國家衛生研究院 NHRI:Item 3990099045/3011

NHRI > National Institute of Cancer Research > Jacqueline Whang-Peng(1996-2007) > Periodical Articles > Item 3990099045/3011

Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/3011

Title:	Shortening of microsatellite deoxy(CA) repeats involved in GL331-induced down-regulation of matrix metalloproteinase-9 gene expression
Authors:	Huang, TS;Lee, CC;Chang, AC;Lin, S;Chao, CC;Jou, YS;Chu, YW;Wu, CW;Whang-Peng, J
Contributors:	National Institute of Cancer Research;Division of Molecular and Genomic Medicine
Abstract:	Matrix metalloprotemase-9 (MMP-9) associates with cancer cell invasion and metastasis. CL1-5 cells, a human lung adenocarcinoma cell line, expressed an elevated level of MMP-9 and exhibited a highly invasive and metastatic ability. By Matrigel assay and gelatinase zymography, the topoisomerase 11 poison GL331 was found to dose-dependently inhibit the invasiveness and the level of secreted MMP-9 of CL1-5 cells. Northern blot analysis indicated that cellular MMP-9 rnRNA level was decreased after GL331 treatment. Furthermore, GL331-induced down-regulation of mmp-9 gene promoter was demonstrated by using a luciferase reporter gene driven by the -216 to -13 region of the mmp-9 gene promoter cloned from CL1-5 cells. By PCR amplification and gel electrophoresis, we found that GL331 caused shortening of the -216 to -13 region of the mmp-9 promoter. Direct sequencing analysis revealed that the number of d(CA) was reduced from 24 to 18 at the microsatellite d(CA) repeat region of the mmp-9 promoter. The CL1-5 cells transfected with the luciferase reporter containing 18 d(CA)s expressed only 53% of those when the reporter contained 24 d(CA)s. The promoter region of mmp-9 gene contains other positive regulatory elements, such as TRE and kappaB. We found that GL331 did not significantly influence the luciferase activity driven by TRE or kappaB. Taken together, these data suggested that GL331 inhibited MMP-9 mRNA expression at least partly through the selective induction of shortening of microsatellite d(CA) repeats. This is the first report that an anti-cancer agent can inhibit mmp-9 gene expression by inducing microsatellite DNA shortening.
Keywords:	Biochemistry & Molecular Biology;Biophysics
Date:	2003-01-24
Relation:	Biochemical and Biophysical Research Communications. 2003 Jan;300(4):901-907.
Link to:	http://dx.doi.org/10.1016/S0006-291X(02)02962-5
JIF/Ranking 2023:	http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=0006-291X&DestApp=IC2JCR
Cited Times(WOS):	https://www.webofscience.com/wos/woscc/full-record/WOS:000180693000015
Cited Times(Scopus):	http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0037462979
Appears in Collections:	[Jacqueline Whang-Peng(1996-2007)] Periodical Articles [Yuh-Shan Jou(1996-2005)] Periodical Articles [Cheng-Wen Wu(1996-2008)] Periodical Articles [Tze-Sing Huang] Periodical Articles

Files in This Item:

File	Description	Size	Format
000180693000015.pdf		323Kb	Adobe PDF	1160	View/Open

Loading...