501
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Xie B, Liu T, Chen S, Zhang Y, He D, Shao Q, Zhang Z, Wang C. Combination of DNA demethylation and chemotherapy to trigger cell pyroptosis for inhalation treatment of lung cancer. NANOSCALE 2021; 13:18608-18615. [PMID: 34730599 DOI: 10.1039/d1nr05001j] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Pyroptosis is an inflammation-dependent and self-cascade amplifying type of programmed cell death, serving as an effective means for activating the local immune response and improving the anticancer efficacy. As the effector of pyroptosis, gasdermin-E (GSDME) is silenced in most tumor cells. The gene silencing can be reversed by DNA demethylation, but the systemic side effects and toxicity of chemotherapeutic agents are inevitable. In this work, inhaled poly(lactic-co-glycolic acid) (PLGA) porous microspheres loaded with Decitabine (DAC) and Doxorubicin (DOX) (denoted as CO-MPs) were prepared to induce cell pyroptosis for orthotopic lung cancer therapy with fewer systemic side effects. The CO-MPs showed a hollow and porous spherical morphology and exhibited an excellent aerodynamic property, lung distribution and a sustained release effect. The CO-MPs could reverse GSDME silencing and elevate the expression of cleaved-caspase 3 in tumor cells. The cleaved-caspase 3 protein cleaved the GSDEM protein to obtain GSDME-N protein, causing the rupture of cell plasma membranes, release of cell contents and activation of the immune system. The CO-MPs could lead to the suppression of lung tumors, the decrease of the lung metastatic nodules in tumor-bearing mice and the induction of immunological memory that provides continuous protection from the tumor rechallenge. The inhalable microspheres loaded with DAC and DOX could be an effective strategy for lung cancer treatment via the pyroptosis mechanism.
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Affiliation(s)
- Beibei Xie
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, 55 Daxuecheng South Road, Chongqing 401331, P. R. China.
| | - Tingting Liu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, 55 Daxuecheng South Road, Chongqing 401331, P. R. China.
| | - Shuang Chen
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, 55 Daxuecheng South Road, Chongqing 401331, P. R. China.
| | - Yan Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, 55 Daxuecheng South Road, Chongqing 401331, P. R. China.
| | - Dongxian He
- Innovation Research Institute of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250355, P. R. China.
- Chongqing Engineering Research Center of Pharmaceutical Sciences, Chongqing Medical and Pharmaceutical College, Chongqing 401331, P. R. China
| | - Qian Shao
- Chongqing Engineering Research Center of Pharmaceutical Sciences, Chongqing Medical and Pharmaceutical College, Chongqing 401331, P. R. China
| | - Zhen Zhang
- Innovation Research Institute of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250355, P. R. China.
| | - Chenhui Wang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, 55 Daxuecheng South Road, Chongqing 401331, P. R. China.
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502
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Qian X, Tang J, Chu Y, Chen Z, Chen L, Shen C, Li L. A Novel Pyroptosis-Related Gene Signature for Prognostic Prediction of Head and Neck Squamous Cell Carcinoma. Int J Gen Med 2021; 14:7669-7679. [PMID: 34764680 PMCID: PMC8575318 DOI: 10.2147/ijgm.s337089] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 10/20/2021] [Indexed: 12/01/2022] Open
Abstract
Background Head and neck squamous cell carcinoma (HNSCC) is an extremely heterogeneous malignant cancer with poor prognosis. Pyroptosis is defined as a novel inflammation-dependent programmed cell death. However, the pyroptosis-associated gene expression in HNSCC and their relationship with prognosis are still indistinct. Material and Methods We acquired the mRNA expression information of HNSCC patients from publicly available TCGA and GEO databases. We compared the tumor issues and adjacent normal tissues in terms of the gene expression for the purpose of identifying differentially expressed genes (DEGs). Based on these genes, we established a risk signature by the LASSO Cox regression in the TCGA cohort and validated the results in a GEO cohort. We also verified the levels of relevant mRNA expression in the model by RT-qPCR analysis. Eventually, functional enrichment approach was carried out to explore the potential mechanisms. Results Our team found a total of 18 differentially expressed genes (DEGs) between the HNSCC and healthy samples, and 4 DEGs displayed a remarkable association with the overall survival (OS) (P < 0.05). A 4-gene signature was constructed, presenting beneficial forecast power in both TCGA and GEO cohorts. Our team categorized patients into a group with high risk and another group with low risk as per the average risk value of the 4-gene feature. The individuals in the low risk group displayed a notably greater OS compared with the high risk one (P < 0.01). The Cox regression study demonstrated the independent forecast capability of the risk score. The receiver operating characteristic approach facilitated the verification of the forecast function of the gene signature. Posterior to verification, 4 genes were aberrantly expressed in the HNSCC and healthy samples. Functional study displayed that these groups presented diverse immunity conditions. Conclusion Pyroptosis-associated genes are pivotal for the prognosis of HNSCC and can serve as potential therapeutic targets.
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Affiliation(s)
- Xiaoyu Qian
- Department of Head and Neck Surgery, The First Hospital of Jiaxing, The Affiliated Hospital of Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
| | - Jian Tang
- Department of Head and Neck Surgery, The First Hospital of Jiaxing, The Affiliated Hospital of Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
| | - Yongquan Chu
- Department of Head and Neck Surgery, The First Hospital of Jiaxing, The Affiliated Hospital of Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
| | - Ziqiang Chen
- Department of Head and Neck Surgery, The First Hospital of Jiaxing, The Affiliated Hospital of Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
| | - Liang Chen
- Department of Head and Neck Surgery, The First Hospital of Jiaxing, The Affiliated Hospital of Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
| | - Chao Shen
- Department of Head and Neck Surgery, The First Hospital of Jiaxing, The Affiliated Hospital of Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
| | - Lin Li
- Department of Nuclear Medicine Clinic, The First Hospital of Jiaxing, The Affiliated Hospital of Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
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503
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A Novel Pyroptosis-Related lncRNAs Signature for Predicting the Prognosis of Kidney Renal Clear Cell Carcinoma and Its Associations with Immunity. JOURNAL OF ONCOLOGY 2021; 2021:9997185. [PMID: 34764994 PMCID: PMC8577956 DOI: 10.1155/2021/9997185] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 09/15/2021] [Accepted: 09/24/2021] [Indexed: 12/16/2022]
Abstract
The most common kind of kidney cancer with poor prognosis is clear cell renal cell carcinoma (ccRCC). Pyroptosis is shown to be an inflammatory type of programmed cell death in recent years. In this research, we utilized pyroptosis-related differentially expressed lncRNAs in ccRCC to develop a predictive multi-lncRNA signature. We uncovered 14 lncRNAs with different expression patterns that were linked to ccRCC prognosis. Kaplan–Meier analysis identified a signature of high-risk lncRNAs related to poor prognosis for ccRCC. Furthermore, the AUC of the lncRNA signature was 0.771, indicating that they can be used to predict ccRCC prognosis. In predicting ccRCC prognosis, our risk analysis approach outperformed standard clinicopathological characteristics. In the low-risk group, GSEA indicated tumor-related pathways. T-cell functions such as T-cell coinhibition and T-cell costimulation were found to be expressed differently in two groups. Immune checkpoints including PD-1, LAG3, CTLA4, and BTLA were also differently expressed between the two groups. In patients with ccRCC, we created a 14-lncRNA-based predictor as a robust prognostic and predictive tool for OS.
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504
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Ferroptosis as a Major Factor and Therapeutic Target for Neuroinflammation in Parkinson's Disease. Biomedicines 2021; 9:biomedicines9111679. [PMID: 34829907 PMCID: PMC8615560 DOI: 10.3390/biomedicines9111679] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 11/09/2021] [Accepted: 11/11/2021] [Indexed: 12/16/2022] Open
Abstract
Mounting evidence suggests that ferroptosis is not just a consequence but also a fundamental contributor to the development and progression of Parkinson’s disease (PD). Ferroptosis is characterized as iron-dependent regulated cell death caused by excessive lipid peroxidation, leading to plasma membrane rupture, release of damage-associated molecular patterns, and neuroinflammation. Due to the crucial role of intracellular iron in mediating the production of reactive oxygen species and the formation of lipid peroxides, ferroptosis is intimately controlled by regulators involved in many aspects of iron metabolism, including iron uptake, storage and export, and by pathways constituting the antioxidant systems. Translational and transcriptional regulation of iron homeostasis and redox status provide an integrated network to determine the sensitivity of ferroptosis. We herein review recent advances related to ferroptosis, ranging from fundamental mechanistic discoveries and cutting-edge preclinical animal studies, to clinical trials in PD and the regulation of neuroinflammation via ferroptosis pathways. Elucidating the roles of ferroptosis in the survival of dopaminergic neurons and microglial activity can enhance our understanding of the pathogenesis of PD and provide opportunities for the development of novel prevention and treatment strategies.
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505
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Yan B, Liu T, Yao C, Liu X, Du Q, Pan L. LncRNA XIST shuttled by adipose tissue-derived mesenchymal stem cell-derived extracellular vesicles suppresses myocardial pyroptosis in atrial fibrillation by disrupting miR-214-3p-mediated Arl2 inhibition. J Transl Med 2021; 101:1427-1438. [PMID: 34389797 DOI: 10.1038/s41374-021-00635-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 06/17/2021] [Accepted: 06/18/2021] [Indexed: 01/17/2023] Open
Abstract
The mechanisms underlying atrial fibrillation (AF), a type of heart arrhythmia, have not been fully identified. Long noncoding RNAs (lncRNAs) have been implicated in the progression of AF. The current study aimed to ascertain the means by which X-inactive specific transcript (XIST), a lncRNA, contributes to the pathogenesis of AF in an animal model or in atrial myocytes. Extracellular vesicles (EVs) derived from mouse adipose tissue-derived mesenchymal stem cells (AMSCs) were isolated, transfected with XIST, and either injected into AF mouse models or incubated with atrial myocytes. The in vitro and in vivo effects of EV-derived XIST on myocardial pyroptosis were determined by Western blot analysis of pyroptosis-related protein and an ELISA for inflammatory factors. Bioinformatics analysis revealed a relationship between XIST, microRNA (miR)-214-3p, and Arl2, which was subsequently verified by a dual luciferase assay and RNA immunoprecipitation. Functional experiments were performed to elucidate whether changes in miR-214-3p or Arl2 regulated the effect of XIST on myocardial pyroptosis. Overexpressed XIST from AMSC-EVs were found to decrease myocardial pyroptosis while alleviating inflammation, which was demonstrated by reduced expression of nucleotide-binding and oligomerization domain-like receptor family pyrin domain-containing 3 (NLRP3), apoptosis-associated speck-like protein containing a CARD (ASC), cleared-caspase-1/caspase-1 and gasdermin D (GSDMD), as well as the amount of interleukin (IL)-1β and IL-18 in both the cardiomyocytes and AF mouse tissues. Mechanistically, XIST is a competing endogenous RNA (ceRNA) of miR-214-3p, triggering upregulation of its target gene Arl2. Silencing of Arl2 or overexpression miR-214-3p reversed the effects of XIST on inflammation and pyroptosis. Taken together, the key findings of our study suggest that XIST may blunt myocardial pyroptosis by absorbing miR-214-3p to promote Arl2 expression, providing encouraging insight into XIST-based targeted therapy for AF.
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Affiliation(s)
- Boyu Yan
- Department of Cardiology, Pingxiang People's Hospital, Pingxiang, People's Republic of China
| | - Ting Liu
- Department of Pharmacy, Pingxiang People's Hospital, Pingxiang, People's Republic of China
| | - Chang Yao
- Department of Cardiology, Pingxiang People's Hospital, Pingxiang, People's Republic of China
| | - Xinglong Liu
- Department of Cardiology, Pingxiang People's Hospital, Pingxiang, People's Republic of China
| | - Qian Du
- Department of Cardiology, Pingxiang People's Hospital, Pingxiang, People's Republic of China
| | - Lihua Pan
- Department of Cardiology, Affiliated Hospital of Nantong University, Nantong, People's Republic of China.
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506
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Qiu S, Hu Y, Dong S. Pan-cancer analysis reveals the expression, genetic alteration and prognosis of pyroptosis key gene GSDMD. Int Immunopharmacol 2021; 101:108270. [PMID: 34700129 DOI: 10.1016/j.intimp.2021.108270] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 08/23/2021] [Accepted: 09/08/2021] [Indexed: 01/17/2023]
Abstract
BACKGROUND Gasdermins (GSDMs)-mediated pyroptosis is widely involved in activating anti-tumor immunity and suppressing tumor growth. However, whether gasdermin D (GSDMD)-mediated pyroptosis affects patient prognosis in pan-cancer remains unknown. METHODS We performed analyses of the RNA expression, genetic alteration, prognosis and immune infiltration of GSDMD in pan-cancer. In order to explore the relationship between pyroptosis and tumors, we calculated the correlation between GSDMD and pyroptosis key genes in pan-cancer. We also investigated the enrichment pathway of GSDMD-related genes. RESULTS GSDMD was differentially expressed in the vast majority of cancer, and could be used as a prognostic marker in adrenocortical carcinoma (ACC), kidney renal clear cell carcinoma (KIRC), brain lower grade glioma (LGG), liver hepatocellular carcinoma (LIHC), skin cutaneous melanoma (SKCM) and rectum adenocarcinoma (READ). Strong evidence indicated the significant correlation of GSDMD with almost all immune checkpoints and immune cells. Pyroptosis-related genes strongly associated with GSDMD in ACC, KIRC, LGG, LIHC and SKCM, suggesting that GSDMD-mediated pyroptosis might play a critical role in the five cancers. CONCLUSION All the evidence supported the potential role of GSDMD-mediated pyroptosis in cancer. Our results provided new insights into GSDMD as a prognostic marker and potential therapeutic target for cancer.
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Affiliation(s)
- Shizheng Qiu
- School of Computer Science and Technology, Harbin Institute of Technology, Harbin, China
| | - Yang Hu
- School of Computer Science and Technology, Harbin Institute of Technology, Harbin, China.
| | - Siqing Dong
- Beidahuang Industry Group General Hospital, Harbin, China
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507
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Spinal Tuina Improves Cognitive Impairment in Cerebral Palsy Rats through Inhibiting Pyroptosis Induced by NLRP3 and Caspase-1. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:1028909. [PMID: 34691200 PMCID: PMC8531800 DOI: 10.1155/2021/1028909] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 10/03/2021] [Accepted: 10/05/2021] [Indexed: 11/17/2022]
Abstract
Cerebral palsy (CP) is a severe cerebral disease with high mortality and morbidity, which leads to great challenges for the suffering children and their families. Hence, the need for the efficacious and safe treatments is urgent. As a physical therapy arising from traditional Chinese medicine (TCM), Tuina has shown multiple effects on various diseases, including cerebral palsy. Nevertheless, the detailed mechanisms of Tuina on CP remain unknown, which impedes its further clinical application. Herein, we explored the effects of Tuina on CP and its potential mechanisms. Thirty Sprague Dawley (SD) male rats were randomly divided into sham, model, and Tuina groups (model + Tuina). CP rat model was established by hypoxia-ischemia via permanent occlusion of left common carotid artery and hypoxia for 2.5 hours caused by anaerobic environment, which was subsequently followed by onset of Tuina treatment from postnatal day 7 (P7) to P49. After completion of Tuina treatment, the behavioral tests showed that Tuina treatment not only improved the retarded body weight and impaired motor balance function, but also ameliorated weakened learning and memory function of CP rats. Moreover, immunohistochemistry and western blot also revealed a reduced expression of NLRP3 inflammasome and corresponding pyroptosis-related molecules induced by NLRP3 in CP rats after Tuina treatment. Therefore, our study indicated that Tuina treatment may improve impaired neurocognitive function of CP rats, which was possibly realised via inhibiting NLRP3-induced pyroptosis.
