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Tindall RR, Yang Y, Hernandez I, Qin A, Li J, Zhang Y, Gomez TH, Younes M, Shen Q, Bailey-Lundberg JM, Zhao Z, Kraushaar D, Castro P, Cao Y, Zheng WJ, Ko TC. Aging- and alcohol-associated spatial transcriptomic signature in mouse acute pancreatitis reveals heterogeneity of inflammation and potential pathogenic factors. J Mol Med (Berl) 2024; 102:1051-1061. [PMID: 38940937 PMCID: PMC11269349 DOI: 10.1007/s00109-024-02460-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 03/15/2024] [Accepted: 06/07/2024] [Indexed: 06/29/2024]
Abstract
The rapidly aging population is consuming more alcohol, leading to increased alcohol-associated acute pancreatitis (AAP) with high mortality. However, the mechanisms remain undefined, and currently there are no effective therapies available. This study aims to elucidate aging- and alcohol-associated spatial transcriptomic signature by establishing an aging AAP mouse model and applying Visium spatial transcriptomics for understanding of the mechanisms in the context of the pancreatic tissue. Upon alcohol diet feeding and caerulein treatment, aging mice (18 months) developed significantly more severe AAP with 5.0-fold increase of injury score and 2.4-fold increase of amylase compared to young mice (3 months). Via Visium spatial transcriptomics, eight distinct tissue clusters were revealed from aggregated transcriptomes of aging and young AAP mice: five acinar, two stromal, and one islet, which were then merged into three clusters: acinar, stromal, and islet for the comparative analysis. Compared to young AAP mice, > 1300 differentially expressed genes (DEGs) and approximately 3000 differentially regulated pathways were identified in aging AAP mice. The top five DEGs upregulated in aging AAP mice include Mmp8, Ppbp, Serpina3m, Cxcl13, and Hamp with heterogeneous distributions among the clusters. Taken together, this study demonstrates spatial heterogeneity of inflammatory processes in aging AAP mice, offering novel insights into the mechanisms and potential drivers for AAP development. KEY MESSAGES: Mechanisms regarding high mortality of AAP in aging remain undefined. An aging AAP mouse model was developed recapturing clinical exhibition in humans. Spatial transcriptomics identified contrasted DEGs in aging vs. young AAP mice. Top five DEGs were Mmp8, Ppbp, Serpina3m, Cxcl13, and Hamp in aging vs. young AAP mice. Our findings shed insights for identification of molecular drivers in aging AAP.
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Affiliation(s)
- Rachel R Tindall
- Department of Surgery, UTHealth at Houston, Houston, TX, 77030, USA
| | - Yuntao Yang
- McWilliams School of Biomedical Informatics, UTHealth at Houston, Houston, TX, 77030, USA
| | | | - Amy Qin
- Department of Surgery, UTHealth at Houston, Houston, TX, 77030, USA
| | - Jiajing Li
- Department of Surgery, UTHealth at Houston, Houston, TX, 77030, USA
| | - Yinjie Zhang
- Department of Surgery, UTHealth at Houston, Houston, TX, 77030, USA
| | - Thomas H Gomez
- Center for Laboratory Animal Medicine and Care, UTHealth at Houston, Houston, TX, 77030, USA
| | - Mamoun Younes
- Department of Pathology, George Washington University School of Medicine and Health Sciences, Washington, DC, 20037, USA
| | - Qiang Shen
- Department of Interdisciplinary Oncology, Louisiana State Univ. Health Sciences Center, New Orleans, LA, 70112, USA
| | - Jennifer M Bailey-Lundberg
- Department of Anesthesiology, Critical Care and Pain Medicine, UTHealth at Houston, Houston, TX, 77030, USA
| | - Zhongming Zhao
- Center for Precision Health, McWilliams School of Biomedical Informatics, UTHealth at Houston, Houston, TX, 77030, USA
| | - Daniel Kraushaar
- Genomic and RNA Profiling Core, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Patricia Castro
- Human Tissue Acquisition & Pathology Core, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Yanna Cao
- Department of Surgery, UTHealth at Houston, Houston, TX, 77030, USA.
| | - W Jim Zheng
- McWilliams School of Biomedical Informatics, UTHealth at Houston, Houston, TX, 77030, USA.
| | - Tien C Ko
- Department of Surgery, UTHealth at Houston, Houston, TX, 77030, USA.
