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Wang Y, Bai SK, Zhang T, Liao CG. MicroRNA-363-3p inhibits colorectal cancer progression by targeting interferon-induced transmembrane protein 1. World J Gastrointest Oncol 2023; 15:1556-1566. [PMID: 37746648 PMCID: PMC10514722 DOI: 10.4251/wjgo.v15.i9.1556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 07/21/2023] [Accepted: 08/18/2023] [Indexed: 09/13/2023] Open
Abstract
BACKGROUND The molecular mechanisms of colorectal cancer development and progression are far from being elucidated. AIM To investigate the role of microRNA-363-3p (miR-363-3p) in the progression of colorectal cancer. METHODS Real-time polymerase chain reaction was performed to detect miRNA expression in human colorectal cancer tissues and paired normal colorectal tissues. PITA 6 was utilized to predict the targets of miR-363-3p. Dual-luciferase reporter system was used to validate the target of miR-363-3p. Plate colony formation assay and wound-healing assay were performed to evaluate cancer cells' clonogenic survival ability and migration ability, respectively. Cell proliferation was examined by cell counting kit-8 assay. Immunohistochemical staining was used to determine the expression level of interferon-induced transmembrane protein 1 (IFITM1) in colorectal cancer tissues and adjacent tissues. The TCGA and GTEx databases were used to compare the expression levels of IFITM1 mRNA in colorectal cancer tissues and normal colorectal tissues and analyze the correlation between the expression levels of IFITM1 mRNA and overall survival and disease-free survival of patients. A colorectal cancer cell line with a deficiency of IFITM1 was constructed, and the regulation effect of IFITM1 on the clonogenic growth of colorectal cancer cells was clarified. RESULTS MiR-363-3p was decreased in colorectal cancer tissues compared to normal colorectal tissues. IFITM1 was characterized as a direct target of miR-363-3p. Overexpression of miR-363-3p led to decreased clonogenic survival, proliferation, and migration of colorectal cancer cells, which could be reversed by forced IFITM1 expression. CONCLUSION MiR-363-3p can constrain clonogenic survival, proliferation, and migration of colorectal cancer cells via targeting IFITM1.
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Affiliation(s)
- Yun Wang
- Department of Oncology, Tangdu Hospital, Air Force Medical University, Xi’an 710038, Shaanxi Province, China
| | - Shao-Kai Bai
- Department of Oncology, Tangdu Hospital, Air Force Medical University, Xi’an 710038, Shaanxi Province, China
| | - Tao Zhang
- Department of Oncology, Tangdu Hospital, Air Force Medical University, Xi’an 710038, Shaanxi Province, China
| | - Cheng-Gong Liao
- Department of Oncology, Tangdu Hospital, Air Force Medical University, Xi’an 710038, Shaanxi Province, China
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2
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Ren X, Jiang M, Ding P, Zhang X, Zhou X, Shen J, Liu D, Yan X, Ma Z. Ubiquitin-specific protease 28: the decipherment of its dual roles in cancer development. Exp Hematol Oncol 2023; 12:27. [PMID: 36879346 PMCID: PMC9990303 DOI: 10.1186/s40164-023-00389-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 09/02/2022] [Accepted: 02/15/2023] [Indexed: 03/08/2023] Open
Abstract
As significant posttranslational modifications, ubiquitination and deubiquitination, whose balance is modulated by ubiquitin-conjugating enzymes and deubiquitinating enzymes (DUBs), can regulate many biological processes, such as controlling cell cycle progression, signal transduction and transcriptional regulation. Belonging to DUBs, ubiquitin-specific protease 28 (USP28) plays an essential role in turning over ubiquitination and then contributing to the stabilization of quantities of substrates, including several cancer-related proteins. In previous studies, USP28 has been demonstrated to participate in the progression of various cancers. Nevertheless, several reports have recently shown that in addition to promoting cancers, USP28 can also play an oncostatic role in some cancers. In this review, we summarize the correlation between USP28 and tumor behaviors. We initially give a brief introduction of the structure and related biological functions of USP28, and we then introduce some concrete substrates of USP28 and the underlying molecular mechanisms. In addition, the regulation of the actions and expression of USP28 is also discussed. Moreover, we concentrate on the impacts of USP28 on diverse hallmarks of cancer and discuss whether USP28 can accelerate or inhibit tumor progression. Furthermore, clinical relevance, including impacting clinical prognosis, influencing therapy resistance and being the therapy target in some cancers, is depicted systematically. Thus, assistance may be given to future experimental designs by the information provided here, and the potential of targeting USP28 for cancer therapy is emphasized.
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Affiliation(s)
- Xiaoya Ren
- Department of Thoracic Surgery, Tangdu Hospital, Air Force Medical University, 1 Xinsi Road, Xi'an, 710038, China.,Department of Medical Oncology, Senior Department of Oncology, Chinese PLA General Hospital, The Fifth Medical Center, 28 Fuxing Road, Beijing, 100853, China
| | - Menglong Jiang
- Department of Thoracic Surgery, 1st Affiliated Hospital of Anhui Medical University, Hefei City, China
| | - Peng Ding
- Department of Thoracic Surgery, Tangdu Hospital, Air Force Medical University, 1 Xinsi Road, Xi'an, 710038, China
| | - Xiaoyan Zhang
- Department of Aerospace Medicine, Air Force Medical University, Xi'an, China
| | - Xin Zhou
- Department of Medical Oncology, Senior Department of Oncology, Chinese PLA General Hospital, The Fifth Medical Center, 28 Fuxing Road, Beijing, 100853, China
| | - Jian Shen
- Senior Department of Cardiology, The Sixth Medical Center, Chinese PLA General Hospital and Chinese PLA Medical School, 28 Fuxing Road, Beijing, 100853, China
| | - Dong Liu
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences, Peking Union Medical College, 167 Beilishi Road, Beijing, 100037, China.
| | - Xiaolong Yan
- Department of Thoracic Surgery, Tangdu Hospital, Air Force Medical University, 1 Xinsi Road, Xi'an, 710038, China.
| | - Zhiqiang Ma
- Department of Medical Oncology, Senior Department of Oncology, Chinese PLA General Hospital, The Fifth Medical Center, 28 Fuxing Road, Beijing, 100853, China.
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Zhang W, Yang Y, Xiang Z, Cheng J, Yu Z, Wang W, Hu L, Ma F, Deng Y, Jin Z, Hu X. MRTF-A-mediated protection against amyloid-β-induced neuronal injury correlates with restoring autophagy via miR-1273g-3p/mTOR axis in Alzheimer models. Aging (Albany NY) 2022; 14:4305-4325. [PMID: 35604830 PMCID: PMC9186769 DOI: 10.18632/aging.203883] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 12/07/2021] [Indexed: 11/25/2022]
Abstract
Myocardia-Related Transcription Factors-A (MRTF-A), which is enriched in the hippocampus and cerebral cortex, has been shown to have a protective function against ischemia hypoxia-induced neuronal apoptosis. However, the function of MRTF-A on β-amyloid peptide (Aβ)-induced neurotoxicity and autophagy dysfunction in Alzheimer's disease is still unclear. This study shows that the expression of MRTF-A in the hippocampus of Tg2576 transgenic mice is reduced, and the overexpression of MRTF-A mediated by lentiviral vectors carrying MRTF-A significantly reduces the accumulation of hippocampal β-amyloid peptide and reduces cognition defect. Overexpression of MRTF-A inhibits neuronal apoptosis, increases the protein levels of microtubule-associated protein 1 light chain 3-II (MAP1LC3/LC3-II) and Beclin1, reduces the accumulation of SQSTM1/p62 protein, and promotes autophagosomes-Lysosomal fusion in vivo and in vitro. Microarray analysis and bioinformatics analysis show that MRTF-A reverses Aβ-induced autophagy impairment by up-regulating miR-1273g-3p level leading to negative regulation of the mammalian target of rapamycin (mTOR), which is confirmed in Aβ1-42-treated SH-SY5Y cells. Further, overexpression of MRTF-A reduces Aβ1-42-induced neuronal apoptosis. And the effect was abolished by miR-1273g-3p inhibitor or MHY1485 (mTOR agonist), indicating that the protection of MRTF-A on neuronal damage is through targeting miR-1273g-3p/mTOR axis. Targeting this signaling may be a promising approach to protect against Aβ-induced neuronal injury.
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Affiliation(s)
- Wei Zhang
- Affiliated Wuhan Resources and Wisco General Hospital, University of Science and Technology, Wuhan, Hubei, China
| | - Yuewang Yang
- College of Pharmacy, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Zifei Xiang
- College of Medicine, Wuhan University of Science and Technology, Wuhan, Hubei, China
| | - Jinping Cheng
- Affiliated Wuhan Resources and Wisco General Hospital, University of Science and Technology, Wuhan, Hubei, China
| | - Zhijun Yu
- College of Medicine, Wuhan University of Science and Technology, Wuhan, Hubei, China
| | - Wen Wang
- Affiliated Wuhan Resources and Wisco General Hospital, University of Science and Technology, Wuhan, Hubei, China
| | - Ling Hu
- College of Medicine, Wuhan University of Science and Technology, Wuhan, Hubei, China
| | - Fuyun Ma
- College of Pharmacy, Shanghai University of Medicine and Health Sciences, Shanghai, China
| | - Youping Deng
- Bioinformatics Core Department of Quantitative Health Sciences, John A. Burns School of Medicine, University of Hawaii, Honolulu, HI 96813, USA
| | - Zhigang Jin
- Affiliated Wuhan Resources and Wisco General Hospital, University of Science and Technology, Wuhan, Hubei, China
| | - Xiamin Hu
- College of Pharmacy, Shanghai University of Medicine and Health Sciences, Shanghai, China
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4
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Zhou W, Xu Y, Zhang J, Zhang P, Yao Z, Yan Z, Wang H, Chu J, Yao S, Zhao S, Yang S, Guo Y, Miao J, Liu K, Chan WC, Xia Q, Liu Y. MiRNA-363-3p/DUSP10/JNK axis mediates chemoresistance by enhancing DNA damage repair in diffuse large B-cell lymphoma. Leukemia 2022; 36:1861-1869. [PMID: 35488020 PMCID: PMC9252898 DOI: 10.1038/s41375-022-01565-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 03/25/2022] [Accepted: 03/31/2022] [Indexed: 12/11/2022]
Abstract
Anthracycline-based chemotherapy resistance represents a major challenge in diffuse large B-cell lymphoma (DLBCL). MiRNA and gene expression profiles (n = 47) were determined to uncover potential chemoresistance mechanisms and therapeutic approaches. An independent correlation between high expression of miRNA-363-3p and chemoresistance was observed and validated in a larger cohort (n = 106). MiRNA-363-3p was shown to reduce doxorubicin-induced apoptosis and tumor shrinkage in in vitro and in vivo experiments by ectopic expression and CRISPR/Cas9-mediated knockout in DLBCL cell lines. DNA methylation was found to participate in transcriptional regulation of miRNA-363-3p. Further investigation revealed that dual specificity phosphatase 10 (DUSP10) is a target of miRNA-363-3p and its suppression promotes the phosphorylation of c-Jun N-terminal kinase (JNK). The miRNA-363-3p/DUSP10/JNK axis was predominantly associated with negative regulation of homologous recombination (HR) and DNA repair pathways. Ectopic expression of miRNA-363-3p more effectively repaired doxorubicin-induced double-strand break (DSB) while enhancing non-homologous end joining repair and reducing HR repair. Targeting JNK and poly (ADP-ribose) polymerase 1 significantly inhibited doxorubicin-induced DSB repair, increased doxorubicin-induced cell apoptosis and tumor shrinkage, and improved the survival of tumor-bearing mice. In conclusion, the miRNA-363-3p/DUSP10/JNK axis is a novel chemoresistance mechanism in DLBCL that may be reversed by targeted therapy.
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Affiliation(s)
- Wenping Zhou
- Department of Internal Medicine, Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, Henan, China.,Department of Lymphoma Research, Henan Cancer Institute, Zhengzhou, Henan, China
| | - Yuanlin Xu
- Department of Internal Medicine, Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, Henan, China
| | - Jiuyang Zhang
- Department of Internal Medicine, Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, Henan, China
| | - Peipei Zhang
- Department of Internal Medicine, Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, Henan, China.,Department of Lymphoma Research, Henan Cancer Institute, Zhengzhou, Henan, China
| | - Zhihua Yao
- Department of Internal Medicine, Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, Henan, China
| | - Zheng Yan
- Department of Internal Medicine, Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, Henan, China
| | - Haiying Wang
- Department of Internal Medicine, Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, Henan, China
| | - Junfeng Chu
- Department of Internal Medicine, Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, Henan, China
| | - Shuna Yao
- Department of Internal Medicine, Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, Henan, China
| | - Shuang Zhao
- Department of Internal Medicine, Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, Henan, China
| | - Shujun Yang
- Department of Internal Medicine, Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, Henan, China
| | - Yongjun Guo
- Department of Molecule and Pathology, Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, Henan, China
| | - Jinxin Miao
- Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou, Henan, China
| | - Kangdong Liu
- China-US (Henan) Hormel Cancer Institute, Zhengzhou, Henan, China
| | - Wing C Chan
- Department of Pathology, City of Hope National Medical Center, Duarte, CA, USA
| | - Qingxin Xia
- Department of Molecule and Pathology, Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, Henan, China.
| | - Yanyan Liu
- Department of Internal Medicine, Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, Henan, China. .,Department of Lymphoma Research, Henan Cancer Institute, Zhengzhou, Henan, China.
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5
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Zhang P, Sun H, Wen P, Wang Y, Cui Y, Wu J. circRNA circMED27 acts as a prognostic factor and mediator to promote lenvatinib resistance of hepatocellular carcinoma. Mol Ther Nucleic Acids 2022; 27:293-303. [PMID: 35024242 PMCID: PMC8718824 DOI: 10.1016/j.omtn.2021.12.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 12/07/2021] [Indexed: 12/24/2022]
Abstract
Circular RNAs (circRNAs) have been proven to play key roles in the development and progression of various types of cancers. However, there were no reported studies on the roles of circRNA mediator complex subunit 27 (circMED27) in tumors including hepatocellular carcinoma (HCC). In this study, we found that circMED27 was significantly increased in HCC serum and that higher levels of circMED27 were correlated with bad clinical characteristics and poor prognoses of patients with HCC. Furthermore, upregulated circMED27 promoted HCC resistance to lenvatinib. Our mechanistic investigations revealed that circMED27 functions as a competing endogenous RNA (ceRNA) for miR-655-3p to upregulate ubiquitin-specific peptidase 28 (USP28) expression. Thus, we are led to conclude that circMED27 acts as a potential therapeutic target for HCC patients receiving lenvatinib therapy and may represent a promising molecular biomarker for forecasting lenvatinib-resistant HCC.
