Bcl2 enhances c-Myc-mediated MMP-2 expression of vascular smooth muscle cells. 2009

Qun Lu, and Wang Hong
Guangdong College of Pharmacy, Guangzhou, Guangdong, China.

Matrix metalloproteinases (MMPs) are a major group of enzymes that regulate cell matrix composition. In this paper, our results show that c-Myc significantly induced vascular smooth muscle cells (VSMCs) migration and invasion, compared with the results, the T58A had more effectively than WT c-Myc, which was associated with c-Myc increased MMP-2 gene expression and activity. Silenced c-Myc led to reduce MMP-2 gene expression and activity, as well as decrease VSMC migration and invasion, indicating c-Myc is required for MMP-2 mediated VSMC migration and invasion. However, S62A had no effect on VSMC migration and invasion, which was in line with S62A had no effect on the c-Myc transcriptional activity. To better understand whether Bcl2 cooperate with c-Myc on MMP-2 function, our data show that although Bcl2 had no effect on the MMP-2 activity, the coexpressing c-Myc and Bcl2 significantly increased MMP-2 gene expression and activity. Our results suggest that phosphorylation of Bcl2 (T70E and EEE) had more effectively on the MMP-2 activity, which resulted from T70E and EEE severely increased c-Myc transcriptional activity by directly binding to c-Myc. The findings show that phosphorylation of Bcl2 enhanced c-Myc-mediated MMP-2 activity.

UI MeSH Term Description Entries
D008297 Male Males
D009131 Muscle, Smooth, Vascular The nonstriated involuntary muscle tissue of blood vessels. Vascular Smooth Muscle,Muscle, Vascular Smooth,Muscles, Vascular Smooth,Smooth Muscle, Vascular,Smooth Muscles, Vascular,Vascular Smooth Muscles
D010766 Phosphorylation The introduction of a phosphoryl group into a compound through the formation of an ester bond between the compound and a phosphorus moiety. Phosphorylations
D002465 Cell Movement The movement of cells from one location to another. Distinguish from CYTOKINESIS which is the process of dividing the CYTOPLASM of a cell. Cell Migration,Locomotion, Cell,Migration, Cell,Motility, Cell,Movement, Cell,Cell Locomotion,Cell Motility,Cell Movements,Movements, Cell
D004789 Enzyme Activation Conversion of an inactive form of an enzyme to one possessing metabolic activity. It includes 1, activation by ions (activators); 2, activation by cofactors (coenzymes); and 3, conversion of an enzyme precursor (proenzyme or zymogen) to an active enzyme. Activation, Enzyme,Activations, Enzyme,Enzyme Activations
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D014158 Transcription, Genetic The biosynthesis of RNA carried out on a template of DNA. The biosynthesis of DNA from an RNA template is called REVERSE TRANSCRIPTION. Genetic Transcription
D016271 Proto-Oncogene Proteins c-myc Basic helix-loop-helix transcription factors encoded by the c-myc genes. They are normally involved in nucleic acid metabolism and in mediating the cellular response to growth factors. Elevated and deregulated (constitutive) expression of c-myc proteins can cause tumorigenesis. L-myc Proteins,N-myc Proteins,c-myc Proteins,myc Proto-Oncogene Proteins,p62(c-myc),Proto-Oncogene Products c-myc,Proto-Oncogene Proteins myc,myc Proto-Oncogene Product p62,p62 c-myc,L myc Proteins,N myc Proteins,Proteins myc, Proto-Oncogene,Proto Oncogene Products c myc,Proto Oncogene Proteins c myc,Proto Oncogene Proteins myc,Proto-Oncogene Proteins, myc,c myc Proteins,myc Proto Oncogene Product p62,myc Proto Oncogene Proteins,myc, Proto-Oncogene Proteins,p62 c myc
D017208 Rats, Wistar A strain of albino rat developed at the Wistar Institute that has spread widely at other institutions. This has markedly diluted the original strain. Wistar Rat,Rat, Wistar,Wistar Rats
D051381 Rats The common name for the genus Rattus. Rattus,Rats, Laboratory,Rats, Norway,Rattus norvegicus,Laboratory Rat,Laboratory Rats,Norway Rat,Norway Rats,Rat,Rat, Laboratory,Rat, Norway,norvegicus, Rattus

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