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Mellinghoff SC, Cornely OA, Mammadova P, Sprute R, Stemler J. [Innovative therapies for treatment of invasive fungal diseases]. Dtsch Med Wochenschr 2024; 149:560-568. [PMID: 38657595 DOI: 10.1055/a-2132-9240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Invasive fungal diseases (IFD) are difficult to treat and pose a significant threat to immunocompromised individuals. Current antifungal agents face limitations, including antifungal resistance and adverse effects. This review aims to give a comprehensive overview of emerging treatment strategies.Novel drugs in development are Ibrexafungerp, an orally available triterpenoid inhibiting glucan synthesis, and Rezafungin representing the echinocandins with extended half-life and improved tissue penetration, both recently licensed for certain indications. Fosmanogepix targets glycosylphosphatidylinositol biosynthesis, while Olorofim, an orotomide, inhibits fungal nucleic acid synthesis, both currently assessed in advanced clinical trials.Immunotherapeutic approaches include immune checkpoint inhibitors to enhance immune response in immunosuppressed individuals and fungal-specific allogeneic CAR-T cell therapy. For prophylactic purpose in high-risk populations to develop IFD, monoclonal antibodies against different virulence factors of Candida spp. have been discovered but are not yet seen in clinical trials. Vaccines against distinct fungal antigens as well as pan fungal vaccines to prevent IFD are under development in preclinical stages, notably for Candida spp., Cryptococcus spp., and Aspergillus spp., however, their clinical value is still discussed.In summary, major advances to treat IFD have been observed, but challenges for their establishment in the clinical routine persist.
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Wang C, Liu J, Wu Q, Wang Z, Hu B, Bo L. The role of TIM-3 in sepsis: a promising target for immunotherapy? Front Immunol 2024; 15:1328667. [PMID: 38576606 PMCID: PMC10991702 DOI: 10.3389/fimmu.2024.1328667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 03/11/2024] [Indexed: 04/06/2024] Open
Abstract
Sepsis remains a significant cause of mortality and morbidity worldwide, with limited effective treatment options. The T-cell immunoglobulin and mucin domain-containing molecule 3 (TIM-3) has emerged as a potential therapeutic target in various immune-related disorders. This narrative review aims to explore the role of TIM-3 in sepsis and evaluate its potential as a promising target for immunotherapy. We discuss the dynamic expression patterns of TIM-3 during sepsis and its involvement in regulating immune responses. Furthermore, we examine the preclinical studies investigating the regulation of TIM-3 signaling pathways in septic models, highlighting the potential therapeutic benefits and challenges associated with targeting TIM-3. Overall, this review emphasizes the importance of TIM-3 in sepsis pathogenesis and underscores the promising prospects of TIM-3-based immunotherapy as a potential strategy to combat this life-threatening condition.
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Affiliation(s)
- Changli Wang
- Faculty of Anesthesiology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Jinhai Liu
- Faculty of Anesthesiology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Qi Wu
- Faculty of Anesthesiology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Zhi Wang
- Faculty of Anesthesiology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Baoji Hu
- Department of Anesthesiology, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, China
| | - Lulong Bo
- Faculty of Anesthesiology, Changhai Hospital, Naval Medical University, Shanghai, China
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Zhong X, Xie H, Wang S, Ren T, Chen J, Huang Y, Yang N. TIGIT regulates CD4 + T cell immunity against polymicrobial sepsis. Front Immunol 2024; 15:1290564. [PMID: 38545097 PMCID: PMC10965661 DOI: 10.3389/fimmu.2024.1290564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 02/27/2024] [Indexed: 04/04/2024] Open
Abstract
Background Sepsis is one of the major causes of death and increased health care burden in modern intensive care units. Immune checkpoints have been prompted to be key modulators of T cell activation, T cell tolerance and T cell exhaustion. This study was designed to investigate the role of the negative immune checkpoint, T cell immunoglobulin and ITIM domain (TIGIT), in the early stage of sepsis. Method An experimental murine model of sepsis was developed by cecal ligation and puncture (CLP). TIGIT and CD155 expression in splenocytes at different time points were assessed using flow cytometry. And the phenotypes of TIGIT-deficient (TIGIT-/-) and wild-type (WT) mice were evaluated to explore the engagement of TIGIT in the acute phase of sepsis. In addition, the characteristics were also evaluated in the WT septic mice pretreated with anti-TIGIT antibody. TIGIT and CD155 expression in tissues was measured using real-time quantitative PCR and immunofluorescence staining. Proliferation and effector function of splenic immune cells were evaluated by flow cytometry. Clinical severity and tissue injury were scored to evaluate the function of TIGIT on sepsis. Additionally, tissue injury biomarkers in peripheral blood, as well as bacterial load in peritoneal lavage fluid and liver were also measured. Results The expression of TIGIT in splenic T cells and NK cells was significantly elevated at 24 hours post CLP.TIGIT and CD155 mRNA levels were upregulated in sepsis-involved organs when mice were challenged with CLP. In CLP-induced sepsis, CD4+ T cells from TIGIT-/- mice shown increased proliferation potency and cytokine production when compared with that from WT mice. Meanwhile, innate immune system was mobilized in TIGIT-/- mice as indicated by increased proportion of neutrophils and macrophages with potent effector function. In addition, tissue injury and bacteria burden in the peritoneal cavity and liver was reduced in TIGIT-/- mice with CLP induced sepsis. Similar results were observed in mice treated with anti-TIGIT antibody. Conclusion TIGIT modulates CD4+ T cell response against polymicrobial sepsis, suggesting that TIGIT could serve as a potential therapeutic target for sepsis.
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Affiliation(s)
- Xuexin Zhong
- Department of Rheumatology and Clinical Immunology, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Haiping Xie
- Department of Rheumatology and Clinical Immunology, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Shuang Wang
- Department of Rheumatology and Clinical Immunology, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Tingting Ren
- Department of Rheumatology and Clinical Immunology, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Junlin Chen
- Department of Pediatrics, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yuefang Huang
- Department of Pediatrics, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Niansheng Yang
- Department of Rheumatology and Clinical Immunology, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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Chen KY, Liu SY, Tang JJ, Liu MK, Chen XY, Liu ZP, Ferrandon D, Lai KF, Li Z. NLRP3 knockout in mice provided protection against Serratia marcescens-induced acute pneumonia by decreasing PD-L1 and PD-1 expression in macrophages. Int Immunopharmacol 2024; 129:111559. [PMID: 38330794 DOI: 10.1016/j.intimp.2024.111559] [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: 11/12/2023] [Revised: 01/05/2024] [Accepted: 01/15/2024] [Indexed: 02/10/2024]
Abstract
Antibiotic-resistant Serratia marcescens (Sm) is known to cause bloodstream infections, pneumonia, etc. The nod-like receptor family, pyrin domain-containing 3 (NLRP3), has been implicated in various lung infections. Yet, its role in Sm-induced pneumonia was not well understood. In our study, we discovered that deletion of Nlrp3 in mice significantly improved Sm-induced survival rates, reduced bacterial loads in the lungs, bronchoalveolar lavage fluid (BALF), and bloodstream, and mitigated the severity of acute lung injury (ALI) compared to wild-type (WT) mice. Mechanistically, we observed that 24 h post-Sm infection, NLRP3 inflammasome activation occurred, leading to gasdermin D NH2-terminal (GSDMD-NT)-induced pyroptosis in macrophages and IL-1β secretion. The NLRP3 or NLRP3 inflammasome influenced the expression PD-L1 and PD-1, as well as the count of PD-L1 or PD-1-expressing macrophages, alveolar macrophages, interstitial macrophages, PD-L1-expressing neutrophils, and the count of macrophage receptors with collagenous structure (MARCO)-expressing macrophages, particularly MARCO+ alveolar macrophages. The frequency of MARCO+ alveolar macrophages, PD-1 expression, particularly PD-1+ interstitial macrophages were negatively or positively correlated with the Sm load, respectively. Additionally, IL-1β levels in BALF correlated with three features of acute lung injury: histologic score, protein concentration and neutrophil count in BALF. Consequently, our findings suggest that Nlrp3 deletion offers protection agaisnt acute Sm pneumonia in mice by inhibiting inflammasome activation and reducing Sm infection-induced PD-L1/PD-1 or MARCO expression, particularly in macrophages. This highlights potential therapeutic targets for Sm and other gram-negative bacteria-induced acute pneumonia.
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Affiliation(s)
- Kan-Yao Chen
- Sino-French Hoffmann Institute, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China; Department of Clinical Laboratory, Guangdong Provincial People's Hospital Zhuhai Hospital, Zhuhai, China
| | - Shu-Yan Liu
- Sino-French Hoffmann Institute, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China; Department of Clinical Laboratory, Guangzhou Twelfth People's Hospital, Guangzhou, China
| | - Juan-Juan Tang
- Sino-French Hoffmann Institute, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Meng-Ke Liu
- Sino-French Hoffmann Institute, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Xu-Yang Chen
- Sino-French Hoffmann Institute, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Zhi-Peng Liu
- Sino-French Hoffmann Institute, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Dominique Ferrandon
- Sino-French Hoffmann Institute, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China; State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Health, Guangzhou Medical University, Guangzhou, China; Université de Strasbourg, RIDI UPR9022 du CNRS, F-67000 Strasbourg, France
| | - Ke-Fang Lai
- State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Health, Guangzhou Medical University, Guangzhou, China.
| | - Zi Li
- Sino-French Hoffmann Institute, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China; State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Health, Guangzhou Medical University, Guangzhou, China; The Second Affiliated Hospital of Guangzhou Medical University, Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology, Guangzhou Medical University, Guangzhou, China.