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508
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Xie J, Li H, Chen L, Cao Y, Hu Y, Zhu Z, Wang M, Shi J. A Novel Pyroptosis-Related lncRNA Signature for Predicting the Prognosis of Skin Cutaneous Melanoma. Int J Gen Med 2021; 14:6517-6527. [PMID: 34675619 PMCID: PMC8518699 DOI: 10.2147/ijgm.s335396] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 09/29/2021] [Indexed: 12/22/2022] Open
Abstract
Purpose To construct a prognosis model of melanoma based on pyroptosis related genes. Methods Melanoma RNA-sequencing data was downloaded from TCGA. First, the lnRNAs related to pyroptosis were obtained through Pearson correlation analysis. Then, the prognosis model of pyroptosis related genes was constructed by Cox regression and Lasso regression. Melanoma patients were divided into high-risk and low-risk groups by risk score, and the differences in prognosis and immune microenvironment between the two groups were explored. Results We found that the high-risk group had a significantly poorer prognosis, and different groups differed in immune infiltration, m6A methylation, and immune checkpoint. Conclusion Our prognostic model can provide a reference for the study of pyroptosis in melanoma cells and provide a new idea for melanoma treatment.
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Affiliation(s)
- Jiaheng Xie
- Department of Burn and Plastic Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
| | - Haobo Li
- Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital; Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People's Republic of China
| | - Liang Chen
- Department of General Surgery, Fuyang Hospital Affiliated to Anhui Medical University, Fuyang, Anhui, People's Republic of China
| | - Yuan Cao
- Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
| | - Yiming Hu
- College of Pharmacy, Jiangsu Ocean University, Lianyungang, Jiangsu, People's Republic of China
| | - Zhechen Zhu
- Department of Burn and Plastic Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
| | - Ming Wang
- Department of Burn and Plastic Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
| | - Jingping Shi
- Department of Burn and Plastic Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
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509
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Li X, He J. A Novel Pyroptosis-Related Gene Signature for Early-Stage Lung Squamous Cell Carcinoma. Int J Gen Med 2021; 14:6439-6453. [PMID: 34675612 PMCID: PMC8502038 DOI: 10.2147/ijgm.s331975] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 09/28/2021] [Indexed: 12/24/2022] Open
Abstract
Background Diagnosis of early stage lung squamous cell carcinoma (LUSC) has improved; however, a comprehensive analysis of prognostic signatures is needed. Purpose To identify, establish, and validate a signature model based on pyroptosis-related genes for prognostic predictions of early stage LUSC. Patients and Methods Two independent cohorts were included. RNA-seq transcriptome data from patients with early stage LUSC were obtained from The Cancer Genome Atlas (TCGA) database. Thirty-three pyroptosis-related genes were analyzed between early stage LUSC and normal lung tissues. Cox regression analysis, random survival forest, and least absolute shrinkage and selection operator algorithms established a three-gene signature. Kaplan–Meier survival and receiver-operating characteristic curves assessed the prognostic efficacy of the model. Single-sample gene set enrichment analysis (ssGSEA) assessed the relationship between pyroptosis and immune cells. Patients with early stage LUSC from the GSE74777 dataset were used for validation. Pyroptosis-related genes were verified by RT-qPCR and Western blotting. Results Twenty-three differentially expressed pyroptosis-related genes were identified in the LUSC and adjacent normal tissues. Three differentially expressed pyroptosis-related genes were identified as hub genes in early stage LUSC. Patients with early stage LUSC in the TCGA cohort were classified into low- and high-risk subgroups according to the risk score. Overall survival (OS) was significantly short in the high-risk subgroup versus the low-risk subgroup. A similar result was found for the GSE74777 dataset. ssGSEA of immune cells and immune-related pathways between the low- and high-risk subgroups may explain the different OS for patients with early-stage LUSC. IL-6 expression was upregulated, which was inconsistent with the bioinformatic analysis. NOD1 and CASP4 were downregulated in LUSC (all P < 0.05) versus normal lung tissues. Conclusion Differentially expressed pyroptosis-related genes may be involved in early stage LUSC. Pyroptosis-related genes are important in tumor immunity and may be potential prognostic predictors for early stage LUSC.
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Affiliation(s)
- Xiaoyan Li
- Clinical Medical College of Chengdu Medical College, Chengdu, Sichuan, 610500, People's Republic of China.,Department of Endocrinology, The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan, 610500, People's Republic of China
| | - Jie He
- Clinical Medical College of Chengdu Medical College, Chengdu, Sichuan, 610500, People's Republic of China.,Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan, 610500, People's Republic of China
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510
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Song W, Ren J, Xiang R, Kong C, Fu T. Identification of pyroptosis-related subtypes, the development of a prognosis model, and characterization of tumor microenvironment infiltration in colorectal cancer. Oncoimmunology 2021; 10:1987636. [PMID: 34676149 PMCID: PMC8526024 DOI: 10.1080/2162402x.2021.1987636] [Citation(s) in RCA: 84] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Pyroptosis is a newly discovered programmed cell death that is associated with tumor progression, prognosis, and treatment response. However, the potential roles of pyroptosis-related genes (PRGs) in the tumor microenvironment (TME) remain unclear. We described the alterations of PRGs in 1109 colorectal cancer (CRC) samples from genetic and transcriptional fields and evaluated their expression patterns from four independent datasets. We identified two distinct molecular subtypes and found that multi-layer PRG alterations were correlated with patient clinicopathological features, prognosis, and TME cell-infiltrating characteristics. Then, a PRG_score for predicting recurrence-free survival (RFS) was constructed and its predictive capability in CRC patients was validated. Consequently, we constructed a highly accurate nomogram for improving the clinical applicability of the PRG_score. A low PRG_score, characterized by increased microsatellite instability-high (MSI-H), mutation burden, and immunity activation, indicated favorable odds of RFS. Moreover, the PRG_score was significantly associated with the cancer stem cell (CSC) index and chemotherapeutic drug sensitivity. Our comprehensive analysis of PRGs in CRC demonstrated their potential roles in the tumor-immune-stromal microenvironment, clinicopathological features, and prognosis. These findings may improve our understanding of PRGs in CRC and pave a new path for the assessment of prognosis and the development of more effective immunotherapy strategies.
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Affiliation(s)
- Wei Song
- Department of Gastrointestinal Surgery II, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Jun Ren
- Department of Gastrointestinal Surgery II, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Rensheng Xiang
- Department of Gastrointestinal Surgery II, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Can Kong
- Department of Gastrointestinal Surgery II, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
| | - Tao Fu
- Department of Gastrointestinal Surgery II, Renmin Hospital of Wuhan University, Wuhan, Hubei, China
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511
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Wu J, Zhu Y, Luo M, Li L. Comprehensive Analysis of Pyroptosis-Related Genes and Tumor Microenvironment Infiltration Characterization in Breast Cancer. Front Immunol 2021; 12:748221. [PMID: 34659246 PMCID: PMC8515898 DOI: 10.3389/fimmu.2021.748221] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 09/15/2021] [Indexed: 02/05/2023] Open
Abstract
Background Immunotherapy has emerged as a significant strategy to treat numerous tumors. The positive response to immunotherapy depends on the dynamic interaction between tumor cells and infiltrating lymphocytes in the tumor microenvironment (TME). Pyroptosis, inflammation-induced cell death, is intricately associated with several tumors. However, the relationship between pyroptosis and clinical prognosis, immune cell infiltration, and immunotherapy effect is unclear in breast cancer (BRCA). Methods We comprehensively evaluated 33 pyroptosis-related genes and systematically assessed the relationship between pyroptosis and tumor progression, prognosis, and immune cell infiltration. The PyroptosisScore was used to quantify the pyroptosis pattern of a single tumor patient. We then assessed their values for predicting prognoses and therapeutic responses in BRCA. Results Three different modes of PyroptosisClusters were determined. The characteristics of TME cell infiltration in these three PyroptosisClusters were highly consistent with three immunophenotypes of tumors, including immune-excluded, immune-inflamed, and immune-desert phenotypes. Comprehensive bioinformatics analysis revealed that patients with a low PyroptosisScore had higher immune checkpoint expression, higher immune checkpoint inhibitor (ICI) scores, increased immune microenvironment infiltration, and were more sensitive to immunotherapy than those with a high PyroptosisScore. Conclusions Our findings revealed the crucial role of pyroptosis in maintaining the diversity and complexity of TME. Pyroptosis is closely related to tumor progression, tumor prognosis, and immunotherapy response. Evaluating the PyroptosisScore of a single tumor can assist in understanding the characteristics of TME infiltration and lead to the development of more effective immunotherapy strategies.
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Affiliation(s)
- JianBin Wu
- Department of Breast, Fujian Maternity and Child Health Hospital, Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Yuanyuan Zhu
- The First School of Clinical Medicine (Dongzhimen Hospital) , Beijing University of Chinese Medicine, Beijing, China
| | - MingMin Luo
- Reproductive Medicine Center, Fujian Maternity and Child Health Hospital, Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Lei Li
- Department of Pathology, University of Otago, Dunedin, New Zealand
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512
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Antileukemic Natural Product Induced Both Apoptotic and Pyroptotic Programmed Cell Death and Differentiation Effect. Int J Mol Sci 2021; 22:ijms222011239. [PMID: 34681898 PMCID: PMC8538678 DOI: 10.3390/ijms222011239] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 10/13/2021] [Accepted: 10/14/2021] [Indexed: 01/07/2023] Open
Abstract
Acute myeloid leukemia (AML) is one of the most common forms of leukemia. Despite advances in the management of such malignancies and the progress of novel therapies, unmet medical needs still exist in AML because of several factors, including poor response to chemotherapy and high relapse rates. Ardisianone, a plant-derived natural component with an alkyl benzoquinone structure, induced apoptosis in leukemic HL-60 cells. The determination of dozens of apoptosis-related proteins showed that ardisianone upregulated death receptors and downregulated the inhibitor of apoptosis protein (IAPs). Western blotting showed that ardisianone induced a dramatic increase in tumor necrosis factor receptor 2 (TNFR2) protein expression. Ardisianone also induced downstream signaling by activating caspase-8 and -3 and degradation in Bid, a caspase-8 substrate. Furthermore, ardisianone induced degradation in DNA fragmentation factor 45 kDa (DFF45), a subunit of inhibitors of caspase-activated DNase (ICAD). Q-VD-OPh (a broad-spectrum caspase inhibitor) significantly diminished ardisianone-induced apoptosis, confirming the involvement of caspase-dependent apoptosis. Moreover, ardisianone induced pyroptosis. Using transmission electron microscopic examination and Western blot analysis, key markers including gasdermin D, high mobility group box1 (HMGB1), and caspase-1 and -5 were detected. Notably, ardisianone induced the differentiation of the remaining survival cells, which were characterized by an increase in the expression of CD11b and CD68, two markers of macrophages and monocytes. Wright–Giemsa staining also showed the differentiation of cells into monocyte and macrophage morphology. In conclusion, the data suggested that ardisianone induced the apoptosis and pyroptosis of leukemic cells through downregulation of IAPs and activation of caspase pathways that caused gasdermin D cleavage and DNA double-stranded breaks and ultimately led to programmed cell death. Ardisianone also induced the differentiation of leukemic cells into monocyte-like and macrophage-like cells. The data suggested the potential of ardisianone for further antileukemic development.
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513
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Zheng C, Tan Z. A novel identified pyroptosis-related prognostic signature of colorectal cancer. MATHEMATICAL BIOSCIENCES AND ENGINEERING : MBE 2021; 18:8783-8796. [PMID: 34814322 DOI: 10.3934/mbe.2021433] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Colorectal cancer (CRC), one of the most common malignancies worldwide, leads to abundant cancer-related mortalities annually. Pyroptosis, a new kind of programmed cell death, plays a critical role in immune response and tumor progression. Our study aimed to identify a prognostic signature for CRC based on pyroptosis-related genes (PRGs). The difference in PRGs between CRC tissues and normal tissues deposited in the TCGA database was calculated by "limma" R package. The tumor microenvironment (TME) of CRC cases was accessed by the ESTIMATE algorithm. The prognostic PRGs were identified using Cox regression analysis. A least absolute shrinkage and selector operation (LASSO) algorithm was used to calculate the risk scores and construct a clinical predictive model of CRC. Gene Set Enrichment Analysis (GSEA) was performed for understanding the function annotation of the signature in the tumor microenvironment. We found that most PRGs were significantly dysregulated in CRC. Through the LASSO method, three key PRGs were selected to calculate the risk scores and construct the prognostic model for CRC. The risk score was an independent indicator of patient's prognosis. In addition, we classified the CRC patients into two clusters based on risk scores and discovered that CRC patients in cluster 2 underwent worse overall survival and owned higher expression levels of immune checkpoint genes in tumor tissues. In conclusion, our study identified a PRG-related prognostic signature for CRC, according to which we classified the CRC patients into two clusters with distinct prognosis and immunotherapy potential.
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Affiliation(s)
- Chen Zheng
- First Department of General Surgery, Xi'an Central Hospital, Xi'an, Shaanxi Province, China
| | - Zhaobang Tan
- Department of digestive surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi Province, China
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514
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Identification of a Pyroptosis-Related Gene Signature for Prediction of Overall Survival in Lung Adenocarcinoma. JOURNAL OF ONCOLOGY 2021; 2021:6365459. [PMID: 34630565 PMCID: PMC8497135 DOI: 10.1155/2021/6365459] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Accepted: 09/13/2021] [Indexed: 12/25/2022]
Abstract
Pyroptosis is a kind of programmed cell death that is characterized by inflammation. However, the expression of pyroptosis-related genes and their connection with prognosis in lung adenocarcinoma (LUAD) remain unknown. The aim of this study is to create and validate a LUAD prediction signature based on genes associated with pyroptosis. The TCGA and GEO were used to collect gene sequencing data and clinical information for LUAD samples. To identify patients with LUAD from the TCGA cohort, consensus clustering by pyroptosis-related genes was employed. Our prognostic model was constructed using LASSO-Cox analysis after Cox regression using differentially expressed genes. To predict patient survival, we created a seven-mRNA signature. Additionally, reliability and validity were established in the GEO cohort. To assess its diagnostic and prognostic usefulness, an integrated bioinformatics method was used. Using a risk score with varying overall survival (OS) in two cohorts (all p < 0.001), a seven-gene signature was developed to categorize patients into two risk categories. The signature was shown to be an independent predictor of LUAD using multivariate regression analysis. The signature was linked to a variety of immune cell subtypes according to a study of immune cell infiltration. We constructed a signature consisting of seven genes as a robust biomarker with potential for clinical use in risk stratification and OS prediction in LUAD patients, as well as a potential indicator of immunotherapy in LUAD.