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Affiliation(s)
- Pengfei Zhang
- Department of Oncology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Haixiang Sun
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Peihao Wen
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - Yilin Wang
- Department of Hepatic Surgery, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Yuehong Cui
- Department of Oncology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Jing Wu
- Department of Oncology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
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6
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Liang C, Huang M, Li T, Li L, Sussman H, Dai Y, Siemann DW, Xie M, Tang X. Towards an integrative understanding of cancer mechanobiology: calcium, YAP, and microRNA under biophysical forces. Soft Matter 2022; 18:1112-1148. [PMID: 35089300 DOI: 10.1039/d1sm01618k] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
An increasing number of studies have demonstrated the significant roles of the interplay between microenvironmental mechanics in tissues and biochemical-genetic activities in resident tumor cells at different stages of tumor progression. Mediated by molecular mechano-sensors or -transducers, biomechanical cues in tissue microenvironments are transmitted into the tumor cells and regulate biochemical responses and gene expression through mechanotransduction processes. However, the molecular interplay between the mechanotransduction processes and intracellular biochemical signaling pathways remains elusive. This paper reviews the recent advances in understanding the crosstalk between biomechanical cues and three critical biochemical effectors during tumor progression: calcium ions (Ca2+), yes-associated protein (YAP), and microRNAs (miRNAs). We address the molecular mechanisms underpinning the interplay between the mechanotransduction pathways and each of the three effectors. Furthermore, we discuss the functional interactions among the three effectors in the context of soft matter and mechanobiology. We conclude by proposing future directions on studying the tumor mechanobiology that can employ Ca2+, YAP, and miRNAs as novel strategies for cancer mechanotheraputics. This framework has the potential to bring insights into the development of novel next-generation cancer therapies to suppress and treat tumors.
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Affiliation(s)
- Chenyu Liang
- Department of Mechanical & Aerospace Engineering, Herbert Wertheim College of Engineering (HWCOE), Gainesville, FL, 32611, USA.
- UF Health Cancer Center (UFHCC), Gainesville, FL, 32611, USA
| | - Miao Huang
- Department of Mechanical & Aerospace Engineering, Herbert Wertheim College of Engineering (HWCOE), Gainesville, FL, 32611, USA.
- UF Health Cancer Center (UFHCC), Gainesville, FL, 32611, USA
| | - Tianqi Li
- UF Health Cancer Center (UFHCC), Gainesville, FL, 32611, USA
- Department of Biochemistry and Molecular Biology, College of Medicine (COM), Gainesville, FL, 32611, USA.
| | - Lu Li
- UF Health Cancer Center (UFHCC), Gainesville, FL, 32611, USA
- Department of Biochemistry and Molecular Biology, College of Medicine (COM), Gainesville, FL, 32611, USA.
| | - Hayley Sussman
- Department of Radiation Oncology, COM, Gainesville, FL, 32611, USA
| | - Yao Dai
- UF Health Cancer Center (UFHCC), Gainesville, FL, 32611, USA
- UF Genetics Institute (UFGI), University of Florida (UF), Gainesville, FL, 32611, USA
| | - Dietmar W Siemann
- UF Health Cancer Center (UFHCC), Gainesville, FL, 32611, USA
- UF Genetics Institute (UFGI), University of Florida (UF), Gainesville, FL, 32611, USA
| | - Mingyi Xie
- UF Health Cancer Center (UFHCC), Gainesville, FL, 32611, USA
- Department of Biochemistry and Molecular Biology, College of Medicine (COM), Gainesville, FL, 32611, USA.
- Department of Biomedical Engineering, College of Engineering (COE), University of Delaware (UD), Newark, DE, 19716, USA
| | - Xin Tang
- Department of Mechanical & Aerospace Engineering, Herbert Wertheim College of Engineering (HWCOE), Gainesville, FL, 32611, USA.
- UF Health Cancer Center (UFHCC), Gainesville, FL, 32611, USA
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Xuan J, Xu H, Li H, Chen D, Qiu Y, Chen X, Shao M, Xia X. Extracellular Vesicles from miR-148a-5p-Enriched Bone Marrow Mesenchymal Stem Cells Relieve Hepatic Fibrosis by Targeting Smad4. Mol Biotechnol 2022. [PMID: 35006577 DOI: 10.1007/s12033-021-00441-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 12/15/2021] [Indexed: 12/12/2022]
Abstract
Liver fibrosis is a hallmark feature of many chronic liver diseases, which is the leading cause of morbidity and mortality worldwide. Bone marrow mesenchymal stem cells (BMSCs)-derived extracellular vesicles have been applied in many diseases. In this study, we aimed to explore the specific mechanism of extracellular vesicles from BMSCs in liver fibrosis. Bioinformatics analysis was employed to screen miRNA and its target mRNA. Sirius Red staining was carried out to examine fibrosis in liver tissues. Extracellular vesicle morphology was assessed using Transmission Electron Microscopy. Quantitative real-time PCR (qRT-PCR) and western blotting analysis were performed to detect the expressions of miR-148a-5p, Smad4, transforming growth factor-β1 (TGF-β1), tissue inhibitor of metalloproteinase 1 (TIMP-1), Collagen I, α-smooth muscle actin (α-SMA), and extracellular vesicle markers CD9, TSG101, CD63, and calnexin. Dual-luciferase report gene assay was used for the luciferase activity analysis. Bioinformatics analysis revealed miR-148a-5p as a regulator in liver fibrosis. QRT-PCR results indicated that miR-148a-5p was lowly expressed in both thioacetamide (TAA)-induced mice and TGF-β1-activated hepatic stellate cells. Extracellular vesicles from miR-148a-5p enriched BMSCs downregulated the mRNA and protein levels of TGF-β1, TIMP-1, Collagen I, and α-SMA. Further bioinformatics analysis indicated that Smad4 was related to liver fibrosis. Furthermore, the dual-luciferase report gene assay confirmed the binding relationship between miR-148a-5p and Smad4. Extracellular vesicles from miR-148a-5p enriched BMSCs attenuated hepatic fibrosis in liver fibrosis by targeting Smad4.
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Stasevich EM, Murashko MM, Zinevich LS, Demin DE, Schwartz AM. The Role of Non-Coding RNAs in the Regulation of the Proto-Oncogene MYC in Different Types of Cancer. Biomedicines 2021; 9:921. [PMID: 34440124 DOI: 10.3390/biomedicines9080921] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Revised: 07/25/2021] [Accepted: 07/28/2021] [Indexed: 01/17/2023] Open
Abstract
Alterations in the expression level of the MYC gene are often found in the cells of various malignant tumors. Overexpressed MYC has been shown to stimulate the main processes of oncogenesis: uncontrolled growth, unlimited cell divisions, avoidance of apoptosis and immune response, changes in cellular metabolism, genomic instability, metastasis, and angiogenesis. Thus, controlling the expression of MYC is considered as an approach for targeted cancer treatment. Since c-Myc is also a crucial regulator of many cellular processes in healthy cells, it is necessary to find ways for selective regulation of MYC expression in tumor cells. Many recent studies have demonstrated that non-coding RNAs play an important role in the regulation of the transcription and translation of this gene and some RNAs directly interact with the c-Myc protein, affecting its stability. In this review, we summarize current data on the regulation of MYC by various non-coding RNAs that can potentially be targeted in specific tumor types.
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Li Y, Cui K, Zhang Q, Li X, Lin X, Tang Y, Prochownik EV, Li Y. FBXL6 degrades phosphorylated p53 to promote tumor growth. Cell Death Differ 2021; 28:2112-25. [PMID: 33568778 DOI: 10.1038/s41418-021-00739-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 01/10/2021] [Accepted: 01/20/2021] [Indexed: 01/31/2023] Open
Abstract
The ubiquitin-proteasome system regulates many distinct biological processes. Its dysregulation causes various diseases, including but not limited to cancer. In this study, based on the analysis of gene expression in several colorectal cancer (CRC) datasets, we show that FBXL6, a poorly-characterized F-box protein, is amplified, over-expressed, and highly correlated with poor prognosis in human CRC patients. Mechanistically, FBXL6 targets phospho-p53 (S315) to mediate its polyubiquitination and proteasomal degradation, thereby inhibiting p53 signaling. FBXL6 depletion inhibits proliferation of p53 wild-type (WT) CRC cells by inducing cell cycle arrest and apoptosis. Furthermore, p53 transcriptionally suppresses FBXL6 expression by binding its core promoter region. Taken together, these results identify the feed-forward loop of FBXL6-p53 as a potential therapeutic target for CRC treatments.
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Tyagi G, Kapoor N, Chandra G, Gambhir L. Cure lies in nature: medicinal plants and endophytic fungi in curbing cancer. 3 Biotech 2021; 11:263. [PMID: 33996375 DOI: 10.1007/s13205-021-02803-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [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: 02/17/2021] [Accepted: 04/21/2021] [Indexed: 12/15/2022] Open
Abstract
Success of targeted cancer treatment modalities has generated an ambience of plausible cure for cancer. However, cancer remains to be the major cause of mortality across the globe. The emergence of chemoresistance, relapse after treatment and associated adverse effects has posed challenges to the present therapeutic regimes. Thus, investigating new therapeutic agents of natural origin and delineating the underlying mechanism of action is necessary. Since ages and still in continuum, the phytochemicals have been the prime source of identifying bioactive agents against cancer. They have been exploited for isolating targeted specific compounds to modulate the key regulating signaling pathways of cancer pathogenesis and progression. Capsaicin (alkaloid compound in chilli), catechin, epicatechin, epigallocatechin and epigallocatechin-3-gallate (phytochemicals in green tea), lutein (carotenoid found in yellow fruits), Garcinol (phenolic compound present in kokum tree) and many other naturally available compounds are also very valuable to develop the drugs to treat the cancer. An alternate repository of similar chemical diversity exists in the form of endophytic fungi inhabiting the medicinal plants. There is a high diversity of plant associated endophytic fungi in nature which are potent producers of anti-cancer compounds and offers even stronger hope for the discovery of an efficient anti-cancer drug. These fungi provide various bioactive molecules, such as terpenoids, flavonoids, alkaloids, phenolic compounds, quinines, steroids etc. exhibiting anti-cancerous property. The review discusses the relevance of phytochemicals in chemoprevention and as modulators of miRNA. The perspective advocates the imperative role of anti-cancerous secondary metabolites containing repository of endophytic fungi, as an alternative route of drug discovery.
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Affiliation(s)
- Garima Tyagi
- Department of Biotechnology, School of Basic & Applied Sciences, Shri Guru Ram Rai University, Dehradun, Uttrakhand 248001 India
| | - Neha Kapoor
- School of Applied Sciences, Suresh Gyan Vihar University, Jaipur, Rajasthan 302017 India
| | - Girish Chandra
- Department of Seed Science and Technology, School of Agricultural Sciences, Shri Guru Ram Rai University, Dehradun, Uttrakhand 248001 India
| | - Lokesh Gambhir
- School of Applied Sciences, Suresh Gyan Vihar University, Jaipur, Rajasthan 302017 India
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Zhang Y, Tang Y, Guo C, Li G. Integrative analysis identifies key mRNA biomarkers for diagnosis, prognosis, and therapeutic targets of HCV-associated hepatocellular carcinoma. Aging (Albany NY) 2021; 13:12865-12895. [PMID: 33946043 PMCID: PMC8148482 DOI: 10.18632/aging.202957] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 03/23/2021] [Indexed: 02/05/2023]
Abstract
Hepatitis C virus-associated HCC (HCV-HCC) is a prevalent malignancy worldwide and the molecular mechanisms are still elusive. Here, we screened 240 differentially expressed genes (DEGs) of HCV-HCC from Gene expression omnibus (GEO) and the Cancer Genome Atlas (TCGA), followed by weighted gene coexpression network analysis (WGCNA) to identify the most significant module correlated with the overall survival. 10 hub genes (CCNB1, AURKA, TOP2A, NEK2, CENPF, NUF2, CDKN3, PRC1, ASPM, RACGAP1) were identified by four approaches (Protein-protein interaction networks of the DEGs and of the significant module by WGCNA, and diagnostic and prognostic values), and their abnormal expressions, diagnostic values, and prognostic values were successfully verified. A four hub gene-based prognostic signature was built using the least absolute shrinkage and selection operator (LASSO) algorithm and a multivariate Cox regression model with the ICGC-LIRI-JP cohort (N =112). Kaplan-Meier survival plots (P = 0.0003) and Receiver Operating Characteristic curves (ROC = 0.778) demonstrated the excellent predictive potential for the prognosis of HCV-HCC. Additionally, upstream regulators including transcription factors and miRNAs of hub genes were predicted, and candidate drugs or herbs were identified. These findings provide a firm basis for the exploration of the molecular mechanism and further clinical biomarkers development of HCV-HCC.
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Affiliation(s)
- Yongqiang Zhang
- Molecular Medicine Center, West China Hospital, Sichuan University, Chengdu 610041, P.R. China.,West China School of Medicine, West China Hospital, Sichuan University, Chengdu 610041, P.R. China
| | - Yuqin Tang
- School of Basic Medical Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, P.R. China
| | - Chengbin Guo
- Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, P.R. China
| | - Gen Li
- Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, P.R. China
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12
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Sartorius K, An P, Winkler C, Chuturgoon A, Li X, Makarova J, Kramvis A. The Epigenetic Modulation of Cancer and Immune Pathways in Hepatitis B Virus-Associated Hepatocellular Carcinoma: The Influence of HBx and miRNA Dysregulation. Front Immunol 2021; 12:661204. [PMID: 33995383 PMCID: PMC8117219 DOI: 10.3389/fimmu.2021.661204] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Accepted: 04/15/2021] [Indexed: 12/24/2022] Open
Abstract
Hepatitis B virus (HBV)-associated hepatocellular carcinoma (HBV-HCC) pathogenesis is fueled by persistent HBV infection that stealthily maintains a delicate balance between viral replication and evasion of the host immune system. HBV is remarkably adept at using a combination of both its own, as well as host machinery to ensure its own replication and survival. A key tool in its arsenal, is the HBx protein which can manipulate the epigenetic landscape to decrease its own viral load and enhance persistence, as well as manage host genome epigenetic responses to the presence of viral infection. The HBx protein can initiate epigenetic modifications to dysregulate miRNA expression which, in turn, can regulate downstream epigenetic changes in HBV-HCC pathogenesis. We attempt to link the HBx and miRNA induced epigenetic modulations that influence both the HBV and host genome expression in HBV-HCC pathogenesis. In particular, the review investigates the interplay between CHB infection, the silencing role of miRNA, epigenetic change, immune system expression and HBV-HCC pathogenesis. The review demonstrates exactly how HBx-dysregulated miRNA in HBV-HCC pathogenesis influence and are influenced by epigenetic changes to modulate both viral and host genome expression. In particular, the review identifies a specific subset of HBx induced epigenetic miRNA pathways in HBV-HCC pathogenesis demonstrating the complex interplay between HBV infection, epigenetic change, disease and immune response. The wide-ranging influence of epigenetic change and miRNA modulation offers considerable potential as a therapeutic option in HBV-HCC.
