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Sahasrabudhe DM, Liesveld JL, Minhajuddin M, Singh NA, Nath S, Kumar VM, Balys M, Evans AG, Azadniv M, Hansen JN, Becker MW, Sharon A, Thomas VK, Moore RG, Khera MK, Jordan CT, Singh RK. In silico predicted compound targeting the IQGAP1-GRD domain selectively inhibits growth of human acute myeloid leukemia. Sci Rep 2024; 14:12868. [PMID: 38834690 PMCID: PMC11150481 DOI: 10.1038/s41598-024-63392-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Accepted: 05/28/2024] [Indexed: 06/06/2024] Open
Abstract
Acute myeloid leukemia (AML) is fatal in the majority of adults. Identification of new therapeutic targets and their pharmacologic modulators are needed to improve outcomes. Previous studies had shown that immunization of rabbits with normal peripheral WBCs that had been incubated with fluorodinitrobenzene elicited high titer antibodies that bound to a spectrum of human leukemias. We report that proteomic analyses of immunoaffinity-purified lysates of primary AML cells showed enrichment of scaffolding protein IQGAP1. Immunohistochemistry and gene-expression analyses confirmed IQGAP1 mRNA overexpression in various cytogenetic subtypes of primary human AML compared to normal hematopoietic cells. shRNA knockdown of IQGAP1 blocked proliferation and clonogenicity of human leukemia cell-lines. To develop small molecules targeting IQGAP1 we performed in-silico screening of 212,966 compounds, selected 4 hits targeting the IQGAP1-GRD domain, and conducted SAR of the 'fittest hit' to identify UR778Br, a prototypical agent targeting IQGAP1. UR778Br inhibited proliferation, induced apoptosis, resulted in G2/M arrest, and inhibited colony formation by leukemia cell-lines and primary-AML while sparing normal marrow cells. UR778Br exhibited favorable ADME/T profiles and drug-likeness to treat AML. In summary, AML shows response to IQGAP1 inhibition, and UR778Br, identified through in-silico studies, selectively targeted AML cells while sparing normal marrow.
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Affiliation(s)
- Deepak M Sahasrabudhe
- Wilmot Cancer Institute, University of Rochester Medical Center, 601 Elmwood Avenue, Box 704, Rochester, NY, 14618, USA.
- Department of Medicine, Hematology/Oncology, University of Rochester Medical Center, Rochester, NY, USA.
| | - Jane L Liesveld
- Wilmot Cancer Institute, University of Rochester Medical Center, 601 Elmwood Avenue, Box 704, Rochester, NY, 14618, USA
- Department of Medicine, Hematology/Oncology, University of Rochester Medical Center, Rochester, NY, USA
| | - Mohammad Minhajuddin
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, US
| | - Niloy A Singh
- Department of Medicine, Hematology/Oncology, University of Rochester Medical Center, Rochester, NY, USA
| | - Subhangi Nath
- Department of Chemistry, Birla Institute of Technology, Ranchi, Jharkhand, India
| | - Vishuwes Muthu Kumar
- Department of Chemistry, Birla Institute of Technology, Ranchi, Jharkhand, India
| | - Marlene Balys
- Genomics Research Center, University of Rochester Medical Center, Rochester, NY, USA
| | - Andrew G Evans
- Department of Pathology and Laboratory Medicine, University of Rochester Medical Center, Rochester, NY, USA
| | - Mitra Azadniv
- Department of Medicine, Hematology/Oncology, University of Rochester Medical Center, Rochester, NY, USA
| | - Jeanne N Hansen
- Department of Psychological and Brain Sciences, Colgate University, Hamilton, NY, USA
| | | | - Ashoke Sharon
- Department of Chemistry, Birla Institute of Technology, Ranchi, Jharkhand, India
| | - V Kaye Thomas
- Department of Pharmacology and Physiology, University of Rochester Medical Center, Rochester, NY, 14642, USA
| | - Richard G Moore
- Division of Obstetrics and Gynecology, University of Rochester Medical Center, Rochester, NY, USA
| | - Manoj K Khera
- Presude Lifesciences Pvt Ltd., Uttam Nagar, New Delhi, 110059, India
| | - Craig T Jordan
- Division of Hematology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, US
| | - Rakesh K Singh
- Division of Obstetrics and Gynecology, University of Rochester Medical Center, Rochester, NY, USA.
- Wilmot Cancer Institute, University of Rochester Medical Center, 601 Elmwood Avenue, Rochester, NY, 14642, USA.
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Ding H, Liu Y, Lu X, Liu A, Xu Q, Yuan Y. Pepsinogen C Interacts with IQGAP1 to Inhibit the Metastasis of Gastric Cancer Cells by Suppressing Rho-GTPase Pathway. Cancers (Basel) 2024; 16:1796. [PMID: 38791874 PMCID: PMC11120368 DOI: 10.3390/cancers16101796] [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: 03/25/2024] [Revised: 04/23/2024] [Accepted: 04/25/2024] [Indexed: 05/26/2024] Open
Abstract
AIM This study systematically explored the biological effects and mechanisms of PGC on gastric cancer (GC) cells in vitro and in vivo. METHOD The critical biological roles of PGC in GC were assessed via EdU staining, Hoechst staining, flow cytometry, mouse models, CCK-8, wound healing, transwell, and sphere-forming assays. The interaction study with IQ-domain GTPase-activating protein 1 (IQGAP1) was used by Liquid chromatography-mass spectrometry co-immunoprecipitation, immunofluorescence staining, CHX-chase assay, MG132 assay, and qRT-PCR. RESULTS PGC inhibited the proliferation, viability, epithelial-mesenchymal transition, migration, invasion, and stemness of GC cells and promoted GC cell differentiation. PGC suppressed subcutaneous tumor growth and peritoneal dissemination in vivo. The interaction study found PGC inhibits GC cell migration and invasion by downregulating IQGAP1 protein and IQGAP1-mediated Rho-GTPase signaling suppression. In addition, PGC disrupts the stability of the IQGAP1 protein, promoting its degradation and significantly shortening its half-life. Moreover, the expression levels of PGC and IQGAP1 in GC tissues were significantly negatively correlated. CONCLUSION PGC may act as a tumor suppressor in the development and metastasis of GC. PGC can downregulate its interacting protein IQGAP1 and inhibit the Rho-GTPase pathway, thereby participating in the inhibition of GC cell migration and invasion.
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Affiliation(s)
- Hanxi Ding
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, Shenyang 110001, China; (H.D.); (Y.L.); (X.L.); (A.L.)
- Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang 110001, China
- Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang 110001, China
| | - Yingnan Liu
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, Shenyang 110001, China; (H.D.); (Y.L.); (X.L.); (A.L.)
- Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang 110001, China
- Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang 110001, China
| | - Xiaodong Lu
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, Shenyang 110001, China; (H.D.); (Y.L.); (X.L.); (A.L.)
- Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang 110001, China
- Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang 110001, China
| | - Aoran Liu
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, Shenyang 110001, China; (H.D.); (Y.L.); (X.L.); (A.L.)
- Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang 110001, China
- Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang 110001, China
| | - Qian Xu
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, Shenyang 110001, China; (H.D.); (Y.L.); (X.L.); (A.L.)
- Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang 110001, China
- Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang 110001, China
| | - Yuan Yuan
- Tumor Etiology and Screening Department of Cancer Institute and General Surgery, The First Hospital of China Medical University, Shenyang 110001, China; (H.D.); (Y.L.); (X.L.); (A.L.)
- Key Laboratory of Cancer Etiology and Prevention in Liaoning Education Department, The First Hospital of China Medical University, Shenyang 110001, China
- Key Laboratory of GI Cancer Etiology and Prevention in Liaoning Province, The First Hospital of China Medical University, Shenyang 110001, China
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Zhang F, Lv M, He Y. Identification of a novel disulfideptosis-related gene signature for prognostic implication in lower-grade gliomas. Aging (Albany NY) 2024; 16:6054-6067. [PMID: 38546389 PMCID: PMC11042955 DOI: 10.18632/aging.205688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Accepted: 02/20/2024] [Indexed: 04/23/2024]
Abstract
Lower-grade gliomas (GBMLGG) are common, fatal, and difficult-to-treat cancers. The current treatment choices have impressive efficacy constraints. As a result, the development of effective treatments and the identification of new therapeutic targets are urgent requirements. Disulfide metabolism is the cause of the non-apoptotic programmed cell death known as disulfideptosis, which was only recently discovered. The mRNA expression data and related clinical information of GBMLGG patients downloaded from public databases were used in this study to investigate the prognostic significance of genes involved in disulfideptosis. In the Cancer Genome Atlas (TCGA) and Gene Expression Omnibus (GEO) cohort, our findings showed that many disulfidptosis-related genes were expressed differently in normal and GBMLGG tissues. It was discovered that IQ motif-containing GTPase-activating protein 1 (IQGAP1) is a key gene that influences the outcome of GBMLGG. Besides, a nomogram model was built to foresee the visualization of GBMLGG patients. In addition, in vivo and in vitro validation of IQGAP1's cancer-promoting function was done. In conclusion, we discovered a gene signature associated with disulfideptosis that can effectively predict OS in GBMLGG patients. As a result, treating disulfideptosis may be a viable alternative for GBMLGG patients.
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Affiliation(s)
- Fuqiang Zhang
- Department of Neurosurgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Meihong Lv
- Department of Anesthesiology, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
| | - Yi He
- Department of Urology, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
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Dai YC, Yeh SY, Cheng YY, Huang WH, Liou GG, Yang TY, Chang CY, Fang TF, Chang CW, Su MT, Lee CP, Chen MR. BGLF4 kinase regulates the formation of the EBV cytoplasmic assembly compartment and the recruitment of cellular IQGAP1 for virion release. J Virol 2024; 98:e0189923. [PMID: 38294245 PMCID: PMC10878254 DOI: 10.1128/jvi.01899-23] [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: 12/05/2023] [Accepted: 12/26/2023] [Indexed: 02/01/2024] Open
Abstract
After Epstein-Barr virus (EBV) genome replication and encapsidation in the nucleus, nucleocapsids are translocated into the cytoplasm for subsequent tegumentation and maturation. The EBV BGLF4 kinase, which induces partial disassembly of the nuclear lamina, and the nuclear egress complex BFRF1/BFLF2 coordinately facilitate the nuclear egress of nucleocapsids. Here, we demonstrate that within EBV reactivated epithelial cells, viral capsids, tegument proteins, and glycoproteins are clustered in the juxtanuclear concave region, accompanied by redistributed cytoplasmic organelles and the cytoskeleton regulator IQ-domain GTPase-activation protein 1 (IQGAP1), close to the microtubule-organizing center (MTOC). The assembly compartment (AC) structure was diminished in BGLF4-knockdown TW01-EBV cells and BGLF4-knockout bacmid-carrying TW01 cells, suggesting that the formation of AC structure is BGLF4-dependent. Notably, glycoprotein gp350/220 was observed by confocal imaging to be distributed in the perinuclear concave region and surrounded by the endoplasmic reticulum (ER) membrane marker calnexin, indicating that the AC may be located within a globular structure derived from ER membranes, adjacent to the outer nuclear membrane. Moreover, the viral capsid protein BcLF1 and tegument protein BBLF1 were co-localized with IQGAP1 near the cytoplasmic membrane in the late stage of replication. Knockdown of IQGAP1 did not affect the AC formation but decreased virion release from both TW01-EBV and Akata+ cells, suggesting IQGAP1-mediated trafficking regulates EBV virion release. The data presented here show that BGLF4 is required for cytoskeletal rearrangement, coordination with the redistribution of cytoplasmic organelles and IQGAP1 for virus maturation, and subsequent IQGAP1-dependent virion release.IMPORTANCEEBV genome is replicated and encapsidated in the nucleus, and the resultant nucleocapsids are translocated to the cytoplasm for subsequent virion maturation. We show that a cytoplasmic AC, containing viral proteins, markers of the endoplasmic reticulum, Golgi, and endosomes, is formed in the juxtanuclear region of epithelial and B cells during EBV reactivation. The viral BGLF4 kinase contributes to the formation of the AC. The cellular protein IQGAP1 is also recruited to the AC and partially co-localizes with the virus capsid protein BcLF1 and tegument protein BBLF1 in EBV-reactivated cells, dependent on the BGLF4-induced cytoskeletal rearrangement. In addition, virion release was attenuated in IQGAP1-knockdown epithelial and B cells after reactivation, suggesting that IQGAP1-mediated trafficking may regulate the efficiency of virus maturation and release.
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Affiliation(s)
- Yu-Ching Dai
- Graduate Institute and Department of Microbiology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Szu-Yun Yeh
- Graduate Institute and Department of Microbiology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Yi-Ying Cheng
- Graduate Institute and Department of Microbiology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Wei-Han Huang
- Graduate Institute and Department of Microbiology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Gunn-Guang Liou
- Office of Research and Development, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Tsung-Yu Yang
- Graduate Institute and Department of Microbiology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Chao-Yuan Chang
- Graduate Institute and Department of Microbiology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Tien-Fang Fang
- Graduate Institute and Department of Microbiology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Chou-Wei Chang
- Graduate Institute and Department of Microbiology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Mei-Tzu Su
- Graduate Institute and Department of Microbiology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Chung-Pei Lee
- School of Nursing, National Taipei University of Nursing and Health Sciences, Taipei, Taiwan
| | - Mei-Ru Chen
- Graduate Institute and Department of Microbiology, College of Medicine, National Taiwan University, Taipei, Taiwan
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Kido A, Ishikawa A, Fukui T, Katsuya N, Kuraoka K, Sentani K, Tazuma S, Sudo T, Serikawa M, Oka S, Oue N, Yasui W. IQ Motif Containing GTPase-Activating Protein 3 Is Associated with Cancer Stemness and Survival in Pancreatic Ductal Adenocarcinoma. Pathobiology 2023; 91:268-278. [PMID: 38104546 PMCID: PMC11309048 DOI: 10.1159/000535542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 11/24/2023] [Indexed: 12/19/2023] Open
Abstract
INTRODUCTION Pancreatic ductal adenocarcinoma (PDAC) is one of the most lethal types of malignancy, with poor prognosis and rising incidence. IQ motif containing GTPase-activating protein 3 (IQGAP3) is a member of the IQGAPs family of scaffolding proteins that govern multiple cellular activities like cytoskeletal remodeling and cellular signal transduction. This study aimed to analyze the expression and biological function of IQGAP3 in PDAC. METHODS We analyzed IQGAP3 expression in 81 PDAC samples by immunohistochemistry. RNA interference was used to inhibit IQGAP3 expression in PDAC cell lines. RESULTS Immunohistochemical analysis of IQGAP3 showed that 54.3% of PDACs were positive for cytoplasmic expression of IQGAP3, with no expression found in non-neoplastic tissue. Furthermore, IQGAP3 expression was an independent poor prognostic factor in our immunostaining-based studies and analyses of public databases. Our cohort and the Cancer Genome Atlas database indicated that IQGAP3 is co-localized with kinesin family member C1 (KIFC1), which we previously reported as a cancer stem cell-associated protein. IQGAP3 small interfering RNA treatment decreased PDAC cell proliferation and spheroid colony formation via ERK and AKT pathways. DISCUSSION/CONCLUSION These results suggest that IQGAP3, a transmembrane protein, is involved in survival and stemness and may be a promising new therapeutic target for PDAC.