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515
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Wu P, Shi J, Sun W, Zhang H. Identification and validation of a pyroptosis-related prognostic signature for thyroid cancer. Cancer Cell Int 2021; 21:523. [PMID: 34627252 PMCID: PMC8502398 DOI: 10.1186/s12935-021-02231-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 09/26/2021] [Indexed: 12/15/2022] Open
Abstract
Background Pyroptosis is a form of programmed cell death triggered by inflammasomes. However, the roles of pyroptosis-related genes in thyroid cancer (THCA) remain still unclear. Objective This study aimed to construct a pyroptosis-related signature that could effectively predict THCA prognosis and survival. Methods A LASSO Cox regression analysis was performed to build a prognostic model based on the expression profile of each pyroptosis-related gene. The predictive value of the prognostic model was validated in the internal cohort. Results A pyroptosis-related signature consisting of four genes was constructed to predict THCA prognosis and all patients were classified into high- and low-risk groups. Patients with a high-risk score had a poorer overall survival (OS) than those in the low-risk group. The area under the curve (AUC) of the receiver operator characteristic (ROC) curves assessed and verified the predictive performance of this signature. Multivariate analysis showed the risk score was an independent prognostic factor. Tumor immune cell infiltration and immune status were significantly higher in low-risk groups, which indicated a better response to immune checkpoint inhibitors (ICIs). Of the four pyroptosis-related genes in the prognostic signature, qRT-PCR detected three of them with significantly differential expression in THCA tissues. Conclusion In summary, our pyroptosis-related risk signature may have an effective predictive and prognostic capability in THCA. Our results provide a potential foundation for future studies of the relationship between pyroptosis and the immunotherapy response. Supplementary Information The online version contains supplementary material available at 10.1186/s12935-021-02231-0.
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Affiliation(s)
- Pu Wu
- Department of Thyroid Surgery, The First Hospital of China Medical University, Shenyang, China
| | - Jinyuan Shi
- Department of Thyroid Surgery, The First Hospital of China Medical University, Shenyang, China
| | - Wei Sun
- Department of Thyroid Surgery, The First Hospital of China Medical University, Shenyang, China
| | - Hao Zhang
- Department of Thyroid Surgery, The First Hospital of China Medical University, Shenyang, China.
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516
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Ping L, Zhang K, Ou X, Qiu X, Xiao X. A Novel Pyroptosis-Associated Long Non-coding RNA Signature Predicts Prognosis and Tumor Immune Microenvironment of Patients With Breast Cancer. Front Cell Dev Biol 2021; 9:727183. [PMID: 34616734 PMCID: PMC8488148 DOI: 10.3389/fcell.2021.727183] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 08/23/2021] [Indexed: 11/29/2022] Open
Abstract
Background: Pyroptosis, a kind of programmed cell death characterized by the rupture of cell membranes and the release of inflammatory substances, plays an important role in the occurrence and development of cancer. However, few studies focus on the pyroptosis-associated long non-coding RNAs (lncRNAs) in breast cancer (BC). The prognostic value of pyroptosis-associated lncRNAs and their relationship with tumor microenvironment (TME) in BC remain unclear. The purpose of this study was to explore the prognostic role of pyroptosis-associated lncRNAs and their relationship with TME in BC. Methods: The transcriptome data and clinical data of female BC patients were downloaded from The Cancer Genome Atlas (TCGA) database. A total of 937 patients were randomly assigned to either training set or validation set. A pyroptosis-associated lncRNA signature was constructed in the training set and verified in the validation set. Functional analysis and immune microenvironment analysis related to pyroptosis-associated lncRNAs were performed. A nomogram based on the risk score and clinical characteristics was established. Results: A 9-pyroptosis-associated lncRNA signature was constructed to separate BC patients into two risk groups. High-risk patients had poorer prognosis than low-risk patients. The risk score was proven to be an independent prognostic factor by multivariate Cox regression analysis. Function analysis and immune microenvironment analysis showed that low-risk BC tended to be an immunologically “hot” tumor. A nomogram was constructed with risk score and clinical characteristics. Receiver operating characteristic curve (ROC) analysis demonstrated credible predictive power of the nomogram. The area under time-dependent ROC curve (AUC) reached 0.880 at 1 year, 0.804 at 3 years, and 0.769 at 5 years in the training set, and 0.799 at 1 year, 0.794 at 3 years, and 0.728 at 5 years in the validation set. Conclusion: We identified a novel pyroptosis-associated lncRNA signature that was an independent prognostic indicator for BC patients. Pyroptosis-associated lncRNAs had potential relationship with the immune microenvironment and might be therapeutic targets for BC patients.
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Affiliation(s)
- Liqin Ping
- State Key Laboratory of Oncology in South China, Department of Medical Oncology, Sun Yat-sen University Cancer Center, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Kaiming Zhang
- State Key Laboratory of Oncology in South China, Department of Breast Oncology, Sun Yat-sen University Cancer Center, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Xueqi Ou
- State Key Laboratory of Oncology in South China, Department of Breast Oncology, Sun Yat-sen University Cancer Center, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Xingsheng Qiu
- Department of Radiation Oncology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xiangsheng Xiao
- State Key Laboratory of Oncology in South China, Department of Breast Oncology, Sun Yat-sen University Cancer Center, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
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517
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Ye X, Liu X, Wei W, Yu H, Jin X, Yu J, Li C, Xu B, Guo X, Mao J. Volume-activated chloride channels contribute to lipopolysaccharide plus nigericin-induced pyroptosis in bone marrow-derived macrophages. Biochem Pharmacol 2021; 193:114791. [PMID: 34582774 DOI: 10.1016/j.bcp.2021.114791] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 09/17/2021] [Accepted: 09/24/2021] [Indexed: 01/15/2023]
Abstract
The representative morphological features of pyroptosis are excessive cell swelling and subsequent membrane rupture. However, the mechanism underlying the cell's inherent inability to regulate volume during the progression of pyroptosis is poorly understood. In the current study, we found that both volume-activated chloride currents (Icl, vol) and the regulatory volume decrease (RVD) were markedly decreased in bone marrow-derived macrophages (BMDMs) undergoing pyroptosis induced by lipopolysaccharides (LPS) and nigericin. The inhibition of ICl, vol and RVD by the chloride channel blockers, tamoxifen or DCPIB, led to the emergence of pyroptosis-like phenotypes such as activated-caspase-1, pyroptotic-body-like bubbles, and a fried-egg-like appearance. Moreover, the expression of the volume-activated chloride channel (VRAC) constituent protein Leucine-Rich Repeat-Containing 8A (LRRC8A) was significantly down-regulated in pyroptotic BMDMs treated with LPS and nigericin. The silencing of LRRC8A expression by small interfering RNA (si)-LRRC8A transfection not only reduced ICl, vol and RVD, but also caused BMDMs to show pyroptosis-like manifestations such as activated-caspase-1, membrane bubbles, and have a fried-egg-like appearance. These results reveal a new mechanism for the loss of volume regulation in the process of pyroptotic cell swelling and strongly suggest that a functional deficiency of VRAC/LRRC8A plays a key role in this disorder.
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Affiliation(s)
- Xiaomin Ye
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances and School of Life Sciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Xiaoyong Liu
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances and School of Life Sciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Wenjun Wei
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances and School of Life Sciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Huiping Yu
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances and School of Life Sciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Xiaobao Jin
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances and School of Life Sciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Jinwei Yu
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances and School of Life Sciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Chunmei Li
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances and School of Life Sciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Bin Xu
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances and School of Life Sciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Xinmin Guo
- Department of Ultrasound, Guangzhou Red Cross Hospital, Medical College, Jinan University, Guangzhou, Guangdong 510220, PR China.
| | - Jianwen Mao
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances and School of Life Sciences and Biopharmaceutics, Guangdong Pharmaceutical University, Guangzhou 510006, PR China.
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518
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Sun Z, Jing C, Guo X, Zhang M, Kong F, Wang Z, Jiang S, Wang H. Comprehensive Analysis of the Immune Infiltrates of Pyroptosis in Kidney Renal Clear Cell Carcinoma. Front Oncol 2021; 11:716854. [PMID: 34568046 PMCID: PMC8459616 DOI: 10.3389/fonc.2021.716854] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Accepted: 08/18/2021] [Indexed: 12/31/2022] Open
Abstract
Kidney renal clear cell carcinoma (KIRC) has long been identified as a highly immune-infiltrated tumor. However, the underlying role of pyroptosis in the tumor microenvironment (TME) of KIRC remains poorly described. Herein, we systematically analyzed the prognostic value, role in the TME, response to ICIs, and drug sensitivity of pyroptosis-related genes (PRGs) in KIRC patients based on The Cancer Genome Atlas (TCGA) database. Cluster 2, by consensus clustering for 24 PRGs, presented a poor prognosis, likely because malignancy-related hallmarks were remarkably enriched. Additionally, we constructed a prognostic prediction model that discriminated well between high- and low-risk patients and was further confirmed in external E-MTAB-1980 cohort and HSP cohort. By further analyzing the TME based on the risk model, higher immune cell infiltration and lower tumor purity were found in the high-risk group, which presented a poor prognosis. Patients with high risk scores also exhibited higher ICI expression, indicating that these patients may be more prone to profit from ICIs. The sensitivity to anticancer drugs that correlated with model-related genes was also identified. Collectively, the pyroptosis-related prognosis risk model may improve prognostic information and provide directions for current research investigations on immunotherapeutic strategies for KIRC patients.
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Affiliation(s)
- Zhuolun Sun
- Department of Urology, Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Changying Jing
- School of Medicine, Technical University of Munich, Munich, Germany
| | - Xudong Guo
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Mingxiao Zhang
- Department of Urology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Feng Kong
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Zhenqing Wang
- Department of Urology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Shaobo Jiang
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Hanbo Wang
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
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519
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Gao L, Li Q. Identification of Novel Pyroptosis-Related lncRNAs Associated with the Prognosis of Breast Cancer Through Interactive Analysis. Cancer Manag Res 2021; 13:7175-7186. [PMID: 34552353 PMCID: PMC8450763 DOI: 10.2147/cmar.s325710] [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: 06/20/2021] [Accepted: 08/12/2021] [Indexed: 01/14/2023] Open
Abstract
Background The role of pyroptosis and lncRNAs in breast cancer remains controversial. This study aimed to explore the pyroptosis-related lncRNAs in breast cancer. Methods All the data used for bioinformatics analysis were downloaded from The Cancer Genome Atlas database. Limma package was used to perform difference analysis, and distinguish mRNA and lncRNA. Survival package was used to conduct prognosis analysis. LASSO algorithm, univariate cox analysis and multivariate cox analysis were used to construct the prognosis model. P value <0.05 was regarded as statistically significant. Results Based on the seven pyroptosis-related lncRNAs tightly associated with patients' prognosis, a prognostic prediction model was finally developed, which showed powerful effectiveness (Training cohort, one-year AUC = 0.82, 95% Cl = 0.69-0.95, three-year AUC = 0.77, 95% Cl = 0.68-0.85, five-year AUC = 0.74, 95% Cl = 0.66-0.82; Validation cohort, one-year AUC = 0.68, 95% Cl = 0.53-0.84, three-year AUC = 0.72, 95% Cl = 0.64-0.81, five-year AUC = 0.67, 95% Cl = 0.57-0.77). GSEA analysis demonstrated that the protein secretion, angiogenesis, TGF-β signaling and MTORC1 signaling might be involved in the high-risk patients. Moreover, immune infiltration analysis showed that the risk score was positively correlated with Tgd and Th2 cells, yet negatively correlated with CD8+ T cells, cytotoxic cells and T helper cells, which might partly explain the poor prognosis of high-risk patients. Finally, the expression level of seven model lncRNAs in the real world was validated by qRT-PCR using four cancer cell lines (MCF-7, T47D, MDA-MB-231, MDA-MB-469). Conclusion In conclusion, our study identified lncRNAs that are remarkably correlated with patients' survival and might participate in the pyroptosis process, which might be underlying tumor biomarker and therapeutic targets. This study may provide direction for future research.
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Affiliation(s)
- Lili Gao
- Department of Pathology, Pudong New Area People's Hospital, Shanghai, People's Republic of China
| | - Qing Li
- Department of Pathology, Pudong New Area People's Hospital, Shanghai, People's Republic of China
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520
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Lin HY, Ho HW, Chang YH, Wei CJ, Chu PY. The Evolving Role of Ferroptosis in Breast Cancer: Translational Implications Present and Future. Cancers (Basel) 2021; 13:cancers13184576. [PMID: 34572802 PMCID: PMC8466180 DOI: 10.3390/cancers13184576] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/10/2021] [Accepted: 09/10/2021] [Indexed: 01/03/2023] Open
Abstract
Breast cancer (BC) is the most common malignancy among women worldwide. The discovery of regulated cell death processes has enabled advances in the treatment of BC. In the past decade, ferroptosis, a new form of iron-dependent regulated cell death caused by excessive lipid peroxidation has been implicated in the development and therapeutic responses of BC. Intriguingly, the induction of ferroptosis acts to suppress conventional therapy-resistant cells, and to potentiate the effects of immunotherapy. As such, pharmacological or genetic modulation targeting ferroptosis holds great potential for the treatment of drug-resistant cancers. In this review, we present a critical analysis of the current understanding of the molecular mechanisms and regulatory networks involved in ferroptosis, the potential physiological functions of ferroptosis in tumor suppression, its potential in therapeutic targeting, and explore recent advances in the development of therapeutic strategies for BC.
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Affiliation(s)
- Hung-Yu Lin
- Graduate Institute of Biomedical Engineering, National Chung Hsing University, Taichung 402, Taiwan;
- Research Assistant Center, Show Chwan Memorial Hospital, Changhua 500, Taiwan;
| | - Hui-Wen Ho
- Research Assistant Center, Show Chwan Memorial Hospital, Changhua 500, Taiwan;
| | - Yen-Hsiang Chang
- Department of Nuclear Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 833, Taiwan;
- Center for Mitochondrial Research and Medicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan
| | - Chun-Jui Wei
- Department of Pathology, Show Chwan Memorial Hospital, Changhua 500, Taiwan
- Correspondence: (C.-J.W.); (P.-Y.C.); Tel.: +886-97-5611-855 (P.-Y.C.)
| | - Pei-Yi Chu
- Graduate Institute of Biomedical Engineering, National Chung Hsing University, Taichung 402, Taiwan;
- Department of Pathology, Show Chwan Memorial Hospital, Changhua 500, Taiwan
- School of Medicine, College of Medicine, Fu Jen Catholic University, New Taipei City 242, Taiwan
- Department of Health Food, Chung Chou University of Science and Technology, Changhua 510, Taiwan
- National Institute of Cancer Research, National Health Research Institutes, Tainan 704, Taiwan
- Correspondence: (C.-J.W.); (P.-Y.C.); Tel.: +886-97-5611-855 (P.-Y.C.)
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521
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Song J, Sun Y, Cao H, Liu Z, Xi L, Dong C, Yang R, Shi Y. A novel pyroptosis-related lncRNA signature for prognostic prediction in patients with lung adenocarcinoma. Bioengineered 2021; 12:5932-5949. [PMID: 34488540 PMCID: PMC8806662 DOI: 10.1080/21655979.2021.1972078] [Citation(s) in RCA: 66] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Lung adenocarcinoma (LUAD) has been the major cause of tumor-associated mortality in recent years and has a poor prognosis. Pyroptosis is regulated via the activation of inflammasomes and participates in tumorigenesis. However, the effects of pyroptosis-related lncRNAs (PRlncRNAs) on LUAD have not yet been completely elucidated. Therefore, we attempted to systematically explore patterns of cell pyroptosis to establish a novel signature for predicting LUAD survival. Based on TCGA database, we set up a prognostic model by incorporating PRlncRNAs with differential expression using Cox regression and LASSO regression. Kaplan-Meier analysis was conducted to compare the survival of LUAD patients. We further simplified the risk model and created a nomogram to enhance the prediction of LUAD prognosis. Altogether, 84 PRlncRNAs with differential expression were discovered. Subsequently, a new risk model was constructed based on five PRlncRNAs, GSEC, FAM83A-AS1, AL606489.1, AL034397.3 and AC010980.2. The proposed signature exhibited good performance in prognostic prediction and was related to immunocyte infiltration. The nomogram exactly forecasted the overall survival of patients and had excellent clinical utility. In the present study, the five-lncRNA prognostic risk signature and nomogram are trustworthy and effective indicators for predicting the prognosis of LUAD.
