Abstract:
BACKGROUND:The present study investigated the mechanism underlying the apoptosis of MKN28 human gastric cancer cells induced by the phosphatidylinositol (PI) derivative 1,2-O-bis-[8-{2-(2-pentyl-cyclopropylmethyl)-cyclopropyl}-octanoyl]-sn-glycero-3-phosphatidyl-D-1-inositol (diDCP-LA-D-PI) and its enantiomer diDCP-LA-L-PI. MATERIALS AND METHODS:3-(4,5-Dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay, terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling (TUNEL) staining, enzymatic caspase assay, real-time reverse transcription-polymerase chain reaction (RT-PCR), and western blotting were carried-out. RESULTS:Both diDCP-LA-D-PI and diDCP-LA-L-PI induced caspase-independent apoptosis of MKN28 cells, with the potential for diDCP-LA-L-PI being much greater than that of diDCP-LA-D-PI. diDCP-LA-D-PI and diDCP-LA-L-PI accumulated apoptosis-inducing factor (AIF) and AIF-homologous mitochondrion-associated inducer of death (AMID) in the nucleus. CONCLUSION:diDCP-LA-D-PI and diDCP-LA-L-PI induce caspase-independent apoptosis of MKN28 cells by accumulating AIF and AMID in the nucleus, with different potentials.
journal_name
Anticancer Resjournal_title
Anticancer researchauthors
Ohyama M,Tsuchiya A,Kaku Y,Kanno T,Shimizu T,Tanaka A,Nishizaki Tsubject
Has Abstractpub_date
2015-12-01 00:00:00pages
6563-71issue
12eissn
0250-7005issn
1791-7530pii
35/12/6563journal_volume
35pub_type
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