Intracellular Delivery of Recombinant alpha B-crystallin into Neonatal Rat Cardiomyocytes has a Protective Effect on the Cells

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dc.contributor.authorJiang, Leide
dc.contributor.authorLiu, Shuangde
dc.contributor.authorWang, Kangkaide
dc.contributor.authorXiao, Weiminde
dc.contributor.authorXiao, Xianzhongde
dc.contributor.authorYuan, Cande
dc.date.accessioned2008-06-17T14:13:59Z
dc.date.available2008-06-17T14:13:59Z
dc.date.issued2007-04-10de
dc.description.abstractIn order to deliver alpha B-crystallin (alpha B-C) into cardiomyocytes and study its cellular protection, the full-length cDNA fragment encoding human alpha B-C was cloned into the bacterial expression vector pGEX-MTS containing the base sequence of membrane-translocating sequence (MTS) which mediates intracellular delivery of peptides and expressed as a fusion protein coupled to glutathione S-transferase (GST).After glutathione affinity chromatography and cleaved from GST by factor Xa, the recombinant MTS- alpha B-C was separated from GST and factor Xa by anion exchange chromatography. Recombinant MTS- alpha B-C was characterized by SDS-PAGE and Western immunoblot analysis. The purified MTS- alpha B-C migrated on SDS-PAGE as a single band to an apparent molecular weight (Mr.23kD) that corresponded to total native alpha B-C plus MTS, and was recognized on Western immunoblot by anti-human alpha B-crystallin antibody. MTS- alpha B-C displayed chaperone-like function in an ATP-containing buffer at 37? by disaggregating the denatured and aggregated actin induced by hydrogen peroxide (H2O2 )treatment. It was observed under fluorescence microscope that FITC-labeled MTS- alpha B-C had gone into neonatal rat cardiomyocytes by MTS mediation after the cells were incubated with it for 6 hours while FITC-labeled alpha B-C and bovine serum albumin had not gone into the cells. Recombinant MTS- alpha B-C is not cytotoxic, and MTS- alpha B-C-treated cells displayed increased H2O2-tolerance compared with non-treated cells.en
dc.identifier.issn1611-2156de
dc.identifier.urihttp://hdl.handle.net/2003/25681
dc.identifier.urihttp://dx.doi.org/10.17877/DE290R-12558
dc.language.isoende
dc.relation.ispartofseriesEXCLI Journal ; Vol. 6, 2007en
dc.subjectalpha B-crystallinen
dc.subjectCardiomyocytesen
dc.subjectCytoprotectionen
dc.subjectMembrane-translocating sequenceen
dc.subjectProtein engineeringen
dc.subject.ddc610
dc.titleIntracellular Delivery of Recombinant alpha B-crystallin into Neonatal Rat Cardiomyocytes has a Protective Effect on the Cellsen
dc.typeTextde
dc.type.publicationtypearticlede
dcterms.accessRightsopen access
eldorado.dnb.zdberstkatid2132560-1

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