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Affiliation(s)
- Jiahang Song
- Department of Thoracic Surgery, Nanjing Chest Hospital, Nanjing, Jiangsu, China.,Department of Radiation Oncology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yuanyuan Sun
- Department of Radiation Oncology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Hui Cao
- Department of Thoracic Surgery, Nanjing Chest Hospital, Nanjing, Jiangsu, China.,Department of Thoracic Surgery, The Affiliated Nanjing Brain Hospital of Nanjing Medical University, Nanjing, Jiangsu, China.,Department of Thoracic Surgery, Nanjing Chest Hospital, The Affiliated Nanjing Brain hospital of Nanjing Medical University, and The Pulmonary Nodule Diagnosis and Treatment Research Center of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Zhengcheng Liu
- Department of Thoracic Surgery, Nanjing Chest Hospital, Nanjing, Jiangsu, China.,Department of Thoracic Surgery, The Affiliated Nanjing Brain Hospital of Nanjing Medical University, Nanjing, Jiangsu, China.,Department of Thoracic Surgery, Nanjing Chest Hospital, The Affiliated Nanjing Brain hospital of Nanjing Medical University, and The Pulmonary Nodule Diagnosis and Treatment Research Center of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Lei Xi
- Department of Thoracic Surgery, Nanjing Chest Hospital, Nanjing, Jiangsu, China.,Department of Thoracic Surgery, The Affiliated Nanjing Brain Hospital of Nanjing Medical University, Nanjing, Jiangsu, China.,Department of Thoracic Surgery, Nanjing Chest Hospital, The Affiliated Nanjing Brain hospital of Nanjing Medical University, and The Pulmonary Nodule Diagnosis and Treatment Research Center of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Changqing Dong
- Department of Thoracic Surgery, Nanjing Chest Hospital, Nanjing, Jiangsu, China.,Department of Thoracic Surgery, The Affiliated Nanjing Brain Hospital of Nanjing Medical University, Nanjing, Jiangsu, China.,Department of Thoracic Surgery, Nanjing Chest Hospital, The Affiliated Nanjing Brain hospital of Nanjing Medical University, and The Pulmonary Nodule Diagnosis and Treatment Research Center of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Rusong Yang
- Department of Thoracic Surgery, Nanjing Chest Hospital, Nanjing, Jiangsu, China.,Department of Thoracic Surgery, The Affiliated Nanjing Brain Hospital of Nanjing Medical University, Nanjing, Jiangsu, China.,Department of Thoracic Surgery, Nanjing Chest Hospital, The Affiliated Nanjing Brain hospital of Nanjing Medical University, and The Pulmonary Nodule Diagnosis and Treatment Research Center of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Ye Shi
- Department of Thoracic Surgery, Nanjing Chest Hospital, Nanjing, Jiangsu, China.,Department of Thoracic Surgery, The Affiliated Nanjing Brain Hospital of Nanjing Medical University, Nanjing, Jiangsu, China.,Department of Thoracic Surgery, Nanjing Chest Hospital, The Affiliated Nanjing Brain hospital of Nanjing Medical University, and The Pulmonary Nodule Diagnosis and Treatment Research Center of Nanjing Medical University, Nanjing, Jiangsu, China
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522
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Banerjee S, Huang Z, Wang Z, Nakashima A, Saito S, Sharma S, Cheng S. Etiological Value of Sterile Inflammation in Preeclampsia: Is It a Non-Infectious Pregnancy Complication? Front Cell Infect Microbiol 2021; 11:694298. [PMID: 34485175 PMCID: PMC8415471 DOI: 10.3389/fcimb.2021.694298] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 07/30/2021] [Indexed: 12/25/2022] Open
Abstract
Understanding of sterile inflammation and its associated biological triggers and diseases is still at the elementary stage. This becomes more warranted in cases where infections are not associated with the pathology. Detrimental effects of bacterial and viral infections on the immune responses at the maternal-fetal interface as well as pregnancy outcomes have been well documented. However, an infection-induced etiology is not thought to be a major contributing component to severe pregnancy complications such as preeclampsia (PE) and gestational diabetes. How is then an inflammatory signal thought to be associated with these pregnancy complications? It is not clear what type of inflammation is involved in the onset of PE-like features. We opine that sterile inflammation regulated by the inflammasome-gasdermins-caspase-1 axis is a contributory factor to the onset of PE. We hypothesize that increased production and release of damage-associated molecular patterns (DAMPs) or Alarmins such as high-mobility group box1 (HMGB1), cell-free fetal DNA, uric acid, the NOD-like receptor pyrin-containing receptor 3 (NLRP3) inflammasome, IL-1β and IL-18 occur in the PE placenta. Some of these molecules have already been observed in the placenta from women with PE. Mechanistically, emerging evidence has demonstrated that excessive placental endoplasmic reticulum (ER) stress, impaired autophagy and gasdermine D (GSDMD)-mediated intrinsic pyroptosis are key events that contribute to systemic sterile inflammation in patients with PE, especially early-onset PE (e-PE). In this review, we highlight the advances on the roles of sterile inflammation and inflammatory signaling cascades involving ER stress, autophagy deficiency and pyroptosis in PE pathophysiology. Deciphering the mechanisms underlying these inflammatory pathways may provide potential diagnostic biomarkers and facilitate the development of therapeutic strategies to treat this devastating disease.
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Affiliation(s)
- Sayani Banerjee
- Department of Pediatrics, Women and Infants Hospital-Warren Alpert Medical School of Brown University, Providence, RI, United States
| | - Zheping Huang
- Department of Pediatrics, Women and Infants Hospital-Warren Alpert Medical School of Brown University, Providence, RI, United States
| | - Zhengke Wang
- Department of Pediatrics, Women and Infants Hospital-Warren Alpert Medical School of Brown University, Providence, RI, United States
| | - Akitoshi Nakashima
- Department of Obstetrics and Gynecology, University of Toyama, Toyama, Japan
| | - Shigeru Saito
- Department of Obstetrics and Gynecology, University of Toyama, Toyama, Japan
| | - Surendra Sharma
- Department of Pediatrics, Women and Infants Hospital-Warren Alpert Medical School of Brown University, Providence, RI, United States
| | - Shibin Cheng
- Department of Pediatrics, Women and Infants Hospital-Warren Alpert Medical School of Brown University, Providence, RI, United States
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Li H, Dong J, Cai M, Xu Z, Cheng XD, Qin JJ. Protein degradation technology: a strategic paradigm shift in drug discovery. J Hematol Oncol 2021; 14:138. [PMID: 34488823 PMCID: PMC8419833 DOI: 10.1186/s13045-021-01146-7] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 08/24/2021] [Indexed: 01/10/2023] Open
Abstract
Targeting pathogenic proteins with small-molecule inhibitors (SMIs) has become a widely used strategy for treating malignant tumors. However, most intracellular proteins have been proven to be undruggable due to a lack of active sites, leading to a significant challenge in the design and development of SMIs. In recent years, the proteolysis-targeting chimeric technology and related emerging degradation technologies have provided additional approaches for targeting these undruggable proteins. These degradation technologies show a tendency of superiority over SMIs, including the rapid and continuous target consumption as well as the stronger pharmacological effects, being a hot topic in current research. This review mainly focuses on summarizing the development of protein degradation technologies in recent years. Their advantages, potential applications, and limitations are also discussed. We hope this review would shed light on the design, discovery, and clinical application of drugs associated with these degradation technologies.
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Affiliation(s)
- Haobin Li
- Zhejiang Provincial Research Center for Upper Gastrointestinal Tract Cancer, The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Hangzhou, 310022 Zhejiang China
- Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, 310018 Zhejiang China
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053 China
| | - Jinyun Dong
- Zhejiang Provincial Research Center for Upper Gastrointestinal Tract Cancer, The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Hangzhou, 310022 Zhejiang China
- Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, 310018 Zhejiang China
| | - Maohua Cai
- Zhejiang Provincial Research Center for Upper Gastrointestinal Tract Cancer, The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Hangzhou, 310022 Zhejiang China
- Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, 310018 Zhejiang China
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053 China
| | - Zhiyuan Xu
- Zhejiang Provincial Research Center for Upper Gastrointestinal Tract Cancer, The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Hangzhou, 310022 Zhejiang China
- Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, 310018 Zhejiang China
| | - Xiang-Dong Cheng
- Zhejiang Provincial Research Center for Upper Gastrointestinal Tract Cancer, The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Hangzhou, 310022 Zhejiang China
- Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, 310018 Zhejiang China
| | - Jiang-Jiang Qin
- Zhejiang Provincial Research Center for Upper Gastrointestinal Tract Cancer, The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Hangzhou, 310022 Zhejiang China
- Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, 310018 Zhejiang China
- School of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053 China
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Wang YY, Shi LY, Xu MH, Jing Y, Sun CC, Yang JH, Wang RN, Sheng NN, Zhang CF, Zhang L, Zhu ZT, Wang QJ. A pan-cancer analysis of the expression of gasdermin genes in tumors and their relationship with the immune microenvironment. Transl Cancer Res 2021; 10:4125-4147. [PMID: 35116710 PMCID: PMC8797575 DOI: 10.21037/tcr-21-1635] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 09/14/2021] [Indexed: 12/11/2022]
Abstract
BACKGROUND Gasdermins (GSDMs) are a class of proteins related to pyrolysis and in humans, consist of GSDMA, GSDMB, GSDMC, GSDMD, DFNA5, and DFNB59. The inflammatory factors and cell contents released during pyrolysis can recruit immune cells and change the microenvironment. However, to date, there is a paucity of studies examining the relationship between GSDMs and the immune microenvironment in tumors. Therefore, this current report analyzed the expression of GSDM genes in tumors and their relationship with the immune microenvironment. METHODS Apply GSCALite and GEPIA2 online analysis tools to analyze the gene expression levels and the Single nucleotide variant (SNV), copy number variation (CNV), and methylation characteristics of GSDM genes respectively. Use R software or TISIDB online analysis tool to carry out the correlation analysis required in the article. Furthermore, Gene Ontology (GO) enrichment and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses were conducted to examine the role of these GSDM genes in various cancers. RESULTS The results demonstrated that CNV can cause an increase in GSDM gene expression, and methylation can inhibit GSDM gene expression. The elevated expression of GSDMA, GSDMB, GSDMC, GSDMD, and DFNA5 in some or most tumors was often accompanied by elevated immune scores, increased immune cell infiltration, and high expression of major histocompatibility complex (MHC) molecules, chemokines and their receptors, and immune checkpoint-related genes. However, DFNB59 was often negatively correlated with these indicators in tumors. GSDMD was the most highly expressed GSDM protein in various normal tissues and tumors, and showed the strongest correlation with immune microenvironment-related genes. Moreover, the methylation of GSDMD was accompanied by low immune cell infiltration, low expression of MHC molecule-related genes, low expression of chemokines and receptor-related genes, and low expression of immune checkpoint-related genes. CONCLUSIONS Therefore, the expression of GSDM-related genes is associated with the tumor immune microenvironment. The GSDM genes, especially GSDMD, may be used as therapeutic targets to predict or change the tumor microenvironment and as biomarkers to predict the therapeutic efficacy of immune checkpoint inhibitors.
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Affiliation(s)
- Yuan-Yuan Wang
- Department of Clinical Trial, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Lin-Yang Shi
- Department of Oncology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Ming-Hao Xu
- Department of Clinical Trial, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Yu Jing
- Department of Clinical Trial, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Cui-Cui Sun
- Department of Clinical Trial, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Jia-Hui Yang
- Department of Oncology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Ruo-Nan Wang
- Department of Oncology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Ning-Ning Sheng
- Department of Oncology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Ca-Fa Zhang
- Department of Oncology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Li Zhang
- Department of Clinical Trial, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Zhi-Tu Zhu
- Department of Clinical Trial, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Qing-Jun Wang
- Department of Clinical Trial, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
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Burdette BE, Esparza AN, Zhu H, Wang S. Gasdermin D in pyroptosis. Acta Pharm Sin B 2021; 11:2768-2782. [PMID: 34589396 PMCID: PMC8463274 DOI: 10.1016/j.apsb.2021.02.006] [Citation(s) in RCA: 292] [Impact Index Per Article: 97.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 11/29/2020] [Accepted: 12/01/2020] [Indexed: 02/07/2023] Open
Abstract
Pyroptosis is the process of inflammatory cell death. The primary function of pyroptosis is to induce strong inflammatory responses that defend the host against microbe infection. Excessive pyroptosis, however, leads to several inflammatory diseases, including sepsis and autoimmune disorders. Pyroptosis can be canonical or noncanonical. Upon microbe infection, the canonical pathway responds to pathogen-associated molecular patterns (PAMPs) and damage-associated molecular patterns (DAMPs), while the noncanonical pathway responds to intracellular lipopolysaccharides (LPS) of Gram-negative bacteria. The last step of pyroptosis requires the cleavage of gasdermin D (GsdmD) at D275 (numbering after human GSDMD) into N- and C-termini by caspase 1 in the canonical pathway and caspase 4/5/11 (caspase 4/5 in humans, caspase 11 in mice) in the noncanonical pathway. Upon cleavage, the N-terminus of GsdmD (GsdmD-N) forms a transmembrane pore that releases cytokines such as IL-1β and IL-18 and disturbs the regulation of ions and water, eventually resulting in strong inflammation and cell death. Since GsdmD is the effector of pyroptosis, promising inhibitors of GsdmD have been developed for inflammatory diseases. This review will focus on the roles of GsdmD during pyroptosis and in diseases.
