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Pei Y, Zhang Z, Tan S. Current Opinions on the Relationship Between CMTM Family and Hepatocellular Carcinoma. J Hepatocell Carcinoma 2023; 10:1411-1422. [PMID: 37649636 PMCID: PMC10464892 DOI: 10.2147/jhc.s417202] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Accepted: 08/12/2023] [Indexed: 09/01/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is a typically malignant tumor in the digestive system. The mortality of HCC ranks third place in the world, second only to lung cancer and colorectal cancer. For the characteristics of high invasiveness, high metastasis, high recurrence rate as well as short survival time, HCC treatment has always been difficult in clinical practice. Many causes have contributed to the appearance of these features, including insidious onset, high degree of malignancy, lack of effective early molecular diagnostic markers, and disease prediction models. The human chemokine-like factor superfamily (CMTMs) is a new gene family consisting of CKLF and CMTM1-CMTM8. CMTMs have a marvel domain which can activate and chemotaxis immune cells. Many studies have reported that CMTMs are involved in the regulation of cell growth and development, and play an important role in the malignant progression of the immune system and reproductive system, especially in the development of tumors. In this review, we summarized the structure and function of the human CMTMs, the relationship between its family members and HCC, the prognostic value, potential functions, and mechanisms in HCC. CMTMs could provide a new diagnostic and therapeutic target in clinical practice for patients with HCC.
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Affiliation(s)
- Yulin Pei
- Guangxi Key Laboratory of Environmental Exposomics and Entire Lifecycle Health, Guilin Medical University, Guilin, Guangxi, People’s Republic of China
- Public Health Department of Guilin Medical University, Guilin, Guangxi, People’s Republic of China
| | - Zhengbao Zhang
- Guangxi Key Laboratory of Environmental Exposomics and Entire Lifecycle Health, Guilin Medical University, Guilin, Guangxi, People’s Republic of China
- Public Health Department of Guilin Medical University, Guilin, Guangxi, People’s Republic of China
| | - Shengkui Tan
- Public Health Department of Youjiang Medical University For Nationalities, Baise, GuangxiPeople's Republic of China
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2
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Abstract
BACKGROUND The CKLF-like MARVEL transmembrane domain-containing family (CMTM) is the protein product of at least one splice variant of each gene contained a Marvel (MAL and related proteins for vesicle trafficking and membrane link) domain, involved in a variety of cellular processes and the pathogenesis of diseases, including tumorigenesis. However, the diverse expression patterns and prognostic values of eight CMTMs have yet to be elucidated. OBJECTIVE We analyzed the expressions and impacts on survival of different CMTM factors in BC patients to determine their potential diagnosis and prognosis values in BC. METHODS In the current study, we examined the transcriptional and survival data of CMTMs in patients with breast carcinoma (BC) from ONCOMINE, GEPIA, Kaplan-Meier Plotter, and cBioPortal databases. RESULTS It was found that CMTM5/7 were down-regulated, whereas CMTM1/6 were up-regulated in BC patients compared with the normal tissues. In survival analyses through the Kaplan-Meier plotter database, increased mRNA expressions of CMTM5/6/7 and decreased mRNA expression of CMTM4 were associated with better relapse-free survival (RFS) of BC patients. CONCLUSIONS These data provided CMTM5/7 as new biomarker and prognostic factors in BC.
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Yan M, Zhu X, Qiao H, Zhang H, Xie W, Cai J. Downregulated CMTM8 Correlates with Poor Prognosis in Gastric Cancer Patients. DNA Cell Biol 2021; 40:791-797. [PMID: 33978454 DOI: 10.1089/dna.2021.0110] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
This study aimed to examine the expression and clinical significance of chemokine-like factor-like MARVEL transmembrane domain-containing family member 8 (CMTM8) in gastric cancer (GC). The mRNA and protein expression of CMTM8 were detected by bioinformatics analysis and immunohistochemistry (IHC), respectively. Bioinformatics analysis found that there was a high mRNA expression of CMTM8 in GC tissues, but failed to identify a significant relationship with the clinicopathological features or prognosis of GC patients. However, IHC results showed that the positive expression of CMTM8 protein in GC tissues was significantly lower than that of adjacent nontumor tissues and correlated with differentiation, tumor node metastasis stage, and distal metastasis of GC patients (p < 0.05). Moreover, the survival time of GC patients with negative CMTM8 protein expression group was shorter than that of positive CMTM8 protein expression group by Kaplan-Meier survival analysis (p < 0.05). Cox proportional hazards model (COX) regression analysis indicated that CMTM8 protein was an independent protective factor for the overall survival of GC patients. Further Gene Set Enrichment Analysis suggested that CMTM8 may be involved in regulating the calcium signaling pathway, cell adhesion molecules, and cytokine-cytokine receptor interaction in GC. Our study shows that CMTM8 protein is downregulated in GC tissues, and CMTM8 protein expression is related to GC metastasis and the prognosis of GC patients.
