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Tang L, Wang N, Wei X, Huang S, Wang P, Zheng Y, Chen L, Zhang L. Cysteine and glycine-rich protein 2 promotes hypoxic pulmonary vascular smooth muscle cell proliferation through the Wnt3α-β-catenin/lymphoid enhancer-binding factor 1 pathway. J Biochem Mol Toxicol 2022; 36:e23122. [PMID: 35695329 DOI: 10.1002/jbt.23122] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 03/29/2022] [Accepted: 05/29/2022] [Indexed: 11/07/2022]
Abstract
Pulmonary hypertension (PH) is mainly characterized by abnormal pulmonary vascular hyperplasia and vascular remodeling, but its mechanism is complicated and currently unclear. Cysteine and glycine-rich protein 2 (Csrp2) has been reported to promote cell proliferation and migration, and affect cell cycle progression. As a new invasive actin-binding factor, Csrp2 increased the invasion and even metastasis of some cancer cells. It was associated with tumor recurrence and chemotherapy resistance. However, the role of Csrp2 in PH remains unknown. We found that Csrp2 expression was increased both in pulmonary arteries (PAs) and smooth muscle cells (PASMCs) in PH. Csrp2 enhanced PASMC proliferation and phenotypic transition. The Wnt3α-β-catenin/lymphoid enhancer-binding factor 1 (LEF1) pathway is involved in cell proliferation and phenotypic transition regulated by Csrp2 expression. These results suggest that hypoxia downregulates YinYang-1 (YY1) and then increases Csrp2 expression. Increased Csrp2 promotes PASMC proliferation and phenotypic transition by activating the Wnt3α-β-catenin/LEF1 pathways, which leads to pulmonary vascular remodeling and even provides a new theoretical basis for studying the pathogenesis and therapeutic targets of PH.
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Affiliation(s)
- Liyu Tang
- Department of Cardiac Surgery, Fujian Medical University Union Hospital, Fuzhou, China.,Department of Physiology and Pathophysiology, The Key Laboratory of Fujian Province Universities on Ion Channel and Signal Transduction in Cardiovascular Diseases, The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Nan Wang
- Department of Cardiac Surgery, Fujian Medical University Union Hospital, Fuzhou, China.,Department of Physiology and Pathophysiology, The Key Laboratory of Fujian Province Universities on Ion Channel and Signal Transduction in Cardiovascular Diseases, The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Xiaozhen Wei
- Department of Physiology and Pathophysiology, The Key Laboratory of Fujian Province Universities on Ion Channel and Signal Transduction in Cardiovascular Diseases, The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Sirui Huang
- Department of Physiology and Pathophysiology, The Key Laboratory of Fujian Province Universities on Ion Channel and Signal Transduction in Cardiovascular Diseases, The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Pan Wang
- Department of Physiology and Pathophysiology, The Key Laboratory of Fujian Province Universities on Ion Channel and Signal Transduction in Cardiovascular Diseases, The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Yameng Zheng
- Department of Physiology and Pathophysiology, The Key Laboratory of Fujian Province Universities on Ion Channel and Signal Transduction in Cardiovascular Diseases, The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Liangwan Chen
- Department of Cardiac Surgery, Fujian Medical University Union Hospital, Fuzhou, China
| | - Li Zhang
- Department of Cardiac Surgery, Fujian Medical University Union Hospital, Fuzhou, China.,Department of Physiology and Pathophysiology, The Key Laboratory of Fujian Province Universities on Ion Channel and Signal Transduction in Cardiovascular Diseases, The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
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2
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Ghafouri-Fard S, Gholipour M, Taheri M. MicroRNA Signature in Melanoma: Biomarkers and Therapeutic Targets. Front Oncol 2021; 11:608987. [PMID: 33968718 PMCID: PMC8100681 DOI: 10.3389/fonc.2021.608987] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 03/30/2021] [Indexed: 12/11/2022] Open
Abstract
Melanoma is the utmost fatal kind of skin neoplasms. Molecular changes occurring during the pathogenic processes of initiation and progression of melanoma are diverse and include activating mutations in BRAF and NRAS genes, hyper-activation of PI3K/AKT pathway, inactivation of p53 and alterations in CDK4/CDKN2A axis. Moreover, several miRNAs have been identified to be implicated in the biology of melanoma through modulation of expression of genes being involved in these pathways. In the current review, we provide a summary of the bulk of information about the role of miRNAs in the pathobiology of melanoma, their possible application as biomarkers and their emerging role as therapeutic targets for this kind of skin cancer.
