Antitumour effects on human colorectal carcinomas cells by stable silencing of phospholipase C-gamma 1 with lentivirus-delivered siRNA / 中华医学杂志(英文版)
Chinese Medical Journal
; (24): 749-754, 2007.
Article
in En
| WPRIM
| ID: wpr-344814
Responsible library:
WPRO
ABSTRACT
<p><b>BACKGROUND</b>In most colorectal carcinomas, the level of phospholipase C (PLC)-gamma 1 expression is greatly elevated. Increased expression of PLC-gamma 1 may play an important role in colon carcinogenesis, but the mechanism is not well known. The aim of this study was to evaluate the role of PLC-gamma 1 in colon carcinogenesis by using recombinant lentivirus that stably suppressed the PLC-gamma 1 expression in human colorectal carcinoma LoVo cells.</p><p><b>METHODS</b>Recombinant lentivirus producing PLC-gamma 1 siRNA were prepared. After LoVo cells were transduced by each lentivirus, stably transduced cells were selected by Blasticidin. The protein and mRNA expression of PLC-gamma 1 were examined by Western-blot and reverse transcription-polymerase chain reaction (RT-PCR) analysis, and the effects of the lentivirus on the cell adhesion, migration and apoptosis were analyzed.</p><p><b>RESULTS</b>Stable LoVo cell line deficient in PLC-gamma 1, was established. Notably, PLC-gamma 1 was silenced without affecting the levels of other subtypes of PLC so that the role of PLC-gamma 1 in colon carcinogenesis could be examined. Silencing of endogenous PLC-gamma 1 resulted in efficient inhibition of the adhesion and migration of LoVo cells in vitro and a great increase of 5-fluorouracil induced apoptosis (30%-40%) of LoVo cells.</p><p><b>CONCLUSIONS</b>PLC-gamma 1 may play an important role in metastasis and anti-apoptosis in human colorectal carcinomas.</p>
Full text:
1
Index:
WPRIM
Main subject:
Pathology
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Pharmacology
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Physiology
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Therapeutics
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Colorectal Neoplasms
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Cell Adhesion
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Laminin
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Apoptosis
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Lentivirus
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RNA, Small Interfering
Limits:
Humans
Language:
En
Journal:
Chinese Medical Journal
Year:
2007
Type:
Article