Journal
JOURNAL OF ENZYME INHIBITION AND MEDICINAL CHEMISTRY
Volume 31, Issue -, Pages 83-88Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/14756366.2016.1205046
Keywords
Anticancer activity; antiproliferative activity; apoptosis; azaphenothiazines; caspases
Funding
- Medical University of Silesia [KNW-1-004/K/4/0]
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Azaphenothiazines containing the quinoline ring, 8-10-substituted 6H-quinobenzothiazines and 6H-diquinothiazine were transformed into new 6-propargyl and 6-dialkylaminobutynyl derivatives containing the triple bond. Most of them displayed strong antiproliferative actions against human peripheral blood mononuclear cells (PBMC) stimulated with phytohemagglutinin A (PHA), strongly suppressed lipopolysaccharide (LPS)-induced TNF- production by whole blood human cell cultures, and exhibited low cytotoxicity. Three propargylquinobenzothiazines with the bromine, trifluoromethyl, and methylthio groups at position 9 and propargyldiquinothiazine exhibited comparable actions to cisplatin against the L-1210 and SW-948 tumor lines. 6-Propargyl-9-trifluoromethylquinobenzothiazine was shown to block caspase 3 expression and inhibit expression of caspase 8 and 9 in Jurkat cells indicating its possible mechanism of action. These derivatives could be promising, potential therapeutics for treatment of neoplastic diseases and autoimmune disorders.
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