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Targeting Relevant Hdacs to Support the Survival of Cone Photoreceptors in Inherited Retinal Diseases: Identification of a Potent Pharmacological Tool With in Vitro and in Vivo Efficacy Publisher Pubmed

Summary: Study develops potent HDAC6 inhibitor for cone cell preservation in retinal disease models. #RetinalDisease #HDACInhibitors

Carullo G1 ; Orsini N2, 3 ; Piano I4 ; Pozzetti L1 ; Papa A1 ; Fontana A1 ; Napoli D2, 3 ; Corsi F4 ; Marco BD2, 3 ; Galante A4 ; Marotta L1 ; Panzeca G1 ; Obrien J5 ; Sanchez AG5 Show All Authors
Authors
  1. Carullo G1
  2. Orsini N2, 3
  3. Piano I4
  4. Pozzetti L1
  5. Papa A1
  6. Fontana A1
  7. Napoli D2, 3
  8. Corsi F4
  9. Marco BD2, 3
  10. Galante A4
  11. Marotta L1
  12. Panzeca G1
  13. Obrien J5
  14. Sanchez AG5
  15. Doherty H5
  16. Mahon N5
  17. Clarke L5
  18. Contri C6
  19. Pasquini S7
  20. Gorelli B8
  21. Saponara S8
  22. Valoti M8
  23. Vincenzi F7
  24. Varani K7
  25. Ramunno A9
  26. Brogi S4
  27. Butini S1
  28. Gemma S1
  29. Kennedy BN5
  30. Gargini C4
  31. Strettoi E2
  32. Campiani G1, 10

Source: Journal of Medicinal Chemistry Published:2024


Abstract

Inherited retinal diseases, which include retinitis pigmentosa, are a family of genetic disorders characterized by gradual rod-cone degeneration and vision loss, without effective pharmacological treatments. Experimental approaches aim to delay disease progression, supporting cones’ survival, crucial for human vision. Histone deacetylases (HDACs) mediate the activation of epigenetic and nonepigenetic pathways that modulate cone degeneration in RP mouse models. We developed new HDAC inhibitors (5a-p), typified by a tetrahydro-γ-carboline scaffold, characterized by high HDAC6 inhibition potency with balanced physicochemical properties for in vivo studies. Compound 5d (repistat, IC50 HDAC6 = 6.32 nM) increased the levels of acetylated α-tubulin compared to histone H3 in ARPE-19 and 661W cells. 5d promoted vision rescue in the atp6v0e1-/- zebrafish model of photoreceptor dysfunction. A single intravitreal injection of 5d in the rd10 mouse model of RP supported morphological and functional preservation of cone cells and maintenance of the retinal pigment epithelium array. © 2024 American Chemical Society.