PROTEIN-KINASE-C INHIBITOR CALPHOSTIN-C PREVENTS CYTOKINE-INDUCED ANGIOGENESIS IN THE RAT

被引:28
作者
HU, DE [1 ]
FAN, TPD [1 ]
机构
[1] UNIV CAMBRIDGE,DEPT PHARMACOL,CAMBRIDGE CB2 1QJ,ENGLAND
基金
英国惠康基金;
关键词
D O I
10.1007/BF01534379
中图分类号
Q2 [细胞生物学];
学科分类号
071009 ; 090102 ;
摘要
A rat sponge implant model was used to examine the role of protein kinase C (PKC) in angiogenesis. Neovascular response was determined by measurements of relative sponge blood flow by a Xe-133 clearance technique and confirmed histologically. Morphometric analysis was used to quantitate the amount of fibrovascular growth in the sponges. Daily doses of recombinant human basic fibroblast growth factor (bFGF, 100 ng), tumor necrosis factor-alpha (TNF-alpha, 50 ng), or interleukin-1-alpha (IL-1 alpha, 50 ng) caused neovascular responses that were blocked by daily coadministration of the selective PKC inhibitor, calphostin C (4 mu g). To confirm that calphostin C was able to inhibit PKC in vivo, its effect on the angiogenic response elicited by the PKC activator, phorbol 12-myristate 13-acetate (PMA, 30 mu g) was examined. The blood flow and morphometric data clearly showed that the intense neovascularization induced by PMA was totally suppressed by coadministration of calphostin C (4 mu g). Thus, these results suggest that cytokine-induced angiogenesis may be mediated in part through the activation of PKC and that selective inhibition of this enzyme could have therapeutic benefit in angiogenic diseases.
引用
收藏
页码:39 / 54
页数:16
相关论文
共 32 条
[1]  
ANDRADE SP, 1987, BRIT J EXP PATHOL, V68, P755
[2]  
BIRD TA, 1990, J BIOL CHEM, V265, P235
[3]   INVOLVEMENT OF PROTEIN KINASE-C IN THE MITOGENIC AND CHEMOTAXIS EFFECTS OF BASIC FIBROBLAST GROWTH-FACTOR ON BOVINE CEREBRAL-CORTEX CAPILLARY ENDOTHELIAL-CELLS [J].
DAVIET, I ;
HERBERT, JM ;
MAFFRAND, JP .
FEBS LETTERS, 1990, 259 (02) :315-317
[4]  
DINARELLO CA, 1991, BLOOD, V77, P1627
[5]   PROTEIN-KINASE-C ACTIVATORS SUPPRESS STIMULATION OF CAPILLARY ENDOTHELIAL-CELL GROWTH BY ANGIOGENIC ENDOTHELIAL MITOGENS [J].
DOCTROW, SR ;
FOLKMAN, J .
JOURNAL OF CELL BIOLOGY, 1987, 104 (03) :679-687
[6]  
FAJARDO LF, 1992, AM J PATHOL, V140, P539
[7]  
FAN TPD, 1994, TRENDS PHARMACOL SCI, V15, P33
[8]   STIMULATION OF ANGIOGENESIS BY SUBSTANCE-P AND INTERLEUKIN-1 IN THE RAT AND ITS INHIBITION BY NK1 OR INTERLEUKIN-1 RECEPTOR ANTAGONISTS [J].
FAN, TPD ;
HU, DE ;
GUARD, S ;
GRESHAM, GA ;
WATLING, KJ .
BRITISH JOURNAL OF PHARMACOLOGY, 1993, 110 (01) :43-49
[9]  
FAN TPD, 1992, CANCER BIOL SERIES, V3, P185
[10]   ANGIOGENIC FACTORS [J].
FOLKMAN, J ;
KLAGSBRUN, M .
SCIENCE, 1987, 235 (4787) :442-447