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Key Words
- 7DG, 7-desacetoxy-6,7-dehydrogedunin
- ADRA2B, α-2B adrenergic receptor
- AIM, absent in melanoma
- ASC, associated speck-like protein
- Ac-FLTD-CMK, acetyl-FLTD-chloromethylketone
- BMDM, bone marrow-derived macrophages
- CARD, caspase activation
- CD, Crohn’s disease
- CTM, Chinese traditional medicine
- CTSG, cathepsin G
- Caspase
- DAMP, damage-associated molecular pattern
- DFNA5, deafness autosomal dominant 5
- DFNB59, deafness autosomal recessive type 59
- DKD, diabetic kidney disease
- DMF, dimethyl fumarate
- Damage-associated molecular patterns (DAMPs)
- ELANE, neutrophil expressed elastase
- ESCRT, endosomal sorting complexes required for transport
- FADD, FAS-associated death domain
- FDA, U.S. Food and Drug Administration
- FIIND, function to find domain
- FMF, familial Mediterranean fever
- GI, gastrointestinal
- GPX, glutathione peroxidase
- Gasdermin
- GsdmA/B/C/D/E, gasdermin A/B/C/D/E
- HAMP, homeostasis altering molecular pattern
- HIN, hematopoietic expression, interferon-inducible nature, and nuclear localization
- HIV, human immunodeficiency virus
- HMGB1, high mobility group protein B1
- IBD, inflammatory bowel disease
- IFN, interferon
- ITPR1, inositol 1,4,5-trisphosphate receptor type 1
- Inflammasome
- Inflammation
- LPS, lipopolysaccharide
- LRR, leucine-rich repeat
- MAP3K7, mitogen-activated protein kinase kinase kinase 7
- MCC950, N-[[(1,2,3,5,6,7-hexahydro-s-indacen-4-yl)amino]carbonyl]-4-(1-hydroxy-1-methylethyl)-2-furansulfonamide
- NAIP, NLR family apoptosis inhibitory protein
- NBD, nucleotide-binding domain
- NEK7, NIMA-related kinase 7
- NET, neutrophil extracellular trap
- NIK, NF-κB inducing kinase
- NLR, NOD-like receptor
- NLRP, NLR family pyrin domain containing
- NSAID, non-steroidal anti-inflammatory drug
- NSCLC, non-small cell lung cancer
- NSP, neutrophil specific serine protease
- PAMP, pathogen-associated molecular pattern
- PKA, protein kinase A
- PKN1/2, protein kinase1/2
- PKR, protein kinase-R
- PRR, pattern recognition receptors
- PYD, pyrin domain
- Pathogen-associated molecular patterns (PAMPs)
- Pyroptosis
- ROS, reactive oxygen species
- STING, stimulator of interferon genes
- Sepsis
- TLR, Toll-like receptor
- UC, ulcerative colitis
- cAMP, cyclic adenosine monophosphate
- cGAS, cyclic GMP–AMP synthase
- mtDNA, mitochondrial DNA
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Affiliation(s)
- Brandon E. Burdette
- Biology Department, University of Arkansas at Little Rock, Little Rock, AR 72204, USA
| | - Ashley N. Esparza
- Biology Department, University of Arkansas at Little Rock, Little Rock, AR 72204, USA
| | - Hua Zhu
- Department of Surgery, the Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
| | - Shanzhi Wang
- Biology Department, University of Arkansas at Little Rock, Little Rock, AR 72204, USA
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Loveless R, Bloomquist R, Teng Y. Pyroptosis at the forefront of anticancer immunity. J Exp Clin Cancer Res 2021; 40:264. [PMID: 34429144 PMCID: PMC8383365 DOI: 10.1186/s13046-021-02065-8] [Citation(s) in RCA: 135] [Impact Index Per Article: 45.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 08/07/2021] [Indexed: 02/07/2023] Open
Abstract
Tumor resistance to apoptosis and the immunosuppressive tumor microenvironment are two major contributors to poor therapeutic responses during cancer intervention. Pyroptosis, a lytic and inflammatory programmed cell death pathway distinct from apoptosis, has subsequently sparked notable interest among cancer researchers for its potential to be clinically harnessed and to address these problems. Recent evidence indicates that pyroptosis induction in tumor cells leads to a robust inflammatory response and marked tumor regression. Underlying its antitumor effect, pyroptosis is mediated by pore-forming gasdermin proteins that facilitate immune cell activation and infiltration through their release of pro-inflammatory cytokines and immunogenic material following cell rupture. Considering its inflammatory nature, however, aberrant pyroptosis may also be implicated in the formation of a tumor supportive microenvironment, as evidenced by the upregulation of gasdermin proteins in certain cancers. In this review, the molecular pathways leading to pyroptosis are introduced, followed by an overview of the seemingly entangled links between pyroptosis and cancer. We describe what is known regarding the impact of pyroptosis on anticancer immunity and give insight into the potential of harnessing pyroptosis as a tool and applying it to novel or existing anticancer strategies.
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Affiliation(s)
- Reid Loveless
- Department of Oral Biology and Diagnostic Sciences, Dental College of Georgia, Augusta University, Augusta, GA, 30912, USA
| | - Ryan Bloomquist
- Department of Restorative Sciences, Dental College of Georgia, Augusta University, Augusta, GA, 30912, USA
| | - Yong Teng
- Department of Hematology and Medical Oncology, Winship Cancer Institute, Emory University, 201 Dowman Dr, Atlanta, GA, 30322, USA.
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Zhang C, Hu Z, Hu R, Pi S, Wei Z, Wang C, Yang F, Xing C, Nie G, Hu G. New insights into crosstalk between pyroptosis and autophagy co-induced by molybdenum and cadmium in duck renal tubular epithelial cells. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:126138. [PMID: 34492927 DOI: 10.1016/j.jhazmat.2021.126138] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 04/30/2021] [Accepted: 05/13/2021] [Indexed: 06/13/2023]
Abstract
Pyroptosis and autophagy are two different biological processes that determine cell fates. Our previous studies revealed that pyroptosis and autophagy were involved in cytotoxicity co-induced by molybdenum (Mo) and cadmium (Cd) in duck renal tubular epithelial cells, but crosstalk between them is unclear. Hence, the cells were treated with 500.0 μM Mo, 4.0 μM Cd, 10.0 μM Z-YVAD-fluoromethylketone (YVAD), 2.5 μM 3-methyladenine (3-MA) and 10.0 μM chloroquine (CQ) alone or in combination for 12 h (CQ for the last 4 h). Under Mo and Cd co-stress, data evidenced that YVAD addition decreased the number of autophagosomes, LC3 puncta, and AMPKα-1, Atg5, Beclin-1, LC3A, LC3B mRNA levels and LC3-II/LC3-I, Beclin-1 protein levels, and increased p62 expression levels. Besides, both 3-MA and CQ addition increased NLRP3, Caspase-1, NEK7, ASC, GSDMA, GSDME, IL-1β, IL-18 mRNA levels, NLRP3, Caspase-1 p20, ASC, GSDMD protein and ROS levels, and NO, LDH, IL-1β, IL-18 releases. Collectively, our results revealed that pyroptosis and autophagy co-induced by Mo and Cd were interrelated in duck renal tubular epithelial cells, and inhibiting pyroptosis might attenuate Mo and Cd co-induced autophagy, but inhibiting autophagy might promote Mo and Cd co-induced pyroptosis.
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Affiliation(s)
- Caiying Zhang
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang 330045, Jiangxi, PR China
| | - Zhisheng Hu
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang 330045, Jiangxi, PR China
| | - Ruiming Hu
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang 330045, Jiangxi, PR China
| | - Shaoxing Pi
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang 330045, Jiangxi, PR China
| | - Zejing Wei
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang 330045, Jiangxi, PR China
| | - Chang Wang
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang 330045, Jiangxi, PR China
| | - Fan Yang
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang 330045, Jiangxi, PR China
| | - Chenghong Xing
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang 330045, Jiangxi, PR China
| | - Gaohui Nie
- School of Information Technology,Jiangxi University of Finance and Economics, No. 665 Yuping West street, Economic and Technological Development District, Nanchang 330032, Jiangxi, PR China.
| | - Guoliang Hu
- Jiangxi Provincial Key Laboratory for Animal Health, Institute of Animal Population Health, College of Animal Science and Technology, Jiangxi Agricultural University, No. 1101 Zhimin Avenue, Economic and Technological Development District, Nanchang 330045, Jiangxi, PR China.
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Du T, Gao J, Li P, Wang Y, Qi Q, Liu X, Li J, Wang C, Du L. Pyroptosis, metabolism, and tumor immune microenvironment. Clin Transl Med 2021; 11:e492. [PMID: 34459122 PMCID: PMC8329701 DOI: 10.1002/ctm2.492] [Citation(s) in RCA: 126] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 06/17/2021] [Accepted: 06/21/2021] [Indexed: 12/12/2022] Open
Abstract
In response to a wide range of stimulations, host cells activate pyroptosis, a kind of inflammatory cell death which is provoked by the cytosolic sensing of danger signals and pathogen infection. In manipulating the cleavage of gasdermins (GSDMs), researchers have found that GSDM proteins serve as the real executors and the deterministic players in fate decisions of pyroptotic cells. Whether inflammatory characteristics induced by pyroptosis could cause damage the host or improve immune activity is largely dependent on the context, timing, and response degree. Here, we systematically review current points involved in regulatory mechanisms and the multidimensional roles of pyroptosis in several metabolic diseases and the tumor microenvironment. Targeting pyroptosis may reveal potential therapeutic avenues.
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Affiliation(s)
- Tiantian Du
- Department of Clinical LaboratoryThe Second HospitalCheeloo College of MedicineShandong UniversityJinanShandongChina
| | - Jie Gao
- Department of Clinical LaboratoryThe Second HospitalCheeloo College of MedicineShandong UniversityJinanShandongChina
| | - Peilong Li
- Department of Clinical LaboratoryThe Second HospitalCheeloo College of MedicineShandong UniversityJinanShandongChina
| | - Yunshan Wang
- Department of Clinical LaboratoryThe Second HospitalCheeloo College of MedicineShandong UniversityJinanShandongChina
| | - Qiuchen Qi
- Department of Clinical LaboratoryThe Second HospitalCheeloo College of MedicineShandong UniversityJinanShandongChina
| | - Xiaoyan Liu
- Department of Clinical LaboratoryThe Second HospitalCheeloo College of MedicineShandong UniversityJinanShandongChina
| | - Juan Li
- Department of Clinical LaboratoryThe Second HospitalCheeloo College of MedicineShandong UniversityJinanShandongChina
| | - Chuanxin Wang
- Department of Clinical LaboratoryThe Second HospitalCheeloo College of MedicineShandong UniversityJinanShandongChina
- Shandong Engineering and Technology Research Center for Tumor Marker DetectionJinanShandongChina
- Shandong Provincial Clinical Medicine Research Center for Clinical LaboratoryJinanShandongChina
| | - Lutao Du
- Department of Clinical LaboratoryThe Second HospitalCheeloo College of MedicineShandong UniversityJinanShandongChina
- Shandong Engineering and Technology Research Center for Tumor Marker DetectionJinanShandongChina
- Shandong Provincial Clinical Medicine Research Center for Clinical LaboratoryJinanShandongChina
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Yuan R, Zhao W, Wang QQ, He J, Han S, Gao H, Feng Y, Yang S. Cucurbitacin B inhibits non-small cell lung cancer in vivo and in vitro by triggering TLR4/NLRP3/GSDMD-dependent pyroptosis. Pharmacol Res 2021; 170:105748. [PMID: 34217831 DOI: 10.1016/j.phrs.2021.105748] [Citation(s) in RCA: 128] [Impact Index Per Article: 42.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 06/09/2021] [Accepted: 06/27/2021] [Indexed: 12/21/2022]
Abstract
Pyroptosis, a type of programmed cell death (PCD), is characterized by cell swelling with bubbles, and the release of inflammatory cell cytokines. Cucurbitacin B (CuB), extracted from muskmelon pedicel, is a natural bioactive product that could effectively exert anti-tumor activities in lung cancer. However, the exact molecular mechanisms and the direct targets of CuB in non-small cell lung cancer (NSCLC) remain to be discovered. Here, we firstly found that CuB exerted an anti-tumor effect via pyroptosis in NSCLC cells and NSCLC mice models. Next, based on the molecular docking and cellular thermal shift assay (CETSA), we identified that CuB directly bound to Toll-like receptor 4 (TLR4) to activate the NLRP3 inflammasome, which further caused the separation of N- and C-terminals of Gasdermin D (GSDMD) to execute pyroptosis. Moreover, CuB enhanced the mitochondrial reactive oxygen species (ROS), mitochondrial membrane protein Tom20 accumulation, and cytosolic calcium (Ca2+) release, leading to pyroptosis in NSCLC cells. Silencing of TLR4 inhibited CuB-induced pyroptosis and decreased the level of ROS and Ca2+ in A549 cells. In vivo study showed that CuB treatment suppressed lung tumor growth in mice via pyroptosis without dose-dependent manner, and CuB at 0.75 mg/kg had a better anti-tumor effect compared to the Gefitinib group. Taken together, our findings revealed the mechanisms and targets of CuB triggering pyroptosis in NSCLC, thus supporting the notion of developing CuB as a promising therapeutic agent for NSCLC.
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Affiliation(s)
- Renyikun Yuan
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China; College of Pharmacy, Guangxi University of Chinese Medicine, Nanning 530000, China
| | - Wentong Zhao
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China; College of Pharmacy, Guangxi University of Chinese Medicine, Nanning 530000, China
| | - Qin-Qin Wang
- College of Pharmacy, Guangxi University of Chinese Medicine, Nanning 530000, China; Guangxi Engineering Technology Research Center of Advantage Chinese Patent Drug and Ethnic Drug Development, Nanning 530020, China
| | - Jia He
- College of Pharmacy, Guangxi University of Chinese Medicine, Nanning 530000, China; Guangxi Engineering Technology Research Center of Advantage Chinese Patent Drug and Ethnic Drug Development, Nanning 530020, China
| | - Shan Han
- College of Pharmacy, Guangxi University of Chinese Medicine, Nanning 530000, China; Guangxi Engineering Technology Research Center of Advantage Chinese Patent Drug and Ethnic Drug Development, Nanning 530020, China
| | - Hongwei Gao
- College of Pharmacy, Guangxi University of Chinese Medicine, Nanning 530000, China; Guangxi Engineering Technology Research Center of Advantage Chinese Patent Drug and Ethnic Drug Development, Nanning 530020, China.
| | - Yulin Feng
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China; State Key Laboratory of Innovative Drug and Efficient Energy-Saving Pharmaceutical Equipment, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China.
| | - Shilin Yang
- College of Pharmacy, Guangxi University of Chinese Medicine, Nanning 530000, China; Guangxi Engineering Technology Research Center of Advantage Chinese Patent Drug and Ethnic Drug Development, Nanning 530020, China
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530
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Song JL, Zhang GL. Deoxynivalenol and Zearalenone: Different Mycotoxins with Different Toxic Effects in the Sertoli Cells of Equus asinus. Cells 2021; 10:cells10081898. [PMID: 34440667 PMCID: PMC8394322 DOI: 10.3390/cells10081898] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 07/20/2021] [Accepted: 07/22/2021] [Indexed: 12/30/2022] Open
Abstract
(1) Background: Deoxynivalenol (DON) and zearalenone (ZEA) are type B trichothecene mycotoxins that exert serious toxic effects on the reproduction of domestic animals. However, there is little information about the toxicity of mycotoxins on testis development in Equus asinus. This study investigated the biological effects of DON and ZEA exposure on Sertoli cells (SCs) of Equus asinus; (2) Methods: We administered 10 μM and 30 μM DON and ZEA to cells cultured in vitro; (3) Results: The results showed that 10 μM DON exposure remarkably changed pyroptosis-associated genes and that 30 μM ZEA exposure changed inflammation-associated genes in SCs. The mRNA expression of cancer-promoting genes was remarkably upregulated in the cells exposed to DON or 30 μM ZEA; in particular, DON and ZEA remarkably disturbed the expression of androgen and oestrogen secretion-related genes. Furthermore, quantitative RT-PCR, Western blot, and immunofluorescence analyses verified the different expression patterns of related genes in DON- and ZEA-exposed SCs; (4) Conclusions: Collectively, these results illustrated the impact of exposure to different toxins and concrete toxicity on the mRNA expression of SCs from Equus asinus in vitro.
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Affiliation(s)
- Jun-Lin Song
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China;
- Central Laboratory, Qingdao Agricultural University, Qingdao 266109, China
| | - Guo-Liang Zhang
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China;
- Correspondence:
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531
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Wu D, Wei C, Li Y, Yang X, Zhou S. Pyroptosis, a New Breakthrough in Cancer Treatment. Front Oncol 2021; 11:698811. [PMID: 34381721 PMCID: PMC8350724 DOI: 10.3389/fonc.2021.698811] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 07/02/2021] [Indexed: 12/11/2022] Open
Abstract
The way of cell death can be roughly divided into two categories: cell necrosis and PCD(programmed cell death). Pyroptosis is a kind of PCD, its occurrence depends on the gasdermin protein family and it will produce inflammatory response. With constant research in recent years, more and more evidences show that pyroptosis is closely related to the occurrence and development of tumors. The treatment of tumors is a big problem worldwide. We focus on whether we can discover new potential tumor markers and new therapeutic targets from the mechanism. If we can understand the mechanism of pyroptosis and clear the relationship between pyroptosis and the development of tumors, this may provide a new reference for clinical cancer treatment.