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Affiliation(s)
- Meng Yan
- Department of Surgery, Hebei Medical University, Shijiazhuang, China.,Department of Surgery and Oncology, Hebei General Hospital, Shijiazhuang, China.,Department of General Surgery III, Baoding First Central Hospital, Baoding, China
| | - Xiaonian Zhu
- Department of Epidemiology and Statistics, School of Public Health, Guilin Medical University, Guilin, China
| | - Haizhi Qiao
- Department of Pathology, Baoding First Central Hospital, Baoding, China
| | - Huiqing Zhang
- Department of General Surgery III, Baoding First Central Hospital, Baoding, China
| | - Wenjie Xie
- Department of General Surgery III, Baoding First Central Hospital, Baoding, China
| | - Jianhui Cai
- Department of Surgery, Hebei Medical University, Shijiazhuang, China.,Department of Surgery and Oncology, Hebei General Hospital, Shijiazhuang, China
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Liang Z, Xie J, Huang L, Huang Y, Zhang Y, Ma R, Zheng Z, Wang Q, Li X. Comprehensive analysis of the prognostic value of the chemokine-like factor-like MARVEL transmembrane domain-containing family in gastric cancer. J Gastrointest Oncol 2021; 12:388-406. [PMID: 34012634 DOI: 10.21037/jgo-21-78] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Background The chemokine-like factor (CKLF)-like MARVEL transmembrane domain-containing (CMTM) family refers to a family of transcriptional repressor genes. CMTMs are closely associated with the epigenetic regulatory mechanisms and development of multiple malignancies, including gastric cancer. However, their specific biological functions and prognostic values in gastric cancer have yet to be elucidated. Methods Tumor sample datasets were retrieved and analyzed using databases including Oncomine, STRING, GEPIA2, cBioportal, and Kaplan-Meier plotter. To investigate the prognostic role of CMTMs in gastric cancer, we applied unsupervised hierarchical clustering analysis of CMTM gene expression patterns. Results While the mRNA levels of CMTM1/3/6/7/8 were upregulated in gastric cancer, CMTM2/4/5 showed no statistically significant difference at the mRNA level in patients with gastric cancer. Moreover, the mRNA expressions of different CMTMs exhibited strong correlations with various clinical parameters of patients with gastric cancer, including tumor stage, metastatic lymph node status, H. pylori status, and tumor grade. Also, the results suggested that elevated levels of CMTM3/5 mRNA had a significant association (P<0.05) with poor overall survival, progression-free survival, and post-progression survival. Conversely, elevated expression of CMTM2/4/6 mRNA had a significant association with better overall survival, progression-free survival, and post-progression survival. Unsupervised hierarchical clustering analysis successfully identified 2 major clusters of patients as follows: signature #1: CMTM4/6/8 and signature #2: CMTM1/2/3/5/7. Signature #2 was closely correlated with poorer overall survival, which indicated that the expression pattern of the CMTM family could be a novel prognostic factor for patients with gastric cancer. Conclusions These results suggest that the expression levels of CMTM genes possibly have prognostic value as a biomarker of gastric cancer.
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Affiliation(s)
- Zhikun Liang
- Department of Pharmacy, the Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Jingwen Xie
- Department of Pharmacy, the Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Lihong Huang
- Department of Pharmacy, the Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Yaoyao Huang
- Department of Pharmacy, the Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Yuwen Zhang
- Department of Pharmacy, the Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Ruanxin Ma
- Department of Pharmacy, the Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Zhuoling Zheng
- Department of Pharmacy, the Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Qinbo Wang
- Department of Pharmacy, the Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Xiaoyan Li
- Department of Pharmacy, the Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
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5
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Influence of CMTM8 polymorphisms on lung cancer susceptibility in the Chinese Han population. Pharmacogenet Genomics 2020; 31:89-95. [PMID: 33395025 DOI: 10.1097/fpc.0000000000000426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Lung cancer is the leading cause of cancer-related mortality worldwide and CMTM8 is a potential tumor suppressor gene, which is down-regulated in lung cancer. The objective of this research was to assess the association of CMTM8 genetic polymorphisms with lung cancer risk. METHODS To evaluate the correlation between CMTM8 polymorphisms and lung cancer risk, Agena MassArray platform was used for genotype determination among 509 lung cancer patients and 506 controls. Multiple genetic models, stratification analysis and Haploview analysis were used by calculating odds ratio (OR) and 95% confidence intervals (CIs). RESULTS Significant associations were detected between CMTM8 rs6771238 and an increased lung cancer risk in codominant (adjusted OR = 1.57, 95% CI: 1.01-2.42, P = 0.044) and dominant (adjusted OR = 1.54, 95% CI: 1.01-2.36, P = 0.047) models. After sex stratification analysis, we observed that rs6771238 was related to an increased risk of lung squamous cell carcinoma, while rs6771238 was associated with an increased risk of lung adenocarcinoma. Rs9835916 was linked to increased risk of lymph node metastasis in lung cancer patients. CONCLUSION Our study first reported that CMTM8 polymorphisms were a risk factor for lung cancer, which suggested the potential roles of CMTM8 in the development of lung cancer.
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Li M, Luo F, Tian X, Yin S, Zhou L, Zheng S. Chemokine-Like Factor-Like MARVEL Transmembrane Domain-Containing Family in Hepatocellular Carcinoma: Latest Advances. Front Oncol 2020; 10:595973. [PMID: 33282744 PMCID: PMC7691587 DOI: 10.3389/fonc.2020.595973] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 10/16/2020] [Indexed: 12/21/2022] Open
Abstract
Chemokine-like factor (CKLF)-like MARVEL transmembrane domain-containing family (CMTMs) is a new gene family, consisting of CKLF and CMTM1 to CMTM8, which plays an important role in hematopoiesis system, autoimmune diseases, male reproduction etc. Abnormal expression of CMTMs is also associated with tumor genesis, development and metastasis. In this review, we briefly describe the characteristics of CMTM family, outline its functions in multiple kinds of carcinomas, and summarize the latest research on their roles in hepatocellular carcinoma which are mainly related to the expression, prognostic effect, potential functions, and mechanism of action. The CMTM family is expected to provide new ideas and targets for HCC diagnosis and treatment.