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Affiliation(s)
- Soudeh Ghafouri-Fard
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mahdi Gholipour
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Taheri
- Urology and Nephrology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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3
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Diagnostic Utility of LEF1 Immunohistochemistry in Differentiating Deep Penetrating Nevi From Histologic Mimics. Am J Surg Pathol 2020; 44:1413-1418. [PMID: 32520758 DOI: 10.1097/pas.0000000000001513] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Deep penetrating nevi (DPNs) are intermediate grade lesions which have the capacity to recur, metastasize, or progress to melanoma. Differentiating DPN from other melanocytic lesions including blue and cellular blue nevi can be diagnostically challenging, and markers to distinguish these entities can be useful. Mutations of the β-catenin and mitogen-activated protein kinase pathways have recently been elucidated as distinctive of DPN. This pathway can subsequently activate lymphoid enhancer-binding factor 1 (LEF1), a transcription factor shown to facilitate the epithelial-mesenchymal transition to propagate tumorigenesis. Seventy-two cases in total were examined on hematoxylin and eosin sections and with β-catenin and LEF1 immunohistochemistry. This included: DPN (14), cellular blue nevi (19), blue nevi (15), congenital melanocytic nevi (12), and melanoma (12). Nuclear expression of LEF1, present throughout the entire depth of the lesion, was noted in 13/14 (93%) of DPN, 0/19 (0%) of cellular blue nevi, 0/15 (0%) of blue nevi, 1/12 (8%) of congenital melanocytic nevi, and 9/12 (75%) of melanoma cases. Nuclear expression of β-catenin, present throughout the entire depth of the lesion, was noted in 14/14 (100%) of DPN, 0/18 (0%) of cellular blue nevi, 0/15 (0%) of blue nevi, 1/12 (8%) of congenital melanocytic nevi, and 1/12 (8%) of melanoma cases. A majority of congenital melanocytic nevi demonstrated a gradient of LEF1 and β-catenin expression with more intense staining superficially and loss of staining with increasing depth. Deep, uniform nuclear LEF1 combined with β-catenin immunohistochemical staining can be useful in distinguishing DPN from histologic mimics.
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An P, Xing J, Peng A, Zhao X, Chang W, Liang N, Cao Y, Li J, Li J, Hou R, Li X, Zhang K. The regulation of dermal mesenchymal stem cells on keratinocytes apoptosis. Cell Tissue Bank 2020; 22:57-65. [PMID: 32990869 DOI: 10.1007/s10561-020-09865-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 09/18/2020] [Indexed: 11/26/2022]
Abstract
Dermal mesenchymal stem cells (DMSCs) are progenitor cells with the capacity of self-renewal, multilineage differentiation, and immunomodulation, which were reported to induce the proliferation of keratinocytes, however the regulation on keratinocytes apoptosis was unknown. In this study, we isolated DMSCs from normal skin and co-cultured with keratinocytes, and then detected apoptosis of keratinocytes by flow cytometry and expression of apoptosis associated proteins by western blot. The mRNA expression profile of normal DMSCs was investigated by RNA sequencing. The results of our study presented that the DMSCs promoted HaCaT cells apoptosis both in early apoptotic state (13.8 vs. 2.9, p < 0.05) and late apoptotic state (4.2 vs. 0.7, p < 0.05). The expression of apoptosis associated proteins caspase-3 (3.51 vs. 1.99, p < 0.05) and lymphoid enhancer-binding factor 1 (3.10 vs. 0.83, p < 0.05) were upregulated. However, the cell cycle protein cyclin E1 was similar (9.38 vs. 9.05, p > 0.05). Moreover, 33 genes with the function of induced cell apoptosis were highly expressed in DMSCs, including insulin-like growth factor-binding protein 4 (2828.13), IGFBP7 (1805.69), cathepsin D (1694.34), cathepsin B (CTSB, 1641.40) and dickkopf WNT signaling pathway inhibitor 1 (DKK1, 384.79). This study suggested DMSCs induce the apoptosis of keratinocytes through non-G1/S phase blockade via highly expression of apoptosis inducer.
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Affiliation(s)
- Peng An
- Shanxi Key Laboratory of Stem Cells for Immunological Dermatosis, Institute of Dermatology, Taiyuan Central Hospital of Shanxi Medical University, No. 5 East Third Lane, Jiefang Road, Taiyuan, 030009, Shanxi, China
| | - Jianxiao Xing
- Shanxi Key Laboratory of Stem Cells for Immunological Dermatosis, Institute of Dermatology, Taiyuan Central Hospital of Shanxi Medical University, No. 5 East Third Lane, Jiefang Road, Taiyuan, 030009, Shanxi, China
| | - Aihong Peng
- Shanxi Key Laboratory of Stem Cells for Immunological Dermatosis, Institute of Dermatology, Taiyuan Central Hospital of Shanxi Medical University, No. 5 East Third Lane, Jiefang Road, Taiyuan, 030009, Shanxi, China
| | - Xincheng Zhao
- Shanxi Key Laboratory of Stem Cells for Immunological Dermatosis, Institute of Dermatology, Taiyuan Central Hospital of Shanxi Medical University, No. 5 East Third Lane, Jiefang Road, Taiyuan, 030009, Shanxi, China
| | - Wenjuan Chang
- Shanxi Key Laboratory of Stem Cells for Immunological Dermatosis, Institute of Dermatology, Taiyuan Central Hospital of Shanxi Medical University, No. 5 East Third Lane, Jiefang Road, Taiyuan, 030009, Shanxi, China
| | - Nannan Liang
- Shanxi Key Laboratory of Stem Cells for Immunological Dermatosis, Institute of Dermatology, Taiyuan Central Hospital of Shanxi Medical University, No. 5 East Third Lane, Jiefang Road, Taiyuan, 030009, Shanxi, China
| | - Yue Cao
- Shanxi Key Laboratory of Stem Cells for Immunological Dermatosis, Institute of Dermatology, Taiyuan Central Hospital of Shanxi Medical University, No. 5 East Third Lane, Jiefang Road, Taiyuan, 030009, Shanxi, China
| | - Juan Li
- Shanxi Key Laboratory of Stem Cells for Immunological Dermatosis, Institute of Dermatology, Taiyuan Central Hospital of Shanxi Medical University, No. 5 East Third Lane, Jiefang Road, Taiyuan, 030009, Shanxi, China
| | - Junqin Li
- Shanxi Key Laboratory of Stem Cells for Immunological Dermatosis, Institute of Dermatology, Taiyuan Central Hospital of Shanxi Medical University, No. 5 East Third Lane, Jiefang Road, Taiyuan, 030009, Shanxi, China
| | - Ruixia Hou
- Shanxi Key Laboratory of Stem Cells for Immunological Dermatosis, Institute of Dermatology, Taiyuan Central Hospital of Shanxi Medical University, No. 5 East Third Lane, Jiefang Road, Taiyuan, 030009, Shanxi, China
| | - Xinhua Li
- Shanxi Key Laboratory of Stem Cells for Immunological Dermatosis, Institute of Dermatology, Taiyuan Central Hospital of Shanxi Medical University, No. 5 East Third Lane, Jiefang Road, Taiyuan, 030009, Shanxi, China
| | - Kaiming Zhang
- Shanxi Key Laboratory of Stem Cells for Immunological Dermatosis, Institute of Dermatology, Taiyuan Central Hospital of Shanxi Medical University, No. 5 East Third Lane, Jiefang Road, Taiyuan, 030009, Shanxi, China.
