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Raza A, Pandey MS, Jin Q, Mulder KM. km23-1/DYNLRB1 regulation of MEK/ERK signaling and R-Ras in invasive human colorectal cancer cells. Cell Biol Int 2020; 44:155-165. [PMID: 31393067 PMCID: PMC7007335 DOI: 10.1002/cbin.11215] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 08/03/2019] [Indexed: 01/25/2023]
Abstract
We previously found that km23-1/DYNLRB1 is required for transforming growth factor-β (TGFβ) production through Ras/ERK pathways in TGFβ-sensitive epithelial cells and in human colorectal cancer (CRC) cells. Here we demonstrate that km23-1/DYNLRB1 is required for mitogen-activated protein kinase kinase (MEK) activation in human CRC cells, detected by km23-1/DYNLRB1-siRNA inhibition of phospho-(p)-MEK immunostaining in RKO cells. Furthermore, we show that CRISPR-Cas9 knock-out (KO) of km23-1/DYNLRB1 reduced cell migration in two additional CRC models, HCT116 and DLD-1. Of interest, in contrast to our previous work showing that dynein motor activity was required for TGFβ-mediated nuclear translocation of Smad2, in the current report, we demonstrate for the first time that disruption of dynein motor activity did not reduce TGFβ-mediated activation of MEK1/2 or c-Jun N-terminal kinase (JNK). Moreover, size exclusion chromatography of RKO cell lysates revealed that B-Raf, extracellular signal-regulated kinase (ERK), and p-ERK were not present in the large molecular weight fractions containing dynein holocomplex components. Furthermore, sucrose gradient fractionation of cell lysates from both HCT116 and CBS CRC cells demonstrated that km23-1/DYNLRB1 co-sedimented with Ras, p-ERK, and ERK in fractions that did not contain components of holo-dynein. Thus, km23-1/DYNLRB1 may be associated with activated Ras/ERK signaling complexes in cell compartments that do not contain the dynein holoprotein complex, suggesting dynein-independent km23-1/DYNLRB1 functions in Ras/ERK signaling. Finally, of the Ras isoforms, R-Ras is most often associated with cell migration, adhesion, and protrusive activity. Here, we show that a significant fraction of km23-1/DYNLRB1 and RRas wase co-localized at the protruding edges of migrating HCT116 cells, suggesting an important role for the km23-1/DYNLRB1-R-Ras complex in CRC invasion.
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Affiliation(s)
| | | | | | - Kathleen M. Mulder
- To whom correspondence should be addressed: Dr. Kathleen M. Mulder, Professor, Department of Biochemistry and Molecular Biology-MC H171, Penn State College of Medicine, 500 University Drive, Hershey, PA 17033, Telephone: 1-717-531-6789; FAX: 1-717-531-0939
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Zhou L, Ye M, Xue F, Lu E, Sun LZ, Zhu X. Effects of dynein light chain Tctex-type 3 on the biological behavior of ovarian cancer. Cancer Manag Res 2019; 11:5925-5938. [PMID: 31308737 PMCID: PMC6612992 DOI: 10.2147/cmar.s205158] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 05/27/2019] [Indexed: 01/20/2023] Open
Abstract
OBJECTIVE To investigate dynein light chain Tctex-type 3 (DYNLT3) protein expression in ovarian epithelial lesions and explore the effects and related mechanisms of DYNLT3 in terms of the biological behavior of ovarian cancer. MATERIALS AND METHODS Initially, expression of the DYNLT3 protein in ovarian epithelial lesions was detected by immunohistochemical staining, and the prognostic value of DYNLT3 mRNA expression in ovarian cancer patients was assessed using the Kaplan-Meier plotter database. Then, the mRNA and protein expression of DYNLT3 in IOSE80 normal ovarian epithelial cells and SKOV3 ovarian cancer cells was evaluated by quantitative real-time polymerase chain reaction and Western blotting respectively, and the proliferation, apoptosis, migration and invasion of SKOV3 cells after DYNLT3 over-expression and under-expression were investigated by CCK-8 assays and immunofluorescence staining, flow cytometry, wound healing assays and Transwell invasion assays, respectively. Furthermore, the expression of the proliferation-related proteins PCNA and Ki-67 and the invasion- and migration-related proteins Ezrin, Fascin, MMP2 and MMP9 in cells was examined by Western blotting. RESULTS The protein expression of DYNLT3 gradually increased during the progression of ovarian epithelial lesions, and was related to the development of ovarian cancer. High expression of DYNLT3 mRNA was related to poor overall survival and progression free survival, especially in serous ovarian cancer patients. In addition, overexpression of DYNLT3 promoted SKOV3 cell proliferation, invasion and migration. The corresponding results were also verified by a DYNLT3 knockdown assay. Moreover, DYNLT3 increased cell proliferation, which was related to Ki-67 expression. Besides, DYNLT3 enhanced cell invasion and migration through regulating Ezrin, but not Fascin, MMP2 or MMP9. CONCLUSION DYNLT3 exerts pro-tumoral effects on ovarian cancer through promoting cell proliferation, migration and invasion, possibly via regulating the protein expression of Ki-67 and Ezrin. DYNLT3 may be a potential prognostic predictor in ovarian cancer.