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Affiliation(s)
- Mengxia Li
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,School of Medicine, Zhejiang University, Hangzhou, China.,NHC Key Laboratory of Combined Multi-organ Transplantation, Hangzhou, China.,Key Laboratory of the Diagnosis and Treatment of Organ Transplantation, Research Unit of Collaborative Diagnosis and Treatment For Hepatobiliary and Pancreatic Cancer, Chinese Academy of Medical Sciences (2019RU019), Hangzhou, China.,Key Laboratory of Organ Transplantation, Research Center for Diagnosis and Treatment of Hepatobiliary Diseases, Hangzhou, China
| | - Fangzhou Luo
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,School of Medicine, Zhejiang University, Hangzhou, China.,NHC Key Laboratory of Combined Multi-organ Transplantation, Hangzhou, China.,Key Laboratory of the Diagnosis and Treatment of Organ Transplantation, Research Unit of Collaborative Diagnosis and Treatment For Hepatobiliary and Pancreatic Cancer, Chinese Academy of Medical Sciences (2019RU019), Hangzhou, China.,Key Laboratory of Organ Transplantation, Research Center for Diagnosis and Treatment of Hepatobiliary Diseases, Hangzhou, China
| | - Xinyao Tian
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,School of Medicine, Zhejiang University, Hangzhou, China.,NHC Key Laboratory of Combined Multi-organ Transplantation, Hangzhou, China.,Key Laboratory of the Diagnosis and Treatment of Organ Transplantation, Research Unit of Collaborative Diagnosis and Treatment For Hepatobiliary and Pancreatic Cancer, Chinese Academy of Medical Sciences (2019RU019), Hangzhou, China.,Key Laboratory of Organ Transplantation, Research Center for Diagnosis and Treatment of Hepatobiliary Diseases, Hangzhou, China
| | - Shengyong Yin
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,NHC Key Laboratory of Combined Multi-organ Transplantation, Hangzhou, China.,Key Laboratory of the Diagnosis and Treatment of Organ Transplantation, Research Unit of Collaborative Diagnosis and Treatment For Hepatobiliary and Pancreatic Cancer, Chinese Academy of Medical Sciences (2019RU019), Hangzhou, China.,Key Laboratory of Organ Transplantation, Research Center for Diagnosis and Treatment of Hepatobiliary Diseases, Hangzhou, China
| | - Lin Zhou
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,NHC Key Laboratory of Combined Multi-organ Transplantation, Hangzhou, China.,Key Laboratory of the Diagnosis and Treatment of Organ Transplantation, Research Unit of Collaborative Diagnosis and Treatment For Hepatobiliary and Pancreatic Cancer, Chinese Academy of Medical Sciences (2019RU019), Hangzhou, China.,Key Laboratory of Organ Transplantation, Research Center for Diagnosis and Treatment of Hepatobiliary Diseases, Hangzhou, China
| | - Shusen Zheng
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,NHC Key Laboratory of Combined Multi-organ Transplantation, Hangzhou, China.,Key Laboratory of the Diagnosis and Treatment of Organ Transplantation, Research Unit of Collaborative Diagnosis and Treatment For Hepatobiliary and Pancreatic Cancer, Chinese Academy of Medical Sciences (2019RU019), Hangzhou, China.,Key Laboratory of Organ Transplantation, Research Center for Diagnosis and Treatment of Hepatobiliary Diseases, Hangzhou, China
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H'ng CH, Camp E, Anderson PJ, Zannettino ACW, Gronthos S. CMTM8 Is a Suppressor of Human Mesenchymal Stem Cell Osteogenic Differentiation and Promoter of Proliferation Via EGFR Signaling. Stem Cells Dev 2020; 29:823-834. [PMID: 32268840 DOI: 10.1089/scd.2020.0007] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Multipotent bone marrow-derived mesenchymal stem/stromal cells (BMSCs) exhibit a finite life span after ex vivo expansion leading to cellular senescence. Many factors can contribute to this. Recently, our group has identified for the first time expression of the chemokine-like factor superfamily 8 (CMTM8) gene in cultured human BMSCs. In this study, we examine the role of CMTM8 in BMSC proliferation, migration, and differentiation. Functional studies using siRNA-mediated knockdown of CMTM8 in human BMSCs resulted in decreased capacity to undergo proliferation and migration and an increased capacity for osteogenic differentiation in vitro. Furthermore, reduced CMTM8 levels led to a decrease in the epidermal growth factor receptor (EGFR) signaling pathway during BMSC proliferation and migration, respectively. Supportive studies using retroviral mediated enforced expression of CMTM8 in BMSC resulted in an increased capacity for proliferation and migration but a decreased osteogenic differentiation potential. Collectively, these data suggest that CMTM8 promotes BMSC proliferation and BMSC migration through the EGFR/ERK1/2 pathway. This study provides insight into novel regulatory mechanisms of human BMSC growth and cell fate determination.
