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Yi Z, Liu P, Zhang Y, Mamuti D, Zhou W, Liu Z, Chen Z. METTL3 aggravates renal fibrogenesis in obstructive nephropathy via the miR-199a-3p/PAR4 axis. Eur J Pharmacol 2024; 982:176931. [PMID: 39182553 DOI: 10.1016/j.ejphar.2024.176931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 07/11/2024] [Accepted: 08/21/2024] [Indexed: 08/27/2024]
Abstract
Renal fibrosis is among the major factors contributing to the development of chronic kidney disease. In this regard, although N6-methyladenosine (m6A) modification and micro-RNAs (miRNAs) have been established to play key roles in diverse physiological processes and disease/disorder development, further research is required to identify the probable mechanisms and processes associated with their involvement in renal fibrosis. In this study, we show that transforming growth factor β1 (TGF-β1)-induced human proximal tubule epithelial cells (HK2) are characterized by dose-dependently higher methyltransferase-like 3 (METTL3) expression. Furthermore, METTL3 was found to enhance pri-miR-199a-3p maturation and miR-199a-3p expression in an m6A-dependent manner, whereas miR-199a-3p sponges prostate apoptotic response 4 (Par4), thereby regulating its expression. Collectively, our findings in this study indicate that the METTL3/miR-199a-3p/Par4 axis plays a key role in the development of obstructive nephrogenic fibrosis.
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Affiliation(s)
- Zhenglin Yi
- Departments of Urology, Xiangya Hospital, Central South University, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha, China
| | - Peihua Liu
- Departments of Urology, Xiangya Hospital, Central South University, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha, China
| | - Yinfan Zhang
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha, China; Teaching and Research Section of Clinical Nursing, Xiangya Hospital, Central South University, Changsha, China
| | - Dilishati Mamuti
- The Sixth Clinical Medical College Hospital, Xinjiang Medical University, Urumchi, China
| | - Weimin Zhou
- Departments of Urology, Xiangya Hospital, Central South University, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha, China
| | - Zhi Liu
- Departments of Urology, Xiangya Hospital, Central South University, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha, China
| | - Zhi Chen
- Departments of Urology, Xiangya Hospital, Central South University, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha, China.
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2
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Muteeb G, Khafaga DS, El-Morsy MT, Farhan M, Aatif M, Hosney M. Targeting tumor-associated macrophages with nanocarrier-based treatment for breast cancer: A step toward developing innovative anti-cancer therapeutics. Heliyon 2024; 10:e37217. [PMID: 39309874 PMCID: PMC11415663 DOI: 10.1016/j.heliyon.2024.e37217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 08/06/2024] [Accepted: 08/29/2024] [Indexed: 09/25/2024] Open
Abstract
Tumor-associated macrophages (TAMs) promote tumor advancement in many ways, such as inducing angiogenesis and the formation of new blood vessels that provide tumors with nourishment and oxygen. TAMs also facilitate tumor invasion and metastasis by secreting enzymes that degrade the extracellular matrix and generating pro-inflammatory cytokines that enhance the migration of tumor cells. TAMs also have a role in inhibiting the immune response against malignancies. To accomplish this, they release immunosuppressive cytokines such as IL-10, and TAMs can hinder the function of T cells and natural killer cells, which play crucial roles in the immune system's ability to combat cancer. The role of TAMs in breast cancer advancement is a complex and dynamic field of research. Therefore, TAMs are a highly favorable focus for innovative breast cancer treatments. This review presents an extensive overview of the correlation between TAMs and breast cancer development as well as its role in the tumor microenvironment (TME) shedding light on their impact on tumor advancement and immune evasion mechanisms. Notably, our study provides an innovative approach to employing nanomedicine approaches for targeted TAM therapy in breast cancer, providing an in-depth overview of recent advances in this emerging field.