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Affiliation(s)
- Aya Kido
- Department of Molecular Pathology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan,
| | - Akira Ishikawa
- Department of Molecular Pathology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Takafumi Fukui
- Department of Molecular Pathology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Narutaka Katsuya
- Department of Molecular Pathology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kazuya Kuraoka
- Department of Diagnostic Pathology, Kure Medical Center and Chugoku Cancer Center, National Hospital Organization, Kure, Japan
- Institute for Clinical Laboratory, Kure Medical Center and Chugoku Cancer Center, National Hospital Organization, Kure, Japan
| | - Kazuhiro Sentani
- Department of Molecular Pathology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Sho Tazuma
- Department of Surgery, Kure Medical Center and Chugoku Cancer Center, National Hospital Organization, Kure, Japan
| | - Takeshi Sudo
- Department of Surgery, Kure Medical Center and Chugoku Cancer Center, National Hospital Organization, Kure, Japan
| | - Masahiro Serikawa
- Department of Gastroenterology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Shiro Oka
- Department of Gastroenterology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Naohide Oue
- Department of Pathology, Miyoshi Central Hospital, Miyoshi, Japan
| | - Wataru Yasui
- Department of Molecular Pathology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
- Division of Pathology, Hiroshima City Medical Association Clinical Laboratory, Hiroshima, Japan
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Martin-Vega A, Cobb MH. Navigating the ERK1/2 MAPK Cascade. Biomolecules 2023; 13:1555. [PMID: 37892237 PMCID: PMC10605237 DOI: 10.3390/biom13101555] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 10/16/2023] [Accepted: 10/18/2023] [Indexed: 10/29/2023] Open
Abstract
The RAS-ERK pathway is a fundamental signaling cascade crucial for many biological processes including proliferation, cell cycle control, growth, and survival; common across all cell types. Notably, ERK1/2 are implicated in specific processes in a context-dependent manner as in stem cells and pancreatic β-cells. Alterations in the different components of this cascade result in dysregulation of the effector kinases ERK1/2 which communicate with hundreds of substrates. Aberrant activation of the pathway contributes to a range of disorders, including cancer. This review provides an overview of the structure, activation, regulation, and mutational frequency of the different tiers of the cascade; with a particular focus on ERK1/2. We highlight the importance of scaffold proteins that contribute to kinase localization and coordinate interaction dynamics of the kinases with substrates, activators, and inhibitors. Additionally, we explore innovative therapeutic approaches emphasizing promising avenues in this field.
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Affiliation(s)
- Ana Martin-Vega
- Department of Pharmacology, UT Southwestern Medical Center, 6001 Forest Park Rd., Dallas, TX 75390, USA;
| | - Melanie H. Cobb
- Department of Pharmacology, UT Southwestern Medical Center, 6001 Forest Park Rd., Dallas, TX 75390, USA;
- Simmons Comprehensive Cancer Center, UT Southwestern Medical Center, 6001 Forest Park Rd., Dallas, TX 75390, USA
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Ren X, Guo X, Liang Z, Guo R, Liang S, Liu H. Hax1 regulate focal adhesion dynamics through IQGAP1. Cell Commun Signal 2023; 21:182. [PMID: 37488602 PMCID: PMC10364419 DOI: 10.1186/s12964-023-01189-y] [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: 03/28/2023] [Accepted: 06/07/2023] [Indexed: 07/26/2023] Open
Abstract
Cell migration is a highly orchestrated process requiring the coordination between the cytoskeleton, cell membrane and extracellular matrix adhesions. Our previous study demonstrated that Hax1 interacts with EB2, a microtubule end-binding protein, and this interaction regulate cell migration in keratinocytes. However, little is known about the underlying regulatory mechanism. Here, we show that Hax1 links dynamic focal adhesions to regulate cell migration via interacting with IQGAP1, a multidomain scaffolding protein, which was identified by affinity purification coupled with LC-MS/MS. Biochemical characterizations revealed that C-terminal region of Hax1 and RGCT domain of IQGAP1 are the most critical binding determinants for its interaction. IQGAP1/Hax1 interaction is essential for cell migration in MCF7 cells. Knockdown of HAX1 not only stabilizes focal adhesions, but also impairs the accumulation of IQGAP in focal adhesions. Further study indicates that this interaction is critical for maintaining efficient focal adhesion turnover. Perturbation of the IQGAP1/Hax1 interaction in vivo using a membrane-permeable TAT-RGCT peptide results in impaired focal adhesion turnover, thus leading to inhibition of directional cell migration. Together, our findings unravel a novel interaction between IQGAP1 and Hax1, suggesting that IQGAP1 association with Hax1 plays a significant role in focal adhesion turnover and directional cell migration. Video Abstract.
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Affiliation(s)
- Xinyi Ren
- School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Xiaopu Guo
- School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Zihan Liang
- School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Renxian Guo
- School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Shaohui Liang
- School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China.
| | - Han Liu
- School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China.
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He C, Jaffar Ali D, Qi Y, Li Y, Sun B, Liu R, Sun B, Xiao Z. Engineered extracellular vesicles mediated CRISPR-induced deficiency of IQGAP1/FOXM1 reverses sorafenib resistance in HCC by suppressing cancer stem cells. J Nanobiotechnology 2023; 21:154. [PMID: 37202772 DOI: 10.1186/s12951-023-01902-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 04/18/2023] [Indexed: 05/20/2023] Open
Abstract
BACKGROUND Sorafenib resistance poses therapeutic challenges in HCC treatment, in which cancer stem cells (CSCs) plays a crucial role. CRISPR/Cas9 can be utilized as a potential technique to overcome the drug resistance. However, a safe, efficient and target specific delivery of this platform remains challenging. Extracellular vesicles (EVs), the active components of cell to cell communication, hold promising benefits as delivery platform. RESULTS Herein we report the normal epithelial cell -derived EVs engineered with HN3(HLC9-EVs) show competing tumor targeting ability. Anchoring HN3 to the membrane of the EVs through LAMP2, drastically increased the specific homing of HLC9-EVs to GPC3+Huh-7 cancer cells rather than co-cultured GPC3-LO2 cells. Combination therapy of HCC with sorafenib and HLC9-EVs containing sgIF to silence IQGAP1 (protein responsible for reactivation of Akt/PI3K signaling in sorafenib resistance) and FOXM1 (self-renewal transcription factor in CSCs attributed to sorafenib resistance), exhibited effective synergistic anti-cancer effect both in vitro and in vivo. Our results also showed that disruption of IQGAP1/FOXM1 resulted in the reduction of CD133+ population that contribute to the stemness of liver cancer cells. CONCLUSION By reversing sorafenib resistance using combination therapeutic approach with engineered EVs encapsulated CRISPR/Cas9 and sorafenib, our study foreshadows a path for a better, accurate, reliable and successful anti-cancer therapy in the future.
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Affiliation(s)
- Cong He
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, Jiangsu, China
- Department of Hepatobiliary Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, 210008, Jiangsu, China
| | - Doulathunnisa Jaffar Ali
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, Jiangsu, China.
| | - Yuhua Qi
- NHC Key Laboratory of Enteric Pathogenic Microbiology, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, 210009, Jiangsu, China
| | - Yumin Li
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, Jiangsu, China
| | - Beicheng Sun
- Department of Hepatobiliary Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, 210008, Jiangsu, China
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui, China
| | - Rui Liu
- Department of Genetic Engineering, College of Natural Science, University of Suwon, Kyunggi-Do, 445-743, Republic of Korea
| | - Bo Sun
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, Jiangsu, China.
| | - Zhongdang Xiao
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, Jiangsu, China.
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Bardwell AJ, Paul M, Yoneda KC, Andrade-Ludeña MD, Nguyen OT, Fruman DA, Bardwell L. The WW domain of IQGAP1 binds directly to the p110α catalytic subunit of PI 3-kinase. Biochem J 2023; 480:BCJ20220493. [PMID: 37145016 PMCID: PMC10625650 DOI: 10.1042/bcj20220493] [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: 09/24/2022] [Revised: 04/24/2023] [Accepted: 05/05/2023] [Indexed: 05/06/2023]
Abstract
IQGAP1 is a multi-domain cancer-associated protein that serves as a scaffold protein for multiple signaling pathways. Numerous binding partners have been found for the calponin homology, IQ and GAP-related domains in IQGAP1. Identification of a binding partner for its WW domain has proven elusive, however, even though a cell-penetrating peptide derived from this domain has marked anti-tumor activity. Here, using in vitro binding assays with human proteins and co-precipitation from human cells, we show that the WW domain of human IQGAP1 binds directly to the p110α catalytic subunit of phosphoinositide 3-kinase (PI3K). In contrast, the WW domain does not bind to ERK1/2, MEK1/2, or the p85α regulatory subunit of PI3K when p85α is expressed alone. However, the WW domain is able to bind to the p110α/p85α heterodimer when both subunits are co-expressed, as well as to the mutationally activated p110α/p65α heterodimer. We present a model of the structure of the IQGAP1 WW domain, and experimentally identify key residues in the hydrophobic core and beta strands of the WW domain that are required for binding to p110α. These findings contribute to a more precise understanding of IQGAP1-mediated scaffolding, and of how IQGAP1-derived therapeutic peptides might inhibit tumorigenesis.
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Affiliation(s)
- A. Jane Bardwell
- Department of Developmental and Cell Biology, University of California, Irvine, CA, U.S.A
| | - Madhuri Paul
- Department of Molecular Biology and Biochemistry, University of California, Irvine, CA, U.S.A
| | - Kiku C. Yoneda
- Department of Developmental and Cell Biology, University of California, Irvine, CA, U.S.A
| | | | - Oanh T. Nguyen
- Department of Developmental and Cell Biology, University of California, Irvine, CA, U.S.A
| | - David A. Fruman
- Department of Molecular Biology and Biochemistry, University of California, Irvine, CA, U.S.A
| | - Lee Bardwell
- Department of Developmental and Cell Biology, University of California, Irvine, CA, U.S.A
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10
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Mohapatra T, Dixit M. IQ Motif Containing GTPase Activating Proteins (IQGAPs), A-Kinase Anchoring Proteins (AKAPs) and Kinase Suppressor of Ras Proteins (KSRs) in Scaffolding Oncogenic Pathways and Their Therapeutic Potential. ACS OMEGA 2022; 7:45837-45848. [PMID: 36570181 PMCID: PMC9773950 DOI: 10.1021/acsomega.2c05505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 11/18/2022] [Indexed: 06/17/2023]
Abstract
Scaffolding proteins colocalize interacting partners on their surface and facilitate complex formation. They have multiple domains and motifs, which provide binding sites for various molecules. This property of scaffolding proteins helps in the orderly transduction of signals. Abnormal signal transduction is frequently observed in cancers, which can also be attributed to the altered functionality of scaffolding proteins. IQ motif containing GTPase activating proteins (IQGAPs), kinase suppressor of Ras (KSR), and A-kinase anchoring proteins (AKAPs) tether oncogenic pathways RAS/RAF/MEK/ERK, PI3K/AKT, Hippo, Wnt, and CDC42/RAC to them. Scaffolding proteins are attractive drug targets as they are the controlling hub for multiple pathways and regulate crosstalk between them. The first part of this review describes the human scaffolding proteins known to play a role in oncogenesis, pathways altered by them, and the impact on oncogenic processes. The second part provides information on the therapeutic potential of scaffolding proteins and future possibilities. The information on the explored and unexplored areas of the therapeutic potential of scaffolding proteins will be equally helpful for biologists and chemists.
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Affiliation(s)
- Talina Mohapatra
- National
Institute of Science Education and Research, School of Biological Sciences, Bhubaneswar, Odisha 752050, India
- Homi
Bhabha National Institute, Training School
Complex, Anushaktinagar, Mumbai 400094, India
| | - Manjusha Dixit
- National
Institute of Science Education and Research, School of Biological Sciences, Bhubaneswar, Odisha 752050, India
- Homi
Bhabha National Institute, Training School
Complex, Anushaktinagar, Mumbai 400094, India
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11
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Mohamed EE, Ahmed OM, Abdel-Moneim A, Zoheir KMA, Elesawy BH, Al Askary A, Hassaballa A, El-Shahawy AAG. Protective Effects of Naringin-Dextrin Nanoformula against Chemically Induced Hepatocellular Carcinoma in Wistar Rats: Roles of Oxidative Stress, Inflammation, Cell Apoptosis, and Proliferation. Pharmaceuticals (Basel) 2022; 15:ph15121558. [PMID: 36559011 PMCID: PMC9786090 DOI: 10.3390/ph15121558] [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: 11/01/2022] [Revised: 12/05/2022] [Accepted: 12/09/2022] [Indexed: 12/23/2022] Open
Abstract
Nanotechnology holds great promise for the development of treatments for deadly human diseases, such as hepatocellular carcinoma (HCC). In the current study, we compared the hepatoprotective effects of naringin-dextrin nanoparticles (NDNPs) against HCC in male Wistar rats with those of pure naringin and investigated the underlying cellular and molecular mechanisms. HCC was induced by intraperitoneal injection of diethylnitrosamine (DEN, 150 mg/kg body weight (b.w.) per week) for two weeks, followed by oral administration of 2-acetylaminofluorene (2AAF, 20 mg/kg b.w.) four times per week for three weeks. DEN/2AAF-administered rats were divided into three groups that respectively received 1% carboxymethyl cellulose (as vehicle), 10 mg/kg b.w. naringin, or 10 mg/kg b.w. NDNP every other day by oral gavage for 24 weeks. Both naringin and NDNP significantly attenuated the harmful effects of DEN on liver function. Both compounds also suppressed tumorigenesis as indicated by the reduced serum concentrations of liver tumor markers, and this antitumor effect was confirmed by histopathological evaluation. Additionally, naringin and NDNP prevented DEN-induced changes in hepatic oxidative stress and antioxidant activities. In addition, naringin and NDNP suppressed inflammation induced by DEN. Moreover, naringin and NDNP significantly reduced the hepatic expression of Bcl-2 and increased Bax, p53, and PDCD5 expressions. Naringin and NDNP also reduced expression of IQGAP1, IQGAP3, Ras signaling, and Ki-67 while increasing expression of IQGAP2. Notably, NDNP more effectively mitigated oxidative stress and inflammatory signaling than free naringin and demonstrated improved antitumor efficacy, suggesting that this nanoformulation improves bioavailability within nascent tumor sites.
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Affiliation(s)
- Eman E. Mohamed
- Physiology Division, Faculty of Science, Beni-Suef University, P.O. Box 62521, Beni-Suef 2722165, Egypt
| | - Osama M. Ahmed
- Physiology Division, Faculty of Science, Beni-Suef University, P.O. Box 62521, Beni-Suef 2722165, Egypt
- Correspondence: or
| | - Adel Abdel-Moneim
- Physiology Division, Faculty of Science, Beni-Suef University, P.O. Box 62521, Beni-Suef 2722165, Egypt
| | - Khairy M. A. Zoheir
- Cell Biology Department, Biotechnology Research Institute, National Research Centre, Cairo 12622, Egypt
| | - Basem H. Elesawy
- Department of Pathology, College of Medicine, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Ahmad Al Askary
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Ahmed Hassaballa
- Nutrition and Food Science, College of Liberal Arts and Sciences, Wayne State University, Detroit, MI 48202, USA
- ZeroHarm L.C., Farmington Hills, Farmington, MI 48333, USA
| | - Ahmed A. G. El-Shahawy
- Materials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences (PSAS), Beni-Suef University, Beni-Suef 2722165, Egypt
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12
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Chen Y, Mei J, Zhang P, Liu J, Chen L, Wu L, Zhang Y. IQGAP1 is positively correlated with PD-L1 and regulates its expression via mediating STAT proteins phosphorylation. Int Immunopharmacol 2022; 108:108897. [DOI: 10.1016/j.intimp.2022.108897] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 05/20/2022] [Accepted: 05/24/2022] [Indexed: 12/15/2022]
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13
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Zhang Z, Wei Y, Li X, Zhao R, Wang X, Yang Z, Li T, Wang X, Li X, Wang X. IQGAP1 enhances cell invasion and matrix metalloproteinase-2 expression through upregulating NF-κB activity in esophageal squamous cell carcinoma cells. Gene 2022; 824:146406. [PMID: 35276237 DOI: 10.1016/j.gene.2022.146406] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 02/22/2022] [Accepted: 03/04/2022] [Indexed: 12/12/2022]
Abstract
Esophageal squamous cell carcinoma (ESCC) is one type of the most common malignancies, yet the overall survival rate is still not ideal. IQ motif containing GTPase activating protein 1 (IQGAP1) participates in cell biological functions of various tumors as an oncogene. However, the mechanisms of IQGAP1 affecting malignant development of ESCC are still unclear. In this study, the expression and correlation of IQGAP1 and MMP2 in esophageal cancer tissues were evaluated by online databases and immunohistochemistry. Stably transfected cell lines with IQGAP1 overexpression and knockdown were constructed. Cell growth, migration and invasion ability, the expression of MMP2 and NF-κB expression were examined in ESCC cells. Furthermore, the cellular malignant phenotypes of ESCC and MMP2 expression in IQGAP1 overexpressing cells after treatment with the NF-κB inhibitor pyrrolidinecarbodithioic acid (PDTC) or JSH-23 were detected. We found that the expression of IQGAP1 and MMP2 were up-regulated and positively correlated in ESCC tissues. IQGAP1 overexpression promoted the growth, migration and invasion of ESCC cells, and up-regulated the expression of MMP2, and increased the expression and the nuclear localization level of NF-κB. Treating with PDTC or JSH-23 reversed IQGAP1-mediated cell migration and invasion ability, as well as the expression of MMP2. In summary, IQGAP1 plays a tumor promotion role to regulate the migration and invasion of ESCC cells and the expression of MMP2 through upregulating NF-κB activity, supporting a promising therapeutic target against ESCC.
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Affiliation(s)
- Zhen Zhang
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan 030001, Taiyuan, China
| | - Yuan Wei
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan 030001, Taiyuan, China
| | - Xinting Li
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan 030001, Taiyuan, China
| | - Rong Zhao
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan 030001, Taiyuan, China
| | - Xiuli Wang
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan 030001, Taiyuan, China
| | - Ziyi Yang
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan 030001, Taiyuan, China
| | - Ting Li
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan 030001, Taiyuan, China
| | - Xuewei Wang
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan 030001, Taiyuan, China
| | - Xiaozhong Li
- Department of Infection, Shanxi Provincial People's Hospital, Taiyuan, China
| | - Xiaoxia Wang
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan 030001, Taiyuan, China; Key Laboratory of Cellular Physiology (Shanxi Medical University), Ministry of Education, China; Department of Physiology, Shanxi Medical University, Taiyuan, China.
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14
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Raivola J, Dini A, Salokas K, Karvonen H, Niininen W, Piki E, Varjosalo M, Ungureanu D. New insights into the molecular mechanisms of ROR1, ROR2, and PTK7 signaling from the proteomics and pharmacological modulation of ROR1 interactome. Cell Mol Life Sci 2022; 79:276. [PMID: 35504983 PMCID: PMC9064840 DOI: 10.1007/s00018-022-04301-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 04/06/2022] [Accepted: 04/11/2022] [Indexed: 11/29/2022]
Abstract
ROR1, ROR2, and PTK7 are Wnt ligand-binding members of the receptor tyrosine kinase family. Despite their lack of catalytic activity, these receptors regulate skeletal, cardiorespiratory, and neurological development during embryonic and fetal stages. However, their overexpression in adult tissue is strongly connected to tumor development and metastasis, suggesting a strong pharmacological potential for these molecules. Wnt5a ligand can activate these receptors, but lead to divergent signaling and functional outcomes through mechanisms that remain largely unknown. Here, we developed a cellular model by stably expressing ROR1, ROR2, and PTK7 in BaF3 cells that allowed us to readily investigate side-by-side their signaling capability and functional outcome. We applied proteomic profiling to BaF3 clones and identified distinctive roles for ROR1, ROR2, and PTK7 pseudokinases in modulating the expression of proteins involved in cytoskeleton dynamics, apoptotic, and metabolic signaling. Functionally, we show that ROR1 expression enhances cell survival and Wnt-mediated cell proliferation, while ROR2 and PTK7 expression is linked to cell migration. We also demonstrate that the distal C-terminal regions of ROR1 and ROR2 are required for receptors stability and downstream signaling. To probe the pharmacological modulation of ROR1 oncogenic signaling, we used affinity purification coupled to mass spectrometry (AP-MS) and proximity-dependent biotin identification (BioID) to map its interactome before and after binding of GZD824, a small molecule inhibitor previously shown to bind to the ROR1 pseudokinase domain. Our findings bring new insight into the molecular mechanisms of ROR1, ROR2, and PTK7, and highlight the therapeutic potential of targeting ROR1 with small molecule inhibitors binding to its vestigial ATP-binding site.
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Affiliation(s)
- Juuli Raivola
- Applied Tumor Genomics Research Program, Faculty of Medicine, University of Helsinki, 00014, Helsinki, Finland
| | - Alice Dini
- Applied Tumor Genomics Research Program, Faculty of Medicine, University of Helsinki, 00014, Helsinki, Finland
| | - Kari Salokas
- Institute of Biotechnology, HiLife, University of Helsinki, 00014, Helsinki, Finland
| | - Hanna Karvonen
- Faculty of Medicine and Health Technology, Tampere University, 33014, Tampere, Finland
- Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, New York, NY, 10032, USA
| | - Wilhelmiina Niininen
- Faculty of Medicine and Health Technology, Tampere University, 33014, Tampere, Finland
| | - Emilia Piki
- Applied Tumor Genomics Research Program, Faculty of Medicine, University of Helsinki, 00014, Helsinki, Finland
| | - Markku Varjosalo
- Institute of Biotechnology, HiLife, University of Helsinki, 00014, Helsinki, Finland
| | - Daniela Ungureanu
- Applied Tumor Genomics Research Program, Faculty of Medicine, University of Helsinki, 00014, Helsinki, Finland.
- Faculty of Medicine and Health Technology, Tampere University, 33014, Tampere, Finland.
- Faculty of Biochemistry and Molecular Medicine, University of Oulu, 90014, Oulu, Finland.
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15
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Vakhrusheva A, Murashko A, Trifonova E, Efremov Y, Timashev P, Sokolova O. Role of Actin-binding Proteins in the Regulation of Cellular Mechanics. Eur J Cell Biol 2022; 101:151241. [DOI: 10.1016/j.ejcb.2022.151241] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 04/18/2022] [Accepted: 05/19/2022] [Indexed: 12/25/2022] Open
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16
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CDC42 Regulates Cell Proliferation and Apoptosis in Bladder Cancer via the IQGAP3-Mediated Ras/ERK Pathway. Biochem Genet 2022; 60:2383-2398. [PMID: 35412170 DOI: 10.1007/s10528-022-10223-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 03/09/2022] [Indexed: 11/02/2022]
Abstract
Bladder cancer (BC) is the most common malignant tumour of the urinary system. The current conventional treatments for BC have certain limitations. It is very urgent and necessary to find new treatment strategies for BC. Our study elucidated the underlying regulatory mechanisms of cell division control protein 42 homologue (CDC42) to regulate the development of BC. Quantitative real-time polymerase chain reaction, Western blot, immunofluorescence and immunohistochemistry were used to assess the expression of CDC42 and IQ motif-containing GTPase-activating protein 3 (IQGAP3) in BC tissues and BC cells. We induced the knockdown or overexpression by transfecting sh-CDC42 or oe-IQGAP3 into BC cells. In addition, cell proliferation and apoptosis were evaluated by cell counting kit-8 and flow cytometry assays, respectively. Moreover, proteins involved in the rat sarcoma (Ras)/extracellular regulated protein kinase (ERK) pathway were determined by Western blot. The expression of CDC42 and IQGAP3 was markedly upregulated in both BC tissues and BC cells. CDC42 silencing downregulated the expression of IQGAP3 and suppressed the Ras/ERK pathway. In addition, CDC42 silencing markedly promoted apoptosis and inhibited proliferation in BC cells. Further experiments showed that overexpression of IQGAP3 dramatically abolished the bioeffects mediated by CDC42 silencing on the proliferation and apoptosis of BC cells. All our results suggested that CDC42 promoted the Ras/ERK pathway by regulating IQGAP3, thus enhancing cell proliferation and suppressing cell apoptosis in BC cells and ultimately participating in the pathogenesis of BC.
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17
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Rotoli D, Díaz-Flores L, Gutiérrez R, Morales M, Ávila J, Martín-Vasallo P. AmotL2, IQGAP1, and FKBP51 Scaffold Proteins in Glioblastoma Stem Cell Niches. J Histochem Cytochem 2022; 70:9-16. [PMID: 34165350 PMCID: PMC8721575 DOI: 10.1369/00221554211025480] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Glioma stem cells (GSCs) live in a continuous process of stemness reprogramming to achieve specific cell commitment within the so-called GSC niches, specifically located in periarteriolar regions. In this review, we analyze the expression levels, cellular and subcellular location, and role of three scaffold proteins (IQGAP1, FKBP51, and AmotL2) in GSC niches. Scaffold proteins contribute to cell differentiation, migration, and angiogenesis in glioblastoma. It could be of diagnostic interest for establishing stages, for therapeutic targets, and for improving glioblastoma prognosis, which is still at the experimental level.
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Affiliation(s)
- Deborah Rotoli
- Department of Bioquímica, Microbiología, Biología Celular y Genética, Universidad de La Laguna, San Cristóbal de La Laguna, Spain,Instituto de Tecnología Biomédicas de Canarias, Universidad de La Laguna, San Cristóbal de La Laguna, Spain,Istituto per l’Endocrinologia e l’Oncologia Gaetano Salvatore, Naples, Italy
| | - Lucio Díaz-Flores
- Department of Basic Medical Sciences and Department of Anatomy, Pathology, Histology and Radiology, Universidad de La Laguna, San Cristóbal de La Laguna, Spain
| | - Ricardo Gutiérrez
- Department of Basic Medical Sciences and Department of Anatomy, Pathology, Histology and Radiology, Universidad de La Laguna, San Cristóbal de La Laguna, Spain
| | - Manuel Morales
- Oncología Médica, Hospital Universitario Nuestra Señora de Candelaria, Santa Cruz de Tenerife, Spain
| | - Julio Ávila
- Department of Bioquímica, Microbiología, Biología Celular y Genética, Universidad de La Laguna, San Cristóbal de La Laguna, Spain,Instituto de Tecnología Biomédicas de Canarias, Universidad de La Laguna, San Cristóbal de La Laguna, Spain
| | - Pablo Martín-Vasallo
- Pablo Martín-Vasallo, UD Bioquímica y Biología Molecular, Universidad de La Laguna, Av/Astrofísico Sánchez s/n, 38206 San Cristóbal de La Laguna, Tenerife, Spain. E-mail:
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18
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Chhichholiya Y, Suryan AK, Suman P, Munshi A, Singh S. SNPs in miRNAs and Target Sequences: Role in Cancer and Diabetes. Front Genet 2021; 12:793523. [PMID: 34925466 PMCID: PMC8673831 DOI: 10.3389/fgene.2021.793523] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 10/28/2021] [Indexed: 12/27/2022] Open
Abstract
miRNAs are fascinating molecular players for gene regulation as individual miRNA can control multiple targets and a single target can be regulated by multiple miRNAs. Loss of miRNA regulated gene expression is often reported to be implicated in various human diseases like diabetes and cancer. Recently, geneticists across the world started reporting single nucleotide polymorphism (SNPs) in seed sequences of miRNAs. Similarly, SNPs are also reported in various target sequences of these miRNAs. Both the scenarios lead to dysregulated gene expression which may result in the progression of diseases. In the present paper, we explore SNPs in various miRNAs and their target sequences reported in various human cancers as well as diabetes. Similarly, we also present evidence of these mutations in various other human diseases.
