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Zhou J, Xiang H, Cao Z. Dual mechanism of Let-7i in tumor progression. Front Oncol 2023; 13:1253191. [PMID: 37829341 PMCID: PMC10565035 DOI: 10.3389/fonc.2023.1253191] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 09/06/2023] [Indexed: 10/14/2023] Open
Abstract
Let-7i regulates tumors primarily by binding to the 3' untranslated region (3' UTR) of mRNA, which indirectly regulates post-transcriptional gene expression. Let-7i also has an epigenetic function via modulating DNA methylation to directly regulate gene expression. Let-7i performs a dual role by inducing both the promotion and inhibition of various malignancies, depending on its target. The mechanism of Let-7i action involves cancer cell proliferation, migration, invasion, apoptosis, epithelial-mesenchymal transition, EV transmission, angiogenesis, autophagy, and drug resistance sensitization. Let-7i is closely related to cancer, and hence, is a potential biomarker for the diagnosis and prognosis of various cancers. Therapeutically, it can be used to promote an anti-cancer immune response by modifying exosomes, thus exerting a tumor-suppressive effect.
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Affiliation(s)
- Jiapei Zhou
- First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Hongjie Xiang
- Department of Traditional Chinese Medicine, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - Zhiqun Cao
- First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, China
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Qingjie Fuzheng Granule Inhibited the Migration and Invasion of Colorectal Cancer Cells by Regulating the lncRNA ANRIL/let-7a/TGF- β1/Smad Axis. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2020; 2020:5264651. [PMID: 32714407 PMCID: PMC7341385 DOI: 10.1155/2020/5264651] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 06/02/2020] [Indexed: 12/24/2022]
Abstract
Qingjie Fuzheng granule (QFG) promotes cancer cell apoptosis and ameliorates intestinal mucosal damage caused by 5-fluorouracil. However, the antitumor role of QFG in colorectal cancer (CRC) progression remains unclear. In this study, the growth of HCT-8 and HCT116 cells incubated with various concentrations of QFG for 24 and 48 h was evaluated using MTT assays; their abilities of migration and invasion were investigated through wound healing and Transwell assays. The expression of lncRNA ANRIL, let-7a, and the TGF-β1/Smad signaling pathway components was assessed using real-time PCR and western blotting. The results elicited that QFG significantly suppressed the growth of HCT-8 and HCT116 cells; the half-maximal inhibitory concentrations (IC50) of QFG for HCT-8 and HCT116 cells for 48 h were 1.849 and 1.608 mg/mL, respectively. The abilities of wound healing, migration, and invasion of HCT-8 and HCT116 cells were dose-dependently decreased by QFG treatment for 24 h, respectively. QFG decreased the expression of lncRNA ANRIL, TGF-β1, phosphorylated (p)-Smad2/3, Smad4, and N-cadherin and upregulated the expression of let-7a in HCT-8 and HCT116 cells. Collectively, our data demonstrated that QFG inhibited the metastasis of CRC cells by regulating the lncRNA ANRIL/let-7a/TGF-β1/Smad axis, indicating that they might serve as an adjunctive medicine for CRC treatment.
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Viera GM, Salomao KB, de Sousa GR, Baroni M, Delsin LEA, Pezuk JA, Brassesco MS. miRNA signatures in childhood sarcomas and their clinical implications. Clin Transl Oncol 2019; 21:1583-1623. [PMID: 30949930 DOI: 10.1007/s12094-019-02104-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 03/27/2019] [Indexed: 02/06/2023]
Abstract
Progresses in multimodal treatments have significantly improved the outcomes for childhood cancer. Nonetheless, for about one-third of patients with Ewing sarcoma, rhabdomyosarcoma, or osteosarcoma steady remission has remained intangible. Thus, new biomarkers to improve early diagnosis and the development of precision-targeted medicine remain imperative. Over the last decade, remarkable progress has been made in the basic understanding of miRNAs function and in interpreting the contribution of their dysregulation to cancer development and progression. On this basis, this review focuses on what has been learned about the pivotal roles of miRNAs in the regulation of key genes implicated in childhood sarcomas.
