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Journal of Southern Medical University ; (12): 2253-2256, 2008.
Artigo em Chinês | WPRIM | ID: wpr-321713

RESUMO

<p><b>OBJECTIVE</b>To study the effect of progesterone on interleukin-6 (IL-6) release from human umbilic vein endothelial cells (HUVECs) induced by high mobility group box-1 protein (HMGB1).</p><p><b>METHOD</b>The recombinant expression plasmid pET14b-HMGB1 was constructed and transformed into competent E.coli BL21 cells to obtain HMGB1 protein, which was purified with chromatography on Ni-NTA Sepharose column. Cultured HUVECs were treated with purified HMGB1 protein alone at the concentrations 0, 10, 100, 500, and 1000 ng/ml, progesterone alone at the concentrations of 0, 0.1, 1, 10, 100 mmol/L, or with both HMGB1 protein (500 ng/ml) and progesterone at the terminal concentrations of 0, 0.1, 1, 10, and 100 mmol/L. Twenty-four hours later, the supernatant of the cell culture medium was collected to detect the levels of IL-6 using enzyme-linked immunosorbent assay (ELISA).</p><p><b>RESULTS</b>The IL-6 levels in HUVEC culture medium was slightly decreased after treatment with low-concentration HMGB1 but increased obviously following treatment with high-concentration HMGB1, and these effects could be dose-dependently inhibited by progesterone. Progesterone alone did not result in any noticeable changes of IL-6 levels in the cell culture medium.</p><p><b>CONCLUSIONS</b>Progesterone can dose-dependently inhibit HMGB1-induced IL-6 release from HUVECs, suggesting the protective role of progesterone in endotoxemia.</p>


Assuntos
Humanos , Células Cultivadas , Relação Dose-Resposta a Droga , Células Endoteliais , Biologia Celular , Metabolismo , Domínios HMG-Box , Proteína HMGB1 , Farmacologia , Interleucina-6 , Progesterona , Farmacologia , Veias Umbilicais , Biologia Celular , Metabolismo
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