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Lin X, Shao H, Tang Y, Wang Q, Yang Z, Wu H, Xing T. High expression of circulating exosomal PD-L1 contributes to immune escape of hepatocellular carcinoma and immune clearance of chronic hepatitis B. Aging (Albany NY) 2024; 16:11373-11384. [PMID: 39028365 PMCID: PMC11315384 DOI: 10.18632/aging.206020] [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: 01/02/2024] [Accepted: 04/09/2024] [Indexed: 07/20/2024]
Abstract
OBJECTIVE To investigate the expression of programmed death ligand-1 (PD-L1) in circulating exosomes, and to define the role of exosomal PD-L1 in promoting immune escape mechanism during chronic hepatitis B infection (CHB) and related liver diseases. METHODS The levels of PD-L1 expressed in exosomes were detected by ELISA. CD8+T cells were sorted and cytotoxicity test was assessed by flow cytometry. PD-L1 protein expression in hepatocellular carcinoma (HCC) and normal adjacent tissues were detected by immunohistochemistry. RESULTS Circulating exosomal PD-L1 levels were significantly higher in patients with CHB and HCC than in healthy controls (F =7.46, P=0.001). Levels of CD107a on CD8+T cells in patients with CHB receiving PD-L1 blocking antibody were significantly lower than in patients receiving isotype blocking antibody (t = 4.96, P < 0.01). Levels of TNF-α in cell culture supernatants of the PD-L1 blocking antibody group were significantly higher than in the isotype blocking antibody group (t =5.92, P < 0.01). Compared with patients receiving isotype blocking antibody, levels of CD107a on CD8+T cells significantly increased in patients with HCC receiving anti-PD-L1 antibody (t = 3.51, P<0.05). Compared with adjacent tissues, the levels of PD-L1 protein expression in HCC tissues were slightly higher; however, no significant difference between the two groups was observed. CONCLUSIONS PD-L1 blockade in exosomes might promote the cytotoxic function of CD8+T cells and inhibit immune evasion during progression of HCC. Blocking PD-L1 in exosomes reduced the cytotoxic function of CD8+T cells in patients with CHB while enhancing the production of proinflammatory cytokines.
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Affiliation(s)
- Xiaoqing Lin
- Wenzhou Central Hospital, Dingli Clinical College of Wenzhou Medical University, Wenzhou Sixth People’s Hospital, Wenzhou, Zhejiang, China
| | - Hui Shao
- Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, Zhejiang, China
| | - Yongzhi Tang
- Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, Zhejiang, China
| | - Qiupeng Wang
- Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, Zhejiang, China
| | - Zhenyu Yang
- Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, Zhejiang, China
| | - Hongwei Wu
- Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, Zhejiang, China
| | - Tongjing Xing
- Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Linhai, Zhejiang, China
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Bakinowska E, Kiełbowski K, Boboryko D, Bratborska AW, Olejnik-Wojciechowska J, Rusiński M, Pawlik A. The Role of Stem Cells in the Treatment of Cardiovascular Diseases. Int J Mol Sci 2024; 25:3901. [PMID: 38612710 PMCID: PMC11011548 DOI: 10.3390/ijms25073901] [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: 02/11/2024] [Revised: 03/28/2024] [Accepted: 03/29/2024] [Indexed: 04/14/2024] Open
Abstract
Cardiovascular diseases (CVDs) are the leading cause of death and include several vascular and cardiac disorders, such as atherosclerosis, coronary artery disease, cardiomyopathies, and heart failure. Multiple treatment strategies exist for CVDs, but there is a need for regenerative treatment of damaged heart. Stem cells are a broad variety of cells with a great differentiation potential that have regenerative and immunomodulatory properties. Multiple studies have evaluated the efficacy of stem cells in CVDs, such as mesenchymal stem cells and induced pluripotent stem cell-derived cardiomyocytes. These studies have demonstrated that stem cells can improve the left ventricle ejection fraction, reduce fibrosis, and decrease infarct size. Other studies have investigated potential methods to improve the survival, engraftment, and functionality of stem cells in the treatment of CVDs. The aim of the present review is to summarize the current evidence on the role of stem cells in the treatment of CVDs, and how to improve their efficacy.
