1
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Simanov G, Rocques N, Romero S, de Koning L, Vacher S, Dubois T, Bièche I, Gautreau AM. The Arp2/3 inhibitory protein Arpin inhibits homology-directed DNA repair. Biol Cell 2024:e2400073. [PMID: 39118570 DOI: 10.1111/boc.202400073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2024] [Accepted: 07/10/2024] [Indexed: 08/10/2024]
Abstract
BACKGROUND INFORMATION Arpin, an Arp2/3 inhibitory protein, inhibits lamellipodial protrusions and cell migration. Arpin expression is lost in tumor cells of several cancer types. RESULTS Here we analyzed expression levels of Arpin and various markers using Reverse Phase Protein Array (RPPA) in human mammary carcinomas. We found that Arpin protein levels were correlated with those of several DNA damage response markers. Arpin-null cells display enhanced clustering of double stand breaks (DSBs) when cells are treated with a DNA damaging agent, in line with a previously described role of the Arp2/3 complex in promoting DSB clustering for homologous DNA repair (HDR) in the nucleus. Using a specific HDR assay, we further showed that Arpin depletion increased HDR efficiency two-fold through its ability to inactivate the Arp2/3 complex. CONCLUSIONS Arpin regulates both cell migration in the cytosol and HDR in the nucleus. SIGNIFICANCE Loss of Arpin expression coordinates enhanced cell migration with up-regulated DNA repair, which is required when DNA damage is induced by active cell migration.
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Affiliation(s)
- Gleb Simanov
- Laboratory of Structural Biology of the Cell (BIOC), UMR7654 CNRS/Ecole polytechnique, Institut Polytechnique de Paris, Palaiseau, France
| | - Nathalie Rocques
- Laboratory of Structural Biology of the Cell (BIOC), UMR7654 CNRS/Ecole polytechnique, Institut Polytechnique de Paris, Palaiseau, France
| | - Stéphane Romero
- Laboratory of Structural Biology of the Cell (BIOC), UMR7654 CNRS/Ecole polytechnique, Institut Polytechnique de Paris, Palaiseau, France
| | - Leanne de Koning
- Department of Translational Research, Institut Curie, PSL Research University, Paris, France
| | - Sophie Vacher
- Department of Genetics, Pharmacogenomics Unit, Institut Curie, Paris, France
| | - Thierry Dubois
- Department of Translational Research, Institut Curie, PSL Research University, Paris, France
| | - Ivan Bièche
- Department of Genetics, Pharmacogenomics Unit, Institut Curie, Paris, France
| | - Alexis M Gautreau
- Laboratory of Structural Biology of the Cell (BIOC), UMR7654 CNRS/Ecole polytechnique, Institut Polytechnique de Paris, Palaiseau, France
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2
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Xu L, Zhang S, Feng J, Tan D, Sun H, Guo H. ncRNAs-mediated overexpression of STIL predict unfavorable prognosis and correlated with the efficacy of immunotherapy of hepatocellular carcinoma. Cancer Cell Int 2023; 23:44. [PMID: 36899391 PMCID: PMC10007768 DOI: 10.1186/s12935-023-02869-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Accepted: 02/13/2023] [Indexed: 03/12/2023] Open
Abstract
BACKGROUND STIL centriolar assembly protein (STIL) is a cytoplasmic protein implicated in cellular growth and proliferation as well as chromosomal stability, which abnormal condition affected tumor immunity and tumor progression. However, the role of STIL in the biological mechanism of hepatocellular carcinoma (HCC) remains unclear. METHODS Comprehensive bioinformatic approaches, in vitro functional assays, and validation were conducted to elucidate the oncogenic value of STIL in HCC. RESULTS In the present study, we found that STIL may serve as an independent prognostic indicator and a potential oncogene in HCC. Gene set enrichment analysis (GSEA), and Gene set variation analysis (GSVA) showed that upregulated expression of STIL was positively associated with pathways enriched in the cell cycle and DNA damage response. Subsequently, we identified several non-coding RNAs (ncRNAs) accounting for the upregulation of STIL expression using a combination of in silico bioinformatics approaches (including expression analysis, correlation analysis, and survival analysis). Finally, CCNT2-AS1/SNHG1-has-miR-204-5p-STIL axis was screened out as the most potential upstream ncRNA-related pathway of STIL in HCC. Moreover, STIL expression is highly associated with the infiltration of immune cells, the expression of immune checkpoints, as well as the survival benefit of immunotherapy/chemotherapy. CONCLUSIONS Our study discloses that ncRNAs-mediated overexpression of STIL independently predicted poor prognosis and correlated with the efficacy of PD-1-targeted immunotherapy in HCC.