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5
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Lei Y, Chen L, Zhang G, Shan A, Ye C, Liang B, Sun J, Liao X, Zhu C, Chen Y, Wang J, Zhang E, Deng L. MicroRNAs target the Wnt/β‑catenin signaling pathway to regulate epithelial‑mesenchymal transition in cancer (Review). Oncol Rep 2020; 44:1299-1313. [PMID: 32700744 PMCID: PMC7448411 DOI: 10.3892/or.2020.7703] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 06/24/2020] [Indexed: 12/11/2022] Open
Abstract
Epithelial‑mesenchymal transition (EMT), during which cancer cells lose the epithelial phenotype and gain the mesenchymal phenotype, has been verified to result in tumor migration and invasion. Numerous studies have shown that dysregulation of the Wnt/β‑catenin signaling pathway gives rise to EMT, which is characterized by nuclear translocation of β‑catenin and E‑cadherin suppression. Wnt/β‑catenin signaling was confirmed to be affected by microRNAs (miRNAs), several of which are down‑ or upregulated in metastatic cancer cells, indicating their complex roles in Wnt/β‑catenin signaling. In this review, we demonstrated the targets of various miRNAs in altering Wnt/β‑catenin signaling to promote or inhibit EMT, which may elucidate the underlying mechanism of EMT regulation by miRNAs and provide evidence for potential therapeutic targets in the treatment of invasive tumors.
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Affiliation(s)
- Yuhe Lei
- Department of Pharmacy, Shenzhen Hospital of Guangzhou University of Chinese Medicine, Shenzhen, Guangdong 518000, P.R. China
| | - Lei Chen
- Department of Pharmacy, Shenzhen Hospital of Guangzhou University of Chinese Medicine, Shenzhen, Guangdong 518000, P.R. China
| | - Ge Zhang
- Department of Big Data Research of Chinese Medicine, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, Guangdong 510120, P.R. China
| | - Aiyun Shan
- Department of Pharmacy, Shenzhen Hospital of Guangzhou University of Chinese Medicine, Shenzhen, Guangdong 518000, P.R. China
| | - Chunfeng Ye
- Department of Pediatrics, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Bin Liang
- Formula Pattern Research Center, School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Jiayu Sun
- Department of Pharmacy, Shenzhen Hospital of Guangzhou University of Chinese Medicine, Shenzhen, Guangdong 518000, P.R. China
| | - Xin Liao
- Department of Pharmacy, Shenzhen Hospital of Guangzhou University of Chinese Medicine, Shenzhen, Guangdong 518000, P.R. China
| | - Changfeng Zhu
- Department of Pharmacy, Shenzhen Hospital of Guangzhou University of Chinese Medicine, Shenzhen, Guangdong 518000, P.R. China
| | - Yueyue Chen
- Formula Pattern Research Center, School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Jing Wang
- Formula Pattern Research Center, School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Enxin Zhang
- Department of Oncology, Shenzhen Hospital of Guangzhou University of Chinese Medicine, Shenzhen, Guangdong 518000, P.R. China
| | - Lijuan Deng
- Formula Pattern Research Center, School of Traditional Chinese Medicine, Jinan University, Guangzhou, Guangdong 510632, P.R. China
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Mohammadinejad R, Biagioni A, Arunkumar G, Shapiro R, Chang KC, Sedeeq M, Taiyab A, Hashemabadi M, Pardakhty A, Mandegary A, Thiery JP, Aref AR, Azimi I. EMT signaling: potential contribution of CRISPR/Cas gene editing. Cell Mol Life Sci 2020; 77:2701-2722. [PMID: 32008085 PMCID: PMC11104910 DOI: 10.1007/s00018-020-03449-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 12/24/2019] [Accepted: 01/02/2020] [Indexed: 02/06/2023]
Abstract
Epithelial to mesenchymal transition (EMT) is a complex plastic and reversible cellular process that has critical roles in diverse physiological and pathological phenomena. EMT is involved in embryonic development, organogenesis and tissue repair, as well as in fibrosis, cancer metastasis and drug resistance. In recent years, the ability to edit the genome using the clustered regularly interspaced palindromic repeats (CRISPR) and associated protein (Cas) system has greatly contributed to identify or validate critical genes in pathway signaling. This review delineates the complex EMT networks and discusses recent studies that have used CRISPR/Cas technology to further advance our understanding of the EMT process.