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Affiliation(s)
- Yogita Chhichholiya
- Department of Human Genetics and Molecular Medicine, Central University of Punjab, Bathinda, India
| | - Aman Kumar Suryan
- Department of Human Genetics and Molecular Medicine, Central University of Punjab, Bathinda, India
| | - Prabhat Suman
- Department of Human Genetics and Molecular Medicine, Central University of Punjab, Bathinda, India
| | - Anjana Munshi
- Department of Human Genetics and Molecular Medicine, Central University of Punjab, Bathinda, India
| | - Sandeep Singh
- Department of Human Genetics and Molecular Medicine, Central University of Punjab, Bathinda, India
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19
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Harada A, Matsumoto S, Yasumizu Y, Shojima K, Akama T, Eguchi H, Kikuchi A. Localization of KRAS downstream target ARL4C to invasive pseudopods accelerates pancreatic cancer cell invasion. eLife 2021; 10:66721. [PMID: 34590580 PMCID: PMC8598236 DOI: 10.7554/elife.66721] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 09/29/2021] [Indexed: 12/13/2022] Open
Abstract
Pancreatic cancer has a high mortality rate due to metastasis. Whereas KRAS is mutated in most pancreatic cancer patients, controlling KRAS or its downstream effectors has not been succeeded clinically. ARL4C is a small G protein whose expression is induced by the Wnt and EGF–RAS pathways. In the present study, we found that ARL4C is frequently overexpressed in pancreatic cancer patients and showed that its localization to invasive pseudopods is required for cancer cell invasion. IQGAP1 was identified as a novel interacting protein for ARL4C. ARL4C recruited IQGAP1 and its downstream effector, MMP14, to invasive pseudopods. Specific localization of ARL4C, IQGAP1, and MMP14 was the active site of invasion, which induced degradation of the extracellular matrix. Moreover, subcutaneously injected antisense oligonucleotide against ARL4C into tumor-bearing mice suppressed metastasis of pancreatic cancer. These results suggest that ARL4C–IQGAP1–MMP14 signaling is activated at invasive pseudopods of pancreatic cancer cells. Most cases of pancreatic cancer are detected in the later stages when they are difficult to treat and, as a result, survival is low. Over 90% of pancreatic cancers contain genetic changes that increase the activity of a protein called KRAS. This hyperactive KRAS drives cancer growth and progression. Attempts to treat pancreatic cancer using drugs that reduce the activity of KRAS have so far failed. The KRAS protein can accelerate growth in healthy cells as well as in cancer and it does this by activating various other proteins. Drugs that target some of these other proteins could be more effective at treating pancreatic cancer than the drugs that target KRAS. One of these potential targets is called ARL4C. ARL4C is active during fetal development, but it is often not present in adult tissues. Harada et al. investigated whether the protein is important in pancreatic cancer, and what other roles it has in the body, to better understand if it is a good target for cancer treatment. First, Harada et al. used cells grown in the lab to show that ARL4C contributes to the aggressive spread of human pancreatic cancers. Using mice, Harada et al. also showed that blocking the activity of ARL4C in pancreatic cancers helped to slow their progression. Harada et al.’s results suggest that ARL4C could be a good target for new drugs treating pancreatic cancers. Given that this protein does not seem to have important roles in the cells of adults, targeting it is unlikely to have major side effects. Further investigation of ARL4C in more human-like animal models will help to confirm these results.
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Affiliation(s)
- Akikazu Harada
- Department of Molecular Biology and Biochemistry, Graduate School of Medicine, Osaka University, Suita, Japan.,Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, 2-2 Yamadaoka, Suita, Japan
| | - Shinji Matsumoto
- Department of Molecular Biology and Biochemistry, Graduate School of Medicine, Osaka University, Suita, Japan.,Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, 2-2 Yamadaoka, Suita, Japan
| | - Yoshiaki Yasumizu
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, 2-2 Yamadaoka, Suita, Japan.,Laboratory of Experimental Immunology, WPI Frontier Immunology Research Center, Osaka University, Suita, Japan
| | - Kensaku Shojima
- Department of Molecular Biology and Biochemistry, Graduate School of Medicine, Osaka University, Suita, Japan.,Gene Expression Laboratory (GEL-B), Salk Institute for Biological Studies, San Diego, United States
| | - Toshiyuki Akama
- Department of Molecular Biology and Biochemistry, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Hidetoshi Eguchi
- Gastroenterological Surgery, Graduate School of Medicine, Osaka University, Suita, Japan
| | - Akira Kikuchi
- Department of Molecular Biology and Biochemistry, Graduate School of Medicine, Osaka University, Suita, Japan.,Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, 2-2 Yamadaoka, Suita, Japan
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20
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Zhu X, Wang Y, Jiang C, Li X, Sun L, Wang G, Fu X. Radiosensitivity-Specific Proteomic and Signaling Pathway Network of Non-Small Cell Lung Cancer (NSCLC). Int J Radiat Oncol Biol Phys 2021; 112:529-541. [PMID: 34506873 DOI: 10.1016/j.ijrobp.2021.08.041] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 08/07/2021] [Accepted: 08/31/2021] [Indexed: 12/25/2022]
Abstract
PURPOSE An unmet clinical need in non-small cell lung cancer (NSCLC) management is the accurate prediction of radiation response in patients receiving radical radiation therapy. We explored the intrinsic radiosensitivity of NSCLC from the proteomic profiles of NSCLC cell lines and paraffin-embedded human samples. METHODS AND MATERIALS To uncover radiosensitivity-specific proteomic and signaling pathways, we performed quantitative proteomics by data-independent acquisition mass spectrometry assay on 29 human NSCLC cell lines and 13 paraffin-embedded human NSCLC samples. We validated closely interacting radioresistant proteins by western blotting, immunofluorescence, real-time quantitative polymerase chain reaction in NSCLC cell lines, and immunohistochemistry in paraffin-embedded human samples. We validated the functions of 3 key hub proteins by lentivirus transfection, clonogenic survival assay, and flow cytometry. RESULTS The proteomic profiling of NSCLC showed that the intrinsic radiosensitivity of NSCLC is mainly modulated by signaling pathways of proteoglycans in cancer, focal adhesion, and regulation of the actin cytoskeleton. We identified 71 differentially expressed proteins and validated 8 closely interacting proteins as radioresistant proteins of NSCLC. Moreover, we also validated the functionality of integrin-linked protein kinase, p21-activated kinase 1, and Ras GTPase-activating-like protein IQGAP1 in the radiation response of NSCLC cell lines. Finally, with the NSCLC radiosensitivity-specific proteins, we delineated the atlas network of NSCLC radiosensitivity-related signaling pathways. CONCLUSIONS Radiosensitivity-specific proteins could guide individualized radiation therapy in clinical practice by predicting the radiation response of patients with NSCLC. Moreover, the NSCLC radiosensitivity-related signaling pathway atlas could guide further exploration of the underlying mechanism.
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Affiliation(s)
- Xueru Zhu
- Department of Radiation Oncology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Yiting Wang
- Department of Radiation Oncology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Chang Jiang
- Department of Radiation Oncology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Xiaoyang Li
- Department of Radiation Oncology, The First Affiliated Hospital of University of Science and Technology of China, Anhui, China
| | - Linying Sun
- Institution of Computing Technology, Chinese Academy of Sciences, Shanghai, China
| | - Guangzhong Wang
- Institution of Computing Technology, Chinese Academy of Sciences, Shanghai, China
| | - Xiaolong Fu
- Department of Radiation Oncology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China.
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21
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Wei T, Lambert PF. Role of IQGAP1 in Carcinogenesis. Cancers (Basel) 2021; 13:3940. [PMID: 34439095 PMCID: PMC8391515 DOI: 10.3390/cancers13163940] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 07/28/2021] [Accepted: 08/02/2021] [Indexed: 12/31/2022] Open
Abstract
Scaffolding proteins can play important roles in cell signaling transduction. IQ motif-containing GTPase-activating protein 1 (IQGAP1) influences many cellular activities by scaffolding multiple key signaling pathways, including ones involved in carcinogenesis. Two decades of studies provide evidence that IQGAP1 plays an essential role in promoting cancer development. IQGAP1 is overexpressed in many types of cancer, and its overexpression in cancer is associated with lower survival of the cancer patient. Here, we provide a comprehensive review of the literature regarding the oncogenic roles of IQGAP1. We start by describing the major cancer-related signaling pathways scaffolded by IQGAP1 and their associated cellular activities. We then describe clinical and molecular evidence for the contribution of IQGAP1 in different types of cancers. In the end, we review recent evidence implicating IQGAP1 in tumor-related immune responses. Given the critical role of IQGAP1 in carcinoma development, anti-tumor therapies targeting IQGAP1 or its associated signaling pathways could be beneficial for patients with many types of cancer.
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Affiliation(s)
| | - Paul F. Lambert
- McArdle Laboratory for Cancer Research, Department of Oncology, University of Wisconsin School of Medicine and Public Health, Madison, WI 53705, USA;
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22
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Fréchette L, Degrandmaison J, Binda C, Boisvert M, Côté L, Michaud T, Lalumière MP, Gendron L, Parent JL. Identification of the interactome of the DP1 receptor for Prostaglandin D 2: Regulation of DP1 receptor signaling and trafficking by IQGAP1. Biochim Biophys Acta Gen Subj 2021; 1865:129969. [PMID: 34352343 DOI: 10.1016/j.bbagen.2021.129969] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 07/19/2021] [Accepted: 07/25/2021] [Indexed: 01/16/2023]
Abstract
BACKGROUND Mechanisms governing localization, trafficking and signaling of G protein-coupled receptors (GPCRs) are critical in cell function. Protein-protein interactions are determinant in these processes. However, there are very little interacting proteins known to date for the DP1 receptor for prostaglandin D2. METHODS We performed LC-MS/MS analyses of the DP1 receptor interactome in HEK293 cells. To functionally validate our LC-MS/MS data, we studied the implications of the interaction with the IQGAP1 scaffold protein in the trafficking and signaling of DP1. RESULTS In addition to expected interacting proteins such as heterotrimeric G protein subunits, we identified proteins involved in signaling, trafficking, and folding localized in various cell compartments. Endogenous DP1-IQGAP1 co-immunoprecipitation was observed in colon cancer HT-29 cells. The interaction was augmented by DP1 agonist activation in HEK293 cells and GST-pulldown assays showed that IQGAP1 binds to intracellular loops 2 and 3 of DP1. Co-localization of the two proteins was observed by confocal microscopy at the cell periphery and in intracellular vesicles in the basal state. PGD2 treatment resulted in the redistribution of the DP1-IQGAP1 co-localization in the perinuclear vicinity. DP1 receptor internalization was promoted by overexpression of IQGAP1, while it was diminished by IQGAP1 knockdown with DsiRNAs. DP1-mediated ERK1/2 activation was augmented and sustained overtime by overexpression of IQGAP1 when compared to DP1 expressed alone. IQGAP1 knockdown decreased ERK1/2 activation by DP1 stimulation. Interestingly, ERK1/2 signaling by DP1 was increased when IQGAP2 was silenced, while it was impaired by IQGAP3 knockdown. CONCLUSIONS Our findings define the putative DP1 interactome, a patho-physiologically important receptor, and validated the interaction with IQGAP1 in DP1 function. Our data also reveal that IQGAP proteins may differentially regulate GPCR signaling. GENERAL SIGNIFICANCE The identified putative DP1-interacting proteins open multiple lines of research in DP1 and GPCR biology in various cell compartments.
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Affiliation(s)
- Louis Fréchette
- Département de Médecine, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Canada; Institut de Pharmacologie de Sherbrooke, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Canada; Centre de recherche du Centre Hospitalier de l'Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - Jade Degrandmaison
- Département de Médecine, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Canada; Département de Pharmacologie-Physiologie, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Canada; Institut de Pharmacologie de Sherbrooke, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Canada; Centre de recherche du Centre Hospitalier de l'Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - Chantal Binda
- Département de Médecine, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Canada; Institut de Pharmacologie de Sherbrooke, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Canada; Centre de recherche du Centre Hospitalier de l'Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - Marilou Boisvert
- Département de Médecine, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Canada; Institut de Pharmacologie de Sherbrooke, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Canada; Centre de recherche du Centre Hospitalier de l'Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - Laurie Côté
- Département de Médecine, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Canada; Département de Pharmacologie-Physiologie, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Canada; Institut de Pharmacologie de Sherbrooke, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Canada; Centre de recherche du Centre Hospitalier de l'Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - Thomas Michaud
- Département de Médecine, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Canada; Institut de Pharmacologie de Sherbrooke, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Canada; Centre de recherche du Centre Hospitalier de l'Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - Marie-Pier Lalumière
- Département de Médecine, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Canada; Institut de Pharmacologie de Sherbrooke, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Canada; Centre de recherche du Centre Hospitalier de l'Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - Louis Gendron
- Département de Pharmacologie-Physiologie, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Canada; Département d'Anesthésiologie, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Canada; Institut de Pharmacologie de Sherbrooke, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Canada; Centre de recherche du Centre Hospitalier de l'Université de Sherbrooke, Sherbrooke, Québec, Canada
| | - Jean-Luc Parent
- Département de Médecine, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Canada; Institut de Pharmacologie de Sherbrooke, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, Canada; Centre de recherche du Centre Hospitalier de l'Université de Sherbrooke, Sherbrooke, Québec, Canada.
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Tan YJ, Lee YT, Mancera RL, Oon CE. BZD9L1 sirtuin inhibitor: Identification of key molecular targets and their biological functions in HCT 116 colorectal cancer cells. Life Sci 2021; 284:119747. [PMID: 34171380 DOI: 10.1016/j.lfs.2021.119747] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 05/22/2021] [Accepted: 06/11/2021] [Indexed: 02/07/2023]
Abstract
BZD9L1 was previously described as a SIRT1/2 inhibitor with anti-cancer activities in colorectal cancer (CRC), either as a standalone chemotherapy or in combination with 5-fluorouracil. BZD9L1 was reported to induce apoptosis in CRC cells; however, the network of intracellular pathways and crosstalk between molecular players mediated by BZD9L1 is not fully understood. This study aimed to uncover the mechanisms involved in BZD9L1-mediated cytotoxicity based on previous and new findings for the prediction and identification of related pathways and key molecular players. BZD9L1-regulated candidate targets (RCTs) were identified using a range of molecular, cell-based and biochemical techniques on the HCT 116 cell line. BZD9L1 regulated major cancer pathways including Notch, p53, cell cycle, NFκB, Myc/MAX, and MAPK/ERK signalling pathways. BZD9L1 also induced reactive oxygen species (ROS), regulated apoptosis-related proteins, and altered cell polarity and adhesion profiles. In silico analyses revealed that most RCTs were interconnected, and were involved in the modulation of catalytic activity, metabolism and transcription regulation, response to cytokines, and apoptosis signalling pathways. These RCTs were implicated in p53-dependent apoptosis pathway. This study provides the first assessment of possible associations of molecular players underlying the cytotoxic activity of BZD9L1, and establishes the links between RCTs and apoptosis through the p53 pathway.
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Affiliation(s)
- Yi Jer Tan
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, Penang 11800, Malaysia; Curtin Medical School, Curtin Health Innovation Research Institute (CHIRI) and Curtin Institute for Computation, Curtin University, GPO Box U1987, Perth, WA 6845, Australia
| | - Yeuan Ting Lee
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, Penang 11800, Malaysia
| | - Ricardo L Mancera
- Curtin Medical School, Curtin Health Innovation Research Institute (CHIRI) and Curtin Institute for Computation, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
| | - Chern Ein Oon
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, Penang 11800, Malaysia.