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Affiliation(s)
- Longwen Xu
- Department of Medical Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, People's Republic of China
| | - Shirong Zhang
- Department of Medical Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, People's Republic of China
| | - Jinteng Feng
- Department of Medical Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, People's Republic of China
| | - Deli Tan
- Department of Medical Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, People's Republic of China
| | - Hong Sun
- Department of Medical Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, People's Republic of China
| | - Hui Guo
- Department of Medical Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, People's Republic of China.
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3
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Zhang S, Xu L, Feng J, Tan D, Zhu Y, Hou J, Li W, Lv K, Wang W, Jiang L, Jiao M, Guo H. ASF1B is a Promising Prognostic Biomarker and Correlates With Immunotherapy Efficacy in Hepatocellular Carcinoma. Front Genet 2022; 13:842351. [PMID: 35360875 PMCID: PMC8960381 DOI: 10.3389/fgene.2022.842351] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 02/22/2022] [Indexed: 12/12/2022] Open
Abstract
Background: Anti-silencing function 1B (ASF1B), a histone H3-H4 chaperone, is crucial for S-phase progression and cell proliferation. Recent studies have shown that ASF1B may be used as a new proliferation marker for cancer prognosis. However, the prognostic value and effect of ASF1B on tumor cells and the immune microenvironment in hepatocellular carcinoma (HCC) remain unclear. Methods: We analyzed the expression of ASF1B and its prognostic value using The Cancer Genome Atlas (TCGA) database (as a training set) and other databases, and we validated the findings by immunohistochemistry in our clinical database, containing 141 HCC patients (as a validation set). Gene set enrichment analysis (GSEA) and gene set variation analysis (GSVA) were performed to probe the tumor-associated biological processes of ASF1B in HCC. The interrelationships between ASF1B expression and tumor immunological characteristics were analyzed by multiple databases. The Imvigor210 cohort was retrieved to assess the ability of ASF1B to predict immunotherapy efficacy. Results: ASF1B was highly expressed in tumor tissue compared to paracancerous tissue. High ASF1B expression was associated with worse overall survival (OS) and progression-free survival (PFS) in the training set (p = 0.005, p < 0.001) and validation set (p < 0.001, p < 0.001). Multivariate analysis revealed that ASF1B was an independent prognostic factor associated with OS and PFS. GSEA and GSVA suggested that ASF1B was involved in tumor-associated biological processes, including the cell cycle, DNA replication, base excision repair, mismatch repair, RNA degradation, ubiquitin-mediated proteolysis, and nucleotide excision repair. Further analysis revealed that the levels of ASF1B were positively correlated with the immune cells infiltration of B cells, CD8+ T cells, CD4+ T cells, neutrophils, and dendritic cells. However, ASF1B was positively correlated with Treg cell infiltration and inhibitory immune checkpoints in exhausted T cells. Patients who received anti-PD-L1 immunotherapy with high ASF1B expression had a higher objective response. Conclusion: The ASF1B level is an independent prognostic factor and may serve as a potential immunotherapeutic target.