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Affiliation(s)
- Reza Mohammadinejad
- Pharmaceutics Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | - Alessio Biagioni
- Section of Experimental Pathology and Oncology, Department of Experimental and Clinical Biomedical Sciences "Mario Serio", University of Florence, Florence, Italy
| | - Ganesan Arunkumar
- Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Rebecca Shapiro
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON, Canada
| | - Kun-Che Chang
- Department of Ophthalmology, School of Medicine, Byers Eye Institute, Stanford University, Palo Alto, CA, 94303, USA
| | - Mohammed Sedeeq
- Division of Pharmacy, College of Health and Medicine, University of Tasmania, Hobart, TAS, Australia
| | - Aftab Taiyab
- Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, L8S 4L8, Canada
| | - Mohammad Hashemabadi
- Department of Biology, Faculty of Sciences, Shahid Bahonar University, Kerman, Iran
- Department of Genetics, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Abbas Pardakhty
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | - Ali Mandegary
- Physiology Research Center, Institute of Neuropharmacology and Department of Toxicology & Pharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | - Jean-Paul Thiery
- Guangzhou Regenerative Medicine and Health, Guangdong Laboratory, Guangzhou, China
| | - Amir Reza Aref
- Department of Medical Oncology, Belfer Center for Applied Cancer Science, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, 02215, USA.
| | - Iman Azimi
- Division of Pharmacy, College of Health and Medicine, University of Tasmania, Hobart, TAS, Australia.
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Yu D, Xu X, Li S, Zhang K. LINC00514 drives osteosarcoma progression through sponging microRNA-708 and consequently increases URGCP expression. Aging (Albany NY) 2020; 12:6793-6807. [PMID: 32325430 PMCID: PMC7202513 DOI: 10.18632/aging.103043] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 03/17/2020] [Indexed: 12/21/2022]
Abstract
Long intergenic nonprotein-coding RNA 00514 (LINC00514) is upregulated in papillary thyroid cancer and contributes to its aggressiveness. In this study, we thoroughly explored the expression profile, specific functions, and relevant molecular mechanism of LINC00514 in osteosarcoma (OS). Herein, LINC00514 was significantly upregulated in OS tissues and cells, and increased LINC00514 expression was closely correlated with tumor size, TNM stage, and distant metastasis. OS patients with high LINC00514 expression had shorter overall survival than those with low LINC00514 expression. LINC00514 interference inhibited OS cell proliferation, colony formation, migration, and invasion in vitro but promoted cell apoptosis and G0/G1 cell cycle arrest. LINC00514 downregulation hindered OS tumor growth in vivo. Mechanistically, LINC00514 functioned as a competing endogenous RNA by directly interacting with microRNA-708-5p (miR-708) and consequently increasing the expression of upregulator of cell proliferation (URGCP). Both miR-708 knockdown and URGCP restoration partially neutralized anticancer activities of LINC00514 silencing in OS cells. LINC00514 increases URGCP expression by acting as a competing endogenous RNA for miR-708, thus exerting oncogenic roles in OS progression. In conclusion, the LINC00514/miR-708/URGCP pathway may be a promising target for drug discovery in the future.
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Affiliation(s)
- Dapeng Yu
- Department of Spine Surgery, Shandong Provincial ENT Hospital, Shandong Provincial ENT Hospital Affiliated to Shandong University, Ji'nan 250022, Shandong, China
| | - Xiangyan Xu
- Department of Traumatic Orthopedics, Shandong Provincial ENT Hospital, Shandong Provincial ENT Hospital Affiliated to Shandong University, Ji'nan 250022, Shandong, China
| | - Sufen Li
- Orthopedic and Soft Tissue Surgery, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Ji'nan 250117, Shandong, China
| | - Kai Zhang
- Department of Orthopedics, Shandong Provincial Third Hospital, Ji'nan 250031, Shandong, China
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8
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He H, Qin M. Long non-coding RNA LEF1-AS1 is involved in the progression of retinoblastoma through regulating the Wnt/β-catenin pathway. Clin Exp Pharmacol Physiol 2020; 47:886-891. [PMID: 31990064 DOI: 10.1111/1440-1681.13263] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Revised: 01/23/2020] [Accepted: 01/23/2020] [Indexed: 12/11/2022]
Abstract
The lymphoid enhancer binding factor 1 antisense RNA 1 (LEF1-AS1) has been suggested to function as a tumour-associated lncRNA in several types of human cancers, but there is no study to date about the role of LEF1-AS1 in retinoblastoma. In our study, LEF1-AS1 expression was increased in retinoblastoma tissues and cell lines compared with paired adjacent normal tissues and the retinal pigment epithelial cell line, respectively. Meanwhile, we found that patients with retinoblastoma with IIRC D-E or undifferentiated type had notably higher levels of LEF1-AS1 expression than those with IIRC A-C or differentiated type. High LEF1-AS1 expression predicted poor disease-free survival in patients with retinoblastoma. The in vitro assays suggested that silencing of LEF1-AS1 suppressed retinoblastoma cell proliferation, migration, and invasion through regulating the Wnt/β-catenin pathway. In conclusion, LEF1-AS1 functions as an oncogenic lncRNA in retinoblastoma.