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Wu Y, Caldwell B, Wang J, Zhang Y, Li L. Alleviation of monocyte exhaustion by BCG derivative mycolic acid. iScience 2024; 27:108978. [PMID: 38323001 PMCID: PMC10845070 DOI: 10.1016/j.isci.2024.108978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 11/27/2023] [Accepted: 01/16/2024] [Indexed: 02/08/2024] Open
Abstract
Monocyte exhaustion with sustained pathogenic inflammation and immune-suppression, a hallmark of sepsis resulting from systemic infections, presents a challenge with limited therapeutic solutions. This study identified Methoxy-Mycolic Acid (M-MA), a branched mycolic acid derived from Mycobacterium bovis Bacillus Calmette-Guérin (BCG), as a potent agent in alleviating monocyte exhaustion and restoring immune homeostasis. Co-treatment of monocytes with M-MA effectively blocked the expansion of Ly6Chi/CD38hi/PD-L1hi monocytes induced by LPS challenges and restored the expression of immune-enhancing CD86. M-MA treatment restored mitochondrial functions of exhausted monocytes and alleviated their suppressive activities on co-cultured T cells. Independent of TREM2, M-MA blocks Src-STAT1-mediated inflammatory polarization and reduces the production of immune suppressors TAX1BP1 and PLAC8. Whole genome methylation analyses revealed M-MA's ability to erase the methylation memory of exhausted monocytes, particularly restoring Plac8 methylation. Together, our data suggest M-MA as an effective agent in restoring monocyte homeostasis with a therapeutic potential for treating sepsis.
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Affiliation(s)
- Yajun Wu
- Department of Biological Sciences, Virginia Tech; Blacksburg, VA 24061-0910, USA
| | - Blake Caldwell
- Department of Biological Sciences, Virginia Tech; Blacksburg, VA 24061-0910, USA
| | - Jing Wang
- Department of Biological Sciences, Virginia Tech; Blacksburg, VA 24061-0910, USA
| | - Yao Zhang
- Department of Biological Sciences, Virginia Tech; Blacksburg, VA 24061-0910, USA
| | - Liwu Li
- Department of Biological Sciences, Virginia Tech; Blacksburg, VA 24061-0910, USA
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Idiz UO, Aru B, Kaya C, Peker KD, Tatar C, Guler M, Tunay A, Demirel GY, Gurol AO. Could we use PD-1 and PD-L1 expression on lymphocytes and monocytes as predictive markers for prognosis of acute biliary pancreatitis? Immunol Lett 2024; 265:37-43. [PMID: 38199503 DOI: 10.1016/j.imlet.2024.106836] [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: 09/10/2023] [Revised: 01/03/2024] [Accepted: 01/07/2024] [Indexed: 01/12/2024]
Abstract
PURPOSE This study aimed to assess the significance of immunophenotyping and serum cytokines in predicting the clinical progression of acute biliary pancreatitis (ABP). MATERIALS AND METHODS Cytokine levels, T-helper, cytotoxic T, natural killer (NK) cells, monocytes, HLA-DR, and PD-1, as well as PDL-1 immune checkpoints, were measured in ABP patients at the time of diagnosis and compared with results from healthy volunteers. The study also compared leukocyte counts, hematocrit, immunophenotyping results, cytokine statuses, and PD-1, PDL-1 expression between healthy volunteers and ABP subgroups categorized by pancreatitis severity. RESULTS The study included 65 ABP patients and 20 healthy volunteers. Significant differences were observed between groups in hematocrit, leukocyte counts, total monocytes, lymphocytes, CD3+ total T cells, CD4+ Th cells, PD-1 expression on CD4+ and CD8+T lymphocytes, HLA-DR expression on CD14+ monocytes, NK cells, PD-L1 expression on CD14+ monocytes, classical and intermediate monocytes, as well as levels of IL-6, IL-8, IL-10, IL-18, and IL-33 cytokines. Moderate correlations were found with lymphocyte counts, PD-1+CD4+ cells, PD-L1+CD14+ cells, and strong correlations with HLA-DR+CD14+ cells. Hematocrit, CD3+ total T cells, NK cells, CD4+PD-1 + T cells, and CD8+PD-1 + T cells showed independent associations with the severity of ABP. Lymphocyte counts, CD14+HLA-DR+ cells, CD14+PD-L1+ cells, CD4+PD-1 + T cells, classical, and intermediate monocytes exhibited the highest Area Under the Curve rates in determining organ failure. CONCLUSIONS Hematocrit, lymphocyte counts, CD14+HLA-DR+ cells, CD14+PD-L1+ cells, and intermediate monocytes emerged as parameters most closely associated with the severity and these parameters could be useful in predicting the severity of ABP.
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Affiliation(s)
- Ufuk Oguz Idiz
- Department of General Surgery, Istanbul Training and Research Hospital, Istanbul, Turkey; Institute of Health Sciences, Istanbul University, Istanbul, Turkey; Department of Immunology, Istanbul University, DETAE, Istanbul, Turkey.
| | - Basak Aru
- Department of Immunology, Faculty of Medicine, Yeditepe University, Istanbul, Turkey
| | - Cemal Kaya
- Department of General Surgery, Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Turkey
| | - Kivanc Derya Peker
- Department of General Surgery, Hisar Hospital Intercontinental, Istanbul, Turkey
| | - Cihad Tatar
- Department of General Surgery, Acibadem University, Istanbul, Turkey
| | - Mert Guler
- Department of General Surgery, Istanbul Training and Research Hospital, Istanbul, Turkey
| | - Abdurrahman Tunay
- Department of Anesthesia and Reanimation, Istanbul Training and Research Hospital, Istanbul, Turkey
| | | | - Ali Osman Gurol
- Department of Immunology, Istanbul University, DETAE, Istanbul, Turkey
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Chen Y, Guo DZ, Zhu CL, Ren SC, Sun CY, Wang Y, Wang JF. The implication of targeting PD-1:PD-L1 pathway in treating sepsis through immunostimulatory and anti-inflammatory pathways. Front Immunol 2023; 14:1323797. [PMID: 38193090 PMCID: PMC10773890 DOI: 10.3389/fimmu.2023.1323797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Accepted: 11/29/2023] [Indexed: 01/10/2024] Open
Abstract
Sepsis currently remains a major contributor to mortality in the intensive care unit (ICU), with 48.9 million cases reported globally and a mortality rate of 22.5% in 2017, accounting for almost 20% of all-cause mortality worldwide. This highlights the urgent need to improve the understanding and treatment of this condition. Sepsis is now recognized as a dysregulation of the host immune response to infection, characterized by an excessive inflammatory response and immune paralysis. This dysregulation leads to secondary infections, multiple organ dysfunction syndrome (MODS), and ultimately death. PD-L1, a co-inhibitory molecule expressed in immune cells, has emerged as a critical factor in sepsis. Numerous studies have found a significant association between the expression of PD-1/PD-L1 and sepsis, with a particular focus on PD-L1 expressed on neutrophils recently. This review explores the role of PD-1/PD-L1 in immunostimulatory and anti-inflammatory pathways, illustrates the intricate link between PD-1/PD-L1 and sepsis, and summarizes current therapeutic approaches against PD-1/PD-L1 in the treatment and prognosis of sepsis in preclinical and clinical studies.
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Affiliation(s)
- Yu Chen
- School of Basic Medicine, Naval Medical University, Shanghai, China
| | - De-zhi Guo
- School of Basic Medicine, Naval Medical University, Shanghai, China
| | - Cheng-long Zhu
- Faculty of Anesthesiology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Shi-chun Ren
- Faculty of Anesthesiology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Chen-yan Sun
- Faculty of Anesthesiology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Yi Wang
- Faculty of Anesthesiology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Jia-feng Wang
- Faculty of Anesthesiology, Changhai Hospital, Naval Medical University, Shanghai, China
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Yuan Y, Hua L, Zhou J, Liu D, Ouyang F, Chen X, Long S, Huang Y, Liu X, Zheng J, Zhou H. The effect of artesunate to reverse CLP-induced sepsis immunosuppression mice with secondary infection is tightly related to reducing the apoptosis of T cells via decreasing the inhibiting receptors and activating MAPK/ERK pathway. Int Immunopharmacol 2023; 124:110917. [PMID: 37716165 DOI: 10.1016/j.intimp.2023.110917] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 08/12/2023] [Accepted: 09/06/2023] [Indexed: 09/18/2023]
Abstract
T cells play an important role in regulating immune system balance. Sepsis-associated immunosuppression causes apoptosis of T cells and a decrease in their number. Previously, artesunate was found to have an immunomodulatory effect on immunosuppression in model mice with cecal ligation and puncture (CLP)-induced sepsis. In the present study, mouse sepsis models of CLP and CLP with secondary infection were established and treated with artesunate in order to examine the effect of artesunate on adaptive immune response in sepsis-related immunosuppression. The results showed that artesunate treatment could increase the survival rate of CLP mice with secondary Pseudomonas aeruginosa infection, increase the bacterial clearance rate, and also increase the level of the pro-inflammatory cytokine TNF-α. In addition, artesunate resulted in an increase in the number of T cells, CD4+ T cells and CD8+ T cells, and inhibited CD4+ and CD8+ T-cell apoptosis. Artesunate was also found to inhibit the expression of the inhibitory receptors of PD-1, CTLA-4, and BTLA, but it did not affect the expression of Tim-3. Additionally, artesunate significantly increased the phosphorylated ERK level of CD4+ T cells and CD8+ T cells and inhibited mitochondrial pathway-mediated apoptosis in CLP mice with Pseudomonas aeruginosa infection. These findings reveal that artesunate has an immunomodulatory effect on the adaptive immune response in sepsis. These effects include an increase in the numbers of T cells, CD4+ T cells, and CD8+ T cells through inhibition of the expression of inhibitory receptors and promotion of the MAPK/ERK pathway.
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Affiliation(s)
- Yue Yuan
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Ling Hua
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Jun Zhou
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Dan Liu
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Fumin Ouyang
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Xuemin Chen
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Shujuan Long
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Yasi Huang
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Xin Liu
- Medical Research Center, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Jiang Zheng
- Medical Research Center, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Hong Zhou
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou 563000, China.
