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Effect of polypeptide extract from scorpion venom (PESV) on expression of HIF-1alpha and SDF-1/CXCR4 in repopulating H22 tumour tissue during chemotherapy treatment / 中国中药杂志
China Journal of Chinese Materia Medica ; (24): 1803-1807, 2011.
Article in Chinese | WPRIM | ID: wpr-354119
ABSTRACT
<p><b>OBJECTIVE</b>To study the expression of HIF-1alpha and SDF-1/CXCR4 in repopulating H22 tumor tissue and the mechanism of angiogenesis of polypeptide extract from scorpion venom (PESV) during chemotherapy treatment.</p><p><b>METHOD</b>The expression of HIF-1alpha and SDF-1/CXCR4 in H22 tumor tissue was monitored by immunohistochemistry, and the expression level was determined by Qwin V3 image analyzing software. The correlation between HIF-1alpha and SDF-1 was analyzed. SDF-1 content was detected by ELISA.</p><p><b>RESULT</b>HIF-1alpha expression was found no difference in model group between 14 d and 21 d, and up-regulated in 28 d. There was no change of HIF-1alpha expression was observed in low-dose PESV group. In high-dose PESV group, the level of HIF-1alpha expression was high in 14 d and low in 21 d. ELISA detecting showed SDF-1 content increased slowly from 14 d to 21 d, highly from 21 d to 28 d. But in high-dose PESV groups, the content increased slowly all the time. The immunohitochemistry method got the same result with ELISA. Correlation analysis showed r = 0.805. CXCR4 expression down-regulated in two PESV treated groups, and no difference was found between these two groups.</p><p><b>CONCLUSION</b>HIF-1alpha and SDF-1 participated in VEGF expression and angiogenesis in tumor tissue during chemotherapy, while PESV could inhibit the expression of HIF-1alpha and SDF-I.</p>
Subject(s)
Full text: Available Index: WPRIM (Western Pacific) Main subject: Peptides / Pharmacology / Scorpion Venoms / Scorpions / Time Factors / Down-Regulation / Chemistry / Receptors, CXCR4 / Cell Line, Tumor / Hypoxia-Inducible Factor 1, alpha Subunit Type of study: Prognostic study Limits: Animals Language: Chinese Journal: China Journal of Chinese Materia Medica Year: 2011 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Peptides / Pharmacology / Scorpion Venoms / Scorpions / Time Factors / Down-Regulation / Chemistry / Receptors, CXCR4 / Cell Line, Tumor / Hypoxia-Inducible Factor 1, alpha Subunit Type of study: Prognostic study Limits: Animals Language: Chinese Journal: China Journal of Chinese Materia Medica Year: 2011 Type: Article