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Luo Y, Niu M, Liu Y, Zhang M, Deng Y, Mu D, Xu J, Hong S. Oncoproteins E6 and E7 upregulate topoisomerase I to activate the cGAS-PD-L1 pathway in cervical cancer development. Front Pharmacol 2024; 15:1450875. [PMID: 39156107 PMCID: PMC11327024 DOI: 10.3389/fphar.2024.1450875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2024] [Accepted: 07/22/2024] [Indexed: 08/20/2024] Open
Abstract
Background: Cervical cancer (CC) stands as a significant health threat to women globally, with high-risk human papillomaviruses as major etiologic agents. The DNA damage repair (DDR) protein topoisomerase I (TOP1) has been linked to various cancers, yet its distinct roles and mechanisms in CC are not fully elucidated. Methods: We investigated TOP1 expression in cervical intraepithelial neoplasia (CIN) and CC tissues utilizing qRT-PCR and IHC, correlating findings with patient prognosis. Subsequent knockdown studies were performed in vitro and in vivo to evaluate the influence of TOP1 on tumor growth, DNA repair, and inflammatory responses. Results: TOP1 was highly expressed in CIN and CC, negatively correlating with patient prognosis. Inhibition of TOP1 impeded CC cell growth and disrupted DNA repair. TOP1 was shown to regulate tumor-promoting inflammation and programmed death-ligand 1 (PD-L1) production in a cGAS-dependent manner. HPV oncoproteins E6 and E7 upregulated TOP1 and activated the cGAS-PD-L1 pathway. Conclusions: TOP1 acts as a DNA repair mediator, promoting CC development and immune evasion. Targeting the TOP1-cGAS-PD-L1 axis could be a potential therapeutic strategy for CC.
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Affiliation(s)
- Ying Luo
- College of Pharmacy, Chongqing Medical University, Chongqing, China
| | - Mengda Niu
- College of Pharmacy, Chongqing Medical University, Chongqing, China
| | - Yanfei Liu
- College of Pharmacy, Chongqing Medical University, Chongqing, China
| | - Miaochang Zhang
- College of Pharmacy, Chongqing Medical University, Chongqing, China
| | - Yuanyuan Deng
- College of Pharmacy, Chongqing Medical University, Chongqing, China
| | - Dan Mu
- College of Pharmacy, Chongqing Medical University, Chongqing, China
| | - Junfen Xu
- Department of Gynecologic Oncology, Women’s Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Shiyuan Hong
- College of Pharmacy, Chongqing Medical University, Chongqing, China
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Wang J, Xu J, Yang S, He L, Xu W, Liu Y, Cao B, Yu S. SN-38, an active metabolite of irinotecan, inhibits transcription of nuclear factor erythroid 2-related factor 2 and enhances drug sensitivity of colorectal cancer cells. Mol Carcinog 2024; 63:742-756. [PMID: 38270247 DOI: 10.1002/mc.23685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 01/06/2024] [Accepted: 01/14/2024] [Indexed: 01/26/2024]
Abstract
Nuclear factor erythroid 2-related factor 2 (Nrf2) significantly contributes to drug resistance of cancer cells, and Nrf2 inhibitors have been vigorously pursued. Repurposing of existing drugs, especially anticancer drugs, is a straightforward and promising strategy to find clinically available Nrf2 inhibitors and effective drug combinations. Topoisomerase inhibitors SN-38 (an active metabolite of irinotecan), topotecan, mitoxantrone, and epirubicin were found to significantly suppress Nrf2 transcriptional activity in cancer cells. SN-38, the most potent one among them, significantly inhibited the transcription of Nrf2, as indicated by decreased mRNA level and binding of RNA polymerase II to NFE2L2 gene, while no impact on Nrf2 protein or mRNA degradation was observed. SN-38 synergized with Nrf2-sensitive anticancer drugs such as mitomycin C in killing colorectal cancer cells, and irinotecan and mitomycin C synergistically inhibited the growth of SW480 xenografts in nude mice. Our study identified SN-38 and three other topoisomerase inhibitors as Nrf2 inhibitors, revealed the Nrf2-inhibitory mechanism of SN-38, and indicate that clinically feasible drug combinations could be designed based on their interactions with Nrf2 signaling.