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Huang CG, Wu YC, Hsieh MJ, Lin YJ, Hsieh TH, Huang PW, Yang SL, Tsao KC, Shih SR, Lee LA. Impact of patient characteristics on innate immune responses and inflammasome activation in ex vivo human lung tissues infected with influenza A virus. Front Cell Infect Microbiol 2023; 13:1269329. [PMID: 37900310 PMCID: PMC10611511 DOI: 10.3389/fcimb.2023.1269329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Accepted: 09/29/2023] [Indexed: 10/31/2023] Open
Abstract
Background Influenza A virus (IAV) infection poses a persistent global health challenge, necessitating a nuanced grasp of host immune responses for optimal interventions. While the interplay between aging, immunosenescence, and IAV is recognized as key in severe lower respiratory tract infections, the role of specific patient attributes in shaping innate immune reactions and inflammasome activity during IAV infection remains under-investigated. In this study, we utilized an ex vivo infection model of human lung tissues with H3N2 IAV to discern relationships among patient demographics, IAV nucleoprotein (NP) expression, toll-like receptor (TLR) profiles, PD-1/PD-L1 markers, and cytokine production. Methods Our cohort consisted of thirty adult patients who underwent video-assisted thoracoscopic surgery during 2018-2019. Post-surgical lung tissues were exposed to H3N2 IAV for ex vivo infections, and the ensuing immune responses were profiled using flow cytometry. Results We observed pronounced IAV activity within lung cells, as indicated by marked NP upregulation in both epithelial cells (P = 0.022) and macrophages (P = 0.003) in the IAV-exposed group relative to controls. Notably, interleukin-2 levels correlated with variations in TLR1 expression on epithelial cells and PD-L1 markers on macrophages. Age emerged as a modulating factor, dampening innate immune reactions, as evidenced by reduced interleukin-2 and interferon-γ concentrations (both adjusted P < 0.05). Intriguingly, a subset of participants with pronounced tumor necrosis factor-alpha post-mock infection (Cluster 1) showed attenuated cytokine responses in contrast to their counterparts in Cluster 2 and Cluster 3 (all adjusted P < 0.05). Individuals in Cluster 2, characterized by a low post-mock infection NP expression in macrophages, exhibited reduced variations in both NP and TLR1-3 expressions on these cells and a decreased variation in interleukin-2 secretion in comparison to their Cluster 3 counterparts, who were identified by their elevated NP macrophage expression (all adjusted P < 0.05). Conclusion Our work elucidates the multifaceted interplay of patient factors, innate immunity, and inflammasome responses in lung tissues subjected to ex vivo H3N2 IAV exposure, reflecting real-world lower respiratory tract infections. While these findings provide a foundation for tailored therapeutic strategies, supplementary studies are requisite for thorough validation and refinement.
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Affiliation(s)
- Chung-Guei Huang
- Department of Laboratory Medicine, Chang Gung Memorial Hospital, Linkou Main Branch, Taoyuan, Taiwan
- Department of Medical Biotechnology and Laboratory Science, Chang Gung University, Taoyuan, Taiwan
- Research Center for Emerging Viral Infections, Chang Gung University, Taoyuan, Taiwan
| | - Yi-Cheng Wu
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Chang Gung Memorial Hospital, Linkou Main Branch, Taoyuan, Taiwan
- Faculty of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
- School of Medicine, College of Life Sciences and Medicine, National Tsing Hua University, Hsinchu, Taiwan
| | - Ming-Ju Hsieh
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Chang Gung Memorial Hospital, Linkou Main Branch, Taoyuan, Taiwan
- Faculty of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Ya-Jhu Lin
- Department of Laboratory Medicine, Chang Gung Memorial Hospital, Linkou Main Branch, Taoyuan, Taiwan
| | - Tzu-Hsuan Hsieh
- Department of Laboratory Medicine, Chang Gung Memorial Hospital, Linkou Main Branch, Taoyuan, Taiwan
| | - Po-Wei Huang
- Department of Laboratory Medicine, Chang Gung Memorial Hospital, Linkou Main Branch, Taoyuan, Taiwan
| | - Shu-Li Yang
- Department of Laboratory Medicine, Chang Gung Memorial Hospital, Linkou Main Branch, Taoyuan, Taiwan
| | - Kuo-Chien Tsao
- Department of Laboratory Medicine, Chang Gung Memorial Hospital, Linkou Main Branch, Taoyuan, Taiwan
- Department of Medical Biotechnology and Laboratory Science, Chang Gung University, Taoyuan, Taiwan
- Research Center for Emerging Viral Infections, Chang Gung University, Taoyuan, Taiwan
| | - Shin-Ru Shih
- Department of Laboratory Medicine, Chang Gung Memorial Hospital, Linkou Main Branch, Taoyuan, Taiwan
- Department of Medical Biotechnology and Laboratory Science, Chang Gung University, Taoyuan, Taiwan
- Research Center for Emerging Viral Infections, Chang Gung University, Taoyuan, Taiwan
| | - Li-Ang Lee
- Faculty of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
- School of Medicine, College of Life Sciences and Medicine, National Tsing Hua University, Hsinchu, Taiwan
- Department of Otorhinolaryngology - Head and Neck Surgery, Chang Gung Memorial Hospital, Linkou Main Branch, Taoyuan, Taiwan
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Wang J, Cai J, Yue L, Zhou X, Hu C, Zhu H. Identification of Potential Biomarkers of Septic Shock Based on Pathway and Transcriptome Analyses of Immune-Related Genes. Genet Res (Camb) 2023; 2023:9991613. [PMID: 37575977 PMCID: PMC10423089 DOI: 10.1155/2023/9991613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 06/19/2023] [Accepted: 07/03/2023] [Indexed: 08/15/2023] Open
Abstract
Immunoregulation is crucial to septic shock (SS) but has not been clearly explained. Our aim was to explore potential biomarkers for SS by pathway and transcriptional analyses of immune-related genes to improve early detection. GSE57065 and GSE95233 microarray data were used to screen differentially expressed genes (DEGs) in SS. Gene Ontology and KEGG (Kyoto Encyclopedia of Genes and Genomes) pathway enrichment analyses of DEGs were performed, and correlations between immune cell and pathway enrichment scores were analyzed. The predictive value of candidate genes was evaluated by receiver operating characteristic (ROC) curves. GSE66099, GSE4607, and GSE13904 datasets were used for external validation. Blood samples from six patients and six controls were collected for validation by qRT-PCR and western blotting. In total, 550 DEGs in SS were identified; these genes were involved in the immune response, inflammation, and infection. Immune-related pathways and levels of infiltration of CD4 + TCM, CD8 + T cells, and preadipocytes differed between SS cases and controls. Seventeen genes were identified as potential biomarkers of SS (areas under ROC curves >0.9). The downregulation of CD8A, CD247, CD3G, LCK, and HLA-DRA in SS was experimentally confirmed. We identified several immune-related biomarkers in SS that may improve early identification of disease risk.
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Affiliation(s)
- Jie Wang
- Department of Critical Care Medicine, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi 341000, China
| | - Jie Cai
- Department of Critical Care Medicine, HUST Union Shenzhen Hospital (Nanshan Hospital), Shenzhen, Guangdong 518052, China
| | - Linlin Yue
- Department of Critical Care Medicine, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi 341000, China
| | - Xixi Zhou
- Department of Critical Care Medicine, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi 341000, China
| | - Chunlin Hu
- Department of Emergency Medicine, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080 Guangdong, China
| | - Hongquan Zhu
- Department of Critical Care Medicine, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi 341000, China
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11
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Oza PP, Kashfi K. The evolving landscape of PCSK9 inhibition in cancer. Eur J Pharmacol 2023; 949:175721. [PMID: 37059376 PMCID: PMC10229316 DOI: 10.1016/j.ejphar.2023.175721] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 03/23/2023] [Accepted: 04/11/2023] [Indexed: 04/16/2023]
Abstract
Cancer is a disease with a significant global burden in terms of premature mortality, loss of productivity, healthcare expenditures, and impact on mental health. Recent decades have seen numerous advances in cancer research and treatment options. Recently, a new role of cholesterol-lowering PCSK9 inhibitor therapy has come to light in the context of cancer. PCSK9 is an enzyme that induces the degradation of low-density lipoprotein receptors (LDLRs), which are responsible for clearing cholesterol from the serum. Thus, PCSK9 inhibition is currently used to treat hypercholesterolemia, as it can upregulate LDLRs and enable cholesterol reduction through these receptors. The cholesterol-lowering effects of PCSK9 inhibitors have been suggested as a potential mechanism to combat cancer, as cancer cells have been found to increasingly rely on cholesterol for their growth needs. Additionally, PCSK9 inhibition has demonstrated the potential to induce cancer cell apoptosis through several pathways, increase the efficacy of a class of existing anticancer therapies, and boost the host immune response to cancer. A role in managing cancer- or cancer treatment-related development of dyslipidemia and life-threatening sepsis has also been suggested. This review examines the current evidence regarding the effects of PCSK9 inhibition in the context of different cancers and cancer-associated complications.
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Affiliation(s)
- Palak P Oza
- Department of Molecular, Cellular and Biomedical Sciences, Sophie Davis School of Biomedical Education, City University of New York School of Medicine, New York, NY, 10031, USA
| | - Khosrow Kashfi
- Department of Molecular, Cellular and Biomedical Sciences, Sophie Davis School of Biomedical Education, City University of New York School of Medicine, New York, NY, 10031, USA; Graduate Program in Biology, City University of New York Graduate Center, New York, 10091, USA.
