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Jiao R, Sun S, Gao X, Cui R, Cao G, Wei H, Wang S, Zhang Z, Bai H. A Polyethylene Glycol-Based Method for Enrichment of Extracellular Vesicles from Culture Supernatant of Human Ovarian Cancer Cell Line A2780 and Body Fluids of High-Grade Serous Carcinoma Patients. Cancer Manag Res 2020; 12:6291-6301. [PMID: 32801874 PMCID: PMC7386806 DOI: 10.2147/cmar.s228288] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 07/03/2020] [Indexed: 12/21/2022] Open
Abstract
Objective This study tried to evaluate whether 8% polyethylene glycol (PEG) 6000 precipitation combined with differential ultracentrifugation (PPDU) was an efficient and practical method for the enrichment and purification of extracellular vesicles (EVs) derived from the culture supernatant of human ovarian cancer cell line A2780 and from body fluids of patients with high-grade serous carcinoma (HGSC). Methods PPDU was used to enrich and purify the EVs derived from body fluids of patients with HSGC and cell culture supernatant of subclones of human ovarian cancer cell line A2780 with high/low invasive capacity (named as A-H/A-L, respectively). Transmission electron microscope (TEM) and nanoparticle tracking analysis (NTA) were used to identificate the EVs size and distribution. Western blots (WB) were used to detect the expression of CD9, CD63, Alix and Calnexin. The high-purity EVs derived from the cell culture supernatant of A-H/A-L were detected by the protein profile. Expression of integrins (ITGs) αV, β1 and β3 in the EVs derived from body fluids of HGSC patients was also evaluated. Results The diameter of EVs was about 30–260 nm observed under the TEM. Under the NTA identification, the peak size of EVs was ranged from 70 to 159nm. EVs derived from different specimens did not significantly differ in mean size and peak size. Presence of CD9, CD63 and Alix and absence of Calnexin were confirmed in the EVs. The protein concentrations of EVs’ sample extracted from A-H/A-L cell culture supernatant were 0.36µg/µL and 0.20µg/µL, respectively. The total amount of protein obtained from 300ul EVs was 108.02ug and 61.44ug, respectively. Totally, 2397 peptides and 952 proteins were identified by isobaric tags for relative and absolute quantitation (ITRAQ). The expression of ITGαV, β1, and β3 in the EVs from plasma and ascites of HGSC patients was significantly higher than the control group (plasma: all P<0.0001; ascites: P=0.036, 0.001 and 0.004, respectively). The expression level of ITGαV and β1 in EVs of HGSC’s ascites was significantly higher than that in plasma (P= 0.004, 0.001, respectively). The expression of ITGβ3 was also slightly elevated in EVs-derived HGSC patients’ ascites (P=0.492). Conclusion PPDU was an efficient and practical method to enrich EVs from body fluids and cell culture supernatant. The characteristic expression of ITGαV, β1 and β3 in ascites and plasma EVs of patients with HGSC provided useful information on the development of EVs in HGSC.
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Affiliation(s)
- Ruili Jiao
- Department of Obstetrics and Gynecology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, People's Republic of China.,Department of Obstetrics and Gynecology, Maternal and Child Health Hospital, Beijing, People's Republic of China
| | - Shipeng Sun
- Clinical Laboratories, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, People's Republic of China
| | - Xiaoqiong Gao
- Department of Obstetrics and Gynecology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, People's Republic of China
| | - Ran Cui
- Department of Obstetrics and Gynecology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, People's Republic of China
| | - Guangming Cao
- Department of Obstetrics and Gynecology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, People's Republic of China
| | - Huali Wei
- Department of Obstetrics and Gynecology, Emergency General Hospital, Beijing, People's Republic of China
| | - Shuzhen Wang
- Department of Obstetrics and Gynecology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, People's Republic of China
| | - Zhenyu Zhang
- Department of Obstetrics and Gynecology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, People's Republic of China
| | - Huimin Bai
- Department of Obstetrics and Gynecology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, People's Republic of China
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2
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Wu A, Zhang S, Liu J, Huang Y, Deng W, Shu G, Yin G. Integrated Analysis of Prognostic and Immune Associated Integrin Family in Ovarian Cancer. Front Genet 2020; 11:705. [PMID: 32765584 PMCID: PMC7379341 DOI: 10.3389/fgene.2020.00705] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 06/10/2020] [Indexed: 12/22/2022] Open
Abstract
Human integrin receptors are important for cell-cell and cell-matrix adhesion in normal epithelial cells. Emerging evidences have indicated integrin members are involved in cancer development and progression as well. However, the expression patterns and clinical significance of the whole integrin family in ovarian cancer (OC) have not yet been well understood. In the present study, we utilized the public datasets including GEPIA, GEO, ONCOMINE, cBioPortal, Kaplan-Meier Plotter, TIMER databases, to analyze the expression and prognostic value of integrin members in OC. We found ITGA3/B4/B6/B7/B8 were abnormally overexpressed in OC; ITGA6 was good prognosis predictor in OC; ITGA3/ B4/B8 were poor prognosis predictor specially in advanced OC patients; elevated ITGA3/B4 might promote metastasis and elevated ITGA3/B8 might promote platinum resistance of OC; ITGA3 and ITGB4 might synergistically or independently regulate cell adhesion and proliferation; ITGA4/AL/AM/AX/B2/B7 showed strong correlations with various tumor immune infiltrates (TILs), especially with pro-tumor immunes cell types like monocyte, M2 macrophage and exhaustion T cells infiltration; ITGAL/AM/B2/B7 and residing memory CD8+ T cells marker ITGAE were specially associated with early OC patients outcome. Our results implied that ITGA3/B4 were important prognostic markers of advanced OC, ITGAL/AM/ B2/B7 were immune associated prognosis markers of early OC, together they might render important therapeutic targets for OC.