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Affiliation(s)
- Kurt Sartorius
- Hepatitis Virus Diversity Research Unit, School of Internal Medicine, University of the Witwatersrand, Johannesburg, South Africa.,Department of Public Health Medicine, School of Nursing and Public Health, University of KwaZulu-Natal, Durban, South Africa.,Department of Surgery, University of KwaZulu-Natal Gastrointestinal Cancer Research Centre, Durban, South Africa
| | - Ping An
- Basic Research Laboratory, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD, United States
| | - Cheryl Winkler
- Basic Research Laboratory, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD, United States
| | - Anil Chuturgoon
- Discipline of Medical Biochemistry, School of Laboratory Medicine and Medical Sciences, College of Health Science, University of KwaZulu-Natal, Durban, South Africa
| | - Xiaodong Li
- Department of Oncology, The Third Affiliated Hospital of Soochow University, Changzhou, China.,Department of Nutrition and Food Hygiene, School of Public Health, Soochow University, Suzhou, China
| | - Julia Makarova
- Faculty of Biology and Biotechnology, National Research University Higher School of Economics, Moscow, Russia.,Higher School of Economics University, Moscow, Russia
| | - Anna Kramvis
- Hepatitis Virus Diversity Research Unit, School of Internal Medicine, University of the Witwatersrand, Johannesburg, South Africa
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13
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Diallo I, Ho J, Laffont B, Laugier J, Benmoussa A, Lambert M, Husseini Z, Soule G, Kozak R, Kobinger GP, Provost P. Altered microRNA Transcriptome in Cultured Human Liver Cells upon Infection with Ebola Virus. Int J Mol Sci 2021; 22:ijms22073792. [PMID: 33917562 PMCID: PMC8038836 DOI: 10.3390/ijms22073792] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 03/27/2021] [Accepted: 03/30/2021] [Indexed: 02/07/2023] Open
Abstract
Ebola virus (EBOV) is a virulent pathogen, notorious for inducing life-threatening hemorrhagic fever, that has been responsible for several outbreaks in Africa and remains a public health threat. Yet, its pathogenesis is still not completely understood. Although there have been numerous studies on host transcriptional response to EBOV, with an emphasis on the clinical features, the impact of EBOV infection on post-transcriptional regulatory elements, such as microRNAs (miRNAs), remains largely unexplored. MiRNAs are involved in inflammation and immunity and are believed to be important modulators of the host response to viral infection. Here, we have used small RNA sequencing (sRNA-Seq), qPCR and functional analyses to obtain the first comparative miRNA transcriptome (miRNome) of a human liver cell line (Huh7) infected with one of the following three EBOV strains: Mayinga (responsible for the first Zaire outbreak in 1976), Makona (responsible for the West Africa outbreak in 2013–2016) and the epizootic Reston (presumably innocuous to humans). Our results highlight specific miRNA-based immunity pathways and substantial differences between the strains beyond their clinical manifestation and pathogenicity. These analyses shed new light into the molecular signature of liver cells upon EBOV infection and reveal new insights into miRNA-based virus attack and host defense strategy.
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Affiliation(s)
- Idrissa Diallo
- CHU de Québec Research Center, Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec, QC G1V 4G2, Canada; (I.D.); (J.H.); (B.L.); (J.L.); (A.B.); (M.L.); (Z.H.); (G.P.K.)
| | - Jeffrey Ho
- CHU de Québec Research Center, Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec, QC G1V 4G2, Canada; (I.D.); (J.H.); (B.L.); (J.L.); (A.B.); (M.L.); (Z.H.); (G.P.K.)
| | - Benoit Laffont
- CHU de Québec Research Center, Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec, QC G1V 4G2, Canada; (I.D.); (J.H.); (B.L.); (J.L.); (A.B.); (M.L.); (Z.H.); (G.P.K.)
| | - Jonathan Laugier
- CHU de Québec Research Center, Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec, QC G1V 4G2, Canada; (I.D.); (J.H.); (B.L.); (J.L.); (A.B.); (M.L.); (Z.H.); (G.P.K.)
| | - Abderrahim Benmoussa
- CHU de Québec Research Center, Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec, QC G1V 4G2, Canada; (I.D.); (J.H.); (B.L.); (J.L.); (A.B.); (M.L.); (Z.H.); (G.P.K.)
| | - Marine Lambert
- CHU de Québec Research Center, Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec, QC G1V 4G2, Canada; (I.D.); (J.H.); (B.L.); (J.L.); (A.B.); (M.L.); (Z.H.); (G.P.K.)
| | - Zeinab Husseini
- CHU de Québec Research Center, Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec, QC G1V 4G2, Canada; (I.D.); (J.H.); (B.L.); (J.L.); (A.B.); (M.L.); (Z.H.); (G.P.K.)
| | - Geoff Soule
- Special Pathogens Program, National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, MB R3B 3M9, Canada; (G.S.); (R.K.)
| | - Robert Kozak
- Special Pathogens Program, National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, MB R3B 3M9, Canada; (G.S.); (R.K.)
- Division of Microbiology, Department of Laboratory Medicine & Molecular Diagnostics, Sunnybrook Health Sciences Centre, Toronto, ON M4N 3M5, Canada
| | - Gary P. Kobinger
- CHU de Québec Research Center, Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec, QC G1V 4G2, Canada; (I.D.); (J.H.); (B.L.); (J.L.); (A.B.); (M.L.); (Z.H.); (G.P.K.)
- Special Pathogens Program, National Microbiology Laboratory, Public Health Agency of Canada, Winnipeg, MB R3B 3M9, Canada; (G.S.); (R.K.)
- Département de Microbiologie Médicale, Université du Manitoba, Winnipeg, MB R3E 0J9, Canada
| | - Patrick Provost
- CHU de Québec Research Center, Department of Microbiology, Infectious Diseases and Immunology, Faculty of Medicine, Université Laval, Quebec, QC G1V 4G2, Canada; (I.D.); (J.H.); (B.L.); (J.L.); (A.B.); (M.L.); (Z.H.); (G.P.K.)
- CHUQ Research Center/CHUL Pavilion, 2705 Blvd Laurier, Room T1-65, Quebec, QC G1V 4G2, Canada
- Correspondence: ; Tel.: +1-418-525-4444 (ext. 48842)
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Hussen BM, Hidayat HJ, Salihi A, Sabir DK, Taheri M, Ghafouri-Fard S. MicroRNA: A signature for cancer progression. Biomed Pharmacother 2021; 138:111528. [PMID: 33770669 DOI: 10.1016/j.biopha.2021.111528] [Citation(s) in RCA: 97] [Impact Index Per Article: 32.3] [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: 01/01/2021] [Revised: 03/05/2021] [Accepted: 03/17/2021] [Indexed: 12/12/2022] Open
Abstract
MicroRNAs (miRNAs) are a group of small non-coding RNAs that post-transcriptionally control expression of genes by targeting mRNAs. miRNA alterations partake in the establishment and progression of different types of human cancer. Consequently, expression profiling of miRNA in human cancers has correlations with cancer detection, staging, progression, and response to therapies. Particularly, amplification, deletion, abnormal pattern of epigenetic factors and the transcriptional factors that mediate regulation of primary miRNA frequently change the landscape of miRNA expression in cancer. Indeed, changes in the quantity and quality of miRNAs are associated with the initiation of cancer, its progression and metastasis. Additionally, miRNA profiling has been used to categorize genes that can affect oncogenic pathways in cancer. Here, we discuss several circulating miRNA signatures, their expression profiles in different types of cancer and their impacts on cellular processes.
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Affiliation(s)
- Bashdar Mahmud Hussen
- Department of Pharmacognosy, College of Pharmacy, Hawler Medical University, Kurdistan Region, Iraq
| | - Hazha Jamal Hidayat
- Department of Biology, College of Education, Salahaddin University-Erbil, Kurdistan Region, Iraq
| | - Abbas Salihi
- Department of Biology, College of Science, Salahaddin University-Erbil, Kurdistan Region, Iraq; Department of Medical Analysis, Faculty of Science, Tishk International University, Erbil, Iraq
| | - Dana K Sabir
- Department of Medical Laboratory Sciences, Charmo University, Kurdistan Region, Iraq
| | - Mohammad Taheri
- Urology and Nephrology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Soudeh Ghafouri-Fard
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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15
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Morishita A, Oura K, Tadokoro T, Fujita K, Tani J, Masaki T. MicroRNAs in the Pathogenesis of Hepatocellular Carcinoma: A Review. Cancers (Basel) 2021; 13:cancers13030514. [PMID: 33572780 PMCID: PMC7866004 DOI: 10.3390/cancers13030514] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/22/2021] [Accepted: 01/25/2021] [Indexed: 12/11/2022] Open
Abstract
Simple Summary Hepatocellular carcinoma (HCC) is one of the most frequently occurring cancers, and the prognosis for late-stage HCC remains poor. A better understanding of the pathogenesis of HCC is expected to improve outcomes. MicroRNAs (miRNAs) are small, noncoding, single-stranded RNAs that regulate the expression of various target genes, including those in cancer-associated genomic regions or fragile sites in various human cancers. We summarize the central roles of miRNAs in the pathogenesis of HCC and discuss their potential utility as valuable biomarkers and new therapeutic agents for HCC. Abstract Hepatocellular carcinoma (HCC) is the seventh most frequent cancer and the fourth leading cause of cancer mortality worldwide. Despite substantial advances in therapeutic strategies, the prognosis of late-stage HCC remains dismal because of the high recurrence rate. A better understanding of the etiology of HCC is therefore necessary to improve outcomes. MicroRNAs (miRNAs) are small, endogenous, noncoding, single-stranded RNAs that modulate the expression of their target genes at the posttranscriptional and translational levels. Aberrant expression of miRNAs has frequently been detected in cancer-associated genomic regions or fragile sites in various human cancers and has been observed in both HCC cells and tissues. The precise patterns of aberrant miRNA expression differ depending on disease etiology, including various causes of hepatocarcinogenesis, such as viral hepatitis, alcoholic liver disease, or nonalcoholic steatohepatitis. However, little is known about the underlying mechanisms and the association of miRNAs with the pathogenesis of HCC of various etiologies. In the present review, we summarize the key mechanisms of miRNAs in the pathogenesis of HCC and emphasize their potential utility as valuable diagnostic and prognostic biomarkers, as well as innovative therapeutic targets, in HCC diagnosis and treatment.
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16
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Wu X, Wu G, Zhang H, Peng X, Huang B, Huang M, Ding J, Mao C, Peng C. MiR-196b Promotes the Invasion and Migration of Lung Adenocarcinoma Cells by Targeting AQP4. Technol Cancer Res Treat 2021; 20:1533033820985868. [PMID: 33455522 PMCID: PMC8097310 DOI: 10.1177/1533033820985868] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Objective: We aimed to investigate the mechanism of the regulatory axis of miR-196b/AQP4
underlying the invasion and migration of lung adenocarcinoma (LUAD)
cells. Methods: LUAD miRNA and mRNA expression profiles were downloaded from TCGA database
and then differential analysis was used to identify the target miRNA. Target
gene for the miRNA was obtained via prediction using 3 bioinformatics
databases and intersection with the differentially expressed mRNAs searched
from TCGA-LUAD. Then, qRT-PCR and western blot were used to validate the
expression of miR-196b and AQP4. Dual-luciferase reporter assay was
performed to confirm the targeting relationship between miR-196b and AQP4.
Transwell assay was used to investigate the migration and invasion of LUAD
cells. Results: MiR-196b was screened out by differential and survival analyses, and the
downstream target gene AQP4 was identified. In LUAD, miR-196b was highly
expressed while AQP4 was poorly expressed. Besides, overexpression of
miR-196b promoted cell invasion and migration, while overexpression of AQP4
had negative effects. Moreover, the results of the dual-luciferase reporter
assay suggested that AQP4 was a direct target of miR-196b. In addition, we
also found that overexpressing AQP4 could suppress the promotive effect of
miR-196b on cancer cell invasion and migration. Conclusion: MiR-196b promotes the invasion and migration of LUAD cells by down-regulating
AQP4, which helps us find new molecular targeted therapies for LUAD.
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Affiliation(s)
- Xuhui Wu
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Gongzhi Wu
- Department of Cardiothoracic Surgery, Lishui City People's Hospital, the Sixth Affiliated Hospital of Wenzhou Medical University, Lishui, China
| | - Huaizhong Zhang
- Department of Cardiothoracic Surgery, Lishui City People's Hospital, the Sixth Affiliated Hospital of Wenzhou Medical University, Lishui, China
| | - Xuyang Peng
- Department of Cardiothoracic Surgery, Lishui City People's Hospital, the Sixth Affiliated Hospital of Wenzhou Medical University, Lishui, China
| | - Bin Huang
- Department of Cardiothoracic Surgery, Lishui City People's Hospital, the Sixth Affiliated Hospital of Wenzhou Medical University, Lishui, China
| | - Mingjiang Huang
- Department of Cardiothoracic Surgery, Lishui City People's Hospital, the Sixth Affiliated Hospital of Wenzhou Medical University, Lishui, China
| | - Jianyang Ding
- Department of Cardiothoracic Surgery, Lishui City People's Hospital, the Sixth Affiliated Hospital of Wenzhou Medical University, Lishui, China
| | - Chaofan Mao
- Department of Cardiothoracic Surgery, Lishui City People's Hospital, the Sixth Affiliated Hospital of Wenzhou Medical University, Lishui, China
| | - Congxiong Peng
- Department of Cardiothoracic Surgery, Lishui City People's Hospital, the Sixth Affiliated Hospital of Wenzhou Medical University, Lishui, China
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17
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Gu L, Zhu Y, Lin X, Lu B, Zhou X, Zhou F, Zhao Q, Prochownik EV, Li Y. The IKKβ-USP30-ACLY Axis Controls Lipogenesis and Tumorigenesis. Hepatology 2021; 73:160-174. [PMID: 32221968 DOI: 10.1002/hep.31249] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 01/24/2020] [Accepted: 03/14/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND AND AIMS Hepatocellular carcinoma (HCC) is a leading cause of cancer-related death that develops as a consequence of obesity, cirrhosis, and chronic hepatitis. However, the pathways along which these changes occur remain incompletely understood. APPROACH AND RESULTS In this study, we show that the deubiquitinase USP30 is abundant in HCCs that arise in mice maintained on high-fat diets. IKKβ phosphorylated and stabilized USP30, which promoted USP30 to deubiquitinate ATP citrate lyase (ACLY) and fatty acid synthase (FASN). IKKβ also directly phosphorylated ACLY and facilitated the interaction between USP30 and ACLY and the latter's deubiquitination. In HCCs arising in DEN/CCl4 -treated mice, USP30 deletion attenuated lipogenesis, inflammation, and tumorigenesis regardless of diet. The combination of ACLY inhibitor and programmed death ligand 1 antibody largely suppressed chemical-induced hepatocarcinogenesis. The IKKβ-USP30-ACLY axis was also found to be up-regulated in human HCCs. CONCLUSIONS This study identifies an IKKβ-USP30-ACLY axis that plays an essential and wide-spread role in tumor metabolism and may be a potential therapeutic target in HCC.