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12
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Zhao Y, Zhang Y, Liu J. Regulatory effect of Pseudomonas aeruginosa mannose-sensitive hemagglutinin on inflammation and immune function in percutaneous nephrolithotomy patients with upper urinary tract calculi complicated with infection. Front Immunol 2023; 14:1181688. [PMID: 37377966 PMCID: PMC10291127 DOI: 10.3389/fimmu.2023.1181688] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 04/20/2023] [Indexed: 06/29/2023] Open
Abstract
Objective To study the effect of an injection of Pseudomonas aeruginosa mannose-sensitive hemagglutinin (PA-MSHA) on inflammation and immune function in patients with upper urinary tract calculi complicated by infection who have undergone percutaneous nephrolithotomy. Methods We retrospectively recorded the clinical data of patients with upper urinary tract calculi complicated by infection who have undergone Percutaneous nephrolithotomy(PCNL) in the Department of Urology, 2nd Affiliation Hospital of Kunming Medical University, from March to December 2021. Clinical data include general condition, laboratory index, CT, postoperative body temperature, heart rate, respiration, SIRS, sepsis, etc. Patients were divided into treated and control groups according to whether they had received a preoperative PA-MSHA injection. The two groups were compared for indices of inflammation and complications of infection after PCNL. Pre- and post-operative lymphocyte subsets and immunoglobulin changes were compared. Results 115 patients were included in the study, including 43 in the treatment group and 72 in the control group. After Propensity Score Matching, 90 patients were divided into treatment (n=35) and control (n=55) groups. The postoperative inflammation index was higher in the treatment group than in the control group (P<0.05). The incidence of postoperative SIRS was higher in the treatment group than control (P<0.05). There were no cases of sepsis in either group. The double-positive T cells lymphocyte subsets were higher in the treatment group than in the control group ((P<0.05). Pre- and post-operative changes in immune function: total T lymphocyte count reduced, NK and NKT cell count increased in the control group, double-positive T cell count increased in the treatment group, IgG, IgA, IgM, complement C3 and C4 count reduced in both groups post-operatively. Conclusion This study found that patients with upper urinary tract calculi and infection treated with antibiotic-based PA-MSHA before percutaneous nephrolithotomy had an increased inflammatory response after surgery, which may play a role in the prevention and treatment of sepsis. The percentage of double-positive T cells in the peripheral blood was increased after PA-MSHA treatment, which may have an immunomodulatory and protective effect in PCNL patients with stones complicated by infection.
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Affiliation(s)
- Yuan Zhao
- The Department of Urology, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Yafei Zhang
- The Department of Urology, Kunming First People’s Hospital: Affiliated Calmette Hospital of Kunming Medical University, Kunming, China
| | - Jianhe Liu
- The Department of Urology, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
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13
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Zhang T, Yu-Jing L, Ma T. Role of regulation of PD-1 and PD-L1 expression in sepsis. Front Immunol 2023; 14:1029438. [PMID: 36969168 PMCID: PMC10035551 DOI: 10.3389/fimmu.2023.1029438] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Accepted: 02/27/2023] [Indexed: 03/11/2023] Open
Abstract
Long term immunosuppression is problematic during sepsis. The PD-1 and PD-L1 immune checkpoint proteins have potent immunosuppressive functions. Recent studies have revealed several features of PD-1 and PD-L1 and their roles in sepsis. Here, we summarize the overall findings of PD-1 and PD-L1 by first reviewing the biological features of PD-1 and PD-L1 and then discussing the mechanisms that control the expression of PD-1 and PD-L1. We then review the functions of PD-1 and PD-L1 in physiological settings and further discuss PD-1 and PD-L1 in sepsis, including their involvement in several sepsis-related processes and their potential therapeutic relevance in sepsis. In general, PD-1 and PD-L1 have critical roles in sepsis, indicating that their regulation may be a potential therapeutic target for sepsis.
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Affiliation(s)
- Teng Zhang
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Li Yu-Jing
- Department of Neurology, Tianjin Medical University General Hospital, Tianjin, China
| | - Tao Ma
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, China
- *Correspondence: Tao Ma,
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14
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Wu Y, Wang G, Huang Z, Yang B, Yang T, Liu J, Li P, Li J. Diagnostic and therapeutic value of biomarkers in urosepsis. Ther Adv Urol 2023; 15:17562872231151852. [PMID: 36744043 PMCID: PMC9893402 DOI: 10.1177/17562872231151852] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 01/03/2023] [Indexed: 02/02/2023] Open
Abstract
Urosepsis is sepsis caused by urogenital tract infection and is one of the most common critical illnesses in urology. If urosepsis is not diagnosed early, it can rapidly progress and worsen, leading to increased mortality. In recent years, with the increase of urinary tract surgery, the incidence of urosepsis continues to rise, posing a serious threat to patients. Early diagnosis of urosepsis, timely and effective treatment can greatly reduce the mortality of patients. Biomarkers such as WBC, NLR, PCT, IL-6, CRP, lactate, and LncRNA all play specific roles in the early diagnosis or prognosis of urosepsis. In addition to the abnormal increase of WBC, we should be more alert to the rapid decline of WBC. NLR values were superior to WBC counts alone in predicting infection severity. Compared with several other biomarkers, PCT values can differentiate between bacterial and non-bacterial sepsis. IL-6 always has high sensitivity and specificity for the diagnosis of sepsis, and CRP also has high sensitivity and specificity for the diagnosis of urosepsis. Lactic acid is closely related to the prognosis of patients with urosepsis. LncRNAs may be potential biomarkers of urosepsis. This article summarizes the main biomarkers, hoping to provide a reference for the timely diagnosis and evaluation of urosepsis.
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Affiliation(s)
| | | | - Ziye Huang
- The Department of Urology, The Second
Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, P.R.
China
| | - Bowei Yang
- The Department of Urology, The Second
Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, P.R.
China
| | - Tongxin Yang
- The Department of Urology, The Second
Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, P.R.
China
| | - Jianhe Liu
- The Department of Urology, The Second
Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, P.R.
China
| | - Pei Li
- The Department of Urology, The Second
Affiliated Hospital of Kunming Medical University, No. 374 Dian-Mian Avenue,
Kunming 650101, Yunnan, P.R. China
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15
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Liu S, Zhang YL, Zhang LY, Zhao GJ, Lu ZQ. FCGR2C: An emerging immune gene for predicting sepsis outcome. Front Immunol 2022; 13:1028785. [PMID: 36532072 PMCID: PMC9757160 DOI: 10.3389/fimmu.2022.1028785] [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: 08/26/2022] [Accepted: 11/17/2022] [Indexed: 12/05/2022] Open
Abstract
Background Sepsis is a life-threatening disease associated with immunosuppression. Immunosuppression could ultimately increase sepsis mortality. This study aimed to identify the prognostic biomarkers related to immunity in sepsis. Methods Public datasets of sepsis downloaded from the Gene Expression Omnibus (GEO) database were divided into the discovery cohort and the first validation cohort. We used R software to screen differentially expressed genes (DEGs) and analyzed DEGs' functional enrichment in the discovery dataset. Immune-related genes (IRGs) were filtered from the GeneCards website. A Lasso regression model was used to screen candidate prognostic genes from the intersection of DEGs and IRGs. Then, the candidate prognostic genes with significant differences were identified as prognostic genes in the first validation cohort. We further validated the expression of the prognostic genes in the second validation cohort of 81 septic patients recruited from our hospital. In addition, we used four immune infiltration methods (MCP-counter, ssGSEA, ImmuCellAI, and CIBERSORT) to analyze immune cell composition in sepsis. We also explored the correlation between the prognostic biomarker and immune cells. Results First, 140 genes were identified as prognostic-related immune genes from the intersection of DEGs and IRGs. We screened 18 candidate prognostic genes in the discovery cohort with the lasso regression model. Second, in the first validation cohort, we identified 4 genes (CFHR2, FCGR2C, GFI1, and TICAM1) as prognostic immune genes. Subsequently, we found that FCGR2C was the only gene differentially expressed between survivors and non-survivors in 81 septic patients. In the discovery and first validation cohorts, the AUC values of FCGR2C were 0.73 and 0.67, respectively. FCGR2C (AUC=0.84) had more value than SOFA (AUC=0.80) and APACHE II (AUC=0.69) in evaluating the prognosis of septic patients in our recruitment cohort. Moreover, FCGR2C may be closely related to many immune cells and functions, such as B cells, NK cells, neutrophils, cytolytic activity, and inflammatory promotion. Finally, enrichment analysis showed that FCGR2C was enriched in the phagosome signaling pathway. Conclusion FCGR2C could be an immune biomarker associated with prognosis, which may be a new direction of immunotherapy to reduce sepsis mortality.
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Affiliation(s)
- Si Liu
- Emergency Department, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China,Special Medical Department, Nanchong Central Hospital, Nanchong, Sichuan, China
| | - Yao Lu Zhang
- Emergency Department, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Lu Yao Zhang
- Emergency Department, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Guang Ju Zhao
- Emergency Department, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China,*Correspondence: Guang Ju Zhao, ; Zhong Qiu Lu,
| | - Zhong Qiu Lu
- Emergency Department, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China,*Correspondence: Guang Ju Zhao, ; Zhong Qiu Lu,
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16
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PD-L1 negatively regulates antifungal immunity by inhibiting neutrophil release from bone marrow. Nat Commun 2022; 13:6857. [PMID: 36369287 PMCID: PMC9652346 DOI: 10.1038/s41467-022-34722-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 11/03/2022] [Indexed: 11/13/2022] Open
Abstract
Programmed death ligand 1 (PD-L1) has been shown to be inducibly expressed on neutrophils to suppress host immunity during polymicrobial sepsis, virus and parasite infections. However, the role of PD-L1 on neutrophil-mediated antifungal immunity remains wholly unknown. Here, we show that the expression of PD-L1 on murine and human neutrophils was upregulated upon the engagement of C-type lectin receptor Dectin-1 with its ligand β-glucans, exposed on fungal pathogen Candida albicans yeast. Moreover, β-glucan stimulation induced PD-L1 translocation into nucleus to regulate the production of chemokines CXCL1 and CXCL2, which control neutrophil mobilization. Importantly, C. albicans infection-induced expression of PD-L1 leads to neutrophil accumulation in bone marrow, through mediating their autocrine secretion of CXCL1/2. Furthermore, neutrophil-specific deficiency of PD-L1 impaired CXCL1/2 secretion, which promoted neutrophil migration from bone marrow into the peripheral circulation, thereby conferring host resistance to C. albicans infection. Finally, either PD-L1 blockade or pharmacological inhibition of PD-L1 expression significantly increased neutrophil release from bone marrow to enhance host antifungal immunity. Our data together indicate that activation of Dectin-1/PD-L1 cascade by β-glucans inhibits neutrophil release from bone marrow reserve, contributing to the negative regulation of antifungal innate immunity, which functions as a potent immunotherapeutic target against life-threatening fungi infections.
