Entinostat (MS-275)

PubMed: 24203492      Pharm Res

HCT-15 or fresh primary NK cells were treated with entinostat for 24 h, and AcH3, AcH4, and HDAC1, 2, and 3 were detected by Western blotting. 

PubMed: 19148581      J Neurooncol

Induction of PARP cleavage in Daoy cells upon exposure to MS-275 was demonstrated by Western blot analyses using antibodies that recognize the cleaved 89 kDa PARP protein. Pan-Actin (45 kDa) was used as a loading control.

PubMed: 19148581      J Neurooncol

Cleavage of pro-Caspase-8 was demonstrated by Western blotting with extracts prepared from Daoy cells treated with 2.5 µM MS-275 for various time periods. Antibodies specific to human Caspase-8 or the loading control, pan-Actin were used to probe protein expression.

PubMed: 19148581      J Neurooncol

Western blotting to detect DR4 and DR5 expression upon treatment of Daoy cells with 2.5 µM MS-275 for 4, 8 and 24 h.

PubMed: 21254166      Hepatology

Upper panel, concentration-dependent effects of AR42, MS-275 and vorinostat on the expression of topoIIα versus topoIIβ after 48 h. Lower panel, time-dependent effect of 0.5 μM AR42 and 5 μM MS-275 on topoIIα versus topoIIβ expression in PLC-5 cells.

PubMed: 29855565      Sci Rep

(C) Effect of MS-275 treatment on Snail expression and localization. MCs (mesothelial cells) were treated with MS-275 (250 nM), or DMSO for 48 hr and then stimulated with TGFβ1 (2 ng/ml) for 24 h before processing for immunofluorescence with a monoclonal antibody against Snail. Cell nuclei are shown in blue (Hoechst 33342). Confocal images are shown from one representative experiment of three performed.

PubMed: 19148581      J Neurooncol

Flow Cytometry to measure cell surface expression of FAS, DR4 and DR5 using PE-labeled antibodies. Cells stained with isotype matched anti-human IgG antibodies served as controls.

PubMed: 22468166      Mol Cell Pharmacol

Immunocytochemical analysis of the effects of AR42, SAHA, and MS-275 at the indicated concentrations on H3K4Me3 (upper panels) and H3K9Me3 (lower panels) after 24 h of treatment in LNCaP cells.

PubMed: 24203492      Pharm Res

(A) HCT-15 cells were cultured in indicated concentrations of entinostat for up to 72 h, and proliferation determined by MTT assay as indicated. (B) HCT-15, CCH-OS-D, COL and HOS cells were cultured in indicated concentrations of entinostat for 72 h, and viable cell number was determined using the Vi-cell assay and proliferation index calculated. (C) Freshly-isolated human NK cells were cultured in indicated concentrations of entinostat for up to 72 h, and viability was assessed by flow cytometry for 7-AAD uptake. *, P < 0.05, **; P ≤ 0.01; ***, P ≤ 0.001

PubMed: 28969017      Oncotarget

PANC-1, MIA PaCa-2, BxPC3, CFPAC-1, SUIT2 and SUIT2 Clone 1 cells were plated at a density of 3-5×103 per well in 96-well microtiter plates, allowed to adhere overnight and incubated for 72 hours in the presence of variable concentrations of entinostat (0-100μM). Cell viability was determined by XTT assays. The data presented are the mean values from triplicate wells from two independent experiments ±SE.

PubMed: 24241152      Molecules

MS-275 and SAHA suppressed the secretion of GCP-2, MCP-2 and MIF in E11 cells. (A) GCP suppression. (B) MCP-2 suppression. (C) MIF suppression. E11 cells were incubated with HDAC inhibitors at various concentrations for 1 h before they were stimulated by LPS. 24 h later, the secretion of GCP-2, MCP-2 and MIF were quantified by ELISA (n = 8). Bars show the mean and SD in (A–C).