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Affiliation(s)
- Ghazala Muteeb
- Department of Nursing, College of Applied Medical Sciences, King Faisal University, Al-Ahsa, 31982, Saudi Arabia
| | - Doaa S.R. Khafaga
- Health Sector, Faculty of Science, Galala University, New Galala City, 43511, Suez, Egypt
| | - Manar T. El-Morsy
- Biotechnology Department, Faculty of Science, Cairo University, 12613, Giza, Egypt
| | - Mohd Farhan
- Department of Chemistry, College of Science, King Faisal University, Al Ahsa, 31982, Saudi Arabia
- Department of Basic Sciences, Preparatory Year Deanship, King Faisal University, Al Ahsa, 31982, Saudi Arabia
| | - Mohammad Aatif
- Department of Public Health, College of Applied Medical Sciences, King Faisal University, Al-Ahsa, 31982, Saudi Arabia
| | - Mohamed Hosney
- Zoology Department, Faculty of Science, Cairo University, 12613, Giza, Egypt
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3
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Xu J, Liu K, Gong Z, Liu J, Lin H, Lin B, Li W, Zhu M, Li M. IL-6/STAT3 signaling pathway induces prostate apoptosis response protein-4(PAR-4) to stimulate malignant behaviors of hepatocellular carcinoma cells. Ann Hepatol 2024; 29:101538. [PMID: 39147129 DOI: 10.1016/j.aohep.2024.101538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 03/11/2024] [Accepted: 03/29/2024] [Indexed: 08/17/2024]
Abstract
INTRODUCTION AND OBJECTIVES Prostate apoptosis response protein-4 (PAR-4) is considered a tumor suppressor. However, the role of PAR-4 in hepatocellular carcinoma (HCC) has rarely been reported. The study explores the role of PAR-4 in the malignant behaviors of HCC cells. MATERIALS AND METHODS TCGA database was applied to analyze the expression of PAR-4 in HCC. Evaluated PAR-4 relationship with clinical parameters and prognosis by tissue microarray; expression of STAT3, p-STAT3, Src and Ras was detected by Western blotting or laser confocal microscopy. Cell scratch and flow cytometry assays were used to observe IL-6 regulation of the malignant behaviors of HCC cells. The tumorigenic potential of HCC cells in vivo was evaluated in a nude mouse tumor model. RESULTS Analysis indicated that the expression of PAR-4 in HCC tissues was significantly higher than that in normal liver tissues; and PAR-4 interacted with STAT3. KEGG analysis showed that PAR-4 plays a role in the Janus kinase (JAK)/STAT signaling pathway. The positive expression rate of PAR-4 in HCC tissues was significantly higher than that in adjacent tissues. Positive correlation between IL-6 and PAR-4 expression in the HCC tissues. Exogenous IL-6 significantly promoted the proliferation and migration of HCC cells and up-regulated the expression of PAR-4 and p-STAT3 in HCC cells. Interference of the expression of PAR-4 could reduce the malignant behaviors of HCC cells and inhibit tumorigenesis in a nude mouse tumor model. CONCLUSIONS PAR-4 expression is positively correlated with HCC; PAR-4 promotes malignant behavior of HCC cells mediated by the IL-6/STAT3 signaling pathway.
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Affiliation(s)
- Junnv Xu
- Hainan Provincial Key Laboratory of Carcinogenesis and Intervention, Hainan Medical University, Hiakou 571199, Hainan Province, PR China; Department of Medical Oncology, The Second Affiliated Hospital, Hainan Medical University, Haikou 570311,Hainan Province, PR China
| | - Kun Liu
- Hainan Provincial Key Laboratory of Carcinogenesis and Intervention, Hainan Medical University, Hiakou 571199, Hainan Province, PR China
| | - Zhixun Gong
- Hainan Provincial Key Laboratory of Carcinogenesis and Intervention, Hainan Medical University, Hiakou 571199, Hainan Province, PR China
| | - Jinchen Liu
- Hainan Provincial Key Laboratory of Carcinogenesis and Intervention, Hainan Medical University, Hiakou 571199, Hainan Province, PR China
| | - Haifeng Lin
- Department of Medical Oncology, The Second Affiliated Hospital, Hainan Medical University, Haikou 570311,Hainan Province, PR China
| | - Bo Lin
- Hainan Provincial Key Laboratory of Carcinogenesis and Intervention, Hainan Medical University, Hiakou 571199, Hainan Province, PR China
| | - Wei Li
- Hainan Provincial Key Laboratory of Carcinogenesis and Intervention, Hainan Medical University, Hiakou 571199, Hainan Province, PR China
| | - Mingyue Zhu
- Hainan Provincial Key Laboratory of Carcinogenesis and Intervention, Hainan Medical University, Hiakou 571199, Hainan Province, PR China.
| | - Mengsen Li
- Hainan Provincial Key Laboratory of Carcinogenesis and Intervention, Hainan Medical University, Hiakou 571199, Hainan Province, PR China; Department of Medical Oncology, The Second Affiliated Hospital, Hainan Medical University, Haikou 570311,Hainan Province, PR China; Institution of Tumor, Hainan Medical University, Hiakou 570102, Hainan Province, PR China.