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Affiliation(s)
- Shirong Zhang
- Department of Medical Oncology, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Longwen Xu
- Department of Medical Oncology, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Jinteng Feng
- Department of Medical Oncology, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Deli Tan
- Department of Medical Oncology, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Yue Zhu
- Department of Medical Oncology, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Jia Hou
- Department of Medical Oncology, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Wenyuan Li
- Department of Medical Oncology, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Kejia Lv
- Department of Medical Oncology, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Wenjuan Wang
- Department of Medical Oncology, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Lili Jiang
- Department of Medical Oncology, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Min Jiao
- Department of Medical Oncology, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Hui Guo
- Department of Medical Oncology, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
- Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education of China, Xi’an Jiaotong University, Xi’an, China
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi’an Jiaotong University, Xi’an, China
- *Correspondence: Hui Guo,
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4
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Gautreau AM, Fregoso FE, Simanov G, Dominguez R. Nucleation, stabilization, and disassembly of branched actin networks. Trends Cell Biol 2021; 32:421-432. [PMID: 34836783 PMCID: PMC9018471 DOI: 10.1016/j.tcb.2021.10.006] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 10/19/2021] [Accepted: 10/22/2021] [Indexed: 12/18/2022]
Abstract
Arp2/3 complex is an actin filament nucleation and branching machinery conserved in all eukaryotes from yeast to human. Arp2/3 complex branched networks generate pushing forces that drive cellular processes ranging from membrane remodeling to cell and organelle motility. Several molecules regulate these processes by directly inhibiting or activating Arp2/3 complex and by stabilizing or disassembling branched networks. Here, we review recent advances in our understanding of Arp2/3 complex regulation, including high-resolution cryoelectron microscopy (cryo-EM) structures that illuminate the mechanisms of Arp2/3 complex activation and branch formation, and novel cellular pathways of branch formation, stabilization, and debranching. We also identify major gaps in our understanding of Arp2/3 complex inhibition and branch stabilization and disassembly.
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Affiliation(s)
- Alexis M Gautreau
- Laboratoire de Biologie Structurale de la Cellule, CNRS, École Polytechnique, Institut Polytechnique de Paris, 91128 Palaiseau, France.
| | - Fred E Fregoso
- Department of Physiology and Biochemistry and Molecular Biophysics Graduate Group, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Gleb Simanov
- Laboratoire de Biologie Structurale de la Cellule, CNRS, École Polytechnique, Institut Polytechnique de Paris, 91128 Palaiseau, France
| | - Roberto Dominguez
- Department of Physiology and Biochemistry and Molecular Biophysics Graduate Group, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
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5
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Chánez-Paredes S, Montoya-García A, Castro-Ochoa KF, García-Cordero J, Cedillo-Barrón L, Shibayama M, Nava P, Flemming S, Schlegel N, Gautreau AM, Vargas-Robles H, Mondragón-Flores R, Schnoor M. The Arp2/3 Inhibitory Protein Arpin Is Required for Intestinal Epithelial Barrier Integrity. Front Cell Dev Biol 2021; 9:625719. [PMID: 34012961 PMCID: PMC8128147 DOI: 10.3389/fcell.2021.625719] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 03/17/2021] [Indexed: 12/23/2022] Open
Abstract
The intestinal epithelial barrier (IEB) depends on stable interepithelial protein complexes such as tight junctions (TJ), adherens junctions (AJ), and the actin cytoskeleton. During inflammation, the IEB is compromised due to TJ protein internalization and actin remodeling. An important actin regulator is the actin-related protein 2/3 (Arp2/3) complex, which induces actin branching. Activation of Arp2/3 by nucleation-promoting factors is required for the formation of epithelial monolayers, but little is known about the relevance of Arp2/3 inhibition and endogenous Arp2/3 inhibitory proteins for IEB regulation. We found that the recently identified Arp2/3 inhibitory protein arpin was strongly expressed in intestinal epithelial cells. Arpin expression decreased in response to tumor necrosis factor (TNF)α and interferon (IFN)γ treatment, whereas the expression of gadkin and protein interacting with protein C-kinase α-subunit 1 (PICK1), other Arp2/3 inhibitors, remained unchanged. Of note, arpin coprecipitated with the TJ proteins occludin and claudin-1 and the AJ protein E-cadherin. Arpin depletion altered the architecture of both AJ and TJ, increased actin filament content and actomyosin contractility, and significantly increased epithelial permeability, demonstrating that arpin is indeed required for maintaining IEB integrity. During experimental colitis in mice, arpin expression was also decreased. Analyzing colon tissues from ulcerative colitis patients by Western blot, we found different arpin levels with overall no significant changes. However, in acutely inflamed areas, arpin was significantly reduced compared to non-inflamed areas. Importantly, patients receiving mesalazine had significantly higher arpin levels than untreated patients. As arpin depletion (theoretically meaning more active Arp2/3) increased permeability, we wanted to know whether Arp2/3 inhibition would show the opposite. Indeed, the specific Arp2/3 inhibitor CK666 ameliorated TNFα/IFNγ-induced permeability in established Caco-2 monolayers by preventing TJ disruption. CK666 treatment also attenuated colitis development, colon tissue damage, TJ disruption, and permeability in dextran sulphate sodium (DSS)-treated mice. Our results demonstrate that loss of arpin triggers IEB dysfunction during inflammation and that low arpin levels can be considered a novel hallmark of acute inflammation.
