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>
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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