzo-Martín
- Centro de Investigación del Cáncer, CSIC–University of Salamanca, 37007 Salamanca, Spain; (S.R.-F.); (C.C.); (L.F.L.-M.); (C.L.-G.); (M.V.-M.)
- Instituto de Biología Molecular y Celular del Cáncer, CSIC–University of Salamanca, 37007 Salamanca, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), CSIC–University of Salamanca, 37007 Salamanca, Spain
| | - Jesús Baltanás-Copado
- Department of Biochemistry and Molecular Biology, University of Murcia, 30100 Murcia, Spain; (J.B.-C.); (S.C.-G.)
- Biomedical Research Institute of Murcia, University of Murcia, 30100 Murcia, Spain
| | - Clara Llorente-González
- Centro de Investigación del Cáncer, CSIC–University of Salamanca, 37007 Salamanca, Spain; (S.R.-F.); (C.C.); (L.F.L.-M.); (C.L.-G.); (M.V.-M.)
- Instituto de Biología Molecular y Celular del Cáncer, CSIC–University of Salamanca, 37007 Salamanca, Spain
| | - Senena Corbalán-García
- Department of Biochemistry and Molecular Biology, University of Murcia, 30100 Murcia, Spain; (J.B.-C.); (S.C.-G.)
- Biomedical Research Institute of Murcia, University of Murcia, 30100 Murcia, Spain
| | - Miguel Vicente-Manzanares
- Centro de Investigación del Cáncer, CSIC–University of Salamanca, 37007 Salamanca, Spain; (S.R.-F.); (C.C.); (L.F.L.-M.); (C.L.-G.); (M.V.-M.)
- Instituto de Biología Molecular y Celular del Cáncer, CSIC–University of Salamanca, 37007 Salamanca, Spain
| | - Xosé R. Bustelo
- Centro de Investigación del Cáncer, CSIC–University of Salamanca, 37007 Salamanca, Spain; (S.R.-F.); (C.C.); (L.F.L.-M.); (C.L.-G.); (M.V.-M.)
- Instituto de Biología Molecular y Celular del Cáncer, CSIC–University of Salamanca, 37007 Salamanca, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), CSIC–University of Salamanca, 37007 Salamanca, Spain
- Correspondence:
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Bustelo XR, Lorenzo-Martín LF, Cuadrado M, Fernández-Pisonero I, Robles-Valero J. An unexpected tumor suppressor role for VAV1 a. Mol Cell Oncol 2018; 5:e1432257. [PMID: 30250888 DOI: 10.1080/23723556.2018.1432257] [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: 12/13/2017] [Revised: 12/13/2017] [Accepted: 12/13/2017] [Indexed: 01/07/2023]
Abstract
RHO GDP/GTP exchange factors, including VAV1, are considered key protumorigenic factors. Against this paradigm, we have found that VAV1 plays tumor suppressor roles by buffering NOTCH1 signals in thymocytes. The silencing of this pathway contributes to the pathogenesis of T cell acute lymphoblastic leukemia of the early cortical, TLX+ subtype.
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Affiliation(s)
- Xosé R Bustelo
- Centro de Investigación del Cáncer, CSIC-University of Salamanca, Salamanca, Spain.,Instituto de Biología Molecular y Celular del Cáncer, CSIC-University of Salamanca, Salamanca, Spain.,Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), CSIC-University of Salamanca, Salamanca, Spain
| | - L Francisco Lorenzo-Martín
- Centro de Investigación del Cáncer, CSIC-University of Salamanca, Salamanca, Spain.,Instituto de Biología Molecular y Celular del Cáncer, CSIC-University of Salamanca, Salamanca, Spain.,Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), CSIC-University of Salamanca, Salamanca, Spain
| | - Myriam Cuadrado
- Centro de Investigación del Cáncer, CSIC-University of Salamanca, Salamanca, Spain.,Instituto de Biología Molecular y Celular del Cáncer, CSIC-University of Salamanca, Salamanca, Spain.,Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), CSIC-University of Salamanca, Salamanca, Spain
| | - Isabel Fernández-Pisonero
- Centro de Investigación del Cáncer, CSIC-University of Salamanca, Salamanca, Spain.,Instituto de Biología Molecular y Celular del Cáncer, CSIC-University of Salamanca, Salamanca, Spain
| | - Javier Robles-Valero
- Centro de Investigación del Cáncer, CSIC-University of Salamanca, Salamanca, Spain.,Instituto de Biología Molecular y Celular del Cáncer, CSIC-University of Salamanca, Salamanca, Spain.,Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), CSIC-University of Salamanca, Salamanca, Spain
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Abstract
Cell migration is a highly regulated multistep process that requires the coordinated regulation of cell adhesion, protrusion, and contraction. These processes require numerous protein–protein interactions and the activation of specific signaling pathways. The Rho family of GTPases plays a key role in virtually every aspect of the cell migration cycle. The activation of Rho GTPases is mediated by a large and diverse family of proteins; the guanine nucleotide exchange factors (RhoGEFs). GEFs work immediately upstream of Rho proteins to provide a direct link between Rho activation and cell–surface receptors for various cytokines, growth factors, adhesion molecules, and G protein-coupled receptors. The regulated targeting and activation of RhoGEFs is essential to coordinate the migratory process. In this review, we summarize the recent advances in our understanding of the role of RhoGEFs in the regulation of cell migration.
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Key Words
- DH, Dbl-homology
- DHR, DOCK homology region
- DOCK, dedicator of cytokinesis
- ECM, extracellular matrix
- EGF, epidermal growth factor
- FA, focal adhesion
- FN, fibronectin
- GAP, GTPase activating protein
- GDI, guanine nucleotide dissociation inhibitor
- GEF, guanine nucleotide exchange factor
- GPCR, G protein-coupled receptor
- HGF, hepatocyte growth factor
- LPA, lysophosphatidic acid
- MII, myosin II
- PA, phosphatidic acid
- PDGF, platelet-derived growth factor
- PH, pleckstrin-homology
- PIP2, phosphatidylinositol 4, 5-bisphosphate
- PIP3, phosphatidylinositol (3, 4, 5)-trisphosphate.
- Rho GEFs
- Rho GTPases
- bFGF, basic fibroblast growth factor
- cell migration
- cell polarization
- focal adhesions
- guanine nucleotide exchange factors
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Affiliation(s)
- Silvia M Goicoechea
- a Department of Biological Sciences ; University of Toledo ; Toledo , OH USA
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