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Qin H, Zhou Y, Liu H, Yuan Y, Guo Q, Yuan M, Xi T, Zhang Y. 1-Benzylimidazole attenuates the stemness of breast cancer cells through partially targeting CYP4Z1. ENVIRONMENTAL TOXICOLOGY 2024; 39:1505-1520. [PMID: 37994574 DOI: 10.1002/tox.24050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 11/03/2023] [Accepted: 11/09/2023] [Indexed: 11/24/2023]
Abstract
Cytochrome P450 (CYP) 4Z1 (CYP4Z1) has recently garnered much interest as its expression predicts a poor prognosis and as a oncogene in breast cancer, and overexpressed in other many cancers. We previously showed that CYP4Z1 acts as a promoter of cancer stem cells (CSCs) to facilitate the occurrence and development of breast cancer. Here, RNA sequencing found that 1-benzylimidazole (1-Benzy) held a preferable correlation with breast cancer and suppressed the expression of CSC makers. Further functional experiments, including mammary spheroid formation, wound-healing, transwell-invasion, detection of tumor initiation, and metastatic ability, showed that 1-Benzy suppressed the stemness and metastasis of breast cancer cells. Additionally, we further demonstrated that CYP4Z1 is necessary for 1-Benzy-mediated suppression on breast cancer stemness and 1-Benzy exerted a weaker effect in breast cancer cells with CYP4Z1 knockdown. Taken together, our data suggest that 1-Benzy might be a potential drug suppressing breast cancer stemness via targeting CYP4Z1.
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Affiliation(s)
- Hai Qin
- Department of Clinical Laboratory, Beijing Jishuitan Hospital Guizhou Hospital, Guiyang City, Guizhou, China
| | - Yi Zhou
- School of Life Science and Technology, School of Engineering, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Hai Liu
- School of Life Science and Technology, School of Engineering, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Yaqin Yuan
- Microbiological Laboratory, Guizhou Center For Medical Device Testing, Guiyang, Guizhou, China
| | - Qianqian Guo
- Department of Pharmacy, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, People's Republic of China
| | - Manqin Yuan
- Department of Clinical Laboratory Medicine, Guizhou Medical University, Guiyang, Guizhou, China
| | - Tao Xi
- School of Life Science and Technology, School of Engineering, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing, People's Republic of China
| | - Yujie Zhang
- Department of Clinical Laboratory, Beijing Jishuitan Hospital Guizhou Hospital, Guiyang City, Guizhou, China
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Ni KD, Liu JY. The Functions of Cytochrome P450 ω-hydroxylases and the Associated Eicosanoids in Inflammation-Related Diseases. Front Pharmacol 2021; 12:716801. [PMID: 34594219 PMCID: PMC8476763 DOI: 10.3389/fphar.2021.716801] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Accepted: 09/01/2021] [Indexed: 12/17/2022] Open
Abstract
The cytochrome P450 (CYP) ω-hydroxylases are a subfamily of CYP enzymes. While CYPs are the main metabolic enzymes that mediate the oxidation reactions of many endogenous and exogenous compounds in the human body, CYP ω-hydroxylases mediate the metabolism of multiple fatty acids and their metabolites via the addition of a hydroxyl group to the ω- or (ω-1)-C atom of the substrates. The substrates of CYP ω-hydroxylases include but not limited to arachidonic acid, docosahexaenoic acid, eicosapentaenoic acid, epoxyeicosatrienoic acids, leukotrienes, and prostaglandins. The CYP ω-hydroxylases-mediated metabolites, such as 20-hyroxyleicosatrienoic acid (20-HETE), 19-HETE, 20-hydroxyl leukotriene B4 (20-OH-LTB4), and many ω-hydroxylated prostaglandins, have pleiotropic effects in inflammation and many inflammation-associated diseases. Here we reviewed the classification, tissue distribution of CYP ω-hydroxylases and the role of their hydroxylated metabolites in inflammation-associated diseases. We described up-regulation of CYP ω-hydroxylases may be a pathogenic mechanism of many inflammation-associated diseases and thus CYP ω-hydroxylases may be a therapeutic target for these diseases. CYP ω-hydroxylases-mediated eicosanods play important roles in inflammation as pro-inflammatory or anti-inflammatory mediators, participating in the process stimulated by cytokines and/or the process stimulating the production of multiple cytokines. However, most previous studies focused on 20-HETE,and further studies are needed for the function and mechanisms of other CYP ω-hydroxylases-mediated eicosanoids. We believe that our studies of CYP ω-hydroxylases and their associated eicosanoids will advance the translational and clinal use of CYP ω-hydroxylases inhibitors and activators in many diseases.
