General description

A phenothiazine class antipsychotic and dopamine receptor (DR) antagonist that is reported to exhibit CSCs- (cancer stem cells) differentiating (EC₅₀ ≤9.4 µM for v1H9) and anti-leukemic activity, without affecting non-neoplastic H9 hESC, adult fibroblast-derived iPSC, or HSPCs (hematopoietic stem-progenitor cells). However, Thioridazine′s high effective concentration (10 µM) against cancer cells suggests that other unidentified cellular targets/mechanisms in addition to DR antagonism may be also involved in its overall anti-CSC impact. Effectively augments AraC (Cat. No. 251010) in inhibiting primary AML in vitro colony formation (by 79%, 55%, and 100%, respectively, with 10 µM Thioridazine, 0.1 µM AraC, or a combination of both).

A phenothiazine class dopamine receptor (DR) antagonist that, in addition to its well known clinical use as an antipsychotic for schizophrenia treatment, is also reported to selectively induce the differentiation of neoplastic v1H9 (EC₅₀ ≤9.4 µM in Oct4-GFP reporter assay) and v2H9, but not their parent non-neoplastic H9 hESC or adult fibroblast-derived iPSC. Both Thioridazine′s CSCs- (cancer stem cells) selective differentiation effect and anti-leukemic activity correlate well with the selective DR expression on CSCs and AML cells, but not H9, iPSC, normal HSCs (hematopoietic stem cells) or HSPCs (hematopoietic stem-progenitor cells). However, Thioridazine′s high effective concentration (10 µM) against cancer cells suggests that other unidentified cellular targets/mechanisms in addition to DR antagonism are involved in its overall anti-CSC impact. Effectively augments AraC (Cat. No. 251010) in inhibiting primary AML in vitro colony formation (by 79%, 55%, and 100%, respectively, with 10 µM Thioridazine, 0.1 µM AraC, or a combination of both) without exerting cytotoxic effect on normal HSPCs.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Other Notes

Sachlos, E., et al. 2012. Cell149, 1284.

Packaging

Packaged under inert gas

2 g in Glass bottle

Reconstitution

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.

Warning

Toxicity: Regulatory Review (Z)