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Affiliation(s)
- Lulu Zhou
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou325027, People’s Republic of China
| | - Miaomiao Ye
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou325027, People’s Republic of China
| | - Fang Xue
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou325027, People’s Republic of China
| | - Ermei Lu
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou325027, People’s Republic of China
| | - Lu-Zhe Sun
- Departments of Cell Systems & Anatomy, School of Medicine, University of Texas Health Science Center, San Antonio, TX, USA
| | - Xueqiong Zhu
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou325027, People’s Republic of China
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Yang R, Liu X, Thakolwiboon S, Zhu J, Pei X, An M, Tan Z, Lubman DM. Protein Markers Associated with an ALDH Sub-Population in Colorectal Cancer. JOURNAL OF PROTEOMICS & BIOINFORMATICS 2016; 9:238-247. [PMID: 28503055 PMCID: PMC5423664 DOI: 10.4172/jpb.1000412] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
ALDH has been shown to be a marker that denotes a sub-population of cancer stem cells in colorectal and other cancers. This sub-population of cells shows an increased risk for tumor initiation, metastasis, and resistance to chemotherapy and radiation resulting in recurrence and death. It is thus essential to identify the important signaling pathways related to ALDH1+ CSCs in colon cancer. The essential issue becomes to isolate pure sub-populations of cells from heterogeneous tissues for further analysis. To achieve this goal, tissues from colorectal cancer Stage III patients were immuno-stained with ALDH1 antibody. Target ALDH1+ and ALDH1- cells from the same tissue were micro-dissected using Laser Capture Microdissection (LCM). Captured cells were lysed and analyzed using LC-MS/MS where around 20,000 cells were available for analysis. This analysis resulted in 134 proteins which were differentially expressed between ALDH1+ and ALDH1- cells in three patient sample pairs. Based on these differentially expressed proteins an IPA pathway analysis was performed that showed two key pathways in cell to cell signaling and organismal injury and abnormalities. The IPA analysis revealed β-catenin, NFκB (p65) and TGFβ1 as important cancer-related proteins in these pathways. A TMA validation using immunofluorescence staining of tissue micro-arrays including 170 cases was used to verify that these key proteins were highly overexpressed in ALDH1+ cells in colon cancer tissues compared to ALDH1- cells.
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Affiliation(s)
- Rui Yang
- Department of Surgery, University of Michigan Medical Center, Ann Arbor, Michigan 48109, USA
| | - Xinhua Liu
- Department of Surgery, University of Michigan Medical Center, Ann Arbor, Michigan 48109, USA
- Experimental Center for Science and Technology, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Smathorn Thakolwiboon
- Department of Surgery, University of Michigan Medical Center, Ann Arbor, Michigan 48109, USA
- Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Jianhui Zhu
- Department of Surgery, University of Michigan Medical Center, Ann Arbor, Michigan 48109, USA
| | - Xiucong Pei
- Department of Surgery, University of Michigan Medical Center, Ann Arbor, Michigan 48109, USA
- Department of Toxicology, School of Public Health, Shenyang Medical College, Liaoning 110034, China
| | - Mingrui An
- Department of Surgery, University of Michigan Medical Center, Ann Arbor, Michigan 48109, USA
| | - Zhijing Tan
- Department of Surgery, University of Michigan Medical Center, Ann Arbor, Michigan 48109, USA
| | - David M Lubman
- Department of Surgery, University of Michigan Medical Center, Ann Arbor, Michigan 48109, USA
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Méplan C, Johnson IT, Polley ACJ, Cockell S, Bradburn DM, Commane DM, Arasaradnam RP, Mulholland F, Zupanic A, Mathers JC, Hesketh J. Transcriptomics and proteomics show that selenium affects inflammation, cytoskeleton, and cancer pathways in human rectal biopsies. FASEB J 2016; 30:2812-25. [PMID: 27103578 DOI: 10.1096/fj.201600251r] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Accepted: 04/12/2016] [Indexed: 01/11/2023]
Abstract