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4
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Dai JJ, Fu YY, Zhong XQ, Cen W, Ye MF, Chen XH, Pan YF, Ye LC. Identification of Senescence-Related Subtypes, the Development of a Prognosis Model, and Characterization of Immune Infiltration and Gut Microbiota in Colorectal Cancer. Front Med (Lausanne) 2022; 9:916565. [PMID: 35721059 PMCID: PMC9198838 DOI: 10.3389/fmed.2022.916565] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Accepted: 05/05/2022] [Indexed: 12/25/2022] Open
Abstract
Cellular senescence is associated with tumorigenesis, and the subtype and prognostic signatures of senescence-related genes (SRGs) in the tumor microenvironment (TME) and gut microbiota have not been fully determined. Analysis of 91 SRGs obtained from the GSEA and MSigDB, and mRNA sequencing of genes in the Gene Expression Omnibus (GEO) and The Cancer Genome Atlas (TCGA) databases enabled the identification of two distinct molecular types of colorectal cancer (CRC). Patient samples were clustered into two subtypes, with Kaplan-Meier survival analyses showing significant differences in patient survival between the two subtypes. Cluster C2 was associated with patient clinicopathological features, high immune score, high abundance of immune infiltrating cells and somewhat high abundance of bacteria. A risk model based on eight SRGs showed that a low risk score was characterized by inhibition of immune activity and was indicative of better prognosis in patients with CRC. In combination with clinical characteristics, risk score was found to be an independent prognostic predictor of survival in patients with CRC. In conclusion, the present study showed that senescence-related subtypes and a signature consisting of eight SRGs were associated with CRC patient prognosis, as well as with immune cell infiltration and gut microbiota. These findings may enable better prediction of CRC patient prognosis and facilitate individualized treatments.
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Affiliation(s)
- Ju-Ji Dai
- Department of Colorectal and Anal Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yang-Yang Fu
- Division of Pulmonary Medicine, Key Laboratory of Heart and Lung, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xi-Qiang Zhong
- Department of Spinal Surgery, The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Wei Cen
- Department of Colorectal and Anal Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Mao-Fei Ye
- Department of Urology, Shanghai Baoshan Luodian Hospital, Shanghai, China
| | - Xi-Han Chen
- Department of Gastroenterology, The People's Hospital of Pingyang, Wenzhou, China
| | - Yi-Fei Pan
- Department of Colorectal and Anal Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Le-Chi Ye
- Department of Colorectal and Anal Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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5
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Lee YH, Chen YY, Yeh YL, Wang YJ, Chen RJ. Stilbene Compounds Inhibit Tumor Growth by the Induction of Cellular Senescence and the Inhibition of Telomerase Activity. Int J Mol Sci 2019; 20:ijms20112716. [PMID: 31159515 PMCID: PMC6600253 DOI: 10.3390/ijms20112716] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 05/30/2019] [Accepted: 05/31/2019] [Indexed: 12/17/2022] Open
Abstract
Cellular senescence is a state of cell cycle arrest characterized by a distinct morphology, gene expression pattern, and secretory phenotype. It can be triggered by multiple mechanisms, including those involved in telomere shortening, the accumulation of DNA damage, epigenetic pathways, and the senescence-associated secretory phenotype (SASP), and so on. In current cancer therapy, cellular senescence has emerged as a potent tumor suppression mechanism that restrains proliferation in cells at risk for malignant transformation. Therefore, compounds that stimulate the growth inhibition effects of senescence while limiting its detrimental effects are believed to have great clinical potential. In this review article, we first review the current knowledge of the pro- and antitumorigeneic functions of senescence and summarize the key roles of telomerase in the regulation of senescence in tumors. Second, we review the current literature regarding the anticancer effects of stilbene compounds that are mediated by the targeting of telomerase and cell senescence. Finally, we provide future perspectives on the clinical utilization of stilbene compounds, especially resveratrol and pterostilbene, as novel cancer therapeutic remedies. We conclude and propose that stilbene compounds may induce senescence and may potentially be used as the therapeutic or adjuvant agents for cancers with high telomerase activity.
