Rate of basement membrane biosynthesis as an index to angiogenesis

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A method was developed for assessing collagenous protein biosynthesis from [U-14C] proline in relation to angiogenesis in the chick chorioallantoic membrane (CAM). The rate of collagenous protein biosynthesis both in vitro and in vivo was maximum between days 8 and 11 of chick embryo development. This was the stage of maximum angiogenesis as shown by morphological evaluation of the vascular density. At day 10 the rate of collagenous protein biosynthesis was 11-fold higher than that of day 15, when angiogenesis had reached a plateau. The collagenous protein formed by CAM co-elutes on SDS-agarose chromatography with the collagenous component of [3H]-acetylated-basement membrane (BM) from bovine lens capsule. 8,9-dihydroxy-7-methyl-benzo[b]quinolizinium bromide (GPA1734), which was shown previously to be a specific inhibitor of BM collagen biosynthesis, caused about 80% reduction in collagenous protein synthesis by CAM. These results indicate that most of the collagenous protein synthesized by CAM was BM collagen and this can be used as a biochemical index of angiogenesis. © 1988.




Maragoudakis, M. E., Panoutsacopoulou, M., & Sarmonika, M. (1988). Rate of basement membrane biosynthesis as an index to angiogenesis. Tissue and Cell, 20(4), 531–539. https://doi.org/10.1016/0040-8166(88)90055-9

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