ArticleMolecular and cellular biochemistry2010
SMT-A07, a 3-(Indol-2-yl) indazole derivative, induces apoptosis of leukemia cells in vitro.
Article in Molecular and cellular biochemistry, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed, 52 citations in OpenAlex.
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8 authors at 1 institution in 1 country.
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Abstract
N-(2-(1H-indazol-3-yl)-1H-pyrrolo[3,2-b]pyridin-5-yl)-4-chloro-N-methylbenzamide (SMT-A07) is a novel 3-(Indol-2-yl) indazole derivative. The anticancer activities in vitro and the cell apoptosis-induction abilities of SMT-A07 on human leukemia HL60 and NB4 cell lines were investigated in this study. The results of MTT assay showed SMT-A07 was a potential and highly efficient antitumor compound with IC(50) values ranging from 0.09 to 1.19 μM in five leukemia cell lines. SMT-A07 treatment for 24 h caused the increment of apoptosis rate from 6.88 to 49.72% in HL60 cells and from 8.72 to 56.28% in NB4 cells by flow cytometry analysis. Agarose gel electrophoresis showed DNA fragmentation that appeared after cells were exposed to SMT-A07. After SMT-A07 incubation, DAPI staining revealed the presence of DNA fragmentation, and perinuclear apoptotic body. SMT-A07 also resulted in a loss of ΔΨm in both HL60 and NB4 cells by JC-1 staining. Moreover, apoptosis-related proteins were examined by western blotting to explore the mechanism of its cytotoxicity. SMT-A07 exposure caused down-regulation and cleavage of procaspase-8, procaspase-3, Bid, PARP and up-regulation of cleaved caspase-8, cleaved caspase-3, PARP (Cleaved Fragment). In addition, the presence of pan-caspase inhibitor BOC-D-FMK prevented cells from caspase-3 activation, PARP cleavage, and subsequent apoptosis. Our study demonstrates that SMT-A07 displays an apparent antitumor activity with extensive anti-leukemia spectrum, and SMT-A07 can induce the apoptosis of HL60 and NB4 cells activation of the caspase cascade, which deserves further development.
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