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Affiliation(s)
- Dengqiang Wu
- National Center for International Research of Bio-targeting Theranostics, Guangxi Key Laboratory of Bio-targeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Talent Highland of Bio-targeting Theranostics, Guangxi Medical University, Nanning, China
| | - Changhong Wei
- National Center for International Research of Bio-targeting Theranostics, Guangxi Key Laboratory of Bio-targeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Talent Highland of Bio-targeting Theranostics, Guangxi Medical University, Nanning, China
| | - Yujie Li
- Department of Biochemistry and Molecular Biology, School of Pre-Clinical Science, Guangxi Medical University, Nanning, China
| | - Xuejia Yang
- National Center for International Research of Bio-targeting Theranostics, Guangxi Key Laboratory of Bio-targeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Talent Highland of Bio-targeting Theranostics, Guangxi Medical University, Nanning, China
| | - Sufang Zhou
- National Center for International Research of Bio-targeting Theranostics, Guangxi Key Laboratory of Bio-targeting Theranostics, Collaborative Innovation Center for Targeting Tumor Diagnosis and Therapy, Guangxi Talent Highland of Bio-targeting Theranostics, Guangxi Medical University, Nanning, China.,Department of Biochemistry and Molecular Biology, School of Pre-Clinical Science, Guangxi Medical University, Nanning, China
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532
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In Vitro Anticancer Activity and Oxidative Stress Biomarkers Status Determined by Usnea barbata (L.) F.H. Wigg. Dry Extracts. Antioxidants (Basel) 2021; 10:antiox10071141. [PMID: 34356377 PMCID: PMC8301184 DOI: 10.3390/antiox10071141] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/12/2021] [Accepted: 07/16/2021] [Indexed: 12/22/2022] Open
Abstract
Lichens represent an important resource for common traditional medicines due to their numerous metabolites that can exert diverse pharmacological activities including anticancer effects. To find new anticancer compounds with fewer side effects and low tumor resistance, a bioprospective study of Usnea barbata (L.) F.H. Wigg. (U. barbata), a lichen from the Călimani Mountains (Suceava county, Romania) was performed. The aim of this research was to investigate the anticancer potential, morphologic changes, wound healing property, clonogenesis, and oxidative stress biomarker status of four extracts of U. barbata in different solvents (methanol, ethanol, acetone, and ethyl acetate), and also of usnic acid (UA) as a positive control on the CAL-27 (ATCC® CRL-2095™) oral squamous carcinoma (OSCC) cell line and V79 (ATCC® CCL-93™) lung fibroblasts as normal cells. Using the MTT assay and according to IC50 values, it was found that the most potent anticancer property was displayed by acetone and ethyl acetate extracts. All U. barbata extracts determined morphological modifications (losing adhesion capacity, membrane shrinkage, formation of abnormal cellular wrinkles, and vacuolization) with higher intensity in tumor cells than in normal ones. The most intense anti-migration effect was established in the acetone extract treatment. The clonogenic assay showed that some U. barbata extracts decreased the ability of cancer cells to form colonies compared to untreated cells, suggesting a potential anti-tumorigenic property of the tested extracts. Therefore, all the U. barbata extracts manifest anticancer activity of different intensity, based, at least partially, on an imbalance in antioxidant defense mechanisms, causing oxidative stress.
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533
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Ju A, Tang J, Chen S, Fu Y, Luo Y. Pyroptosis-Related Gene Signatures Can Robustly Diagnose Skin Cutaneous Melanoma and Predict the Prognosis. Front Oncol 2021; 11:709077. [PMID: 34327145 PMCID: PMC8313829 DOI: 10.3389/fonc.2021.709077] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 06/30/2021] [Indexed: 01/17/2023] Open
Abstract
Skin cutaneous melanoma (SKCM) is a chronically malignant tumor with a high mortality rate. Pyroptosis, a kind of pro-inflammatory programmed cell death, has been linked to cancer in recent studies. However, the value of pyroptosis in the diagnosis and prognosis of SKCM is not clear. In this study, it was discovered that 20 pyroptosis-related genes (PRGs) differed in expression between SKCM and normal tissues, which were related to diagnosis and prognosis. Firstly, based on these genes, nine machine-learning algorithms were shown to perform well in constructing diagnostic classifiers, including K-Nearest Neighbor (KNN), logistic regression, Support Vector Machine (SVM), Artificial Neural Network (ANN), decision tree, random forest, XGBoost, LightGBM, and CatBoost. Secondly, the least absolute shrinkage and selection operator (LASSO) Cox regression analysis was applied and the prognostic model was constructed based on 9 PRGs. Subgroups in low and high risks determined by the prognostic model were shown to have different survival. Thirdly, functional enrichment analyses were performed by applying the gene set enrichment analysis (GSEA), and results suggested that the risk was related to immune response. In conclusion, the expression signatures of pyroptosis-related genes are effective and robust in the diagnosis and prognosis of SKCM, which is related to immunity.
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Affiliation(s)
- Anji Ju
- The National Engineering Laboratory for Anti-Tumor Protein Therapeutics, Tsinghua University, Beijing, China.,Beijing Key Laboratory for Protein Therapeutics, Tsinghua University, Beijing, China.,Cancer Biology Laboratory, School of Life Sciences, Tsinghua University, Beijing, China
| | - Jiaze Tang
- The National Engineering Laboratory for Anti-Tumor Protein Therapeutics, Tsinghua University, Beijing, China.,Beijing Key Laboratory for Protein Therapeutics, Tsinghua University, Beijing, China.,Cancer Biology Laboratory, School of Life Sciences, Tsinghua University, Beijing, China
| | - Shuohua Chen
- The National Engineering Laboratory for Anti-Tumor Protein Therapeutics, Tsinghua University, Beijing, China.,Beijing Key Laboratory for Protein Therapeutics, Tsinghua University, Beijing, China.,Cancer Biology Laboratory, School of Life Sciences, Tsinghua University, Beijing, China
| | - Yan Fu
- The National Engineering Laboratory for Anti-Tumor Protein Therapeutics, Tsinghua University, Beijing, China.,Beijing Key Laboratory for Protein Therapeutics, Tsinghua University, Beijing, China.,Cancer Biology Laboratory, School of Life Sciences, Tsinghua University, Beijing, China
| | - Yongzhang Luo
- The National Engineering Laboratory for Anti-Tumor Protein Therapeutics, Tsinghua University, Beijing, China.,Beijing Key Laboratory for Protein Therapeutics, Tsinghua University, Beijing, China.,Cancer Biology Laboratory, School of Life Sciences, Tsinghua University, Beijing, China
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534
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Fan K, Yang J, Gong WY, Pan YC, Zheng P, Yue XF. NLRP3 inflammasome activation mediates sleep deprivation-induced pyroptosis in mice. PeerJ 2021; 9:e11609. [PMID: 34268006 PMCID: PMC8269641 DOI: 10.7717/peerj.11609] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 05/24/2021] [Indexed: 02/01/2023] Open
Abstract
Background Sleep deprivation (SD) has many deleterious health effects, including cognitive decline, work ability decline, inadequate alertness, etc. Neuroinflammation plays an important role in sleep deprivation. However, the underlying mechanism is still unclear. Methods In the present study, we detected the activation of microglia and apoptosis of nerve cells in sleep deprivation (SD) mice model using IHC, HE staining and TUNEL apoptosis assay. RT-PCR array data were used to detect the expression of inflammatory bodies in hippocampal CA1 region after sleep deprivation, to explore how NLRP3 inflammasome regulates neuronal apoptosis and how specific signaling pathways are involved in SD-induced activation of NLRP3/pyrosis axis. Results We found the number of microglia significantly increased in SD mice, while this effect was blocked by sleep recovery. RT-PCR array data suggested that NLRP3 inflammasome, but not other inflammasomes, was obviously increased in hippocampus CA1 region after sleep deprivation. Mechanistically, we found that NLRP3 mediated the pyroptosis of neurocyte through GSDMD-dependent way , and P38 and ERK-MAPK signaling pathway is involved in SD-induced activation of NLRP3/pyroptosis axis. All these results suggested that MAPK/NLRP3 axis mediated SD-induced pyroptosis. Conclusion NLRP3 plays an important role in SD-induced neuroinflammation. Thus, NLRP3 inflammasome is expected to be a potential therapeutic target for SD-induced neuroinflammation.
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Affiliation(s)
- Kun Fan
- Department of Anesthesiology, Shanghai Sixth People's Hospital East Affiliated to Shanghai University of Medicine & Health Sciences Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, PR China
| | - Jiajun Yang
- Department of Neurology, Shanghai Sixth People's Hospital East Affiliated to Shanghai University of Medicine & Health Sciences Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, PR China
| | - Wen-Yi Gong
- Department of Anesthesiology, Shanghai First People's Hospital, Baoshan Branch, Shanghai, PR China
| | - Yong-Chao Pan
- Department of Neurology, Shanghai Sixth People's Hospital East Affiliated to Shanghai University of Medicine & Health Sciences Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, PR China
| | - Peibing Zheng
- Department of Neurology, Shanghai Sixth People's Hospital East Affiliated to Shanghai University of Medicine & Health Sciences Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, PR China
| | - Xiao-Fang Yue
- Department of Neurology, Shanghai Sixth People's Hospital East Affiliated to Shanghai University of Medicine & Health Sciences Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, PR China
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535
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Abstract
Significance: Kidney diseases remain a worldwide public health problem resulting in millions of deaths each year; they are characterized by progressive destruction of renal function by sustained inflammation. Pyroptosis is a lytic type of programmed cell death involved in inflammation, as well as a key fibrotic mechanism that is critical in the development of kidney pathology. Pyroptosis is induced by the cleavage of Gasdermins by various caspases and is executed by the insertion of the N-terminal fragment of cleaved Gasdermins into the plasma membrane, creating oligomeric pores and allowing the release of diverse proinflammatory products into the extracellular space. Inflammasomes are multiprotein complexes leading to the activation of caspase-1, which will cleave Gasdermin D, releasing several proinflammatory cytokines; this results in the initiation and amplification of the inflammatory response. Recent Advances: The efficacy of Gasdermin D cleavage is reduced by a change in the redox balance. Recently, several studies have shown that the attenuation of reactive oxygen species (ROS) production induced by antioxidant pathways results in a reduction of renal pyroptosis. In this review, we discuss the role of pyroptosis in the pathogenesis of chronic kidney disease (CKD) and acute kidney disease; summarize the clinical outcomes and different molecular mechanisms leading to Gasdermin activation; and examine studies about the capacity of antioxidants, particularly Nrf2 activators, to ameliorate Gasdermin activity. Future Directions: We illustrate the potential influence of the deregulation of redox balance on inflammasome activity and pyroptosis as a novel therapeutic approach for the treatment of kidney diseases. Antioxid. Redox Signal. 35, 40-60.
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Affiliation(s)
- Santiago Cuevas
- Molecular Inflammation Group, Biomedical Research Institute of Murcia, University Clinical Hospital Virgen de la Arrixaca, Murcia, Spain
| | - Pablo Pelegrín
- Molecular Inflammation Group, Biomedical Research Institute of Murcia, University Clinical Hospital Virgen de la Arrixaca, Murcia, Spain
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536
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Wang Y, Peng J, Xie X, Zhang Z, Li M, Yang M. Gasdermin E-mediated programmed cell death: An unpaved path to tumor suppression. J Cancer 2021; 12:5241-5248. [PMID: 34335940 PMCID: PMC8317517 DOI: 10.7150/jca.48989] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 06/07/2021] [Indexed: 12/31/2022] Open
Abstract
Hearing loss-associated protein gasdermin E (GSDME), an effector of secondary necrosis, has been identified in a new pathway of programmed cell death (PCD). GSDME epigenetic silencing and mutations resulting in loss-of-function have been reported in cancer tissues. Additionally, GSDME upregulation inhibits tumor proliferation as well as colony forming ability, and reduces the incidence of lymphatic metastasis, demonstrating that GSDME may act as a tumor suppressor. Here, we have focused on the molecular mechanisms of GSDME-mediated PCD, and tried to reveal the crosstalk between this cell death pathway and apoptosis, autophagy, GSDMD-mediated pyroptosis. Moreover, we concluded the anti-cancer activity of GSDME include forming permeable membranes, and triggering anti-cancer immunity. Thus, GSDME was potential to be a novel target for cancer prevention and treatment.
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Affiliation(s)
- Yueyuan Wang
- Department of Breast Surgery, The First Hospital of Jilin University, Changchun, People's Republic of China
| | - Jingyu Peng
- Department of Breast Surgery, The First Hospital of Jilin University, Changchun, People's Republic of China
| | - Xiao Xie
- Department of Breast Surgery, The First Hospital of Jilin University, Changchun, People's Republic of China
| | - Zhihao Zhang
- Department of Breast Surgery, The First Hospital of Jilin University, Changchun, People's Republic of China
| | - Mingxi Li
- Department of Neurology and Neuroscience Center, The First Hospital of Jilin University, Changchun, People's Republic of China
| | - Ming Yang
- Department of Breast Surgery, The First Hospital of Jilin University, Changchun, People's Republic of China
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537
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Identification of the pyroptosis‑related prognostic gene signature and the associated regulation axis in lung adenocarcinoma. Cell Death Discov 2021; 7:161. [PMID: 34226539 PMCID: PMC8257680 DOI: 10.1038/s41420-021-00557-2] [Citation(s) in RCA: 128] [Impact Index Per Article: 42.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 05/22/2021] [Accepted: 06/13/2021] [Indexed: 12/22/2022] Open
Abstract
Lung adenocarcinoma (LUAD) remains the most common deadly disease and has a poor prognosis. Pyroptosis could regulate tumour cell proliferation, invasion, and metastasis, thereby affecting the prognosis of cancer patients. However, the role of pyroptosis-related genes (PRGs) in LUAD remains unclear. In our study, comprehensive bioinformatics analysis was performed to construct a prognostic gene model and ceRNA network. The correlations between PRGs and tumour-immune infiltration, tumour mutation burden, and microsatellite instability were evaluated using Pearson’s correlation analysis. A total of 23 PRGs were upregulated or downregulated in LUAD. The genetic mutation variation landscape of PRG in LUAD was also summarised. Functional enrichment analysis revealed that these 33 PRGs were mainly involved in pyroptosis, the NOD-like receptor signalling pathway, and the Toll-like receptor signalling pathway. Prognosis analysis indicated a poor survival rate in LUAD patients with low expression of NLRP7, NLRP1, NLRP2, and NOD1 and high CASP6 expression. A prognostic PRG model constructed using the above five prognostic genes could predict the overall survival of LUAD patients with medium-to-high accuracy. Significant correlation was observed between prognostic PRGs and immune-cell infiltration, tumour mutation burden, and microsatellite instability. A ceRNA network was constructed to identify a lncRNA KCNQ1OT1/miR-335-5p/NLRP1/NLRP7 regulatory axis in LUAD. In conclusion, we performed a comprehensive bioinformatics analysis and identified a prognostic PRG signature containing five genes (NLRP7, NLRP1, NLRP2, NOD1, and CASP6) for LUAD patients. Our results also identified a lncRNA KCNQ1OT1/miR-335-5p/NLRP1/NLRP7 regulatory axis, which may also play an important role in the progression of LUAD. Further study needs to be conducted to verify this result.