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Affiliation(s)
- Li Gu
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan, China.,Frontier Science Center for Immunology and Metabolism, Medical Research Institute, Wuhan University, Wuhan, China
| | - Yahui Zhu
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan, China.,Frontier Science Center for Immunology and Metabolism, Medical Research Institute, Wuhan University, Wuhan, China
| | - Xi Lin
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan, China.,Frontier Science Center for Immunology and Metabolism, Medical Research Institute, Wuhan University, Wuhan, China
| | - Bingjun Lu
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan, China.,Frontier Science Center for Immunology and Metabolism, Medical Research Institute, Wuhan University, Wuhan, China
| | - Xinyi Zhou
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan, China.,Frontier Science Center for Immunology and Metabolism, Medical Research Institute, Wuhan University, Wuhan, China
| | - Feng Zhou
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University School of Medicine, Wuhan, China.,Hubei Clinical Center and Key Laboratory for Intestinal and Colorectal Diseases, Wuhan, China
| | - Qiu Zhao
- Department of Gastroenterology, Zhongnan Hospital of Wuhan University School of Medicine, Wuhan, China.,Hubei Clinical Center and Key Laboratory for Intestinal and Colorectal Diseases, Wuhan, China
| | - Edward V Prochownik
- Division of Hematology/Oncology, Children's Hospital of Pittsburgh of UPMC, The Department of Microbiology and Molecular Genetics, The Pittsburgh Liver Research Center and The Hillman Cancer Center of UPMC, The University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Youjun Li
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan, China.,Frontier Science Center for Immunology and Metabolism, Medical Research Institute, Wuhan University, Wuhan, China
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Tu R, Chen Z, Bao Q, Liu H, Qing G. Crosstalk between oncogenic MYC and noncoding RNAs in cancer. Semin Cancer Biol 2020; 75:62-71. [DOI: 10.1016/j.semcancer.2020.10.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 10/09/2020] [Accepted: 10/24/2020] [Indexed: 12/19/2022]
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19
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Metzendorf C, Wineberger K, Rausch J, Cigliano A, Peters K, Sun B, Mennerich D, Kietzmann T, Calvisi DF, Dombrowski F, Ribback S. Transcriptomic and Proteomic Analysis of Clear Cell Foci (CCF) in the Human Non-Cirrhotic Liver Identifies Several Differentially Expressed Genes and Proteins with Functions in Cancer Cell Biology and Glycogen Metabolism. Molecules 2020; 25:molecules25184141. [PMID: 32927708 PMCID: PMC7570661 DOI: 10.3390/molecules25184141] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 09/06/2020] [Accepted: 09/07/2020] [Indexed: 01/06/2023] Open
Abstract
Clear cell foci (CCF) of the liver are considered to be pre-neoplastic lesions of hepatocellular adenomas and carcinomas. They are hallmarked by glycogen overload and activation of AKT (v-akt murine thymoma viral oncogene homolog)/mTOR (mammalian target of rapamycin)-signaling. Here, we report the transcriptome and proteome of CCF extracted from human liver biopsies by laser capture microdissection. We found 14 genes and 22 proteins differentially expressed in CCF and the majority of these were expressed at lower levels in CCF. Using immunohistochemistry, the reduced expressions of STBD1 (starch-binding domain-containing protein 1), USP28 (ubiquitin-specific peptidase 28), monad/WDR92 (WD repeat domain 92), CYB5B (Cytochrome b5 type B), and HSPE1 (10 kDa heat shock protein, mitochondrial) were validated in CCF in independent specimens. Knockout of Stbd1, the gene coding for Starch-binding domain-containing protein 1, in mice did not have a significant effect on liver glycogen levels, indicating that additional factors are required for glycogen overload in CCF. Usp28 knockout mice did not show changes in glycogen storage in diethylnitrosamine-induced liver carcinoma, demonstrating that CCF are distinct from this type of cancer model, despite the decreased USP28 expression. Moreover, our data indicates that decreased USP28 expression is a novel factor contributing to the pre-neoplastic character of CCF. In summary, our work identifies several novel and unexpected candidates that are differentially expressed in CCF and that have functions in glycogen metabolism and tumorigenesis.
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Affiliation(s)
- Christoph Metzendorf
- Institut fuer Pathologie, Universitaetsmedizin Greifswald, Friedrich-Loeffler-Str. 23e, 17475 Greifswald, Germany; (C.M.); (K.W.); (J.R.); (A.C.); (K.P.); (D.F.C.); (F.D.)
| | - Katharina Wineberger
- Institut fuer Pathologie, Universitaetsmedizin Greifswald, Friedrich-Loeffler-Str. 23e, 17475 Greifswald, Germany; (C.M.); (K.W.); (J.R.); (A.C.); (K.P.); (D.F.C.); (F.D.)
| | - Jenny Rausch
- Institut fuer Pathologie, Universitaetsmedizin Greifswald, Friedrich-Loeffler-Str. 23e, 17475 Greifswald, Germany; (C.M.); (K.W.); (J.R.); (A.C.); (K.P.); (D.F.C.); (F.D.)
| | - Antonio Cigliano
- Institut fuer Pathologie, Universitaetsmedizin Greifswald, Friedrich-Loeffler-Str. 23e, 17475 Greifswald, Germany; (C.M.); (K.W.); (J.R.); (A.C.); (K.P.); (D.F.C.); (F.D.)
| | - Kristin Peters
- Institut fuer Pathologie, Universitaetsmedizin Greifswald, Friedrich-Loeffler-Str. 23e, 17475 Greifswald, Germany; (C.M.); (K.W.); (J.R.); (A.C.); (K.P.); (D.F.C.); (F.D.)
| | - Baodong Sun
- Division of Medical Genetics, Department of Pediatrics, Duke University Medical Center, Durham, NC 27710, USA;
| | - Daniela Mennerich
- Faculty of Biochemistry and Molecular Medicine, University of Oulu, 90570 Oulu, Finland; (D.M.); (T.K.)
- Biocenter Oulu, University of Oulu, 90570 Oulu, Finland
| | - Thomas Kietzmann
- Faculty of Biochemistry and Molecular Medicine, University of Oulu, 90570 Oulu, Finland; (D.M.); (T.K.)
- Biocenter Oulu, University of Oulu, 90570 Oulu, Finland
| | - Diego F. Calvisi
- Institut fuer Pathologie, Universitaetsmedizin Greifswald, Friedrich-Loeffler-Str. 23e, 17475 Greifswald, Germany; (C.M.); (K.W.); (J.R.); (A.C.); (K.P.); (D.F.C.); (F.D.)
| | - Frank Dombrowski
- Institut fuer Pathologie, Universitaetsmedizin Greifswald, Friedrich-Loeffler-Str. 23e, 17475 Greifswald, Germany; (C.M.); (K.W.); (J.R.); (A.C.); (K.P.); (D.F.C.); (F.D.)
| | - Silvia Ribback
- Institut fuer Pathologie, Universitaetsmedizin Greifswald, Friedrich-Loeffler-Str. 23e, 17475 Greifswald, Germany; (C.M.); (K.W.); (J.R.); (A.C.); (K.P.); (D.F.C.); (F.D.)
- Correspondence: ; Tel.: +49-383-486-5732; Fax: +49-383-486-5778
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Shah V, Shah J. Recent trends in targeting miRNAs for cancer therapy. J Pharm Pharmacol 2020; 72:1732-1749. [PMID: 32783235 DOI: 10.1111/jphp.13351] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 07/12/2020] [Accepted: 07/15/2020] [Indexed: 12/19/2022]
Abstract
OBJECTIVES MicroRNAs (miRNAs) are a type of small noncoding RNA employed by the cells for gene regulation. A single miRNA, typically 22 nucleotides in length, can regulate the expression of numerous genes. Over the past decade, the study of miRNA biology in the context of cancer has led to the development of new diagnostic and therapeutic opportunities. KEY FINDINGS MicroRNA dysregulation is commonly associated with cancer, in part because miRNAs are actively involved in the mechanisms like genomic instabilities, aberrant transcriptional control, altered epigenetic regulation and biogenesis machinery defects. MicroRNAs can regulate oncogenes or tumour suppressor genes and thus when altered can lead to tumorigenesis. Expression profiling of miRNAs has boosted the possibilities of application of miRNAs as potential cancer biomarkers and therapeutic targets, although the feasibility of these approaches will require further validation. SUMMARY In this review, we will focus on how miRNAs regulate tumour development and the potential applications of targeting miRNAs for cancer therapy.
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Affiliation(s)
- Vandit Shah
- Institute of Pharmacy, Nirma University, Ahmedabad, Gujarat, India
| | - Jigna Shah
- Institute of Pharmacy, Nirma University, Ahmedabad, Gujarat, India
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21
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Mei Y, Zhou C, Liang CY, Lu GM, Zeng MS, Wang JJ, Feng GK. A method to establish a c-Myc transgenic mouse model of hepatocellular carcinoma. MethodsX 2020; 7:100921. [PMID: 32489910 PMCID: PMC7256637 DOI: 10.1016/j.mex.2020.100921] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 05/09/2020] [Indexed: 02/07/2023] Open
Abstract
Hepatocellular carcinoma (HCC) remains one of the most lethal malignant cancers worldwide. HCC mouse models are widely used to explore the molecular pathogenesis of HCC and to test novel drug candidates. The advantages of this mouse model are as follows:This method developed a H11LNL-Myc knock-in HCC mouse model by crossing H11LNL-Myc heterozygous mice with (albumin (Alb))-cre transgenic mice to generate c-Myc/Alb-cre double positive mice. The c-Myc/Alb-cre double-positive mice exhibited a typical HCC phenotype, and showed accelerated tumor initiation and rapid HCC progression. Early stage HCC tumors (2–3 mm in diameter) were observed in male mice at the age of 47 days and in female mice at the age of 60 days. Approximately 3 months later, the HCC tumors had progressed to a late stage (> 1 cm in diameter), and 100% of the male and female mice had HCC.
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Affiliation(s)
- Yan Mei
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, 651 Dongfeng East Road, Guangzhou 510060, China
| | - Chao Zhou
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, 651 Dongfeng East Road, Guangzhou 510060, China
| | - Chao-Yong Liang
- Department of Medical Oncology, Affiliated Tumor Hospital of Guangxi Medical University, Nanning 530021, Guangxi, China
| | - Guan-Ming Lu
- Department of Breast and Thyroid Surgery, Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, Guangxi 533000, China
| | - Mu-Sheng Zeng
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, 651 Dongfeng East Road, Guangzhou 510060, China
| | - Jin-Jin Wang
- Shanghai Model Organism Center, Inc, Shanghai, China
| | - Guo-Kai Feng
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, 651 Dongfeng East Road, Guangzhou 510060, China
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22
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Abstract
The World Health Organisation, in its 2019 progress report on HIV, viral hepatitis and STDs indicates that 257 million people are afflicted with chronic HBV infections, of which, 1 million patients lose their lives every year due to HBV related chronic liver diseases including serious complications such as liver cirrhosis and hepatocellular carcinoma. The course of HBV infection and associated liver injury depend on several host factors, genetic variability of the virus, and the host viral interplay. The challenge of medical science is the early diagnosis/identification of the potential for development of fatal complications like liver cirrhosis and HCC so that timely medical intervention can improve the chances of survival. Currently, neither the vaccination regime nor the diagnostic methods are completely effective as reflected in the high number of annual deaths. It is evident from numerous publications that microRNAs (miRNAs) are the critical regulators of gene expression and various cellular processes like proliferation, development, differentiation, apoptosis and tumorigenesis. Expressions of these diminutive RNAs are significantly affected in cancerous tissues as a result of numerous genomic and epigenetic modifications. Exosomes are membrane-derived vesicles (30–100 nm) secreted by normal as well as malignant cells, and are present in all body fluids. They are recognized as critical molecules in intercellular communication between cells through horizontal transfer of information via their cargo, which includes selective proteins, mRNAs and miRNAs. Exosomal miRNAs are transferred to recipient cells where they can regulate target gene expression. This provides an insight into the elementary biology of cancer progression and therefore the development of therapeutic approaches. This concise review outlines various on-going research on miRNA mediated regulation of HBV pathogenesis with special emphasis on association of exosomal miRNA in advanced stage liver disease like hepatocellular carcinoma. This review also discusses the possible use of exosomal miRNAs as biomarkers in the early detection of HCC and liver cirrhosis.
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Affiliation(s)
- Manikankana Bandopadhyay
- Molecular Genetics and Biochemistry, National Institute of Cancer Prevention and Research (NICPR), Indian Council of Medical Research (ICMR), Noida, Uttar Pradesh 201301 India
| | - Mausumi Bharadwaj
- Molecular Genetics and Biochemistry, National Institute of Cancer Prevention and Research (NICPR), Indian Council of Medical Research (ICMR), Noida, Uttar Pradesh 201301 India
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23
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Koyama S, Tsuchiya H, Amisaki M, Sakaguchi H, Honjo S, Fujiwara Y, Shiota G. NEAT1 is Required for the Expression of the Liver Cancer Stem Cell Marker CD44. Int J Mol Sci 2020; 21:ijms21061927. [PMID: 32168951 PMCID: PMC7139689 DOI: 10.3390/ijms21061927] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 02/14/2020] [Accepted: 03/10/2020] [Indexed: 12/18/2022] Open
Abstract
CD44, a cancer stem cell (CSC) marker, is required for maintaining CSC properties in hepatocellular carcinoma (HCC). Nuclear enriched abundant transcript 1 (NEAT1), a long noncoding RNA (lncRNA), is an oncogenic driver in HCC. In the present study, we investigated the significance of the NEAT1 gene in association with CD44 expression in liver CSCs of human HCC cell lines. The CSC properties were evaluated by spheroid culture, CSC marker expression, and sensitivity to anti-cancer drugs. The expression of both NEAT1 variant 1 (NEAT1v1) and variant 2 (NEAT1v2) as well as CD44 was significantly increased in the spheroid culture, compared with that in monolayer culture. Overexpression of Neat1v1, but not Neat1v2, enhanced the CSC properties, while knockout of the NEAT1 gene suppressed them. CD44 expression was increased by the overexpression of Neat1v1 and abrogated by NEAT1 knockout. The overexpression of NEAT1v1 restored the CSC properties and CD44 expression in NEAT1-knockout cells. NEAT1v1 expression in HCC tissues was correlated with poor prognosis and CD44 expression. These results suggest that NEAT1v1 is required for CD44 expression. To our surprise, NEAT1v1 also restored the CSC properties even in CD44-deficient cells, suggesting that NEAT1v1 maintains the properties of CSCs in a CD44-independent manner.