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Affiliation(s)
- Kai-Di Ni
- Center for Novel Target and Therapeutic Intervention, Institute of Life Sciences, Chongqing Medical University, Chongqing, China
| | - Jun-Yan Liu
- Center for Novel Target and Therapeutic Intervention, Institute of Life Sciences, Chongqing Medical University, Chongqing, China
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3
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Liu Y, Zhao Q, Xi T, Zheng L, Li X. MicroRNA-9 as a paradoxical but critical regulator of cancer metastasis: Implications in personalized medicine. Genes Dis 2021; 8:759-768. [PMID: 34522706 PMCID: PMC8427239 DOI: 10.1016/j.gendis.2020.10.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 09/27/2020] [Accepted: 10/18/2020] [Indexed: 12/24/2022] Open
Abstract
Metastasis, is a development of secondary tumor growths at a distance from the primary site, and closely related to poor prognosis and mortality. However, there is still no effective treatment for metastatic cancer. Therefore, there is an urgent need to find an effective therapy for cancer metastasis. Plenty of evidence indicates that miR-9 can function as a promoter or suppressor in cancer metastasis and coordinate multistep of metastatic process. In this review, we summarize the different roles of miR-9 with the corresponding molecular mechanisms in metastasis of twelve common cancers and the multiple mechanisms underlying miR-9-mediated regulation of metastasis, benefiting the further research of miR-9 and metastasis, and hoping to bridge it with clinical applications.
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Affiliation(s)
- Yichen Liu
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu Province, 210023, PR China.,School of Life Science and Technology, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, 639 Longmian Road, Nanjing, Jiangsu Province, 211198, PR China
| | - Qiong Zhao
- School of Life Science and Technology, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, 639 Longmian Road, Nanjing, Jiangsu Province, 211198, PR China
| | - Tao Xi
- School of Life Science and Technology, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, 639 Longmian Road, Nanjing, Jiangsu Province, 211198, PR China
| | - Lufeng Zheng
- School of Life Science and Technology, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, 639 Longmian Road, Nanjing, Jiangsu Province, 211198, PR China
| | - Xiaoman Li
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu Province, 210023, PR China
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Luo B, Yan D, Yan H, Yuan J. Cytochrome P450: Implications for human breast cancer. Oncol Lett 2021; 22:548. [PMID: 34093769 PMCID: PMC8170261 DOI: 10.3892/ol.2021.12809] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 04/21/2021] [Indexed: 12/13/2022] Open
Abstract
The treatment options for breast cancer include endocrine therapy, targeted therapy and chemotherapy. However, some patients with triple-negative breast cancer cannot benefit from these methods. Therefore, novel therapeutic targets should be developed. The cytochrome P450 enzyme (CYP) is a crucial metabolic oxidase, which is involved in the metabolism of endogenous and exogenous substances in the human body. Some products undergoing the metabolic pathway of the CYP enzyme, such as hydroxylated polychlorinated biphenyls and 4-chlorobiphenyl, are toxic to humans and are considered to be potential carcinogens. As a class of multi-gene superfamily enzymes, the subtypes of CYPs are selectively expressed in breast cancer tissues, especially in the basal-like type. In addition, CYPs are essential for the activation or inactivation of anticancer drugs. The association between CYP expression and cancer risk, tumorigenesis, progression, metastasis and prognosis has been widely reported in basic and clinical studies. The present review describes the current findings regarding the importance of exploring metabolic pathways of CYPs and gene polymorphisms for the development of vital therapeutic targets for breast cancer.
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Affiliation(s)
- Bin Luo
- Department of Pathology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Dandan Yan
- Department of Pathology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Honglin Yan
- Department of Pathology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Jingping Yuan
- Department of Pathology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
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Li X, Zeng Z, Wang J, Wu Y, Chen W, Zheng L, Xi T, Wang A, Lu Y. MicroRNA-9 and breast cancer. Biomed Pharmacother 2019; 122:109687. [PMID: 31918267 DOI: 10.1016/j.biopha.2019.109687] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 11/14/2019] [Accepted: 11/16/2019] [Indexed: 12/21/2022] Open
Abstract
Breast cancer is the most common cancer in women worldwide and seriously impairs patients' physical and mental health. Its incidence has been predicted to rise further. Mounting evidence indicates that microRNAs (miRNAs) play key roles in tumorigenesis and development. It is worth noting that miR-9 exerts critical functions in the initiation and progression of breast cancer, and the present research displays opposite roles of miR-9 in breast cancer. This article mainly reviews the roles of miR-9 in breast cancer progression.
