Effects of recombinant Sagartia rosea cytolysin and Lapemis hardwickii phospholipase A2 on adventitial fibroblasts proliferation.

OBJECTIVE

To observe the effects of recombinant Sagartia rosea cytolysin (rSrc) and Lapemis hardwickii phospholipase A2(rPLA2) on adventitial fibroblasts proliferation.

METHODS

NIH-3T3 cells were cultured and treated with rSrc and rPLA2 at different concentrations for observation of cell proliferation using non-radioactive MTS/PES assay in comparison with the control group.

RESULTS

The ratio of cell proliferation was 0.840+/-0.061 in the control group, and was 0.263+/-0.044, 0.418+/-0.054, 0.605+/-0.063, 0.772+/-0.054 and 0.906+/-0.072 in rSrc groups corresponding to rSrc concentrations of 100, 10, 1 microg/ml and 100, 10 ng/ml respectively. rSrc was found to significantly inhibit fibroblast proliferation in a dose-dependent manner when the concentration used was above 1 microg/ml (P<0.05), as compared with the control group (P<0.05). The ratio of cell proliferation was 0.498+/-0.076, 0.937+/-0.112 and 0.978+/-0.145 in rPLA2 groups corresponding to rPLA2 concentrations of 100, 10, 1 microg/ml respectively, indicating that rPLA2 also significantly inhibited fibroblast proliferation at the concentration of 100 microg/ml (P<0.05).

CONCLUSION

rSrc and rPLA2 can both significantly inhibit adventitial fibroblast proliferation.