TY - JOUR
T1 - LL-37 regulates the overexpression of vascular endothelial growth factor (VEGF) and c-IAP-2 in human keratinocytes
AU - Rodríguez-Martínez, Sandra
AU - Cancino-Diaz, Juan Carlos
AU - Vargas-Zuñiga, Luis Martin
AU - Cancino-Diaz, Mario Eugenio
PY - 2008/5
Y1 - 2008/5
N2 - Background: The antimicrobial peptide PR39 is a porcine cathelicidin with angiogenic and antiapoptotic activities, as it can regulate the expression of vascular endothelial growth factor (VEGF) and inhibitor apoptosis protein-2 (c-IAP-2) in endothelial cells. The human homolog LL-37 has been found to be highly expressed in human keratinocytes from psoriatic patients, but it is not known whether LL-37 can modulate the expression of VEGF and c-IAP-2 in keratinocytes, as both molecules are involved in the overgrowth of psoriatic skin. Therefore, in this work, we studied the possible role of CAP18/LL-37 in the modulation of VEGF and c-IAP-2 expression in human keratinocytes. Methods: The CAP18/LL-37 gene was cloned into a plasmid that contained green fluorescent protein (GFP). This plasmid was called pGFP-CAP18/ LL-37. The expression of LL-37, VEGF, and c-IAP-2 was determined by reverse transcriptase-polymerase chain reaction (RT-PCR) and Western blotting in HaCaT cells transfected with pGFP-CAP18/LL-37. Specific DNAzymes were used to break the CAP18/LL-37 mRNA (DNAz-CAP18/LL-37). Results: HaCaT cells transfected with pGFP-CAP18/LL-37 showed the upregulation of VEGF and c-IAP-2 mRNAs. Hypoxia-inducible factor-1α (HIF-1α) mRNA expression did not change during the assays; however, its protein was increased, as well as the VEGF protein. HaCaT cells cotransfected with pGFP-CAP18/LL-37 and DNAz-CAP18/LL-37 showed depleted expression of LL-37, VEGF, and c-IAP-2 mRNAs. Conclusions: These results suggest that LL-37 may modulate the expression of VEGF and c-IAP-2 via HIF-1α in human keratinocytes.
AB - Background: The antimicrobial peptide PR39 is a porcine cathelicidin with angiogenic and antiapoptotic activities, as it can regulate the expression of vascular endothelial growth factor (VEGF) and inhibitor apoptosis protein-2 (c-IAP-2) in endothelial cells. The human homolog LL-37 has been found to be highly expressed in human keratinocytes from psoriatic patients, but it is not known whether LL-37 can modulate the expression of VEGF and c-IAP-2 in keratinocytes, as both molecules are involved in the overgrowth of psoriatic skin. Therefore, in this work, we studied the possible role of CAP18/LL-37 in the modulation of VEGF and c-IAP-2 expression in human keratinocytes. Methods: The CAP18/LL-37 gene was cloned into a plasmid that contained green fluorescent protein (GFP). This plasmid was called pGFP-CAP18/ LL-37. The expression of LL-37, VEGF, and c-IAP-2 was determined by reverse transcriptase-polymerase chain reaction (RT-PCR) and Western blotting in HaCaT cells transfected with pGFP-CAP18/LL-37. Specific DNAzymes were used to break the CAP18/LL-37 mRNA (DNAz-CAP18/LL-37). Results: HaCaT cells transfected with pGFP-CAP18/LL-37 showed the upregulation of VEGF and c-IAP-2 mRNAs. Hypoxia-inducible factor-1α (HIF-1α) mRNA expression did not change during the assays; however, its protein was increased, as well as the VEGF protein. HaCaT cells cotransfected with pGFP-CAP18/LL-37 and DNAz-CAP18/LL-37 showed depleted expression of LL-37, VEGF, and c-IAP-2 mRNAs. Conclusions: These results suggest that LL-37 may modulate the expression of VEGF and c-IAP-2 via HIF-1α in human keratinocytes.
UR - http://www.scopus.com/inward/record.url?scp=42449090687&partnerID=8YFLogxK
U2 - 10.1111/j.1365-4632.2008.03340.x
DO - 10.1111/j.1365-4632.2008.03340.x
M3 - Artículo
C2 - 18412861
SN - 0011-9059
VL - 47
SP - 457
EP - 462
JO - International Journal of Dermatology
JF - International Journal of Dermatology
IS - 5
ER -