CUDC ‑907 reverses pathological phenotype of keloid fibroblasts in vitro and in vivo via dual inhibition of PI3K/Akt/mTOR signaling and HDAC2.

CUDC‑907 reverses pathological phenotype of keloid fibroblasts in vitro and in vivo via dual inhibition of PI3K/Akt/mTOR signaling and HDAC2. Int J Mol Med. 2019 Sep 23;: Authors: Tu T, Huang J, Lin M, Gao Z, Wu X, Zhang W, Zhou G, Wang W, Liu W Abstract Keloids are benign skin tumors with a high recurrence rate following surgical excision. Abnormal intracellular signaling is one of the key mechanisms involved in its pathogenesis. Over‑activated phosphoinositide 3‑kinase/RAC‑alpha serine/threonine‑protein kinase/mammalian target of rapamycin (PI3K/Akt/mTOR) signaling pathway and overproduction of histone deacetylases 2 (HDAC2) have also been observed in keloid fibroblasts (KFs). The present study aimed to explore the possibility of reversing the KF pathological phenotype using CUDC‑907, a dual inhibitor of PI3K/Akt/mTOR pathway and HDACs. KFs and keloid xenografts were treated with CUDC‑907 to examine its inhibitory effects on the pathological activities of KFs in vitro and in vivo. CUDC‑907 inhibited cell proliferation, migration, invasion and extracellular matrix deposition of in vitro cultured KFs and also suppressed collagen accumulation and disrupted the capillaries of keloid explants ex vivo and in vivo. A mechanistic study of CUDC‑907 revealed the initiation of cell cycle arrest at G2/M phase along with the enhanced expression of cyclin‑dependent kinase inhibitor 1 and decreased expression of cyclin B in ce...
Source: International Journal of Molecular Medicine - Category: Molecular Biology Authors: Tags: Int J Mol Med Source Type: research