The invention discloses application of antisense
nucleotide for inhibiting NEAT1 in a targeted parasite
assembly domain to treatment, improvement or prevention of fundus
neovascularization, and belongs to the technical field of biological
medicine. The invention finds that NEAT1 and downstream pro-
angiogenesis factors CYR61 and FGF2 are obviously up-regulated in wet age-related
macular degeneration patients and CNV model mice. According to the invention, the NEAT1 in the
retina and the
choroid is efficiently inhibited by designing ASO of a specific targeting lncRNA NEAT1 functional key domain, namely, a para-plaque
assembly domain. Furthermore, ASO of a targeted mouse Neat1 homologous domain is subjected to intraocular injection, and
laser-induced CNV focus formation can be remarkably inhibited
in vivo. The invention provides a candidate
drug for treating fundus
neovascularization, which is independent of the traditional VEGF pathway and novel in action mechanism, and provides a new solution for patients who are insensitive to anti-VEGF therapy or need long-acting treatment.