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Affiliation(s)
- Anqi Wu
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China
| | - Sai Zhang
- Deparment of Pathology, School of Basic Medicine Sciences, Central South University, Changsha, China
| | - Jiaqi Liu
- Deparment of Pathology, School of Basic Medicine Sciences, Central South University, Changsha, China
| | - Yifeng Huang
- Department of Anesthesia, School of Medicine, Central South University, Changsha, China
| | - Wenyu Deng
- Departmemt of Nursing, School of Nursing, Central South University, Changsha, China
| | - Guang Shu
- Deparment of Pathology, School of Basic Medicine Sciences, Central South University, Changsha, China
| | - Gang Yin
- Department of Pathology, Xiangya Hospital, Central South University, Changsha, China.,Deparment of Pathology, School of Basic Medicine Sciences, Central South University, Changsha, China
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Cui R, Cao G, Bai H, Zhang Z. LPAR1 regulates the development of intratumoral heterogeneity in ovarian serous cystadenocarcinoma by activating the PI3K/AKT signaling pathway. Cancer Cell Int 2019; 19:201. [PMID: 31384176 PMCID: PMC6664705 DOI: 10.1186/s12935-019-0920-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Accepted: 07/22/2019] [Indexed: 02/08/2023] Open
Abstract
Background To explore the role of lysophosphatidic acid receptor 1 (LPAR1) and its correlation with the PI3K/AKT pathway in the development of intratumoral heterogeneity (ITH) in human ovarian serous cystadenocarcinoma (OSC). Methods Immunohistochemical staining was performed to detect LPAR1 expression in matched primary and recurrent lesions from the same patients. Cell models of ITH were established using the limiting dilution methodology and Transwell invasion/migration assays. LPAR1 expression in the ITH cell models was silenced or upregulated with lentiviral particles, and the biological characteristics were evaluated using various in vitro and in vivo assessments of cell function. The levels of phosphorylated PI3K/AKT (p-PI3K/p-AKT) in LPAR1 knockdown and LPAR1-overexpressing cells were detected. Results The H-scores for LPAR1 staining in the lymphatic metastatic and recurrent lesions were noticeably higher than in the primary tumor lesions from the same patients (P = 0.024/0.031). High LPAR1 expression was associated with worse progression-free survival and overall survival (P = 0.017/0.039). Biological functions in vitro, including invasion, migration, and proliferation, and tumor formation in vivo were decreased in the LPAR1-silenced cells (all P < 0.05). These cellular functions were significantly increased in the LPAR1-overexpressing cells in vitro and in vivo (all P < 0.05). The levels of p-PI3K and p-AKT were significantly decreased in the LPAR1 knockdown cells and significantly increased in the LPAR1-overexpressing cells (all P < 0.05). Conclusions Higher levels of the LPAR1 protein were associated with a poor prognosis. LPAR1 plays essential roles in the invasion, migration, and proliferation of heterogeneous subsets of OSC cell lines and the development of ITH of OSC, possibly by modulating the activity of the PI3K/AKT signaling pathway.
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Affiliation(s)
- Ran Cui
- Department of Obstetrics and Gynecology, Beijing Chao-Yang Hospital, Capital Medical University, No.8, North Road of Workers Stadium, Chaoyang District, Beijing, 100020 China
| | - Guangming Cao
- Department of Obstetrics and Gynecology, Beijing Chao-Yang Hospital, Capital Medical University, No.8, North Road of Workers Stadium, Chaoyang District, Beijing, 100020 China
| | - Huimin Bai
- Department of Obstetrics and Gynecology, Beijing Chao-Yang Hospital, Capital Medical University, No.8, North Road of Workers Stadium, Chaoyang District, Beijing, 100020 China
| | - Zhenyu Zhang
- Department of Obstetrics and Gynecology, Beijing Chao-Yang Hospital, Capital Medical University, No.8, North Road of Workers Stadium, Chaoyang District, Beijing, 100020 China
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4
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Yin X, Fang S, Wang M, Wang Q, Fang R, Chen J. EFEMP1 promotes ovarian cancer cell growth, invasion and metastasis via activated the AKT pathway. Oncotarget 2018; 7:47938-47953. [PMID: 27351229 PMCID: PMC5216990 DOI: 10.18632/oncotarget.10296] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 06/09/2016] [Indexed: 11/25/2022] Open
Abstract
EFEMP1, a kind of extracellular matrix (ECM) protein, has been suggested to correlate with the development of different types of carcinoma. However, its functions in ovarian cancer remain unclear. In our study, we performed cDNA microarray analysis and identified EFEMP1 dramatically elevated in the highly invasive subclone, compared with the low invasive subclone. Lentivirus transfection experiments were constructed afterwards. The results demonstrated that knockdown of EFEMP1 significantly inhibited ovarian cancer cell proliferation and induced cell cycle arrest at the G1/G0 phase. We also found that decreased the activity of phospho-AKT could suppress cell invasion and metastasis. Meanwhile, the increased phospho-AKT activity induced by the overexpression of EFEMP1 had significantly enhanced the abilities of ovarian cancer cells to invade and migrate. In addition, the vivo nude mice model confirmed that EFEMP1 was tightly correlated with the development of tumor. The results of RT2 Profiler EMT PCR array further indicated that decreased EFEMP1 suppressed epithelial-to-mesenchymal transition (EMT). Collectively, by activating AKT signaling pathway, EFEMP1 contributed to ovarian cancer invasion and metastasis as a positive regulator. Overall, EFEMP1 had showed the potential use in the development of new therapeutic strategies for ovarian cancer.
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Affiliation(s)
- Xiuxiu Yin
- Department of Maternal and Child Health, School of Public Health, Shandong University, Jinan, 250012, China.,The No.1 People's Hospital of Jining, Jining 272000, China
| | - Shuang Fang
- Biochemistry and Molecular Biology, Georgetown University, Georgetown, Washington D.C, 20057, USA
| | - Mei Wang
- Pharmacy Department, Shandong Provincial Hospital affiliated to Shandong University, Jinan, 250012, China
| | - Qiang Wang
- Department of Obstetrics and Gynecology, the Second Hospital affiliated to Jilin University, Jilin, 130000, China
| | - Rui Fang
- Clinical Medicine, School of Medicine, Shandong University, Jinan 250012, China
| | - Jie Chen
- Department of Maternal and Child Health, School of Public Health, Shandong University, Jinan, 250012, China
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5
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Bruney L, Liu Y, Grisoli A, Ravosa MJ, Stack MS. Integrin-linked kinase activity modulates the pro-metastatic behavior of ovarian cancer cells. Oncotarget 2017; 7:21968-81. [PMID: 26959113 PMCID: PMC5008337 DOI: 10.18632/oncotarget.7880] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Accepted: 02/20/2016] [Indexed: 11/25/2022] Open
Abstract
Epithelial ovarian cancer (EOC) is the most fatal gynecologic cancer in the U.S., resulting in >14,000 deaths/year. Most women are diagnosed at late stage with widely disseminated intra-peritoneal metastatic disease, resulting in a 5-year survival rate of <30%. EOCs spread via direct extension and exfoliation into the peritoneal cavity, adhesion to peritoneal mesothelial cells, mesothelial cell retraction to expose sub-mseothelial matrix and anchoring in the type I collagen-rich matrix to generate secondary lesions. As a molecular-level understanding of EOC metastasis may identify novel therapeutic targets, the current study evaluated the expression and activity of integrin-linked kinase (ILK), a Ser/Thr protein kinase activated upon integrin-mediated adhesion. Results show that ILK is co-expressed in EOC with the pro-metastatic enzyme membrane type 1 matrix metalloproteinase (MT1-MMP) and catalyzed phosphorylation of the cytoplasmic tail of the proteinase. Downregulation of ILK expression or activity reduced adhesion to and invasion of collagen gels and organotypic meso-mimetic cultures. As an initial early event in EOC metastasis is integrin-mediated adhesion, these results suggest that further evaluation of ILK inhibitors as anti-metastatic agents in EOC is warranted.