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Affiliation(s)
- Hua He
- Department of Ophthalmology, The First Hospital of Yulin, Yulin, China
| | - Mu Qin
- Department of Ophthalmology, Affiliated Hospital of Xiangnan University, Chenzhou, China
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9
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Feng T, Zhu Z, Jin Y, Wang H, Mao X, Liu D, Li Y, Lu L, Zuo G. The microRNA‑708‑5p/ZEB1/EMT axis mediates the metastatic potential of osteosarcoma. Oncol Rep 2019; 43:491-502. [PMID: 31894343 PMCID: PMC6967104 DOI: 10.3892/or.2019.7452] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Accepted: 11/22/2019] [Indexed: 12/19/2022] Open
Abstract
MicroRNA‑708‑5p (miR‑708‑5p) and epithelial‑to‑mesenchymal transition (EMT) have been widely identified to contribute to the pathogenesis and progression of multiple cancers. However, the connection between miR‑708‑5p and EMT has not been sufficiently clarified. Therefore, our research aimed to investigate the impact of miR‑708‑5p on EMT and the metastasis of osteosarcoma (OS). We first analyzed the differentially expressed microRNAs (DEmiRNAs) from the GSE70367 dataset. We found that the expression of miR‑708‑5p was lower in OS cells. Overexpression of miR‑708‑5p was able to impair the migration and invasion of OS cells. Moreover, miR‑708‑5p inhibited EMT of OS cells MG63 and SaOS‑2, wherein E‑cadherin was increased, and N‑cadherin, vimentin, and Snail were decreased. Semaphorin 4C (SEMA4C), mitogen‑activated protein kinase kinase kinase 3 (MAP3K3), and zinc finger E‑box‑binding homeobox 1 (ZEB1) were predicted as target genes of miR‑708‑5p by bioinformatics method. Only ZEB1, one of the EMT‑inducing transcription factors, was validated as the direct target gene of miR‑708‑5p in OS cells through dual‑luciferase reporter assay and Western blot analysis. Knockdown of ZEB1 was found to inhibit the metastasis of MG63 and SaOS‑2 cells, whereas ZEB1 over-expression promoted their metastasis. In summary, miR‑708‑5p impaired the metastasis and EMT of OS, which was found to be mediated by inhibition of ZEB1.
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Affiliation(s)
- Tianyu Feng
- Key Laboratory of Diagnostic Medicine Designated by The Chinese Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Zhongkai Zhu
- Department of Cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
| | - Yaqian Jin
- Chongqing Key Laboratory of Traditional Chinese Medicine for Prevention and Cure of Metabolic Diseases, College of Traditional Chinese Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Hao Wang
- Key Laboratory of Diagnostic Medicine Designated by The Chinese Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Xiaohan Mao
- Key Laboratory of Diagnostic Medicine Designated by The Chinese Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Dan Liu
- Key Laboratory of Diagnostic Medicine Designated by The Chinese Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Yiling Li
- Key Laboratory of Diagnostic Medicine Designated by The Chinese Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Lixia Lu
- Key Laboratory of Diagnostic Medicine Designated by The Chinese Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
| | - Guowei Zuo
- Key Laboratory of Diagnostic Medicine Designated by The Chinese Ministry of Education, Department of Laboratory Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
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10
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Luo Y, Ge R, Wu H, Ding X, Song H, Ji H, Li M, Ma Y, Li S, Wang C, Du H. The osteogenic differentiation of human adipose-derived stem cells is regulated through the let-7i-3p/LEF1/β-catenin axis under cyclic strain. Stem Cell Res Ther 2019; 10:339. [PMID: 31753039 PMCID: PMC6873506 DOI: 10.1186/s13287-019-1470-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 10/16/2019] [Accepted: 10/23/2019] [Indexed: 02/06/2023] Open
Abstract
Background The Wnt/β-catenin pathway is involved in the osteogenic differentiation of human adipose-derived stem cells (hASCs) under cyclic strain. Very little is known about the role of microRNAs in these events. Methods Cells were obtained using enzyme digestion methods, and proliferation was detected using Cell Counting Kit 8. Cell cycles and immunophenotypes were detected by flow cytometry. The multilineage potential of hASCs was induced by induction media. Cyclic strain was applied to hASCs (0.5 Hz, 2 h/day, 6 days) to induce osteogenic differentiation and miRNA changes. Bioinformatic and dual-luciferase analyses confirmed lymphoid enhancer factor 1 (LEF1) as a potential target of let-7i-3p. The effect of let-7i-3p on LEF1 in hASCs transfected with a let-7i-3p mimic and inhibitor was analyzed by immunofluorescence. hASCs were transfected with a let-7i-3p mimic, inhibitor, or small interfering RNA (siRNA) against LEF1 and β-catenin. Quantitative real-time PCR (qPCR) and western blotting were performed to examine the osteogenic markers and Wnt/β-catenin pathway at the mRNA and protein levels, respectively. Immunofluorescence and western blotting were performed to confirm the activation of the Wnt/β-catenin pathway. Results Flow cytometry showed that 82.12% ± 5.83% of the cells were in G1 phase and 17.88% ± 2.59% of the cells were in S/G2 phase; hASCs were positive for CD29, CD90, and CD105. hASCs could have the potential for osteogenic, chondrogenic, and adipogenic differentiation. MicroRNA screening via microarray showed that let-7i-3p expression was decreased under cyclic strain. Bioinformatic and dual-luciferase analyses confirmed that LEF1 in the Wnt/β-catenin pathway was the target of let-7i-3p. Under cyclic strain, the osteogenic differentiation of hASCs was promoted by overexpression of LEF1and β-catenin and inhibited by overexpression of let-7i-3p. hASCs were transfected with let-7i-3p mimics and inhibitor. Gain- or loss-of-function analyses of let-7i-3p showed that the osteogenic differentiation of hASCs was promoted by decreased let-7i-3p expression and inhibited by increased let-7i-3p expression. Furthermore, high LEF1 expression inactivated the Wnt/β-catenin pathway in let-7i-3p-enhanced hASCs. In contrast, let-7i-3p inhibition activated the Wnt/β-catenin pathway. Conclusions Let-7i-3p, acting as a negative regulator of the Wnt/β-catenin pathway by targeting LEF1, inhibits the osteogenic differentiation of hASCs under cyclic strain in vitro.