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Affiliation(s)
- Shigemi Koyama
- Division of Molecular and Genetic Medicine, Graduate School of Medicine, Tottori University, 86 Nishi-cho, Yonago 683-8503, Japan
| | - Hiroyuki Tsuchiya
- Division of Molecular and Genetic Medicine, Graduate School of Medicine, Tottori University, 86 Nishi-cho, Yonago 683-8503, Japan
- Correspondence: ; Tel./Fax: +81-859-38-6435
| | - Masataka Amisaki
- Division of Surgical Oncology, Department of Surgery, Faculty of Medicine, Tottori University, 86 Nishi-cho, Yonago 683-8503, Japan
| | - Hiromi Sakaguchi
- Division of Radiology, Department of Pathophysiological and Therapeutic Science, Faculty of Medicine, Tottori University, 86 Nishi-cho, Yonago 683-8503, Japan
| | - Soichiro Honjo
- Division of Surgical Oncology, Department of Surgery, Faculty of Medicine, Tottori University, 86 Nishi-cho, Yonago 683-8503, Japan
| | - Yoshiyuki Fujiwara
- Division of Surgical Oncology, Department of Surgery, Faculty of Medicine, Tottori University, 86 Nishi-cho, Yonago 683-8503, Japan
| | - Goshi Shiota
- Division of Molecular and Genetic Medicine, Graduate School of Medicine, Tottori University, 86 Nishi-cho, Yonago 683-8503, Japan
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24
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Yang T, Wen Y, Li J, Tan T, Yang J, Pan J, Hu C, Yao Y, Zhang J, Li S, Xia H, He J, Zou Y. Association of CMYC polymorphisms with hepatoblastoma risk. Transl Cancer Res 2020; 9:849-855. [PMID: 35117430 PMCID: PMC8798278 DOI: 10.21037/tcr.2019.12.19] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 11/26/2019] [Indexed: 02/05/2023]
Abstract
BACKGROUND Single-nucleotide polymorphisms (SNPs) in genes may affect gene expression and contribute to cancer susceptibility. This study aimed to explore the association between CMYC gene polymorphisms and hepatoblastoma risk. METHODS Hepatoblastoma patients and cancer-free controls were recruited and matched by age and sex. Genotypes were determined by TaqMan, and the strength of the association of interest was determined by calculating odds ratios (ORs) and 95% confidence intervals (CIs). The distributions of various CMYC genotypes among subjects were recorded, followed by analyses of associations between CMYC polymorphisms and hepatoblastoma risk. RESULTS A total of 213 hepatoblastoma patients and 958 cancer-free controls were enrolled. No significant associations between the CMYC rs4645943 and rs2070583 polymorphisms and hepatoblastoma risk were found (all P>0.05). In stratification analysis based on age, sex, and clinical stage, the CMYC rs4645943 and rs2070583 polymorphisms were not associated with hepatoblastoma susceptibility (all P>0.05). CONCLUSIONS Thus, the CMYC rs4645943 and rs2070583 polymorphisms were not associated with hepatoblastoma risk in the study cohort.
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Affiliation(s)
- Tianyou Yang
- Department of Pediatric Surgery, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - Yang Wen
- First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, China
| | - Jiahao Li
- Department of Pediatric Surgery, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - Tianbao Tan
- Department of Pediatric Surgery, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - Jiliang Yang
- Department of Pediatric Surgery, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - Jing Pan
- Department of Pediatric Surgery, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - Chao Hu
- Department of Pediatric Surgery, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - Yuxiao Yao
- Department of Pediatric Surgery, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - Jiao Zhang
- Department of Pediatric Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Suhong Li
- Department of Pathology, Children Hospital and Women Health Center of Shanxi, Taiyuan 030002, China
| | - Huimin Xia
- Department of Pediatric Surgery, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - Jing He
- Department of Pediatric Surgery, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - Yan Zou
- Department of Pediatric Surgery, Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou 510623, China
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25
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Gu L, Zhu Y, Lin X, Tan X, Lu B, Li Y. Stabilization of FASN by ACAT1-mediated GNPAT acetylation promotes lipid metabolism and hepatocarcinogenesis. Oncogene 2020; 39:2437-2449. [PMID: 31974474 DOI: 10.1038/s41388-020-1156-0] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 12/24/2019] [Accepted: 01/10/2020] [Indexed: 11/09/2022]
Abstract
Metabolic alteration for adaptation of the local environment has been recognized as a hallmark of cancer. GNPAT dysregulation has been implicated in hepatocellular carcinoma (HCC). However, the precise posttranslational regulation of GNPAT is still undiscovered. Here we show that ACAT1 is upregulated in response to extra palmitic acid (PA). ACAT1 acetylates GNPAT at K128, which represses TRIM21-mediated GNPAT ubiquitination and degradation. Conversely, GNPAT deacetylation by SIRT4 antagonizes ACAT1's function. GNPAT represses TRIM21-mediated FASN degradation and promotes lipid metabolism. Furthermore, shRNA-mediated ACAT1 ablation and acetylation deficiency of GNPAT repress lipid metabolism and tumor progression in xenograft and DEN/CCl4-induced HCC. Otherwise, ACAT1 inhibitor combination with sorafenib enormously retards tumor formation in mice. Collectively, we demonstrate that stabilization of FASN by ACAT1-mediated GNPAT acetylation plays a critical role in hepatocarcinogenesis.
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Affiliation(s)
- Li Gu
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan, 430072, China. .,Medical Research Institute, School of Medicine, Wuhan University, Wuhan, 430071, China.
| | - Yahui Zhu
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan, 430072, China.,Medical Research Institute, School of Medicine, Wuhan University, Wuhan, 430071, China
| | - Xi Lin
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan, 430072, China.,Medical Research Institute, School of Medicine, Wuhan University, Wuhan, 430071, China
| | - Xingyu Tan
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan, 430072, China.,Medical Research Institute, School of Medicine, Wuhan University, Wuhan, 430071, China
| | - Bingjun Lu
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan, 430072, China.,Medical Research Institute, School of Medicine, Wuhan University, Wuhan, 430071, China
| | - Youjun Li
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan, 430072, China. .,Medical Research Institute, School of Medicine, Wuhan University, Wuhan, 430071, China.
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26
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Madadi S, Schwarzenbach H, Saidijam M, Mahjub R, Soleimani M. Potential microRNA-related targets in clearance pathways of amyloid-β: novel therapeutic approach for the treatment of Alzheimer's disease. Cell Biosci 2019; 9:91. [PMID: 31749959 PMCID: PMC6852943 DOI: 10.1186/s13578-019-0354-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 11/01/2019] [Indexed: 02/07/2023] Open
Abstract
Imbalance between amyloid-beta (Aβ) peptide synthesis and clearance results in Aβ deregulation. Failure to clear these peptides appears to cause the development of Alzheimer's disease (AD). In recent years, microRNAs have become established key regulators of biological processes that relate among others to the development and progression of neurodegenerative diseases, such as AD. This review article gives an overview on microRNAs that are involved in the Aβ cascade and discusses their inhibitory impact on their target mRNAs whose products participate in Aβ clearance. Understanding of the mechanism of microRNA in the associated signal pathways could identify novel therapeutic targets for the treatment of AD.
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Affiliation(s)
- Soheil Madadi
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Heidi Schwarzenbach
- Department of Tumor Biology, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany
| | - Massoud Saidijam
- Department of Genetics and Molecular Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Reza Mahjub
- Department of Pharmaceutics, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Meysam Soleimani
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran
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27
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Ahi EP, Richter F, Lecaudey LA, Sefc KM. Gene expression profiling suggests differences in molecular mechanisms of fin elongation between cichlid species. Sci Rep 2019; 9:9052. [PMID: 31227799 PMCID: PMC6588699 DOI: 10.1038/s41598-019-45599-w] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 06/11/2019] [Indexed: 01/09/2023] Open
Abstract
Comparative analyses of gene regulation inform about the molecular basis of phenotypic trait evolution. Here, we address a fin shape phenotype that evolved multiple times independently across teleost fish, including several species within the family Cichlidae. In a previous study, we proposed a gene regulatory network (GRN) involved in the formation and regeneration of conspicuous filamentous elongations adorning the unpaired fins of the Neolamprologus brichardi. Here, we tested the members of this network in the blockhead cichlid, Steatocranus casuarius, which displays conspicuously elongated dorsal and moderately elongated anal fins. Our study provided evidence for differences in the anatomy of fin elongation and suggested gene regulatory divergence between the two cichlid species. Only a subset of the 20 genes tested in S. casuarius showed the qPCR expression patterns predicted from the GRN identified in N. brichardi, and several of the gene-by-gene expression correlations differed between the two cichlid species. In comparison to N. brichardi, gene expression patterns in S. casuarius were in better (but not full) agreement with gene regulatory interactions inferred in zebrafish. Within S. casuarius, the dorsoventral asymmetry in ornament expression was accompanied by differences in gene expression patterns, including potential regulatory differentiation, between the anal and dorsal fin.
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Affiliation(s)
- Ehsan Pashay Ahi
- Institute of Biology, University of Graz, Universitätsplatz 2, A-8010, Graz, Austria. .,Department of Comparative Physiology, Uppsala University, Norbyvägen 18A, SE-75 236, Uppsala, Sweden.
| | - Florian Richter
- Institute of Biology, University of Graz, Universitätsplatz 2, A-8010, Graz, Austria
| | | | - Kristina M Sefc
- Institute of Biology, University of Graz, Universitätsplatz 2, A-8010, Graz, Austria
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28
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Zhang Q, Li X, Cui K, Liu C, Wu M, Prochownik EV, Li Y. The MAP3K13-TRIM25-FBXW7α axis affects c-Myc protein stability and tumor development. Cell Death Differ 2019; 27:420-433. [PMID: 31186535 DOI: 10.1038/s41418-019-0363-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 05/17/2019] [Accepted: 05/28/2019] [Indexed: 12/13/2022] Open
Abstract
c-Myc (Myc) is a master transcription factor that is often deregulated and highly expressed by at least 50% of cancers. In many cases, Myc protein levels correlate with resistance to therapy and poor prognosis. However, effective direct inhibition of Myc by pharmacologic approaches has remained unachievable. Here, we identify MAP3K13 as a positive regulator of Myc to promote tumor development. Our findings show that MAP3K13 upregulation is predictive of poor outcomes in patients with hepatocellular carcinoma (HCC). Mechanistically, MAP3K13 phosphorylates the E3 ubiquitin ligase TRIM25 at Ser12 to decrease its polyubiquitination and proteasomal degradation. This newly stabilized TRIM25 then directly ubiquitinates Lys412 of FBXW7α, a core subunit of the SKP1-Cullin-F-box (SCF) ubiquitin ligase complex involved in Myc ubiquitination, thereby stabilizing Myc. Together, these results reveal a novel regulatory pathway that supervises Myc protein stability via the MAP3K13-TRIM25-FBXW7α signaling axis. In addition, they provide a potential therapeutic target in Myc over-expressing human cancers.
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Affiliation(s)
- Qiang Zhang
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, 430072, Wuhan, China.,Medical Research Institute, School of Medicine, Wuhan University, 430071, Wuhan, China
| | - Xu Li
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, 430072, Wuhan, China.,Medical Research Institute, School of Medicine, Wuhan University, 430071, Wuhan, China
| | - Kasa Cui
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, 430072, Wuhan, China.,Medical Research Institute, School of Medicine, Wuhan University, 430071, Wuhan, China
| | - Cheng Liu
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, 430072, Wuhan, China.,Medical Research Institute, School of Medicine, Wuhan University, 430071, Wuhan, China
| | - Mingzhi Wu
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, 430072, Wuhan, China.,Medical Research Institute, School of Medicine, Wuhan University, 430071, Wuhan, China
| | - Edward V Prochownik
- Division of Hematology/Oncology, Children's Hospital of Pittsburgh of UPMC, The Department of Microbiology and Molecular Genetics and The Hillman Cancer Center of UPMC, The University of Pittsburgh Medical Center, Pittsburgh, PA, 15224, USA
| | - Youjun Li
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, 430072, Wuhan, China. .,Medical Research Institute, School of Medicine, Wuhan University, 430071, Wuhan, China.
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29
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Abstract
BACKGROUND Cancer cells possess a common metabolic phenotype, rewiring their metabolic pathways from mitochondrial oxidative phosphorylation to aerobic glycolysis and anabolic circuits, to support the energetic and biosynthetic requirements of continuous proliferation and migration. While, over the past decade, molecular and cellular studies have clearly highlighted the association of oncogenes and tumor suppressors with cancer-associated glycolysis, more recent attention has focused on the role of microRNAs (miRNAs) in mediating this metabolic shift. Accumulating studies have connected aberrant expression of miRNAs with direct and indirect regulation of aerobic glycolysis and associated pathways. SCOPE OF REVIEW This review discusses the underlying mechanisms of metabolic reprogramming in cancer cells and provides arguments that the earlier paradigm of cancer glycolysis needs to be updated to a broader concept, which involves interconnecting biological pathways that include miRNA-mediated regulation of metabolism. For these reasons and in light of recent knowledge, we illustrate the relationships between metabolic pathways in cancer cells. We further summarize our current understanding of the interplay between miRNAs and these metabolic pathways. This review aims to highlight important metabolism-associated molecular components in the hunt for selective preventive and therapeutic treatments. MAJOR CONCLUSIONS Metabolism in cancer cells is influenced by driver mutations but is also regulated by posttranscriptional gene silencing. Understanding the nuanced regulation of gene expression in these cells and distinguishing rapid cellular responses from chronic adaptive mechanisms provides a basis for rational drug design and novel therapeutic strategies.
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Affiliation(s)
- Ayla V Orang
- Flinders Centre for Innovation in Cancer, Flinders University, Flinders Medical Centre, Adelaide, South Australia 5042, Australia.
| | - Janni Petersen
- Flinders Centre for Innovation in Cancer, Flinders University, Flinders Medical Centre, Adelaide, South Australia 5042, Australia.
| | - Ross A McKinnon
- Flinders Centre for Innovation in Cancer, Flinders University, Flinders Medical Centre, Adelaide, South Australia 5042, Australia.
| | - Michael Z Michael
- Flinders Centre for Innovation in Cancer, Flinders University, Flinders Medical Centre, Adelaide, South Australia 5042, Australia.
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30
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Babu KR, Muckenthaler MU. miR-148a regulates expression of the transferrin receptor 1 in hepatocellular carcinoma. Sci Rep 2019; 9:1518. [PMID: 30728365 PMCID: PMC6365501 DOI: 10.1038/s41598-018-35947-7] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 11/10/2018] [Indexed: 02/07/2023] Open
Abstract
Transferrin receptor 1 (TFR1) is a transmembrane glycoprotein that allows for transferrin-bound iron uptake in mammalian cells. It is overexpressed in various cancers to satisfy the high iron demand of fast proliferating cells. Here we show that in hepatocellular carcinoma (HCC) TFR1 expression is regulated by miR-148a. Within the TFR1 3′UTR we identified and experimentally validated two evolutionarily conserved miRNA response elements (MREs) for miR-148/152 family members, including miR-148a. Interestingly, analyses of RNA sequencing data from patients with liver hepatocellular carcinoma (LIHC) revealed a significant inverse correlation of TFR1 mRNA levels and miR-148a. In addition, TFR1 mRNA levels were significantly increased in the tumor compared to matched normal healthy tissue, while miR-148a levels are decreased. Functional analysis demonstrated post-transcriptional regulation of TFR1 by miR-148a in HCC cells as well as decreased HCC cell proliferation upon either miR-148a overexpression or TFR1 knockdown. We hypothesize that decreased expression of miR-148a in HCC may elevate transferrin-bound iron uptake, increasing cellular iron levels and cell proliferation.