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17
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Wang Q, Deng J, Sun J, Zhang H, Liu D, Gao C, Qiu J, Liu W, Qu G, Wen D, Du J, Zhang A, Zeng L, Jiang J. PDGFR kinase inhibitor protects against septic death via regulation of BTLA. SCIENCE CHINA. LIFE SCIENCES 2022; 65:1917-1928. [PMID: 35918604 PMCID: PMC9345782 DOI: 10.1007/s11427-021-2136-y] [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: 03/17/2022] [Accepted: 06/01/2022] [Indexed: 06/15/2023]
Abstract
Sepsis, defined as life-threatening organ failure caused by a dysregulated host response to severe infection, is a major cause of death among intensive care unit patients. Therapies targeting on immunomodulatory is a new research field in sepsis treatment. B- and T-lymphocyte attenuator (BTLA) is an inhibitory costimulatory factor molecule of B and T lymphocytes. Studies have shown that elevated expression of BTLA in lymphocytes can reduce mortality in sepsis, but its regulatory compounds and the underlying mechanism remains to be elucidated. Here, we show that treatment with CP-673451 significantly decreases mortality of septic mouse. CP-673451 is a PDGFR kinase inhibitor which can promote the expression of BTLA, inhibit the release of chemokines such as CXCL13, and reduce first the chemotaxis of B cells to the peripheral blood and vital organs. CP-673451 also inhibits both the release of cytokines and chemokines such as IL-1β, IL-6, IL-10, TNF-α, CCL1, CCL2 and CCL7 and reduces both the chemotactic ability of T cells. This suggests that CP-673451 may prevent septic death by inhibiting lymphocyte chemotaxis and alleviating "cytokine storm". In conclusion, our study provides a new therapeutic target and an effective compound for sepsis treatment.
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Affiliation(s)
- Qiang Wang
- Department of Trauma Medical Center, Daping Hospital, State Key Laboratory of Trauma, Burns and Combined Injury, Army Medical University, Chongqing, 400042, China
- Department of Emergency, the Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, 550001, China
| | - Jin Deng
- Department of Emergency, the Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, 550001, China
| | - Jianhui Sun
- Department of Trauma Medical Center, Daping Hospital, State Key Laboratory of Trauma, Burns and Combined Injury, Army Medical University, Chongqing, 400042, China
| | - Huacai Zhang
- Department of Trauma Medical Center, Daping Hospital, State Key Laboratory of Trauma, Burns and Combined Injury, Army Medical University, Chongqing, 400042, China
| | - Di Liu
- Department of Trauma Medical Center, Daping Hospital, State Key Laboratory of Trauma, Burns and Combined Injury, Army Medical University, Chongqing, 400042, China
| | - Chu Gao
- Department of Trauma Medical Center, Daping Hospital, State Key Laboratory of Trauma, Burns and Combined Injury, Army Medical University, Chongqing, 400042, China
| | - Jinchao Qiu
- Department of Trauma Medical Center, Daping Hospital, State Key Laboratory of Trauma, Burns and Combined Injury, Army Medical University, Chongqing, 400042, China
- Department of Emergency, the Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, 550001, China
| | - Wenyi Liu
- Department of Trauma Medical Center, Daping Hospital, State Key Laboratory of Trauma, Burns and Combined Injury, Army Medical University, Chongqing, 400042, China
| | - Guoxin Qu
- Department of Trauma Medical Center, Daping Hospital, State Key Laboratory of Trauma, Burns and Combined Injury, Army Medical University, Chongqing, 400042, China
- Department of Emergency, the Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang, 550001, China
| | - Dalin Wen
- Department of Trauma Medical Center, Daping Hospital, State Key Laboratory of Trauma, Burns and Combined Injury, Army Medical University, Chongqing, 400042, China
| | - Juan Du
- Department of Trauma Medical Center, Daping Hospital, State Key Laboratory of Trauma, Burns and Combined Injury, Army Medical University, Chongqing, 400042, China
| | - Anqiang Zhang
- Department of Trauma Medical Center, Daping Hospital, State Key Laboratory of Trauma, Burns and Combined Injury, Army Medical University, Chongqing, 400042, China
| | - Ling Zeng
- Department of Trauma Medical Center, Daping Hospital, State Key Laboratory of Trauma, Burns and Combined Injury, Army Medical University, Chongqing, 400042, China.
| | - Jianxin Jiang
- Department of Trauma Medical Center, Daping Hospital, State Key Laboratory of Trauma, Burns and Combined Injury, Army Medical University, Chongqing, 400042, China.
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18
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Li JY, Yao RQ, Xie MY, Zhou QY, Zhao PY, Tian YP, Yao YM. Publication trends of research on sepsis and programmed cell death during 2002–2022: A 20-year bibliometric analysis. Front Cell Infect Microbiol 2022; 12:999569. [PMID: 36211966 PMCID: PMC9537822 DOI: 10.3389/fcimb.2022.999569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 09/07/2022] [Indexed: 11/13/2022] Open
Abstract
Background Sepsis is considered an intractable dysfunction that results from the disordered host immune response to uncontrolled infection. Even though the precise mechanism of sepsis remains unclear, scientific advances have highlighted the key role of various programmed cell death processes in the pathophysiology of sepsis. The current study aims to explore the worldwide research trend on programmed cell death in the setting of sepsis and assesses the achievements of publications from various countries, institutions, journals, and authors globally. Material and methods Associated publications during 2002–2022 with the topical subject of sepsis and programmed cell death were extracted from the Web of Science. VOSviewer was utilized to evaluate and map the published trend in the relevant fields. Results All 2,037 relevant manuscripts with a total citation of 71,575 times were screened out by the end of 1 January 2022. China accounted for the largest number of publications (45.07%) and was accompanied by corporate citations (11,037) and H-index (48), which ranked second globally. The United States has been ranked first place with the highest citations (30,775) and H-index (88), despite a low publication number (29.95%), which was subsequent to China. The journal Shock accounted for the largest number of publications in this area. R. S. Hotchkiss, affiliated with Washington University, was considered to have published the most papers in the relevant fields (57) and achieved the highest citation frequencies (9,523). The primary keywords on the topic of programmed cell death in sepsis remarkably focused on “inflammation” “immunosuppression”, and “oxidative stress”, which were recognized as the core mechanisms of sepsis, eventually attributing to programmed cell death. The involved research on programmed cell death induced by immune dysregulation of sepsis was undoubtedly the hotspot in the pertinent areas. Conclusions The United States has been academically outstanding in sepsis-related research. There appears to be an incompatible performance between publications and quantity with China. Frontier advances may be consulted in the journal Shock. The leading-edge research on the scope of programmed cell death in sepsis should preferably focus on immune dissonance-related studies in the future.
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Affiliation(s)
- Jing-yan Li
- Department of Emergency, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Ren-qi Yao
- Translational Medicine Research Center, Medical Innovation Research Division and Fourth Medical Center of the Chinese People's Liberation Army (PLA) General Hospital, Beijing, China
| | - Min-yue Xie
- Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Qi-yuan Zhou
- Department of Emergency, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Peng-yue Zhao
- Translational Medicine Research Center, Medical Innovation Research Division and Fourth Medical Center of the Chinese People's Liberation Army (PLA) General Hospital, Beijing, China
| | - Ying-ping Tian
- Department of Emergency, The Second Hospital of Hebei Medical University, Shijiazhuang, China
- *Correspondence: Ying-ping Tian, ; Yong-ming Yao,
| | - Yong-ming Yao
- Department of Emergency, The Second Hospital of Hebei Medical University, Shijiazhuang, China
- Translational Medicine Research Center, Medical Innovation Research Division and Fourth Medical Center of the Chinese People's Liberation Army (PLA) General Hospital, Beijing, China
- *Correspondence: Ying-ping Tian, ; Yong-ming Yao,
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19
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Antoni AC, Pylaeva E, Budeus B, Jablonska J, Klein-Hitpaß L, Dudda M, Flohé SB. TLR2-induced CD8+ T-cell deactivation shapes dendritic cell differentiation in the bone marrow during sepsis. Front Immunol 2022; 13:945409. [PMID: 36148245 PMCID: PMC9488929 DOI: 10.3389/fimmu.2022.945409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 07/15/2022] [Indexed: 11/17/2022] Open
Abstract
Sepsis is associated with profound immune dysregulation that increases the risk for life-threatening secondary infections: Dendritic cells (DCs) undergo functional reprogramming due to yet unknown changes during differentiation in the bone marrow (BM). In parallel, lymphopenia and exhaustion of T lymphocytes interfere with antigen-specific adaptive immunity. We hypothesized that there exists a link between T cells and the modulation of DC differentiation in the BM during murine polymicrobial sepsis. Sepsis was induced by cecal ligation and puncture (CLP), a model for human bacterial sepsis. At different time points after CLP, the BM and spleen were analyzed in terms of T-cell subpopulations, activation, and Interferon (IFN)-γ synthesis as well as the number of pre-DCs. BM-derived DCs were generated in vitro. We observed that naïve and virtual memory CD8+ T cells, but not CD4+ T cells, were activated in an antigen-independent manner and accumulated in the BM early after CLP, whereas lymphopenia was evident in the spleen. The number of pre-DCs strongly declined during acute sepsis in the BM and almost recovered by day 4 after CLP, which required the presence of CD8+ T cells. Adoptive transfer experiments and in vitro studies with purified T cells revealed that Toll-like receptor 2 (TLR2) signaling in CD8+ T cells suppressed their capacity to secrete IFN-γ and was sufficient to change the transcriptome of the BM during sepsis. Moreover, the diminished IFN-γ production of CD8+ T cells favored the differentiation of DCs with increased production of the immune-activating cytokine Interleukin (IL)-12. These data identify a novel role of CD8+ T cells in the BM during sepsis as they sense TLR2 ligands and control the number and function of de novo differentiating DCs.