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Affiliation(s)
- Jingya Wang
- State Key Laboratory of Natural and Biomimetic Drugs, Department of Molecular and Cellular Pharmacology, Peking University School of Pharmaceutical Sciences, Beijing, P.R. China
- Key Laboratory of State Administration of Traditional Chinese Medicine for Compatibility Toxicology, Peking University Health Science Center, Beijing, P.R. China
| | - Jiangli Xu
- State Key Laboratory of Natural and Biomimetic Drugs, Department of Molecular and Cellular Pharmacology, Peking University School of Pharmaceutical Sciences, Beijing, P.R. China
| | - Shuhui Yang
- State Key Laboratory of Natural and Biomimetic Drugs, Department of Molecular and Cellular Pharmacology, Peking University School of Pharmaceutical Sciences, Beijing, P.R. China
- Key Laboratory of State Administration of Traditional Chinese Medicine for Compatibility Toxicology, Peking University Health Science Center, Beijing, P.R. China
| | - Liu He
- State Key Laboratory of Natural and Biomimetic Drugs, Department of Molecular and Cellular Pharmacology, Peking University School of Pharmaceutical Sciences, Beijing, P.R. China
| | - Wenhuai Xu
- State Key Laboratory of Natural and Biomimetic Drugs, Department of Molecular and Cellular Pharmacology, Peking University School of Pharmaceutical Sciences, Beijing, P.R. China
- Key Laboratory of State Administration of Traditional Chinese Medicine for Compatibility Toxicology, Peking University Health Science Center, Beijing, P.R. China
| | - Yan'e Liu
- Department of Medical Oncology and Radiation Sickness, Peking University Third Hospital, Beijing, China
| | - Baoshan Cao
- Department of Medical Oncology and Radiation Sickness, Peking University Third Hospital, Beijing, China
| | - Siwang Yu
- State Key Laboratory of Natural and Biomimetic Drugs, Department of Molecular and Cellular Pharmacology, Peking University School of Pharmaceutical Sciences, Beijing, P.R. China
- Key Laboratory of State Administration of Traditional Chinese Medicine for Compatibility Toxicology, Peking University Health Science Center, Beijing, P.R. China
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Belapurkar R, Pfisterer M, Dreute J, Werner S, Zukunft S, Fleming I, Kracht M, Schmitz ML. A transient increase of HIF-1α during the G1 phase (G1-HIF) ensures cell survival under nutritional stress. Cell Death Dis 2023; 14:477. [PMID: 37500648 PMCID: PMC10374543 DOI: 10.1038/s41419-023-06012-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 07/11/2023] [Accepted: 07/17/2023] [Indexed: 07/29/2023]
Abstract
The family of hypoxia-inducible transcription factors (HIF) is activated to adapt cells to low oxygen conditions, but is also known to regulate some biological processes under normoxic conditions. Here we show that HIF-1α protein levels transiently increase during the G1 phase of the cell cycle (designated as G1-HIF) in an AMP-activated protein kinase (AMPK)-dependent manner. The transient elimination of G1-HIF by a degron system revealed its contribution to cell survival under unfavorable metabolic conditions. Indeed, G1-HIF plays a key role in the cell cycle-dependent expression of genes encoding metabolic regulators and the maintenance of mTOR activity under conditions of nutrient deprivation. Accordingly, transient elimination of G1-HIF led to a significant reduction in the concentration of key proteinogenic amino acids and carbohydrates. These data indicate that G1-HIF acts as a cell cycle-dependent surveillance factor that prevents the onset of starvation-induced apoptosis.
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Affiliation(s)
- Ratnal Belapurkar
- Institute of Biochemistry, Justus-Liebig-University, Member of the German Center for Lung Research, Giessen, Germany
| | - Maximilian Pfisterer
- Institute of Biochemistry, Justus-Liebig-University, Member of the German Center for Lung Research, Giessen, Germany
| | - Jan Dreute
- Institute of Biochemistry, Justus-Liebig-University, Member of the German Center for Lung Research, Giessen, Germany
| | - Sebastian Werner
- Rudolf Buchheim Institute of Pharmacology, Justus-Liebig-University, Member of the German Center for Lung Research, Giessen, Germany
| | - Sven Zukunft
- Institute for Vascular Signalling, Goethe University, Frankfurt am Main, Germany
| | - Ingrid Fleming
- Institute for Vascular Signalling, Goethe University, Frankfurt am Main, Germany
- German Center of Cardiovascular Research (DZHK), Partner site RheinMain, Frankfurt am Main, Germany
| | - Michael Kracht
- Rudolf Buchheim Institute of Pharmacology, Justus-Liebig-University, Member of the German Center for Lung Research, Giessen, Germany
| | - M Lienhard Schmitz
- Institute of Biochemistry, Justus-Liebig-University, Member of the German Center for Lung Research, Giessen, Germany.