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Affiliation(s)
- Kamesh R Babu
- Department of Pediatric Hematology, Oncology, and Immunology, University of Heidelberg, Heidelberg, Germany.,Molecular Medicine Partnership Unit, University of Heidelberg, Heidelberg, Germany
| | - Martina U Muckenthaler
- Department of Pediatric Hematology, Oncology, and Immunology, University of Heidelberg, Heidelberg, Germany. .,Molecular Medicine Partnership Unit, University of Heidelberg, Heidelberg, Germany.
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31
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Sun G, Ding X, Bi N, Wang Z, Wu L, Zhou W, Zhao Z, Wang J, Zhang W, Fan J, Zhang W, Dong X, Lv N, Song Y, Zhan Q, Wang L. Molecular predictors of brain metastasis-related microRNAs in lung adenocarcinoma. PLoS Genet 2019; 15:e1007888. [PMID: 30707694 PMCID: PMC6374053 DOI: 10.1371/journal.pgen.1007888] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 02/13/2019] [Accepted: 12/11/2018] [Indexed: 02/07/2023] Open
Abstract
Brain metastasis (BM) is a major complication of lung adenocarcinoma (LAD). An investigation of the pathogenic mechanisms of BM, as well as the identification of appropriate molecular markers, is necessary. The aim of this study was to determine the expression patterns of microRNAs (miRNAs) in LAD with BM, and to investigate the biological role of these miRNAs during tumorigenesis. miRNA array profiles were used to identify BM-associated miRNAs. These miRNAs were independently validated in 155 LAD patients. Several in vivo and in vitro assays were performed to verify the effects of miRNAs on BM. We identified six miRNAs differentially expressed in patients with BM as compared to patients with BM. Of these, miR-4270 and miR-423-3p were further investigated. miR-4270 and miR-423-3p directly targeted MMP19 and P21, respectively, to influence cell viability, migration, and colony formation in vitro. miR-4270 downregulation and miR-423-3p upregulation was associated with an increased risk of BM in LAD patients. Thus, our results suggested that miR-4270 and miR-423-3p might play an important role in BM pathogenesis in LAD patients, and that these miRNAs might be useful prognostic and clinical treatment targets. Brain metastasis (BM) is a major complication of lung carcinoma. Here, we aimed to identify the key miRNAs involved in BM lung cancer. We first profiled miRNA expression in 32 tissues from NSCLC patients with BM and 55 tissues from NSCLC patients without BM. We independently validated our results in 68 additional tissues from NSCLC patients. Based on our results, we identified a panel of miRNAs that distinguish BM lung adenocarcinomas from non-BM We report here for the first time that either miR-4270 downregulation or miR-423-3p upregulation significantly increased cell proliferation, colony formation, and migration in vitro. miR-4270 and miR-423-3p increased the risk of BM in mouse models by targeting MMP19 and P21, respectively. Our results suggested that miR-4270 and miR-423-3p might be useful markers of BM in lung adenocarcinoma.
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Affiliation(s)
- Guogui Sun
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Department of Radiation Oncology, North China University of Science and Technology Affiliated People's Hospital, Hebei, China
| | - Xiao Ding
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Department of Radiation Oncology, Shandong Provincial Hospital, Shandong, China
| | - Nan Bi
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhiwu Wang
- Department of Radiation Oncology, North China University of Science and Technology Affiliated People's Hospital, Hebei, China
| | - Lihong Wu
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Wei Zhou
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zitong Zhao
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jingbo Wang
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Weimin Zhang
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jing Fan
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - WenJue Zhang
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xin Dong
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Ning Lv
- Department of Pathology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yongmei Song
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- * E-mail: (YS); (QZ); (LHW)
| | - Qimin Zhan
- State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Laboratory of Molecular Oncology, Peking University Cancer Hospital and Institute, Beijing, China
- * E-mail: (YS); (QZ); (LHW)
| | - LuHua Wang
- Department of Radiation Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- * E-mail: (YS); (QZ); (LHW)
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Swier LJYM, Dzikiewicz-Krawczyk A, Winkle M, van den Berg A, Kluiver J. Intricate crosstalk between MYC and non-coding RNAs regulates hallmarks of cancer. Mol Oncol 2018; 13:26-45. [PMID: 30451365 PMCID: PMC6322196 DOI: 10.1002/1878-0261.12409] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 10/10/2018] [Accepted: 10/23/2018] [Indexed: 01/17/2023] Open
Abstract
Myelocytomatosis viral oncogene homolog (MYC) plays an important role in the regulation of many cellular processes, and its expression is tightly regulated at the level of transcription, translation, protein stability, and activity. Despite this tight regulation, MYC is overexpressed in many cancers and contributes to multiple hallmarks of cancer. In recent years, it has become clear that noncoding RNAs add a crucial additional layer to the regulation of MYC and its downstream effects. So far, twenty-five microRNAs and eighteen long noncoding RNAs that regulate MYC have been identified. Thirty-three miRNAs and nineteen lncRNAs are downstream effectors of MYC that contribute to the broad oncogenic role of MYC, including its effects on diverse hallmarks of cancer. In this review, we give an overview of this extensive, multilayered noncoding RNA network that exists around MYC. Current data clearly show explicit roles of crosstalk between MYC and ncRNAs to allow tumorigenesis.
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Affiliation(s)
- Lotteke J Y M Swier
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, The Netherlands
| | | | - Melanie Winkle
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, The Netherlands
| | - Anke van den Berg
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, The Netherlands
| | - Joost Kluiver
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, The Netherlands
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Eichelmann AK, Matuszcak C, Lindner K, Haier J, Hussey DJ, Hummel R. Complex role of miR-130a-3p and miR-148a-3p balance on drug resistance and tumor biology in esophageal squamous cell carcinoma. Sci Rep 2018; 8:17553. [PMID: 30510209 DOI: 10.1038/s41598-018-35799-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 11/09/2018] [Indexed: 12/12/2022] Open
Abstract
miRNAs play a crucial role in cancer development and progression. However, results on the impact of miRNAs on drug sensitivity and tumor biology vary, and most studies to date focussed on either increasing or decreasing miRNA expression levels. Therefore, the current study investigated the role of different expression levels of miR-130a-3p and miR-148a-3p on drug resistance and tumor biology in four esophageal squamous cell carcinoma cell lines. Interestingly, up- and downregulation of both miRNAs significantly increased sensitivity towards chemotherapy. MiRNA modulation also reduced adherence and migration potential, and increased apoptosis rates. Target analyses showed that up- and downregulation of both miRNAs activated the apoptotic p53-pathway via increased expression of either BAX (miR-148a-3p) or Caspase 9 (miR-130a-3p). miR-148a-3p downregulation seemed to mediate its effects primarily via regulation of Bim rather than Bcl-2 levels, whereas we found the opposite scenario following miR-148a-3p upregulation. A similar effect was observed for miR-130a-3p regulating Bcl-2 and XIAP. Our data provide the first evidence that miRNA modulation in both directions may lead to similar effects on chemotherapy response and tumor biology in esophageal squamous cell carcinoma. Most interestingly, up- and downregulation seem to mediate their effects via modulating the balance of several validated or predicted targets.
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Wang J, Liang H, Ge H, Guo X, Gu D, Yuan Y. MicroRNA‑363‑3p inhibits hepatocarcinogenesis by targeting HMGA2 and is associated with liver cancer stage. Mol Med Rep 2018; 19:935-942. [PMID: 30535489 PMCID: PMC6323225 DOI: 10.3892/mmr.2018.9711] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 11/08/2018] [Indexed: 11/06/2022] Open
Abstract
The importance of microRNAs (miRNAs) in cancer development has been widely recognized in recent decades. In the present study, the function and mechanism of miRNA-363-3p (miR-363-3p), formerly characterized as a tumor suppressor, in the hepatocarcinogenesis of liver cancer cells was investigated. Reverse transcription-quantitative polymerase chain reaction (RT-qPCR) was applied to detect the expression of miR-363-3p in liver cancer tissues. Cell proliferation, survival and migration capacities were determined by MTT, colony formation and wound-healing assays, respectively. The targeting of high mobility group AT-hook 2 (HMGA2) mRNA by miR-363-3p was confirmed by bioinformatics analysis, and RT-qPCR, luciferase reporter and western blot assays. The correlation between the expression levels of HMGA2 and miR-363-3p was analyzed. The RT-qPCR results revealed that the levels of miR-363-3p were downregulated in liver cancer tissues. Cellular assays validated that miR-363-3p exerted tumor suppressing functions, including the inhibition of cell proliferation, survival and migration abilities in two liver cancer cell lines. Bioinformatics prediction and subsequent experiments demonstrated that HMGA2 was a direct target of miR-363-3p. Restoration of the expression of HMGA2 in miR-363-3p mimic-transfected cells reversed the tumor suppressing effects caused by miR-363-3p. Finally, there was a significant negative correlation between the expression levels of HMGA2 and miR-363-3p in liver cancer tissues. miR-363-3p was identified as an important tumor suppressor in liver cancer via targeting HMGA2, which may have potential benefits in liver cancer therapy.
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Affiliation(s)
- Jing Wang
- Department of Clinical Laboratory, Tianjin Medical University General Hospital Airport Site, Tianjin 300308, P.R. China
| | - Huimin Liang
- School of Nursing, Tianjin Medical University, Tianjin 300070, P.R. China
| | - Haize Ge
- Department of Clinical Laboratory, The Third Central Hospital of Tianjin, Tianjin 300170, P.R. China
| | - Xinling Guo
- Department of Clinical Laboratory, Tianjin Medical University General Hospital Airport Site, Tianjin 300308, P.R. China
| | - Dongmei Gu
- Department of Clinical Laboratory, Tianjin Medical University General Hospital Airport Site, Tianjin 300308, P.R. China
| | - Yuhua Yuan
- Department of Clinical Laboratory, Tianjin Medical University General Hospital Airport Site, Tianjin 300308, P.R. China
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35
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Gu L, Zhu Y, Lin X, Li Y, Cui K, Prochownik EV, Li Y. Amplification of Glyceronephosphate O-Acyltransferase and Recruitment of USP30 Stabilize DRP1 to Promote Hepatocarcinogenesis. Cancer Res 2018; 78:5808-5819. [PMID: 30143522 DOI: 10.1158/0008-5472.can-18-0340] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 06/06/2018] [Accepted: 08/16/2018] [Indexed: 11/16/2022]
Abstract
Hepatocellular carcinoma (HCC) is a leading cause of cancer-related death worldwide, and the underlying pathophysiology of HCC is highly complex. In this study, we report that, in a bioinformatic screen of 2,783 genes encoding metabolic enzymes, GNPAT, which encodes the enzyme glyceronephosphate O-acyltransferase, is amplified, upregulated, and highly correlated with poor clinical outcome in human patients with HCC. High GNPAT expression in HCC was due to its amplification and transcriptional activation by the c-Myc/KDM1A complex. GNPAT compensated the oncogenic phenotypes in c-Myc-depleted HCC cells. Mechanistically, GNPAT recruited the enzyme USP30, which deubiquitylated and stabilized dynamin-related protein 1 (DRP1), thereby facilitating regulation of mitochondrial morphology, lipid metabolism, and hepatocarcinogenesis. Inhibition of GNPAT and DRP1 dramatically attenuated lipid metabolism and hepatocarcinogenesis. Furthermore, DRP1 mediated the oncogenic phenotypes driven by GNPAT. Taken together, these results indicate that GNPAT and USP30-mediated stabilization of DRP1 play a critical role in the development of HCC.Significance: This study identifies and establishes the role of the enzyme GNPAT in liver cancer progression, which may serve as a potential therapeutic target for liver cancer. Cancer Res; 78(20); 5808-19. ©2018 AACR.
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Affiliation(s)
- Li Gu
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan, China.,Medical Research Institute, School of Medicine, Wuhan University, Wuhan, China
| | - Yahui Zhu
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan, China.,Medical Research Institute, School of Medicine, Wuhan University, Wuhan, China
| | - Xi Lin
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan, China.,Medical Research Institute, School of Medicine, Wuhan University, Wuhan, China
| | - Yajun Li
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan, China.,Medical Research Institute, School of Medicine, Wuhan University, Wuhan, China
| | - Kaisa Cui
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan, China.,Medical Research Institute, School of Medicine, Wuhan University, Wuhan, China
| | - Edward V Prochownik
- Division of Hematology/Oncology, Children's Hospital of Pittsburgh of UPMC, The Department of Microbiology and Molecular Genetics and The Hillman Cancer Center of UPMC, The University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Youjun Li
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan, China. .,Medical Research Institute, School of Medicine, Wuhan University, Wuhan, China
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Nie X, Liu Y, Chen WD, Wang YD. Interplay of miRNAs and Canonical Wnt Signaling Pathway in Hepatocellular Carcinoma. Front Pharmacol 2018; 9:657. [PMID: 29977206 PMCID: PMC6021530 DOI: 10.3389/fphar.2018.00657] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Accepted: 06/01/2018] [Indexed: 12/19/2022] Open
Abstract
Hepatocellular carcinoma is one of the leading causes of cancer death worldwide and the activation of canonical Wnt signaling pathway is universal in hepatocellular carcinoma patients. MicroRNAs are found to participate in the pathogenesis of hepatocellular carcinoma by activating or inhibiting components in the canonical Wnt signaling pathway. Meanwhile, transcriptional activation of microRNAs by canonical Wnt signaling pathway also contributes to the occurrence and progression of hepatocellular carcinoma. Pharmacological inhibition of hepatocellular carcinoma pathogenesis and other cancers by microRNAs are now in clinical trials despite the challenges of identifying efficient microRNAs candidates and safe delivery vehicles. The focus of this review is on the interplay mechanisms between microRNAs and canonical Wnt signaling pathway in hepatocellular carcinoma, and a deep understanding of the crosstalk will promote to develop a better management of this disease.