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Affiliation(s)
- Anne-Charlotte Antoni
- Department of Trauma, Hand, and Reconstructive Surgery, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Ekaterina Pylaeva
- Department of Otorhinolaryngology, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Bettina Budeus
- Institute of Cell Biology, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Jadwiga Jablonska
- Department of Otorhinolaryngology, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Ludger Klein-Hitpaß
- Institute of Cell Biology, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Marcel Dudda
- Department of Trauma, Hand, and Reconstructive Surgery, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Stefanie B. Flohé
- Department of Trauma, Hand, and Reconstructive Surgery, University Hospital Essen, University Duisburg-Essen, Essen, Germany
- *Correspondence: Stefanie B. Flohé,
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20
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Bick A, Buys W, Engler A, Madel R, Atia M, Faro F, Westendorf AM, Limmer A, Buer J, Herbstreit F, Kirschning CJ, Peters J. Immune hyporeactivity to bacteria and multiple TLR-ligands, yet no response to checkpoint inhibition in patients just after meeting Sepsis-3 criteria. PLoS One 2022; 17:e0273247. [PMID: 35981050 PMCID: PMC9387870 DOI: 10.1371/journal.pone.0273247] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Accepted: 08/03/2022] [Indexed: 11/18/2022] Open
Abstract
Rationale
The immune profile of sepsis patients is incompletely understood and hyperinflammation and hypoinflammation may occur concurrently or sequentially. Immune checkpoint inhibition (ICI) may counter hypoinflammation but effects are uncertain. We tested the reactivity of septic whole blood to bacteria, Toll-like receptor (TLR) ligands and to ICI.
Methods
Whole blood assays of 61 patients’ samples within 24h of meeting sepsis-3 criteria and 12 age and sex-matched healthy volunteers. Measurements included pattern/danger-associated molecular pattern (P/DAMP), cytokine concentrations at baseline and in response to TLR 2, 4, and 7/8 ligands, heat-inactivated Staphylococcus aureus or Escherichia coli, E.coli lipopolysaccharide (LPS), concentration of soluble and cellular immune checkpoint molecules, and cytokine concentrations in response to ICI directed against programmed-death receptor 1 (PD1), PD1-ligand 1, or cytotoxic T-lymphocyte antigen 4, both in the absence and presence of LPS.
Main results
In sepsis, concentrations of P/DAMPs and inflammatory cytokines were increased and the latter increased further upon incubation ex vivo. However, cytokine responses to TLR 2, 4, and 7/8 ligands, heat-inactivated S. aureus or E. coli, and E. coli LPS were all depressed. Depression of the response to LPS was associated with increased in-hospital mortality. Despite increased PD-1 expression on monocytes and T-cells, and monocyte CTLA-4 expression, however, addition of corresponding checkpoint inhibitors to assays failed to increase inflammatory cytokine concentrations in the absence and presence of LPS.
Conclusion
Patients first meeting Sepsis-3 criteria reveal 1) depressed responses to multiple TLR-ligands, bacteria, and bacterial LPS, despite concomitant inflammation, but 2) no response to immune checkpoint inhibition.
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Affiliation(s)
- Alexandra Bick
- Klinik für Anästhesiologie und Intensivmedizin, Universität Duisburg Essen & Universitätsklinikum Essen, Essen, Germany
| | - Willem Buys
- Universität Duisburg-Essen, Essen, Germany
- * E-mail:
| | - Andrea Engler
- Klinik für Anästhesiologie und Intensivmedizin, Universität Duisburg Essen & Universitätsklinikum Essen, Essen, Germany
| | | | - Mazen Atia
- Universität Duisburg-Essen, Essen, Germany
| | | | - Astrid M. Westendorf
- Institut für Medizinische Mikrobiologie, Universität Duisburg Essen & Universitätsklinikum Essen, Essen, Germany
| | - Andreas Limmer
- Klinik für Anästhesiologie und Intensivmedizin, Universität Duisburg Essen & Universitätsklinikum Essen, Essen, Germany
| | - Jan Buer
- Institut für Medizinische Mikrobiologie, Universität Duisburg Essen & Universitätsklinikum Essen, Essen, Germany
| | - Frank Herbstreit
- Klinik für Anästhesiologie und Intensivmedizin, Universität Duisburg Essen & Universitätsklinikum Essen, Essen, Germany
| | - Carsten J. Kirschning
- Institut für Medizinische Mikrobiologie, Universität Duisburg Essen & Universitätsklinikum Essen, Essen, Germany
| | - Jürgen Peters
- Klinik für Anästhesiologie und Intensivmedizin, Universität Duisburg Essen & Universitätsklinikum Essen, Essen, Germany
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Penatzer JA, Alexander R, Simon S, Wolfe A, Breuer J, Hensley J, Fabia R, Hall M, Thakkar RK. Early detection of soluble CD27, BTLA, and TIM-3 predicts the development of nosocomial infection in pediatric burn patients. Front Immunol 2022; 13:940835. [PMID: 35958579 PMCID: PMC9360547 DOI: 10.3389/fimmu.2022.940835] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 06/30/2022] [Indexed: 11/13/2022] Open
Abstract
Thermal injury induces concurrent inflammatory and immune dysfunction, which is associated with adverse clinical outcomes. However, these effects in the pediatric population are less studied and there is no standard method to identify those at risk for developing infections. Our goal was to better understand immune dysfunction and identify soluble protein markers following pediatric thermal injury. Further we wanted to determine which early inflammatory, soluble, or immune function markers are most predictive of the development of nosocomial infections (NI) after burn injury. We performed a prospective observational study at a single American Burn Association-verified Pediatric Burn Center. A total of 94 pediatric burn subjects were enrolled and twenty-three of those subjects developed a NI with a median time to diagnosis of 8 days. Whole blood samples, collected within the first 72 hours after injury, were used to compare various markers of inflammation, immune function, and soluble proteins between those who recovered without developing an infection and those who developed a NI after burn injury. Within the first three days of burn injury, innate and adaptive immune function markers (ex vivo lipopolysaccharide-induced tumor necrosis factor alpha production capacity, and ex vivo phytohemagglutinin-induced interleukin-10 production capacity, respectively) were decreased for those subjects who developed a subsequent NI. Further analysis of soluble protein targets associated with these pathways displayed significant increases in soluble CD27, BTLA, and TIM-3 for those who developed a NI. Our findings indicate that suppression of both the innate and adaptive immune function occurs concurrently within the first 72 hours following pediatric thermal injury. At the same time, subjects who developed NI have increased soluble protein biomarkers. Soluble CD27, BTLA, and TIM-3 were highly predictive of the development of subsequent infectious complications. This study identifies early soluble protein makers that are predictive of infection in pediatric burn subjects. These findings should inform future immunomodulatory therapeutic studies.
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Affiliation(s)
- Julia A. Penatzer
- Center for Clinical and Translation Research, The Research Institute at Nationwide Children’s Hospital, Columbus, OH, United States
| | - Robin Alexander
- Biostatistics Resource, The Research Institute at Nationwide Children’s Hospital, Columbus, OH, United States
| | - Shan Simon
- Center for Clinical and Translation Research, The Research Institute at Nationwide Children’s Hospital, Columbus, OH, United States
| | - Amber Wolfe
- Division of Critical Care Medicine, Nationwide Children’s Hospital, Columbus, OH, United States
| | - Julie Breuer
- Division of Critical Care Medicine, Nationwide Children’s Hospital, Columbus, OH, United States
| | - Josey Hensley
- Division of Critical Care Medicine, Nationwide Children’s Hospital, Columbus, OH, United States
| | - Renata Fabia
- Department of Pediatric Surgery, Burn Center, Nationwide Children’s Hospital, Columbus, OH, United States
| | - Mark Hall
- Biostatistics Resource, The Research Institute at Nationwide Children’s Hospital, Columbus, OH, United States
- Division of Critical Care Medicine, Nationwide Children’s Hospital, Columbus, OH, United States
- Department of Pediatric Surgery, Burn Center, Nationwide Children’s Hospital, Columbus, OH, United States
| | - Rajan K. Thakkar
- Center for Clinical and Translation Research, The Research Institute at Nationwide Children’s Hospital, Columbus, OH, United States
- Department of Pediatric Surgery, Burn Center, Nationwide Children’s Hospital, Columbus, OH, United States
- *Correspondence: Rajan K. Thakkar,
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22
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Zhang T, Yu-Jing L, Ma T. The immunomodulatory function of adenosine in sepsis. Front Immunol 2022; 13:936547. [PMID: 35958599 PMCID: PMC9357910 DOI: 10.3389/fimmu.2022.936547] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 07/06/2022] [Indexed: 12/03/2022] Open
Abstract
Sepsis is an unsolved clinical condition with a substantial mortality rate in the hospital. Despite decades of research, no effective treatments for sepsis exists. The role of adenosine in the pathogenesis of sepsis is discussed in this paper. Adenosine is an essential endogenous molecule that activates the A1, A2a, A2b, and A3 adenosine receptors to regulate tissue function. These receptors are found on a wide range of immune cells and bind adenosine, which helps to control the immune response to inflammation. The adenosine receptors have many regulatory activities that determine the onset and progression of the disease, which have been discovered via the use of animal models. A greater understanding of the role of adenosine in modulating the immune system has sparked hope that an adenosine receptor-targeted treatment may be used one day to treat sepsis.
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Affiliation(s)
- Teng Zhang
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Li Yu-Jing
- Department of Neurology, Tianjin Medical University General Hospital, Tianjin, China
| | - Tao Ma
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, China
- *Correspondence: Tao Ma,
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Guijas C, Horton LE, Hoang L, Domingo-Almenara X, Billings EM, Ware BC, Sullivan B, Siuzdak G. Microbial Metabolite 3-Indolepropionic Acid Mediates Immunosuppression. Metabolites 2022; 12:metabo12070645. [PMID: 35888769 PMCID: PMC9317520 DOI: 10.3390/metabo12070645] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 06/27/2022] [Accepted: 07/06/2022] [Indexed: 01/07/2023] Open
Abstract
The microbial-derived metabolite, 3-indolepropionic acid (3-IPA), has been intensely studied since its origins were discovered in 2009; however, 3-IPA's role in immunosuppression has had limited attention. Untargeted metabolomic analyses of T-cell exhaustion and immunosuppression, represented by dysfunctional under-responsive CD8+ T cells, reveal a potential role of 3-IPA in these responses. T-cell exhaustion was examined via infection of two genetically related mouse strains, DBA/1J and DBA/2J, with lymphocytic choriomeningitis virus (LCMV) Clone 13 (Cl13). The different mouse strains produced disparate outcomes driven by their T-cell responses. Infected DBA/2J presented with exhausted T cells and persistent infection, and DBA/1J mice died one week after infection from cytotoxic T lymphocytes (CTLs)-mediated pulmonary failure. Metabolomics revealed over 70 metabolites were altered between the DBA/1J and DBA/2J models over the course of the infection, most of them in mice with a fatal outcome. Cognitive-driven prioritization combined with statistical significance and fold change were used to prioritize the metabolites. 3-IPA, a tryptophan-derived metabolite, was identified as a high-priority candidate for testing. To test its activity 3-IPA was added to the drinking water of the mouse models during LCMV Cl13 infection, with the results showing that 3-IPA allowed the mice to survive longer. This negative immune-modulation effect might be of interest for the modulation of CTL responses in events such as autoimmune diseases, type I diabetes or even COVID-19. Moreover, 3-IPA's bacterial origin raises the possibility of targeting the microbiome to enhance CTL responses in diseases such as cancer and chronic infection.
