1. FV-429 enhances the efficacy of paclitaxel in NSCLC by reprogramming HIF-1α-modulated FattyAcid metabolism.
- Author
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Guo Y, Yang L, Guo W, Wei L, and Zhou Y
- Subjects
- A549 Cells, Active Transport, Cell Nucleus drug effects, Animals, Antineoplastic Agents, Phytogenic administration & dosage, Antineoplastic Agents, Phytogenic toxicity, Antineoplastic Combined Chemotherapy Protocols toxicity, Cell Line, Tumor, Drug Resistance, Neoplasm, Drug Synergism, Fatty Acids metabolism, Flavonoids toxicity, G2 Phase Cell Cycle Checkpoints drug effects, Humans, Mice, Mice, Inbred BALB C, Mice, Nude, Paclitaxel toxicity, Tumor Hypoxia drug effects, Wnt Signaling Pathway drug effects, Xenograft Model Antitumor Assays, beta Catenin metabolism, Antineoplastic Combined Chemotherapy Protocols administration & dosage, Carcinoma, Non-Small-Cell Lung drug therapy, Carcinoma, Non-Small-Cell Lung metabolism, Flavonoids administration & dosage, Hypoxia-Inducible Factor 1, alpha Subunit metabolism, Lung Neoplasms drug therapy, Lung Neoplasms metabolism, Paclitaxel administration & dosage
- Abstract
Solid tumors often exhibit hypoxia in their centers, which has been associated with a marked reduction in the sensitivity of the tumor cells to anti-tumor and chemotherapeutic interventions. Here, we found that the occurrence and progress of hypoxic insensitivity to paclitaxel in non-small cell lung cancer (NSCLC) are closely associated with the HIF-1α pathway. The HIF-1α protein upregulated the expression of adipose differentiation-related protein (ADRP), fatty acid synthase (FASN), and sterol regulatory element binding protein 1(SREBP1), while simultaneously downregulating carnitine palmitoyltransferase 1 (CPT1), thereby leading to a more pronounced uptake of lipids and reduced oxidation of fatty acids. Diminished levels of fatty acids led to reduced Wnt pathway activation and β-catenin nuclear translocation, leading to G2/M cell cycle arrest. In this study, FV-429, a derivative of the natural flavonoid wogonin, reprogrammed metabolism of cancer cells and decreased fatty acid levels. Moreover, paclitaxel-induced G2/M phase arrest in hypoxia-resistant NSCLC was hampered but FV-429 improved the sensitivity of these cancer cells to paclitaxel. FV-429 activated and modulated fatty acid metabolism in NSCLC cells, significantly reduced levels of fatty acids within cells and increased the oxidation of these fatty acids. The results of our study demonstrated that FV-429 could reshape fatty acid metabolism in hypoxia-induced paclitaxel-resistant NSCLC and enhance the sensitivity of NSCLC cells to paclitaxel through G2/M phase arrest deterioration, by inactivating the Wnt pathway, and suggested the possibility of using FV-429 as a promising candidate therapeutic agent for advanced NSCLC., (Copyright © 2021 Elsevier B.V. All rights reserved.)
- Published
- 2021
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