Biological characteristics of bone mesenchymal stem cells from psoriatic patients / 中华皮肤科杂志

ABSTRACT

Objective To observe the growth and biological features of bone mesenchymal stem cells (BMSC) from psoriatic patients. Methods Peripheral blood mononuclear cells were isolated from 5 patients with active psoriasis vulgaris and 5 normal human controls, and BMSC were obtained and purified using plastic adherence method followed by primary culture and passage in vitro. The cell morphology, density and growth were observed with microscopy. Cell growth pattern was evaluated by MTT assay. Flow cytometry was applied to identify surface antigens, including CD29, CD34, CD45 and CD106, on these cells. Results No significant difference was observed in the morphology of primary or descendant BMSC between the patients and controls.The primary BMSC from psoriatic patients tended to adhere to the plastic wall later, confluence and grow more slowly compared with those from the controls. The BMSCs from both psoriatic patients anti healthy donors were positive for CD29, but negative for CD34 or CD45. On the 4th day of culture, the BMSC from psoriatic patients exhibited a decrease in proliferation, with the absorbence at 470 nm (A470) being 0.081±0.0066 and 0.095±0.0130, respectively for BMSC from the patients and controls (t=2.358, P<0.05). Conclusion There is a decrease in the proliferation of BMSC from psoriatic patients which show a morphological similarity to those from healthy controls.