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2015 ; 6
(12
): 10563-76
Nephropedia Template TP
gab.com Text
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English Wikipedia
Powerful anti-tumor and anti-angiogenic activity of a new anti-vascular
endothelial growth factor receptor 1 peptide in colorectal cancer models
#MMPMID25868854
Cicatiello V
; Apicella I
; Tudisco L
; Tarallo V
; Formisano L
; Sandomenico A
; Kim Y
; Bastos-Carvalho A
; Orlandi A
; Ambati J
; Ruvo M
; Bianco R
; De Falco S
Oncotarget
2015[Apr]; 6
(12
): 10563-76
PMID25868854
show ga
To assess the therapeutic outcome of selective block of VEGFR1, we have evaluated
the activity of a new specific antagonist of VEGFR1, named iVR1 (inhibitor of
VEGFR1), in syngenic and xenograft colorectal cancer models, in an artificial
model of metastatization, and in laser-induced choroid neovascularization. iVR1
inhibited tumor growth and neoangiogenesis in both models of colorectal cancer,
with an extent similar to that of bevacizumab, a monoclonal antibody anti-VEGF-A.
It potently inhibited VEGFR1 phosphorylation in vivo, determining a strong
inhibition of the recruitment of monocyte-macrophages and of mural cells as
confirmed, in vitro, by the ability to inhibit macrophages migration. iVR1 was
able to synergize with irinotecan determining a shrinkage of tumors that became
undetectable after three weeks of combined treatment. Such treatment induced a
significant prolongation of survival similar to that observed with bevacizumab
and irinotecan combination. iVR1 also fully prevented lung invasion by HCT-116
cells injected in mouse tail vein. Also, iVR1 impressively inhibited choroid
neovascularization after a single intravitreal injection. Collectively, data
showed the strong potential of iVR1 peptide as a new anti-tumor and
anti-metastatic agent and demonstrate the high flexibility of VEGFR1 antagonists
as therapeutic anti-angiogenic agents in different pathological contexts.