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Zhang T, Cui Y, Jiang S, Jiang L, Song L, Huang L, Li Y, Yao J, Li M. Shared genetic correlations between kidney diseases and sepsis. Front Endocrinol (Lausanne) 2024; 15:1396041. [PMID: 39086896 PMCID: PMC11288879 DOI: 10.3389/fendo.2024.1396041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Accepted: 07/02/2024] [Indexed: 08/02/2024] Open
Abstract
Background Clinical studies have indicated a comorbidity between sepsis and kidney diseases. Individuals with specific mutations that predispose them to kidney conditions are also at an elevated risk for developing sepsis, and vice versa. This suggests a potential shared genetic etiology that has not been fully elucidated. Methods Summary statistics data on exposure and outcomes were obtained from genome-wide association meta-analysis studies. We utilized these data to assess genetic correlations, employing a pleiotropy analysis method under the composite null hypothesis to identify pleiotropic loci. After mapping the loci to their corresponding genes, we conducted pathway analysis using Generalized Gene-Set Analysis of GWAS Data (MAGMA). Additionally, we utilized MAGMA gene-test and eQTL information (whole blood tissue) for further determination of gene involvement. Further investigation involved stratified LD score regression, using diverse immune cell data, to study the enrichment of SNP heritability in kidney-related diseases and sepsis. Furthermore, we employed Mendelian Randomization (MR) analysis to investigate the causality between kidney diseases and sepsis. Results In our genetic correlation analysis, we identified significant correlations among BUN, creatinine, UACR, serum urate, kidney stones, and sepsis. The PLACO analysis method identified 24 pleiotropic loci, pinpointing a total of 28 nearby genes. MAGMA gene-set enrichment analysis revealed a total of 50 pathways, and tissue-specific analysis indicated significant enrichment of five pairs of pleiotropic results in kidney tissue. MAGMA gene test and eQTL information (whole blood tissue) identified 33 and 76 pleiotropic genes, respectively. Notably, genes PPP2R3A for BUN, VAMP8 for UACR, DOCK7 for creatinine, and HIBADH for kidney stones were identified as shared risk genes by all three methods. In a series of immune cell-type-specific enrichment analyses of pleiotropy, we identified a total of 37 immune cells. However, MR analysis did not reveal any causal relationships among them. Conclusions This study lays the groundwork for shared etiological factors between kidney and sepsis. The confirmed pleiotropic loci, shared pathogenic genes, and enriched pathways and immune cells have enhanced our understanding of the multifaceted relationships among these diseases. This provides insights for early disease intervention and effective treatment, paving the way for further research in this field.
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Affiliation(s)
- Tianlong Zhang
- Department of Critical Care Medicine, The Fourth Affiliated Hospital of School of Medicine, and International School of Medicine, International Institutes of Medicine, Zhejiang University, Yiwu, China
| | - Ying Cui
- Department of Critical Care Medicine, The Fourth Affiliated Hospital of School of Medicine, and International School of Medicine, International Institutes of Medicine, Zhejiang University, Yiwu, China
| | - Siyi Jiang
- Department of Critical Care Medicine, The Fourth Affiliated Hospital of School of Medicine, and International School of Medicine, International Institutes of Medicine, Zhejiang University, Yiwu, China
| | - Lu Jiang
- Department of Critical Care Medicine, The Fourth Affiliated Hospital of School of Medicine, and International School of Medicine, International Institutes of Medicine, Zhejiang University, Yiwu, China
| | - Lijun Song
- Department of Critical Care Medicine, The Fourth Affiliated Hospital of School of Medicine, and International School of Medicine, International Institutes of Medicine, Zhejiang University, Yiwu, China
| | - Lei Huang
- Department of Critical Care Medicine, The Fourth Affiliated Hospital of School of Medicine, and International School of Medicine, International Institutes of Medicine, Zhejiang University, Yiwu, China
| | - Yong Li
- Department of Critical Care Medicine, The Fourth Affiliated Hospital of School of Medicine, and International School of Medicine, International Institutes of Medicine, Zhejiang University, Yiwu, China
| | - Jiali Yao
- Department of Critical Care Medicine, Jinhua Hospital Affiliated to Zhejiang University, Jinhua, Zhejiang, China
| | - Min Li
- Department of Critical Care Medicine, The Fourth Affiliated Hospital of School of Medicine, and International School of Medicine, International Institutes of Medicine, Zhejiang University, Yiwu, China
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Li C, Abdurehim A, Zhao S, Sun Q, Xu J, Xie J, Zhang Y. Research on the potential mechanism of Deapioplatycodin D against pulmonary fibrosis based on bioinformatics and experimental verification. Eur J Pharmacol 2024; 974:176603. [PMID: 38679121 DOI: 10.1016/j.ejphar.2024.176603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 03/27/2024] [Accepted: 04/18/2024] [Indexed: 05/01/2024]
