Piddybull. schreef op 27 januari 2022 15:05:
Bron / YAHOO - J
Patent Update Application filed today:
United States Patent Application 20220024975
Kind Code A1
Almeida; Aaron ; et al. January 27, 2022
ALPHA-V BETA-6 INTEGRIN LIGANDS AND USES THEREOF
Abstract
Integrin ligands having serum stability and affinity for .alpha.v.beta.6 integrins are described. Compositions comprising .alpha.v.beta.6 integrin ligands having serum stability and having affinity for .alpha.v.beta.6 integrins and methods of using them are also described.
BACKGROUND
[0003] Integrin alpha-v beta-6 (.alpha.v.beta.6), which is expressed in various epithelial cells, is a receptor for the latency-associated peptide (LAP) of TGF-.beta. and for the (ECM) proteins fibronectin, vitronectin, and tenascin.
[0004] Although barely detectable in normal healthy adult epithelia, .alpha.v.beta.6 integrin is upregulated during wound healing and in different cancers (e.g., colon, ovarian, endometrial, and gastric cancer), and often associates with poor cancer prognosis. It has been shown that .alpha.v.beta.6 integrin can promote cell invasion and migration in metastasis, and inhibit apoptosis. .alpha.v.beta.6 integrin may also regulate expression of matrix metalloproteases (MMPs) and activate TGF-.beta.1. There is increasing evidence, primarily from in vitro studies, that suggest that .alpha.v.beta.6 integrin may promote carcinoma progression. Thus, integrin .alpha.v.beta.6 is attractive as a tumor biomarker and potential therapeutic target and for its role in expression of matrix metalloproteases (MMPs) and activation of TGF-.beta.1.