J Korean Soc Plast Reconstr Surg.  2006 Jan;33(1):5-12.

A Study for the Mechanism of Abnormal Proliferation in Vascular Endothelial Cells using Inhibitors to the Signal Transduction Pathway

• Bae YC
• Park SY
• Nam SB
• Herh JY
• Kang YS

Abstract

Protein tyrosine kinase(PTK), protein kinase C(PKC), oxidase, as a mediator, take a significant role in signal transduction pathway of angiogenesis. The authors utilized the inhibitors, targeting the formation of three co-enzyme in signal transduction pathway in order to quantify the suppression of abnormal vascular endothelial cell proliferation induced by DMH, to compare the level suppression in each up-regulated growth factors, CTGF, CYR61, ITGbeta1, FHL2, and to identify the relationship between abnormal cell proliferation and signal transduction pathway. Five groups were established; Control group, Group of DMH, Group of DMH-mixed Herbimycin, inhibitor of protein tyrosine kinase, Group of DMH-mixed Calphostin C, inhibitor of protein kinase C, Group Of Dmh-Mixed 10U Catalase, Inhibitor Of oxidase. The rise of vascular endothelial cell was compared by MTT assay, and four growth factors were analysed with RT-PCR method, at pre-administration, 4, 8, 12, and 24 hours after administration. In comparison of abnormal proliferation of vascular endothelial cell induced by DMH, suppression was noticed in Herbimycin and Calphostin C group, and Calphostin C group revealed higher suppression effect. Nevertheless, Catalase group did not have any suppression. In manifestation of four growth factors, Herbimycin and Calphostin C group presented similar manifestation with control group, except in ITGbeta. Catalse group had similar manifestation with DMH group in all four growth factors. Abnormal proliferation of vascular endothelial cell induced by DMH have a direct relationship with PTK and PKC, more specifically to PKC. Oxidase was confirmed not to have any relevance.

Keyword

Proliferation; Angiogenic growth factor; Vascular endothelial cells

MeSH Terms

Catalase
Cell Proliferation
Dimenhydrinate
Endothelial Cells*
Intercellular Signaling Peptides and Proteins
Oxidoreductases
Protein Kinase C
Protein Kinases
Protein-Tyrosine Kinases
Signal Transduction*
Tyrosine
Catalase
Dimenhydrinate
Intercellular Signaling Peptides and Proteins
Oxidoreductases
Protein Kinase C
Protein Kinases
Protein-Tyrosine Kinases
Tyrosine