| Texto completo | |
| Autor(es): |
Michaloski, Jussara S.
[1]
;
Redondo, Alexandre R.
[1]
;
Magalhaes, Leila S.
[1]
;
Cambui, Caio C.
[1]
;
Giordano, Ricardo J.
[1]
Número total de Autores: 5
|
| Afiliação do(s) autor(es): | [1] Univ Sao Paulo, Inst Quim, Dept Bioquim, POB 26077, BR-05513970 Sao Paulo - Brazil
Número total de Afiliações: 1
|
| Tipo de documento: | Artigo Científico |
| Fonte: | SCIENCE ADVANCES; v. 2, n. 10 OCT 2016. |
| Citações Web of Science: | 3 |
| Resumo | |
Receptor tyrosine kinases (RTKs) are key molecules in numerous cellular processes, the inhibitors of which play an important role in the clinic. Among them are the vascular endothelial growth factor (VEGF) family members and their receptors (VEGFR), which are essential in the formation of new blood vessels by angiogenesis. Anti-VEGF therapy has already shown promising results in oncology and ophthalmology, but one of the challenges in the field is the design of specific small-molecule inhibitors for these receptors. We show the identification and characterization of small 6-mer peptides that target the extracellular ligand-binding domain of all three VEGF receptors. These peptides specifically prevent the binding of VEGF family members to all three receptors and downstream signaling but do not affect other angiogenic RTKs and their ligands. One of the selected peptides was also very effective at preventing pathological angiogenesis in a mouse model of retinopathy, normalizing the vasculature to levels similar to those of a normal developing retina. Collectively, our results suggest that these peptides are pan-VEGF inhibitors directed at a common binding pocket shared by all three VEGFRs. These peptides and the druggable binding site they target might be important for the development of novel and selective small-molecule, extracellular ligand-binding inhibitors of RTKs (eTKIs) for angiogenic-dependent diseases. (AU) | |
| Processo FAPESP: | 09/54844-0 - Identificação de marcadores moleculares da retina angiogênica |
| Beneficiário: | Jussara Michaloski Souza |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |