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Tan X, Xu S, Zeng Y, Qin Z, Yu F, Jiang H, Xu H, Li X, Wang X, Zhang G, Ma B, Zhang T, Fan J, Bo X, Kang P, Tang J, Fan H, Zhou Y. Identification of diagnostic signature and immune infiltration for ischemic cardiomyopathy based on cuproptosis-related genes through bioinformatics analysis and experimental validation. Int Immunopharmacol 2024; 138:112574. [PMID: 38971104 DOI: 10.1016/j.intimp.2024.112574] [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: 03/10/2024] [Revised: 06/12/2024] [Accepted: 06/25/2024] [Indexed: 07/08/2024]
Abstract
BACKGROUND Ischemic cardiomyopathy (IC) is primarily due to long-term ischemia/hypoxia of the coronary arteries, leading to impaired cardiac contractile or diastolic function. A new form of cell death induced by copper, called "cuproptosis" is related to the development and progression of multiple diseases. The cuproptosis-related gene (CuGs) plays an important role in acute myocardial infarction, while the specific mechanisms of CuGs in ischemic cardiomyopathy remain unclear. METHODS The expressions of CuGs and their immune characteristics were analyzed with the IC datasets obtained from the Gene Expression Omnibus, namely GSE5406 and GSE57338, identifying core genes associated with IC development. By comparing RF, SVM, GLM and XGB models, the optimal machine learning model was selected. The expression of marker genes was validated based on the GSE57345, GSE48166 and GSE42955 datasets. Construct a CeRNA network based on core genes. Therapeutic chemiacals targeting core genes were acquired using the CTD database, and molecular docking was performed using Autodock vina software. By ligating the left anterior descending (LAD) coronary artery, an IC mouse model is established, and core genes were experimentally validated using Western blot (WB) and immunohistochemistry (IHC) methods. RESULTS We identified 14 CuGs closely associated with the onset of IC. The SVM model exhibited superior discriminative power (AUC = 0.914), with core genes being DLST, ATP7B, FDX1, SLC31A1 and DLAT. Core genes were validated on the GSE42955, GSE48166 and GSE57345 datasets, showing excellent performance (AUC = 0.943, AUC = 0.800, and AUC = 0.932). The CeRNA network consists of 218 nodes and 264 lines, including 5 core diagnostic genes, 52 miRNAs, and 161 lncRNAs. Chemicals predictions indicated 8 chemicals have therapeutic effects on the core diagnostic genes, with benzo(a)pyrene molecular docking showing the highest affinity (-11.3 kcal/mol). Compared to the normal group, the IC group,which was established by LAD ligation, showed a significant decrease in LVEF as indicated by cardiac ultrasound, and increased fibrosis as shown by MASSON staining, WB results suggest increased expression of DLST and ATP7B, and decreased expression of FDX1, SLC31A1 and DLAT in the myocardial ischemic area (p < 0.05), which was also confirmed by IHC in tissue sections. CONCLUSION In summary, this study comprehensively revealed that DLST, ATP7B, FDX1, SLC31A1 and DLAT could be identified as potential immunological biomarkers in IC, and validated through an IC mouse model, providing valuable insights for future research into the mechanisms of CuGs and its diagnostic value to IC.
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Affiliation(s)
- Xin Tan
- Department of Cardiology, The Fourth Affiliated Hospital of Soochow University, Suzhou Dushu Lake Hospital, Medical Center of Soochow University, Suzhou 215000, China; Institute for Hypertension, Soochow University, Suzhou 215000, China
| | - Shuai Xu
- Department of Cardiology, The Fourth Affiliated Hospital of Soochow University, Suzhou Dushu Lake Hospital, Medical Center of Soochow University, Suzhou 215000, China; Institute for Hypertension, Soochow University, Suzhou 215000, China
| | - Yiyao Zeng
- Department of Cardiology, The Fourth Affiliated Hospital of Soochow University, Suzhou Dushu Lake Hospital, Medical Center of Soochow University, Suzhou 215000, China; Institute for Hypertension, Soochow University, Suzhou 215000, China
| | - Zhen Qin
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China; Henan Province Key Laboratory of Cardiac Injury and Repair, Zhengzhou 450052, China; Henan Province Clinical Research Center for Cardiovascular Diseases, Zhengzhou 450052, China
| | - Fengyi Yu
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China; Henan Province Key Laboratory of Cardiac Injury and Repair, Zhengzhou 450052, China; Henan Province Clinical Research Center for Cardiovascular Diseases, Zhengzhou 450052, China