Abstract
BACKGROUND Pulmonary fibrosis (PF) is a group of respiratory diseases that are extremely complex and challenging to treat. Due to its high mortality rate and short survival, it's often referred to as a "tumor-like disease" that poses a serious threat to human health. OBJECTIVE We aimed validate the potential of Deapioplatycodin D (DPD) to against PF and clarify the underlying mechanism of action of DPD for the treatment of PF based on bioinformatics and experimental verification. This finding provides a basis for the development of safe and effective therapeutic PF drugs based on DPD. METHODS We used LPS-induced early PF rats as a PF model to test the overall efficacy of DPD in vivo. Then, A variety of bioinformatics methods, such as WGCNA, LASSO algorithm and immune cell infiltration (ICI), were applied to analyze the gene microarray related to PF obtained from Gene Expression Omnibus (GEO) to obtained key targets of PF. Finally, an in vitro PF model was constructed based on BEAS-2B cells while incorporating rat lung tissues to validate the regulatory effects of DPD on critical genes. RESULTS DPD can effectively alleviate inflammatory and fibrotic markers in rat lungs. WGCNA analysis resulted in a total of six expression modules, with the brown module having the highest correlation with PF. Subsequently, seven genes were acquired by intersecting the genes in the brown module with DEGs. Five key genes were identified as potential biomarkers of PF by LASSO algorithm and validation dataset verification analysis. In the ICI analysis, infiltration of activated B cell, immature B cell and natural killer cells were found to be more crucial in PF. Ultimately, it was observed that DPD could modulate key genes to achieve anti-PF effects. CONCLUSION In short, these comprehensive analysis methods were employed to identify critical biomarkers closely related to PF, which helps to elucidate the pathogenesis and potential immunotherapy targets of PF. It also provides essential support for the potential of DPD against PF.
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Affiliation(s)
- Chao Li
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin, China.
| | - Aliya Abdurehim
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin, China.
| | - Shuang Zhao
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
| | - Qing Sun
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin, China.
| | - Jiawen Xu
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin, China.
| | - Junbo Xie
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin, China.
| | - Yanqing Zhang
- Biotechnology & Food Science College, Tianjin University of Commerce, Tianjin, 300134, China.
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Nguyen A, Mustafa AHM, Leydecker AK, Halilovic M, Murr J, Butter F, Krämer OH. The protein phosphatase-2A subunit PR130 is involved in the formation of cytotoxic protein aggregates in pancreatic ductal adenocarcinoma cells. Cell Commun Signal 2024; 22:217. [PMID: 38570831 PMCID: PMC10993613 DOI: 10.1186/s12964-024-01597-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Accepted: 03/26/2024] [Indexed: 04/05/2024] Open
Abstract
As a major source of cellular serine and threonine phosphatase activity, protein phosphatase-2A (PP2A) modulates signaling pathways in health and disease. PP2A complexes consist of catalytic, scaffolding, and B-type subunits. Seventeen PP2A B-type subunits direct PP2A complexes to selected substrates. It is ill-defined how PP2A B-type subunits determine the growth and drug responsiveness of tumor cells. Pancreatic ductal adenocarcinoma (PDAC) is a disease with poor prognosis. We analyzed the responses of murine and human mesenchymal and epithelial PDAC cells to the specific PP2A inhibitor phendione. We assessed protein levels by immunoblot and proteomics and cell fate by flow cytometry, confocal microscopy, and genetic manipulation. We show that murine mesenchymal PDAC cells express significantly higher levels of the PP2A B-type subunit PR130 than epithelial PDAC cells. This overexpression of PR130 is associated with a dependency of such metastasis-prone cells on the catalytic activity of PP2A. Phendione induces apoptosis and an accumulation of cytotoxic protein aggregates in murine mesenchymal and human PDAC cells. These processes occur independently of the frequently mutated tumor suppressor p53. Proteomic analyses reveal that phendione upregulates the chaperone HSP70 in mesenchymal PDAC cells. Inhibition of HSP70 promotes phendione-induced apoptosis and phendione promotes a proteasomal degradation of PR130. Genetic elimination of PR130 sensitizes murine and human PDAC cells to phendione-induced apoptosis and protein aggregate formation. These data suggest that the PP2A-PR130 complex dephosphorylates and thereby prevents the aggregation of proteins in tumor cells.
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Affiliation(s)
- Alexandra Nguyen
- Institute of Toxicology, University Medical Center of the Johannes Gutenberg University Mainz, Obere Zahlbacher St. 67, 55131, Mainz, Germany
| | - Al-Hassan M Mustafa
- Institute of Toxicology, University Medical Center of the Johannes Gutenberg University Mainz, Obere Zahlbacher St. 67, 55131, Mainz, Germany
- Department of Zoology, Faculty of Science, Aswan University, Aswan, Egypt
| | - Alessa K Leydecker
- Institute of Toxicology, University Medical Center of the Johannes Gutenberg University Mainz, Obere Zahlbacher St. 67, 55131, Mainz, Germany
| | - Melisa Halilovic
- Institute of Toxicology, University Medical Center of the Johannes Gutenberg University Mainz, Obere Zahlbacher St. 67, 55131, Mainz, Germany
| | - Janine Murr
- Medical Clinic and Polyclinic II, Klinikum Rechts Der Isar, Technical University Munich, 81675, Munich, Germany
| | - Falk Butter
- Institute of Molecular Biology (IMB), Ackermannweg 4, 55128, Mainz, Germany
- Federal Research Institute for Animal Health, Südufer 10, 17493, Greifswald, Insel Riems, Germany
| | - Oliver H Krämer
- Institute of Toxicology, University Medical Center of the Johannes Gutenberg University Mainz, Obere Zahlbacher St. 67, 55131, Mainz, Germany.
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Li B, Wang J, Zhao Y, Zou Y, Cao H, Jin H, Tao X, Mu M. Vitamin D3 reverses immune tolerance and enhances the cytotoxicity of effector T cells in coal pneumoconiosis. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 271:115972. [PMID: 38218105 DOI: 10.1016/j.ecoenv.2024.115972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 12/31/2023] [Accepted: 01/08/2024] [Indexed: 01/15/2024]
Abstract
Coal worker's pneumoconiosis (CWP) is a common occupational disease that coal miners are highly susceptible due to long-term exposure to coal dust particles (CDP). CWP can induce the accumulation of immune cells surrounding the bronchioles and alveoli in the lungs, resulting in pulmonary fibrosis and compromised immune function. Using single-cell RNA sequencing (scRNA-Seq), our previous studies disclose that CDP exposure triggers heterogeneity of transcriptional profiles in mouse pneumoconiosis, while Vitamin D3 (VitD3) supplementation reduces CDP-induced cytotoxicity; however, the mechanism by which how VitD3 regulates immune status in coal pneumoconiosis remains unclear. In this study, we elucidated the heterogeneity of pulmonary lymphocytes in mice exposed to CDP and demonstrated the therapeutic efficacy of VitD3 using scRNA-Seq dataset. The validation of key lymphocyte markers and their functional molecules was performed using immunofluorescence. The results demonstrated that VitD3 increased the number of naive T cells by modulating CD4 + T cell differentiation and decreased the number of Treg cells in CDP-exposed mice, thereby enhancing the cytotoxic activity of CD8 + effector T cells. These effects markedly alleviated lung fibrosis and symptoms. Taken together, the mechanism by which VitD3 regulates the functions of lymphocytes in CWP provides a new perspective for further research on the prevention and treatment of CWP.
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Affiliation(s)
- Bing Li
- Joint Research Center for Occupational Medicine and Health of IHM, Anhui University of Science and Technology, Huainan 232000, China; School of Public Health, Anhui University of Science and Technology, HeFei 230041, China; Key Laboratory of Industrial Dust Prevention and Control, Occupational Safety and Health, Ministry of Education, Anhui University of Science and Technology, Huainan 232000, China; Anhui Institute of Occupational Safety and Health, Anhui University of Science and Technology, Huainan 232000, China
| | - Jianhua Wang
- Joint Research Center for Occupational Medicine and Health of IHM, Anhui University of Science and Technology, Huainan 232000, China; School of Public Health, Anhui University of Science and Technology, HeFei 230041, China; Key Laboratory of Industrial Dust Prevention and Control, Occupational Safety and Health, Ministry of Education, Anhui University of Science and Technology, Huainan 232000, China; Anhui Institute of Occupational Safety and Health, Anhui University of Science and Technology, Huainan 232000, China; Cancer Institute, Shanghai Urological Cancer Institute, Fudan University Shanghai Cancer Center, Fudan University, Shanghai 200032, China.