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Affiliation(s)
- Lana Bruney
- Department of Medical Physiology & Pharmacology, University of Missouri School of Medicine, Columbia, MO, USA.,Harper Cancer Research Institute, University of Notre Dame, South Bend, IN, USA
| | - Yueying Liu
- Harper Cancer Research Institute, University of Notre Dame, South Bend, IN, USA.,Departments of Chemistry & Biochemistry and University of Notre Dame, Notre Dame, IN, USA
| | - Anne Grisoli
- Harper Cancer Research Institute, University of Notre Dame, South Bend, IN, USA
| | - Matthew J Ravosa
- Biological Sciences, University of Notre Dame, Notre Dame, IN, USA
| | - M Sharon Stack
- Department of Medical Physiology & Pharmacology, University of Missouri School of Medicine, Columbia, MO, USA.,Harper Cancer Research Institute, University of Notre Dame, South Bend, IN, USA.,Departments of Chemistry & Biochemistry and University of Notre Dame, Notre Dame, IN, USA
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6
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Guo B, Yan H, Li L, Yin K, Ji F, Zhang S. Collagen triple helix repeat containing 1 (CTHRC1) activates Integrin β3/FAK signaling and promotes metastasis in ovarian cancer. J Ovarian Res 2017; 10:69. [PMID: 29021002 PMCID: PMC5637322 DOI: 10.1186/s13048-017-0358-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Accepted: 09/05/2017] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Metastasis is the major cause of morbidity and mortality in patients with epithelial ovarian cancer (EOC), however the mechanisms that underline this process are poorly understood. Collagen triple helix repeat containing-1 (CTHRC1) is a 28-kDa secreted protein reported to be involved in vascular remodeling, bone formation and morphogenesis. This study aimed to investigate the role of CTHRC1 in promoting the metastasis of EOC and to elucidate the underlying molecular mechanisms. METHODS The biologic functions of CTHRC1 in metastasis were validated both in vivo and in vitro experiments. The phosphor-antibody microarray analysis and Co-immunoprecipitation were performed to detect and identify the integrin β3/FAK signaling pathway that mediated the function of CTHRC1. Seventy two EOC samples were analyzed for association between CTHRC1/integrin β3 expression and patient clinicopathological features. RESULTS We demonstrated that CTHRC1 enhances the biological behavior of EOC including cell migration, invasion, as well as its adhesion capability to cell-extracellular matrix in vitro. Additionally, CTHRC1 promoted metastatic spread of EOC cells in an i.p. ovarian xenograft model and this phenotype was primarily ascribed to the activation of integrin/FAK signaling. Mechanistically, we determined that FAK were phosphorylated on Tyr397, and were activated by integrin β3, which is important for the CTHRC1-mediated migratory and invasive ability of EOC cells in vitro and i.p. metastasis. In addition, we found that attenuated CTHRC1/integrin β3 expression predicted a poor prognostic phenotype and advanced clinical stage of EOC. CONCLUSIONS Our results suggest that CTHRC1, a newly identified regulator of i.p. metastasis through activation of integrin β3/FAK signaling in EOC, may represent a potential therapeutic target for ovarian cancer.
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Affiliation(s)
- Biying Guo
- Department of Gynecology and Obstetrics, Shanghai Key Laboratory of Gynecology Oncology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, PuJian Road No.160, Shanghai, 200127, China
| | - Huan Yan
- Department of Gynecology and Obstetrics, Shanghai First Maternity and Infant Hospital, School of Medicine, Shanghai Tong Ji University, Shanghai, 201204, China
| | - Luying Li
- Department of Gynecology and Obstetrics, Shanghai Key Laboratory of Gynecology Oncology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, PuJian Road No.160, Shanghai, 200127, China
| | - Kemin Yin
- Department of Gynecology and Obstetrics, Shanghai Key Laboratory of Gynecology Oncology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, PuJian Road No.160, Shanghai, 200127, China
| | - Fang Ji
- Department of Gynecology and Obstetrics, Shanghai Key Laboratory of Gynecology Oncology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, PuJian Road No.160, Shanghai, 200127, China.
| | - Shu Zhang
- Department of Gynecology and Obstetrics, Shanghai Key Laboratory of Gynecology Oncology, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, PuJian Road No.160, Shanghai, 200127, China.
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Zhang D, Wang S, Chen J, Liu H, Lu J, Jiang H, Huang A, Chen Y. Fibulin-4 promotes osteosarcoma invasion and metastasis by inducing epithelial to mesenchymal transition via the PI3K/Akt/mTOR pathway. Int J Oncol 2017; 50:1513-1530. [PMID: 28339091 PMCID: PMC5403358 DOI: 10.3892/ijo.2017.3921] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 03/13/2017] [Indexed: 01/01/2023] Open
Abstract
This study explored the role of fibulin-4 in osteosarcoma progression and the possible signaling pathway involved. Fibulin-4 mRNA and protein expression in normal tissue, benign fibrous dysplasia, osteosarcoma, osteosarcoma cell lines, the normal osteoblastic cell line hFOB, and different invasive subclones were evaluated by immunohistochemistry (IHC) or immunocytochemistry (ICC) and real-time reverse transcriptase-polymerase chain reaction (real-time qRT-PCR). Using in vitro functional assays, we analyzed the invasive and proliferative abilities of different osteosarcoma cell lines and subclones with differing invasive potential. To assess the role of fibulin-4 in the invasion and metastasis of osteosarcoma cells, lentiviral vectors with fibulin-4 small hairpin RNA (shRNA) and pLVX-fibulin-4 were constructed and used to infect the highly invasive and low invasive subclones and osteosarcoma cell lines. The effects of fibulin-4 knockdown and upregulation on the biological behavior of osteosarcoma cells were investigated by functional in vitro and in vivo assays. The results revealed that fibulin-4 expression was upregulated in osteosarcoma, and was positively correlated with low differentiation, lymph node metastasis, and poor prognosis. Fibulin-4 was also found to be over-expressed in highly invasive cell lines and in the highly invasive subclones. Fibulin-4 could promote osteosarcoma cell invasion and metastasis by inducing EMT via the PI3K/AKT/mTOR pathway. Collectively, our findings demonstrate that fibulin-4 is a promoter of osteosarcoma development and progression, and suggest a novel therapeutic target for future studies.