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24
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Yang J, Xu C, Wu M, Wu Y, Jia X, Zhou C, Zhang X, Ge S, Li Z, Zhang L. MicroRNA-124 inhibits hepatic stellate cells inflammatory cytokines secretion by targeting IQGAP1 through NF-κB pathway. Int Immunopharmacol 2021; 95:107520. [PMID: 33743313 DOI: 10.1016/j.intimp.2021.107520] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 02/17/2021] [Accepted: 02/17/2021] [Indexed: 01/01/2023]
Abstract
Liver fibrosis is a health concern that leads to organ failure mediated via production of inflammatory cytokines and fibrotic biomarkers. To date, there was no direct approved antifibrotic therapy, and current treatment was mainly the removal of the causative factor. Recent studies demonstrated that aberrant expression of miR-124 was involved in the progression of various liver diseases including hepatocellular carcinoma (HCC). However, whether miR-124 could function as a transcriptional regulator in the inflammatory cytokines secretion of liver fibrosis remains unclear. In this study, we demonstrated that the expression of miR-124 was downregulated in liver fibrosis tissues and TNF-α-induced LX-2 cells, concomitant with the upregulated expression of IQGAP1, suggesting that miR-124 and IQGAP1 might be associated with the development of inflammation in liver fibrosis. Therefore, we demonstrated that the overexpression of miR-124 and knockdown of IQGAP1 could lead to the downregulation of TNF-α, IL-1β and IL-6. While knockdown of miR-124 or overexpression of IQGAP1 showed reversed results. Moreover, dual luciferase reporter assays demonstrated that miR-124 specifically targeted the 3'-UTR of IQGAP1, and thus inhibited the expression of IQGAP1. Mechanistically, we found that the expression changes of miR-124 and IQGAP1 could be involved in inhibition or activation of NF-κB signaling pathway in response to TNF-α. In conclusion, these results indicated that miR-124 plays a crucial role in TNF-α-induced LX-2 cells via regulating NF-κB signaling pathway.
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Affiliation(s)
- Junfa Yang
- Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Institute of Clinical Pharmacology, Anhui Medical University, Hefei, China; School of Pharmacy, Anhui Medical University, Hefei 230032, China
| | - Changqing Xu
- The Third People's Hospital of Hefei (Hefei Third Clinical College of Anhui Medical University), Hefei, Anhui Province, China
| | - Maomao Wu
- Department of Pharmacy, Anhui Chest Hospital, Hefei, Anhui Province, China
| | - Ying Wu
- The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, China
| | - Xiaodi Jia
- Fujian Normal University, Fuzhou 350007, China
| | - Chang Zhou
- School of Basic Medical Science, Anhui Medical University, Hefei 230032, China
| | - Xianzheng Zhang
- Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Institute of Clinical Pharmacology, Anhui Medical University, Hefei, China
| | - Shenglin Ge
- The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, China.
| | - Zeng Li
- School of Pharmacy, Anhui Medical University, Hefei 230032, China.
| | - Lingling Zhang
- Key Laboratory of Anti-inflammatory and Immune Medicine, Ministry of Education, Institute of Clinical Pharmacology, Anhui Medical University, Hefei, China.
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25
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Proteins Marking the Sequence of Genotoxic Signaling from Irradiated Mesenchymal Stromal Cells to CD34+ Cells. Int J Mol Sci 2021; 22:ijms22115844. [PMID: 34072546 PMCID: PMC8197937 DOI: 10.3390/ijms22115844] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 05/19/2021] [Accepted: 05/26/2021] [Indexed: 12/12/2022] Open
Abstract
Non-targeted effects (NTE) of ionizing radiation may initiate myeloid neoplasms (MN). Here, protein mediators (I) in irradiated human mesenchymal stromal cells (MSC) as the NTE source, (II) in MSC conditioned supernatant and (III) in human bone marrow CD34+ cells undergoing genotoxic NTE were investigated. Healthy sublethal irradiated MSC showed significantly increased levels of reactive oxygen species. These cells responded by increasing intracellular abundance of proteins involved in proteasomal degradation, protein translation, cytoskeleton dynamics, nucleocytoplasmic shuttling, and those with antioxidant activity. Among the increased proteins were THY1 and GNA11/14, which are signaling proteins with hitherto unknown functions in the radiation response and NTE. In the corresponding MSC conditioned medium, the three chaperones GRP78, CALR, and PDIA3 were increased. Together with GPI, these were the only four altered proteins, which were associated with the observed genotoxic NTE. Healthy CD34+ cells cultured in MSC conditioned medium suffered from more than a six-fold increase in γH2AX focal staining, indicative for DNA double-strand breaks, as well as numerical and structural chromosomal aberrations within three days. At this stage, five proteins were altered, among them IQGAP1, HMGB1, and PA2G4, which are involved in malign development. In summary, our data provide novel insights into three sequential steps of genotoxic signaling from irradiated MSC to CD34+ cells, implicating that induced NTE might initiate the development of MN.
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Wei T, Choi S, Buehler D, Lee D, Ward-Shaw E, Anderson RA, Lambert PF. Role of IQGAP1 in Papillomavirus-Associated Head and Neck Tumorigenesis. Cancers (Basel) 2021; 13:2276. [PMID: 34068608 PMCID: PMC8126105 DOI: 10.3390/cancers13092276] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/28/2021] [Accepted: 05/06/2021] [Indexed: 12/14/2022] Open
Abstract
Approximately 25% of head and neck squamous cell carcinomas (HNSCC) are associated with human papillomavirus (HPV) infection. In these cancers as well as in HPV-associated anogenital cancers, PI3K signaling is highly activated. We previously showed that IQ motif-containing GTPase activating protein 1 (IQGAP1), a PI3K pathway scaffolding protein, is overexpressed in and contributes to HNSCC and that blocking IQGAP1-mediated PI3K signaling reduces HPV-positive HNSCC cell survival and migration. In this study, we tested whether IQGAP1 promotes papillomavirus (PV)-associated HNSCCs. IQGAP1 was necessary for optimal PI3K signaling induced by HPV16 oncoproteins in transgenic mice and MmuPV1 infection, a mouse papillomavirus that causes HNSCC in mice. Furthermore, we found that, at 6 months post-infection, MmuPV1-infected Iqgap1-/- mice developed significantly less severe tumor phenotypes than MmuPV1-infected Iqgap1+/+ mice, indicating a role of IQGAP1 in MmuPV1-associated HNSCC. The tumors resulting from MmuPV1 infection showed features consistent with HPV infection and HPV-associated cancer. However, such IQGAP1-dependent effects on disease severity were not observed in an HPV16 transgenic mouse model for HNC. This may reflect that IQGAP1 plays a role in earlier stages of viral pathogenesis, or other activities of HPV16 oncogenes are more dominant in driving carcinogenesis than their influence on PI3K signaling.
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Affiliation(s)
- Tao Wei
- McArdle Laboratory for Cancer Research, School of Medicine and Public Health, University of Wisconsin, Madison, WI 53705, USA; (T.W.); (D.L.); (E.W.-S.)
| | - Suyong Choi
- School of Medicine and Public Health, University of Wisconsin, Madison, WI 53705, USA; (S.C.); (R.A.A.)
| | - Darya Buehler
- Department of Pathology and Laboratory Medicine, School of Medicine and Public Health, University of Wisconsin, Madison, WI 53705, USA;
| | - Denis Lee
- McArdle Laboratory for Cancer Research, School of Medicine and Public Health, University of Wisconsin, Madison, WI 53705, USA; (T.W.); (D.L.); (E.W.-S.)
| | - Ella Ward-Shaw
- McArdle Laboratory for Cancer Research, School of Medicine and Public Health, University of Wisconsin, Madison, WI 53705, USA; (T.W.); (D.L.); (E.W.-S.)
| | - Richard A. Anderson
- School of Medicine and Public Health, University of Wisconsin, Madison, WI 53705, USA; (S.C.); (R.A.A.)
| | - Paul F. Lambert
- McArdle Laboratory for Cancer Research, School of Medicine and Public Health, University of Wisconsin, Madison, WI 53705, USA; (T.W.); (D.L.); (E.W.-S.)
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27
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Watzky M, de Dieuleveult M, Letessier A, Saint-Ruf C, Miotto B. Assessing the consequences of environmental exposures on the expression of the human receptor and proteases involved in SARS-CoV-2 cell-entry. ENVIRONMENTAL RESEARCH 2021; 195:110317. [PMID: 33069705 PMCID: PMC7560643 DOI: 10.1016/j.envres.2020.110317] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 09/09/2020] [Accepted: 10/07/2020] [Indexed: 05/06/2023]
Abstract
The role of environmental condition on the infection by the novel pathogenic SARS-CoV-2 virus remains uncertain. In here, exploiting a large panel of publicly available genome-wide data, we investigated whether the human receptor ACE2 and human proteases TMPRSS2, FURIN and CATHEPSINs (B, L and V), which are involved in SARS-CoV-2 cell entry, are transcriptionally regulated by environmental cues. We report that more than 50 chemicals modulate the expression of ACE2 or human proteases important for SARS-CoV-2 cell entry. We further demonstrate that transcription factor AhR, which is commonly activated by pollutants, binds to the promoter of TMPRSS2 and enhancers and/or promoters of Cathepsin B, L and V encoding genes. Our exploratory study documents an influence of environmental exposures on the expression of genes involved in SARS-CoV-2 cell entry. These results could be conceptually and medically relevant to our understanding of the COVID-19 disease, and should be further explored in laboratory and epidemiologic studies.
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Affiliation(s)
- Manon Watzky
- Université de Paris, Institut Cochin, INSERM, U1016, CNRS, UMR8104, F-75014, PARIS, France
| | - Maud de Dieuleveult
- Université de Paris, Institut Cochin, INSERM, U1016, CNRS, UMR8104, F-75014, PARIS, France
| | - Anne Letessier
- Université de Paris, Institut Cochin, INSERM, U1016, CNRS, UMR8104, F-75014, PARIS, France
| | - Claude Saint-Ruf
- Université de Paris, Institut Cochin, INSERM, U1016, CNRS, UMR8104, F-75014, PARIS, France
| | - Benoit Miotto
- Université de Paris, Institut Cochin, INSERM, U1016, CNRS, UMR8104, F-75014, PARIS, France.
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28
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Zhang B, Xiao J, Cheng X, Liu T. MAL2 interacts with IQGAP1 to promote pancreatic cancer progression by increasing ERK1/2 phosphorylation. Biochem Biophys Res Commun 2021; 554:63-70. [PMID: 33780861 DOI: 10.1016/j.bbrc.2021.02.146] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 02/28/2021] [Indexed: 12/17/2022]
Abstract
Pancreatic cancer is a digestive tract malignancy characterized by an occult onset and rapid progression. The genetic heterogeneity of pancreatic cancer is closely related to its highly malignant biological behavior. The myelin and lymphocyte protein 2 (MAL2) is upregulated in multiple cancers at the transcriptional level. However, the exact role of MAL2 in pancreatic cancer remains elusive. In this study, we demonstrated that MAL2 protein and mRNA levels were upregulated in pancreatic cancer. MAL2 overexpression was significantly associated with poor prognosis in patients with pancreatic cancer. We further showed that MAL2 interacted with IQGAP1 to increase ERK1/2 phosphorylation levels, which promoted pancreatic cancer progression. Therefore, these results suggest that MAL2 could be a novel therapeutic target for pancreatic cancer.
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Affiliation(s)
- Bin Zhang
- Department of Digestive Surgical Oncology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China; Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Jun Xiao
- Department of Digestive Surgical Oncology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China; Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Xiang Cheng
- Department of Digestive Surgical Oncology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China; Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Tao Liu
- Department of Digestive Surgical Oncology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China; Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
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29
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IQGAP1 Is a Scaffold of the Core Proteins of the Hippo Pathway and Negatively Regulates the Pro-Apoptotic Signal Mediated by This Pathway. Cells 2021; 10:cells10020478. [PMID: 33672268 PMCID: PMC7926663 DOI: 10.3390/cells10020478] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 02/13/2021] [Accepted: 02/20/2021] [Indexed: 12/21/2022] Open
Abstract
The Hippo pathway regulates a complex signalling network which mediates several biological functions including cell proliferation, organ size and apoptosis. Several scaffold proteins regulate the crosstalk of the members of the pathway with other signalling pathways and play an important role in the diverse output controlled by this pathway. In this study we have identified the scaffold protein IQGAP1 as a novel interactor of the core kinases of the Hippo pathway, MST2 and LATS1. Our results indicate that IQGAP1 scaffolds MST2 and LATS1 supresses their kinase activity and YAP1-dependent transcription. Additionally, we show that IQGAP1 is a negative regulator of the non-canonical pro-apoptotic pathway and may enable the crosstalk between this pathway and the ERK and AKT signalling modules. Our data also show that bile acids regulate the IQGAP1-MST2-LATS1 signalling module in hepatocellular carcinoma cells, which could be necessary for the inhibition of MST2-dependent apoptosis and hepatocyte transformation.
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30
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Wang J, Zhuang X, Greene KS, Si H, Antonyak MA, Druso JE, Wilson KF, Cerione RA, Feng Q, Wang H. Cdc42 functions as a regulatory node for tumour-derived microvesicle biogenesis. J Extracell Vesicles 2021; 10:e12051. [PMID: 33473262 PMCID: PMC7804048 DOI: 10.1002/jev2.12051] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 11/30/2020] [Accepted: 12/10/2020] [Indexed: 12/20/2022] Open
Abstract
Tumour-derived microvesicles (MVs) serve as critical mediators of cell-to-cell communication in the tumour microenvironment. So far, the underlying mechanisms of MV biogenesis, especially how key tumorigenesis signals such as abnormal EGF signalling regulates MV release, remain unclear. Here, we set out to establish reliable readouts for MV biogenesis and then explore the molecular mechanisms that regulate MV generation. We found that Rho family small G protein Cdc42 is a convergent node of multiple regulatory signals that occur in MV biogenesis. The binding of activated GTP-bound Cdc42 and its downstream effector, Ras GTPase-activating-like protein 1 (IQGAP1), is required for MV shedding. Activated Cdc42 maintains sustained EGF signalling by inhibiting the internalization of cell surface receptors, including EGFR and the VEGF oligomer, VEGF90K, and then facilitates MV release. Subsequently, we further demonstrated that blocking these signalling pathways using the corresponding mutants effectively reduced MV shedding and significantly inhibited MV-promoted in vivo tumour angiogenesis. These findings reveal a complex regulation of MV shedding by tumour cells, shedding light on the regulatory mechanism of MV biogenesis, and potentially contributing to strategies that target MVs in cancer therapy.