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Affiliation(s)
- Chee Ho H'ng
- South Australian Health and Medical Research Institute (SAHMRI), Adelaide, Australia.,Mesenchymal Stem Cell Laboratory, Faculty of Health and Medical Sciences, Adelaide Medical School, University of Adelaide, Australia
| | - Esther Camp
- South Australian Health and Medical Research Institute (SAHMRI), Adelaide, Australia.,Mesenchymal Stem Cell Laboratory, Faculty of Health and Medical Sciences, Adelaide Medical School, University of Adelaide, Australia
| | - Peter J Anderson
- South Australian Health and Medical Research Institute (SAHMRI), Adelaide, Australia.,Mesenchymal Stem Cell Laboratory, Faculty of Health and Medical Sciences, Adelaide Medical School, University of Adelaide, Australia.,Adelaide Craniofacial Unit, Women and Children Hospital, North Adelaide, Australia
| | - Andrew C W Zannettino
- South Australian Health and Medical Research Institute (SAHMRI), Adelaide, Australia.,Myeloma Research Laboratory, Faculty of Health and Medical Sciences, Adelaide Medical School, University of Adelaide, Adelaide, Australia
| | - Stan Gronthos
- South Australian Health and Medical Research Institute (SAHMRI), Adelaide, Australia.,Mesenchymal Stem Cell Laboratory, Faculty of Health and Medical Sciences, Adelaide Medical School, University of Adelaide, Australia
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Wu J, Li L, Wu S, Xu B. CMTM family proteins 1-8: roles in cancer biological processes and potential clinical value. Cancer Biol Med 2020; 17:528-542. [PMID: 32944388 PMCID: PMC7476098 DOI: 10.20892/j.issn.2095-3941.2020.0032] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 06/08/2020] [Indexed: 02/07/2023] Open
Abstract
The CKLF-like MARVEL transmembrane domain containing (CMTM) family of genes comprises CKLF and CMTM1–8 (previously called chemokine-like factor superfamily 1–8, CKLFSF1–8). The CMTM family proteins contain a structurally conserved MAL and related proteins for vesicle trafficking and membrane linking (MARVEL) domain. Dysregulated expression of multiple CMTM family members is a common feature in many human cancer types. CMTM proteins control critical biological processes in cancer development, including growth factor receptor activation and recycling, cell proliferation, apoptosis, metastasis, and immune evasion. Emerging in vivo and in vitro evidence indicates that the mechanisms of action of most CMTM proteins are complex and multifactorial. This review highlights new findings regarding the roles of CMTM1–8 in cancer, particularly in tumor growth, metastasis, and immune evasion. Additionally, the potential clinical value of CMTMs as novel drug targets or biomarkers is discussed.
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Affiliation(s)
- Jie Wu
- Cancer Center, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Lan Li
- Cancer Center, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Siyi Wu
- Cancer Center, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Bin Xu
- Cancer Center, Renmin Hospital of Wuhan University, Wuhan 430060, China
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Wu K, Li X, Gu H, Yang Q, Liu Y, Wang L. Research Advances in CKLF-like MARVEL Transmembrane Domain-containing Family in Non-small Cell Lung Cancer. Int J Biol Sci 2019; 15:2576-2583. [PMID: 31754330 PMCID: PMC6854381 DOI: 10.7150/ijbs.33733] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 08/12/2019] [Indexed: 12/11/2022] Open
Abstract
CKLF-like MARVEL transmembrane domain-containing member (CMTM) is a new gene family first cloned and reported in 2001. The CMTM family consists of nine members including CKLF and CMTM1-CMTM8, which are located on different chromosomes. Besides exhibiting extensive chemotactic activity, the CMTM family plays an important role in the hematopoiesis system, the immune system, the cardiovascular system and the male reproductive system. Recent in-depth research has also revealed that CMTM is closely associated with the genesis, development and metastasis of tumors, displaying opposing activities in diverse human tumors. In this review, we discuss the structural and functional characteristics of the CMTM family and summarize latest research findings of the relationship between several CMTM members and non-small cell lung cancer.
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Affiliation(s)
- Keheng Wu
- China Medical University-The Queen's University of Belfast Joint College, Shenyang, Liaoning, 110122, China
| | - Xiaoman Li
- Institute of Translational Medicine, Key Laboratory of Medical Cell Biology, Ministry of Education, China Medical University, Shenyang, Liaoning, 110122, China
| | - Huadi Gu
- Department of Pathology, College of Basic Medical Sciences, China Medical University, Liaoning, 110122, China
| | - Qiao Yang
- China Medical University-The Queen's University of Belfast Joint College, Shenyang, Liaoning, 110122, China
| | - Yingying Liu
- China Medical University-The Queen's University of Belfast Joint College, Shenyang, Liaoning, 110122, China
| | - Liang Wang
- Department of Pathology, College of Basic Medical Sciences, China Medical University, Liaoning, 110122, China
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Jin Y, Qin X, Jia G. SOX10-dependent CMTM7 expression inhibits cell proliferation and tumor growth in gastric carcinoma. Biochem Biophys Res Commun 2018; 507:91-99. [DOI: 10.1016/j.bbrc.2018.10.172] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 10/28/2018] [Indexed: 12/31/2022]
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11
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Kavitha N, Ein Oon C, Chen Y, Kanwar JR, Sasidharan S. Phaleria macrocarpa (Boerl.) fruit induce G 0/G 1 and G 2/M cell cycle arrest and apoptosis through mitochondria-mediated pathway in MDA-MB-231 human breast cancer cell. JOURNAL OF ETHNOPHARMACOLOGY 2017; 201:42-55. [PMID: 28263848 DOI: 10.1016/j.jep.2017.02.041] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2016] [Revised: 02/22/2017] [Accepted: 02/25/2017] [Indexed: 06/06/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Phaleria macrocarpa (Scheff) Boerl, is a well-known folk medicinal plant in Indonesia. Traditionally, P. macrocarpa has been used to control cancer, impotency, hemorrhoids, diabetes mellitus, allergies, liver and hearth disease, kidney disorders, blood diseases, acne, stroke, migraine, and various skin diseases. AIM OF THE STUDY The purpose of this study was to determine the in situ cytotoxicity effect P. macrocarpa fruit ethyl acetate fraction (PMEAF) and the underlying molecular mechanism of cell death. MATERIALS AND METHODS MDA-MB-231 cells were incubated with PMEAF for 24h. Cell cycle and viability were examined using flow cytometry analysis. Apoptosis was determined using the Annexin V assay and also by fluorescence microscopy. Apoptosis protein profiling was detected by RayBio® Human Apoptosis Array. RESULTS The AO/PI staining and flow cytometric analysis of MDA-MB-231 cells treated with PMEAF were showed apoptotic cell death. The cell cycle analysis by flow cytometry analysis revealed that the accumulation of PMEAF treated MDA-MB-231 cells in G0/G1 and G2/M-phase of the cell cycle. Moreover, the PMEAF exert cytotoxicity by increased the ROS production in MDA-MB-231 cells consistently stimulated the loss of mitochondrial membrane potential (∆Ψm) and induced apoptosis cell death by activation of numerous signalling proteins. The results from apoptosis protein profiling array evidenced that PMEAF stimulated the expression of 9 pro-apoptotic proteins (Bax, Bid, caspase 3, caspase 8, cytochrome c, p21, p27, p53 and SMAC) and suppressed the 4 anti-apoptotic proteins (Bcl-2, Bcl-w, XIAP and survivin) in MDA-MB-231 cells. CONCLUSION The results indicated that PMEAF treatment induced apoptosis in MDA-MB-231 cells through intrinsic mitochondrial related pathway with the participation of pro and anti-apoptotic proteins, caspases, G0/G1 and G2/M-phases cell cycle arrest by p53-mediated mechanism.