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Affiliation(s)
- Dong Zhang
- Department of Orthopedics, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Songgang Wang
- Department of Orthopedics, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Jie Chen
- Department of Maternal and Child Health, School of Public Health, Shandong University, Jinan, Shandong 250012, P.R. China
| | - Haitao Liu
- Department of Orthopedics, Xiangcheng No. 2 People's Hospital, Suzhou, Jiangsu 215143, P.R. China
| | - Jinfa Lu
- Department of Orthopedics, Xiangcheng No. 2 People's Hospital, Suzhou, Jiangsu 215143, P.R. China
| | - Hua Jiang
- Department of Orthopedics, Xiangcheng No. 2 People's Hospital, Suzhou, Jiangsu 215143, P.R. China
| | - Aimin Huang
- Department of Orthopedics, Xiangcheng No. 2 People's Hospital, Suzhou, Jiangsu 215143, P.R. China
| | - Yunzhen Chen
- Department of Orthopedics, Qilu Hospital, Shandong University, Jinan, Shandong 250012, P.R. China
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8
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Wang G, Wang X, Huang X, Yang H, Pang S, Xie X, Zeng S, Lin J, Diao Y. Inhibition of integrin β3, a binding partner of kallistatin, leads to reduced viability, invasion and proliferation in NCI-H446 cells. Cancer Cell Int 2016; 16:90. [PMID: 27980455 PMCID: PMC5134261 DOI: 10.1186/s12935-016-0365-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Accepted: 11/23/2016] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Kallistatin is a serine proteinase inhibitor and heparin-binding protein. It is considered an endogenous angiogenic inhibitor. In addition, multiple studies demonstrated that kallistatin directly inhibits cancer cell growth. However, the molecular mechanisms underlying these effects remain unclear. METHODS Pull-down, immunoprecipitation, and immunoblotting were used for binding experiments. To elucidate the mechanisms, integrin β3 knockdown (siRNA) or blockage (antibody treatment) on the cell surface of small the cell lung cancer NCI-H446 cell line was used. RESULTS Interestingly, kallistatin was capable of binding integrin β3 on the cell surface of NCI-H446 cells. Meanwhile, integrin β3 knockdown or blockage resulted in loss of antitumor activities induced by kallistatin. Furthermore, kallistatin suppressed tyrosine phosphorylation of integrin β3 and its downstream signaling pathways, including FAK/-Src, AKT and Erk/MAPK. Viability, proliferation and migration of NCI-H446 cells were inhibited by kallistatin, with Bcl-2 and Grb2 downregulation, and Bax, cleaved caspase-9 and caspase 3 upregulation. CONCLUSIONS These findings reveal a novel role for kallistatin in preventing small cell lung cancer growth and mobility, by direct interaction with integrin β3, leading to blockade of the related signaling pathway.
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Affiliation(s)
- Guoquan Wang
- Institute of Molecular Medicine, Huaqiao University, Quanzhou, 362021 China
| | - Xiao Wang
- Institute of Molecular Medicine, Huaqiao University, Quanzhou, 362021 China
| | - Xiaoping Huang
- Institute of Molecular Medicine, Huaqiao University, Quanzhou, 362021 China.,College of Chemical Engineering and Materials Sciences, Quanzhou Normal University, Quanzhou, 326000 China.,School of Chemistry and Chemical Engineering of Guangxi Normal University, Guilin, 541004 China
| | - Huiyong Yang
- Institute of Molecular Medicine, Huaqiao University, Quanzhou, 362021 China
| | - Suqiu Pang
- Institute of Molecular Medicine, Huaqiao University, Quanzhou, 362021 China
| | - Xiaolan Xie
- College of Chemical Engineering and Materials Sciences, Quanzhou Normal University, Quanzhou, 326000 China
| | - Shulan Zeng
- School of Chemistry and Chemical Engineering of Guangxi Normal University, Guilin, 541004 China
| | - Junsheng Lin
- Institute of Molecular Medicine, Huaqiao University, Quanzhou, 362021 China
| | - Yong Diao
- Institute of Molecular Medicine, Huaqiao University, Quanzhou, 362021 China
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9
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Chen WC, Hsu HP, Li CY, Yang YJ, Hung YH, Cho CY, Wang CY, Weng TY, Lai MD. Cancer stem cell marker CD90 inhibits ovarian cancer formation via β3 integrin. Int J Oncol 2016; 49:1881-1889. [PMID: 27633757 PMCID: PMC5063452 DOI: 10.3892/ijo.2016.3691] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Accepted: 09/02/2016] [Indexed: 12/26/2022] Open
Abstract
Cancer stem cell (CSC) markers have been identified for CSC isolation and proposed as therapeutic targets in various types of cancers. CD90, one of the characterized markers in liver and gastric cancer, is shown to promote cancer formation. However, the underexpression level of CD90 in ovarian cancer cells and the evidence supporting the cellular mechanism have not been investigated. In the present study, we found that the DNA copy number of CD90 is correlated with mRNA expression in ovarian cancer tissue and the ovarian cancer patients with higher CD90 have good prognosis compared to the patients with lower CD90. Although the expression of CD90 in human ovarian cancer SKOV3 cells enhances the cell proliferation by MTT and anchorage-dependent growth assay, CD90 inhibits the anchorage-independent growth ability in vitro and tumor formation in vivo. CD90 overexpression suppresses the sphere-forming ability and ALDH activity and enhances the cell apoptosis, indicating that CD90 may reduce the cell growth by the properties of CSC and anoikis. Furthermore, CD90 reduces the expression of other CSC markers, including CD133 and CD24. The inhibition of CD133 is attenuated by the mutant CD90, which is replaced with RLE domain into RLD domain. Importantly, the CD90-regulated inhibition of CD133 expression, anchorage-independent growth and signal transduction of mTOR and AMPK are restored by the β3 integrin shRNA. Our results provide evidence that CD90 mediates the antitumor formation by interacting with β3 integrin, which provides new insight that can potentially be applied in the development of therapeutic strategies in ovarian cancer.