| | - Hezi Jiang
- Department of Cardiology, The Fourth Affiliated Hospital of Soochow University, Suzhou Dushu Lake Hospital, Medical Center of Soochow University, Suzhou 215000, China; Institute for Hypertension, Soochow University, Suzhou 215000, China
| | - Hui Xu
- Department of Cardiology, The Fourth Affiliated Hospital of Soochow University, Suzhou Dushu Lake Hospital, Medical Center of Soochow University, Suzhou 215000, China; Institute for Hypertension, Soochow University, Suzhou 215000, China
| | - Xian Li
- Department of Cardiology, The Fourth Affiliated Hospital of Soochow University, Suzhou Dushu Lake Hospital, Medical Center of Soochow University, Suzhou 215000, China; Institute for Hypertension, Soochow University, Suzhou 215000, China
| | - Xiangyu Wang
- Department of Cardiology, The Fourth Affiliated Hospital of Soochow University, Suzhou Dushu Lake Hospital, Medical Center of Soochow University, Suzhou 215000, China; Institute for Hypertension, Soochow University, Suzhou 215000, China
| | - Ge Zhang
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China; Henan Province Key Laboratory of Cardiac Injury and Repair, Zhengzhou 450052, China; Henan Province Clinical Research Center for Cardiovascular Diseases, Zhengzhou 450052, China
| | - Bin Ma
- Luoyang Central Hospital Affiliated of Zhengzhou University, Luoyang 471009, China
| | - Ting Zhang
- Department of Cardiology, The Second People's Hospital of Hefei, Hefei Hospital Affiliated to Ahhui Medical University, Hefei 230011, China
| | - Jili Fan
- Department of Cardiovascular Disease, Taihe County People's Hospital, Fuyang 236600, China
| | - Xiaohong Bo
- Department of Cardiovascular Disease, Taihe County People's Hospital, Fuyang 236600, China
| | - Pinfang Kang
- Department of Cardiovascular Disease, the First Affiliated Hospital of Bengbu Medical University, Bengbu 233000, China
| | - Junnan Tang
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China; Henan Province Key Laboratory of Cardiac Injury and Repair, Zhengzhou 450052, China; Henan Province Clinical Research Center for Cardiovascular Diseases, Zhengzhou 450052, China
| | - Huimin Fan
- Department of Cardiology, The Fourth Affiliated Hospital of Soochow University, Suzhou Dushu Lake Hospital, Medical Center of Soochow University, Suzhou 215000, China; Center of Translational Medicine and Clinical Laboratory, The Fourth Affiliated Hospital to Soochow University, Suzhou Dushu Lake Hospital, Suzhou 215028, China
| | - Yafeng Zhou
- Department of Cardiology, The Fourth Affiliated Hospital of Soochow University, Suzhou Dushu Lake Hospital, Medical Center of Soochow University, Suzhou 215000, China; Institute for Hypertension, Soochow University, Suzhou 215000, China.
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Vassilopoulou E, Venter C, Roth-Walter F. Malnutrition and Allergies: Tipping the Immune Balance towards Health. J Clin Med 2024; 13:4713. [PMID: 39200855 PMCID: PMC11355500 DOI: 10.3390/jcm13164713] [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: 07/22/2024] [Revised: 08/04/2024] [Accepted: 08/05/2024] [Indexed: 09/02/2024] Open
Abstract
Malnutrition, which includes macro- and micronutrient deficiencies, is common in individuals with allergic dermatitis, food allergies, rhinitis, and asthma. Prolonged deficiencies of proteins, minerals, and vitamins promote Th2 inflammation, setting the stage for allergic sensitization. Consequently, malnutrition, which includes micronutrient deficiencies, fosters the development of allergies, while an adequate supply of micronutrients promotes immune cells with regulatory and tolerogenic phenotypes. As protein and micronutrient deficiencies mimic an infection, the body's innate response limits access to these nutrients by reducing their dietary absorption. This review highlights our current understanding of the physiological functions of allergenic proteins, iron, and vitamin A, particularly regarding their reduced bioavailability under inflamed conditions, necessitating different dietary approaches to improve their absorption. Additionally, the role of most allergens as nutrient binders and their involvement in nutritional immunity will be briefly summarized. Their ability to bind nutrients and their close association with immune cells can trigger exaggerated immune responses and allergies in individuals with deficiencies. However, in nutrient-rich conditions, these allergens can also provide nutrients to immune cells and promote health.