Epidemiologic studies highlight the potential role of dietary selenium (Se) in colorectal cancer prevention. Our goal was to elucidate whether expression of factors crucial for colorectal homoeostasis is affected by physiologic differences in Se status. Using transcriptomics and proteomics followed by pathway analysis, we identified pathways affected by Se status in rectal biopsies from 22 healthy adults, including 11 controls with optimal status (mean plasma Se = 1.43 μM) and 11 subjects with suboptimal status (mean plasma Se = 0.86 μM). We observed that 254 genes and 26 proteins implicated in cancer (80%), immune function and inflammatory response (40%), cell growth and proliferation (70%), cellular movement, and cell death (50%) were differentially expressed between the 2 groups. Expression of 69 genes, including selenoproteins W1 and K, which are genes involved in cytoskeleton remodelling and transcription factor NFκB signaling, correlated significantly with Se status. Integrating proteomics and transcriptomics datasets revealed reduced inflammatory and immune responses and cytoskeleton remodelling in the suboptimal Se status group. This is the first study combining omics technologies to describe the impact of differences in Se status on colorectal expression patterns, revealing that suboptimal Se status could alter inflammatory signaling and cytoskeleton in human rectal mucosa and so influence cancer risk.-Méplan, C., Johnson, I. T., Polley, A. C. J., Cockell, S., Bradburn, D. M., Commane, D. M., Arasaradnam, R. P., Mulholland, F., Zupanic, A., Mathers, J. C., Hesketh, J. Transcriptomics and proteomics show that selenium affects inflammation, cytoskeleton, and cancer pathways in human rectal biopsies.
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Affiliation(s)
- Catherine Méplan
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle-upon-Tyne, United Kingdom; School of Biomedical Sciences, Newcastle University, Newcastle-upon-Tyne, United Kingdom; Human Nutrition Research Centre, Newcastle University, Newcastle-upon-Tyne, United Kingdom; The Medical School, Newcastle University, Newcastle-upon-Tyne, United Kingdom;
| | - Ian T Johnson
- Institute of Food Research, Norwich Research Park, Norwich, United Kingdom
| | - Abigael C J Polley
- Institute of Food Research, Norwich Research Park, Norwich, United Kingdom
| | - Simon Cockell
- Bioinformatics Support Unit, Newcastle University, Newcastle-upon-Tyne, United Kingdom
| | | | - Daniel M Commane
- Human Nutrition Research Centre, Newcastle University, Newcastle-upon-Tyne, United Kingdom
| | - Ramesh P Arasaradnam
- School of Biomedical Sciences, Newcastle University, Newcastle-upon-Tyne, United Kingdom; Wansbeck General Hospital, Ashingon, United Kingdom; and **Institute of Cellular Medicine, Newcastle University, Newcastle-upon-Tyne, United Kingdom
| | - Francis Mulholland
- Institute of Food Research, Norwich Research Park, Norwich, United Kingdom
| | - Anze Zupanic
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle-upon-Tyne, United Kingdom
| | - John C Mathers
- Human Nutrition Research Centre, Newcastle University, Newcastle-upon-Tyne, United Kingdom; **Institute of Cellular Medicine, Newcastle University, Newcastle-upon-Tyne, United Kingdom
| | - John Hesketh
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle-upon-Tyne, United Kingdom; Human Nutrition Research Centre, Newcastle University, Newcastle-upon-Tyne, United Kingdom; The Medical School, Newcastle University, Newcastle-upon-Tyne, United Kingdom
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Sui Y, Sun M, Wu F, Yang L, Di W, Zhang G, Zhong L, Ma Z, Zheng J, Fang X, Ma T. Inhibition of TMEM16A expression suppresses growth and invasion in human colorectal cancer cells. PLoS One 2014; 9:e115443. [PMID: 25541940 PMCID: PMC4277312 DOI: 10.1371/journal.pone.0115443] [Citation(s) in RCA: 98] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Accepted: 11/23/2014] [Indexed: 12/12/2022] Open
Abstract
Metastasis leads to poor prognosis in colorectal cancer patients, and there is a growing need for new therapeutic targets. TMEM16A (ANO1, DOG1 or TAOS2) has recently been identified as a calcium-activated chloride channel (CaCC) and is reported to be overexpressed in several malignancies; however, its expression and function in colorectal cancer (CRC) remains unclear. In this study, we found expression of TMEM16A mRNA and protein in high-metastatic-potential SW620, HCT116 and LS174T cells, but not in primary HCT8 and SW480 cells, using RT-PCR, western blotting and immunofluorescence labeling. Patch-clamp recordings detected CaCC currents regulated by intracellular Ca(2+) and voltage in SW620 cells. Knockdown of TMEM16A by short hairpin RNAs (shRNA) resulted in the suppression of growth, migration and invasion of SW620 cells as detected by MTT, wound-healing and transwell assays. Mechanistically, TMEM16A depletion was accompanied by the dysregulation of phospho-MEK, phospho-ERK1/2 and cyclin D1 expression. Flow cytometry analysis showed that SW620 cells were inhibited from the G1 to S phase of the cell cycle in the TMEM16A shRNA group compared with the control group. In conclusion, our results indicate that TMEM16A CaCC is involved in growth, migration and invasion of metastatic CRC cells and provide evidence for TMEM16A as a potential drug target for treating metastatic colorectal carcinoma.