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Affiliation(s)
- Wei-Ching Chen
- Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng Kung University, Tainan, Taiwan, R.O.C
| | - Hui-Ping Hsu
- Department of Surgery, College of Medicine, National Cheng Kung University, Tainan, Taiwan, R.O.C
| | - Chung-Yen Li
- Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng Kung University, Tainan, Taiwan, R.O.C
| | - Ya-Ju Yang
- Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng Kung University, Tainan, Taiwan, R.O.C
| | - Yu-Hsuan Hung
- Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng Kung University, Tainan, Taiwan, R.O.C
| | - Chien-Yu Cho
- Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng Kung University, Tainan, Taiwan, R.O.C
| | - Chih-Yang Wang
- Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng Kung University, Tainan, Taiwan, R.O.C
| | - Tzu-Yang Weng
- Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng Kung University, Tainan, Taiwan, R.O.C
| | - Ming-Derg Lai
- Department of Biochemistry and Molecular Biology, College of Medicine, National Cheng Kung University, Tainan, Taiwan, R.O.C
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10
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Bai H, Li H, Li W, Gui T, Yang J, Cao D, Shen K. The PI3K/AKT/mTOR pathway is a potential predictor of distinct invasive and migratory capacities in human ovarian cancer cell lines. Oncotarget 2016; 6:25520-32. [PMID: 26267321 PMCID: PMC4694849 DOI: 10.18632/oncotarget.4550] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Accepted: 07/04/2015] [Indexed: 12/21/2022] Open
Abstract
Objectives To explore the genetic and molecular events that control subclones exhibiting distinct invasive/migratory capacities derived from human epithelial ovarian cancer (EOC) cell line A2780 and SKOV3. Methods Single-cell subclones were isolated and established that were derived from the SKOV3 and A2780 cell lines through limiting dilution methodology. Transwell insert assays and MTT assays were performed to screen and identify the subclones exhibiting the highest and the lowest invasive/migratory capacities, and the selected subclones were renamed as A-H (A2780 high), A-L (A2780 low), S-H (SKOV3 high), and S-L (SKOV3 low). Their biological characteristics were evaluated. RNA-Seq was conducted on the targeted subclones. Results Compared with their corresponding counterparts, A-H/S-H cells exhibited significantly higher invasive/migratory capacities (P < 0.001 and = 0.001, respectively). A-H/S-H cells displayed a clear reduction in doubling time (P = 0.004 and 0.001, respectively), and a significant increase in the percentage of cells in S phase (P = 0.004 and 0.022, respectively). Additionally, the apoptotic rates of A-H/S-H cells were significantly lower than those of A-L/S-L cells (P = 0.002 and 0.026, respectively). At both mRNA and protein levels, caspase-3 and caspase-7 expression were reduced but Bcl-2 expression was increased in A-H/S-H cells. The TrkB (anoikis-related) and Beclin1 (autophagy-related) levels were consistently high and low, respectively, in both A-H/S-H cells. Resistance to chemotherapy in vitro and higher capacities on tumor formation in vivo was presented in both A-H/S-H cells. PI3K/AKT/mTOR pathway components, PIK3CA, PIK3CD, AKT3, ECM1, GPCR, mTOR and PRKCB were increased but that the Nur77 and PTEN were decreased in A-H/S-H cells, identified by RNA-Seq and consistently confirmed by RT-PCR and Western blot analyses. Conclusions Heterogeneous cell subpopulations exhibiting distinct invasive and migratory capacities co-exist within the SKOV3 and A2780 cell lines. PI3K/AKT/mTOR pathway activation is associated with higher invasive and migratory capacities in subpopulations of human ovarian cancer cell lines. Inhibiting this pathway may be useful for the chemoprevention or treatment of EOC.
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Affiliation(s)
- Huimin Bai
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing China.,Department of Obstetrics and Gynecology, Beijing Chao-Yang Hospital, China Capital Medical University, Beijing China
| | - Haixia Li
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing China
| | - Weihua Li
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing China
| | - Ting Gui
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing China
| | - Jiaxin Yang
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing China
| | - Dongyan Cao
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing China
| | - Keng Shen
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing China
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Chen J, Liu Z, Fang S, Fang R, Liu X, Zhao Y, Li X, Huang L, Zhang J. Fibulin-4 is associated with tumor progression and a poor prognosis in ovarian carcinomas. BMC Cancer 2015; 15:91. [PMID: 25885889 PMCID: PMC4359517 DOI: 10.1186/s12885-015-1100-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 02/20/2015] [Indexed: 12/16/2022] Open
Abstract
Background Fibulin-4, a member of the fibulin family of extracellular glycoproteins, is implicated in the progressions of some cancers. However, no information has been available to date regarding the function of fibulin-4 in ovarian carcinoma progression. Methods In this study, fibulin-4 mRNA and protein expression in normal ovarian tissue, ovarian tumor, high invasive subclones and low invasive subclones were evaluated by immunohistochemistry and real time reverse transcriptase-polymerase chain reaction (RT-PCR). The serum levels of fibulin-4, cancer antigen 125 (CA-125) and cerbohydrate antigen 199 (CA19-9) in patients with ovarian tumor were measured by enzyme-linked immunosorbent assay and electrochemiluminescent immunoassay. To assess the angiogenic properties of fibulin-4, vascular endothelial growth factor (VEGF) expression and tumor microvessel density were analyzed in ovarian carcinoma by immunohistochemistry. Results Fibulin-4 expression was upregulated in ovarian carcinoma, and positively correlated with MVD and VEGF expression. Fibulin-4 overexpression was significantly associated with advanced stage, low differentiation, lymph node metastasis and poor prognosis in patients with ovarian cancer. The serum levels of fibulin-4, CA-125 and CA19-9 in patients with ovarian carcinoma were much higher than those with benign ovarian tumors and normal controls. Compared to CA-125 and CA19-9, fibulin-4 had better diagnostic sensitivity and specificity. Conclusions Fibulin-4 is a novel gene that is found overexpressed in ovarian cancer and associated with poor prognostic clinicopathologic features. This study shows that fibulin-4 may serve as a new prognostic factor and as a potential therapeutic target for patients with ovarian cancer in the future.