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Affiliation(s)
- Yadong Luo
- Department of Oral and Maxillofacial Surgery, Affiliated Stomatological Hospital of Nanjing Medical University, Hanzhong Road No.136, Nanjing, 210029, Jiangsu Province, People's Republic of China.,Oral Disease Key Laboratory of Jiangsu Province, Nanjing Medical University, Nanjing, 210029, Jiangsu Province, People's Republic of China
| | - Ran Ge
- Department of Nuclear Medicine, Fujian Medical University Union Hospital, Fuzhou, 350001, Fujian Province, People's Republic of China
| | - Heming Wu
- Department of Oral and Maxillofacial Surgery, Affiliated Stomatological Hospital of Nanjing Medical University, Hanzhong Road No.136, Nanjing, 210029, Jiangsu Province, People's Republic of China.,Oral Disease Key Laboratory of Jiangsu Province, Nanjing Medical University, Nanjing, 210029, Jiangsu Province, People's Republic of China
| | - Xu Ding
- Department of Oral and Maxillofacial Surgery, Affiliated Stomatological Hospital of Nanjing Medical University, Hanzhong Road No.136, Nanjing, 210029, Jiangsu Province, People's Republic of China.,Oral Disease Key Laboratory of Jiangsu Province, Nanjing Medical University, Nanjing, 210029, Jiangsu Province, People's Republic of China
| | - Haiyang Song
- Department of Oral and Maxillofacial Surgery, Affiliated Stomatological Hospital of Nanjing Medical University, Hanzhong Road No.136, Nanjing, 210029, Jiangsu Province, People's Republic of China.,Oral Disease Key Laboratory of Jiangsu Province, Nanjing Medical University, Nanjing, 210029, Jiangsu Province, People's Republic of China
| | - Huan Ji
- Department of Oral and Maxillofacial Surgery, Affiliated Stomatological Hospital of Nanjing Medical University, Hanzhong Road No.136, Nanjing, 210029, Jiangsu Province, People's Republic of China.,Oral Disease Key Laboratory of Jiangsu Province, Nanjing Medical University, Nanjing, 210029, Jiangsu Province, People's Republic of China
| | - Meng Li
- Department of Oral and Maxillofacial Surgery, Affiliated Stomatological Hospital of Nanjing Medical University, Hanzhong Road No.136, Nanjing, 210029, Jiangsu Province, People's Republic of China.,Oral Disease Key Laboratory of Jiangsu Province, Nanjing Medical University, Nanjing, 210029, Jiangsu Province, People's Republic of China
| | - Yunan Ma
- Department of Oral and Maxillofacial Surgery, Affiliated Stomatological Hospital of Nanjing Medical University, Hanzhong Road No.136, Nanjing, 210029, Jiangsu Province, People's Republic of China.,Oral Disease Key Laboratory of Jiangsu Province, Nanjing Medical University, Nanjing, 210029, Jiangsu Province, People's Republic of China
| | - Sheng Li
- Department of Oral and Maxillofacial Surgery, Affiliated Stomatological Hospital of Nanjing Medical University, Hanzhong Road No.136, Nanjing, 210029, Jiangsu Province, People's Republic of China.,Oral Disease Key Laboratory of Jiangsu Province, Nanjing Medical University, Nanjing, 210029, Jiangsu Province, People's Republic of China
| | - Chenxing Wang
- Department of Oral and Maxillofacial Surgery, Affiliated Stomatological Hospital of Nanjing Medical University, Hanzhong Road No.136, Nanjing, 210029, Jiangsu Province, People's Republic of China.,Oral Disease Key Laboratory of Jiangsu Province, Nanjing Medical University, Nanjing, 210029, Jiangsu Province, People's Republic of China
| | - Hongming Du
- Department of Oral and Maxillofacial Surgery, Affiliated Stomatological Hospital of Nanjing Medical University, Hanzhong Road No.136, Nanjing, 210029, Jiangsu Province, People's Republic of China. .,Oral Disease Key Laboratory of Jiangsu Province, Nanjing Medical University, Nanjing, 210029, Jiangsu Province, People's Republic of China.
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Sun SN, Hu S, Shang YP, Li LY, Zhou H, Chen JS, Yang JF, Li J, Huang Q, Shen CP, Xu T. Relevance function of microRNA-708 in the pathogenesis of cancer. Cell Signal 2019; 63:109390. [PMID: 31419576 DOI: 10.1016/j.cellsig.2019.109390] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Revised: 08/10/2019] [Accepted: 08/10/2019] [Indexed: 02/07/2023]
Abstract
MicroRNAs (miRNAs) are small non-coding RNAs that regulate gene expression post-transcriptionally responsible for regulating >70% of human genes. MicroRNA-708 (miR-708) is encoded in the intron 1 of the Odd Oz/ten-m homolog 4 (ODZ4) gene. Numerous researches have confirmed that the abnormal expressed miR-708 is involved in the regulation of multiple types of cancer. Notably, the expression level of miR-708 was higher in lung cancer, bladder cancer (BC) and colorectal cancer (CRC) cell lines while lower in hepatocellular carcinoma (HCC), prostate cancer (PC), gastric cancer (GC) and so on. This review provides a current view on the association between miR-708 and several cancers and focuses on the recent studies of miR-708 regulation, discussing its potential as an epigenetic biomarker and therapeutic target for these cancers. In particular, the regulated mechanisms and clinical application of miR-708 in these cancers are also discussed.