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Affiliation(s)
- Xiaobo Nie
- Key Laboratory of Receptors-Mediated Gene Regulation and Drug Discovery, School of Medicine, Henan University, Kaifeng, China
| | - Yiran Liu
- Key Laboratory of Receptors-Mediated Gene Regulation and Drug Discovery, School of Medicine, Henan University, Kaifeng, China.,Department of Pathology, Henan Provincial People's Hospital, Zhengzhou, China
| | - Wei-Dong Chen
- Key Laboratory of Receptors-Mediated Gene Regulation and Drug Discovery, School of Medicine, Henan University, Kaifeng, China.,Key Laboratory of Molecular Pathology, School of Basic Medical Science, Inner Mongolia Medical University, Hohhot, China
| | - Yan-Dong Wang
- State Key Laboratory of Chemical Resource Engineering, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, China
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Chen E, Xu X, Liu R, Liu T. Small but Heavy Role: MicroRNAs in Hepatocellular Carcinoma Progression. Biomed Res Int 2018; 2018:6784607. [PMID: 29951542 DOI: 10.1155/2018/6784607] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Accepted: 02/08/2018] [Indexed: 02/06/2023]
Abstract
Hepatocellular carcinoma (HCC), which accounts for 85-90% of primary liver cancer, is the fifth most common malignant tumor and the third leading cause of cancer-related deaths worldwide, but the pathological mechanism of HCC is still not fully elucidated. miRNAs are evolutionarily endogenous small noncoding RNAs that negatively regulate gene expression via posttranscriptional inhibition or target mRNA degradation in several diseases, especially human cancer. Therefore, discovering the roles of miRNAs is appealing to scientific researchers. Emerging evidence has shown that the aberrant expressions of numerous miRNAs are involved in many HCC biological processes. In hepatocarcinogenesis, miRNAs with dysregulated expression can exert their function as oncogenes or tumor suppressors depending on their cellular target during the cell cycle, and in tumor development, differentiation, apoptosis, angiogenesis, metastasis, and progression of the tumor microenvironment. In this review, we summarize current findings on miRNAs and assess their functions to explore the molecular mechanisms of tumor progression in HCC.
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Li H, Feng C, Shi S. miR-196b promotes lung cancer cell migration and invasion through the targeting of GATA6. Oncol Lett 2018; 16:247-252. [PMID: 29928408 PMCID: PMC6006457 DOI: 10.3892/ol.2018.8671] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 05/04/2018] [Indexed: 12/25/2022] Open
Abstract
MicroRNAs (miRNAs) have been proven to regulate gene expression at the protein translation level. miRNA abnormal expression has been associated with the development of lung cancer. In the present study, we aimed to investigate the mechanism of miR-196 in non-small cell lung cancer (NSCLC). The miR-196b and GATA-6 (GATA6) expression levels were examined in NSCLC by RT-qPCR and western blot analysis. Transwell assay was used to assess cell migration and invasion. Moreover, the specific target of miR-196b in NSCLC was verified by the luciferase reporter assay. The expression of miR-196b was higher in both NSCLC tissues and cells than the normal levels. Specifically, the miR-196b mimic group in NSCLC cells markedly promoted cell migration and invasion, while the miR-196b inhibitor group exhibited the opposite effect. Furthermore, GATA6 was verified as a specific target of miR-196b in NSCLC cells and GATA6 could attenuate the migratory and invasive ability of NSCLC cells regulated by miR-196b. In addition, the relationship between GATA6 and miR-196b expression was negatively correlated in NSCLC tissues. Thus, miR-196b enhanced NSCLC cell migration and invasion via the downregulation of GATA6, indicating its potential application in NSCLC diagnosis and therapy.
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Affiliation(s)
- Hongli Li
- Department of Operation Room, Eastern Medical District of Linyi People's Hospital, Linyi, Shandong 276034, P.R. China
| | - Chao Feng
- Department of Surgery, Eastern Medical District of Linyi People's Hospital, Linyi, Shandong 276034, P.R. China
| | - Songtao Shi
- Department of Thoracic Surgery, Eastern Medical District of Linyi People's Hospital, Linyi, Shandong 276034, P.R. China
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Li W, Cui K, Prochownik EV, Li Y. The deubiquitinase USP21 stabilizes MEK2 to promote tumor growth. Cell Death Dis 2018; 9:482. [PMID: 29706623 DOI: 10.1038/s41419-018-0523-z] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 03/16/2018] [Accepted: 03/23/2018] [Indexed: 12/13/2022]
Abstract
Deubiquitinases (DUBs) play essential roles in normal cell proliferation and tumor growth. However, the molecular mechanisms of DUBs on hepatocellular carcinoma (HCC) remains largely unknown. In this study, based on analysis of several HCC datasets, we found that the USP21 gene, which encodes a member of the ubiquitin-specific protease family, is highly amplified and overexpressed in HCCs, with the extent of this up-regulation significantly correlating with poor clinical outcomes. Inhibition of USP21 in HCC cell lines decreased cell proliferation, anchorage-independent growth, cell cycle progression, and in vivo tumor growth. Conversely, ectopic expression of USP21 transformed the normal human hepatocyte line HL-7702 and increased the tumorigenicity of the HCC cell line MHCC97L. Mechanistically, USP21 stabilized MEK2 by decreasing its polyubiquitination at Lys48, thereby activating the ERK signaling pathway. Importantly, MEK2 partially mediated the optimal expression of USP21-mediated oncogenic phenotypes. These findings indicate that USP21-mediated deubiquitination and stabilization of MEK2 play a critical role in HCC development.
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Zhao L, Gu C, Ye M, Zhang Z, Li L, Fan W, Meng Y. Integration analysis of microRNA and mRNA paired expression profiling identifies deregulated microRNA-transcription factor-gene regulatory networks in ovarian endometriosis. Reprod Biol Endocrinol 2018; 16:4. [PMID: 29357938 PMCID: PMC5776778 DOI: 10.1186/s12958-017-0319-5] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Accepted: 12/25/2017] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND The etiology and pathophysiology of endometriosis remain unclear. Accumulating evidence suggests that aberrant microRNA (miRNA) and transcription factor (TF) expression may be involved in the pathogenesis and development of endometriosis. This study therefore aims to survey the key miRNAs, TFs and genes and further understand the mechanism of endometriosis. METHODS Paired expression profiling of miRNA and mRNA in ectopic endometria compared with eutopic endometria were determined by high-throughput sequencing techniques in eight patients with ovarian endometriosis. Binary interactions and circuits among the miRNAs, TFs, and corresponding genes were identified by the Pearson correlation coefficients. miRNA-TF-gene regulatory networks were constructed using bioinformatic methods. Eleven selected miRNAs and TFs were validated by quantitative reverse transcription-polymerase chain reaction in 22 patients. RESULTS Overall, 107 differentially expressed miRNAs and 6112 differentially expressed mRNAs were identified by comparing the sequencing of the ectopic endometrium group and the eutopic endometrium group. The miRNA-TF-gene regulatory network consists of 22 miRNAs, 12 TFs and 430 corresponding genes. Specifically, some key regulators from the miR-449 and miR-34b/c cluster, miR-200 family, miR-106a-363 cluster, miR-182/183, FOX family, GATA family, and E2F family as well as CEBPA, SOX9 and HNF4A were suggested to play vital regulatory roles in the pathogenesis of endometriosis. CONCLUSION Integration analysis of the miRNA and mRNA expression profiles presents a unique insight into the regulatory network of this enigmatic disorder and possibly provides clues regarding replacement therapy for endometriosis.
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Affiliation(s)
- Luyang Zhao
- Department of Gynecology and Obstetrics, People’s Liberation Army (PLA) Medical School, Chinese PLA General Hospital, Beijing, 100853 China
- Department of Gynecology and Obstetrics, Peking University People’s Hospital, Beijing, China
| | - Chenglei Gu
- Department of Gynecology and Obstetrics, People’s Liberation Army (PLA) Medical School, Chinese PLA General Hospital, Beijing, 100853 China
- Department of Gynecology and Obstetrics, the 309th Hospital of Chinese PLA, Beijing, China
| | - Mingxia Ye
- Department of Gynecology and Obstetrics, People’s Liberation Army (PLA) Medical School, Chinese PLA General Hospital, Beijing, 100853 China
| | - Zhe Zhang
- Department of Gynecology and Obstetrics, People’s Liberation Army (PLA) Medical School, Chinese PLA General Hospital, Beijing, 100853 China
| | - Li’an Li
- Department of Gynecology and Obstetrics, People’s Liberation Army (PLA) Medical School, Chinese PLA General Hospital, Beijing, 100853 China
| | - Wensheng Fan
- Department of Gynecology and Obstetrics, People’s Liberation Army (PLA) Medical School, Chinese PLA General Hospital, Beijing, 100853 China
| | - Yuanguang Meng
- Department of Gynecology and Obstetrics, People’s Liberation Army (PLA) Medical School, Chinese PLA General Hospital, Beijing, 100853 China
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Han H, Chen Y, Cheng L, Prochownik EV, Li Y. microRNA-206 impairs c-Myc-driven cancer in a synthetic lethal manner by directly inhibiting MAP3K13. Oncotarget 2016; 7:16409-19. [PMID: 26918941 DOI: 10.18632/oncotarget.7653] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Accepted: 02/05/2016] [Indexed: 12/18/2022] Open
Abstract
c-Myc (Myc) is one of the most frequently dysregulated oncogenic transcription factors in human cancer. By functionally screening a microRNA (miR) library, we identified miR-206 as being a synthetic lethal in Myc over-expressing human cancer cells. miR-206 inhibited MAP3K13, which resulted in Myc protein de-stabilization, and an inhibition of anchorage-independent growth and in vivo tumorigenesis by Myc over-expressing human cancer cells. Eliminating MAP3K13 by shRNA recapitulated the effects caused by miR-206, thus supporting the idea that miR-206's effect on Myc was mediated through MAP3K13. Conversely, enforced expression of MAP3K13 stabilized Myc by promoting its N-terminal phosphorylation and enhancing its transcriptional activity. Gene expression analyses of breast cancers expressing high levels of Myc indicated that low miR-206 expression and high MAP3K13 expression correlated with poor patient survival. The critical link between miR-206 and MAP3K13 in the development of Myc over-expressing human cancers suggests potential points of therapeutic intervention for this molecular sub-category.
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Wang Y, Chen T, Huang H, Jiang Y, Yang L, Lin Z, He H, Liu T, Wu B, Chen J, Kamp DW, Liu G. miR-363-3p inhibits tumor growth by targeting PCNA in lung adenocarcinoma. Oncotarget 2017; 8:20133-20144. [PMID: 28423618 PMCID: PMC5386750 DOI: 10.18632/oncotarget.15448] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 01/10/2017] [Indexed: 12/22/2022] Open
Abstract
Increasing evidence suggests that microRNAs play key roles in lung cancer. Our previous study demonstrated that microRNA 363-3p (miR-363-3p) is downregulated in lung cancer tissues. In this study, we demonstrated that overexpression of miR-363-3p inhibits the proliferation and colony formation of A549 and H441 cells, while silencing of miR-363-3p has the converse effects. The anti-oncogenic function of miR-363-3p was verified in a mouse tumor xenograft model. Furthermore, cell cycle analysis showed miR-363-3p can induce S phase arrest by downregulating Cyclin-D1 and upregulating Cyclin-dependent kinase-2 in lung adenocarcinoma cells. Additionally, miR-363-3p enhances cell apoptosis, whereas miR-363-3p inhibitor prevents apoptosis and leads to downregulation of Bax and Bak expression. The anti-proliferative function of miR-363-3p toward lung cancer cells may be explained by its ability to inhibit the activation of the mTOR and ERK signaling pathways. Using target prediction software and luciferase reporter assays, we identified PCNA as a specific target of miR-363-3p. miR-363-3p can decreased the accumulation of endogenous PCNA in lung adenocarcinoma cells. Moreover, exogenous expression of PCNA relieve the inhibition of miR-363-3p on cell proliferation, colony formation and mTOR and ERK signaling pathways. Taken together, our data indicate that miR-363-3p suppresses tumor growth by targeting PCNA in lung adenocarcinoma.
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Affiliation(s)
- Yahong Wang
- Clinical Research Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Ting Chen
- Clinical Research Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Haili Huang
- Clinical Research Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Yun Jiang
- Clinical Research Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Lawei Yang
- Clinical Research Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Ziying Lin
- Clinical Research Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Huijuan He
- Clinical Research Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Tie Liu
- The First Affiliated Hospital, Medical School of Xi'an Jiaotong University, Xi'an, China
| | - Bin Wu
- Department of Respiratory Medicine, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Jie Chen
- Department of Cardiothoracic Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - David W Kamp
- Department of Medicine, Northwestern University Feinberg School of Medicine and Jesse Brown VA Medical Center, Chicago, USA
| | - Gang Liu
- Clinical Research Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China.,Department of Respiratory Medicine, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
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Liu Q, Wang J, Zhao Y, Li CI, Stengel KR, Acharya P, Johnston G, Hiebert SW, Shyr Y. Identification of active miRNA promoters from nuclear run-on RNA sequencing. Nucleic Acids Res 2017; 45:e121. [PMID: 28460090 PMCID: PMC5737662 DOI: 10.1093/nar/gkx318] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 04/13/2017] [Indexed: 12/27/2022] Open
Abstract
The genome-wide identification of microRNA transcription start sites (miRNA TSSs) is essential for understanding how miRNAs are regulated in development and disease. In this study, we developed mirSTP (mirna transcription Start sites Tracking Program), a probabilistic model for identifying active miRNA TSSs from nascent transcriptomes generated by global run-on sequencing (GRO-seq) and precision run-on sequencing (PRO-seq). MirSTP takes advantage of characteristic bidirectional transcription signatures at active TSSs in GRO/PRO-seq data, and provides accurate TSS prediction for human intergenic miRNAs at a high resolution. MirSTP performed better than existing generalized and experiment specific methods, in terms of the enrichment of various promoter-associated marks. MirSTP analysis of 27 human cell lines in 183 GRO-seq and 28 PRO-seq experiments identified TSSs for 480 intergenic miRNAs, indicating a wide usage of alternative TSSs. By integrating predicted miRNA TSSs with matched ENCODE transcription factor (TF) ChIP-seq data, we connected miRNAs into the transcriptional circuitry, which provides a valuable source for understanding the complex interplay between TF and miRNA. With mirSTP, we not only predicted TSSs for 72 miRNAs, but also identified 12 primary miRNAs with significant RNA polymerase pausing alterations after JQ1 treatment; each miRNA was further validated through BRD4 binding to its predicted promoter. MirSTP is available at http://bioinfo.vanderbilt.edu/mirSTP/.