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Affiliation(s)
- Nowroji Kavitha
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, USM, 11800 Pulau Pinang, Malaysia
| | - Chern Ein Oon
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, USM, 11800 Pulau Pinang, Malaysia
| | - Yeng Chen
- Dental Research & Training Unit, and Oral Cancer Research and Coordinating Centre (OCRCC), Faculty of Dentistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Jagat R Kanwar
- Nanomedicine-Laboratory of Immunology and Molecular Biomedical Research (LIMBR), School of Medicine (SoM), Faculty of Health, Institute for Frontier Materials (IFM), Deakin University, Waurn Ponds, VIC 3217 Australia
| | - Sreenivasan Sasidharan
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, USM, 11800 Pulau Pinang, Malaysia.
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Zhang W, Qi H, Mo X, Sun Q, Li T, Song Q, Xu K, Hu H, Ma D, Wang Y. CMTM8 is Frequently Downregulated in Multiple Solid Tumors. Appl Immunohistochem Mol Morphol 2017; 25:122-128. [DOI: 10.1097/pai.0000000000000274] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Gao D, Hu H, Wang Y, Yu W, Zhou J, Wang X, Wang W, Zhou C, Xu K. CMTM8 inhibits the carcinogenesis and progression of bladder cancer. Oncol Rep 2016; 34:2853-63. [PMID: 26503336 PMCID: PMC4722886 DOI: 10.3892/or.2015.4310] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Accepted: 08/07/2015] [Indexed: 01/15/2023] Open
Abstract
Bladder cancer is the most common tumor of the urinary tract. The incidence of bladder cancer has increased in the last few decades, thus novel molecular markers for early diagnosis and more efficacious treatment are urgently needed. Chemokine‑like factor (CKLF)‑like MARVEL transmembrane domain containing 8 (CMTM8) is downregulated in several types of cancers and is associated with tumor progression. However, CMTM8 expression has been unexplored in bladder cancer to date. Our results revealed that the expression of CMTM8 was negative in 46 of 74 (62.2%) bladder cancer samples via immunohistochemistry assay. CMTM8 downregulation was associated with advancing tumor stage and tumor grade. CMTM8 was successfully overexpressed by lentivirus in EJ and T24 cells, and the CCK‑8 and Transwell assays showed that CMTM8 overexpression decreased cell proliferation, migration and invasion in vitro. In tumor xenografts upregulation of CMTM8 inhibited tumor growth and lymph node metastasis in vivo. In conclusion, overexpression of CMTM8 in bladder cancer results in reduced malignant cell growth, migration and invasion, which could make it a potential therapeutic target in the treatment of bladder cancer.
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14
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Functional characterization of the tumor suppressor CMTM8 and its association with prognosis in bladder cancer. Tumour Biol 2015; 37:6217-25. [DOI: 10.1007/s13277-015-4508-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Accepted: 11/24/2015] [Indexed: 02/02/2023] Open
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15
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Delic S, Thuy A, Schulze M, Proescholdt MA, Dietrich P, Bosserhoff AK, Riemenschneider MJ. Systematic investigation of CMTM family genes suggests relevance to glioblastoma pathogenesis and CMTM1 and CMTM3 as priority targets. Genes Chromosomes Cancer 2015; 54:433-43. [PMID: 25931111 DOI: 10.1002/gcc.22255] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Accepted: 03/13/2015] [Indexed: 12/13/2022] Open
Abstract
The novel CKLF-like Marvel Transmembrane Domain-containing gene family (CMTM) consists of 8 members (CMTM1-8). As little is known about the oncogenic impact of these genes, we aimed to systematically investigate the relevance of CMTMs to glioblastoma pathogenesis. We performed mRNA expression analyses and survival correlations in glioblastoma patients. Moreover, we analyzed the impact of RNAi-based silencing and overexpression of CMTM family genes on tumor cell proliferation and invasion in vitro. CMTMs appeared to be widely regulated in the group of glioblastomas relative to non-neoplastic brain (NB) tissue (significant upregulation for CMTM2, 3, and 6 and significant downregulation for CMTM 4 and 8). For CMTM1, 5 and 7, we found aberrant expression levels in individual tumors. Functionally, CMTM1, 3, and 7 promoted tumor cell invasion, while CMTM1 additionally enhanced cell proliferation. In a large clinically annotated dataset, higher CMTM1 and 3 expression was significantly correlated with shorter overall survival. Our data thus suggest CMTM1 and 3 as priority targets in glioblastomas. Using a human phosphokinase protein expression profiling assay, we can provide first insights into signalling of these two genes that might be conveyed by growth factor receptor, Src family kinase and WNT activation.
