| Molecular Weight: | 241.31 |
| Formula: | C14H11NOS |
| Purity: | ≥98% |
| CAS#: | 2514-30-9 |
| Solubility: | DMSO up to 50 mM |
| Chemical Name: | 2-4(4-methylphenyl)-1,2-benzisothiazol-3(2H)-one |
| Storage: | Powder: 4oC 1 year. DMSO: 4oC 3 month; -20oC 1 year. |
Biological Activity:
PBIT is a potent, specific, reversible and cell-permeable inhibitor of Jumonji AT-Rich Interactive Domain 1 (JARID1) histone demethylases. It inhibits JARID1B (also known as KDM5B or PLU1) with an IC₅₀ of ~3 μM in vitro. It also inhibits the activity of other related histone demethylases JARID1A, JARID1C, and JMJD2E with IC50 ~6, 4.9, and 28 µM respectively. PBIT does not affect the activity of unrelated UTX and JMJD3 H3K27me3 demethylases. HeLa cells overexpressing full length JARID1B showed a significant increase in H3K4Me3 level following PBIT treatment (~10 µM). It blocks the proliferation of UACC-812 tumor cells expressing higher levels of JARDID1B, but does not significantly affect MCF7 or MCF10A cells expressing lower levels of JARDID1B.
How to Use:
- In vitro: PBIT was used at 10-30 µM in vitro.
- In vivo: n/a
Reference:
- 1. Sayegh J, et al. Identification of small molecule inhibitors of Jumonji AT-rich interactive domain 1B (JARID1B) histone demethylase by a sensitive high throughput screen. (2013) J Biol Chem. 288(13):9408-17.
Products are for research use only. Not for human use.
