MicroRNA-34a Alleviates Gemcitabine Resistance in Pancreatic Cancer by Repression of Cancer Stem Cell Renewal. 2021

Yue Pan, and Kun Li, and Xufeng Tao, and Yongxin Zhao, and Qing Chen, and Ning Li, and Jianzhou Liu, and Vay Liang W Go, and Junchao Guo, and Ge Gao, and Gary Guishan Xiao
From the State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, Dalian.

This study aimed to enhance the sensitivity of pancreatic ductal adenocarcinoma cells by microRNA-34a (miR-34a)-mediated targeting of Notch 1. Cell viability was determined by using an MTT (3-(4,5)-dimethylthiahiazo(-2)-3,5-diphenytetrazoliumromide) assay. The expression levels of miR-34a and relevant mRNAs were determined using quantitative polymerase chain reaction. Protein levels were measured by Western blotting. Cellular stemness was assessed by cell invasiveness and sphere formation assays. A transplanted tumor model was established for in vivo experiments. MicroRNA-34a enhanced gemcitabine sensitivity both in vivo and in vitro. MicroRNA-34a suppressed the stemness and proliferation of pancreatic cancer stem cells. MicroRNA-34a directly associated with Notch 1, which lies upstream of epithelial-mesenchymal transition signaling pathways. MicroRNA-34a sensitized pancreatic cancer cells to gemcitabine treatment by inhibiting Notch 1 signaling in pancreatic cancer stem cells, indicating that miR-34a has the potential to be developed as a novel therapeutic agent for the treatment of gemcitabine-resistant pancreatic ductal adenocarcinoma cells.

UI MeSH Term Description Entries
D008819 Mice, Nude Mutant mice homozygous for the recessive gene "nude" which fail to develop a thymus. They are useful in tumor studies and studies on immune responses. Athymic Mice,Mice, Athymic,Nude Mice,Mouse, Athymic,Mouse, Nude,Athymic Mouse,Nude Mouse
D010190 Pancreatic Neoplasms Tumors or cancer of the PANCREAS. Depending on the types of ISLET CELLS present in the tumors, various hormones can be secreted: GLUCAGON from PANCREATIC ALPHA CELLS; INSULIN from PANCREATIC BETA CELLS; and SOMATOSTATIN from the SOMATOSTATIN-SECRETING CELLS. Most are malignant except the insulin-producing tumors (INSULINOMA). Cancer of Pancreas,Pancreatic Cancer,Cancer of the Pancreas,Neoplasms, Pancreatic,Pancreas Cancer,Pancreas Neoplasms,Pancreatic Acinar Carcinoma,Pancreatic Carcinoma,Acinar Carcinoma, Pancreatic,Acinar Carcinomas, Pancreatic,Cancer, Pancreas,Cancer, Pancreatic,Cancers, Pancreas,Cancers, Pancreatic,Carcinoma, Pancreatic,Carcinoma, Pancreatic Acinar,Carcinomas, Pancreatic,Carcinomas, Pancreatic Acinar,Neoplasm, Pancreas,Neoplasm, Pancreatic,Neoplasms, Pancreas,Pancreas Cancers,Pancreas Neoplasm,Pancreatic Acinar Carcinomas,Pancreatic Cancers,Pancreatic Carcinomas,Pancreatic Neoplasm
D002465 Cell Movement The movement of cells from one location to another. Distinguish from CYTOKINESIS which is the process of dividing the CYTOPLASM of a cell. Cell Migration,Locomotion, Cell,Migration, Cell,Motility, Cell,Movement, Cell,Cell Locomotion,Cell Motility,Cell Movements,Movements, Cell
D002470 Cell Survival The span of viability of a cell characterized by the capacity to perform certain functions such as metabolism, growth, reproduction, some form of responsiveness, and adaptability. Cell Viability,Cell Viabilities,Survival, Cell,Viabilities, Cell,Viability, Cell
D003841 Deoxycytidine A nucleoside component of DNA composed of CYTOSINE and DEOXYRIBOSE. Cytosine Deoxyribonucleoside,Cytosine Deoxyriboside,Deoxyribonucleoside, Cytosine,Deoxyriboside, Cytosine
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000066673 Cell Self Renewal The ability of certain cell types, such as progenitor cells or tumor cells, to go through numerous cycles of CELL DIVISION while still maintaining an undifferentiated or partially differentiated state. Stem Cell Renewal,Stem Cell Self-Renewal,Cell Renewal, Stem,Cell Renewals, Stem,Cell Self Renewals,Cell Self-Renewal, Stem,Cell Self-Renewals, Stem,Renewal, Cell Self,Renewal, Stem Cell,Renewals, Cell Self,Renewals, Stem Cell,Self Renewal, Cell,Self Renewals, Cell,Self-Renewal, Stem Cell,Self-Renewals, Stem Cell,Stem Cell Renewals,Stem Cell Self Renewal,Stem Cell Self-Renewals
D000093542 Gemcitabine A deoxycytidine antimetabolite used as an antineoplastic agent. 2',2'-Difluoro-2'-Deoxycytidine,2',2'-Difluorodeoxycytidine,2'-Deoxy-2',2''-Difluorocytidine-5'-O-Monophosphate,2'-Deoxy-2'-Difluorocytidine,Gemcitabine Hydrochloride,Gemcitabine, (D-threo-pentafuranosyl)-Isomer,Gemcitabine, (alpha-D-threo-pentofuranosyl)-Isomer,Gemcitabine, (beta-D-threo-pentafuranosyl)-Isomer,Gemicitabine,2',2'-DFDC,Gemzar,LY 188011,LY-188011,dFdCyd,188011, LY,2' Deoxy 2' Difluorocytidine,2' Deoxy 2',2'' Difluorocytidine 5' O Monophosphate,Hydrochloride, Gemcitabine
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D000964 Antimetabolites, Antineoplastic Antimetabolites that are useful in cancer chemotherapy. Antineoplastic Antimetabolites

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