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Affiliation(s)
- Sabit Delic
- Department of Neuropathology, Regensburg University Hospital, Regensburg, Germany
| | - Andreas Thuy
- Department of Neuropathology, Regensburg University Hospital, Regensburg, Germany
| | - Markus Schulze
- Department of Neuropathology, Regensburg University Hospital, Regensburg, Germany
| | - Martin A Proescholdt
- Department of Neurosurgery and, Regensburg University Hospital, Regensburg, Germany.,Wilhelm Sander-NeuroOncology Unit, Regensburg University Hospital, Regensburg, Germany
| | - Peter Dietrich
- Institute of Biochemistry, Emil-FischerCenter, Friedrich-Alexander-University Erlangen-Nuernberg, Erlangen, Germany
| | - Anja-Katrin Bosserhoff
- Institute of Biochemistry, Emil-FischerCenter, Friedrich-Alexander-University Erlangen-Nuernberg, Erlangen, Germany
| | - Markus J Riemenschneider
- Department of Neuropathology, Regensburg University Hospital, Regensburg, Germany.,Wilhelm Sander-NeuroOncology Unit, Regensburg University Hospital, Regensburg, Germany
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16
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Both J, Krijgsman O, Bras J, Schaap GR, Baas F, Ylstra B, Hulsebos TJM. Focal chromosomal copy number aberrations identify CMTM8 and GPR177 as new candidate driver genes in osteosarcoma. PLoS One 2014; 9:e115835. [PMID: 25551557 PMCID: PMC4281204 DOI: 10.1371/journal.pone.0115835] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Accepted: 12/01/2014] [Indexed: 12/04/2022] Open
Abstract
Osteosarcoma is an aggressive bone tumor that preferentially develops in adolescents. The tumor is characterized by an abundance of genomic aberrations, which hampers the identification of the driver genes involved in osteosarcoma tumorigenesis. Our study aims to identify these genes by the investigation of focal copy number aberrations (CNAs, <3 Mb). For this purpose, we subjected 26 primary tumors of osteosarcoma patients to high-resolution single nucleotide polymorphism array analyses and identified 139 somatic focal CNAs. Of these, 72 had at least one gene located within or overlapping the focal CNA, with a total of 94 genes. For 84 of these genes, the expression status in 31 osteosarcoma samples was determined by expression microarray analysis. This enabled us to identify the genes of which the over- or underexpression was in more than 35% of cases in accordance to their copy number status (gain or loss). These candidate genes were subsequently validated in an independent set and furthermore corroborated as driver genes by verifying their role in other tumor types. We identified CMTM8 as a new candidate tumor suppressor gene and GPR177 as a new candidate oncogene in osteosarcoma. In osteosarcoma, CMTM8 has been shown to suppress EGFR signaling. In other tumor types, CMTM8 is known to suppress the activity of the oncogenic protein c-Met and GPR177 is known as an overexpressed upstream regulator of the Wnt-pathway. Further studies are needed to determine whether these proteins also exert the latter functions in osteosarcoma tumorigenesis.
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Affiliation(s)
- Joeri Both
- Department of Genome Analysis, Academic Medical Center, Amsterdam, The Netherlands
| | - Oscar Krijgsman
- Department of Pathology, VU University Medical Center, Amsterdam, the Netherlands
| | - Johannes Bras
- Department of Pathology, Academic Medical Center, Amsterdam, The Netherlands
| | - Gerard R. Schaap
- Department of Orthopedic Surgery, Academic Medical Center, Amsterdam, The Netherlands
| | - Frank Baas
- Department of Genome Analysis, Academic Medical Center, Amsterdam, The Netherlands
| | - Bauke Ylstra
- Department of Pathology, VU University Medical Center, Amsterdam, the Netherlands
| | - Theo J. M. Hulsebos
- Department of Genome Analysis, Academic Medical Center, Amsterdam, The Netherlands
- * E-mail:
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17
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Bai LX, Ding L, Jiang SW, Kang HJ, Gao CF, Chen C, Zhou Q, Wang JT. Down-regulation of FRα Inhibits Proliferation and Promotes Apoptosis of Cervical Cancer Cells in Vitro. Asian Pac J Cancer Prev 2014; 15:5667-72. [DOI: 10.7314/apjcp.2014.15.14.5667] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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18
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Li Z, Xie J, Wu J, Li W, Nie L, Sun X, Tang A, Li X, Liu R, Mei H, Wang F, Wang Z, Gui Y, Cai Z. CMTM3 inhibits human testicular cancer cell growth through inducing cell-cycle arrest and apoptosis. PLoS One 2014; 9:e88965. [PMID: 24586462 PMCID: PMC3938458 DOI: 10.1371/journal.pone.0088965] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Accepted: 01/16/2014] [Indexed: 01/05/2023] Open
Abstract
Human CMTM3 has been proposed as a putative tumor suppressor gene. The loss of CMTM3 has been found in several carcinomas. However, the regulation of CMTM3 expression and its function in tumor progression remain largely unknown. Here, we investigated the regulation of CMTM3 expression, function and molecular mechanism in human testicular cancer cells. CMTM3 was frequently downregulated or silenced in testicular cancer cell lines and tumor tissues but highly expressed in normal testis tissues. The re-expression of CMTM3 significantly suppressed the colony formation, proliferation, and migration capacity of testicular cancer cells by inducing a G2 cell cycle arrest and apoptosis. Moreover, the re-expression of CMTM3 activated the transcription of p53, induced p53 accumulation, up-regulated the expression of p21, and increased the cleavage of caspase 9, 8, 3, and PARP. The downregulation of CMTM3 in clinical tumor tissues was associated with the methylation of a single CpG site located within the Sp1/Sp3-responsive region of the core promoter. These results indicate that CMTM3 can function as tumor suppressor through the induction of a G2 cell cycle arrest and apoptosis. CMTM3 is thus involved in testicular cancer pathogenesis, and it is frequently at least partially silenced by the methylation of a single, specific CpG site in tumor tissues.