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Affiliation(s)
- Estera Bakinowska
- Department of Physiology, Pomeranian Medical University, 70-111 Szczecin, Poland; (E.B.); (K.K.); (D.B.); (J.O.-W.); (M.R.)
| | - Kajetan Kiełbowski
- Department of Physiology, Pomeranian Medical University, 70-111 Szczecin, Poland; (E.B.); (K.K.); (D.B.); (J.O.-W.); (M.R.)
| | - Dominika Boboryko
- Department of Physiology, Pomeranian Medical University, 70-111 Szczecin, Poland; (E.B.); (K.K.); (D.B.); (J.O.-W.); (M.R.)
| | | | - Joanna Olejnik-Wojciechowska
- Department of Physiology, Pomeranian Medical University, 70-111 Szczecin, Poland; (E.B.); (K.K.); (D.B.); (J.O.-W.); (M.R.)
| | - Marcin Rusiński
- Department of Physiology, Pomeranian Medical University, 70-111 Szczecin, Poland; (E.B.); (K.K.); (D.B.); (J.O.-W.); (M.R.)
| | - Andrzej Pawlik
- Department of Physiology, Pomeranian Medical University, 70-111 Szczecin, Poland; (E.B.); (K.K.); (D.B.); (J.O.-W.); (M.R.)
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Mardomi A, Mohammadi N, Ahmadzadeh F, Abediankenari S. CTLA4-Ig alleviates the allogeneic immune responses against insulin-producing cells in a murine model of cell transplantation. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2023; 396:3195-3206. [PMID: 37231171 DOI: 10.1007/s00210-023-02527-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 05/10/2023] [Indexed: 05/27/2023]
Abstract
The adoptive transfer of insulin-producing cells (IPCs) is one of the promising treatments for insulin-dependent diabetes mellitus. While the use of allogeneic cell resources is inevitable in the case of a series of patients, alloimmune responses are a major barrier ahead of the successful implementation of allogeneic therapeutic cells. This study is aimed at evaluating the potential of CTLA4-Ig, as an approved immunomodulatory biologic, in protecting the IPCs against allogeneic immune responses. The C57BL/6 and BALB/c mice were used to establish a murine model of allogeneic cell transplantation. The mouse bone-marrow-derived mesenchymal stem cells were in vitro differentiated into IPCs, and the in vitro as well as the in vivo immune responses against IPCs were evaluated in the presence and absence of CTLA4-Ig. The allogeneic IPCs induced the in vitro activation of CD4+ T-cells, IFN-γ release, and the proliferation of lymphocytes, which all were controlled by CTLA4-Ig. Upon in vivo transfer of IPC into an allogeneic host, the splenic CD4+ and CD8+ T-cells exhibited a significant activation, and there was a significant donor-specific antibody response. Either of the mentioned cellular and humoral responses were modulated by a CTLA4-Ig regimen. This regimen also reduced the infiltration of CD3+ T-cells into the IPC injection site along with the improved overall survival of diabetic mice. CTLA4-Ig could be a complementary therapy for improving the efficacy of allogeneic IPC therapy through modulating the cellular and humoral responses that can lead to prolonged durability of IPCs within an allogeneic host.
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Affiliation(s)
- Alireza Mardomi
- Department of Medical Laboratory Sciences and Microbiology, Faculty of Medical Sciences, Tabriz Medical Sciences, Islamic Azad University, Tabriz, Iran
| | - Nabiallah Mohammadi
- Immunogenetics Research Center, Mazandaran University of Medical Sciences, Sari, Iran
| | - Fatemeh Ahmadzadeh
- Immunogenetics Research Center, Mazandaran University of Medical Sciences, Sari, Iran
| | - Saeid Abediankenari
- Immunogenetics Research Center, Mazandaran University of Medical Sciences, Sari, Iran.
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Song H, Li B, Guo R, He S, Peng Z, Qu J, Zhao Y, Zhai X, Yin W, Yang K, Fan X, Zhang J, Tan J, Liu Y, Xie J, Xu J. Hypoxic preconditioned aged BMSCs accelerates MI injury repair by modulating inflammation, oxidative stress and apoptosis. Biochem Biophys Res Commun 2022; 627:45-51. [PMID: 36007334 DOI: 10.1016/j.bbrc.2022.08.039] [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: 08/10/2022] [Accepted: 08/12/2022] [Indexed: 11/25/2022]
Abstract
The benefits of autologous cell therapy for cardiac repair are diminished in aged individuals due to the limited quality and poor tolerance of aged stem cells in the ischemic micro-environment. The safe and efficient methods to improve the therapeutic effect of aged stem cells are needed to treat the increasing number of aged patients with cardiac diseases. In the present study, we aimed to determine whether hypoxic preconditioning can improve the therapeutic effect of aged stem cells even if the responsiveness of aged MSCs is poor, and to seek the underlying mechanism. Using a murine model of MI, our results showed that hypoxic preconditioning promoted the therapeutic effect of aged BMSCs, which was expressed in improved cardiac function, decreased scar size and alleviated cardiac remodeling in vivo. This in vivo effect of hypoxic preconditioned aged BMSCs was associated with alleviated inflammation, oxidative stress and apoptosis in infarcted heart. In vitro studies confirmed that hypoxic preconditioned aged BMSCs exert cytoprotective impacts on H9C2 cells against lethal hypoxia injury via attenuating oxidative stress and apoptosis. Our data support the promise of hypoxic preconditioning as a potential strategy to improve autologous stem cell therapy for ischemic heart injury in aged individuals.