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Affiliation(s)
- Jie Chen
- Department of Maternal and Child Health Care, School of Public Health, Shandong University, Jinan, 250012, China.
| | - Zhao Liu
- Hepatobiliary and Pancreatic Surgery, Jinan Central Hospital affiliated to Shandong University, Jinan, 250013, China.
| | - Shuang Fang
- Biochemistry & Molecular Biology, Georgetown University, Georgetown, Washington D.C, 20057, USA.
| | - Rui Fang
- Grade 2011, Clinical Medicine, School of Medicine, Shandong University, Jinan, 250012, China.
| | - Xi Liu
- Grade 2011, Clinical Medicine, School of Medicine, Shandong University, Jinan, 250012, China.
| | - Yueran Zhao
- Central Laboratory, Shandong Provincial Hospital affiliated to Shandong University, Jinan, 250021, China.
| | - XiangXin Li
- Department of Haematology, QiLu Hospital of Shandong University, Jinan, 250012, China.
| | - Lei Huang
- Department of Pediatrics, Shandong Provincial Hospital affiliated to Shandong University, Jinan, 250021, China.
| | - Jie Zhang
- Central Laboratory, Shandong Provincial Hospital affiliated to Shandong University, Jinan, 250021, China.
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12
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Hua KT, Wang MY, Chen MW, Wei LH, Chen CK, Ko CH, Jeng YM, Sung PL, Jan YH, Hsiao M, Kuo ML, Yen ML. The H3K9 methyltransferase G9a is a marker of aggressive ovarian cancer that promotes peritoneal metastasis. Mol Cancer 2014; 13:189. [PMID: 25115793 PMCID: PMC4260797 DOI: 10.1186/1476-4598-13-189] [Citation(s) in RCA: 107] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Accepted: 08/07/2014] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Ovarian cancer (OCa) peritoneal metastasis is the leading cause of cancer-related deaths in women with limited therapeutic options available for treating it and poor prognosis, as the underlying mechanism is not fully understood. METHOD The clinicopathological correlation of G9a expression was assessed in tumor specimens of ovarian cancer patients. Knockdown or overexpression of G9a in ovarian cancer cell lines was analysed with regard to its effect on adhesion, migration, invasion and anoikis-resistance. In vivo biological functions of G9a were tested by i.p. xenograft ovarian cancer models. Microarray and quantitative RT-PCR were used to analyze G9a-regulated downstream target genes. RESULTS We found that the expression of histone methyltransferase G9a was highly correlated with late stage, high grade, and serous-type OCa. Higher G9a expression predicted a shorter survival in ovarian cancer patients. Furthermore, G9a expression was higher in metastatic lesions compared with their corresponding ovarian primary tumors. Knockdown of G9a expression suppressed prometastatic cellular activities including adhesion, migration, invasion and anoikis-resistance of ovarian cancer cell lines, while G9a over-expression promoted these cellular properties. G9a depletion significantly attenuated the development of ascites and tumor nodules in a peritoneal dissemination model. Importantly, microarray and quantitative RT-PCR analysis revealed that G9a regulates a cohort of tumor suppressor genes including CDH1, DUSP5, SPRY4, and PPP1R15A in ovarian cancer. Expression of these genes was also inversely correlated with G9a expression in OCa specimens. CONCLUSION We propose that G9a contributes to multiple steps of ovarian cancer metastasis and represents a novel target to combat this deadly disease.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Min-Liang Kuo
- Graduate Institute of Toxicology, National Taiwan University College of Medicine, Taipei, Taiwan.
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13
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Chen J, Wei D, Zhao Y, Liu X, Zhang J. Overexpression of EFEMP1 correlates with tumor progression and poor prognosis in human ovarian carcinoma. PLoS One 2013; 8:e78783. [PMID: 24236050 PMCID: PMC3827232 DOI: 10.1371/journal.pone.0078783] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Accepted: 09/21/2013] [Indexed: 11/25/2022] Open
Abstract
Objective This study was to explore the role of EFEMP1 in ovarian tumor progression and its relationship with prognosis of ovarian carcinoma. Methods EFEMP1 mRNA and protein expressions in normal ovarian tissue, ovarian tumor, high invasive subclones and low invasive subclones were evaluated by immunohistochemistry and real time RT-PCR. Serum EFEMP1 levels in patients with ovarian tumor were measured by ELISA assay. To assess the angiogenic properties of EFEMP1, VEGF and tumor microvessel density were analyzed in ovarian carcinoma by immunohistochemistry. Results EFEMP1 expression was up-regulated in ovarian carcinoma, positively correlated with MVD and VEGF, and its overexpression and high serum levels were significantly associated with high stage, low differentiation, lymph node metastasis and poor prognosis of ovarian cancer. EFEMP1 expression was also found to be over-expressed in the highly invasive subclones compared with the low invasive subclones. Conclusion EFEMP1 is a newly identified gene over-expressed in ovarian cancer, associated with poor clinicopathologic features and promotes angiogenesis. This study shows that EFEMP1 may serve as a new prognostic factor and a therapeutic target for patients with ovarian cancer in the future.