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Affiliation(s)
| | | | | | | | | | - Mineko Shibayama
- Department of Infectomics and Molecular Pathogenesis, CINVESTAV-IPN, Mexico City, Mexico
| | - Porfirio Nava
- Department of Physiology, Biophysics and Neurosciences, CINVESTAV-IPN, Mexico City, Mexico
| | - Sven Flemming
- Department of Surgery I, University Hospital Würzburg, Würzburg, Germany
| | - Nicolas Schlegel
- Department of Surgery I, University Hospital Würzburg, Würzburg, Germany
| | | | | | | | - Michael Schnoor
- Department of Molecular Biomedicine, CINVESTAV-IPN, Mexico City, Mexico
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6
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Simanov G, Dang I, Fokin AI, Oguievetskaia K, Campanacci V, Cherfils J, Gautreau AM. Arpin Regulates Migration Persistence by Interacting with Both Tankyrases and the Arp2/3 Complex. Int J Mol Sci 2021; 22:ijms22084115. [PMID: 33923443 PMCID: PMC8073056 DOI: 10.3390/ijms22084115] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 04/11/2021] [Accepted: 04/13/2021] [Indexed: 01/10/2023] Open
Abstract
During cell migration, protrusion of the leading edge is driven by the polymerization of Arp2/3-dependent branched actin networks. Migration persistence is negatively regulated by the Arp2/3 inhibitory protein Arpin. To better understand Arpin regulation in the cell, we looked for its interacting partners and identified both Tankyrase 1 and 2 (TNKS) using a yeast two-hybrid screening and coimmunoprecipitation with full-length Arpin as bait. Arpin interacts with ankyrin repeats of TNKS through a C-terminal-binding site on its acidic tail, which overlaps with the Arp2/3-binding site. Arpin was found to dissolve the liquid–liquid phase separation of TNKS upon overexpression. To uncouple the interactions of Arpin with TNKS and Arp2/3, we introduced point mutations in the Arpin tail and attempted to rescue the increased migration persistence of the Arpin knockout cells using random plasmid integration or compensating knock-ins at the ARPIN locus. Arpin mutations impairing interactions with either Arp2/3 or TNKS were insufficient to fully abolish Arpin activity. Only the mutation that affected both interactions rendered Arpin completely inactive, suggesting the existence of two independent pathways, whereby Arpin controls the migration persistence.
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Affiliation(s)
- Gleb Simanov
- CNRS UMR7654, Institut Polytechnique de Paris, 91120 Palaiseau, France; (G.S.); (I.D.); (A.I.F.); (K.O.)
| | - Irene Dang
- CNRS UMR7654, Institut Polytechnique de Paris, 91120 Palaiseau, France; (G.S.); (I.D.); (A.I.F.); (K.O.)
| | - Artem I. Fokin
- CNRS UMR7654, Institut Polytechnique de Paris, 91120 Palaiseau, France; (G.S.); (I.D.); (A.I.F.); (K.O.)
| | - Ksenia Oguievetskaia
- CNRS UMR7654, Institut Polytechnique de Paris, 91120 Palaiseau, France; (G.S.); (I.D.); (A.I.F.); (K.O.)
| | - Valérie Campanacci
- Laboratoire d’Enzymologie et Biochimie Structurales, CNRS, 91190 Gif-sur-Yvette, France; (V.C.); (J.C.)
| | - Jacqueline Cherfils
- Laboratoire d’Enzymologie et Biochimie Structurales, CNRS, 91190 Gif-sur-Yvette, France; (V.C.); (J.C.)
| | - Alexis M. Gautreau
- CNRS UMR7654, Institut Polytechnique de Paris, 91120 Palaiseau, France; (G.S.); (I.D.); (A.I.F.); (K.O.)