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Affiliation(s)
- Huifang Song
- Department of Hepatological Surgery, First Hospital of Shanxi Medical University, Taiyuan, China; Department of Anatomy, Shanxi Medical University, Taiyuan, China; Shanxi Key Laboratory of Birth Defect and Cell Regeneration, Shanxi Medical University, Taiyuan, China.
| | - Bin Li
- Department of Anatomy, Shanxi Medical University, Taiyuan, China
| | - Rui Guo
- Department of Pathology, Shanxi Province Cancer Hospital, Shanxi Hospital Affiliated to Cancer Hospital, Chinese Academy of Medical Sciences, Cancer Hospital Affiliated to Shanxi Medical University, Taiyuan, China
| | - Sheng He
- Shanxi Key Laboratory of Birth Defect and Cell Regeneration, Shanxi Medical University, Taiyuan, China
| | - Zexu Peng
- Shanxi Key Laboratory of Birth Defect and Cell Regeneration, Shanxi Medical University, Taiyuan, China
| | - Junyuan Qu
- Department of Pathology, Shanxi Province Cancer Hospital, Shanxi Hospital Affiliated to Cancer Hospital, Chinese Academy of Medical Sciences, Cancer Hospital Affiliated to Shanxi Medical University, Taiyuan, China
| | - Yunhe Zhao
- Department of Anatomy, Shanxi Medical University, Taiyuan, China
| | - Xiaoyan Zhai
- Shanxi Key Laboratory of Birth Defect and Cell Regeneration, Shanxi Medical University, Taiyuan, China
| | - Wenjuan Yin
- Shanxi Key Laboratory of Birth Defect and Cell Regeneration, Shanxi Medical University, Taiyuan, China
| | - Kun Yang
- Shanxi Key Laboratory of Birth Defect and Cell Regeneration, Shanxi Medical University, Taiyuan, China
| | - Xuemei Fan
- Shanxi Key Laboratory of Birth Defect and Cell Regeneration, Shanxi Medical University, Taiyuan, China
| | - Jie Zhang
- Shanxi Key Laboratory of Birth Defect and Cell Regeneration, Shanxi Medical University, Taiyuan, China
| | - Jiayin Tan
- Department of Anatomy, Shanxi Medical University, Taiyuan, China
| | - Yang Liu
- Department of Anatomy, Shanxi Medical University, Taiyuan, China
| | - Jun Xie
- Shanxi Key Laboratory of Birth Defect and Cell Regeneration, Shanxi Medical University, Taiyuan, China.
| | - Jun Xu
- Department of Hepatological Surgery, First Hospital of Shanxi Medical University, Taiyuan, China.
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Mishra R, Saha P, Datla SR, Mellacheruvu P, Gunasekaran M, Guru SA, Fu X, Chen L, Bolli R, Sharma S, Kaushal S. Transplanted allogeneic cardiac progenitor cells secrete GDF-15 and stimulate an active immune remodeling process in the ischemic myocardium. J Transl Med 2022; 20:323. [PMID: 35864544 PMCID: PMC9306063 DOI: 10.1186/s12967-022-03534-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 07/13/2022] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Despite promising results in clinical studies, the mechanism for the beneficial effects of allogenic cell-based therapies remains unclear. Macrophages are not only critical mediators of inflammation but also critical players in cardiac remodeling. We hypothesized that transplanted allogenic rat cardiac progenitor cells (rCPCs) augment T-regulatory cells which ultimately promote proliferation of M2 like macrophages by an as-yet undefined mechanism. METHODS AND RESULTS To test this hypothesis, we used crossover rat strains for exploring the mechanism of myocardial repair by allogenic CPCs. Human CPCs (hCPCs) were isolated from adult patients undergoing coronary artery bypass grafting, and rat CPCs (rCPCs) were isolated from male Wistar-Kyoto (WKY) rat hearts. Allogenic rCPCs suppressed the proliferation of T-cells observed in mixed lymphocyte reactions in vitro. Transplanted syngeneic or allogeneic rCPCs significantly increased cardiac function in a rat myocardial infarct (MI) model, whereas xenogeneic CPCs did not. Allogeneic rCPCs stimulated immunomodulatory responses by specifically increasing T-regulatory cells and M2 polarization, while maintaining their cardiac recovery potential and safety profile. Mechanistically, we confirmed the inactivation of NF-kB in Treg cells and increased M2 macrophages in the myocardium after MI by transplanted CPCs derived GDF15 and it's uptake by CD48 receptor on immune cells. CONCLUSION Collectively, these findings strongly support the active immunomodulatory properties and robust therapeutic potential of allogenic CPCs in post-MI cardiac dysfunction.