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Affiliation(s)
- Jing Wang
- Cancer Research Center The First Affiliated Hospital of USTC Division of Life Sciences and Medicine University of Science and Technology of China Hefei Anhui China.,National Center for Liver Cancer Eastern Hepatobiliary Surgery Hospital/Institute the Second Military Medical University Shanghai China
| | - Xiangjin Zhuang
- Cancer Research Center The First Affiliated Hospital of USTC Division of Life Sciences and Medicine University of Science and Technology of China Hefei Anhui China.,National Center for Liver Cancer Eastern Hepatobiliary Surgery Hospital/Institute the Second Military Medical University Shanghai China
| | - Kai Su Greene
- Department of Molecular Medicine Cornell University Ithaca New York USA
| | - Ha Si
- National Center for Liver Cancer Eastern Hepatobiliary Surgery Hospital/Institute the Second Military Medical University Shanghai China.,Affiliated Hospital of Inner Mongolia University for the Nationalities Tongliao Inner Mongolia China
| | - Marc A Antonyak
- Department of Molecular Medicine Cornell University Ithaca New York USA
| | - Joseph E Druso
- Department of Molecular Medicine Cornell University Ithaca New York USA
| | - Kristin F Wilson
- Department of Molecular Medicine Cornell University Ithaca New York USA
| | - Richard A Cerione
- Department of Molecular Medicine Cornell University Ithaca New York USA.,Department of Chemistry and Chemical Biology Cornell University Ithaca New York USA
| | - Qiyu Feng
- Cancer Research Center The First Affiliated Hospital of USTC Division of Life Sciences and Medicine University of Science and Technology of China Hefei Anhui China.,National Center for Liver Cancer Eastern Hepatobiliary Surgery Hospital/Institute the Second Military Medical University Shanghai China
| | - Hongyang Wang
- Cancer Research Center The First Affiliated Hospital of USTC Division of Life Sciences and Medicine University of Science and Technology of China Hefei Anhui China.,National Center for Liver Cancer Eastern Hepatobiliary Surgery Hospital/Institute the Second Military Medical University Shanghai China
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31
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Shen EP, Chen MR, Chen WL, Chu HS, Chen KL, Hu FR. Knockdown of IQGAP-1 Enhances Tight Junctions and Prevents P. aeruginosa Invasion of Human Corneal Epithelial Cells. Ocul Immunol Inflamm 2020; 28:876-883. [PMID: 31621455 DOI: 10.1080/09273948.2019.1642494] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
PURPOSE To determine the role of IQ-domain GTPase-activating protein1 (IQGAP-1) in tight junctions of human corneal epithelial cells (HCECs) and its effect against P. aeruginosa (PAK) invasion. MATERIAL AND METHODS Primary human corneal epithelial cells (HCECs), immortalized HCECs, and IQGAP-1 RNA knockdown HCECs (siHCECs) were used. Confocal microscopy, transepithelial electrical resistance (TER), trypan blue exclusion assay and gentamicin invasion assay were done. RESULTS In primary and immortalized HCECs, IQGAP-1 co-localized with zonular occludin-1 (ZO-1) and actin. Enhanced actin and ZO-1 aggregation were seen in siHCECs. IQGAP-1 knockdown significantly increased TER of immortalized HCECs (P < .0001). Cell viability after PAK infection increased for siHCECs for up to 4 h after infection. PAK intracellular invasion was significantly lowered by 50% in siHCECs at 1 h post-infection. CONCLUSION IQGAP-1 knockdown increased the strength and integrity of tight junctions and may provide an early protective effect against P. aeruginosa invasion.
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Affiliation(s)
- Elizabeth P Shen
- Department of Ophthalmology, Taipei Tzu Chi Hospital, The Buddhist Tzu Chi Medical Foundation , Taipei, Taiwan.,School of Medicine, Tzu Chi University , Hua-Liang, Taiwan.,Department of Ophthalmology, National Taiwan University Hospital, College of Medicine, National Taiwan University , Taipei, Taiwan
| | - Mei-Ru Chen
- Graduate Institute and Department of Microbiology, College of Medicine, National Taiwan University , Taipei, Taiwan
| | - Wei-Li Chen
- Department of Ophthalmology, National Taiwan University Hospital, College of Medicine, National Taiwan University , Taipei, Taiwan
| | - Hsiao-Sang Chu
- Department of Ophthalmology, National Taiwan University Hospital, College of Medicine, National Taiwan University , Taipei, Taiwan
| | - Kai-Li Chen
- Department of Ophthalmology, National Taiwan University Hospital, College of Medicine, National Taiwan University , Taipei, Taiwan
| | - Fung-Rong Hu
- Department of Ophthalmology, National Taiwan University Hospital, College of Medicine, National Taiwan University , Taipei, Taiwan
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Enhancement of Migration and Invasion of Gastric Cancer Cells by IQGAP3. Biomolecules 2020; 10:biom10081194. [PMID: 32824461 PMCID: PMC7465220 DOI: 10.3390/biom10081194] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 07/20/2020] [Accepted: 07/29/2020] [Indexed: 12/23/2022] Open
Abstract
Although gastric cancer is one of the most common causes of cancer death in the world, mechanisms underlying this type of tumor have not been fully understood. In this study, we found that IQGAP3, a member of the IQGAP gene family, was significantly up-regulated in human gastric cancer starting from the early stages of tumor progression. Overexpression of IQGAP3 in 293T and NIH3T3 cells, which have no endogenous IQGAP3 expression, resulted in morphological change with multiple dendritic-like protrusions and enhanced migration. Overexpression of IQGAP3 also led to reduced cell–cell adhesion in 293T cells, likely as a result of its interactions with e-cadherin or β-catenin proteins. Additionally, IQGAP3 accumulated along the leading edge of migrating cells and at the cleavage furrow of dividing cells. In contrast, suppression of IQGAP3 by short-interfering RNA (siRNA) markedly reduced invasion and anchorage-independent growth of MKN1 and TMK-1 gastric cancer cells. We further confirmed that IQGAP3 interacted with Rho family GTPases, and had an important role in cytokinesis. Taken together, we demonstrated that IQGAP3 plays critical roles in migration and invasion of human gastric cancer cells, and regulates cytoskeletal remodeling, cell migration and adhesion. These findings may open a new avenue for the diagnosis and treatment of gastric cancer.
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He C, Jaffar Ali D, Li Y, Zhu Y, Sun B, Xiao Z. Engineering of HN3 increases the tumor targeting specificity of exosomes and upgrade the anti-tumor effect of sorafenib on HuH-7 cells. PeerJ 2020; 8:e9524. [PMID: 33062407 PMCID: PMC7527773 DOI: 10.7717/peerj.9524] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 06/20/2020] [Indexed: 12/14/2022] Open
Abstract
Safe, efficient and cancer cell targeted delivery of CRISPR/Cas9 is important to increase the effectiveness of available cancer treatments. Although cancer derived exosomes offer significant advantages, the fact that it carries cancer related/inducing signaling molecules impedes them from being used as a reliable drug delivery vehicle. In this study, we report that normal epithelial cell-derived exosomes engineered to have HN3 (HN3LC9-293exo), target tumor cells as efficiently as that of the cancer cell-derived exosomes (C9HuH-7exo). HN3LC9-293exo were quickly absorbed by the recipient cancer cell in vitro. Anchoring HN3 to the membrane of the exosomes using LAMP2, made HN3LC9-293exo to specifically enter the GPC3+ HuH-7 cancer cells than the GPC3− LO2 cells in a co-culture model. Further, sgIQ 1.1 plasmids were loaded to exosomes and surprisingly, in combination with sorafenib, synergistic anti-proliferative and apoptotic effect of loaded HN3LC9-293exo was more than the loaded C9HuH-7exo. While cancer-derived exosomes might induce the drug resistance and tumor progression, normal HEK-293 cells-derived exosomes with modifications for precise cancer cell targeting like HN3LC9-293exo can act as better, safe and natural delivery systems to improve the efficacy of the cancer treatments.
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Affiliation(s)
- Cong He
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu, China
| | - Doulathunnisa Jaffar Ali
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu, China.,Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, Jiangsu, China
| | - Yumin Li
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu, China
| | - Yanliang Zhu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu, China
| | - Bo Sun
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu, China
| | - Zhongdang Xiao
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu, China
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34
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Mo CF, Li J, Yang SX, Guo HJ, Liu Y, Luo XY, Wang YT, Li MH, Li JY, Zou Q. IQGAP1 promotes anoikis resistance and metastasis through Rac1-dependent ROS accumulation and activation of Src/FAK signalling in hepatocellular carcinoma. Br J Cancer 2020; 123:1154-1163. [PMID: 32632148 PMCID: PMC7525663 DOI: 10.1038/s41416-020-0970-z] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 04/01/2020] [Accepted: 06/18/2020] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Hepatitis B virus (HBV) has a crucial role in the progression of hepatocellular carcinoma (HCC). Tumour cells must develop anoikis resistance in order to survive before metastasis. This study aimed to investigate the mechanism of IQGAP1 in HBV-mediated anoikis evasion and metastasis in HCC cells. METHODS IQGAP1 expression was detected by immunohistochemistry, real-time PCR and immunoblot analysis. Lentiviral-mediated stable upregulation or knockdown of IGAQP1, immunoprecipitation, etc. were used in function and mechanism study. RESULTS IQGAP1 was markedly upregulated in HBV-positive compared with HBV-negative HCC cells and tissues. IQGAP1 was positively correlated to poor prognosis of HBV-associated HCC patients. IQGAP1 overexpression significantly enhanced the anchorage-independent growth and metastasis, whereas IQGAP1-deficient HCC cells are more sensitive to anoikis. Mechanistically, we found that HBV-induced ROS enhanced the association of IQGAP1 and Rac1 that activated Rac1, leading to phosphorylation of Src/FAK pathway. Antioxidants efficiently inhibited IQGAP1-mediated anoikis resistance and metastasis. CONCLUSIONS Our study indicated an important mechanism by which upregulated IQGAP1 by HBV promoted anoikis resistance, migration and invasion of HCC cells through Rac1-dependent ROS accumulation and activation of Src/FAK signalling, suggesting IQGAP1 as a prognostic indicator and a novel therapeutic target in HCC patients with HBV infection.
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Affiliation(s)
- Chun-Fen Mo
- Department of Immunology, School of Basic Medical Sciences, Chengdu Medical College, Chengdu, China.
| | - Jun Li
- Department of Gastroenterology, The first affiliated hospital of Chengdu medical college, Chengdu, China
| | - Shu-Xia Yang
- Department of Immunology, School of Basic Medical Sciences, Chengdu Medical College, Chengdu, China
| | - Hui-Jie Guo
- Department of Immunology, School of Basic Medical Sciences, Chengdu Medical College, Chengdu, China
| | - Yang Liu
- Department of Immunology, School of Basic Medical Sciences, Chengdu Medical College, Chengdu, China
| | - Xing-Yan Luo
- Department of Immunology, School of Basic Medical Sciences, Chengdu Medical College, Chengdu, China
| | - Yan-Tang Wang
- Department of Immunology, School of Basic Medical Sciences, Chengdu Medical College, Chengdu, China
| | - Min-Hui Li
- Department of Immunology, School of Basic Medical Sciences, Chengdu Medical College, Chengdu, China
| | - Jing-Yi Li
- Department of Urology, The Second Affiliated Hospital of Chengdu Medical College, China National Nuclear Corporation 416 Hospital, Chengdu, China. .,School of Biological Sciences and Technology, Chengdu Medical College, Chengdu, China.
| | - Qiang Zou
- Department of Immunology, School of Basic Medical Sciences, Chengdu Medical College, Chengdu, China.
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35
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Wei T, Lambert PF. A highway to carcinogenesis: the role of IQGAP1, a signaling scaffolding protein, in head and neck cancer development. Oncoscience 2020; 7:49-51. [PMID: 32923516 PMCID: PMC7458336 DOI: 10.18632/oncoscience.511] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 04/30/2020] [Indexed: 12/17/2022] Open
Abstract
Head and neck squamous cell carcinoma (HNSCC) is the sixth most frequent cancer worldwide. One of the most critical signaling pathways in HNSCC is the Epidermal Growth Factor Receptor/ Phosphatidylinositol 3-Kinase (EGFR/PI3K) pathway. IQ motif-containing GTPase- activating protein 1 (IQGAP1), a protein upregulated in multiple types of cancer, acts as a scaffold for this pathway and others implicated in cancer. IQGAP1 is overexpressed in HNSCCs, and its overexpression correlates with poorer prognosis in HNSCC patients, indicating that IQGAP1 might be important in HNSCC development. Here, we summarized our recent demonstrating a role of IQGAP1 in promoting HNSCC, at least in part, by scaffolding the EGFR/PI3K signaling pathway.
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Affiliation(s)
- Tao Wei
- McArdle Laboratory for Cancer Research, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
| | - Paul F. Lambert
- McArdle Laboratory for Cancer Research, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
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36
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Dongol S, Zhang Q, Qiu C, Sun C, Zhang Z, Wu H, Kong B. IQGAP3 promotes cancer proliferation and metastasis in high-grade serous ovarian cancer. Oncol Lett 2020; 20:1179-1192. [PMID: 32724358 PMCID: PMC7377165 DOI: 10.3892/ol.2020.11664] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 04/22/2020] [Indexed: 12/14/2022] Open
Abstract
Ovarian cancer is a type of gynecological cancer with the highest mortality rate worldwide. Due to a lack of effective screening methods, most cases are diagnosed at later stages where the survival rates are poor. Thus, it is termed a ‘silent killer’ and is the most lethal of all the malignancies in women. IQ motif containing GTPase Activating Protein 3 (IQGAP3) is a member of the Rho family of GTPases, and plays a crucial role in the development and progression of several types of cancer. The aim of the present study was to investigate the oncogenic functions and mechanisms of IQGAP3 on the proliferation and metastasis of high-grade serous ovarian cancer (HGSOC). Therefore, the expression levels of IQGAP3 in HGSOC and normal tissue samples were compared, and IQGAP3 knockdown was performed to examine its functional role using various in vitro and in vivo experiments. It was demonstrated that the expression of IQGAP3 was upregulated in HGSOC tissues compared with the healthy tissues; this differential expression was also observed in the ovarian cancer cell lines. Functional experimental results suggested that IQGAP3 silencing significantly reduced proliferation, migration and invasion in ovarian cancer cell lines. Moreover, in vivo experimental findings validated the in vitro results, where the tumorigenic and metastatic capacities of IQGAP3-silenced cells were significantly lower in the nude mice compared with the mice implanted with the control cells. Furthermore, knockdown of IQGAP3 resulted in increased apoptosis, and the effects of IQGAP3 expression on various epithelial-mesenchymal transition markers were identified, suggesting a possible mechanism associated with the role of IQGAP3 in metastasis. The effect of IQGAP3 silencing on chemosensitivity towards olaparib was also assessed. Collectively, the present results indicated that IQGAP3 is a potential diagnostic and prognostic marker, and a putative therapeutic target of HGSOC.