- Correspondence: ; Tel.: +33-169334870
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7
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Jiang W, Li H, Liu X, Zhang J, zhang W, Li T, Liu L, Yu X. Precise and efficient silencing of mutant Kras G12D by CRISPR-CasRx controls pancreatic cancer progression. Theranostics 2020; 10:11507-11519. [PMID: 33052229 PMCID: PMC7545986 DOI: 10.7150/thno.46642] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 08/31/2020] [Indexed: 12/12/2022] Open
Abstract
Rationale: Pancreatic ductal adenocarcinoma (PDAC) is a highly lethal disease with few therapeutic targets and rare effective treatments. Over 90% of PDAC tumors bear a Kras mutation, and the single-site mutation G12D (KrasG12D) is most prevalent. Methods: Here, we applied the CRISPR-CasRx system to silence the mutant KrasG12D transcript in PDAC cells. We also used a capsid-optimized adenovirus-associated virus 8 vector (AAV8) to deliver the CRISPR-CasRx system into PDAC orthotopic tumors and patient-derived tumor xenografts (PDX). Results: Our data showed that guided by a KrasG12D-specific gRNA, CasRx is able to precisely and efficiently silence the mutant KrasG12D expression in PDAC cells. The knockdown of mutant KrasG12D by CasRx abolishes the aberrant activation of downstream signaling induced by mutant KrasG12D and subsequently suppresses the tumor growth and improves the sensitivity of gemcitabine in PDAC. Additionally, delivering CasRx-gRNA via AAV8 into the orthotopic KrasG12D PDAC tumors substantially improves the survival of mice without obvious toxicity. Furthermore, targeting KrasG12D through CasRx suppresses the growth of PDAC PDXs. In conclusion, our study provides a proof-of-concept that CRISPR-CasRx can be utilized to target and silence mutant KrasG12D transcripts and therefore inhibit PDAC malignancy.
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Affiliation(s)
- Wang Jiang
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, PR China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, PR China
- Shanghai Pancreatic Cancer Institute, Shanghai 200032, PR China
- Pancreatic Cancer Institute, Fudan University, Shanghai 200032, PR China
| | - Hao Li
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, PR China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, PR China
- Shanghai Pancreatic Cancer Institute, Shanghai 200032, PR China
- Pancreatic Cancer Institute, Fudan University, Shanghai 200032, PR China
| | - Xiyu Liu
- Department of Breast Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, PR China
| | - Jianping Zhang
- Department of Nuclear Medicine, Fudan University Shanghai Cancer Centre, Shanghai 200032, PR China
| | - Wuhu zhang
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, PR China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, PR China
- Shanghai Pancreatic Cancer Institute, Shanghai 200032, PR China
- Pancreatic Cancer Institute, Fudan University, Shanghai 200032, PR China
| | - Tianjiao Li
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, PR China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, PR China
- Shanghai Pancreatic Cancer Institute, Shanghai 200032, PR China
- Pancreatic Cancer Institute, Fudan University, Shanghai 200032, PR China
| | - Liang Liu
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, PR China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, PR China
- Shanghai Pancreatic Cancer Institute, Shanghai 200032, PR China
- Pancreatic Cancer Institute, Fudan University, Shanghai 200032, PR China
| | - Xianjun Yu
- Department of Pancreatic Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, PR China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, PR China
- Shanghai Pancreatic Cancer Institute, Shanghai 200032, PR China
- Pancreatic Cancer Institute, Fudan University, Shanghai 200032, PR China
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8
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Li H, Jiang W, Liu XN, Yuan LY, Li TJ, Li S, Xu SS, Zhang WH, Gao HL, Han X, Wang WQ, Wu CT, Yu XJ, Xu HX, Liu L. TET1 downregulates epithelial-mesenchymal transition and chemoresistance in PDAC by demethylating CHL1 to inhibit the Hedgehog signaling pathway. Oncogene 2020; 39:5825-5838. [PMID: 32753651 DOI: 10.1038/s41388-020-01407-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 07/05/2020] [Accepted: 07/23/2020] [Indexed: 12/14/2022]