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Affiliation(s)
- Jie Chen
- Department of Maternal and Child Health Care, School of Public Health, Shandong University, Jinan, China
| | - Deying Wei
- Department of Obstetrics and Gynecology, Shandong Provincial Hospital affiliated to Shandong University, Jinan, China
- * E-mail: (DW); (JZ)
| | - Yueran Zhao
- Central Laboratory, Shandong Provincial Hospital affiliated to Shandong University, Jinan, China
| | - Xiaoyan Liu
- Department of Obstetrics and Gynecology, Qilu Hospital, Shandong University, Jinan, China
| | - Jie Zhang
- Central Laboratory, Shandong Provincial Hospital affiliated to Shandong University, Jinan, China
- * E-mail: (DW); (JZ)
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Chen J, Liu X, Zhang J, Zhao Y. Targeting HMGB1 inhibits ovarian cancer growth and metastasis by lentivirus-mediated RNA interference. J Cell Physiol 2012; 227:3629-38. [PMID: 22331597 DOI: 10.1002/jcp.24069] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
High-mobility group box 1 (HMGB1), a nuclear and extracellular protein, is implicated in the development and progression of some types of cancers. However, no information is available to date regarding the function of HMGB1 in ovarian cancer. In this study, we performed cDNA microarray analysis and identified HMGB1 as a gene dramatically elevated in the highly invasive subclone S1 compared with the low invasive subclone S21 derived from the same cell line SKOV3. Then lentivirus vector with HMGB1 shRNA was constructed and infected the highly invasive cell line S1, A1, and HO8910PM. Real-time RT-PCR, Western blot, and IHC results confirmed the down-regulation of HMGB1 expression by its shRNA was about 80-90% at both the mRNA and protein levels. Knockdown of HMGB1 significantly suppressed ovarian cancer cell proliferation and induced cell cycle arrest at the G1/G0 phase, which was accompanied by decreased expressions of cyclin D1 and PCNA. Furthermore, knockdown of HMGB1 induced ovarian cancer cell apoptosis, which was mediated by increased expression of Bax and decreased expression of Bcl-2. Finally, knockdown of HMGB1 significantly inhibited ovarian cancer cell invasion and metastasis, which was regulated by decreased expressions of MMP2 and MMP9. Serum HMGB1 levels in patients with epithelial ovarian cancer were significantly higher than that in patients with benign ovarian tumor and healthy controls. These results indicate that HMGB1 is a newly identified gene associated with ovarian cancer growth and metastasis. HMGB1 may serve as a new therapeutic target for the treatment of ovarian cancer in the future.
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Affiliation(s)
- Jie Chen
- Department of Maternal and Child Health Care, School of Public Health, Shandong University, Jinan, China
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15
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Chen J, Wang M, Xi B, Xue J, He D, Zhang J, Zhao Y. SPARC is a key regulator of proliferation, apoptosis and invasion in human ovarian cancer. PLoS One 2012; 7:e42413. [PMID: 22879971 PMCID: PMC3411787 DOI: 10.1371/journal.pone.0042413] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2012] [Accepted: 07/05/2012] [Indexed: 01/03/2023] Open
Abstract
Background Secreted protein acidic and rich in cysteine (SPARC), a calcium-binding matricellular glycoprotein, is implicated in the progression of many cancers. In this study, we investigated the expression and function of SPARC in ovarian cancer. Methods cDNA microarray analysis was performed to compare gene expression profiles of the highly invasive and the low invasive subclones derived from the SKOV3 human ovarian cancer cell line. Immunohistochemistry (IHC) staining was performed to investigate SPARC expression in a total of 140 ovarian tissue specimens. In functional assays, effects of SPARC knockdown on the biological behavior of ovarian cancer cells were investigated. The mechanisms of SPARC in ovarian cancer proliferation, apoptosis and invasion were also researched. Results SPARC was overexpressed in the highly invasive subclone compared with the low invasive subclone. High SPARC expression was associated with high stage, low differentiation, lymph node metastasis and poor prognosis of ovarian cancer. Knockdown of SPARC expression significantly suppressed ovarian cancer cell proliferation, induced cell apoptosis and inhibited cell invasion and metastasis. Conclusion SPARC is overexpressed in highly invasive subclone and ovarian cancer tissues and plays an important role in ovarian cancer growth, apoptosis and metastasis.
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Affiliation(s)
- Jie Chen
- Department of Maternal and Child Health Care, School of Public Health, Shandong University, Jinan, China
| | - Mei Wang
- Pharmacy Department, Shandong Provincial Hospital affiliated to Shandong University, Jinan, China
| | - Bo Xi
- Department of Maternal and Child Health Care, School of Public Health, Shandong University, Jinan, China
| | - Jian Xue
- Department of Maternal and Child Health Care, School of Public Health, Shandong University, Jinan, China
| | - Dan He
- Department of Maternal and Child Health Care, School of Public Health, Shandong University, Jinan, China
| | - Jie Zhang
- Central Laboratory, Shandong Provincial Hospital affiliated to Shandong University, Jinan, China
- * E-mail: (JZ); (YZ)
| | - Yueran Zhao
- Central Laboratory, Shandong Provincial Hospital affiliated to Shandong University, Jinan, China
- * E-mail: (JZ); (YZ)
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16
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Tumbarello DA, Temple J, Brenton JD. ß3 integrin modulates transforming growth factor beta induced (TGFBI) function and paclitaxel response in ovarian cancer cells. Mol Cancer 2012; 11:36. [PMID: 22640878 PMCID: PMC3442987 DOI: 10.1186/1476-4598-11-36] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2011] [Accepted: 05/28/2012] [Indexed: 02/05/2023] Open
Abstract
Background The extracellular matrix (ECM) has a key role in facilitating the progression of ovarian cancer and we have shown recently that the secreted ECM protein TGFBI modulates the response of ovarian cancer to paclitaxel-induced cell death. Results We have determined TGFBI signaling from the extracellular environment is preferential for the cell surface αvß3 integrin heterodimer, in contrast to periostin, a TGFBI paralogue, which signals primarily via a ß1 integrin-mediated pathway. We demonstrate that suppression of ß1 integrin expression, in ß3 integrin-expressing ovarian cancer cells, increases adhesion to rTGFBI. In addition, Syndecan-1 and −4 expression is dispensable for adhesion to rTGFBI and loss of Syndecan-1 cooperates with the loss of ß1 integrin to further enhance adhesion to rTGFBI. The RGD motif present in the carboxy-terminus of TGFBI is necessary, but not sufficient, for SKOV3 cell adhesion and is dispensable for adhesion of ovarian cancer cells lacking ß3 integrin expression. In contrast to TGFBI, the carboxy-terminus of periostin, lacking a RGD motif, is unable to support adhesion of ovarian cancer cells. Suppression of ß3 integrin in SKOV3 cells increases resistance to paclitaxel-induced cell death while suppression of ß1 integrin has no effect. Furthermore, suppression of TGFBI expression stimulates a paclitaxel resistant phenotype while suppression of fibronectin expression, which primarily signals through a ß1 integrin-mediated pathway, increases paclitaxel sensitivity. Conclusions Therefore, different ECM components use distinct signaling mechanisms in ovarian cancer cells and in particular, TGFBI preferentially interacts through a ß3 integrin receptor mediated mechanism to regulate the response of cells to paclitaxel-induced cell death.