| | - Yehong Zhao
- Joint Research Center for Occupational Medicine and Health of IHM, Anhui University of Science and Technology, Huainan 232000, China; School of Public Health, Anhui University of Science and Technology, HeFei 230041, China; Key Laboratory of Industrial Dust Prevention and Control, Occupational Safety and Health, Ministry of Education, Anhui University of Science and Technology, Huainan 232000, China; Anhui Institute of Occupational Safety and Health, Anhui University of Science and Technology, Huainan 232000, China
| | - Yuanjie Zou
- Joint Research Center for Occupational Medicine and Health of IHM, Anhui University of Science and Technology, Huainan 232000, China; School of Public Health, Anhui University of Science and Technology, HeFei 230041, China; Key Laboratory of Industrial Dust Prevention and Control, Occupational Safety and Health, Ministry of Education, Anhui University of Science and Technology, Huainan 232000, China; Anhui Institute of Occupational Safety and Health, Anhui University of Science and Technology, Huainan 232000, China
| | - Hangbing Cao
- Joint Research Center for Occupational Medicine and Health of IHM, Anhui University of Science and Technology, Huainan 232000, China; School of Public Health, Anhui University of Science and Technology, HeFei 230041, China; Key Laboratory of Industrial Dust Prevention and Control, Occupational Safety and Health, Ministry of Education, Anhui University of Science and Technology, Huainan 232000, China; Anhui Institute of Occupational Safety and Health, Anhui University of Science and Technology, Huainan 232000, China
| | - Haibo Jin
- Joint Research Center for Occupational Medicine and Health of IHM, Anhui University of Science and Technology, Huainan 232000, China; School of Public Health, Anhui University of Science and Technology, HeFei 230041, China; Key Laboratory of Industrial Dust Prevention and Control, Occupational Safety and Health, Ministry of Education, Anhui University of Science and Technology, Huainan 232000, China; Anhui Institute of Occupational Safety and Health, Anhui University of Science and Technology, Huainan 232000, China
| | - Xinrong Tao
- Joint Research Center for Occupational Medicine and Health of IHM, Anhui University of Science and Technology, Huainan 232000, China; School of Public Health, Anhui University of Science and Technology, HeFei 230041, China; Key Laboratory of Industrial Dust Prevention and Control, Occupational Safety and Health, Ministry of Education, Anhui University of Science and Technology, Huainan 232000, China; Anhui Institute of Occupational Safety and Health, Anhui University of Science and Technology, Huainan 232000, China.
| | - Min Mu
- Joint Research Center for Occupational Medicine and Health of IHM, Anhui University of Science and Technology, Huainan 232000, China; School of Public Health, Anhui University of Science and Technology, HeFei 230041, China; Key Laboratory of Industrial Dust Prevention and Control, Occupational Safety and Health, Ministry of Education, Anhui University of Science and Technology, Huainan 232000, China; Anhui Institute of Occupational Safety and Health, Anhui University of Science and Technology, Huainan 232000, China.
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Tan J, Chen M, Liu M, Chen A, Huang M, Chen X, Tian X, Chen W. Exosomal miR-192-5p secreted by bone marrow mesenchymal stem cells inhibits hepatic stellate cell activation and targets PPP2R3A. J Histotechnol 2023; 46:158-169. [PMID: 37226801 DOI: 10.1080/01478885.2023.2215151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 05/12/2023] [Indexed: 05/26/2023]
Abstract
Bone marrow mesenchymal stem cell (BSMC)-derived extracellular vehicles (EVs) have a pivotal therapeutic potential in hepatic fibrosis (HF). Activation of hepatic stellate cells (HSCs) is the key mechanism in HF progression. Downregulation of miR-192-5p was previously observed in activated HSCs. Nonetheless, the functions of BSMC-derived exosomal miR-192-5p in activated HSCs remain unclear. In this study, transforming growth factor (TGF)-β1 was used to activate HSC-T6 cells to mimic HF in vitro. Characterization of BMSCs and BMSC-derived EVs was performed. Cell-counting kit-8 assay, flow cytometry, and western blotting revealed that TGF-β1 increased cell viability, promoted cell cycle progression, and induced upregulation of fibrosis markers in HSC-T6 cells. Overexpression of miR-192-5p or BMSC-derived exosomal miR-192-5p suppressed TGF-β1-triggered HSC-T6 cell activation. RT-qPCR revealed that protein phosphatase 2 regulatory subunit B'' alpha (PPP2R3A) was downregulated in miR-192-5p-overexpressed HSC-T6 cells. Luciferase reporter assay was used for verifying the relation between miR-192-5p and PPP2R3A, which showed that miR-192-5p targeted PPP2R3A in activated HSC-T6 cells. Collectively, BMSC-derived exosomal miR-192-5p targets PPP2R3A and inhibits activation of HSC-T6 cells.