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Affiliation(s)
- G M Viera
- Ribeirao Preto School of Medicine, University of Sao Paulo, Ribeirao Preto, Brasil
| | - K B Salomao
- Ribeirao Preto School of Medicine, University of Sao Paulo, Ribeirao Preto, Brasil
| | - G R de Sousa
- Ribeirao Preto School of Medicine, University of Sao Paulo, Ribeirao Preto, Brasil
| | - M Baroni
- Ribeirao Preto School of Medicine, University of Sao Paulo, Ribeirao Preto, Brasil
| | - L E A Delsin
- Ribeirao Preto School of Medicine, University of Sao Paulo, Ribeirao Preto, Brasil
| | - J A Pezuk
- Anhanguera University of Sao Paulo, UNIAN/SP, Sao Paulo, Brasil
| | - M S Brassesco
- Faculty of Philosophy, Sciences and Letters at Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, Brasil.
- Departamento de Biologia, FFCLRP-USP, Av. Bandeirantes, 3900, Bairro Monte Alegre, Ribeirao Preto, SP, CEP 14040-901, Brazil.
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Li SQ, Tu C, Wan L, Chen RQ, Duan ZX, Ren XL, Li ZH. FGF-induced LHX9 regulates the progression and metastasis of osteosarcoma via FRS2/TGF-β/β-catenin pathway. Cell Div 2019; 14:13. [PMID: 31788020 PMCID: PMC6876112 DOI: 10.1186/s13008-019-0056-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 11/09/2019] [Indexed: 01/21/2023] Open
Abstract
Background Fibroblast growth factor (FGF) and tumor growth factor-β (TGFβ) have emerged as pivotal regulators during the progression of osteosarcoma (OS). LHX9 is one crucial transcription factor controlled by FGF, however, its function in OS has not been investigated yet. Methods The expression of LHX9, FRS2, BMP4, TGF-beta R1, SMAD2, beta-catenin and metastasis-related proteins was measured by real-time quantitative PCR (RT-qPCR) and Western blot. CCK-8 assay and colony formation assay were employed to determine the proliferation of OS cells, while scratch wound healing assay and transwell assay were used to evaluate their migration and invasion, respectively. In vivo tumor growth and metastasis were determined by subcutaneous or intravenous injection of OS cells into nude mice. Results LHX9 expression was evidently up-regulated in OS tumor tissues and cell lines. Knockdown of LHX9 impaired the proliferation, migration, invasion and metastasis of OS cells. Mechanistically, LHX9 silencing led to the down-regulation of BMP-4, β-catenin and metastasis-related proteins, which was also observed in beta-catenin knockdown OS cells. By contrast, FRS2 knockdown conduced to the up-regulation of LHX9, BMP4, β-catenin and TGF-βR1, while TGF-beta inhibition repressed the expression of LHX9 and metastasis-related proteins. Additionally, let-7c modulates LHX9 and metastasis-related proteins by suppressing TGF-beta R1 expression on transcriptional level. Conclusions This study revealed LHX9 was essential for the proliferation, migration, invasion, and metastasis of OS cells via FGF and TGF-β/β-catenin signaling pathways.
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Affiliation(s)
- Shuang-Qing Li
- Orthopaedics, Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital, No. 139 Renming Road, Changsha, 410010 Hunan People's Republic of China
| | - Chao Tu
- Orthopaedics, Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital, No. 139 Renming Road, Changsha, 410010 Hunan People's Republic of China
| | - Lu Wan
- Orthopaedics, Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital, No. 139 Renming Road, Changsha, 410010 Hunan People's Republic of China
| | - Rui-Qi Chen
- Orthopaedics, Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital, No. 139 Renming Road, Changsha, 410010 Hunan People's Republic of China
| | - Zhi-Xi Duan
- Orthopaedics, Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital, No. 139 Renming Road, Changsha, 410010 Hunan People's Republic of China
| | - Xiao-Lei Ren
- Orthopaedics, Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital, No. 139 Renming Road, Changsha, 410010 Hunan People's Republic of China
| | - Zhi-Hong Li
- Orthopaedics, Hunan Key Laboratory of Tumor Models and Individualized Medicine, The Second Xiangya Hospital, No. 139 Renming Road, Changsha, 410010 Hunan People's Republic of China
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Sun T, Zhong X, Song H, Liu J, Li J, Leung F, Lu WW, Liu ZL. Anoikis resistant mediated by FASN promoted growth and metastasis of osteosarcoma. Cell Death Dis 2019; 10:298. [PMID: 30931932 PMCID: PMC6443797 DOI: 10.1038/s41419-019-1532-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 03/04/2019] [Accepted: 03/06/2019] [Indexed: 12/12/2022]
Abstract