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Affiliation(s)
- David A Tumbarello
- Cancer Research UK, Cambridge Research Institute, Robinson Way, Cambridge CB2 0RE, United Kingdom
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Chen J, Xi B, Zhao Y, Yu Y, Zhang J, Wang C. High-mobility group protein B1 (HMGB1) is a novel biomarker for human ovarian cancer. Gynecol Oncol 2012; 126:109-17. [PMID: 22484401 DOI: 10.1016/j.ygyno.2012.03.051] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2011] [Revised: 03/26/2012] [Accepted: 03/30/2012] [Indexed: 11/24/2022]
Abstract
BACKGROUND High mobility group box l (HMGB1), a nuclear and extracellular protein, is implicated in some physiologic and pathologic conditions. In this study, we investigated the expression and function of HMGB1 in ovarian cancer. METHODS cDNA microarray analysis was performed to compare gene expression profiles of the highly invasive and the low invasive subclones derived from the SKOV3 human ovarian cancer cell line. Immunohistochemistry (IHC) staining was performed to investigate HMGB1 expression in a total of 100 ovarian tissue specimens. In functional assays, effects of HMGB1 knockdown on the biological behavior of ovarian cancer cells were investigated. RESULTS HMGB1 was overexpressed in the highly invasive subclone compared with the low invasive subclone. High HMGB1 expression was associated with poor clinicopathologic features. Knockdown of HMGB1 expression significantly suppressed ovarian cancer cell proliferation accompanied by decreased cyclin D1 and PCNA expression, and inhibited cell migration and invasion accompanied by decreased MMP2 and MMP9 activities. CONCLUSION HMGB1 is a newly identified gene overexpressed in ovarian cancer and associated with poor clinicopathologic features. HMGB1 may serve as a new biomarker and a therapeutic target for ovarian cancer in the future.
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Affiliation(s)
- Jie Chen
- Department of Maternal and Child Health Care, School of Public Health, Shandong University, Jinan, 250012, China
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Lei Y, Huang K, Gao C, Lau QC, Pan H, Xie K, Li J, Liu R, Zhang T, Xie N, Nai HS, Wu H, Dong Q, Zhao X, Nice EC, Huang C, Wei Y. Proteomics identification of ITGB3 as a key regulator in reactive oxygen species-induced migration and invasion of colorectal cancer cells. Mol Cell Proteomics 2011; 10:M110.005397. [PMID: 21622897 PMCID: PMC3205852 DOI: 10.1074/mcp.m110.005397] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2010] [Revised: 05/26/2011] [Indexed: 02/05/2023] Open
Abstract
Colorectal cancer (CRC) is the third most commonly diagnosed cancer in males and second in females worldwide. Unfortunately 40-50% of patients already have metastatic disease at presentation when prognosis is poor with a 5-year survival of <10%. Reactive oxygen species (ROS) have been proposed to play a crucial role in tumor metastasis. We now show that higher levels of ROS accumulation are found in a colorectal cancer-derived metastatic cell line (SW620) compared with a cell line (SW480) derived from the primary lesion from the same patient. In addition, ROS accumulation can affect both the migratory and invasive capacity of SW480 and SW620 cells. To explore the molecular mechanism underlying ROS-induced migration and invasion in CRC, we have compared protein expression patterns between SW480 and SW620 cells using a two-dimensional electrophoresis-based proteomics strategy. A total of 63 altered proteins were identified from tandem MS analysis. Cluster analysis revealed dysregulated expression of multiple redox regulative or ROS responsive proteins, implicating their functional roles in colorectal cancer metastasis. Molecular and pathological validation demonstrated that altered expression of PGAM1, GRB2, DJ-1, ITGB3, SOD-1, and STMN1 was closely correlated with the metastatic potential of CRC. Functional studies showed that ROS markedly up-regulated expression of ITGB3, which in turn promoted an aggressive phenotype in SW480 cells, with concomitant up-regulated expression of STMN1. In contrast, knockdown of ITGB3 expression could mitigate the migratory and invasive potential of SW620 or H(2)O(2)-treated SW480 cells, accompanied by down-regulated expression of STMN1. The function of ITGB3 was dependent on the surface expression of integrin αvβ3 heterodimer. Furthermore, STMN1 expression and the PI3K-Akt-mTOR pathway were found to be involved in ROS-induced and ITGB3-mediated migration and invasion of colorectal cancer cells. Taken together, these studies suggest that ITGB3 plays an important role in ROS-induced migration and invasion in CRC.
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Affiliation(s)
- Yunlong Lei
- From the ‡The State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, P. R. China
| | - Kai Huang
- From the ‡The State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, P. R. China
| | - Cong Gao
- §Department of General Surgery, Sichuan Provincial People's Hospital, Chengdu, 610041, P. R. China
| | - Quek Choon Lau
- ¶School of Life Sciences and Chemical Technology, Ngee Ann Polytechnic. 535 Clementi Road, Republic of Singapore
| | - Hua Pan
- §Department of General Surgery, Sichuan Provincial People's Hospital, Chengdu, 610041, P. R. China
| | - Ke Xie
- §Department of General Surgery, Sichuan Provincial People's Hospital, Chengdu, 610041, P. R. China
| | - Jingyi Li
- From the ‡The State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, P. R. China
| | - Rui Liu
- From the ‡The State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, P. R. China
| | - Tao Zhang
- From the ‡The State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, P. R. China
| | - Na Xie
- From the ‡The State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, P. R. China
| | - Huey Shan Nai
- ¶School of Life Sciences and Chemical Technology, Ngee Ann Polytechnic. 535 Clementi Road, Republic of Singapore
| | - Hong Wu
- ‖Department of Urology and General Surgery, West China Hospital, Sichuan University, Chengdu, 610041, P. R. China
| | - Qiang Dong
- ‖Department of Urology and General Surgery, West China Hospital, Sichuan University, Chengdu, 610041, P. R. China
| | - Xia Zhao
- From the ‡The State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, P. R. China
| | - Edouard C. Nice
- **Monash University, Department of Biochemistry and Molecular Biology, Clayton, Victoria 3800, Australia
| | - Canhua Huang
- From the ‡The State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, P. R. China
| | - Yuquan Wei
- From the ‡The State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, P. R. China
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