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Affiliation(s)
- Zesong Li
- Shenzhen Key Laboratory of Genitourinary Tumor, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen, China
- * E-mail: (ZL); (ZC)
| | - Jun Xie
- Guandong Key Laboratory of Male Reproductive Medicine and Genetics, Peking University Shenzhen Hospital, Shenzhen PKU-HKUST Medical Center, Shenzhen, China
- Department of Clinical Laboratory, Peking University Shenzhen Hospital, Shenzhen, China
| | - Jianting Wu
- Guandong Key Laboratory of Male Reproductive Medicine and Genetics, Peking University Shenzhen Hospital, Shenzhen PKU-HKUST Medical Center, Shenzhen, China
| | - Wenjie Li
- Department of Urology, Suzhou municipal Hospital, Suzhou, Anhui, China
| | - Liping Nie
- Department of Clinical Laboratory, Peking University Shenzhen Hospital, Shenzhen, China
| | - Xiaojuan Sun
- Shenzhen Key Laboratory of Genitourinary Tumor, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Aifa Tang
- Shenzhen Key Laboratory of Genitourinary Tumor, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Xianxin Li
- Department of Clinical Laboratory, Peking University Shenzhen Hospital, Shenzhen, China
| | - Ren Liu
- Shenzhen Key Laboratory of Genitourinary Tumor, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Hongbing Mei
- Shenzhen Key Laboratory of Genitourinary Tumor, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Feng Wang
- Shenzhen Key Laboratory of Genitourinary Tumor, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Zhiping Wang
- Department of Urology, The Second Hospital of Lanzhou University, Lanzhou, China
| | - Yaoting Gui
- Guandong Key Laboratory of Male Reproductive Medicine and Genetics, Peking University Shenzhen Hospital, Shenzhen PKU-HKUST Medical Center, Shenzhen, China
| | - Zhiming Cai
- Shenzhen Key Laboratory of Genitourinary Tumor, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen, China
- * E-mail: (ZL); (ZC)
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A novel 3p22.3 gene CMTM7 represses oncogenic EGFR signaling and inhibits cancer cell growth. Oncogene 2013; 33:3109-18. [PMID: 23893243 DOI: 10.1038/onc.2013.282] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2012] [Revised: 04/11/2013] [Accepted: 04/29/2013] [Indexed: 12/15/2022]
Abstract
Deletion of 3p12-22 is frequent in multiple cancer types, indicating the presence of critical tumor-suppressor genes (TSGs) at this region. We studied a novel candidate TSG, CMTM7, located at the 3p22.3 CMTM-gene cluster, for its tumor-suppressive functions and related mechanisms. The three CMTM genes, CMTM6, 7 and 8, are broadly expressed in human normal adult tissues and normal epithelial cell lines. Only CMTM7 is frequently silenced or downregulated in esophageal and nasopharyngeal cell lines, but uncommon in other carcinoma cell lines. Immunostaining of tissue microarrays for CMTM7 protein showed its downregulation or absence in esophageal, gastric, pancreatic, liver, lung and cervix tumor tissues. Promoter CpG methylation and loss of heterozygosity were both found contributing to CMTM7 downregulation. Ectopic expression of CMTM7 in carcinoma cells inhibits cell proliferation, motility and tumor formation in nude mice, but not in immortalized normal cells, suggesting a tumor inhibitory role of CMTM7. The tumor-suppressive function of CMTM7 is associated with its role in G1/S cell cycle arrest, through upregulating p27 and downregulating cyclin-dependent kinase 2 (CDK2) and 6 (CDK6). Moreover, CMTM7 could promote epidermal growth factor receptor (EGFR) internalization, and further suppress AKT signaling pathway. Thus, our findings suggest that CMTM7 is a novel 3p22 tumor suppressor regulating G1/S transition and EGFR/AKT signaling during tumor pathogenesis.
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Zhang W, Mendoza MC, Pei X, Ilter D, Mahoney SJ, Zhang Y, Ma D, Blenis J, Wang Y. Down-regulation of CMTM8 induces epithelial-to-mesenchymal transition-like changes via c-MET/extracellular signal-regulated kinase (ERK) signaling. J Biol Chem 2012; 287:11850-8. [PMID: 22337876 DOI: 10.1074/jbc.m111.258236] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The acquisition of an invasive phenotype is a critical turning point for malignant tumor cells. CMTM8, a potential tumor suppressor, is frequently down-regulated in solid tumors, and its overexpression induces tumor cell apoptosis. Here, we identify a new role for CMTM8 in regulating tumor cell migration. Reducing CMTM8 expression in HepG2 hepatocellular carcinoma cells results in the acquisition of epithelial-to-mesenchymal transition (EMT) features, including a morphological change from organized epithelial sheets to scattered fibroblast-like shapes, reduction of the epithelial marker E-cadherin, and an increased invasive and migratory ability. These phenotypic changes are mediated in large part by the ERK-MAPK pathway, as the MEK inhibitor U0126 and shRNA-mediated knockdown of ERK2 significantly reversed these phenotypes. Hepatocyte growth factor binding to the c-MET receptor is known to induce EMT in HepG2 cells. We found that CMTM8 knockdown in HepG2 cells induced c-MET signaling and ERK activation. Inhibition of c-MET signaling with the small molecule inhibitor SU11274 or c-MET RNAi blocked the EMT-like changes following CMTM8 knockdown. CMTM8 overexpression in HepG2 cells inhibited hepatocyte growth factor-induced EMT-like morphological changes and cell motility. Down-regulation of CMTM8 also promoted an EMT-like change in MCF-10A cells, indicating a broader role for CMTM8 in regulating cellular transformation.