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Affiliation(s)
- Yujie Sui
- Key Laboratory for Molecular and Chemical Genetics of Critical Human Diseases of Jilin Province, Jilin University Bethune Second Hospital, Changchun, P. R. China
| | - Meiyan Sun
- Key Laboratory for Molecular and Chemical Genetics of Critical Human Diseases of Jilin Province, Jilin University Bethune Second Hospital, Changchun, P. R. China
| | - Fei Wu
- Department of Gynecology and Obstetrics, Jilin University Bethune Second Hospital, Changchun, P. R. China
| | - Longfei Yang
- Key Laboratory for Molecular and Chemical Genetics of Critical Human Diseases of Jilin Province, Jilin University Bethune Second Hospital, Changchun, P. R. China
| | - Weihua Di
- Key Laboratory for Molecular and Chemical Genetics of Critical Human Diseases of Jilin Province, Jilin University Bethune Second Hospital, Changchun, P. R. China
| | - Guizhen Zhang
- Key Laboratory for Molecular and Chemical Genetics of Critical Human Diseases of Jilin Province, Jilin University Bethune Second Hospital, Changchun, P. R. China
| | - Lili Zhong
- Key Laboratory for Molecular and Chemical Genetics of Critical Human Diseases of Jilin Province, Jilin University Bethune Second Hospital, Changchun, P. R. China
| | - Zhiming Ma
- Department of General Surgery, Jilin University Bethune Second Hospital, Changchun, P. R. China
| | - Jinhao Zheng
- Department of General Surgery, Jilin University Bethune Second Hospital, Changchun, P. R. China
| | - Xuedong Fang
- Department of General Surgery, Jilin University Bethune Second Hospital, Changchun, P. R. China
- Department of General Surgery, China-Japan Friendship Hospital of Jilin University, Changchun, P. R. China
- * E-mail: (XDF); (THM)
| | - Tonghui Ma
- Key Laboratory for Molecular and Chemical Genetics of Critical Human Diseases of Jilin Province, Jilin University Bethune Second Hospital, Changchun, P. R. China
- College of Basic Medical Sciences, Dalian Medical University, Dalian, P. R. China
- * E-mail: (XDF); (THM)
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Erlotinib derivative inhibits hepatocellular carcinoma by targeting CIP2A to reactivate protein phosphatase 2A. Cell Death Dis 2014; 5:e1359. [PMID: 25077545 PMCID: PMC4123111 DOI: 10.1038/cddis.2014.325] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Revised: 06/27/2014] [Accepted: 07/01/2014] [Indexed: 12/23/2022]
Abstract
Protein phosphatase 2A (PP2A) is a tumor suppressor, which is functionally defective in various cancers. Previously, we found that PP2A activity determined the anticancer effect of bortezomib and erlotinib in hepatocellular carcinoma (HCC) cells. Here, we tested a novel erlotinib derivative, TD52, in four HCC cell lines, PLC5, Huh-7, Hep3B and Sk-Hep1. Using MTT and flow cytometry, we showed that TD52 had more potent apoptotic effects than erlotinib in HCC cells. TD52-induced apoptosis was associated with dose- and time- dependent reactivation of PP2A and downregulation of cancerous inhibitor of protein phosphatase 2A (CIP2A) and p-Akt. Inhibition of PP2A or ectopic expression of CIP2A or Akt in PLC5 cells abolished the effects of TD52. Furthermore, we demonstrated that TD52 affected the binding of Elk-1 to the proximal promoter of the CIP2A gene, thus downregulating transcription of CIP2A. Importantly, TD52-induced tumor inhibition was associated with reactivation of PP2A and downregulation of CIP2A and p-Akt in vivo. In conclusion, we found that enhancement of PP2A activity by inhibition of CIP2A determines the apoptotic effect induced by TD52. Our findings disclose the therapeutic mechanism of this novel targeted agent, and suggest the therapeutic potential and feasibility of developing PP2A enhancers as a novel anticancer strategy.
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