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Affiliation(s)
- Samina Dongol
- Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Ji'nan, Shandong 250012, P.R. China.,Key Laboratory of Gynecologic Oncology of Shandong, Qilu Hospital of Shandong University, Ji'nan, Shandong 250012, P.R. China
| | - Qing Zhang
- Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Ji'nan, Shandong 250012, P.R. China.,Key Laboratory of Gynecologic Oncology of Shandong, Qilu Hospital of Shandong University, Ji'nan, Shandong 250012, P.R. China
| | - Chunping Qiu
- Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Ji'nan, Shandong 250012, P.R. China.,Key Laboratory of Gynecologic Oncology of Shandong, Qilu Hospital of Shandong University, Ji'nan, Shandong 250012, P.R. China
| | - Chenggong Sun
- Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Ji'nan, Shandong 250012, P.R. China.,Key Laboratory of Gynecologic Oncology of Shandong, Qilu Hospital of Shandong University, Ji'nan, Shandong 250012, P.R. China
| | - Zhiwei Zhang
- Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Ji'nan, Shandong 250012, P.R. China.,Key Laboratory of Gynecologic Oncology of Shandong, Qilu Hospital of Shandong University, Ji'nan, Shandong 250012, P.R. China
| | - Huan Wu
- Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Ji'nan, Shandong 250012, P.R. China.,Key Laboratory of Gynecologic Oncology of Shandong, Qilu Hospital of Shandong University, Ji'nan, Shandong 250012, P.R. China
| | - Beihua Kong
- Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Ji'nan, Shandong 250012, P.R. China.,Key Laboratory of Gynecologic Oncology of Shandong, Qilu Hospital of Shandong University, Ji'nan, Shandong 250012, P.R. China
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37
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Epithelial cell -derived microvesicles: A safe delivery platform of CRISPR/Cas9 conferring synergistic anti-tumor effect with sorafenib. Exp Cell Res 2020; 392:112040. [PMID: 32380039 DOI: 10.1016/j.yexcr.2020.112040] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 04/25/2020] [Accepted: 04/28/2020] [Indexed: 12/27/2022]
Abstract
Safe and efficient intracellular delivery of CRISPR/Cas9 is a key step for effective therapeutic genome editing in a wide range of diseases. This remains challenging due to multiple drawbacks of the currently available vehicles. Here we report that epithelial cell -derived microvesicles (MVs) function as safe and natural carriers for efficient delivery of CRISPR/Cas9 to treat cancer. In our study, compared to epithelial cell -derived MVs, cancer -derived MVs were quickly absorbed intracellularly by recipient cancer cells in vitro and showed selective accumulation in tumors of HepG2 xenografts in vivo, due to their cancer cell tropism dependent targeting. Surprisingly, synergistic anti-tumor effect of sgIQ 1.1 loaded Cas9MVs/HEK293 + sorafenib was better than sgIQ 1.1 + Cas9MVs/HepG2 + sorafenib in vitro. In addition, qPCR results showed that miR-21 and miR-181a expression were upregulated in HepG2 cells treated with cancer cell -derived MVs that might support the cancer progression. Further, treatment of HepG2 xenografts with sgIQ 1.1 loaded Cas9MVs/HEK293 showed enhanced anti-cancer effect than sgIQ 1.1 + Cas9MVs/HepG2. Therefore, we conclude that normal cells -derived MVs can act as better and safe natural delivery systems for cancer therapeutics in the future.
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38
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Xu L, Shao Y, Ren L, Liu X, Li Y, Xu J, Ye Y. IQGAP2 Inhibits Migration and Invasion of Gastric Cancer Cells via Elevating SHIP2 Phosphatase Activity. Int J Mol Sci 2020; 21:ijms21061968. [PMID: 32183047 PMCID: PMC7139352 DOI: 10.3390/ijms21061968] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Revised: 03/09/2020] [Accepted: 03/12/2020] [Indexed: 12/30/2022] Open
Abstract
Previous studies have shown reduced expression of Src homology 2-containing inositol 5-phosphatase 2 (SHIP2) and its tumor-suppressive role in gastric cancer (GC). However, the precise role of SHIP2 in the migration and invasion of GC cells remains unclear. Here, an IQ motif containing the GTPase-activating protein 2 (IQGAP2) as a SHIP2 binding partner, was screened and identified by co-immunoprecipitation and mass spectrometry studies. While IQGAP2 ubiquitously expressed in GC cells, IQGAP2 and SHIP2 co-localized in the cytoplasm of GC cells, and this physical association was confirmed by the binding of IQGAP2 to PRD and SAM domains of SHIP2. The knockdown of either SHIP2 or IQGAP2 promoted cell migration and invasion by inhibiting SHIP2 phosphatase activity, activating Akt and subsequently increasing epithelial–mesenchymal transition (EMT). Furthermore, knockdown of IQGAP2 in SHIP2-overexpressing GC cells reversed the inhibition of cell migration and invasion by SHIP2 induction, which was associated with the suppression of elevated SHIP2 phosphatase activity. Moreover, the deletion of PRD and SAM domains of SHIP2 abrogated the interaction and restored cell migration and invasion. Collectively, these results indicate that IQGAP2 interacts with SHIP2, leading to the increment of SHIP2 phosphatase activity, and thereby inhibiting the migration and invasion of GC cells via the inactivation of Akt and reduction in EMT.
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Affiliation(s)
| | | | | | | | | | | | - Yan Ye
- Correspondence: ; Tel.: +86-551-65161139
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39
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Chekalin EV, Zolotarenko AD, Bruskin SA. IQGAP Genes in Psoriasis. RUSS J GENET+ 2020. [DOI: 10.1134/s1022795420030047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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40
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Fu L, Cui CP, Zhang X, Zhang L. The functions and regulation of Smurfs in cancers. Semin Cancer Biol 2019; 67:102-116. [PMID: 31899247 DOI: 10.1016/j.semcancer.2019.12.023] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 11/10/2019] [Accepted: 12/26/2019] [Indexed: 02/06/2023]
Abstract
Smad ubiquitination regulatory factor 1 (Smurf1) and Smurf2 are HECT-type E3 ubiquitin ligases, and both Smurfs were initially identified to regulate Smad protein stability in the TGF-β/BMP signaling pathway. In recent years, Smurfs have exhibited E3 ligase-dependent and -independent activities in various kinds of cells. Smurfs act as either potent tumor promoters or tumor suppressors in different tumors by regulating biological processes, including metastasis, apoptosis, cell cycle, senescence and genomic stability. The regulation of Smurfs activity and expression has therefore emerged as a hot spot in tumor biology research. Further, the Smurf1- or Smurf2-deficient mice provide more in vivo clues for the functional study of Smurfs in tumorigenesis and development. In this review, we summarize these milestone findings and, in turn, reveal new avenues for the prevention and treatment of cancer by regulating Smurfs.
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Affiliation(s)
- Lin Fu
- Institute of Chronic Disease, Qingdao Municipal Hospital, Qingdao University, Qingdao 266000, China
| | - Chun-Ping Cui
- State Key Laboratory of Proteomics, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing 100850, China
| | - Xueli Zhang
- Department of General Surgery, Shanghai Fengxian Central Hospital Graduate Training Base, Fengxian Hospital, Southern Medical University, Shanghai, China.
| | - Lingqiang Zhang
- Institute of Chronic Disease, Qingdao Municipal Hospital, Qingdao University, Qingdao 266000, China; State Key Laboratory of Proteomics, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing 100850, China; Peixian People's Hospital, Jiangsu Province 221600, China.
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41
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Correlation of pterygium severity with IQ-domain GTPase-activating protein 1 (IQGAP1) and mast cells. Exp Eye Res 2019; 190:107896. [PMID: 31836492 DOI: 10.1016/j.exer.2019.107896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 12/04/2019] [Accepted: 12/09/2019] [Indexed: 11/23/2022]
Abstract
IQ-domain GTPase-activating protein 1 (IQGAP1) is a multidomain scaffold protein that is involved in cytoskeleton dynamics and tumor metastasis. Although the role of IQGAP1 in various cancers had been reported, the function of IQGAP1 in pterygium has not been studied. In this study, surgically excised pterygium and control conjunctival tissue from cataract patients were analysed by immunohistochemistry, confocal microscopy, and Western blot for IQGAP1 expression, mast cell counts, and microvascular count. Pterygium was clinically divided into mild and severe types according to Tan's classification and Kim's criteria based on translucency and vascularity of the tissue. Greater clinical severity of pterygium was associated with higher expression of IQGAP1 expression. Compared to normal conjunctival tissue, severe pterygium had significantly higher IQGAP1 expression (P = 0.005), which strongly correlated to the number of microvessels (P = 0.003) and mast cells (P = 0.01). Confocal microscopy revealed IQGAP1 colocalization with mast cell and CD31. IQGAP1 expression was higher in the pterygium body compared to the head. In conclusion, the level of IQGAP1 expression was found to be correlated to the clinical severity of pterygium. Mast cells were identified in pterygium and is suspected to be involved in promoting fibrovascular invasion.
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42
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Okuyama Y, Nagashima H, Ushio-Fukai M, Croft M, Ishii N, So T. IQGAP1 restrains T-cell cosignaling mediated by OX40. FASEB J 2019; 34:540-554. [PMID: 31914585 DOI: 10.1096/fj.201900879rr] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 10/25/2019] [Accepted: 11/01/2019] [Indexed: 12/17/2022]
Abstract
A costimulatory signal from the tumor necrosis factor receptor (TNFR) family molecule OX40 (CD134), which is induced on activated T cells, is important for T-cell immunity. Aberrant OX40 cosignaling has been implicated in autoimmune and inflammatory disorders. However, the molecular mechanism by which the OX40 cosignaling regulates the T-cell response remains obscure. We found that OX40 associated with a scaffold protein, IQ motif-containing GTPase-activating protein 1 (IQGAP1) after ligation by its ligand OX40L. Naïve CD4+ T cells from Iqgap1-/- mice displayed enhanced proliferation and cytokine secretion upon receiving OX40 cosignaling. A C-terminal IQGAP1 region was responsible for its association with OX40, and TNFR-associated factor 2 (TRAF2) bridged these two proteins. The enhanced cytokine response in Iqgap1-/- T cells was restored by the expression of the C-terminal IQGAP1. Thus, the IQGAP1 binding limits the OX40 cosignaling. Disease severity of experimental autoimmune encephalomyelitis (EAE) was significantly exacerbated in Iqgap1-/- mice as compared to wild-type mice. Additionally, recipient mice with Iqgap1-/- donor CD4+ T cells exhibited significantly higher EAE scores than those with their wild-type counterparts, and OX40 blockade led to a significant reduction in the EAE severity. Thus, our study defines an important component of the OX40 cosignaling that restricts inflammation driven by antigen-activated T cells.
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Affiliation(s)
- Yuko Okuyama
- Department of Microbiology and Immunology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Hiroyuki Nagashima
- Department of Microbiology and Immunology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Masuko Ushio-Fukai
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, GA, USA
| | - Michael Croft
- Division of Immune Regulation, La Jolla Institute for Allergy and Immunology, La Jolla, CA, USA
| | - Naoto Ishii
- Department of Microbiology and Immunology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Takanori So
- Department of Microbiology and Immunology, Tohoku University Graduate School of Medicine, Sendai, Japan.,Laboratory of Molecular Cell Biology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
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Jin Z, Zhou S, Ye H, Jiang S, Yu K, Ma Y. The mechanism of SP1/p300 complex promotes proliferation of multiple myeloma cells through regulating IQGAP1 transcription. Biomed Pharmacother 2019; 119:109434. [PMID: 31536933 DOI: 10.1016/j.biopha.2019.109434] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 09/05/2019] [Accepted: 09/05/2019] [Indexed: 01/12/2023] Open
Abstract
Our previous research had firstly shown that MM cells overexpressed IQGAP1 gene and activated Ras/Raf/MEK/ERK pathway. But the mechanism of IQGAP1 overexpression and IQGAP1 gene transcription regulation remains uncertain. The mechanism of IQGAP1 overexpression and transcriptional regulation of IQGAP1 gene in myeloma cells was explored in the study. Through bioinformatics analysis and prediction we predicted and screened transcription factor Sp1 as a possible upstream regulator of IQGAP1.The proliferation, cell cycle and downstream ERK1/2 and p-ERK1/2 proteins were detected after siRNA-IQGAP1 was transfected to myeloma cells. The expression of Sp1, p300, IQGAP1, p-ERK1/2 and ERK1/2 were detected after Sp1 and p300 were inhibited or overexpressed respectively. The dual-luciferase reporter system was used to detect the activity of IQGAP1 gene promoter. CHIP was used to detect the binding of the Sp1 and IQGAP1 promoter regions.CO-IP was used to explore the interaction between Sp1 and p300.The mRNA expression levels of Sp1,p300 and IQGAP1 of the myeloma patients were detected, and the correlation analysis of their mRNA expression levels were carried out. The results showed IQGAP1-siRNA inhibits cell proliferation, cell cycle, IQGAP1 expression and phosphorylation of ERK1/2 protein. Inhibition of Sp1 or p300 down-regulated ERK1/2 and IQGAP1 expression; overexpression of Sp1 or p300 up-regulated ERK1/2 and IQGAP1 expression; Sp1 and p300 had a positive regulation effect on IQGAP1.Over expression of Sp1 or p300 significantly increased activity of IQGAP1 gene promoter. The transcription factor Sp1 plays a regulatory role in the IQGAP1 promoter region. There is an interaction between Sp1 and p300 in myeloma cells. The mRNA expression levels of Sp1, IQGAP1 and p300 in MM samples showed a positive correlation. In summary IQGAP1 is required for cell proliferation in MM cells, and the transcription of Sp1/p300 complex regulates expression of IQGAP1 gene.
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Affiliation(s)
- Zhouxiang Jin
- Department of General Surgery, Gastric Cancer Research Center, The Second Affiliated Hospital of Wenzhou Medical University, 109 Xue Yuan Western Road, Wenzhou, 325027, China
| | - Shujuan Zhou
- Department of Hematology, The First Affiliated Hospital of Wenzhou Medical University, NanBai Xiang, Wenzhou, 325000, China
| | - Haige Ye
- Department of Hematology, The First Affiliated Hospital of Wenzhou Medical University, NanBai Xiang, Wenzhou, 325000, China
| | - Songfu Jiang
- Department of Hematology, The First Affiliated Hospital of Wenzhou Medical University, NanBai Xiang, Wenzhou, 325000, China.
| | - Kang Yu
- Department of Hematology, The First Affiliated Hospital of Wenzhou Medical University, NanBai Xiang, Wenzhou, 325000, China.
| | - Yongyong Ma
- Department of Hematology, The First Affiliated Hospital of Wenzhou Medical University, NanBai Xiang, Wenzhou, 325000, China.