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Affiliation(s)
- Yu-Hsuan Lee
- Department of Food Safety/Hygiene and Risk Management, College of Medicine, National Cheng Kung University, Tainan 70428, Taiwan.
| | - Yu-Ying Chen
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan 70428, Taiwan.
| | - Ya-Ling Yeh
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan 70428, Taiwan.
| | - Ying-Jan Wang
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan 70428, Taiwan.
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan.
| | - Rong-Jane Chen
- Department of Food Safety/Hygiene and Risk Management, College of Medicine, National Cheng Kung University, Tainan 70428, Taiwan.
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6
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Subburayan K, Thayyullathil F, Pallichankandy S, Rahman A, Galadari S. Par-4-dependent p53 up-regulation plays a critical role in thymoquinone-induced cellular senescence in human malignant glioma cells. Cancer Lett 2018; 426:80-97. [PMID: 29656006 DOI: 10.1016/j.canlet.2018.04.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Revised: 04/08/2018] [Accepted: 04/09/2018] [Indexed: 12/18/2022]
Abstract
Thymoquinone (TQ), the predominant bioactive constituent present in black cumin (Nigella sativa), exerts tumor suppressive activity against a wide variety of cancer cells. Cellular senescence, characterized by stable and long term loss of proliferative capacity, acts as a potent tumor suppressive mechanism. Here, we provide evidence for the first time that TQ suppresses growth of glioma cells by potentially inducing the expression of prostate apoptosis response-4 (Par-4) tumor suppressor protein. In turn, TQ-induced Par-4 expression triggers cellular senescence, as evidenced by increasing cellular size, β-galactosidase staining, G1 phase arrest, and increased expression of senescence markers such as p53, p21, Rb, and decreased expression of lamin B1, cyclin E and cyclin depended kinase-2 (CDK-2). Further, overexpression of Par-4 significantly increases the expression of p53 and its downstream target p21, and increases β-galactosidase positive cells, while siRNA/shRNA mediated-knockdown of Par-4 reverses the TQ-induced effects. Altogether, we describe a novel mechanism of cross talk between Par-4 and p53, that plays a critical role in TQ-induced senescence in human malignant glioma cells.
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Affiliation(s)
- Karthikeyan Subburayan
- Cell Death Signaling Laboratory, Division of Science (Biology), Experimental Research Building, New York University Abu Dhabi, P.O. Box 129188, Saadiyat Island Campus, Abu Dhabi, United Arab Emirates.
| | - Faisal Thayyullathil
- Cell Death Signaling Laboratory, Division of Science (Biology), Experimental Research Building, New York University Abu Dhabi, P.O. Box 129188, Saadiyat Island Campus, Abu Dhabi, United Arab Emirates.
| | - Siraj Pallichankandy
- Cell Death Signaling Laboratory, Division of Science (Biology), Experimental Research Building, New York University Abu Dhabi, P.O. Box 129188, Saadiyat Island Campus, Abu Dhabi, United Arab Emirates.
| | - Anees Rahman
- Cell Death Signaling Laboratory, Division of Science (Biology), Experimental Research Building, New York University Abu Dhabi, P.O. Box 129188, Saadiyat Island Campus, Abu Dhabi, United Arab Emirates.
| | - Sehamuddin Galadari
- Cell Death Signaling Laboratory, Division of Science (Biology), Experimental Research Building, New York University Abu Dhabi, P.O. Box 129188, Saadiyat Island Campus, Abu Dhabi, United Arab Emirates.
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7
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Damrauer JS, Phelps SN, Amuchastegui K, Lupo R, Mabe NW, Walens A, Kroger BR, Alvarez JV. Foxo-dependent Par-4 Upregulation Prevents Long-term Survival of Residual Cells Following PI3K-Akt Inhibition. Mol Cancer Res 2018; 16:599-609. [PMID: 29330285 DOI: 10.1158/1541-7786.mcr-17-0492] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 11/17/2017] [Accepted: 12/21/2017] [Indexed: 01/21/2023]
Abstract
Tumor recurrence is a leading cause of death and is thought to arise from a population of residual cells that survive treatment. These residual cancer cells can persist, locally or at distant sites, for years or decades. Therefore, understanding the pathways that regulate residual cancer cell survival may suggest opportunities for targeting these cells to prevent recurrence. Previously, it was observed that the proapoptotic protein (PAWR/Par-4) negatively regulates residual cell survival and recurrence in mice and humans. However, the mechanistic underpinnings on how Par-4 expression is regulated are unclear. Here, it is demonstrated that Par-4 is transcriptionally upregulated following treatment with multiple drugs targeting the PI3K-Akt-mTOR signaling pathway, and identify the Forkhead family of transcription factors as mediators of this upregulation. Mechanistically, Foxo3a directly binds to the Par-4 promoter and activates its transcription following inhibition of the PI3K-Akt pathway. This Foxo-dependent Par-4 upregulation limits the long-term survival of residual cells following treatment with therapeutics that target the PI3K-Akt pathway. Taken together, these results indicate that residual breast cancer tumor cell survival and recurrence requires circumventing Foxo-driven Par-4 upregulation and suggest that approaches to enforce Par-4 expression may prevent residual cell survival and recurrence. Mol Cancer Res; 16(4); 599-609. ©2018 AACR.