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538
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Jiang Z, Chen J, Chen J, Lei Z, Chen H, Wu J, Bai X, Wanyan P, Yu Q. Anti-inflammatory effects of paeoniflorin caused by regulation of the hif1a/miR-210/caspase1/GSDMD signaling pathway in astrocytes: a novel strategy for hypoxia-induced brain injury in rats. Immunopharmacol Immunotoxicol 2021; 43:410-418. [PMID: 34114917 DOI: 10.1080/08923973.2021.1924194] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Context: Hypoxia-induced injury is a classic symptom of obstructive sleep apnea hypopnea syndrome (OSAHS), which is a risk factor of various diseases, such as hypertension, heart failure and stroke. However, there is no effective therapy for hypoxia-induced injury or OSAHS due to the elusive mechanism involved.Objective: This study aimed to assess the effects of paeoniflorin on hypoxia-induced injury and explore the underlying mechanism.Materials and methods: Hypoxic models of SD rats and CTX-TNA2 cells were used to assess the effect of paeoniflorin, and the expressions of hif1a, miR-210, caspase1 and GSDMD were detected using western blots and RT-PCR. Plasmid transfection was performed to explore the role of miR-210 in the effect of paeoniflorin.Results: Firstly, we confirmed that hypoxia induced severe neuronal injury and an enhancement of inflammation in the rat brain, with elevated expression of caspase1, IL1b and IL18. In addition, the results showed an activation of astrocytes and an increased level of pyroptosis under hypoxic conditions, which suggested a critical role of pyroptosis in hypoxiainduced injury of the brain. Furthermore, we found that compared with the controls, paeoniflorin treatment improved hypoxia-induced pyroptosis in astrocytes. Moreover, we detected the activation of hif1a/miR-210 signaling in the effects of paeoniflorin on astrocytes. As expected, the expression of hif1a and miR-210 was significantly upregulated in astrocytes when exposed to hypoxia, while paeoniflorin treatment reversed these enhancements. After transfection of miR-210 mimics, the attenuation of pyroptosis induced by paeoniflorin was suppressed, which was accompanied by an increase of ROS levels, as well as LDH release, indicating a critical role of miR-210 in pyroptosis in astrocytes.Conclusions: Our findings demonstrated that paeoniflorin improved hypoxia-induced pyroptosis in astrocytes via depressing hif1a/miR-210/caspase1/GSDMD signaling, providing robust evidence for the treatment of hypoxic injury and OSAHS.HighlightsHypoxia induces severe injury and inflammatory response in the rat brain;Hypoxia enhanced pyroptotic level and led to an activation of astrocytes.;Paeoniflorin alleviates hypoxia-induced pyroptosis in astrocytes;Transfection of miR-210 mimics suppressed the effects of paeoniflorin on hypoxia-induced pyroptosis in astrocytes.
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Affiliation(s)
- Zhenxiu Jiang
- The First Clinical Medical College, Lanzhou University, Lanzhou, China.,Department of Neurology, The First Hospital of Lanzhou University, Lanzhou, China
| | - Jun Chen
- Department of Neurology, The First Hospital of Lanzhou University, Lanzhou, China
| | - Jiangjun Chen
- Department of Neurology, The First Hospital of Lanzhou University, Lanzhou, China
| | - Zelin Lei
- Department of Respiration, The First Hospital of Lanzhou University, Lanzhou, China
| | - Hailin Chen
- School of Basic Medical Science, Lanzhou University, Lanzhou, China
| | - Jiqiang Wu
- Department of Respiration, The First Hospital of Lanzhou University, Lanzhou, China
| | - Xue Bai
- Department of Respiration, The First Hospital of Lanzhou University, Lanzhou, China
| | - Pingping Wanyan
- Department of Nephrology, The Second Hospital of Lanzhou University, Lanzhou, China
| | - Qin Yu
- The First Clinical Medical College, Lanzhou University, Lanzhou, China.,Department of Respiration, The First Hospital of Lanzhou University, Lanzhou, China
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539
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Significance of Mast Cell Formed Extracellular Traps in Microbial Defense. Clin Rev Allergy Immunol 2021; 62:160-179. [PMID: 34024033 PMCID: PMC8140557 DOI: 10.1007/s12016-021-08861-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/11/2021] [Indexed: 02/07/2023]
Abstract
Mast cells (MCs) are critically involved in microbial defense by releasing antimicrobial peptides (such as cathelicidin LL-37 and defensins) and phagocytosis of microbes. In past years, it has become evident that in addition MCs may eliminate invading pathogens by ejection of web-like structures of DNA strands embedded with proteins known together as extracellular traps (ETs). Upon stimulation of resting MCs with various microorganisms, their products (including superantigens and toxins), or synthetic chemicals, MCs become activated and enter into a multistage process that includes disintegration of the nuclear membrane, release of chromatin into the cytoplasm, adhesion of cytoplasmic granules on the emerging DNA web, and ejection of the complex into the extracellular space. This so-called ETosis is often associated with cell death of the producing MC, and the type of stimulus potentially determines the ratio of surviving vs. killed MCs. Comparison of different microorganisms with specific elimination characteristics such as S pyogenes (eliminated by MCs only through extracellular mechanisms), S aureus (removed by phagocytosis), fungi, and parasites has revealed important aspects of MC extracellular trap (MCET) biology. Molecular studies identified that the formation of MCET depends on NADPH oxidase-generated reactive oxygen species (ROS). In this review, we summarize the present state-of-the-art on the biological relevance of MCETosis, and its underlying molecular and cellular mechanisms. We also provide an overview over the techniques used to study the structure and function of MCETs, including electron microscopy and fluorescence microscopy using specific monoclonal antibodies (mAbs) to detect MCET-associated proteins such as tryptase and histones, and cell-impermeant DNA dyes for labeling of extracellular DNA. Comparing the type and biofunction of further MCET decorating proteins with ETs produced by other immune cells may help provide a better insight into MCET biology in the pathogenesis of autoimmune and inflammatory disorders as well as microbial defense.
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540
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Protective effect of combination of anakinra and MCC950 against acute lung injury is achieved through suppression of the NF-κB-mediated-MAPK and NLRP3-caspase pathways. Int Immunopharmacol 2021; 97:107506. [PMID: 34022766 DOI: 10.1016/j.intimp.2021.107506] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 02/03/2021] [Accepted: 02/11/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND It has been uncovered that the interleukin-1 receptor antagonist anakinra and the NLRP3 inflammasome blocker MCC950 can alleviate acute lung injury (ALI). However, the specific mechanism underlying these effects remains unknown. Thus, we sought to investigate the effects of anakinra and MCC950 in ALI as well as the molecular mechanisms. METHODS We treated C57BL/6 mice with aerosols of anakinra and/or MCC950 along with lipopolysaccharide (LPS), followed by mechanical ventilation (MV) treatment after 1.5 h of inhalation of aforementioned compounds. Lung injury was assessed by determining the level of inflammatory factors in the alveolar lavage fluid and monitoring blood oxygen saturation. We confirmed our findings of regulation of the ALI model through the nuclear factor-κB (NF-κB)/mitogen-activated protein kinase (MAPK)/nucleotide binding domain and leucine-rich repeat (NLR) pyrin domain containing 3 (NLRP3)-caspase pathway in further studies with RelA-/- mice. RESULTS Combined treatment of anakinra and MCC950 presented the best therapeutic effect on LPS and MV-induced ALI than did treatment with anakinra or MCC950 alone. Combined therapy with anakinra and MCC950 suppressed MAPK and NLRP3-caspase via inhibition of the NF-κB pathway to improve ALI, but the therapeutic pathway was revoked by knockout of NF-κB. CONCLUSION Taken together, combined treatment of anakinra and MCC950 was effective in alleviating ALI in the mouse model, highlighting a new insight into ALI treatment.
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541
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Tan C, Liu W, Zheng ZH, Wan XG. LncRNA HOTTIP inhibits cell pyroptosis by targeting miR-148a-3p/AKT2 axis in ovarian cancer. Cell Biol Int 2021; 45:1487-1497. [PMID: 33710684 DOI: 10.1002/cbin.11588] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 02/26/2021] [Accepted: 03/07/2021] [Indexed: 12/28/2022]
Abstract
Long noncoding RNA HOTTIP is a crucial regulator in multiple types of cancer, including ovarian cancer (OC). However, the biological roles and underlying mechanisms of HOTTIP in OC have rarely been studied. Hence, this study aimed to investigate the functional correlation between HOTTIP and pyroptosis in OC progression. The expression of HOTTIP in OC tissues and cell lines was characterized by quantitative real-time PCR. Cell proliferation was evaluated using Cell Counting Kit-8 and clone formation assays. Western blot was performed to quantify protein levels. A dual-luciferase reporter assay was used to analyze the molecular interaction among HOTTIP, miR-148a-3p, and AKT2. The expression of HOTTIP was significantly upregulated in OC tissue samples and cell lines. The silencing of HOTTIP led to the inhibition of cell proliferation and NLRP1 inflammasome-mediated pyroptosis. In addition, HOTTIP increased AKT2 expression by negatively regulating miR-148a-3p and then inhibited ASK1/JNK signaling. Further rescue experiments revealed that downregulation of miR-148a-3p and overexpression of AKT2 obviously diminished the effects of HOTTIP downregulation in OC cells. Thus, our study elucidated a novel pyroptosis-related mechanism by which HOTTIP participated in OC progression, which might provide a theoretical reference for clinical treatment.
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Affiliation(s)
- Cai Tan
- Department of Health, Jiangxi Maternal and Child Health Hospital, Nanchang, Jiangxi Province, PR China
| | - Wei Liu
- Department of Reproductive Health, Jiangxi Maternal and Child Health Hospital, Nanchang, Jiangxi Province, PR China
| | - Zhi-Hua Zheng
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, PR China
| | - Xiao-Gang Wan
- Department of General Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, PR China
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542
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Li S, Liu Y, Li J, Zhao X, Yu D. Mechanisms of Ferroptosis and Application to Head and Neck Squamous Cell Carcinoma Treatments. DNA Cell Biol 2021; 40:720-732. [PMID: 33979530 DOI: 10.1089/dna.2021.0023] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Many kinds of cancer cells are intrinsically sensitive to ferroptosis, and research interest regarding ferroptosis has been sparked by its significant role in many detrimental diseases. Ferroptosis is a novel type of iron-dependent cell death mediated by accumulation of reactive oxygen species and lipid peroxidation. Furthermore, a large number of small agents can induce ferroptosis in numerous kinds of cancer cells, including prostate cancer, pancreatic cancer, breast cancer, lymphomas, and renal cancer. These insights may help discover novel approaches for cancer therapeutic strategies; however, there is considerable uncertainty regarding ferroptosis in head and neck cancer (HNC). So far, no review of the current studies on this topic has been published. Therefore, we here elaborate the mechanisms of ferroptosis and summarize the latest findings regarding its role in HNC according to current literature. The respective findings shed light on the role of ferroptosis in HNC treatment with a number of important implications for future practice in HNC management, as outlined in this review.
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Affiliation(s)
- Shuang Li
- Department of Otolaryngology-Head and Neck Surgery, The Second Hospital of Jilin University, Changchun, People's Republic of China
| | - Yan Liu
- Department of Otolaryngology-Head and Neck Surgery, The Second Hospital of Jilin University, Changchun, People's Republic of China
| | - Jinqiu Li
- Department of Otolaryngology-Head and Neck Surgery, The Second Hospital of Jilin University, Changchun, People's Republic of China
| | - Xue Zhao
- Department of Otolaryngology-Head and Neck Surgery, The Second Hospital of Jilin University, Changchun, People's Republic of China
| | - Dan Yu
- Department of Otolaryngology-Head and Neck Surgery, The Second Hospital of Jilin University, Changchun, People's Republic of China
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Abstract
Pyroptosis, an inflammatory form of programmed cell death, takes an essential part in a wide variety of physiological activities, for instance, implantation, placentation and the body's defense against infection. However, once excessively activated, pyroptosis mediated by the activation of inflammasomes can be highly pathological. It can cause inflammatory and autoimmune diseases including a variety of obstetrical and gynecological diseases, such as endometriosis, gestational diabetes mellitus, insulin resistance in polycystic ovary syndrome, and multiple obstetric complications including preeclampsia. Although the role of pyroptosis in the pathogenesis of the above mentioned diseases has not been fully elucidated, we try to tap its therapeutic potential by targeting pyroptosis signaling and inflammasome formation. Pyroptosis and inflammasomes are confirmed to be involved in endometriosis and gynecological malignant tumors, therefore, medical approachs inducing pyroptosis of the ectopic endometrium and tumor cells can be feasible treatments for endometriosis and gynecological cancers. On the maternal-fetal interface, although a certain level of the innate immune response activation is required for a successful implantation and placentation, maternal and fetal injury may occur once the inflammasomes are over-activated. Besides, since gestational diabetes mellitus and insulin resistance in polycystic ovary syndrome share common pathogenesis with metabolic diseases, this domain research sheds light on future study of some obstetrical and gynecological diseases.
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Affiliation(s)
- Shu-Yue Yu
- Department of Gynecology, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, P.R. China
- Shanghai Key Laboratory of Female Reproductive Endocrine-Related Diseases, Fudan University,, Shanghai, P.R. China
| | - Xue-Lian Li
- Department of Gynecology, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, P.R. China
- Shanghai Key Laboratory of Female Reproductive Endocrine-Related Diseases, Fudan University,, Shanghai, P.R. China
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544
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Zhang Y, Zhang R, Han X. Disulfiram inhibits inflammation and fibrosis in a rat unilateral ureteral obstruction model by inhibiting gasdermin D cleavage and pyroptosis. Inflamm Res 2021; 70:543-552. [PMID: 33851234 DOI: 10.1007/s00011-021-01457-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 03/15/2021] [Accepted: 03/24/2021] [Indexed: 10/21/2022] Open
Abstract
BACKGROUND As an inhibitor of GSDMD, Disulfiram (DSL) can significantly inhibit cell pyroptosis. Cell pyroptosis plays an important role in renal fibrosis. METHODS HK-2 cells were induced by Lps and ATP to form a pyroptosis model, and the cells were treated by DSL. CCK-8 detected the cell activity. Immunofluorescence (IF) detected the GSDMD. ELISA detected the expression of inflammatory cytokines. Flow cytometry and Western blot detected cell apoptosis and pyroptosis. Collagen type I kit detected collagen secretion, and western blot detected fibrosis marker protein expression. Then, a rat model of unilateral ureteral obstruction (UUO) was established. HE staining detected the degree of renal tissue injury, and Masson staining detected the degree of fibrosis. What's more, the apoptosis level of tissue cells was detected by TUNEL. And the inflammatory factors in peripheral blood and renal tissue were detected by ELISA. Furthermore, the expression of GSDMD was detected by immunohistochemistry (IHC), and Western blot was used to detect the expression levels of apoptosis and pyroptosis-related proteins in tissues. RESULTS It was found that DSL can inhibit the cell membrane perforation of GSDMD-N by inhibiting the cleavage of GSDMD, hence, it inhibited the occurrence of inflammation, cell pyroptosis, and the fibrosis of HK-2 cells. But if the cell has already undergone pyroptosis, DSL does not provide significant prevention. In vivo experiment, it further verified that pretreated DSL had inhibited renal fibrosis injury. CONCLUSION Disulfiram can inhibit inflammation and fibrosis in renal fibrosis rats by inhibiting GSDMD.
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Affiliation(s)
- Yu Zhang
- Department of Nephrology, Taizhou People's Hospital, The Fifth Affiliated Hospital of Nantong University, Taizhou, 225300, Jiangsu, China
| | - Ruicheng Zhang
- Department of Nephrology, Hainan Medical University First Affiliated Hospital, Haikou, 570102, Hainan, China
| | - Xiaohu Han
- Department of Blood Purification Center of Nephrology, Nanjing Yimin Hospital, No. 86, Shanggao Road, Jiangning District, Nanjing, 211100, Jiangsu, China.
