LncRNA MALAT1 mediates doxorubicin resistance of hepatocellular carcinoma by regulating miR-3129-5p/Nova1 axis
| Autor: | Fenghai Liu, Huazheng Pan, Yongxian Cao, Haotian Wang, Chunhua Bi, Jinpeng Cui, Feng Zhang |
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| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Carcinoma Hepatocellular Clinical Biochemistry Mice Nude Apoptosis Drug resistance Biology Flow cytometry Mice 03 medical and health sciences 0302 clinical medicine Downregulation and upregulation Cell Movement Cell Line Tumor Neuro-Oncological Ventral Antigen medicine Animals Humans Neoplasm Invasiveness Molecular Biology Cell Proliferation Gene knockdown MALAT1 medicine.diagnostic_test Cell growth Liver Neoplasms RNA-Binding Proteins Cancer Cell Biology General Medicine medicine.disease digestive system diseases Gene Expression Regulation Neoplastic MicroRNAs 030104 developmental biology Doxorubicin Drug Resistance Neoplasm 030220 oncology & carcinogenesis Cancer research RNA Long Noncoding Neoplasm Transplantation Signal Transduction |
| Zdroj: | Molecular and Cellular Biochemistry. 476:279-292 |
| ISSN: | 1573-4919 0300-8177 |
| DOI: | 10.1007/s11010-020-03904-6 |
| Popis: | Drug resistance is one of the major challenges for cancer therapies. In recent years, research on disease-related molecular signaling pathways has become the key ways to understand and overcome obstacles. Dysregulation of MALAT1 could regulate doxorubicin resistance of hepatocellular carcinoma (HCC), but how MALAT1 involving in managing doxorubicin resistance remains unclear yet. We aimed to elucidate the specific molecular mechanism of MALAT1 with doxorubicin resistance in HCC cells. Quantitative real-time polymerase chain reaction (qRT-PCR) was engaged to detect the expression levels of MALAT1, miR-3129-5p and Nova1 mRNA; MTT, western blot, flow cytometry and luciferase reporter assays were executed to identify the influence of MALAT1 on doxorubicin resistance of HCC cells. Xenograft tumor model was created to confirm the biological function of MALAT1 in doxorubicin resistance of HCC cells in vivo. MALAT1 and Nova1 were upregulated, while miR-3129-5p expression was decreased in doxorubicin-resistant HCC tissues and cells. Knockdown of MALAT1 regulated doxorubicin resistance of HCC cells through inhibiting cell proliferation, migration, invasion and promoting apoptosis, but antisense miR-3129-5p released the functional effect of MALAT1 knockdown. Nova1, as a target gene of miR-3129-5p, reversed the results of miR-3129-5p expression and enhanced doxorubicin resistance of HCC cells. Xenograft tumor model suggested that dysregulation of MALAT1 regulated tumor growth and Nova1 to mediate doxorubicin resistance of HCC cells by as a sponge for miR-3129-5p in vivo. Elevation of LncRNA MALAT1 mediated doxorubicin resistance and the progression of HCC via a MALAT1/miR-3129-5p/Nova1 axis. This study would be expected to enrich the understanding of doxorubicin resistance of HCC and provide new ideas for HCC treatment strategies. |
| Databáze: | OpenAIRE |
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