PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 17594095-1 2008 PURPOSE: To possibly increase the in vitro cytotoxic activity of arsenic trioxide (ATO) by combining it with Parthenolide (PRT), a known NF-kappaB inhibitor and buthionine sulfoximine (BSO), an inhibitor of gamma-glutamylcysteine synthetase. parthenolide 109-121 glutamate-cysteine ligase catalytic subunit Homo sapiens 207-240