| Identification | Back Directory | [Name]
FX1 | [CAS]
1426138-42-2 | [Synonyms]
FX1
CS-2497
FX-1;FX 1
FX1 >=98% (HPLC)
(Z)-3-(5-(5-chloro-2-oxoindolin-3-ylidene)-4-oxo-2-thioxothiazolidin-3-yl)propanoic acid
(5Z)-5-(5-Chloro-1,2-dihydro-2-oxo-3H-indol-3-ylidene)-4-oxo-2-thioxo-3-thiazolidinepropanoic acid
3-Thiazolidinepropanoic acid, 5-(5-chloro-1,2-dihydro-2-oxo-3H-indol-3-ylidene)-4-oxo-2-thioxo-, (5Z)- | [Molecular Formula]
C14H9ClN2O4S2 | [MDL Number]
MFCD26105080 | [MOL File]
1426138-42-2.mol | [Molecular Weight]
368.82 |
| Chemical Properties | Back Directory | [storage temp. ]
2-8°C | [solubility ]
DMSO:24.22(Max Conc. mg/mL);65.67(Max Conc. mM)
DMF:30.0(Max Conc. mg/mL);81.34(Max Conc. mM) | [form ]
powder | [color ]
white to beige |
| Hazard Information | Back Directory | [Uses]
(5Z)-5-(5-Chloro-1,2-dihydro-2-oxo-3H-indol-3-ylidene)-4-oxo-2-thioxo-3-thiazolidinepropanoic Acid is used in the preparation of substituted isatinylidenerhodanines. BCL6 inhibitor, an anticancer agent. | [Definition]
ChEBI:FX1 is a member of the class of oxindoles that is 5-chloro-oxindole in which the methylene hydrogens at position 3 have been replaced by an N-(2-carboxyethyl)rhodanin-5-ylidene group. It has a role as an antineoplastic agent. It is a member of oxindoles, an organochlorine compound, a thiazolidinone and a monocarboxylic acid. It is functionally related to a 3-methyleneoxindole and a rhodanine. | [Biochem/physiol Actions]
FX1 is a BCL6 inhibitor that effectively blocks BCL6 N-terminal BTB domain-mediated corepressors chromosome recruitment (by 61-87%/SMRT and 67-82%/BCOR; 50 μM FX1 for 30 min) and selectively suppresses BCL6-depenent growth (GI50 16-54 μM; >125 μM against BCL6-independent cells) in diffuse large B cell lymphoma (DLBCL) cultures, exhibiting greater affinity than its structure analog 79-6 or BCL6 corepressor SMRT for BTB domain (KD = 7 μM/FX1, 30 μM/SMRT, 129 μM/79-6). FX1 shows greater efficacy than 79-6 in reversing BCL6/corepressors-mediated target genes repression in vitro (IC50 = 35 μM vs. 318 μM with 79-6 by HEK293T-based reporter assay) and in suppressing OCI-Ly7 DLBCL xenograft tumor growth mice in vivo (100% vs. 45% suppression with respective compound via 25 mg/kg/day i.p.). | [in vivo]
Spleens in FX1-treating mice are macroscopically indistinguishable from vehicle controls. Total B cell abundance measured by flow cytometry is unaffected by FX1. GC B cells (GL7+FAS+B220+) are significantly depleted by exposure to FX1. Splenic architecture is examined by IHC. Staining with B220 antibody reveals normal B cell follicular structures, whereas staining for the GC B cell-specific marker peanut agglutinin shows profound loss of GCs. The half-life is estimated to be approximately 12 hours. Finally, whether FX1 can induce toxic effects in mice is assessed. No signs of toxicity, inflammation, or infection are evident from H&E-stained sections of lung, gastrointestinal tract, heart, kidney, liver, spleen, and bone marrow of the fixed organs from mice treated with FX1 compare with vehicle[1]. | [storage]
Store at -20°C |
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