Mesenchymal stem cells-originated exosomal microRNA-152 impairs proliferation, invasion and migration of thyroid carcino
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ORIGINAL ARTICLE
Mesenchymal stem cells‑originated exosomal microRNA‑152 impairs proliferation, invasion and migration of thyroid carcinoma cells by interacting with DPP4 M. Tang1 · Q. Wang2 · K. Wang2 · F. Wang2 Received: 15 May 2020 / Accepted: 23 August 2020 © Italian Society of Endocrinology (SIE) 2020
Abstract Background Thyroid carcinoma (THCA) is the most prevalent tumor in the endocrine system with an increasing incidence. Recent studies have underscored the function of microRNAs (miRNAs) in THCA. Nevertheless, knowledge regarding the effects of exosomal miRNAs in THCA is still limited. This report intended to probe the regulatory effects of exosomal miR152 on THCA and the underlying mechanism. Methods The expression profile of miR-152 was studied in clinical samples as well as B-CPAP and TPC-1 cells. Transwell, CCK-8, and flow cytometric assays were performed to investigate the roles of miR-152 on invasion, migration, proliferation, and apoptosis in B-CPAP and TPC-1 cells. The putative target of miR-152 was predicted using the bioinformatic analysis, and the targeting relationship was confirmed verified subsequently. Afterward, exosomes were isolated from bone marrow mesenchymal stem cells (BM-MSCs) and co-cultured with B-CPAP and TPC-1 cells to explore the function of exosomal miR-152 on THCA cells. Results miR-152 was reduced in THCA tissues and cells. Restoration of miR-152 inhibited proliferation, invasion and migration of B-CPAP and TPC-1 cells, but promoted cell apoptosis. Dipeptidyl dipeptidase 4 (DPP4), a target of miR-152, was found to promote THCA cell invasion and migration. miR-152 ferried by BM-MSCs-derived exosomes repressed THCA cell invasion and migration, and pcDNA-DPP4 weakened the repression effect. Conclusion Exosomal miR-152 inhibited proliferation, migration and invasion of THCA cells by binding with DPP4, which may represent a novel target for the treatment of THCA. Keywords Thyroid carcinoma · Exosome · microRNA-152 · DPP4 · Bone marrow mesenchymal stem cells
Introduction Thyroid carcinoma (THCA), the most frequent malignancy in the endocrine system, accounts for 3.8% of all new diagnoses related to cancer in the United States and ranks the * K. Wang [email protected] * F. Wang [email protected] 1
Department of Endocrinology and Metabolism, The First Affiliated Hospital of Chengdu Medical College, Chengdu 610500, Sichuan, China
Department of Rehabilitation, The First Affiliated Hospital of Chengdu Medical College, No. 278, Middle Section of Baoguang Avenue, Xindu District, Chengdu 610500, Sichuan, China
2
ninth most prevalent cancer overall [1]. The incidence of THCA has stabilized after the application of more conservative diagnostic practices following the sharp rise in the diagnosis of indolent tumors recently [2]. The discrepancy between the new diagnoses of THCA and mortality also reflects the relatively indolent nature and satisfactory long-term survival rate [3]. For differentiated THCA patients following the operation, metastasis is the most common re
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