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Affiliation(s)
- Emilia Vassilopoulou
- Department of Nutritional Sciences and Dietetics, School of Health Sciences, International Hellenic University, 57400 Thessaloniki, Greece
- Department of Clinical Sciences and Community Health, Univertià degli Studi die Milano, 20122 Milan, Italy
| | - Carina Venter
- Pediatrics, Section of Allergy & Immunology, University of Colorado Denver School of Medicine, Children’s Hospital Colorado, Box B518, Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Franziska Roth-Walter
- Messerli Research Institute, Department of Interdisciplinary Life Sciences, University of Veterinary Medicine Vienna, Medical University of Vienna and University of Vienna, 1210 Vienna, Austria
- Institute of Pathophysiology and Allergy Research, Center of Pathophysiology, Infectiology and Immunology, Medical University of Vienna, 1090 Vienna, Austria
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Roth-Walter F, Berni Canani R, O'Mahony L, Peroni D, Sokolowska M, Vassilopoulou E, Venter C. Nutrition in chronic inflammatory conditions: Bypassing the mucosal block for micronutrients. Allergy 2024; 79:353-383. [PMID: 38084827 DOI: 10.1111/all.15972] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 11/14/2023] [Accepted: 11/27/2023] [Indexed: 02/01/2024]
Abstract
Nutritional Immunity is one of the most ancient innate immune responses, during which the body can restrict nutrients availability to pathogens and restricts their uptake by the gut mucosa (mucosal block). Though this can be a beneficial strategy during infection, it also is associated with non-communicable diseases-where the pathogen is missing; leading to increased morbidity and mortality as micronutritional uptake and distribution in the body is hindered. Here, we discuss the acute immune response in respect to nutrients, the opposing nutritional demands of regulatory and inflammatory cells and particularly focus on some nutrients linked with inflammation such as iron, vitamins A, Bs, C, and other antioxidants. We propose that while the absorption of certain micronutrients is hindered during inflammation, the dietary lymph path remains available. As such, several clinical trials investigated the role of the lymphatic system during protein absorption, following a ketogenic diet and an increased intake of antioxidants, vitamins, and minerals, in reducing inflammation and ameliorating disease.
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Affiliation(s)
- Franziska Roth-Walter
- Comparative Medicine, The Interuniversity Messerli Research Institute of the University of Veterinary Medicine Vienna, Medical University Vienna and University Vienna, Vienna, Austria
- Institute of Pathophysiology and Allergy Research, Center of Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Roberto Berni Canani
- Department of Translational Medical Science and ImmunoNutritionLab at CEINGE-Advanced Biotechnologies, University of Naples "Federico II", Naples, Italy
| | - Liam O'Mahony
- Department of Medicine, School of Microbiology, APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Diego Peroni
- Section of Paediatrics, Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Milena Sokolowska
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zürich, Davos, Switzerland
- Christine Kühne - Center for Allergy Research and Education (CK-CARE), Davos, Switzerland
| | - Emilia Vassilopoulou
- Pediatric Area, Fondazione IRCCS Ca' Granda-Ospedale Maggiore Policlinico, Milan, Italy
- Department of Nutritional Sciences and Dietetics, International Hellenic University, Thessaloniki, Greece
| | - Carina Venter
- Children's Hospital Colorado, University of Colorado, Aurora, Colorado, USA
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Guo L, Pei H, Yang Y, Kong Y. Betulinic acid regulates tumor-associated macrophage M2 polarization and plays a role in inhibiting the liver cancer progression. Int Immunopharmacol 2023; 122:110614. [PMID: 37423159 DOI: 10.1016/j.intimp.2023.110614] [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: 05/26/2023] [Revised: 07/02/2023] [Accepted: 07/03/2023] [Indexed: 07/11/2023]
Abstract
OBJECTIVE To investigate the regulatory role and mechanism of betulinic acid (BET) in tumor-associated M2 macrophage polarization. METHODS For in vitro experiments, RAW246.7 and J774A.1 cells were used, and differentiation of M2 macrophages was induced using recombinant interleukin-4/13. The levels of M2 cell marker cytokines were measured, and the proportion of F4/80+CD206+ cells was evaluated using flow cytometry. Furthermore, STAT6 signaling was detected, and H22 and RAW246.7 cells were cocultured to assess the effect of BET on M2 macrophage polarization. Changes in the malignant behavior of H22 cells after coculturing were observed and a tumor-bearing mouse model was constructed to determine CD206 cell infiltration after BET intervention. RESULTS In vitro experiments showed that BET inhibited M2 macrophage polarization and phospho-STAT6 signal modification. Moreover, the ability to promote the malignant behavior of H22 cells was reduced in BET-treated M2 macrophages. Furthermore, in vivo experiments indicated that BET decreased M2 macrophage polarization and infiltration in the microenvironment of liver cancer. BET was noted to predominantly bind to the STAT6 site to inhibit STAT6 phosphorylation. CONCLUSION BET bound chiefly to STAT6 to inhibit STAT6 phosphorylation and decrease M2 polarization in the microenvironment of liver cancer. These findings suggest that BET exerts an antitumor effect by modulating M2 macrophage function.
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Affiliation(s)
- Li Guo
- Department of Center Laboratory, The Second Affiliated Hospital of Jiaxing University, China.
| | - Hongyan Pei
- College of Chinese Medicinal Materials, Jilin Agricultural University, Changchun 130118, China.
| | - Yi Yang
- Department of Pharmacy, The Second Affiliated Hospital of Jiaxing University, China.
| | - Yun Kong
- Department of Pharmacy, The Second Affiliated Hospital of Jiaxing University, China.
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