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Wang J, Yang T, Chen H, Li H, Zheng S. Oncogene RPA1 promotes proliferation of hepatocellular carcinoma via CDK4/ Cyclin-D pathway. Biochem Biophys Res Commun 2018; 498:424-430. [PMID: 29477843 DOI: 10.1016/j.bbrc.2018.02.167] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Accepted: 02/21/2018] [Indexed: 11/28/2022]
Abstract
As the sixth most prevalent cancer, hepatocellular carcinoma (HCC) is the third leading cause of cancer-related deaths worldwide. Human replication protein A (RPA), a three-subunit protein, plays a central role in eukaryotic DNA replication, homologous recombination, and excision repair, including RPA1, RPA2 and RPA3. Recently, some studies focusing on the relation between RPA1 and carcinogenesis have demonstrated that RPA1 is a candidate oncogene and influences tumor biological behaviors in many cancers such as esophageal carcinoma, colon cancer, urothelial carcinomas, etc. However, the characteristic role of RPA1 in HCC and the detailed potential mechanism remain unknown. To identify the real effects of RPA1 on HCC and its potential pathway participating in the changes of liver cancer cells, we have conducted this study and demonstrated that RPA1 is up-regulated both in liver cancer cell lines and HCC tissues, which is associated with poorer prognosis, advanced TNM stage and larger tumor size. Stable knock-down of RPA1 by specific small hairpin RNA (shRNA) contributes to the impaired proliferate ability of SK-HEP-1 cells both in vitro and vivo. Consistently, upregulation of RPA1 in HuH-7 cells by specific adenovirus promotes tumor cells' proliferation. Furthermore, cyclin-dependent-kinase 4(CDK4)/Cyclin-D pathway is found to be well associated with RPA1 induced proliferation. In conclusion, RPA1 plays a pivotal role as a potential oncogene in HCC and promotes tumor proliferation via CDK4/Cyclin-D pathway.
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Affiliation(s)
- Jingcheng Wang
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, 310003, China; Key Laboratory of Combined Multi-organ Transplantation, Ministry of Public Health Key Laboratory of Organ Transplantation, Hangzhou, Zhejiang Province, 310003, China; Collaborative Innovation Center for Diagnosis Treatment of Infectious Diseases, Hangzhou, Zhejiang Province, 310003, China
| | - Tian Yang
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, 310003, China; Key Laboratory of Combined Multi-organ Transplantation, Ministry of Public Health Key Laboratory of Organ Transplantation, Hangzhou, Zhejiang Province, 310003, China; Collaborative Innovation Center for Diagnosis Treatment of Infectious Diseases, Hangzhou, Zhejiang Province, 310003, China
| | - Hui Chen
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, 310003, China; Key Laboratory of Combined Multi-organ Transplantation, Ministry of Public Health Key Laboratory of Organ Transplantation, Hangzhou, Zhejiang Province, 310003, China; Collaborative Innovation Center for Diagnosis Treatment of Infectious Diseases, Hangzhou, Zhejiang Province, 310003, China
| | - Hui Li
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, 310003, China; Key Laboratory of Combined Multi-organ Transplantation, Ministry of Public Health Key Laboratory of Organ Transplantation, Hangzhou, Zhejiang Province, 310003, China; Collaborative Innovation Center for Diagnosis Treatment of Infectious Diseases, Hangzhou, Zhejiang Province, 310003, China
| | - Shusen Zheng
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, 310003, China; Key Laboratory of Combined Multi-organ Transplantation, Ministry of Public Health Key Laboratory of Organ Transplantation, Hangzhou, Zhejiang Province, 310003, China; Collaborative Innovation Center for Diagnosis Treatment of Infectious Diseases, Hangzhou, Zhejiang Province, 310003, China.
