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2015 ; 7
(309
): 309ra165
Nephropedia Template TP
gab.com Text
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English Wikipedia
The peptidomimetic Vasotide targets two retinal VEGF receptors and reduces
pathological angiogenesis in murine and nonhuman primate models of retinal
disease
#MMPMID26468327
Sidman RL
; Li J
; Lawrence M
; Hu W
; Musso GF
; Giordano RJ
; Cardó-Vila M
; Pasqualini R
; Arap W
Sci Transl Med
2015[Oct]; 7
(309
): 309ra165
PMID26468327
show ga
Blood vessel growth from preexisting vessels (angiogenesis) underlies many severe
diseases including major blinding retinal diseases such as retinopathy of
prematurity (ROP) and aged macular degeneration (AMD). This observation has
driven development of antibody inhibitors that block a central factor in AMD,
vascular endothelial growth factor (VEGF), from binding to its receptors VEGFR-1
and mainly VEGFR-2. However, some patients are insensitive to current anti-VEGF
drugs or develop resistance, and the required repeated intravitreal injection of
these large molecules is costly and clinically problematic. We have evaluated a
small cyclic retro-inverted peptidomimetic, D(Cys-Leu-Pro-Arg-Cys) [D(CLPRC)],
and hereafter named Vasotide, that inhibits retinal angiogenesis by binding
selectively to the VEGF receptors VEGFR-1 and neuropilin-1 (NRP-1). Delivery of
Vasotide via either eye drops or intraperitoneal injection in a laser-induced
monkey model of human wet AMD, a mouse genetic knockout model of the AMD subtype
called retinal angiomatous proliferation (RAP), and a mouse oxygen-induced model
of ROP decreased retinal angiogenesis in all three animal models. This prototype
drug candidate is a promising new dual receptor inhibitor of the VEGF ligand with
potential for translation into safer, less-invasive applications to combat
pathological angiogenesis in retinal disorders.