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Jiang W, He F, Ding G, Wu J. Topotecan Reduces Neuron Death after Spinal Cord Injury by Suppressing Caspase-1-Dependent Pyroptosis. Mol Neurobiol 2022; 59:6033-6048. [DOI: 10.1007/s12035-022-02960-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 07/07/2022] [Indexed: 12/15/2022]
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Jiang W, He F, Ding G, Wu J. Topoisomerase 1 inhibition modulates pyroptosis to improve recovery after spinal cord injury. FASEB J 2022; 36:e22294. [PMID: 35579890 DOI: 10.1096/fj.202100713rr] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 02/28/2022] [Accepted: 03/20/2022] [Indexed: 11/11/2022]
Abstract
Excessive neuroinflammation and neuronal loss contribute to mechanisms of spinal cord injury (SCI). Accumulating evidence has suggested that topoisomerase 1 (Top1) inhibition can suppress exacerbated immune responses and protect against lethal inflammation. Pyroptosis is a recently identified pro-inflammatory programmed mode of cell death. However, the effects and underlying mechanisms of Top1 inhibition in SCI remains unclear. Locomotor functional recovery in mice was evaluated through Basso Mouse Scale (BMS). Neuronal loss was evaluated by immunochemistry staining of NeuN. Pyroptosis was determined by immunofluorescence staining, western blot, flow cytometry, cell viability, and cytotoxicity assays. In the present study, we estimated the effects of chemical inhibition of Top1 in an SCI model. Administration of Top1 inhibitor camptothecin (CPT) to mice significantly improved locomotor functional recovery after SCI. Moreover, CPT reduced Top1 level, inhibited nucleotide-binding oligomerization domain-like receptor 3 (NLRP3) inflammasome activation and pyroptosis, attenuated proinflammatory cytokines levels, diminished the number of neutrophil and neuronal loss in mice. Furthermore, CPT in oxygen-glucose deprivation neurons down-regulated Top1 level, attenuated NLRP3 inflammasome activation, and suppressed pyroptosis and inflammatory response. Together, our findings indicate that inhibition of Top1 with CPT can inhibit pyroptosis, control neuroinflammation, and improve functional recovery after SCI.
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Affiliation(s)
- Wu Jiang
- Department of Orthopedics, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Department of Orthopedics, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Fan He
- Department of Orthopedics, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Guoming Ding
- Department of Orthopedics, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Junsong Wu
- Department of Orthopedics, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
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Irinotecan (CPT-11) Canonical Anti-Cancer Drug Can also Modulate Antiviral and Pro-Inflammatory Responses of Primary Human Synovial Fibroblasts. Cells 2021; 10:cells10061431. [PMID: 34201243 PMCID: PMC8230279 DOI: 10.3390/cells10061431] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 05/21/2021] [Accepted: 05/24/2021] [Indexed: 11/29/2022] Open
Abstract
Alphaviruses are a group of arboviruses that generate chronic inflammatory rheumatisms in humans. Currently, no approved vaccines or antiviral therapies are available to prevent or treat alphavirus-induced diseases. The aim of this study was to evaluate the repositioning of the anti-cancer molecule irinotecan as a potential modulator of the antiviral and inflammatory responses of primary human synovial fibroblasts (HSF), the main stromal cells of the joint synovium. HSF were exposed to O’nyong-nyong virus (ONNV) and polyinosinic-polycytidylic acid (PIC) to mimic, respectively, acute and chronic infectious settings. The cytokine IL-1β was used as a major pro-inflammatory cytokine to stimulate HSF. Quantitative RT-PCR analysis revealed that irinotecan at 15 µM was able to amplify the antiviral response (i.e., interferon-stimulated gene expression) of HSF exposed to PIC and reduce the expression of pro-inflammatory genes (CXCL8, IL-6 and COX-2) upon IL-1β treatment. These results were associated with the regulation of the expression of several genes, including those encoding for STAT1, STAT2, p53 and NF-κB. Irinotecan did not modulate these responses in both untreated cells and cells stimulated with ONNV. This suggests that this drug could be therapeutically useful for the treatment of chronic and severe (rather than acute) arthritis due to viruses.
