ReferenceID 2541
Oroxylin A reverses hypoxia-induced cisplatin resistance through inhibiting HIF-1α mediated XPC transcription
Oncogene
Hypoxia is a key concern during the treatment of non-small cell lung cancer (NSCLC), and hypoxia-inducible factor 1 alpha (HIF-1alpha) has been associated with increased tumor resistance to therapeutic modalities such as
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Record Fields
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- Reference Id
- 2541
- Evidence Id
- 19131
- Core Evidence Id
- 19131
- Source Reference Id
- 5090
- Herb2 Reference Id
- HBREF005887
- Subject Paper Key
- HBIN038303_32978517
- Pubmed Id
- 32978517
- Doi
- 10.1038/s41388-020-01474-x
- Paper Title
- Oroxylin A reverses hypoxia-induced cisplatin resistance through inhibiting HIF-1α mediated XPC transcription
- Paper Abstract
- Hypoxia is a key concern during the treatment of non-small cell lung cancer (NSCLC), and hypoxia-inducible factor 1 alpha (HIF-1alpha) has been associated with increased tumor resistance to therapeutic modalities such as cisplatin. Compensatory activation of nucleotide excision repair (NER) pathway is the major mechanism that accounts for cisplatin resistance. In the present study, we suggest a novel strategy to improve the treatment of NSCLC and overcome the hypoxia-induced cisplatin resistance by cotreatment with Oroxylin A, one of the main bioactive flavonoids of Scutellariae radix. Based on the preliminary screening, we found that xeroderma pigmentosum group C (XPC), an important DNA damage recognition protein involved in NER, dramatically increased in hypoxic condition and contributed to hypoxia-induced cisplatin resistance. Further data suggested that Oroxylin A significantly reversed the hypoxia-induced cisplatin resistance through directly binding to HIF-1alpha bHLH-PAS domain and blocking its binding to HRE3 transcription factor binding sites on XPC promoter which is important to hypoxia-induced XPC transcription. Taken together, our findings not only demonstrate a crucial role of XPC dependent NER in hypoxia-induced cisplatin resistance, but also suggest a previously unrecognized tumor suppressive mechanism of Oroxylin A in NSCLC which through sensitization of cisplatin-mediated growth inhibition and apoptosis under hypoxia.
- Journal
- Oncogene
- Publish Year
- 2020
- Experiment Subject
- Experiment Type
- Animal & Cell Experiment
- Phenotype Related
- Xeroderma Pigmentosum; Tumor; Non-small Cell Lung Cancer
- Paper Title Cn
- Paper Title En
- Oroxylin A reverses hypoxia-induced cisplatin resistance through inhibiting HIF-1α mediated XPC transcription
- Bilingual Status
- semi_complete