Abstract | BACKGROUND: AREAS COVERED: The index review describes the Tie2 pathway and its complementary role to the VEGF pathway in the angiogenesis cascade and will summarize studies of molecules in development to therapeutically modulate the Tie2 pathway in retinal vascular diseases. CONCLUSIONS: Activation of the Tie2 pathway leads to downstream signaling that promotes vascular health and stability and decreases vascular permeability and inflammation. AXT107 is a collagen IV-derived synthetic peptide with a dual mechanism of action that involves suppression of VEGF signaling and activation of the Tie2 pathway; these actions are accomplished by AXT107 binding to and disrupting different integrin, leading to blockade of the VEGF receptor and rearrangement of cellular Tie2 rendering it susceptible to Ang2 agonism. Other Tie2 agonist compounds are also in development, including faricimab and razuprotafib. Tie2 activation only modestly impacts angiogenesis on its own but significantly potentiates VEGF suppression. Co-regulation of the VEGF and Tie2 signaling pathways has the potential to improve functional and structural outcomes in eyes with retinal vascular diseases.
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Authors | Quan Dong Nguyen, Jeffrey S Heier, Diana V Do, Adam C Mirando, Niranjan B Pandey, Huan Sheng, Theresa Heah |
Journal | International journal of retina and vitreous
(Int J Retina Vitreous)
Vol. 6
Pg. 48
( 2020)
ISSN: 2056-9920 [Print] England |
PMID | 33072401
(Publication Type: Journal Article, Review)
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Copyright | © The Author(s) 2020. |