The pulmonary metastasis of osteosarcoma (OS) occurs commonly, which resulted from anoikis resistant (AR) of tumor cells as reported by previous studies, but the exact roles of AR in osteosarcoma were not fully studied. Our previous investigations showed fatty acid synthase (FASN) was relating to clinical features of patients with OS. In this study, we aim to explore the functions of FASN in the AR OS cells in vitro and in vivo and study the downstream effectors of FASN. In the present study, we used our established cell model to study the AR. We revealed that AR promoted cell proliferation and migration as determined by colony formation assay and transwell assay. In addition, AR assisted tumor growth in vivo. In the AR cells, the expression of FASN was higher. Thus, we constructed lentiviruses to silence or overexpress FASN in four cell lines to study functions of FASN. Silence of FASN reduced cell colonies and migration while overexpression of FASN increased colonies and migration in suspended cells. Loss of functions of FASN induced cell apoptosis in suspended OS cells while gain of function of FASN suppressed apoptosis as determined by flow cytometry. We found the levels of p-ERK1/2 and Bcl-xL declined when FASN was silenced while they increased when FASN was overexpressed. In addition, results showed that the levels of FASN and its potential related molecules (p-ERK1/2 and Bcl-xL) increased in 143B-AR and MG-63-AR cells. In vivo study showed that inhibition of FASN decreased pulmonary metastasis of OS. In conclusion, we showed that anoikis resistant and FASN as two interactional factors facilitated the progress of osteosarcoma.
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Affiliation(s)
- Tianhao Sun
- Department of Orthopedic Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330006, China.,Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Xing Zhong
- Department of Orthopedic Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330006, China.,Division of Chemotherapy, Jiangxi Cancer Hospital, Nanchang, Jiangxi Province, China
| | - Honghai Song
- Department of Orthopedic Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Jiaming Liu
- Department of Orthopedic Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Jingao Li
- Division of Chemotherapy, Jiangxi Cancer Hospital, Nanchang, Jiangxi Province, China
| | - Frankie Leung
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China.
| | - William W Lu
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China. .,Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, 518000, China.
| | - Zhi-Li Liu
- Department of Orthopedic Surgery, The First Affiliated Hospital of Nanchang University, Nanchang, 330006, China.
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Elkhadragy L, Chen M, Miller K, Yang MH, Long W. A regulatory BMI1/let-7i/ERK3 pathway controls the motility of head and neck cancer cells. Mol Oncol 2017; 11:194-207. [PMID: 28079973 PMCID: PMC5288292 DOI: 10.1002/1878-0261.12021] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 10/16/2016] [Accepted: 10/31/2016] [Indexed: 12/16/2022] Open
Abstract
Extracellular signal‐regulated kinase 3 (ERK3) is an atypical mitogen‐activated protein kinase (MAPK), whose biological activity is tightly regulated by its cellular abundance. Recent studies have revealed that ERK3 is upregulated in multiple cancers and promotes cancer cell migration/invasion and drug resistance. Little is known, however, about how ERK3 expression level is upregulated in cancers. Here, we have identified the oncogenic polycomb group protein BMI1 as a positive regulator of ERK3 level in head and neck cancer cells. Mechanistically, BMI1 upregulates ERK3 expression by suppressing the tumor suppressive microRNA (miRNA) let‐7i, which directly targets ERK3 mRNA. ERK3 then acts as an important downstream mediator of BMI1 in promoting cancer cell migration. Importantly, ERK3 protein level is positively correlated with BMI1 level in head and neck tumor specimens of human patients. Taken together, our study revealed a molecular pathway consisting of BMI1, miRNA let‐7i, and ERK3, which controls the migration of head and neck cancer cells, and suggests that ERK3 kinase is a potential new therapeutic target in head and neck cancers, particularly those with BMI1 overexpression.
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Affiliation(s)
- Lobna Elkhadragy
- Department of Biochemistry and Molecular Biology, Boonshoft School of Medicine, Wright State University, Dayton, OH, USA
| | - Minyi Chen
- Department of Biochemistry and Molecular Biology, Boonshoft School of Medicine, Wright State University, Dayton, OH, USA
| | - Kennon Miller
- Department of Pathology, Boonshoft School of Medicine, Wright State University, Dayton, OH, USA
| | - Muh-Hwa Yang
- Institute of Clinic Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Weiwen Long
- Department of Biochemistry and Molecular Biology, Boonshoft School of Medicine, Wright State University, Dayton, OH, USA
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