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Han J, Li S, Feng Y, He Y, Hong W, Ye Z. A novel circular RNA (hsa_circ_0059930)-mediated miRNA-mRNA axis in the lipopolysaccharide-induced acute lung injury model of MRC-5 cells. Bioengineered 2021; 12:1739-1751. [PMID: 34002668 PMCID: PMC8806270 DOI: 10.1080/21655979.2021.1916276] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Circular RNA (circRNA) is a class of newly discovered endogenous non-coding RNA with closed circular structure. Some circRNAs have been reported to be closely associated with acute lung injury (ALI). While the expression profile of circRNAs in lipopolysaccharide (LPS)-induced ALI and the underlying roles are still not completely clear. The LPS-induced ALI model of MRC-5 cells was first established, and the expression profiles of circRNAs and mRNAs in LPS-induced MRC-5 cells were confirmed through RNA sequencing analysis. Gene Ontologyanalysis and Kyoto Encyclopedia of Genes and Genomes pathway analysis were also applied to predict the latent functions and pathways of the differential mRNAs. After hsa_circ_0059930 knockdown, the proliferation and apoptosis of MRC-5 cells were identified by CCK-8, flow cytometer, and western blot assays. And we predicted the network analysis of hsa_circ_0059930. We testified that LPS could markedly prevent proliferation and induce apoptosis of MRC-5 cells. We discovered a total of 820 differential circRNAs (560 upregulated and 260 downregulated circRNAs) and 484 differential mRNAs (240 upregulated and 244 downregulated mRNAs) in LPS-induced MRC-5 cells. Besides, hsa_circ_0059930 was identified to be significantly upregulated in LPS-induced MRC-5 cells, and knockdown of hsa_circ-0059930 could notably accelerate proliferation and suppress apoptosis of LPS-mediated MRC-5 cells. Moreover, through the network analysis of hsa_circ_0059930, we preliminarily screened the potential regulatory axis hsa_circ_0059930/hsa-miR-382-5p/Topoisomerase 1 (TOP1) in LPS-induced ALI. Our data contribute to understand the importance of circRNAs and mRNAs in LPS-induced ALI. We also provided many hsa_circ_0059930-mediated microRNA (miRNA)–mRNA axis, especially hsa_circ_0059930/hsa-miR-382-5p/TOP1 in LPS-induced ALI.
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Affiliation(s)
- Jianhua Han
- Department of Emergency, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Shigeng Li
- Department of Emergency, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yawei Feng
- Department of Anesthesiology, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yufeng He
- Department of Emergency, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Weilong Hong
- Department of Emergency, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zhiqiang Ye
- Department of Emergency, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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Regulation of Transcription Factor NF-κB in Its Natural Habitat: The Nucleus. Cells 2021; 10:cells10040753. [PMID: 33805563 PMCID: PMC8066257 DOI: 10.3390/cells10040753] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 03/24/2021] [Accepted: 03/24/2021] [Indexed: 01/11/2023] Open
Abstract
Activation of the transcription factor NF-κB elicits an individually tailored transcriptional response in order to meet the particular requirements of specific cell types, tissues, or organs. Control of the induction kinetics, amplitude, and termination of gene expression involves multiple layers of NF-κB regulation in the nucleus. Here we discuss some recent advances in our understanding of the mutual relations between NF-κB and chromatin regulators also in the context of different levels of genome organization. Changes in the 3D folding of the genome, as they occur during senescence or in cancer cells, can causally contribute to sustained increases in NF-κB activity. We also highlight the participation of NF-κB in the formation of hierarchically organized super enhancers, which enable the coordinated expression of co-regulated sets of NF-κB target genes. The identification of mechanisms allowing the specific regulation of NF-κB target gene clusters could potentially enable targeted therapeutic interventions, allowing selective interference with subsets of the NF-κB response without a complete inactivation of this key signaling system.
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Identification of Predictive Biomarkers of Response to HSP90 Inhibitors in Lung Adenocarcinoma. Int J Mol Sci 2021; 22:ijms22052538. [PMID: 33802597 PMCID: PMC7962034 DOI: 10.3390/ijms22052538] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/19/2021] [Accepted: 02/27/2021] [Indexed: 12/17/2022] Open
Abstract
Heat shock protein 90 (HSP90) plays an essential role in lung adenocarcinoma, acting as a key chaperone involved in the correct functioning of numerous highly relevant protein drivers of this disease. To this end, HSP90 inhibitors have emerged as promising therapeutic strategies, even though responses to them have been limited to date. Given the need to maximize treatment efficacy, the objective of this study was to use isobaric tags for relative and absolute quantitation (iTRAQ)-based proteomic techniques to identify proteins in human lung adenocarcinoma cell lines whose basal abundances were correlated with response to HSP90 inhibitors (geldanamycin and radicicol derivatives). From the protein profiles identified according to response, the relationship between lactate dehydrogenase B (LDHB) and DNA topoisomerase 1 (TOP1) with respect to sensitivity and resistance, respectively, to geldanamycin derivatives is noteworthy. Likewise, rhotekin (RTKN) and decaprenyl diphosphate synthase subunit 2 (PDSS2) were correlated with sensitivity and resistance to radicicol derivatives. We also identified a relationship between resistance to HSP90 inhibition and the p53 pathway by glucose deprivation. In contrast, arginine biosynthesis was correlated with sensitivity to HSP90 inhibitors. Further study of these outcomes could enable the development of strategies to improve the clinical efficacy of HSP90 inhibition in patients with lung adenocarcinoma.
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Do We Really Need Another Special Issue on NF-κB in Cancer and Inflammation? Cancers (Basel) 2019; 11:cancers11121978. [PMID: 31835312 PMCID: PMC6966584 DOI: 10.3390/cancers11121978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 12/05/2019] [Indexed: 11/22/2022] Open
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