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Affiliation(s)
- Xiaoman Li
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Zhu Zeng
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Jiaer Wang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Yuanyuan Wu
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Wenxing Chen
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Lufeng Zheng
- School of Life Science and Technology, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing 210009, China
| | - Tao Xi
- School of Life Science and Technology, Jiangsu Key Laboratory of Carcinogenesis and Intervention, China Pharmaceutical University, Nanjing 210009, China
| | - Aiyun Wang
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China.
| | - Yin Lu
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China.
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Guo W, Wei B, Cheng T, Xu X, Ruan F, Xiang M. The Na+/K+ ATPase Inhibitor Ouabain Attenuates Stemness and Chemoresistance of Osteosarcoma Cells. Med Sci Monit 2019; 25:9426-9434. [PMID: 31822650 PMCID: PMC6918806 DOI: 10.12659/msm.919266] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Background The purpose of this study was to explore the effects of the Na+/K+ ATPase inhibitor ouabain in regulating osteosarcoma (OS) cell stemness. Material/Methods Western blot, qPCR, sphere-forming analysis, DNA methylation analysis, and Ca2+ concentration detection were performed to evaluate the stem-like traits of cells and ouabain-induced effects and related mechanisms on OS cell stemness. Cell viability assessment was performed to evaluate the effect of ouabain on OS cell chemosensitivity. Results Ouabain reduced the ALDH1 activity, the expression of critical stemness regulators, sphere size and number, and migration, invasion, and adhesion ability, but had little effects on cell viability. Additionally, the intracellular Ca2+ concentration and methylation level of the critical stemness regulators were higher in OS cells than in spheres formed by OS cells. Mechanistic studies revealed that ouabain leads to DNA methylation of stemness markers through increasing intracellular Ca2+ concentration. Notably, inhibition of Ca2+ channel or DNA methylation rescued the inhibition of ouabain on OS cell stemness. Additionally, ouabain enhances cisplatin sensitivity of OS cells, which is involved in Ca2+ channel and DNA methylation. Conclusions This work provides a potential compound for treating OS patients, especially OS patients with chemoresistance.
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Affiliation(s)
- Weixiong Guo
- Department of Orthopedics, The Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China (mainland)
| | - Bo Wei
- Department of Orthopedics, The Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China (mainland)
| | - Tingting Cheng
- Department of Cardiovascular, The Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China (mainland)
| | - Xiaotao Xu
- Department of Operation Room, The Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China (mainland)
| | - Feiling Ruan
- Department of Operation Room, The Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China (mainland)
| | - Min Xiang
- Department of Orthopedics, Third Affiliated Hospital of Guangdong Medical University, Zhanjiang, China (mainland)
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PPTS Inhibits the TGF- β1-Induced Epithelial-Mesenchymal Transition in Human Colorectal Cancer SW480 Cells. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 2019:2683534. [PMID: 31662772 PMCID: PMC6778905 DOI: 10.1155/2019/2683534] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Revised: 08/11/2019] [Accepted: 08/26/2019] [Indexed: 12/11/2022]
Abstract
The current study investigates the inhibitory effects of Pulsatilla pentacyclic triterpenoid saponins extract (PPTS) on epithelial-mesenchymal transition (EMT) triggered by the transforming growth factor-β1 (TGF-β1) in human colorectal cancer SW480 cell line, further illustrates the possible mechanism of PPTS inhibition of growth and invasion from the perspective of EMT, and provides new theoretical support for the treatment of tumor by Chinese medicine. The SW480 cells were treated in groups: blank control, TGF-β1 (10 ng/mL), and varying concentrations of PPTS cotreated with TGF-β1-induced (10 ng/mL) groups. CCK8 was used to detect cell viability; transwell was applied to detect invasion ability, cell migration ability was also determined, ELISA and RT-qPCR were utilized for the determination of CYP3A, CYP2C9, CYP2C19, N-cadherin, and MMP-9 expression. Flow cytometry detection was applied to detect cell cycle and apoptosis. The results obtained have shown that PPTS can significantly inhibit the invasion and migration of tumors in SW480 cells and can also block the S phase in the cell cycle but may produce cytotoxicity in higher doses. The present research work provides substantial evidence that PPTS has a significant inhibitory effect on TGF-β1-induced EMT in SW480 cells and it also promotes apoptosis.
