Description

• General description: JQ1 is a member of the triazolo-diazepine compound family, which functions as a pan-BET (bromodomain and extra-terminal motif) family inhibitor.[1] JQ1 is known to suppress cell proliferation and therefore, can be used as a therapeutic drug for a number of cancers including multiple myeloma and acute myeloid leukemia.[2]
• Application: (+)-JQ1 has been used in flow cytometry assay, cell viability assay and quantitative PCR assay in order to investigate on the reversal of HIV-1 latency.[3]
• Biochem/physiol Actions: (+)-JQ1 is a high affinity, potent and selective inhibitor of BET bromodomain proteins, including BRD2, BRD3, BRD4 and BRDT. (+)-JQ1 (also known as SGCBD01), the active enantiomer of (+/-)-JQ1, inhibits Brd4 (bromodomain-containing 4), which forms complexes with chromatin via two tandem bromodomains (BD1 and BD2) that bind to acetylated lysine residues in histones and Brd4 association with acetylated chromatin is believed to regulate the recruitment of elongation factor b and additional transcription factors to specific promoter regions. The nuclear protein in testis (NUT) gene is known to form fusions with Brd4 that create a potent oncogene, leading to rare, but highly lethal tumors referred to as NUT midline carcinomas (NMC). (+)-JQ1 inhibits recruitment and binding of Brd4 to TNFa and E-selectin promoter elements, and accelerates recovery time in FRAP (fluorescence recovery after photobleaching) assays using GFP-Brd4. Thus (+)-JQ1 is a useful tool to study the role of Brd4 in transcriptional initiation.For characterization details of (+)-JQ1, please visit the JQ-1 probe summary on the Structural Genomics Consortium (SGC) website.(-)-JQ1 is the negative control for the active enantiomer, (+)-JQ1. (-)-JQ1 is available from Sigma. To learn more about and purchase (-)-JQ1, click here.To learn about other SGC chemical probes for epigenetic targets, visit sigma.com/sgc
• Features and Benefits: (+) JQ-1 is an epigenetic chemical probe available through a partnership with the Structural Genomics Consortium (SGC). To learn more and view other SGC epigenetic probes, visit sigma.com/SGC.
• Other Notes: JQ1 has been expertly reviewed and recommended by the Chemical Probes Portal. For more information, please visit the JQ1 probe summary on the Chemical Probes Portal website.