Abstract:
:Cancer cells isolated from two patients with malignant non-Hodgkin B-cell lymphomas that became resistant to chemotherapy during clinical treatment were made ≥fourfold resistant in culture to anticancer drugs, that is cisplatin, etoposide, methotrexate and bortezomib. Because most resistant lines showed significantly increased expression of the anti-oxidative enzyme glutathione peroxidase 1 (GPx1), GPx1 was investigated as a target for inhibitor development. Virtual screening of a library of diverse structures by docking them to the active site of the X-ray crystal structure of bovine GPx1 uncovered compounds that might block the enzyme. An enzyme assay confirmed an acylhydrazone heterocycle (3) with GPx inhibitory activity. Combinations of 3 with the anticancer drugs listed above led to reversal of resistance in the lymphoma cell lines.
journal_name
Bioorg Med Chem Lettjournal_title
Bioorganic & medicinal chemistry lettersauthors
Schulz R,Emmrich T,Lemmerhirt H,Leffler U,Sydow K,Hirt C,Kiefer T,Link A,Bednarski PJdoi
10.1016/j.bmcl.2012.08.091subject
Has Abstractpub_date
2012-11-01 00:00:00pages
6712-5issue
21eissn
0960-894Xissn
1464-3405pii
S0960-894X(12)01102-Xjournal_volume
22pub_type
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