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Affiliation(s)
- Carlos Guijas
- Scripps Center for Metabolomics, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA; (C.G.); (L.H.); (E.M.B.)
| | - Lucy E. Horton
- Department of Immunology and Microbiology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA; (L.E.H.); (B.C.W.)
| | - Linh Hoang
- Scripps Center for Metabolomics, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA; (C.G.); (L.H.); (E.M.B.)
| | - Xavier Domingo-Almenara
- Computational Metabolomics for Systems Biology Lab, Omics Sciences Unit, Eurecat—Technology Centre of Catalonia, 08005 Barcelona, Catalonia, Spain;
| | - Elizabeth M. Billings
- Scripps Center for Metabolomics, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA; (C.G.); (L.H.); (E.M.B.)
| | - Brian C. Ware
- Department of Immunology and Microbiology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA; (L.E.H.); (B.C.W.)
| | - Brian Sullivan
- Department of Immunology and Microbiology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA; (L.E.H.); (B.C.W.)
- Correspondence: (B.S.); (G.S.); Tel.: +1-858-784-9425 (G.S.)
| | - Gary Siuzdak
- Scripps Center for Metabolomics, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA; (C.G.); (L.H.); (E.M.B.)
- Departments of Chemistry, Molecular, and Computational Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA
- Correspondence: (B.S.); (G.S.); Tel.: +1-858-784-9425 (G.S.)
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24
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Electroacupuncture at Zusanli (ST36), Guanyuan (CV4), and Qihai (CV6) Acupoints Regulates Immune Function in Patients with Sepsis via the PD-1 Pathway. BIOMED RESEARCH INTERNATIONAL 2022; 2022:7037497. [PMID: 35860804 PMCID: PMC9293513 DOI: 10.1155/2022/7037497] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 06/12/2022] [Accepted: 06/23/2022] [Indexed: 11/17/2022]
Abstract
Objective The present study is aimed at investigating the biochemical and clinical effects of electroacupuncture in patients with sepsis. Methods Patients with sepsis treated at Guangdong Provincial Hospital of Chinese Medicine from July 2019 to December 2020 were included. Patients were randomly assigned to treatment with routine Western medicine (WM group) or treatment with Western medicine plus electroacupuncture based on Western medicine (EA group). Indices associated with immune function and clinical efficacy were determined before and at 3 and 5 days after treatment. Indicators of immune function included the percentage of T lymphocyte subsets, natural killer (NK) cells, and soluble programmed death protein 1 (sPD-1) levels. Indicators of clinical efficacy included infection-related indicators in whole blood; levels of tumor necrosis factor-α (TNF-α), C-reactive protein (CRP), and interferon-γ (INF-γ); and assessments using acute physiology and chronic health evaluation-II (APACHE-II) and sequential organ failure assessment (SOFA) scores. Results Baseline data were not different between WM (N = 30) and EA groups (N = 30). At day 5 following treatment, the level of sPD-1 in the EA group was lower than that in the WM group. Proportions of CD3 + T lymphocytes, CD4 + T lymphocytes, and NK cells, the percentage of lymphocytes, and INF-γ levels in the EA group were significantly higher than those in the WM group. Compared with the WM group, the white blood cell count (WBC), percentage and count of neutrophils, ratio of neutrophils to lymphocytes, and levels of CRP and TNF-α were significantly decreased in the EA group 5 days after treatment. The APACHE-II score of the EA group was significantly lower than that of the WM group 5 days after treatment. Conclusion Electroacupuncture may regulate the immune function of patients with sepsis through the PD-1 pathway to achieve an anti-inflammatory state and improve clinical symptoms.
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Hensler E, Petros H, Gray CC, Chung CS, Ayala A, Fallon EA. The Neonatal Innate Immune Response to Sepsis: Checkpoint Proteins as Novel Mediators of This Response and as Possible Therapeutic/Diagnostic Levers. Front Immunol 2022; 13:940930. [PMID: 35860251 PMCID: PMC9289477 DOI: 10.3389/fimmu.2022.940930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 06/07/2022] [Indexed: 11/23/2022] Open
Abstract
Sepsis, a dysfunctional immune response to infection leading to life-threatening organ injury, represents a significant global health issue. Neonatal sepsis is disproportionately prevalent and has a cost burden of 2-3 times that of adult patients. Despite this, no widely accepted definition for neonatal sepsis or recommendations for management exist and those created for pediatric patients are significantly limited in their applicability to this unique population. This is in part due to neonates' reliance on an innate immune response (which is developmentally more prominent in the neonate than the immature adaptive immune response) carried out by dysfunctional immune cells, including neutrophils, antigen-presenting cells such as macrophages/monocytes, dendritic cells, etc., natural killer cells, and innate lymphoid regulatory cell sub-sets like iNKT cells, γδ T-cells, etc. Immune checkpoint inhibitors are a family of proteins with primarily suppressive/inhibitory effects on immune and tumor cells and allow for the maintenance of self-tolerance. During sepsis, these proteins are often upregulated and are thought to contribute to the long-term immunosuppression seen in adult patients. Several drugs targeting checkpoint inhibitors, including PD-1 and PD-L1, have been developed and approved for the treatment of various cancers, but no such therapeutics have been approved for the management of sepsis. In this review, we will comparatively discuss the role of several checkpoint inhibitor proteins, including PD-1, PD-L1, VISTA, and HVEM, in the immune response to sepsis in both adults and neonates, as well as posit how they may uniquely propagate their actions through the neonatal innate immune response. We will also consider the possibility of leveraging these proteins in the clinical setting as potential therapeutics/diagnostics that might aid in mitigating neonatal septic morbidity/mortality.
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Affiliation(s)
- Emily Hensler
- Division of Surgical Research, Department of Surgery, Rhode Island Hospital, Providence, RI, United States,Graduate Program in Biotechnology, Brown University, Providence, RI, United States
| | - Habesha Petros
- Graduate Program in Biotechnology, Brown University, Providence, RI, United States
| | - Chyna C. Gray
- Division of Surgical Research, Department of Surgery, Rhode Island Hospital, Providence, RI, United States,Graduate Program in Biotechnology, Brown University, Providence, RI, United States
| | - Chun-Shiang Chung
- Division of Surgical Research, Department of Surgery, Rhode Island Hospital, Providence, RI, United States,Graduate Program in Biotechnology, Brown University, Providence, RI, United States
| | - Alfred Ayala
- Division of Surgical Research, Department of Surgery, Rhode Island Hospital, Providence, RI, United States,Graduate Program in Biotechnology, Brown University, Providence, RI, United States,*Correspondence: Alfred Ayala,
| | - Eleanor A. Fallon
- Division of Surgical Research, Department of Surgery, Rhode Island Hospital, Providence, RI, United States,Graduate Program in Biotechnology, Brown University, Providence, RI, United States
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26
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Deng J, Wang R, Huang S, Ding J, Zhou W. Macrophages-regulating nanomedicines for sepsis therapy. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.06.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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27
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Li C, Wang X, Chen T, Li W, Yang Q. A Novel lncRNA Panel for Risk Stratification and Immune Landscape in Breast Cancer Patients. Int J Gen Med 2022; 15:5253-5272. [PMID: 35655656 PMCID: PMC9154001 DOI: 10.2147/ijgm.s366335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 05/18/2022] [Indexed: 11/30/2022] Open
Abstract
Purpose In recent years, breast cancer (BC) has been a primary cause of mortality in women. However, the underlying mechanisms remain to be elucidated. Accumulating evidence has supported the hypothesis that long noncoding RNAs (lncRNAs) play central roles in the progression of cancer. We aimed to construct an immune-related lncRNA panel to predict the prognosis of patients with BC and evaluate the immune features. Methods The expression profiles of patients with BC were obtained from The Cancer Genome Atlas (TCGA) database to screen the differentially expressed lncRNAs (DELs). Pearson’s correlation analysis was employed to filter the DELs related to the immune-associated genes. Univariate Cox regression, the LASSO algorithm, and multivariate Cox regression analyses were conducted to establish the model. Functional enrichment analyses and biological experiments were performed to explore the immune activity of the lncRNA panel. Results A four-immune-related lncRNA panel (IRLP) composed of AC022196.1, ARHGAP26-AS1, DPYD-AS1 and PURPL was established in TCGA training cohort. The prognostic accuracy of the predictive model was confirmed in TCGA internal validation cohort, TCGA entire cohort and Qilu external validation cohort. Bioinformatics analyses indicated that the IRLP had a close relationship with tumour infiltrating immune cells and immunomodulatory biomarkers. The biological functions of the four immune-related lncRNAs in BC were first investigated in vitro and in vivo. PURPL was indicated to play a central role in the regulation of macrophage recruitment and polarization via CCL2. Conclusion Our study identified IRLP as a reliable prognostic indicator with great potential for clinical application in personalized immunotherapy.