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Affiliation(s)
- Rachana Mishra
- grid.16753.360000 0001 2299 3507Department of Cardiovascular-Thoracic Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL USA ,grid.413808.60000 0004 0388 2248Department of Pediatrics, Ann & Robert H. Lurie Children’s Hospital, Chicago, IL USA
| | - Progyaparamita Saha
- grid.16753.360000 0001 2299 3507Department of Cardiovascular-Thoracic Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL USA ,grid.413808.60000 0004 0388 2248Department of Pediatrics, Ann & Robert H. Lurie Children’s Hospital, Chicago, IL USA
| | - Srinivasa Raju Datla
- grid.411024.20000 0001 2175 4264Department of Surgery, University of Maryland School of Medicine, Baltimore, MD USA
| | - Pranav Mellacheruvu
- grid.16753.360000 0001 2299 3507Department of Cardiovascular-Thoracic Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL USA
| | - Muthukumar Gunasekaran
- grid.16753.360000 0001 2299 3507Department of Cardiovascular-Thoracic Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL USA ,grid.413808.60000 0004 0388 2248Department of Pediatrics, Ann & Robert H. Lurie Children’s Hospital, Chicago, IL USA
| | - Sameer Ahmad Guru
- grid.16753.360000 0001 2299 3507Department of Cardiovascular-Thoracic Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL USA ,grid.413808.60000 0004 0388 2248Department of Pediatrics, Ann & Robert H. Lurie Children’s Hospital, Chicago, IL USA
| | - Xubin Fu
- grid.16753.360000 0001 2299 3507Department of Cardiovascular-Thoracic Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL USA ,grid.413808.60000 0004 0388 2248Department of Pediatrics, Ann & Robert H. Lurie Children’s Hospital, Chicago, IL USA
| | - Ling Chen
- grid.16753.360000 0001 2299 3507Department of Cardiovascular-Thoracic Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL USA ,grid.413808.60000 0004 0388 2248Department of Pediatrics, Ann & Robert H. Lurie Children’s Hospital, Chicago, IL USA
| | - Roberto Bolli
- grid.266623.50000 0001 2113 1622Division of Cardiovascular Medicine and Institute of Molecular Cardiology, University of Louisville, Louisville, USA
| | - Sudhish Sharma
- Department of Cardiovascular-Thoracic Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, USA. .,Department of Pediatrics, Ann & Robert H. Lurie Children's Hospital, Chicago, IL, USA.
| | - Sunjay Kaushal
- Department of Cardiovascular-Thoracic Surgery, Northwestern University Feinberg School of Medicine, Chicago, IL, USA. .,Department of Pediatrics, Ann & Robert H. Lurie Children's Hospital, Chicago, IL, USA.
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New insights on the monitoring of solid-organ allografts based on immune cell signatures. Transpl Immunol 2021; 70:101509. [PMID: 34843937 DOI: 10.1016/j.trim.2021.101509] [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: 10/23/2021] [Revised: 11/17/2021] [Accepted: 11/23/2021] [Indexed: 11/23/2022]
Abstract
Attaining a fair long-term allograft survival remains a challenge for allogeneic transplantation worldwide. Although the emergence of immunosuppressants has caused noticeable progress in the management of immunologic rejection, proper application of these therapeutics and dose adjustments require delicate and real-time monitoring of recipients. Nevertheless, the majority of conventional allograft monitoring approaches are based on organ damage or functional tests that render them unable to predict the rejection events in early time points before the establishment of a functional alloimmune response. On the other hand, biopsy-based methods include invasive practices and are accompanied by serious complications. In recent years, there have been a myriad of attempts on the discovery of reliable and non-invasive approaches for the monitoring of allografts that regarding a close relationship between allografts and hosts' immune system, most of the attempts have been devoted to the studies on the immune response-associated biomarkers. The discovery of gene and protein expression patterns in immune cells along with their phenotypic characterization and secretome analysis as well as tracking the immune responses in allograft tissues and clinical specimens are among the notable attempts taken to discover the non-invasive predictive markers with a proper coincidence to the pathologic condition. Collectively, these studies suggest a list of candidate biomarkers with ideal potentials for early and non-invasive prediction of allograft rejection and shed light on the way towards developing more standardized and reproducible approaches for monitoring the allograft rejection.
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