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Li D, Tolleson WH, Yu D, Chen S, Guo L, Xiao W, Tong W, Ning B. Regulation of cytochrome P450 expression by microRNAs and long noncoding RNAs: Epigenetic mechanisms in environmental toxicology and carcinogenesis. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART C, ENVIRONMENTAL CARCINOGENESIS & ECOTOXICOLOGY REVIEWS 2019; 37:180-214. [PMID: 31305208 PMCID: PMC6737535 DOI: 10.1080/10590501.2019.1639481] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Environmental exposures to hazardous chemicals are associated with a variety of human diseases and disorders, including cancers. Phase I metabolic activation and detoxification reactions catalyzed by cytochrome P450 enzymes (CYPs) affect the toxicities of many xenobiotic compounds. Proper regulation of CYP expression influences their biological effects. Noncoding RNAs (ncRNAs) are involved in regulating CYP expression, and ncRNA expression is regulated in response to environmental chemicals. The mechanistic interactions between ncRNAs and CYPs associated with the toxicity and carcinogenicity of environmental chemicals are described in this review, focusing on microRNA-dependent CYP regulation. The role of long noncoding RNAs in regulating CYP expression is also presented and new avenues of research concerning this regulatory mechanism are described.
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Affiliation(s)
- Dongying Li
- a National Center for Toxicological Research (NCTR), U.S. Food and Drug Administration (FDA) , Jefferson , AR , USA
| | - William H Tolleson
- a National Center for Toxicological Research (NCTR), U.S. Food and Drug Administration (FDA) , Jefferson , AR , USA
| | - Dianke Yu
- a National Center for Toxicological Research (NCTR), U.S. Food and Drug Administration (FDA) , Jefferson , AR , USA
| | - Si Chen
- a National Center for Toxicological Research (NCTR), U.S. Food and Drug Administration (FDA) , Jefferson , AR , USA
| | - Lei Guo
- a National Center for Toxicological Research (NCTR), U.S. Food and Drug Administration (FDA) , Jefferson , AR , USA
| | - Wenming Xiao
- a National Center for Toxicological Research (NCTR), U.S. Food and Drug Administration (FDA) , Jefferson , AR , USA
| | - Weida Tong
- a National Center for Toxicological Research (NCTR), U.S. Food and Drug Administration (FDA) , Jefferson , AR , USA
| | - Baitang Ning
- a National Center for Toxicological Research (NCTR), U.S. Food and Drug Administration (FDA) , Jefferson , AR , USA
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Loginov VI, Filippova EA, Kurevlev SV, Fridman MV, Burdennyy AM, Braga EA. Suppressive and Hypermethylated MicroRNAs in the Pathogenesis of Breast Cancer. RUSS J GENET+ 2018. [DOI: 10.1134/s1022795418070086] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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10
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Six2 is negatively correlated with good prognosis and decreases 5-FU sensitivity via suppressing E-cadherin expression in hepatocellular carcinoma cells. Biomed Pharmacother 2018; 104:204-210. [PMID: 29772441 DOI: 10.1016/j.biopha.2018.05.032] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 05/08/2018] [Accepted: 05/08/2018] [Indexed: 11/20/2022] Open
Abstract
This work aims to study the roles and related mechanisms of six2 in 5-FU sensitivity of hepatocellular carcinoma (HCC) cells. KM-Plotter analysis showed that HCC patients with higher six2 expression levels had shorter overall survival. Six2 expression was higher in clinical HCC tissues than in normal tissues, and was negatively correlated with E-cadherin expression. Additionally, six2 overexpression decreased the sensitivity of HCC cells to 5-Fu, characterized as attenuating 5-FU-induced cell apoptosis and downregulation of cell viability, and promoted HCC cells stemness. Mechanistically, six2 overexpression repressed E-cadherin expression via stimulating promoter methylation of the E-cadherin. And E-cadherin overexpression rescued six2-induced decrease of 5-FU sensitivity and promotion on HCC cells stemness. Therefore, our results suggest that Six2 is negatively correlated with good prognosis and decreases 5-FU sensitivity via suppressing E-cadherin expression in HCC cells.
