Effect of human granulysin on apoptosis, mitochondrial transmembrane potential and cytochrome C release of SMMC-7721 cells.
- Author:
Zheng-Jun YI
1
;
Yu-Rong FU
;
Jun-Ming LI
Author Information
- Publication Type:Journal Article
- MeSH: Antigens, Differentiation, T-Lymphocyte; pharmacology; Apoptosis; drug effects; Cell Line, Tumor; Cytochromes c; metabolism; Humans; Membrane Potential, Mitochondrial; drug effects; Mitochondria; drug effects; metabolism; physiology
- From: Chinese Journal of Hepatology 2008;16(8):604-607
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo construct a plasmid carrying granulysin (GLS) and to study the effect of the GLS on apoptosis, mitochondrial transmembrane potential and cytochrome C release of SMMC-7721 cells.
METHODSThe coding sequence of the GLS was amplified from the total RNA of human CTL cells, and it was inserted into pBudCE4.1 plasmid and then it was used to transfect SMMC-7721 cells. The expression of GLS was detected by RT-PCR and confirmed by immunocytochemistry method. Cell apoptosis was ascertained by Hoechst staining and electron microscopy; mitochondrial transmembrane potential was detected using Mitocapture and cytochrome C release was studied using Western blot.
RESULTSRecombinant pBudCE4.1/GLS plasmid was successfully constructed. GLS protein was successfully expressed in the SMMC-7721 cells and it induced apoptosis of the SMMC-7721 cells, and at the same time, mitochondrial transmembrane potential was reduced and cytochrome C was released from mitochondria into the cytosol.
CONCLUSIONSGLS gene carried by recombinant plasmid could express in SMMC-7721 cells and induce cells apoptosis. The change of mitochondrial transmembrane potential and the release of cytochrome C might be one of the key factors of apoptosis induced by GLS.