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Affiliation(s)
- Si-Nan Sun
- The First Affiliation Hospital of USTC, Division of Life Science and Medicine, University of Science and Technology of China, Hefei, Anhui 230001, China
| | - Shuang Hu
- Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China; The Key laboratory of Anti-inflammatory and Immune medicines, Ministry of Education, Institute for Liver Diseases of Anhui Medical University, Hefei 230032, China
| | | | - Liang-Yun Li
- Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China; The Key laboratory of Anti-inflammatory and Immune medicines, Ministry of Education, Institute for Liver Diseases of Anhui Medical University, Hefei 230032, China
| | - Hong Zhou
- Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China; The Key laboratory of Anti-inflammatory and Immune medicines, Ministry of Education, Institute for Liver Diseases of Anhui Medical University, Hefei 230032, China
| | - Jia-Si Chen
- Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China; The Key laboratory of Anti-inflammatory and Immune medicines, Ministry of Education, Institute for Liver Diseases of Anhui Medical University, Hefei 230032, China
| | - Jun-Fa Yang
- Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China; The Key laboratory of Anti-inflammatory and Immune medicines, Ministry of Education, Institute for Liver Diseases of Anhui Medical University, Hefei 230032, China
| | - Jun Li
- Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China; The Key laboratory of Anti-inflammatory and Immune medicines, Ministry of Education, Institute for Liver Diseases of Anhui Medical University, Hefei 230032, China
| | - Qiang Huang
- The First Affiliation Hospital of USTC, Division of Life Science and Medicine, University of Science and Technology of China, Hefei, Anhui 230001, China.
| | - Chuan-Pu Shen
- Teaching and Research Department of Traditional Chinese Medicine, Anhui Medical University, Hefei 230032, China.
| | - Tao Xu
- Anhui Province Key Laboratory of Major Autoimmune Diseases, Anhui Institute of Innovative Drugs, School of Pharmacy, Anhui Medical University, Hefei 230032, China; The Key laboratory of Anti-inflammatory and Immune medicines, Ministry of Education, Institute for Liver Diseases of Anhui Medical University, Hefei 230032, China.
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He J, Xiang D, Lin Y. MicroRNA‑708 inhibits the proliferation and invasion of osteosarcoma cells by directly targeting ZEB1. Mol Med Rep 2019; 19:3948-3954. [PMID: 30864726 DOI: 10.3892/mmr.2019.10013] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 02/08/2019] [Indexed: 01/13/2023] Open
Abstract
Numerous microRNAs (miRNAs) have been identified as aberrantly expressed in osteosarcoma (OS). miRNAs serve important roles in the pathogenesis of OS as oncogenes or tumor suppressors. Recent studies revealed that miR‑708‑5p (miR‑708) was dysregulated in various types of human cancer; however, its roles and underlying molecular mechanisms in OS remain unknown. Therefore, the present study aimed to determine miR‑708 expression in OS, investigate the roles of miR‑708 in the progression of OS and reveal the potential mechanisms involved. It was demonstrated using reverse transcription‑polymerase chain reaction that miR‑708 was downregulated in OS tissues and cell lines. Cell Counting Kit‑8 and Transwell assays revealed that miR‑708 overexpression suppressed the proliferation and invasion of OS cells in vitro. Additionally, zinc finger E‑box binding homeobox 1 (ZEB1) was validated as a direct target gene of miR‑708 in OS cells. ZEB1 was upregulated in OS tissues; elevated ZEB1 expression was negatively correlated with the levels of miR‑708 expression. Rescue experiments indicated that ZEB1 reintroduction significantly counteracted the inhibitory effects of miR‑708 overexpression on the proliferation and invasion of OS cells. The findings may improve understanding of the roles of miR‑708 in the development of OS, and suggest that miR‑708 may be a potential novel therapeutic target in the treatment of patients with this disease.
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Affiliation(s)
- Jun He
- Department of Orthopedics, The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan 610500, P.R. China
| | - Deng Xiang
- Department of Orthopedics, The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan 610500, P.R. China
| | - Yanshui Lin
- Department of Orthopedics, The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan 610500, P.R. China
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Zhang P, Zhang M, Yu D, Liu W, Hu L, Zhang B, Zhou Q, Cao Z. Lycorine inhibits melanoma cell migration and metastasis mainly through reducing intracellular levels of β-catenin and matrix metallopeptidase 9. J Cell Physiol 2018; 234:10566-10575. [PMID: 30565685 DOI: 10.1002/jcp.27732] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 10/18/2018] [Indexed: 12/19/2022]
Abstract
Metastatic melanoma accounts for 60% of death for skin cancer. Although great efforts have been made to treat the disease, effective drugs against metastatic melanoma still lack at the clinical setting. In the current study, we found that lycorine, a small molecule of isoquinoline alkaloid, significantly suppressed melanoma cell migration and invasion in vitro, and decreased the metastasis of melanoma cells to lung tissues in tumor-bearing mice, resulting in significant prolongation of the survival of the mice without obvious toxicity. Molecular mechanistic studies revealed that lycorine significantly reduced intracellular levels of β-catenin protein through degradation of the protein via the ubiquitin-proteasome pathway, and decreased the expression of β-catenin downstream prometastatic matrix metallopeptidase 9 and Axin2 genes. Collectively, our findings support the notion that targeting the oncogenic β-catenin by lycorine is a new option to inhibit melanoma cell metastasis, providing a good drug candidate potential for development novel therapeutics against metastatic melanoma.