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Affiliation(s)
- Jie Tan
- Department of Gastroenterology, Wuhan Third Hospital, Tongren Hospital of Wuhan University, Wuhan, China
| | - Mingtao Chen
- Department of Gastroenterology, Wuhan Third Hospital, Tongren Hospital of Wuhan University, Wuhan, China
| | - Meng Liu
- Department of Gastroenterology, Wuhan Third Hospital, Tongren Hospital of Wuhan University, Wuhan, China
| | - Aifang Chen
- Department of Gastroenterology, Wuhan Third Hospital, Tongren Hospital of Wuhan University, Wuhan, China
| | - Min Huang
- Department of Gastroenterology, Wuhan Third Hospital, Tongren Hospital of Wuhan University, Wuhan, China
| | - Xiaoli Chen
- Department of Gastroenterology, Wuhan Third Hospital, Tongren Hospital of Wuhan University, Wuhan, China
| | - Xia Tian
- Department of Gastroenterology, Wuhan Third Hospital, Tongren Hospital of Wuhan University, Wuhan, China
| | - Wei Chen
- Department of Gastroenterology, Wuhan Third Hospital, Tongren Hospital of Wuhan University, Wuhan, China
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7
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Herting JR, König JH, Hadova K, Heinick A, Müller FU, Pauls P, Seidl MD, Soppa C, Kirchhefer U. Hypercontractile cardiac phenotype in mice overexpressing the regulatory subunit PR72 of protein phosphatase 2A. Front Cardiovasc Med 2023; 10:1239555. [PMID: 37868783 PMCID: PMC10590119 DOI: 10.3389/fcvm.2023.1239555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 09/22/2023] [Indexed: 10/24/2023] Open
Abstract
Background The activity, localization, and substrate specificity of the protein phosphatase 2A (PP2A) heterotrimer are controlled by various regulatory B subunits. PR72 belongs to the B'' gene family and has been shown to be upregulated in human heart failure. However, little is known about the functions of PR72 in the myocardium. Methods To address this issue, we generated a transgenic mouse model with heart-specific overexpression of PP2A-PR72. Biochemical and physiological methods were used to determine contractility, Ca2+ cycling parameters, and protein phosphorylation. Results A 2.5-fold increase in PR72 expression resulted in moderate cardiac hypertrophy. Maximal ventricular pressure was increased in catheterized transgenic mice (TG) compared to wild-type (WT) littermates. This was accompanied by an increased shortening of sarcomere length and faster relaxation at the single-cell level in TG. In parallel with these findings, the peak amplitude of Ca2+ transients was increased, and the decay in intracellular Ca2+ levels was shortened in TG compared to WT. The changes in Ca2+ cycling in TG were also evident from an increase in the full duration and width at half maximum of Ca2+ sparks. Consistent with the contractile data, phosphorylation of phospholamban at threonine-17 was higher in TG hearts. The lower expression of the Na+/Ca2+ exchanger may also contribute to the hypercontractile state in transgenic myocardium. Conclusion Our results suggest that PP2A-PR72 plays an important role in regulating cardiac contractile function and Ca2+ cycling, indicating that the upregulation of PR72 in heart failure is an attempt to compensate functionally.