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545
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Zhang Y, Li F, Wang L, Lou Y. A438079 affects colorectal cancer cell proliferation, migration, apoptosis, and pyroptosis by inhibiting the P2X7 receptor. Biochem Biophys Res Commun 2021; 558:147-153. [PMID: 33915328 DOI: 10.1016/j.bbrc.2021.04.076] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Accepted: 04/18/2021] [Indexed: 02/06/2023]
Abstract
BACKGROUND Our previous study identified elevated expression of the P2X7 receptor (P2X7R) in colorectal cancer (CRC) patients, suggesting the receptor is a target for predicting poor disease prognosis. A438079 is a highly selective P2X7R antagonist, however, no studies have identified A438079 effects and mechanisms toward the biological behavior of CRC cells, and its therapeutic in vivo potential in CRC nude mice. METHODS The CRC cell lines, HCT-116 and SW620 were treated with 10 μM A438079, after which proliferation, migration, invasion, and apoptosis were assessed. SW620 cell xenografted BALB/c nude male mice were randomly divided into control, 5-FU, and A438079 groups. Mouse weight and tumor dimensions were also measured every two days. Furthermore, the expression of apoptosis related indicators (P2X7R, Bcl-2, Bax, caspase9, cleaved caspase9, caspase3, and cleaved caspase3) and pyroptosis related indicators (NLRP3, ASC, cleaved caspase1, and interleukin (IL)-β) were investigated in vitro and in vivo. RESULTS A438079 inhibited HCT-116 and SW620 cell proliferation, invasion and migration, and inhibited the growth of CRC xenografts in nude mice. A438079 promoted apoptosis via the Bcl-2/caspase9/caspase3 pathway and inhibited pyroptosis through the NLRP3/caspase1 pathway by inhibiting P2X7R in vitro and in vivo. CONCLUSIONS We preliminarily confirmed the therapeutic potential of A438079 toward CRC, and we provide a sound theoretical basis for A438079 as a new drug for the clinical treatment of CRC.
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Affiliation(s)
- Ying Zhang
- Department of Clinical Oncology, Shengjing Hospital of China Medical University, 39 Huaxiang Road, Shenyang 110022, China; Medical Research Center of Shengjing Hospital, China Medical University, Shenyang 110004, China; Key Laboratory of Research and Application of Animal Model for Environmental and Metabolic Diseases, Liaoning Province, China
| | - Fang Li
- Medical Research Center of Shengjing Hospital, China Medical University, Shenyang 110004, China; Key Laboratory of Research and Application of Animal Model for Environmental and Metabolic Diseases, Liaoning Province, China
| | - Lili Wang
- Key Laboratory of Research and Application of Animal Model for Environmental and Metabolic Diseases, Liaoning Province, China; Medical Research Center of Shengjing Hospital, China Medical University, Shenyang 110004, China.
| | - Yi Lou
- Department of Medical Genetics, China Medical University, Shenyang, China.
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546
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Rodríguez C, Luque N, Blanco I, Sebastian L, Barberà JA, Peinado VI, Tura-Ceide O. Pulmonary Endothelial Dysfunction and Thrombotic Complications in Patients with COVID-19. Am J Respir Cell Mol Biol 2021; 64:407-415. [PMID: 33180562 PMCID: PMC8008805 DOI: 10.1165/rcmb.2020-0359ps] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), a new strain of a Coronaviridae virus that presents 79% genetic similarity to the severe acute respiratory syndrome coronavirus, has been recently recognized as the cause of a global pandemic by the World Health Organization, implying a major threat to world public health. SARS-CoV-2 infects host human cells by binding through the viral spike proteins to the ACE-2 (angiotensin-converting enzyme 2) receptor, fuses with the cell membrane, enters, and starts its replication process to multiply its viral load. Coronavirus disease (COVID-19) was initially considered a respiratory infection that could cause pneumonia. However, in severe cases, it extends beyond the respiratory system and becomes a multiorgan disease. This transition from localized respiratory infection to multiorgan disease is due to two main complications of COVID-19. On the one hand, it is due to the so-called cytokine storm: an uncontrolled inflammatory reaction of the immune system in which defensive molecules become aggressive for the body itself. On the other hand, it is due to the formation of a large number of thrombi that can cause myocardial infarction, stroke, and pulmonary embolism. The pulmonary endothelium actively participates in these two processes, becoming the last barrier before the virus spreads throughout the body. In this review, we examine the role of the pulmonary endothelium in response to COVID-19, the existence of potential biomarkers, and the development of novel therapies to restore vascular homeostasis and to protect and/or treat coagulation, thrombosis patients. In addition, we review the thrombotic complications recently observed in patients with COVID-19 and its potential threatening sequelae.
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Affiliation(s)
- Cristina Rodríguez
- Department of Pulmonary Medicine, Dr. Josep Trueta University Hospital of Girona, Santa Caterina Hospital de Salt and the Girona Biomedical Research Institute, Girona, Spain.,Department of Pulmonary Medicine, Hospital Clínic-Biomedical Research Institute August Pi i Sunyer (IDIBAPS), University of Barcelona, Barcelona, Spain; and
| | - Neus Luque
- Department of Pulmonary Medicine, Dr. Josep Trueta University Hospital of Girona, Santa Caterina Hospital de Salt and the Girona Biomedical Research Institute, Girona, Spain
| | - Isabel Blanco
- Department of Pulmonary Medicine, Hospital Clínic-Biomedical Research Institute August Pi i Sunyer (IDIBAPS), University of Barcelona, Barcelona, Spain; and.,Biomedical Research Networking Center on Respiratory Diseases (CIBERES), Madrid, Spain
| | - Laura Sebastian
- Department of Pulmonary Medicine, Dr. Josep Trueta University Hospital of Girona, Santa Caterina Hospital de Salt and the Girona Biomedical Research Institute, Girona, Spain
| | - Joan Albert Barberà
- Department of Pulmonary Medicine, Hospital Clínic-Biomedical Research Institute August Pi i Sunyer (IDIBAPS), University of Barcelona, Barcelona, Spain; and.,Biomedical Research Networking Center on Respiratory Diseases (CIBERES), Madrid, Spain
| | - Víctor I Peinado
- Department of Pulmonary Medicine, Hospital Clínic-Biomedical Research Institute August Pi i Sunyer (IDIBAPS), University of Barcelona, Barcelona, Spain; and.,Biomedical Research Networking Center on Respiratory Diseases (CIBERES), Madrid, Spain
| | - Olga Tura-Ceide
- Department of Pulmonary Medicine, Dr. Josep Trueta University Hospital of Girona, Santa Caterina Hospital de Salt and the Girona Biomedical Research Institute, Girona, Spain.,Department of Pulmonary Medicine, Hospital Clínic-Biomedical Research Institute August Pi i Sunyer (IDIBAPS), University of Barcelona, Barcelona, Spain; and.,Biomedical Research Networking Center on Respiratory Diseases (CIBERES), Madrid, Spain
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547
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Guo J, Zheng J, Mu M, Chen Z, Xu Z, Zhao C, Yang K, Qin X, Sun X, Yu J. GW4064 enhances the chemosensitivity of colorectal cancer to oxaliplatin by inducing pyroptosis. Biochem Biophys Res Commun 2021; 548:60-66. [PMID: 33631675 DOI: 10.1016/j.bbrc.2021.02.043] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Accepted: 02/10/2021] [Indexed: 12/12/2022]
Abstract
Repeated and long-term oxaliplatin therapy leads to drug resistance and severe adverse events, which limit its clinical use. These difficulties highlight the importance of identifying potent and specific drug combinations to enhance the antitumor effects of oxaliplatin. The farnesoid X receptor (FXR) deficiency in colorectal cancer (CRC) suggests that restoring FXR function might be a promising strategy for CRC treatment. A drug combination study showed that the GW4064 acted synergistically with oxaliplatin in colon cancer cells. The combination of oxaliplatin plus GW4064 inhibited cell growth and colony formation, induced apoptosis and pyroptosis in vitro, and slowed tumor growth in vivo. Mechanistically, GW4064 enhanced the chemosensitivity of cells to oxaliplatin by inducing BAX/caspase-3/GSDME-mediated pyroptosis. Furthermore, the combination of oxaliplatin and GW4064 synergistically inhibited STAT3 signaling by restoring SHP expression. Our study revealed that GW4064 could enhance the antitumor effects of oxaliplatin against CRC, which provides a novel therapeutic strategy based on a combinational approach for CRC treatment.
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Affiliation(s)
- Jing Guo
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, 710061, Xi'an, Shaanxi, China
| | - Jianbao Zheng
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, 710061, Xi'an, Shaanxi, China
| | - Mingchao Mu
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, 710061, Xi'an, Shaanxi, China
| | - Zilu Chen
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, 710061, Xi'an, Shaanxi, China
| | - Zhengshui Xu
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, 710061, Xi'an, Shaanxi, China
| | - Chenye Zhao
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, 710061, Xi'an, Shaanxi, China
| | - Kui Yang
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, 710061, Xi'an, Shaanxi, China
| | - Xiao Qin
- Department of Emergency, Ankang People's Hospital, 725000, Ankang, Shaanxi, China
| | - Xuejun Sun
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, 710061, Xi'an, Shaanxi, China.
| | - Junhui Yu
- Department of General Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, 710061, Xi'an, Shaanxi, China.
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548
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Deng F, Zheng X, Sharma I, Dai Y, Wang Y, Kanwar YS. Regulated cell death in cisplatin-induced AKI: relevance of myo-inositol metabolism. Am J Physiol Renal Physiol 2021; 320:F578-F595. [PMID: 33615890 PMCID: PMC8083971 DOI: 10.1152/ajprenal.00016.2021] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 02/08/2021] [Accepted: 02/09/2021] [Indexed: 12/14/2022] Open
Abstract
Regulated cell death (RCD), distinct from accidental cell death, refers to a process of well-controlled programmed cell death with well-defined pathological mechanisms. In the past few decades, various terms for RCDs were coined, and some of them have been implicated in the pathogenesis of various types of acute kidney injury (AKI). Cisplatin is widely used as a chemotherapeutic drug for a broad spectrum of cancers, but its usage was hampered because of being highly nephrotoxic. Cisplatin-induced AKI is commonly seen clinically, and it also serves as a well-established prototypic model for laboratory investigations relevant to acute nephropathy affecting especially the tubular compartment. Literature reports over a period of three decades have indicated that there are multiple types of RCDs, including apoptosis, necroptosis, pyroptosis, ferroptosis, and mitochondrial permeability transition-mediated necrosis, and some of them are pertinent to the pathogenesis of cisplatin-induced AKI. Interestingly, myo-inositol metabolism, a vital biological process that is largely restricted to the kidney, seems to be relevant to the pathogenesis of certain forms of RCDs. A comprehensive understanding of RCDs in cisplatin-induced AKI and their relevance to myo-inositol homeostasis may yield novel therapeutic targets for the amelioration of cisplatin-related nephropathy.
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Affiliation(s)
- Fei Deng
- Department of Urology, The Second Xiangya Hospital, Central South University, Changsha, China
- Department of Pathology, Northwestern University, Chicago, Illinois
- Department of Medicine, Northwestern University, Chicago, Illinois
| | - Xiaoping Zheng
- Department of Pathology, Northwestern University, Chicago, Illinois
- Department of Medicine, Northwestern University, Chicago, Illinois
- Department of Urology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Isha Sharma
- Department of Pathology, Northwestern University, Chicago, Illinois
- Department of Medicine, Northwestern University, Chicago, Illinois
| | - Yingbo Dai
- Department of Urology, The Third Xiangya Hospital, Central South University, Changsha, China
- Department of Urology, The Fifth Affiliated Hospital of Sun Yet-Sen University, Zhuhai, China
| | - Yinhuai Wang
- Department of Urology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Yashpal S Kanwar
- Department of Pathology, Northwestern University, Chicago, Illinois
- Department of Medicine, Northwestern University, Chicago, Illinois
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549
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Liu Y, Wu H, Jing J, Li H, Dong S, Meng Q. Downregulation of hsa_circ_0001836 Induces Pyroptosis Cell Death in Glioma Cells via Epigenetically Upregulating NLRP1. Front Oncol 2021; 11:622727. [PMID: 33869006 PMCID: PMC8044449 DOI: 10.3389/fonc.2021.622727] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 03/08/2021] [Indexed: 12/21/2022] Open
Abstract
Background It has been shown that circular RNAs (circRNAs) play a vital role in the progression of glioma. Recently, hsa_circ_0001836 was found to be upregulated in glioma tissues, but the role of hsa_circ_0001836 in glioma remains unclear. Methods EdU staining and flow cytometry assays were used to measure the viability and death of glioma cells. In addition, scanning electron microscopy (SEM) was used to observe the morphology of cells undergoing cell death. Results Hsa_circ_0001836 expression was upregulated in U251MG and SHG-44 cells. In addition, hsa_circ_0001836 knockdown significantly reduced the viability and proliferation of U251MG and SHG-44 cells. Moreover, hsa_circ_0001836 knockdown markedly induced the pyroptosis of U251MG and SHG-44 cells, evidenced by the increased expressions of NLRP1, cleaved caspase 1 and GSDMD-N. Meanwhile, methylation specific PCR (MSP) results indicated that hsa_circ_0001836 knockdown epigenetically increased NLRP1 expression via mediating DNA demethylation of NLRP1 promoter region. Furthermore, downregulation of hsa_circ_0001836 notably induced pyroptosis and inhibited tumor growth in a mouse xenograft model of glioma. Conclusion Collectively, hsa_circ_0001836 knockdown could induce pyroptosis cell death in glioma cells in vitro and in vivo via epigenetically upregulating NLRP1 expression. These findings suggested that hsa_circ_0001836 may serve as a potential therapeutic target for the treatment of glioma.
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Affiliation(s)
- Yong Liu
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Hao Wu
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Jiangpeng Jing
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Huanfa Li
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Shan Dong
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Qiang Meng
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
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550
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TLR4-NLRP3-GSDMD-Mediated Pyroptosis Plays an Important Role in Aggravated Liver Injury of CD38 -/- Sepsis Mice. J Immunol Res 2021; 2021:6687555. [PMID: 33860064 PMCID: PMC8026301 DOI: 10.1155/2021/6687555] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 02/21/2021] [Accepted: 03/05/2021] [Indexed: 02/08/2023] Open
Abstract
Clinically, severe bacterial infection can cause septicemia and multiple organ dysfunction syndrome, especially liver injury. CD38 is closely related to many inflammatory pathways, but its role in liver injury caused by bacterial infection remains unclear. The purpose of this study is to discuss the specific role of CD38 in bacterial liver injury. Eight-week-old male C57BL/6 mice (WT, CD38−/− and CD38−/−TLR4mut) were used and stimulated with Escherichia coli (ATCC25922) or PBS, intraperitoneally. After 3 hours of bacterial stimulation, serum was collected to detect ALT and AST concentration, and liver tissue was harvested for hematoxylin and eosin staining and bacterial culture. The mRNA expressions of TLR4, NLRP3, IL-1β, IL-18, and GSDMD were quantitatively determined by RT-qPCR. The expressions of TLR4, MyD88, TRIF, NF-κB p65, NLRP3, GSDMD, and cytokines were detected by Western blot. The expression and localization of ERK1/2 were detected by immunohistochemistry and Western blot. The results showed that bacterial stimulation could upregulate the expression of inflammatory cytokines, leading to hepatic dysfunction. Moreover, bacterial stimulation of CD38-deficient mice can aggravate the inflammatory response, the expressions of TLR4, NF-κB, and ERK1/2 were significantly increased, and the biomarkers related to pyroptosis also manifested more obvious pyroptosis. However, TLR4 mutation significantly alleviated inflammation and pyroptosis in the liver caused by bacteria, on the basis of CD38 deficiency. Overall, CD38 knockout exacerbates bacteria-induced liver damage through TLR4-NLRP3-GSDMD-mediated pyroptosis.
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