Abstract
Chemoresistance is a major obstacle to prolonging pancreatic ductal adenocarcinoma (PDAC) patient survival. TET1 is identified as the most important epigenetic modification enzyme that facilitates chemoresistance in cancers. However, the chemoresistance mechanism of TET1 in PDAC is unknown. This study aimed to determine the role of TET1 in the chemoresistance of PDAC. TET1-associated chemoresistance in PDAC was investigated in vitro and in vivo. The clinical significance of TET1 was analyzed in 228 PDAC patients by tissue microarray profiling. We identified that TET1 downregulation is caused by its promoter hypermethylation and correlates with poor survival in PDAC patients. In vitro and in vivo functional studies performed by silencing or overexpressing TET1 suggested that TET1 is able to suppress epithelial-mesenchymal transition (EMT) and sensitize PDAC cells to 5FU and gemcitabine. Then RNA-seq, whole genome bisulfite sequencing (WGBS) and ChIP-seq were used to explore the TET1-associated pathway, and showed that TET1 promotes the transcription of CHL1 by binding and demethylating the CHL1 promoter, which consequently inhibits the Hedgehog pathway. Additionally, inhibiting Hedgehog signaling by CHL1 overexpression or the Hedgehog pathway inhibitor, GDC-0449, reversed the chemoresistance induced by TET1 silencing. Regarding clinical significance, we found that high TET1 and high CHL1 expression predicted a better prognosis in resectable PDAC patients. In summary, we demonstrated that TET1 reverses chemoresistance in PDAC by downregulating the CHL1-associated Hedgehog signaling pathway. PDAC patients with a high expression levels of TET1 and CHL1 have a better prognosis.
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MESH Headings
- Biomarkers, Tumor
- Carcinoma, Pancreatic Ductal/genetics
- Carcinoma, Pancreatic Ductal/metabolism
- Carcinoma, Pancreatic Ductal/mortality
- Carcinoma, Pancreatic Ductal/pathology
- Cell Adhesion Molecules/genetics
- Cell Line, Tumor
- CpG Islands
- DNA Methylation
- Drug Resistance, Neoplasm/genetics
- Epithelial-Mesenchymal Transition/genetics
- Fluorouracil/pharmacology
- Gene Expression Regulation, Neoplastic
- Gene Silencing
- Hedgehog Proteins/metabolism
- Humans
- Mixed Function Oxygenases/genetics
- Models, Biological
- Pancreatic Neoplasms/genetics
- Pancreatic Neoplasms/metabolism
- Pancreatic Neoplasms/mortality
- Pancreatic Neoplasms/pathology
- Prognosis
- Promoter Regions, Genetic
- Proto-Oncogene Proteins/genetics
- Signal Transduction
- Pancreatic Neoplasms
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Affiliation(s)
- Hao Li
- Department of Pancreatic Surgery, Shanghai Cancer Centre, Fudan University, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- Shanghai Pancreatic Cancer Institute, Shanghai, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, China
| | - Wang Jiang
- Department of Pancreatic Surgery, Shanghai Cancer Centre, Fudan University, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- Shanghai Pancreatic Cancer Institute, Shanghai, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, China
| | - Xue-Ni Liu
- Department of General Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Li-Yun Yuan
- Bio-Med Big Data Center, CAS-MPG Partner Institute for Computational Biology, Shanghai Institutes of Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Tian-Jiao Li
- Department of Pancreatic Surgery, Shanghai Cancer Centre, Fudan University, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- Shanghai Pancreatic Cancer Institute, Shanghai, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, China
| | - Shuo Li
- Department of Pancreatic Surgery, Shanghai Cancer Centre, Fudan University, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- Shanghai Pancreatic Cancer Institute, Shanghai, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, China
| | - Shuai-Shuai Xu
- Department of Pancreatic Surgery, Shanghai Cancer Centre, Fudan University, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- Shanghai Pancreatic Cancer Institute, Shanghai, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, China
| | - Wu-Hu Zhang
- Department of Pancreatic Surgery, Shanghai Cancer Centre, Fudan University, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- Shanghai Pancreatic Cancer Institute, Shanghai, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, China
| | - He-Li Gao
- Department of Pancreatic Surgery, Shanghai Cancer Centre, Fudan University, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- Shanghai Pancreatic Cancer Institute, Shanghai, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, China
| | - Xuan Han
- Department of Pancreatic Surgery, Shanghai Cancer Centre, Fudan University, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- Shanghai Pancreatic Cancer Institute, Shanghai, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, China
| | - Wen-Quan Wang
- Department of Pancreatic Surgery, Shanghai Cancer Centre, Fudan University, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- Shanghai Pancreatic Cancer Institute, Shanghai, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, China
| | - Chun-Tao Wu
- Department of Pancreatic Surgery, Shanghai Cancer Centre, Fudan University, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- Shanghai Pancreatic Cancer Institute, Shanghai, China
- Pancreatic Cancer Institute, Fudan University, Shanghai, China
| | - Xian-Jun Yu
- Department of Pancreatic Surgery, Shanghai Cancer Centre, Fudan University, Shanghai, China.
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China.
- Shanghai Pancreatic Cancer Institute, Shanghai, China.
- Pancreatic Cancer Institute, Fudan University, Shanghai, China.
| | - Hua-Xiang Xu
- Department of Pancreatic Surgery, Shanghai Cancer Centre, Fudan University, Shanghai, China.
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China.
- Shanghai Pancreatic Cancer Institute, Shanghai, China.
- Pancreatic Cancer Institute, Fudan University, Shanghai, China.
| | - Liang Liu
- Department of Pancreatic Surgery, Shanghai Cancer Centre, Fudan University, Shanghai, China.
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China.
- Shanghai Pancreatic Cancer Institute, Shanghai, China.
- Pancreatic Cancer Institute, Fudan University, Shanghai, China.
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Chánez-Paredes S, Montoya-García A, Schnoor M. Cellular and pathophysiological consequences of Arp2/3 complex inhibition: role of inhibitory proteins and pharmacological compounds. Cell Mol Life Sci 2019; 76:3349-3361. [PMID: 31073744 PMCID: PMC11105272 DOI: 10.1007/s00018-019-03128-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 04/30/2019] [Accepted: 05/02/2019] [Indexed: 02/06/2023]
Abstract
The actin-related protein complex 2/3 (Arp2/3) generates branched actin networks important for many cellular processes such as motility, vesicular trafficking, cytokinesis, and intercellular junction formation and stabilization. Activation of Arp2/3 requires interaction with actin nucleation-promoting factors (NPFs). Regulation of Arp2/3 activity is achieved by endogenous inhibitory proteins through direct binding to Arp2/3 and competition with NPFs or by binding to Arp2/3-induced actin filaments and disassembly of branched actin networks. Arp2/3 inhibition has recently garnered more attention as it has been associated with attenuation of cancer progression, neurotoxic effects during drug abuse, and pathogen invasion of host cells. In this review, we summarize current knowledge on expression, inhibitory mechanisms and function of endogenous proteins able to inhibit Arp2/3 such as coronins, GMFs, PICK1, gadkin, and arpin. Moreover, we discuss cellular consequences of pharmacological Arp2/3 inhibition.
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Affiliation(s)
- Sandra Chánez-Paredes
- Department for Molecular Biomedicine, CINVESTAV-IPN, Av. IPN 2508, San Pedro Zacatenco, GAM, 07360, Mexico City, Mexico
| | - Armando Montoya-García
- Department for Molecular Biomedicine, CINVESTAV-IPN, Av. IPN 2508, San Pedro Zacatenco, GAM, 07360, Mexico City, Mexico
| | - Michael Schnoor
- Department for Molecular Biomedicine, CINVESTAV-IPN, Av. IPN 2508, San Pedro Zacatenco, GAM, 07360, Mexico City, Mexico.
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