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Affiliation(s)
- Jeffrey S Damrauer
- Department of Pharmacology and Cancer Biology, Duke University, Durham, North Carolina
| | - Stephanie N Phelps
- Department of Pharmacology and Cancer Biology, Duke University, Durham, North Carolina
| | - Katie Amuchastegui
- Department of Pharmacology and Cancer Biology, Duke University, Durham, North Carolina
| | - Ryan Lupo
- Department of Pharmacology and Cancer Biology, Duke University, Durham, North Carolina
| | - Nathaniel W Mabe
- Department of Pharmacology and Cancer Biology, Duke University, Durham, North Carolina
| | - Andrea Walens
- Department of Pharmacology and Cancer Biology, Duke University, Durham, North Carolina
| | - Benjamin R Kroger
- Department of Pharmacology and Cancer Biology, Duke University, Durham, North Carolina
| | - James V Alvarez
- Department of Pharmacology and Cancer Biology, Duke University, Durham, North Carolina.
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8
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Zou M, Wang J, Gao J, Han H, Fang Y. Phosphoproteomic analysis of the antitumor effects of ginsenoside Rg3 in human breast cancer cells. Oncol Lett 2017; 15:2889-2898. [PMID: 29435015 PMCID: PMC5778838 DOI: 10.3892/ol.2017.7654] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 11/10/2017] [Indexed: 12/17/2022] Open
Abstract
The incidence of breast cancer has been increasing in China and the age of breast cancer onset is earlier compared with Western countries. Compounds commonly used in Traditional Chinese Medicine (TCM) are an important source of anticancer drugs. Ginseng is one of the most common medicines used in TCM. Ginsenosides, which are saponins found in the ginseng plant, are the major active components responsible for the chemopreventive effects of ginseng in cancer. However, the mechanisms by which ginsenosides exert their anticancer effects remain elusive. The current study combined tandem mass tag (TMT)-based quantification with titanium dioxide-based phosphopeptide enrichment to quantitatively analyze the changes in phosphoproteomes in breast cancer MDA-MB-231 cells that occur following treatment with the ginsenoside Rg3. A total of 5,140 phosphorylation sites on 2,041 phosphoproteins were quantified and it was demonstrated that the phosphorylation status of 13 sites were altered in MDA-MB-231 cells following treatment with Rg3. The perturbed phosphoproteins were: Cleavage and polyadenylation specificity factor subunit 7, elongation factor 2 (EEF2), HIRA-interacting protein 3, melanoma-associated antigen D2, myosin phosphatase Rho-interacting protein, probable E3 ubiquitin-protein ligase MYCBP2, PRKC apoptosis WT1 regulator protein, protein phosphatase 1 regulatory subunit 12A, E3 SUMO-protein ligase RanBP2, Septin-9, thymopoietin, and E3 UFM1-protein ligase 1. Western blotting confirmed that Rg3 increased the phosphorylation of EEF2 on Thr57 but did not alter the protein expression of EEF2 in MDA-MB-231 and HCC1143 cells. These ginsenoside Rg3-regulated proteins are involved in various biological processes, including protein synthesis, cell division and the inhibition of nuclear factor-κB signaling. The results of the present study revealed that Rg3 exerts its anticancer effects via a combination of different signaling pathways.