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Affiliation(s)
- Qi Liu
- Center for Quantitative Sciences, Vanderbilt University School of Medicine, Nashville, TN 37232, USA.,Department of Biomedical Informatics, Vanderbilt University School of Medicine, Nashville, TN 37203, USA
| | - Jing Wang
- Center for Quantitative Sciences, Vanderbilt University School of Medicine, Nashville, TN 37232, USA.,Department of Cancer Biology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Yue Zhao
- Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Chung-I Li
- Department of Statistics, National Cheng Kung University, Tainan 70101, Taiwan
| | - Kristy R Stengel
- Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Pankaj Acharya
- Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Gretchen Johnston
- Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Scott W Hiebert
- Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, TN 37232, USA.,Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
| | - Yu Shyr
- Center for Quantitative Sciences, Vanderbilt University School of Medicine, Nashville, TN 37232, USA.,Department of Cancer Biology, Vanderbilt University School of Medicine, Nashville, TN 37232, USA.,Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN 37232, USA.,Department of Biostatistics, Vanderbilt University School of Medicine, Nashville, TN 37232, USA
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Cheng L, Zhu Y, Han H, Zhang Q, Cui K, Shen H, Zhang J, Yan J, Prochownik E, Li Y. MicroRNA-148a deficiency promotes hepatic lipid metabolism and hepatocarcinogenesis in mice. Cell Death Dis 2017; 8:e2916. [PMID: 28703810 PMCID: PMC5550856 DOI: 10.1038/cddis.2017.309] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 05/10/2017] [Accepted: 06/05/2017] [Indexed: 12/13/2022]
Abstract
miRNAs are involved in many physiologic and disease processes by virtue of degrading specific mRNAs or inhibiting their translation. miR-148a has been implicated in the control of tumor growth and cholesterol and triglyceride homeostasis using in vitro or in vivo gene expression- and silencing-based approaches. Here miR-148a knockout (KO) mice were used to investigate the intrinsic role of miR-148a in liver physiology and hepatocarcinogenesis in mice. miR-148a downregulation was found to be correlated with poor clinical outcomes in hepatocellular carcinoma (HCC) patients. Under regular chow diet (RCD) or high fat diet (HFD), miR-148a deletion significantly accelerated DEN-induced hepatocarcinogenesis in mice. Mechanistically, miR-148a deletion promotes lipid metabolic disorders in mice. Moreover, restoration of miR-148a reversed these defects. Finally, miR-148a was found to directly inhibit several key regulators of hepatocarcinogenesis and lipid metabolism. These findings reveal crucial roles for miR-148a in the hepatic lipid metabolism and hepatocarcinogenesis. They further identify miR-148a as a potential therapeutic target for certain liver diseases, including cancer.
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Affiliation(s)
- Li Cheng
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan 430072, China.,Medical Research Institute, School of Medicine, Wuhan University, Wuhan 430071, China
| | - Yahui Zhu
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan 430072, China.,Medical Research Institute, School of Medicine, Wuhan University, Wuhan 430071, China
| | - Han Han
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan 430072, China.,Medical Research Institute, School of Medicine, Wuhan University, Wuhan 430071, China
| | - Qiang Zhang
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan 430072, China.,Medical Research Institute, School of Medicine, Wuhan University, Wuhan 430071, China
| | - Kaisa Cui
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan 430072, China.,Medical Research Institute, School of Medicine, Wuhan University, Wuhan 430071, China
| | - Hongxing Shen
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan 430072, China.,Medical Research Institute, School of Medicine, Wuhan University, Wuhan 430071, China
| | - Jinxiang Zhang
- Department of Surgery, Wuhan Union Hospital, Wuhan 430022, China
| | - Jun Yan
- State Key Laboratory of Pharmaceutical Biotechnology and MOE Key Laboratory of Model Animals for Disease Study, Model Animal Research Center, Nanjing University, Nanjing 210008, China.,Collaborative Innovation Center for Genetics and Development, Shanghai 200438, China
| | - Edward Prochownik
- Division of Hematology/Oncology, Children's Hospital of Pittsburgh of UPMC and The Department of Microbiology and Molecular Genetics, The University of Pittsburgh Medical Center, Pittsburgh, PA 15224, USA
| | - Youjun Li
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan 430072, China.,Medical Research Institute, School of Medicine, Wuhan University, Wuhan 430071, China
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Wang B, Zuo Z, Lv F, Zhao L, Du M, Gao Y. MiR-107 inhibits proliferation of lung cancer cells through regulating TP53 regulated inhibitor of apoptosis 1 (TRIAP1). Open Life Sci 2017. [DOI: 10.1515/biol-2017-0023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
AbstractAimsAccumulating evidence indicates that aberrant expression of miR-107 plays a crucial role in cancers. This study aims to display the function of miR-107 and its novel target genes in the progression of lung cancer.Methods and MaterialMiR-107 or miR-107 inhibitor was transfected into lung cancer cells A549. The levels of miR-107 and TP53 regulated inhibition of apoptosis 1 (TRIAP1) were examined by quantitative real-time Polymerase Chain Reaction (qRT-PCR) analysis and Western Blot. Functionally, MTT and colony formation assays were carried out to test the effect of miR-107 inhibitor and/or small interference RNA (siRNA) targeting TRIAP1 mRNA on proliferation of lung cancer cells. Levels of miR-107 or TRIAP1 were detected in clinical lung cancer samples by using qRT-PCR analysis.ResultsQRT-PCR analysis revealed that miR-107 inhibitor or miR-107 was successfully transfected into A549 cells. Western Blot indicated that miR-107 decreased the expression of TRIAP1 protein in the cells. In contrast, miR-107 inhibitor augmented the levels of TRIAP1 protein. Functionally, miR-107 inhibitor remarkably suppressed A549 cell proliferation, whereas, TRIAP1 siRNAs could abrogate the miR-107 inhibitor-induced proliferation of cells. Then, we validated that TRIAP1 was increased in clinical lung cancer samples. MiR-107 expression was negatively related to TRIAP1 expression in clinical lung cancer samples.ConclusionsMiR-107 suppresses cell proliferation by targeting TRIAP1 in lung cancer. Our finding allows new insights into the mechanisms of lung cancer that is mediated by miR-107.
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Affiliation(s)
- Bing Wang
- Department of Thoracic Surgical Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing100021, China
| | - Zhanjie Zuo
- Thoracic Cancer Treatment Center, Armed police Beijing Corps Hospital, Beijing100027, China
| | - Fang Lv
- Department of Thoracic Surgical Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing100021, China
| | - Liang Zhao
- Department of Thoracic Surgical Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing100021, China
| | - Minjun Du
- Department of Thoracic Surgical Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing100021, China
| | - Yushun Gao
- Department of Thoracic Surgical Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing100021, China
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Shen H, Xing C, Cui K, Li Y, Zhang J, Du R, Zhang X, Li Y. MicroRNA-30a attenuates mutant KRAS-driven colorectal tumorigenesis via direct suppression of ME1. Cell Death Differ 2017; 24:1253-1262. [PMID: 28475173 DOI: 10.1038/cdd.2017.63] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 03/25/2017] [Accepted: 04/03/2017] [Indexed: 12/17/2022] Open
Abstract
Frequent KRAS mutations contribute to multiple cancers including ~40% of human colorectal cancers (CRCs). Systematic screening of 1255 microRNAs (miRNAs) identified miR-30a as a synthetic lethal in KRAS-mutant CRC cells. miR-30a was downregulated in CRCs and repressed by P65. miR-30a directly targeted malic enzyme 1 (ME1) and KRAS, and inhibited anchorage-independent growth and in vivo tumorigenesis by KRAS-mutant CRC cells. ME1 was significantly upregulated in KRAS-mutant CRCs. Eliminating ME1 by short hairpin RNA (shRNA) resulted in obviously decreased NADPH production, levels of triglyceride and fatty acid, and an inhibition of tumorigenicity of KRAS-mutant CRCs. miR-30a overexpression and ME1 suppression attenuated AOM/DSS-induced colorectal tumorigenesis. The critical roles of miR-30a and ME1 in the development of KRAS-mutant CRCs indicate therapy potentials for this subtype of cancer.
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Affiliation(s)
- Hongxing Shen
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan 430072, China.,Medical Research Institute, School of Medicine, Wuhan University, Wuhan 430071, China
| | - Chuan Xing
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan 430072, China.,Medical Research Institute, School of Medicine, Wuhan University, Wuhan 430071, China
| | - Kaisa Cui
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan 430072, China.,Medical Research Institute, School of Medicine, Wuhan University, Wuhan 430071, China
| | - Yunxiao Li
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan 430072, China.,Medical Research Institute, School of Medicine, Wuhan University, Wuhan 430071, China
| | - Jinxiang Zhang
- Department of Surgery, Wuhan Union Hospital, Wuhan 430022, China
| | - Runlei Du
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Xiaodong Zhang
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Youjun Li
- Hubei Key Laboratory of Cell Homeostasis, College of Life Sciences, Wuhan University, Wuhan 430072, China.,Medical Research Institute, School of Medicine, Wuhan University, Wuhan 430071, China
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Karatas OF, Suer I, Yuceturk B, Yilmaz M, Oz B, Guven G, Cansiz H, Creighton CJ, Ittmann M, Ozen M. Identification of microRNA profile specific to cancer stem-like cells directly isolated from human larynx cancer specimens. BMC Cancer 2016; 16:853. [PMID: 27816053 PMCID: PMC5097853 DOI: 10.1186/s12885-016-2863-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2016] [Accepted: 10/04/2016] [Indexed: 12/14/2022] Open
Abstract
Background Emerging evidences proposed that microRNAs are associated with regulation of distinct physio-pathological processes including development of normal stem cells and carcinogenesis. In this study we aimed to investigate microRNA profile of cancer stem-like cells (CSLCs) isolated form freshly resected larynx cancer (LCa) tissue samples. Methods CD133 positive (CD133+) stem-like cells were isolated from freshly resected LCa tumor specimens. MicroRNA profile of 12 pair of CD133+ and CD133− cells was determined using microRNA microarray and differential expressions of selvected microRNAs were validated by quantitative real time PCR (qRT-PCR). Results MicroRNA profiling of CD133+ and CD133− LCa samples with microarray revealed that miR-26b, miR-203, miR-200c, and miR-363-3p were significantly downregulated and miR-1825 was upregulated in CD133+ larynx CSLCs. qRT-PCR analysis in a total of 25 CD133+/CD133− sample pairs confirmed the altered expressions of these five microRNAs. Expressions of miR-26b, miR-200c, and miR-203 were significantly correlated with miR-363-3p, miR-203, and miR-363-3p expressions, respectively. Furthermore, in silico analysis revealed that these microRNAs target both cancer and stem-cell associated signaling pathways. Conclusions Our results showed that certain microRNAs in CD133+ cells could be used as cancer stem cell markers. Based on these results, we propose that this panel of microRNAs might carry crucial roles in LCa pathogenesis through regulating stem cell properties of tumor cells. Electronic supplementary material The online version of this article (doi:10.1186/s12885-016-2863-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Omer Faruk Karatas
- Molecular Biology and Genetics Department, Erzurum Technical University, Erzurum, Turkey
| | - Ilknur Suer
- Department of Medical Genetics, Istanbul University Cerrahpasa Medical School, Istanbul, Turkey
| | - Betul Yuceturk
- Department of Medical Genetics, Istanbul University Cerrahpasa Medical School, Istanbul, Turkey.,Advanced Genomics and Bioinformatics Research Center, The Scientific and Technological Research Council of Turkey (TUBITAK), Gebze, Kocaeli, Turkey
| | - Mehmet Yilmaz
- Department of Otorhinolaryngology, Cerrahpasa Medical School, Istanbul University, Istanbul, Turkey
| | - Buge Oz
- Department of Pathology, Cerrahpasa Medical School, Istanbul University, Istanbul, Turkey
| | - Gulgun Guven
- Department of Medical Genetics, Istanbul University Cerrahpasa Medical School, Istanbul, Turkey
| | - Harun Cansiz
- Department of Otorhinolaryngology, Cerrahpasa Medical School, Istanbul University, Istanbul, Turkey
| | - Chad J Creighton
- Department of Medicine and Dan L. Duncan Cancer Center Division of Biostatistics, Baylor College of Medicine, Houston, TX, USA
| | - Michael Ittmann
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, TX, 77030, USA.,Michael E. DeBakey VAMC, Houston, TX, 77030, USA
| | - Mustafa Ozen
- Department of Medical Genetics, Istanbul University Cerrahpasa Medical School, Istanbul, Turkey. .,Department of Pathology & Immunology, Baylor College of Medicine, Houston, TX, 77030, USA.
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Ji Y, Wang Z, Li Z, Huang N, Chen H, Li B, Hui B. Silencing IGF-II impairs C-myc and N-ras expressions of SMMC-7721 cells via suppressing FAK/PI3K/Akt signaling pathway. Cytokine 2016; 90:44-53. [PMID: 27768959 DOI: 10.1016/j.cyto.2016.10.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [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: 07/11/2016] [Revised: 10/13/2016] [Accepted: 10/15/2016] [Indexed: 12/21/2022]
Abstract
Emerging evidence confirms that insulin-like growth factor -II (IGF-II), oncogenes C-myc and N-ras are an essential regulator for development and growth in hepatocellular carcinoma (HCC). Although our previous study also indicated that IGF-II might upregulate levels of oncogenes C-myc and N-ras in hepatoma carcinoma cells, the molecular mechanism had not been fully elucidated. Herein, we successfully silenced IGF-II expression in SMCC-7721 cells by small RNA interference. Functional analysis showed that knockdown of IGF-II significantly suppressed growth and proliferation of SMMC-7721 cells and decreased C-myc and N-ras mRNA and protein levels. And this function was mediated by the FAK/PI3K/Akt signaling pathway. Taken together, IGF-II siRNA inactivates the FAK/PI3K/Akt signaling pathway, and further reduces cell proliferation, N-ras and C-myc levels in SMMC-7721 cells. Especially, understanding the relationship between IGF-II and oncogenes N-ras and C-myc in cancer cells will provide novel clues for clinic HCC treatment in the future.
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Affiliation(s)
- Yuanyuan Ji
- Scientific Research Center, The Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710004, China
| | - Zhidong Wang
- Geriatric Digestive Surgery, The Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710004, China.
| | - Zongfang Li
- National Local Joint Engineering Research Center of Biodiagnostics and Biotherapy, The Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710004, China
| | - Na Huang
- Scientific Research Center, The Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710004, China
| | - Haiyan Chen
- Scientific Research Center, The Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710004, China
| | - Baohua Li
- Scientific Research Center, The Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710004, China
| | - Bo Hui
- Geriatric Digestive Surgery, The Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an 710004, China
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Mei Y, Wu M. Noncoding RNAs Regulating p53 and c-Myc Signaling. In: Song E, editor. The Long and Short Non-coding RNAs in Cancer Biology. Singapore: Springer; 2016. pp. 337-65. [DOI: 10.1007/978-981-10-1498-7_13] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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50
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Abstract
microRNAs (miRs) are small, non-coding RNAs, which play crucial roles in the development and progression of human cancer. Given that miRs are stable, easy to synthetize and readily introduced into cells, they have been viewed as having potential therapeutic benefit in cancer. c-Myc (Myc) is one of the most commonly deregulated oncogenic transcription factors and has important roles in the pathogenesis of cancer, thus making it an important, albeit elusive therapeutic target. Here we review the miRs that have been identified as being both positive and negative targets for Myc and how these participate in the complex phenotypes that arise as a result of Myc-driven transformation. We also discussseveral recent reports of Myc-synthetic lethal interactions with miRs.These highlight the importance and complexity of miRs in Myc-mediated biological functions and the opportunities for Myc-driven human cancer therapies.
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Affiliation(s)
- Youjun Li
- College of Life Sciences, Wuhan University, Wuhan 430072, China; Medical Research Institute, Wuhan University, Wuhan 430071, China
| | - Yahui Zhu
- College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Edward V Prochownik
- Division of Hematology/Oncology, Children's Hospital of Pittsburgh of UPMC and The Department of Microbiology and Molecular Genetics, The University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania 15224, USA
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