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Saleh AM, Al-Qudah MA, Nasr A, Rizvi SA, Borai A, Daghistani M. Comprehensive Analysis of the Chemical Composition and In Vitro Cytotoxic Mechanisms of Pallines Spinosa Flower and Leaf Essential Oils Against Breast Cancer Cells. Cell Physiol Biochem 2017; 42:2043-2065. [PMID: 28803233 DOI: 10.1159/000479900] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 06/20/2017] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS In our quest for new natural anticancer agents, we studied the cytotoxicity of the essential oils extracted from flowers and leaves of Pallines spinosa. METHODS The essential oils were extracted by hydrodistillation and solid phase microextraction (SPME) from flowers and leaves of the plant and their composition was determined by GC/GC-MS. The cytotoxicity of the oils was evaluated against MCF-7 and MDA-MB-231 breast adenocarcinomas, and the non-cancerous MCF-10-2A cells, using a flow cytometry-based assay Apoptosis was evaluated by flow cytometry, nuclear staining, caspases activation, and Western blotting techniques, and cell cycle by measuring DNA contents. RESULTS The hydrodistilled flower oil contained mainly sesquiterpenes (96.39%), while the leaf sample was dominated by oxygenated-sesquiterpenes (51.60%) and sesquiterpene-hydrocarbons (34.06%). In contrast, the SPME oil contained mainly monoterpene-hydrocarbons (44.09%) and sesquiterpene-hydrocarbons (34.15%) in the flower and leaf samples, respectively. The cytotoxicity of the flower oil against MCF-7 (IC50 0.25 ± 0.03 µg/mL) and MDA-MB-231 (IC50 0.21 ± 0.03 µg/mL) was much stronger than the leaf oil (IC50 2.4 ± 0.5 µg/mL and 1.5 ± 0.1 µg/mL, respectively). The toxicity of the flower oil was ∼5 to 8-times less in normal MCF-10-2A (IC50 1.3 ± 0.2 µg/mL) and blood mononuclear cells (2.80 ± 0.45 µg/mL) as compared to breast and hematological cancer cells, respectively. Both oils induced a caspase-dependent and -independent apoptosis in MCF-7 and MDA-MB-231 cells, and altered the levels of Bcl-2 and Bax proteins. In addition, the oils arrested cell cycle in both cancer cell lines at G0/G1 phase by modulating the expression of cyclin D1, CDK4 and p21 proteins. CONCLUSION The cytotoxicity of P. spinosa oils were mediated by apoptosis and cell cycle arrest, suggesting the potential use of their bioactive compounds as natural anticancer compounds.
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Affiliation(s)
- Ayman M Saleh
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud Bin Abdulaziz University for Health Sciences (KSAU-HS), and King Abdullah International Medical Research Center (KAIMRC), King Abdulaziz Medical City, Ministry of National Guard Health Affairs, Jeddah, Saudi Arabia
| | - Mahmoud A Al-Qudah
- Department of Chemistry, Faculty of Science, Yarmouk University, Irbid, Jordan
| | - Amre Nasr
- Department of Basic Medical Sciences, College of Medicine, King Saud Bin Abdulaziz University for Health Sciences (KSAU-HS), National Guard Health Affairs, Riyadh, Saudi Arabia
| | - Sayed A Rizvi
- Department of Pharmaceutical Sciences, College of Pharmacy, Nova Southeastern University (NSU), Fort Lauderdale, Florida, USA
| | - Anwar Borai
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud Bin Abdulaziz University for Health Sciences (KSAU-HS), and King Abdullah International Medical Research Center (KAIMRC), King Abdulaziz Medical City, Ministry of National Guard Health Affairs, Jeddah, Saudi Arabia.,Department of Pathology and Laboratory Medicine, King Abdulaziz Medical City, Ministry of National Guard Health Affairs, Jeddah, Saudi Arabia
| | - Mustafa Daghistani
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud Bin Abdulaziz University for Health Sciences (KSAU-HS), and King Abdullah International Medical Research Center (KAIMRC), King Abdulaziz Medical City, Ministry of National Guard Health Affairs, Jeddah, Saudi Arabia.,Department of Pathology and Laboratory Medicine, King Abdulaziz Medical City, Ministry of National Guard Health Affairs, Jeddah, Saudi Arabia
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