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Affiliation(s)
- Julius R. Herting
- Institut für Pharmakologie und Toxikologie, Universitätsklinikum Münster, Universität Münster, Münster, Germany
| | - Jule H. König
- Institut für Pharmakologie und Toxikologie, Universitätsklinikum Münster, Universität Münster, Münster, Germany
| | - Katarina Hadova
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University in Bratislava, Bratislava, Slovakia
| | - Alexander Heinick
- Institut für Pharmakologie und Toxikologie, Universitätsklinikum Münster, Universität Münster, Münster, Germany
| | - Frank U. Müller
- Institut für Pharmakologie und Toxikologie, Universitätsklinikum Münster, Universität Münster, Münster, Germany
| | - Paul Pauls
- Institut für Pharmakologie und Toxikologie, Universitätsklinikum Münster, Universität Münster, Münster, Germany
| | - Matthias D. Seidl
- Institut für Pharmakologie und Toxikologie, Universitätsklinikum Münster, Universität Münster, Münster, Germany
| | - Carolina Soppa
- Institut für Pharmakologie und Toxikologie, Universitätsklinikum Münster, Universität Münster, Münster, Germany
| | - Uwe Kirchhefer
- Institut für Pharmakologie und Toxikologie, Universitätsklinikum Münster, Universität Münster, Münster, Germany
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8
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Chen M, Wang J, Yuan M, Long M, Sun Y, Wang S, Luo W, Zhou Y, Zhang W, Jiang W, Chao J. AT2 cell-derived IgA trapped by the extracellular matrix in silica-induced pulmonary fibrosis. Int Immunopharmacol 2023; 122:110545. [PMID: 37390644 DOI: 10.1016/j.intimp.2023.110545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 06/14/2023] [Accepted: 06/18/2023] [Indexed: 07/02/2023]
Abstract
Pulmonary fibrosis is an interstitial lung disease caused by various factors such as exposure to workplace environmental contaminants, drugs, or X-rays. Epithelial cells are among the driving factors of pulmonary fibrosis. Immunoglobulin A (IgA), traditionally thought to be secreted by B cells, is an important immune factor involved in respiratory mucosal immunity. In the current study, we found that lung epithelial cells are involved in IgA secretion, which, in turn, promotes pulmonary fibrosis. Spatial transcriptomics and single-cell sequencing suggest that Igha transcripts were highly expressed in the fibrotic lesion areas of lungs from silica-treated mice. Reconstruction of B-cell receptor (BCR) sequences revealed a new cluster of AT2-like epithelial cells with a shared BCR and high expression of genes related to IgA production. Furthermore, the secretion of IgA by AT2-like cells was trapped by the extracellular matrix and aggravated pulmonary fibrosis by activating fibroblasts. Targeted blockade of IgA secretion by pulmonary epithelial cells may be a potential strategy for treating pulmonary fibrosis.
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Affiliation(s)
- Mengling Chen
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Zhongda Hospital, Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, China
| | - Jing Wang
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Zhongda Hospital, Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, China
| | - Mengqin Yuan
- Department of Biomedical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu, China
| | - Min Long
- Department of Biomedical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu, China
| | - Yuheng Sun
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Zhongda Hospital, Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, China
| | - Sha Wang
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Zhongda Hospital, Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, China
| | - Wei Luo
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Zhongda Hospital, Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, China
| | - Yun Zhou
- Department of Health Management, School of Health Science, West Yunnan University of Applied Sciences, Dali, Yunnan, China
| | - Wei Zhang
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Zhongda Hospital, Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, China
| | - Wei Jiang
- Department of Biomedical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu, China.
| | - Jie Chao
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Zhongda Hospital, Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, China; Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu, China; School of Medicine, Xizang Minzu University, Xianyang, Shanxi, China.
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9
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Zhang X, Shi X, Xie F, Liu Y, Wei X, Cai Y, Chao J. Dissecting pulmonary fibroblasts heterogeneity in lung development, health and diseases. Heliyon 2023; 9:e19428. [PMID: 37674845 PMCID: PMC10477496 DOI: 10.1016/j.heliyon.2023.e19428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 08/11/2023] [Accepted: 08/22/2023] [Indexed: 09/08/2023] Open
Abstract
Lung fibroblasts are the major components in the connective tissue of the pulmonary interstitium and play essential roles in the developing of postnatal lung, synthesizing the extracellular matrix and maintaining the integrity of the lung architecture. Fibroblasts are activated in various disease conditions and exhibit functional heterogeneities according to their origin, spatial location, activated state and microenvironment. In recent years, advances in technology have enabled researchers to identify fibroblast subpopulations in both mouse and human. Here, we discuss pulmonary fibroblast heterogeneity, focusing on the developing, healthy and pathological lung conditions. We firstly review the expression profiles of fibroblasts during lung development, and then consider fibroblast diversity according to different anatomical sites of lung architecture. Subsequently, we discuss fibroblast heterogeneity in genetic lineage. Finally, we focus on how fibroblast heterogeneity may shed light on different pathological lung conditions such as fibrotic diseases, infectious diseases including COVID-19, and lung cancers. We emphasize the importance of comparative studies to illuminate the overlapping characteristics, expression profiles and signaling pathways of the fibroblast subpopulations across disease conditions, a better characterization of the functional complexity rather than the expression of a particular gene may have important therapeutic applications.
