Gefitinib, a first-generation EGFR tyrosine kinase inhibitor (EGFR-TKI), is recommended for treatment of non-small cell lung cancer (NSCLC) patients who harbor activating EGFR mutations. However, the tumors of most patients initially sensitive to gefitinib will develop resistance within several months of therapy. Drug resistance is a major obstacle to NSCLC treatment. The novel glutathione transferase P1 (GSTPi) inhibitor 6-(7-nitro-2, 1, 3-benzoxadiazol-4-ylthio) hexanol (NBDHEX) has recently been shown to be active against tumors. In this study, we investigated the and efficacy of NBDHEX against NSCLC. Treatment with NBDHEX inhibited GSTpi enzymatic activity and promoted apoptosis of gefinitb-resistant NSCLC cells. Moreover, NBDHEX reduced tumor growth in mice. These findings indicated that NBDHEX is a good candidate for treatment of NSCLC patients, and that NBDHEX offers a new approach to cancer therapy.
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http://dx.doi.org/10.7150/jca.46461 | DOI Listing |
J Cancer
October 2020
The Affiliated Cancer Hospital of Nanjing Medical University, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Baiziting42, Nanjing 210009, China.
Gefitinib, a first-generation EGFR tyrosine kinase inhibitor (EGFR-TKI), is recommended for treatment of non-small cell lung cancer (NSCLC) patients who harbor activating EGFR mutations. However, the tumors of most patients initially sensitive to gefitinib will develop resistance within several months of therapy. Drug resistance is a major obstacle to NSCLC treatment.
View Article and Find Full Text PDFMetallomics
February 2019
Pharmaceutical Research Center and School of Chemistry and Chemical Engineering, Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research, Southeast University, Nanjing 211189, China.
Cisplatin has been clinically applied in the treatment of osteosarcoma (OS), but its efficacy is severely limited due to drug resistance and metastasis. One of the chief culprits is the overexpression of glutathione S-transferases (GSTs) in cancer cells, which can accelerate the interaction of glutathione (GSH) with cisplatin, reducing its biological effects. In this study, three Pt(iv) complexes derived from cisplatin conjugated with a GST inhibitor (NBDHEX) were designed and synthesized.
View Article and Find Full Text PDFEur J Med Chem
July 2017
European Research Centre for Drug Discovery and Development (NatSynDrugs), Department of Biotechnology, Chemistry, and Pharmacy, Università di Siena via Aldo Moro 2, 53100 Siena, Italy.
Giardia duodenalis is a microaerophilic parasite that colonizes the upper portions of the small intestine of humans. Giardia infection is a major contributor to diarrheal disease worldwide. Nitroheterocycles (e.
View Article and Find Full Text PDFFront Pediatr
August 2014
Department of Pediatrics, New York Medical College, Valhalla, NY , USA ; Department of Pathology, New York Medical College, Valhalla, NY , USA.
Ewing sarcoma is a malignant pediatric bone and soft tissue tumor. Although the 5-year survival rate of localized disease approaches 75%, the prognosis of metastatic and/or therapy-resistant disease remains dismal despite the wide use of aggressive therapeutic strategies. We previously reported that high expression of glutathione S-transferase M4 (GSTM4) in primary tumors correlates with poor patient outcomes.
View Article and Find Full Text PDFCancer Sci
February 2013
Department of Chemical Sciences and Technologies, University of Tor Vergata, Rome, Italy.
Malignant pleural mesothelioma is a poorly responsive tumor known to overexpress the phase II detoxification enzyme glutathione-S-transferase, which catalyzes the conjugation between glutathione and platinum(II)-containing drugs. Therefore, we evaluated the effect of the strong glutathione S-transferase inhibitor NBDHEX on human mesothelioma cell lines (MSTO-211H, MPP89, MM-B1 and Mero 48a) featuring the most common mesothelioma phenotypes: epithelioid and biphasic. Even though a different response to NBDHEX was observed, the molecule was very effective on all cell lines tested, triggering a sustained activation of both JNK and p38, followed by caspase activation and apoptosis.
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