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Affiliation(s)
- Pan Zhang
- Cyrus Tang Hematology Center, Jiangsu Institute of Hematology, 2011 Collaborative Innovation Center of Hematology, Soochow University, Suzhou, Jiangsu, P. R. China
| | - Mengli Zhang
- Cyrus Tang Hematology Center, Jiangsu Institute of Hematology, 2011 Collaborative Innovation Center of Hematology, Soochow University, Suzhou, Jiangsu, P. R. China
| | - Di Yu
- Wuxi School of Medicine, Jiangnan University, Wuxi, China
| | - Wenming Liu
- State Key Laboratory of Molecular Biology, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, Shanghai, China
| | - Lin Hu
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, China
| | - Bin Zhang
- Cyrus Tang Hematology Center, Jiangsu Institute of Hematology, 2011 Collaborative Innovation Center of Hematology, Soochow University, Suzhou, Jiangsu, P. R. China
| | - Quansheng Zhou
- Cyrus Tang Hematology Center, Jiangsu Institute of Hematology, 2011 Collaborative Innovation Center of Hematology, Soochow University, Suzhou, Jiangsu, P. R. China
| | - Zhifei Cao
- Cyrus Tang Hematology Center, Jiangsu Institute of Hematology, 2011 Collaborative Innovation Center of Hematology, Soochow University, Suzhou, Jiangsu, P. R. China
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MicroRNA Expression Analysis of In Vitro Dedifferentiated Human Pancreatic Islet Cells Reveals the Activation of the Pluripotency-Related MicroRNA Cluster miR-302s. Int J Mol Sci 2018; 19:ijms19041170. [PMID: 29649109 PMCID: PMC5979342 DOI: 10.3390/ijms19041170] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 04/06/2018] [Accepted: 04/09/2018] [Indexed: 12/12/2022] Open
Abstract
β-cell dedifferentiation has been recently suggested as an additional mechanism contributing to type-1 and to type-2 diabetes pathogenesis. Moreover, several studies demonstrated that in vitro culture of native human pancreatic islets derived from non-diabetic donors resulted in the generation of an undifferentiated cell population. Additional evidence from in vitro human β-cell lineage tracing experiments, demonstrated that dedifferentiated cells derive from β-cells, thus representing a potential in vitro model of β-cell dedifferentiation. Here, we report the microRNA expression profiles analysis of in vitro dedifferentiated islet cells in comparison to mature human native pancreatic islets. We identified 13 microRNAs upregulated and 110 downregulated in islet cells upon in vitro dedifferentiation. Interestingly, among upregulated microRNAs, we observed the activation of microRNA miR-302s cluster, previously defined as pluripotency-associated. Bioinformatic analysis indicated that miR-302s are predicted to target several genes involved in the control of β-cell/epithelial phenotype maintenance; accordingly, such genes were downregulated upon human islet in vitro dedifferentiation. Moreover, we uncovered that cell–cell contacts are needed to maintain low/null expression levels of miR-302. In conclusion, we showed that miR-302 microRNA cluster genes are involved in in vitro dedifferentiation of human pancreatic islet cells and inhibits the expression of multiple genes involved in the maintenance of β-cell mature phenotype.
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Li X, Zhong X, Pan X, Ji Y. Tumor-Suppressive MicroRNA-708 Targets Notch1 to Suppress Cell Proliferation and Invasion in Gastric Cancer. Oncol Res 2018; 26:1317-1326. [PMID: 29444743 PMCID: PMC7844794 DOI: 10.3727/096504018x15179680859017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Growing evidence has demonstrated that numerous microRNAs (miRNAs) may participate in the regulation of gastric carcinogenesis and progression. This phenomenon suggests that gastric cancer-related miRNAs can be identified as effective therapeutic targets for this disease. miRNA-708 (miR-708) has recently been reported to be aberrantly expressed in several types of cancer and contribute to carcinogenesis and progression. However, the expression level, biological roles, and underlying mechanisms of miR-708 in gastric cancer are poorly understood. Here we found that miR-708 was downregulated in gastric cancer tissues and cell lines. Downregulated miR-708 expression was significantly associated with lymphatic metastasis, invasive depth, and TNM stage. Further investigation indicated that ectopic expression of miR-708 prohibited cell proliferation and invasion in gastric cancer. Bioinformatics analysis showed that Notch1 was a potential target of miR-708. Notch1 was further confirmed as a direct target gene of miR-708 in gastric cancer by dual-luciferase reporter assay, reverse transcription quantitative polymerase chain reaction, and Western blot analysis. Furthermore, an inverse association was found between miR-708 and Notch1 mRNA levels in gastric cancer tissues. In addition, restored Notch1 expression rescued the inhibitory effects on gastric cancer cell proliferation and invasion induced by miR-708 overexpression. Our findings highlight the tumor-suppressive roles of miR-708 in gastric cancer and suggest that miR-708 may be investigated as a novel target for gastric cancer treatment.
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Affiliation(s)
- Xuyan Li
- Clinical Laboratory Central, Huizhou Central People's Hospital, Guangdong, P.R. China
| | - Xuanfang Zhong
- Department of Digestion, Huizhou Central People's Hospital, Guangdong, P.R. China
| | - Xiuhua Pan
- Department of Radiotherapy, Huizhou Central People's Hospital, Guangdong, P.R. China
| | - Yan Ji
- Department of Prenatal Diagnosis, Huizhou Central People's Hospital, Guangdong, P.R. China
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