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Hu G, Liu H, Wang M, Peng W. IQ Motif Containing GTPase-Activating Protein 3 (IQGAP3) Inhibits Kaempferol-Induced Apoptosis in Breast Cancer Cells by Extracellular Signal-Regulated Kinases 1/2 (ERK1/2) Signaling Activation. Med Sci Monit 2019; 25:7666-7674. [PMID: 31605603 PMCID: PMC6807529 DOI: 10.12659/msm.915642] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 04/23/2019] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Breast cancer (BC), a prevalent and heterogeneous disease of glandular breast tissue, is the most common cancer in women. The interaction between Kaempferol and IQ motif containing GTPase-activating protein 3 (IQGAP3) in BC and its underlying mechanism are poorly defined. MATERIAL AND METHODS After natural phytochemicals treatment, the expression of IQGAP3 in BC cells (ZR-75-30 and BT474) was detected by real-time PCR. Then, the proliferation and apoptosis in BC cells with different gradient concentrations (10, 25, 50, and 100 µmol/l) of Kaempferol treatment were detected. After treatment with Kaempferol or epidermal growth factor (EGF), we assessed apoptosis and expression of related genes. RESULTS We found that natural phytochemicals, especially Kaempferol, decreased IQGAP3 expression in BC cells. Kaempferol significantly induced proliferation inhibition and apoptosis in BC cells, concurrent with decreased IQGAP3 expression. Upregulation of IQGAP3 inhibited apoptosis in BC cells, along with increased expression of phosphorylated extracellular signal-regulated kinases 1/2 (p-ERK1/2) and B cell lymphoma 2 (Bcl2) and decreased Bcl-2-associated X protein (Bax) expression, which was counteracted by Kaempferol treatment. EGF markedly inhibited Kaempferol-induced apoptosis in BC cells, and ERK1/2 inhibitor PD98059 had an effect similar to that of Kaempferol. CONCLUSIONS IQGAP3 may be a potential target gene for Kaempferol in the treatment of BC, and upregulation of IQGAP3 inhibits Kaempferol-induced apoptosis in BC cells by ERK1/2 signaling activation. Targeting IQGAP3 may contribute to the study of natural phytochemicals as anti-tumor drugs in BC.
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Affiliation(s)
- Gaowu Hu
- Department of General Surgery, Shanghai Traditional Chinese Medicine-Integrated Hospital, Shanghai, P.R. China
| | - Huajiang Liu
- Department of Chinese Medicine, Jinshan Hospital of Fudan University, Shanghai, P.R. China
| | - Ming Wang
- Department of General Surgery, Shanghai Traditional Chinese Medicine-Integrated Hospital, Shanghai, P.R. China
| | - Wei Peng
- Department of General Surgery, Shanghai Traditional Chinese Medicine-Integrated Hospital, Shanghai, P.R. China
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Wei T, Choi S, Buehler D, Anderson RA, Lambert PF. A PI3K/AKT Scaffolding Protein, IQ Motif-Containing GTPase Associating Protein 1 (IQGAP1), Promotes Head and Neck Carcinogenesis. Clin Cancer Res 2019; 26:301-311. [PMID: 31597661 DOI: 10.1158/1078-0432.ccr-19-1063] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 08/15/2019] [Accepted: 10/03/2019] [Indexed: 12/12/2022]
Abstract
PURPOSE Head and neck cancer (HNC) is the sixth most common cancer worldwide with a 5-year survival rate of less than 50%. The PI3K/AKT/mTOR signaling pathway is frequently implicated in HNC. Recently, IQ motif-containing GTPase-activating protein 1 (IQGAP1) was discovered to scaffold the PI3K/AKT signaling pathway. IQGAP1 gene expression is increased in HNC, raising the hypothesis that IQGAP1 contributes to HNC. EXPERIMENTAL DESIGN We performed a combination of in vitro studies using human cancer cell lines treated with a cell-permeable peptide that interferes with IQGAP1's ability to bind to PI3K, and in vivo studies utilizing mice genetically knocked out for the Iqgap1 (Iqgap1 -/-). In vivo EGF stimulation assays were used to evaluate PI3K signaling. To study the role of IQGAP1 in HNC, we used a well-validated mouse model that drives HNC via a synthetic oral carcinogen, 4-nitroquinoline 1-oxide (4NQO). RESULTS IQGAP1 is necessary for efficient PI3K signaling in vitro and in vivo. Disruption of IQGAP1-scaffolded PI3K/AKT signaling reduced HNC cell survival. Iqgap1 -/- mice had significantly lower cancer incidences, lesser disease severity, and fewer cancer foci. IQGAP1 protein levels were increased in HNC arising in Iqgap1+/+ mice. The level of PI3K signaling in 4NQO-induced HNC arising in Iqgap1 -/- mice was significantly reduced, consistent with the hypothesis that IQGAP1 contributes to HNC at least partly through PI3K signaling. High IQGAP1 expression correlated with reduced survival, and high pS6 levels correlated with high IQGAP1 levels in patients with HNC. CONCLUSIONS These data demonstrate that IQGAP1 contributes to head and neck carcinogenesis.
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Affiliation(s)
- Tao Wei
- McArdle Laboratory for Cancer Research, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Suyong Choi
- University of Wisconsin-Madison, School of Medicine and Public Health, Madison, Wisconsin
| | - Darya Buehler
- Department of Pathology and Laboratory Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Richard A Anderson
- University of Wisconsin-Madison, School of Medicine and Public Health, Madison, Wisconsin
| | - Paul F Lambert
- McArdle Laboratory for Cancer Research, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin. .,Carbone Cancer Center, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
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The Human Transient Receptor Potential Melastatin 2 Ion Channel Modulates ROS Through Nrf2. Sci Rep 2019; 9:14132. [PMID: 31575956 PMCID: PMC6773863 DOI: 10.1038/s41598-019-50661-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 09/16/2019] [Indexed: 12/20/2022] Open
Abstract
Transient receptor potential melastatin channel subfamily member 2 (TRPM2) has an essential role in protecting cell viability through modulation of oxidative stress. TRPM2 is highly expressed in cancer. When TRPM2 is inhibited, mitochondria are dysfunctional, ROS levels are increased, and cell viability is reduced. Here, the importance of NF-E2-related factor (Nrf2) in TRPM2-mediated suppression of oxidant stress was explored. In TRPM2 depleted cells, antioxidant cofactors glutathione, NADPH, and NADH were significantly reduced. Cytoplasmic and nuclear expression of Nrf2 and of IQGAP1, a modulator of Nrf2 stability regulated by intracellular calcium, were decreased. Antioxidant enzymes transcriptionally regulated by Nrf2 and involved in GSH, NADPH, and NADH generation were significantly lower including PRX1 and PRX3, GPX4, GSTP1, GCLC, and MTHFD2. The glutamine pathway leading to GSH production was suppressed, and ATP and GTP levels were impaired. Reconstitution with wild type TRPM2 or Nrf2, but not TRPM2 pore mutant E960D, rescued expression of enzymes downstream of Nrf2 and restored GSH and GTP. Cell viability, ROS, NADPH, NADH, and ATP levels were fully rescued by TRPM2 and partially by Nrf2. These data show that TRPM2 maintains cell survival following oxidative stress through modulation of antioxidant pathways and cofactors regulated by Nrf2.
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Wu J, Chen Z, Cao H, Yu Z, Feng J, Wang K, Lu Q, Wu Y. High expression of IQGAP3 indicates poor prognosis in colorectal cancer patients. Int J Biol Markers 2019; 34:348-355. [PMID: 31544570 DOI: 10.1177/1724600819876951] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND The oncogene IQ motif-containing GTPase activating protein 3 (IQGAP3) is ubiquitously overexpressed in several human cancers. This study was designed to explore the expression and role of IQGAP3 in colorectal cancer. METHODS We first assessed the IQGAP3 expression level in colorectal cancer. The correlation of IQGAP3 expression with the clinicopathological characteristics and prognosis was then assessed. At last, we investigated the function of IQGAP3 in colorectal cancer by knocking down its expression in colorectal cancer cell lines. RESULTS Consistent with the conclusions drawn from The Cancer Genome Atlas database, IQGAP3 was upregulated in colorectal cancer at the tissue level and cellular level. Based on immunohistochemistry results of the tissue microarrays, we demonstrated that higher expression of IQGAP3 was associated with higher tumor node metastasis stage (P = 0.005), higher incidence of lymph node metastasis (P = 0.004), and shorter overall survival (P = 0.022). Knockdown of IQGAP3 in colorectal cancer cell lines remarkably decreased their proliferation and migration abilities. CONCLUSION Our data provide evidence that IQGAP3 significantly promote malignant progression of colorectal cancer and could serve as a potential therapeutic target.
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Affiliation(s)
- Jian Wu
- Department of General Surgery, The Third Affiliated Hospital of Soochow University, Changzhou, P.R. China.,Department of General Surgery, The second people's Hospital of Jiangyin, Jiangyin, P.R. China
| | - Zhen Chen
- Department of Urology, The Third Affiliated Hospital of Soochow University, Changzhou, P.R. China
| | - Huihua Cao
- Department of General Surgery, The Third Affiliated Hospital of Soochow University, Changzhou, P.R. China
| | - Zhan Yu
- Department of General Surgery, The Third Affiliated Hospital of Soochow University, Changzhou, P.R. China
| | - Jin Feng
- Department of General Surgery, The Third Affiliated Hospital of Soochow University, Changzhou, P.R. China
| | - Kai Wang
- Department of Urology, The Third Affiliated Hospital of Soochow University, Changzhou, P.R. China
| | - Qicheng Lu
- Department of General Surgery, The Third Affiliated Hospital of Soochow University, Changzhou, P.R. China
| | - Yugang Wu
- Department of General Surgery, The Third Affiliated Hospital of Soochow University, Changzhou, P.R. China
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48
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Chellini L, Caprara V, Spadaro F, Sestito R, Bagnato A, Rosanò L. Regulation of extracellular matrix degradation and metastatic spread by IQGAP1 through endothelin-1 receptor signalling in ovarian cancer. Matrix Biol 2019; 81:17-33. [DOI: 10.1016/j.matbio.2018.10.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 10/22/2018] [Accepted: 10/22/2018] [Indexed: 12/25/2022]
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49
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Liu J, Ni X, Li Y, Chen M, Chen W, Wu Y, Chen B, Wu Y, Xu M. Downregulation of IQGAP1 inhibits epithelial-mesenchymal transition via the HIF1α/VEGF-A signaling pathway in gastric cancer. J Cell Biochem 2019; 120:15790-15799. [PMID: 31090961 DOI: 10.1002/jcb.28849] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Revised: 02/07/2019] [Accepted: 02/14/2019] [Indexed: 12/24/2022]
Abstract
As an oncogene, IQ-domain GTPase-activating protein 1 (IQGAP1) regulates the epithelial-mesenchymal transition (EMT) of several cancers, such as breast cancer, thyroid cancer, and esophageal squamous cell carcinoma. However, the role of the scaffold protein IQGAP1 on EMT in gastric cancer remains unclear. Therefore, the present work was performed to address the question. Our results showed that IQGAP1 expression is upregulated in human gastric cancer specimens and cell lines. Furthermore, IQGAP1 knockdown inhibited the migratory ability of gastric cancer cells and reduced the expression of mesenchymal phenotype markers, including Slug, β-catenin, Snail, Vimentin, and N-cadherin, as well as vascular endothelial growth factor-A (VEGF-A) secretion in gastric cancer cells. Conversely, IQGAP1 downregulation increased the epithelial phenotype marker E-cadherin. Furthermore, IQGAP1 silencing not only downregulated hypoxia-inducible transcription factor 1α (HIF1α) but also limited its translocation from the cytosol to the nucleus. Collectively, our results indicated that EMT was regulated by IQGAP1, which was associated with VEGF-A, since other data demonstrated that HIF1α was involved in VEGF-A expression. Therefore, we speculated that IQGAP1 regulated EMT of gastric cancer partially via the HIF1α/VEGF-A signaling pathway. IQGAP1 may serve as an effective therapeutic biomarker for gastric cancer.
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Affiliation(s)
- Junqiang Liu
- Department of Gastroenterology, Affiliated Hospital of Jiangsu University, Jiangsu University, Zhenjiang, China
| | - Xiufan Ni
- Department of Gastroenterology, Affiliated Hospital of Jiangsu University, Jiangsu University, Zhenjiang, China
| | - Yafang Li
- Department of Gastroenterology, Affiliated Hospital of Jiangsu University, Jiangsu University, Zhenjiang, China
| | - Mengjiao Chen
- Department of Gastroenterology, Affiliated Hospital of Jiangsu University, Jiangsu University, Zhenjiang, China
| | - Wei Chen
- Department of Gastroenterology, Affiliated Hospital of Jiangsu University, Jiangsu University, Zhenjiang, China
| | - Ying Wu
- Department of Gastroenterology, Affiliated Hospital of Jiangsu University, Jiangsu University, Zhenjiang, China
| | - Baoding Chen
- Department of Ultrasound, Affiliated Hospital of Jiangsu University, Jiangsu University, Zhenjiang, China
| | - Yan Wu
- Department of Physiology, School of Medicine, Jiangsu University, Zhenjiang, China
| | - Min Xu
- Department of Gastroenterology, Affiliated Hospital of Jiangsu University, Jiangsu University, Zhenjiang, China
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50
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Oue N, Sentani K, Sakamoto N, Uraoka N, Yasui W. Molecular carcinogenesis of gastric cancer: Lauren classification, mucin phenotype expression, and cancer stem cells. Int J Clin Oncol 2019; 24:771-778. [PMID: 30980196 DOI: 10.1007/s10147-019-01443-9] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 04/02/2019] [Indexed: 12/13/2022]
Abstract
Gastric cancer (GC), one of the most common human cancers, is a heterogeneous disease with different phenotypes, prognoses, and responses to treatment. Understanding the pathogenesis of GC at the molecular level is important for prognosis prediction and determining treatments. Microsatellite instability (MSI), silencing of MLH1, MGMT, and CDKN2A genes by DNA hypermethylation, KRAS mutation, APC mutation, and ERBB2 amplification are frequently found in intestinal type GC. Inactivation of CDH1 and RARB by DNA hypermethylation, and amplification of FGFR and MET, are frequently detected in diffuse type GC. In addition, BST2 and PCDHB9 genes are overexpressed in intestinal type GC. Both genes are associated with GC progression. GC can be divided into gastric/intestinal mucin phenotypes according to mucin expression. MSI, alterations of TP73, CDH1 mutation, and DNA methylation of MLH are detected frequently in the gastric mucin phenotype. TP53 mutation, deletion of APC, and DNA methylation of MGMT are detected frequently in the intestinal mucin phenotype. FKTN is overexpressed in the intestinal mucin phenotype, and IQGAP3 is overexpressed in the gastric mucin phenotype. These genes are involved in GC progression. To characterize cancer stem cells, a useful method is spheroid colony formation. KIFC1 and KIF11 genes show more than twofold higher expression in spheroid-forming cells than that in parental cells. Both KIF genes are overexpressed in GC, and knockdown of these genes inhibits spheroid formation. Alterations of these molecules may be useful to understand gastric carcinogenesis. Specific inhibitors of these molecules may also be promising anticancer drugs.
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Affiliation(s)
- Naohide Oue
- Department of Molecular Pathology, Hiroshima University Graduate School of Biomedical and Health Sciences, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan.
| | - Kazuhiro Sentani
- Department of Molecular Pathology, Hiroshima University Graduate School of Biomedical and Health Sciences, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Naoya Sakamoto
- Department of Molecular Pathology, Hiroshima University Graduate School of Biomedical and Health Sciences, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Naohiro Uraoka
- Department of Molecular Pathology, Hiroshima University Graduate School of Biomedical and Health Sciences, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Wataru Yasui
- Department of Molecular Pathology, Hiroshima University Graduate School of Biomedical and Health Sciences, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
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