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Affiliation(s)
- Wenjuan Zhang
- Department of Immunology, School of Basic Medical Sciences, Key Laboratory of Medical Immunology, Ministry of Health, Peking University Health Science Center, Beijing 100191, China
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Cross-disorder analysis of bipolar risk genes: further evidence of DGKH as a risk gene for bipolar disorder, but also unipolar depression and adult ADHD. Neuropsychopharmacology 2011; 36:2076-85. [PMID: 21654738 PMCID: PMC3158324 DOI: 10.1038/npp.2011.98] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Recently, several genome-wide association studies (GWAS) on bipolar disorder (BPD) suggested novel risk genes. However, only few of them were followed up and further, the specificity of these genes is even more elusive. To address these issues, we genotyped SNPs in ANK3, CACNA1C, CMTM8, DGKH, EGFR, and NPAS3, which were significantly associated with BPD in previous GWAS, in a sample of 380 BPD patients. Replicated SNPs were then followed up in patients suffering from unipolar depression (UPD; n=387) or adult attention-deficit/hyperactivity disorder (aADHD; n=535). While we could not confirm an association of ANK3, CACNA1C, and EGFR with BPD, 10 SNPs in DGKH, CMTM8, and NPAS3 were nominally associated with disease, with two DGKH markers surviving correction for multiple testing. When these were followed up in UPD and aADHD, seven DGKH SNPs were also associated with UPD, while one SNP each in NPAS3 and CMTM8 and four in DGKH were linked to aADHD. Furthermore, a DGKH haplotype consisting of rs994856/rs9525580/rs9525584 GAT was associated with all disorders tested, while the complementary AGC haplotype was protective. The corresponding haploblock spans a 27-kb region covering exons coding for amino acids 65-243, and thus might include functional variants yet to be identified. We demonstrate an association of DGKH with BPD, UPD, and aADHD by applying a two-stage design. These disorders share the feature of mood instability, so that this phenotype might be associated with genetic variation in DGKH.
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22
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Niu J, Li H, Zhang Y, Li J, Xie M, Li L, Qin X, Qin Y, Guo X, Jiang Q, Liu Y, Chen S, Huang X, Han W, Ruan G. Aberrant expression of CKLF-like MARVEL transmembrane member 5 (CMTM5) by promoter methylation in myeloid leukemia. Leuk Res 2011; 35:771-6. [DOI: 10.1016/j.leukres.2010.11.023] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2010] [Revised: 11/02/2010] [Accepted: 11/24/2010] [Indexed: 12/11/2022]
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23
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Li H, Guo X, Shao L, Plate M, Mo X, Wang Y, Han W. CMTM5-v1, a four-transmembrane protein, presents a secreted form released via a vesicle-mediated secretory pathway. BMB Rep 2010; 43:182-7. [DOI: 10.5483/bmbrep.2010.43.3.182] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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24
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Recombinant human PDCD5 protein enhances chemosensitivities of hematologic malignancies. ACTA ACUST UNITED AC 2009. [DOI: 10.1007/s11434-009-0635-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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25
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CMTM5-v1 induces apoptosis in cervical carcinoma cells. Biochem Biophys Res Commun 2009; 379:866-71. [DOI: 10.1016/j.bbrc.2008.12.126] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2008] [Accepted: 12/23/2008] [Indexed: 01/08/2023]
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26
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Li D, Jin C, Yin C, Zhang Y, Pang B, Tian L, Han W, Ma D, Wang Y. An alternative splice form of CMTM8 induces apoptosis. Int J Biochem Cell Biol 2007; 39:2107-19. [PMID: 17681841 DOI: 10.1016/j.biocel.2007.06.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2007] [Revised: 05/11/2007] [Accepted: 06/03/2007] [Indexed: 10/23/2022]
Abstract
Previous studies have demonstrated that the chemokine-like factor (CKLF)-like MARVEL transmembrane domain containing 8 (CMTM8) protein accelerates the ligand-induced clearance of epidermal growth factor receptor (EGFR) from the cell surface. The absence of EGFR-mediated signaling induces cells to undergo apoptosis via caspase-dependent and -independent pathways. Here we report the cloning and sequencing of an alternative splice form of CMTM8, obtained from a human blood cDNA library, that utilizes apoptotic pathways distinct from CMTM8. The alternative splice variant arises from a deletion of exon 2 that prevents the expression of a full-length MARVEL domain, and cytosolic YXXPhi motifs. Nevertheless, CMTM8-v2 maintains the ability to induce apoptosis via caspase-dependent and -independent pathways to inhibit cell growth and colony formation. CMTM8 and CMTM8-v2 display different expression profiles and distinct subcellular localization patterns, while operating via different mechanisms to induce apoptosis. CMTM8-v2 did not affect EGFR internalization, implying that the MARVEL domain and/or the cytosolic YXXPhi motifs are necessary for CMTM8 to accelerate ligand-induced EGFR internalization.
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Affiliation(s)
- Dan Li
- Lab of Medical Immunology, School of Basic Medical Science, Peking University Health Science Center, 38# Xueyuan Road, Beijing 100083, PR China
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