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Homeobox B4 inhibits breast cancer cell migration by directly binding to StAR-related lipid transfer domain protein 13. Oncol Lett 2017; 14:4625-4632. [PMID: 29085460 PMCID: PMC5649528 DOI: 10.3892/ol.2017.6825] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 08/03/2017] [Indexed: 11/05/2022] Open
Abstract
The present study aimed to investigate the role of homeobox B4 (HOXB4) in breast cancer. Analysis of The Cancer Genome Atlas data revealed that HOXB4 expression was positively associated with expression of the StAR-related lipid transfer domain protein 13 (STARD13), and the overall survival of patients with breast cancer. Immunohistochemistry and quantitative polymerase chain reaction assays demonstrated that HOXB4 expression was downregulated in breast cancer tissues compared with adjacent normal tissues and was additionally positively associated with STARD13 expression. HOXB4 promoted STARD13 expression in breast cancer cells. Chromatin immunoprecipitation and luciferase reporter assays confirmed that HOXB4 directly bound to the STARD13 promoter. Additionally, HOXB4 inhibited breast cancer cell migration and the epithelial-mesenchymal transition through the STARD13/Ras homolog (Rho) family member A/Rho associated protein kinase signaling pathway. HOXB4 overexpression enhanced the sensitivity of breast cancer cells to doxorubicin and reversed resistance in doxorubicin-resistant cells. Overall, the results indicated that HOXB4 inhibited breast cancer cell migration and enhanced the sensitivity of breast cancer cells to doxorubicin by targeting STARD13.
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Wu WY, Tao SQ, Wang XN, Lobie PE, Wu ZS. XIAP 3'-untranslated region serves as a competitor for HMGA2 by arresting endogenous let-7a-5p in human hepatocellular carcinoma. Tumour Biol 2017; 39:1010428317719578. [PMID: 28691642 DOI: 10.1177/1010428317719578] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
X-linked inhibitor of apoptosis protein functions as an intrinsic regulator of apoptosis by inhibition of caspase activity and possesses a pivotal role in human cancer development and progression. A growing body of literature has demonstrated that microRNAs lead to the degradation or translational repression of messenger RNAs by binding to the non-coding region of messenger RNA at the 3'-untranslated region. Here, we revealed that the expression of HMGA2 is upregulated with X-linked inhibitor of apoptosis protein after transfection of X-linked inhibitor of apoptosis protein 3'-untranslated region in hepatocellular carcinoma cells, suggesting that X-linked inhibitor of apoptosis protein 3'-untranslated region serves as a competitor for microRNAs and prevent the co-targeted messenger RNA, HMGA2, from being suppressed. We further identified that let-7a-5p could bind to both the X-linked inhibitor of apoptosis protein 3'-untranslated region and HMGA2 3'-untranslated region. Moreover, we demonstrated that the forced expression of X-linked inhibitor of apoptosis protein 3'-untranslated region increases the oncogenicity of hepatocellular carcinoma cells in vitro. Cell functional analyses were performed to examine the association of HMGA2 status and X-linked inhibitor of apoptosis protein 3'-untranslated region. We have also measured the functional readout of let-7a-5p and HMGA2, an assay often employed to provide substantial evidence for the effects of X-linked inhibitor of apoptosis protein 3'-untranslated region on hepatocellular carcinoma cells. In general, our findings suggest that X-linked inhibitor of apoptosis protein 3'-untranslated region serves as a competitive endogenous RNA for HMGA2 to activate hepatocellular carcinoma progression by arresting endogenous let-7a-5p.
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Affiliation(s)
- Wen-Yong Wu
- 1 Department of General Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Si-Qi Tao
- 2 Department of Pathology, Anhui Medical University, Hefei, China
| | - Xiao-Nan Wang
- 3 Laboratory of Pathogenic Microbiology and Immunology, Anhui Medical University, Hefei, China
| | - Peter E Lobie
- 4 Cancer Science Institute of Singapore and Department of Pharmacology, National University of Singapore, Singapore, Singapore.,5 Tsinghua Berkeley Shenzhen Institute, Tsinghua University Graduate School at Shenzhen, Shenzhen, China
| | - Zheng-Sheng Wu
- 2 Department of Pathology, Anhui Medical University, Hefei, China
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