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Affiliation(s)
- Mingjin Zou
- Department of Clinical Laboratory, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Jing Wang
- Department of Breast Surgical Oncology, National Cancer Center and Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, P.R. China
| | - Jidong Gao
- Department of Breast Surgical Oncology, National Cancer Center and Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, P.R. China
| | - Hui Han
- Department of Infection Control, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Yi Fang
- Department of Breast Surgical Oncology, National Cancer Center and Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, P.R. China
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9
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Lu D, Tang L, Zhuang Y, Zhao P. miR-17-3P regulates the proliferation and survival of colon cancer cells by targeting Par4. Mol Med Rep 2017; 17:618-623. [PMID: 29115593 DOI: 10.3892/mmr.2017.7863] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 09/01/2017] [Indexed: 11/05/2022] Open
Abstract
Colorectal cancer (CRC) is a common malignancy worldwide. However, the pathogenesis by which CRC progression occurs remains to be elucidated. The present study investigated the role of miRNA (miR)‑17‑3P in the regulation of CRC cell survival. Firstly, miR‑17‑3P expression was aberrantly upregulated in human CRC tumor tissues compared with controls. Further results demonstrated that the proliferation capacity of human CRC SW480 and LoVo cells was significantly increased by an miR‑17‑3P specific mimic, and was inhibited by miR‑17‑3P silencing. Conversely, the apoptosis of human CRC cells was remarkably decreased by miR‑17‑3P mimic, and enhanced by miR‑17‑3P suppression compared with control. Additionally, it was observed that there was a potential binding site of miR‑17‑3P on the 3'‑untranslated region of Prostate apoptosis responde‑4 (Par4) and miR‑17‑3P may directly target Par4 mRNA. In human CRC cells, an miR‑17‑3P inhibitor significantly upregulated Par 4 expression, however the miR‑17‑3P mimic reduced Par4expression. Furthermore, Par4 expression exhibited an inhibitory effect on the proliferation of CRC cells transfected with miR‑17‑3P mimic, and exhibited a promoting role in the repressed apoptosis by miR‑17‑3P mimic. Inconclusion, the results of the present study demonstrated that miR‑17‑3P is important in CRC cell survival by targeting Par4, indicating a novel finding regarding human CRC progression.
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Affiliation(s)
- Debao Lu
- Department of General Surgery, Tianjin TEDA Hospital, Tianjin 300457, P.R. China
| | - Liang Tang
- Department of Colorectal Tumor, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300202, P.R. China
| | - Yan Zhuang
- Department of Colorectal Tumor, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300202, P.R. China
| | - Peng Zhao
- Department of Colorectal Tumor, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300202, P.R. China
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10
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Liu F, Liu S, Ai F, Zhang D, Xiao Z, Nie X, Fu Y. miR-107 Promotes Proliferation and Inhibits Apoptosis of Colon Cancer Cells by Targeting Prostate Apoptosis Response-4 (Par4). Oncol Res 2016; 25:967-974. [PMID: 27938501 PMCID: PMC7841080 DOI: 10.3727/096504016x14803476672380] [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] [Indexed: 12/18/2022] Open
Abstract
Colorectal cancer (CRC) is one of the most common malignancies in the world, with a high incidence and a high mortality. However, the pathogenesis of CRC carcinogenesis is still unexplored. In this study, we investigated the role of miR-107 in the regulation of CRC cell proliferation and apoptosis. First, the expression of miR-107 was observed to be aberrantly increased in human CRC tumor tissues and cell lines when compared to the colonic control tissues and colon epithelial cells. Further study showed that the proliferative and apoptotic capacities of human CRC SW480 and LoVo cells were aberrantly regulated by miR-107. The proliferation of SW480 and LoVo cells was remarkably enhanced by the miR-107 mimic but suppressed by the miR-107 inhibitor when compared to the negative control. On the contrary, the apoptotic rate of both SW480 and LoVo cells was significantly inhibited by miR-107 overexpression but increased by miR-107 inhibition. In addition, we identified prostate apoptosis response-4 (Par4) as a direct target of miR-107 with a potential binding site on the 3'-UTR of mRNA, as evaluated by bioinformatics prediction and luciferase reporter assay. Par4 expression levels were significantly inhibited by the miR-107 mimic but upregulated by the miR-107 inhibitor in both SW480 and LoVo cells. Compared to the control, the increase in Par4 expression significantly inhibited the induction role of miR-107 in the proliferation of SW480 and LoVo cells, and the apoptotic rate of cells repressed by the miR-107 mimic was also reversed by Par4 overexpression. In summary, our results demonstrated that miR-107 exerts a positive role in the survival of CRC cells by directly targeting Par4. This might reveal a novel understanding about human CRC pathogenesis.
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