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Affiliation(s)
- Xinxin Zhang
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Zhongda Hospital, Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China
- Department of Histology and Embryology, School of Medicine, Southeast University, Nanjing 210009, PR China
| | - Xiaoni Shi
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Zhongda Hospital, Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China
| | - Feiyan Xie
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Zhongda Hospital, Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China
| | - Yaping Liu
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Zhongda Hospital, Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China
| | - Xinyan Wei
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Zhongda Hospital, Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China
| | - Yu Cai
- Jiangsu Key Laboratory of Molecular and Functional Imaging, Department of Radiology, Zhongda Hospital, Medical School of Southeast University, Nanjing 210009, China
| | - Jie Chao
- Jiangsu Provincial Key Laboratory of Critical Care Medicine, Zhongda Hospital, Department of Physiology, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China
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10
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Wang WJ, Chu LX, He LY, Zhang MJ, Dang KT, Gao C, Ge QY, Wang ZG, Zhao XW. Spatial transcriptomics: recent developments and insights in respiratory research. Mil Med Res 2023; 10:38. [PMID: 37592342 PMCID: PMC10433685 DOI: 10.1186/s40779-023-00471-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 07/24/2023] [Indexed: 08/19/2023] Open
Abstract
The respiratory system's complex cellular heterogeneity presents unique challenges to researchers in this field. Although bulk RNA sequencing and single-cell RNA sequencing (scRNA-seq) have provided insights into cell types and heterogeneity in the respiratory system, the relevant specific spatial localization and cellular interactions have not been clearly elucidated. Spatial transcriptomics (ST) has filled this gap and has been widely used in respiratory studies. This review focuses on the latest iterative technology of ST in recent years, summarizing how ST can be applied to the physiological and pathological processes of the respiratory system, with emphasis on the lungs. Finally, the current challenges and potential development directions are proposed, including high-throughput full-length transcriptome, integration of multi-omics, temporal and spatial omics, bioinformatics analysis, etc. These viewpoints are expected to advance the study of systematic mechanisms, including respiratory studies.
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Affiliation(s)
- Wen-Jia Wang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Liu-Xi Chu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Li-Yong He
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Ming-Jing Zhang
- Orthopaedic Bioengineering Research Group, Division of Surgery and Interventional Science, University College London, London, HA7 4LP, UK
| | - Kai-Tong Dang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Chen Gao
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Qin-Yu Ge
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Zhou-Guang Wang
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China.
| | - Xiang-Wei Zhao
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China.
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11
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Januska MN, Walsh MJ. Single-Cell RNA Sequencing Reveals New Basic and Translational Insights in the Cystic Fibrosis Lung. Am J Respir Cell Mol Biol 2023; 68:131-139. [PMID: 36194688 PMCID: PMC9986558 DOI: 10.1165/rcmb.2022-0038tr] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 10/04/2022] [Indexed: 02/03/2023] Open
Abstract
Cystic fibrosis (CF) is a multisystemic, autosomal recessive disorder caused by mutations in the CFTR (cystic fibrosis transmembrane conductance regulator) gene, with the majority of morbidity and mortality extending from lung disease. Single-cell RNA sequencing (scRNA-seq) has been leveraged in the lung and elsewhere in the body to articulate discrete cell populations, describing cell types, states, and lineages as well as their roles in health and disease. In this translational review, we provide an overview of the current applications of scRNA-seq to the study of the normal and CF lungs, allowing the beginning of a new cellular and molecular narrative of CF lung disease, and we highlight some of the future opportunities to further leverage scRNA-seq and complementary single-cell technologies in the study of CF as we bridge from scientific understanding to clinical application.
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Affiliation(s)
- Megan N. Januska
- Department of Pediatrics
- Department of Genetics and Genomic Sciences, and
| | - Martin J. Walsh
- Department of Pediatrics
- Department of Genetics and Genomic Sciences, and
- Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, New York, New York; and
- Mount Sinai Center for RNA Biology and Medicine, New York, New York
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