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Ref Type Journal Article
PMID (26831668)
Authors Zhijun H, Shusheng W, Han M, Jianping L, Li-Sen Q, Dechun L
Title Pre-clinical characterization of 4SC-202, a novel class I HDAC inhibitor, against colorectal cancer cells.
Journal Vol Issue Date Pages Journal Short Title
Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine 37 8 2016 Aug 10257-67 Tumour Biol
URL
Abstract Text Histone deacetylase (HDAC) overactivity in colorectal cancer (CRC) promotes cancer progression. In the current study, we showed that 4SC-202, a novel class I HDAC inhibitor (HDACi), potently inhibited survival and proliferation of primary human colon cancer cells and established CRC lines (HT-29, HCT-116, HT-15, and DLD-1). Yet, the same 4SC-202 treatment was non-cytotoxic to colon epithelial cells where HDAC-1/-2 expressions were extremely low. 4SC-202 provoked apoptosis activation in CRC cells, while caspase inhibitors (z-VAD-CHO and z-DVED-CHO) significantly alleviated 4SC-202-exerted cytotoxicity in CRC cells. Meanwhile, 4SC-202 induced dramatic G2-M arrest in CRC cells. Further studies showed that AKT activation might be an important resistance factor of 4SC-202. 4SC-202-induced cytotoxicity was dramatically potentiated with serum starvation, AKT inhibition (by perifosine or MK-2206), or AKT1-shRNA knockdown in CRC cells. On the other hand, exogenous expression of constitutively active AKT1 (CA-AKT1) decreased the sensitivity by 4SC-202 in HT-29 cells. Notably, 4SC-202, at a low concentration, enhanced oxaliplatin-induced in vitro anti-CRC activity. In vivo, we showed that oral gavage of 4SC-202 inhibited HT-29 xenograft growth in nude mice, and when combined with oxaliplatin, its activity was further strengthened. Together, these pre-clinical results indicate that 4SC-202 may be further investigated as a valuable anti-CRC agent/chemo-adjuvant.

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Molecular Profile Treatment Approach
Gene Name Source Synonyms Protein Domains Gene Description Gene Role
Therapy Name Drugs Efficacy Evidence Clinical Trials
Drug Name Trade Name Synonyms Drug Classes Drug Description
Gene Variant Impact Protein Effect Variant Description Associated with drug Resistance
Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References