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Upregulated microRNA-193a-3p is responsible for cisplatin resistance in CD44(+) gastric cancer cells

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dc.contributor.author이용찬-
dc.date.accessioned2019-12-18T01:09:54Z-
dc.date.available2019-12-18T01:09:54Z-
dc.date.issued2019-
dc.identifier.issn1347-9032-
dc.identifier.urihttps://ir.ymlib.yonsei.ac.kr/handle/22282913/173397-
dc.description.abstractCisplatin is a well-known anticancer drug used to treat various cancers. However, development of cisplatin resistance has hindered the efficiency of this drug in cancer treatment. Development of chemoresistance is known to involve many signaling pathways. Recent attention has focused on microRNAs (miRNAs) as potentially important upstream regulators in the development of chemoresistance. CD44 is one of the gastric cancer stem cell markers and plays a role in regulating self-renewal, tumor initiation, metastasis and chemoresistance. The purpose of the present study was to examine the mechanism of miRNA-mediated chemoresistance to cisplatin in CD44-positive gastric cancer stem cells. We sorted gastric cancer cells according to level of CD44 expression by FACS and analyzed their miRNA expression profiles by microarray analysis. We found that miR-193a-3p was significantly upregulated in CD44(+) cells compared with CD44(-) cells. Moreover, SRSF2 of miR-193a-3p target gene was downregulated in CD44(+) cells. We studied the modulation of Bcl-X and caspase 9 mRNA splicing by SRSF2 and found that more pro-apoptotic variants of these genes were generated. We also found that downstream anti-apoptotic genes such as Bcl-2 were upregulated, whereas pro-apoptotic genes such as Bax and cytochrome C were downregulated in CD44(+) cells compared to CD44(-) cells. In addition, we found that an elevated level of miR-193a-3p triggered the development of cisplatin resistance in CD44(+) cells. Inhibition of miR-193a-3p in CD44(+) cells increased SRSF2 expression and also altered the levels of multiple apoptotic genes. Furthermore, inhibition of miR-193a-3p reduced cell viability and increased the number of apoptotic cells. Therefore, miR-193a-3p may be implicated in the development of cisplatin resistance through regulation of the mitochondrial apoptosis pathway. miR-193a-3p could be a promising target for cancer therapy in cisplatin-resistant gastric cancer.-
dc.description.statementOfResponsibilityopen-
dc.languageEnglish-
dc.publisherWiley Publishing on behalf of the Japanese Cancer Association-
dc.relation.isPartOfCANCER SCIENCE-
dc.rightsCC BY-NC-ND 2.0 KR-
dc.subject.MESHApoptosis/genetics-
dc.subject.MESHCell Line, Tumor-
dc.subject.MESHCell Movement/genetics-
dc.subject.MESHCell Proliferation/genetics-
dc.subject.MESHCisplatin/pharmacology*-
dc.subject.MESHDown-Regulation/genetics-
dc.subject.MESHGene Expression Regulation, Neoplastic/genetics-
dc.subject.MESHHumans-
dc.subject.MESHHyaluronan Receptors/genetics*-
dc.subject.MESHMicroRNAs/genetics*-
dc.subject.MESHProto-Oncogene Proteins c-bcl-2/genetics-
dc.subject.MESHSerine-Arginine Splicing Factors/genetics-
dc.subject.MESHSignal Transduction/genetics-
dc.subject.MESHStomach Neoplasms/drug therapy*-
dc.subject.MESHStomach Neoplasms/genetics*-
dc.subject.MESHUp-Regulation/drug effects-
dc.subject.MESHUp-Regulation/genetics*-
dc.titleUpregulated microRNA-193a-3p is responsible for cisplatin resistance in CD44(+) gastric cancer cells-
dc.typeArticle-
dc.contributor.collegeCollege of Medicine (의과대학)-
dc.contributor.departmentDept. of Internal Medicine (내과학교실)-
dc.contributor.googleauthorSo D. Lee-
dc.contributor.googleauthorDayeon Yu-
dc.contributor.googleauthorDo Y. Lee-
dc.contributor.googleauthorHyun‐Soo Shin-
dc.contributor.googleauthorJeong‐Hyeon Jo-
dc.contributor.googleauthorYong C. Lee-
dc.identifier.doi10.1111/cas.13894-
dc.contributor.localIdA02988-
dc.relation.journalcodeJ00454-
dc.identifier.eissn1349-7006-
dc.identifier.pmid30485589-
dc.subject.keywordCD44(+) cell-
dc.subject.keywordapoptosis-
dc.subject.keywordcancer-
dc.subject.keywordcisplatin-
dc.subject.keywordmiR-193a-3p-
dc.contributor.alternativeNameLee, Yong Chan-
dc.contributor.affiliatedAuthor이용찬-
dc.citation.volume110-
dc.citation.number2-
dc.citation.startPage662-
dc.citation.endPage673-
dc.identifier.bibliographicCitationCANCER SCIENCE, Vol.110(2) : 662-673, 2019-
dc.identifier.rimsid64319-
dc.type.rimsART-
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers

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