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Affiliation(s)
- Chen Li
- Department of Breast Surgery, General Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, People’s Republic of China
| | - Xiaolong Wang
- Department of Breast Surgery, General Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, People’s Republic of China
| | - Tong Chen
- Department of Breast Surgery, General Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, People’s Republic of China
| | - Wenhao Li
- Department of Breast Surgery, General Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, People’s Republic of China
| | - Qifeng Yang
- Department of Breast Surgery, General Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, People’s Republic of China
- Department of Pathology Tissue Bank, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, People’s Republic of China
- Research Institute of Breast Cancer, Shandong University, Jinan, Shandong, People’s Republic of China
- Correspondence: Qifeng Yang, Department of Breast Surgery, General Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, People’s Republic of China, Email
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刘 追, 陈 家, 周 寅, 阳 新, 陈 珂, 吕 兆, 周 斌, 李 园. [Expression and Role of PD-L1 in a Mouse Model of Necrotizing Enterocolitis]. SICHUAN DA XUE XUE BAO. YI XUE BAN = JOURNAL OF SICHUAN UNIVERSITY. MEDICAL SCIENCE EDITION 2022; 53:414-420. [PMID: 35642148 PMCID: PMC10409417 DOI: 10.12182/20220560105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Indexed: 06/15/2023]
Abstract
Objective To investigate the expression and role of programmed death ligand-1 (PD-L1) in a mouse model of necrotizing enterocolitis (NEC). Methods A total of 20 wild-type C57 BL/6 J mice were randomly assigned to the control and the model groups. Mice in the control group were breastfed, while mice in the model group were given lipopolysaccharide, formula feeding, hypoxia, and cold stimulation for NEC induction. Then, the intestines of the mice were collected in order to assess the pathological changes through HE staining, to examine PD-L1 expression and localization with immunofluorescence co-localization, and to evaluate intestinal PD-L1 expression with Western blot. Peripheral blood was collected for flow cytometry to examine leukocyte subpopulations and their PD-L1 expression. On the other hand, 14 PD-L1 (+/+) mice and 14 PD-L1 (-/-) mice were randomly divided into their respective genotype control groups and model groups. The same induction method as was already mentioned was adopted for the model groups. The intestines of the mice were collected for HE staining to evaluate the pathological change and peripheral blood was collected to examine the expression of inflammatory factors. Results The NEC mouse model was successfully constructed. PD-L1 was widely expressed in enterocytes and inflammatory cells in the mouse intestines and in T cells, monocytes, and neutrophils in peripheral blood. The expression of PD-L1 in NEC mouse intestines increased in comparison with that of the control group. In the peripheral blood of NEC mice, the proportion of T cells and monocytes and their PD-L1 expression showed no significant changes compared with those of the control group, while the proportion of neutrophils and their PD-L1 expression increased by about 140% and 150%, respectively, in comparison with those of the control group ( P<0.05). According to the results of the PD-L1 gene mouse experiment, the control groups of PD-L1 (+/+) mice and PD-L1 (-/-) mice showed no significant difference in their intestinal conditions and serum inflammatory factor levels, while the PD-L1 (-/-) NEC mouse had worse intestinal pathological changes and increased mean pathological scores compared with those of PD-L1 (+/+) NEC mouse ( P<0.05). In addition, serum interleukin (IL)-10 in PD-L1 (-/-) NEC mouse decreased by about 44% compared with that of PD-L1 (+/+) NEC mice, and chemokine (C-X-C motif) ligand 1/IL-6/IL-1β all increased by more than 25% (all P<0.05). Conclusion PD-L1 is widely expressed in inflammatory cells and enterocytes in mice. Knocking out PD-L1 aggravates the degree of NEC inflammation and intestinal pathological changes. PD-L1 plays a protective role by reducing inflammation in the pathogenesis of NEC, the mechanism of which may be related to the regulation of neutrophils/enterocytes.
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Affiliation(s)
- 追 刘
- 四川大学华西医院 小儿外科 (成都 610041)Department of Pediatric Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
- 四川大学华西医院 消化外科研究所 (成都 610041)Institute of Digestive Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - 家乐 陈
- 四川大学华西医院 小儿外科 (成都 610041)Department of Pediatric Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
- 四川大学华西医院 消化外科研究所 (成都 610041)Institute of Digestive Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - 寅 周
- 四川大学华西医院 小儿外科 (成都 610041)Department of Pediatric Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
- 四川大学华西医院 消化外科研究所 (成都 610041)Institute of Digestive Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - 新宇 阳
- 四川大学华西医院 小儿外科 (成都 610041)Department of Pediatric Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
- 四川大学华西医院 消化外科研究所 (成都 610041)Institute of Digestive Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - 珂玲 陈
- 四川大学华西医院 小儿外科 (成都 610041)Department of Pediatric Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - 兆瑛 吕
- 四川大学华西医院 小儿外科 (成都 610041)Department of Pediatric Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - 斌 周
- 四川大学华西医院 小儿外科 (成都 610041)Department of Pediatric Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - 园 李
- 四川大学华西医院 小儿外科 (成都 610041)Department of Pediatric Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
- 四川大学华西医院 消化外科研究所 (成都 610041)Institute of Digestive Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
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Genetic variants associated with sepsis. PLoS One 2022; 17:e0265052. [PMID: 35275946 PMCID: PMC8916629 DOI: 10.1371/journal.pone.0265052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 02/22/2022] [Indexed: 11/19/2022] Open
Abstract
Background The variable presentations and different phenotypes of sepsis suggest that risk of sepsis comes from many genes each having a small effect. The cumulative effect can be used to create individual risk profile. The purpose of this study was to create a polygenic risk score and determine the genetic variants associated with sepsis. Methods We sequenced ~14 million single nucleotide polymorphisms with a minimac imputation quality R2>0.3 and minor allele frequency >10−6 in patients with Sepsis-2 or Sepsis-3. Genome-wide association was performed using Firth bias-corrected logistic regression. Semi-parsimonious logistic regression was used to create polygenic risk scores and reduced regression to determine the genetic variants independently associated with sepsis. Findings 2261 patients had sepsis and 13,068 control patients did not. The polygenic risk scores had good discrimination: c-statistic = 0.752 ± 0.005 for Sepsis-2 and 0.752 ± 0.007 for Sepsis-3. We found 772 genetic variants associated with Sepsis-2 and 442 with Sepsis-3, p<0.01. After multivariate adjustment, 100 variants on 85 genes were associated with Sepsis-2 and 69 variants in 54 genes with Sepsis-3. Twenty-five variants were present in both the Sepsis-2 and Sepsis-3 groups out of 32 genes that were present in both groups. The other 7 genes had different variants present. Most variants had small effect sizes. Conclusions Sepsis-2 and Sepsis-3 have both separate and shared genetic variants. Most genetic variants have small effects sizes, but cumulatively, the polygenic risk scores have good discrimination.
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30
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Teh YC, Chooi MY, Liu D, Kwok I, Lai GC, Ayub Ow Yong L, Ng M, Li JLY, Tan Y, Evrard M, Tan L, Liong KH, Leong K, Goh CC, Chan AYJ, Shadan NB, Mantri CK, Hwang YY, Cheng H, Cheng T, Yu W, Tey HL, Larbi A, St John A, Angeli V, Ruedl C, Lee B, Ginhoux F, Chen SL, Ng LG, Ding JL, Chong SZ. Transitional premonocytes emerge in the periphery for host defense against bacterial infections. SCIENCE ADVANCES 2022; 8:eabj4641. [PMID: 35245124 PMCID: PMC8896792 DOI: 10.1126/sciadv.abj4641] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Circulating Ly6Chi monocytes often undergo cellular death upon exhaustion of their antibacterial effector functions, which limits their capacity for subsequent macrophage differentiation. This shrouds the understanding on how the host replaces the tissue-resident macrophage niche effectively during bacterial invasion to avert infection morbidity. Here, we show that proliferating transitional premonocytes (TpMos), an immediate precursor of mature Ly6Chi monocytes (MatMos), were mobilized into the periphery in response to acute bacterial infection and sepsis. TpMos were less susceptible to apoptosis and served as the main source of macrophage replenishment when MatMos were vulnerable toward bacteria-induced cellular death. Furthermore, TpMo and its derived macrophages contributed to host defense by balancing the proinflammatory cytokine response of MatMos. Consequently, adoptive transfer of TpMos improved the survival outcome of lethal sepsis. Our findings hence highlight a protective role for TpMos during bacterial infections and their contribution toward monocyte-derived macrophage heterogeneity in distinct disease outcomes.
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Affiliation(s)
- Ye Chean Teh
- Singapore Immunology Network (SIgN), A*STAR (Agency for Science, Technology and Research), Biopolis, Singapore 138648, Singapore
- Department of Biological Science, National University of Singapore (NUS), Singapore 117543, Singapore
| | - Ming Yao Chooi
- Singapore Immunology Network (SIgN), A*STAR (Agency for Science, Technology and Research), Biopolis, Singapore 138648, Singapore
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117545, Singapore
| | - Dehua Liu
- Singapore Immunology Network (SIgN), A*STAR (Agency for Science, Technology and Research), Biopolis, Singapore 138648, Singapore
| | - Immanuel Kwok
- Singapore Immunology Network (SIgN), A*STAR (Agency for Science, Technology and Research), Biopolis, Singapore 138648, Singapore
| | - Ghee Chuan Lai
- Singapore Immunology Network (SIgN), A*STAR (Agency for Science, Technology and Research), Biopolis, Singapore 138648, Singapore
| | - Liyana Ayub Ow Yong
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117545, Singapore
- Genome Institute of Singapore, A*STAR (Agency for Science, Technology and Research), Biopolis, Singapore 138672, Singapore
| | - Melissa Ng
- Singapore Immunology Network (SIgN), A*STAR (Agency for Science, Technology and Research), Biopolis, Singapore 138648, Singapore
| | - Jackson L. Y. Li
- Singapore Immunology Network (SIgN), A*STAR (Agency for Science, Technology and Research), Biopolis, Singapore 138648, Singapore
| | - Yingrou Tan
- Singapore Immunology Network (SIgN), A*STAR (Agency for Science, Technology and Research), Biopolis, Singapore 138648, Singapore
- National Skin Centre, 1 Mandalay Road, Singapore 308205, Singapore
| | - Maximilien Evrard
- Singapore Immunology Network (SIgN), A*STAR (Agency for Science, Technology and Research), Biopolis, Singapore 138648, Singapore
| | - Leonard Tan
- Singapore Immunology Network (SIgN), A*STAR (Agency for Science, Technology and Research), Biopolis, Singapore 138648, Singapore
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117545, Singapore
| | - Ka Hang Liong
- Singapore Immunology Network (SIgN), A*STAR (Agency for Science, Technology and Research), Biopolis, Singapore 138648, Singapore
| | - Keith Leong
- Singapore Immunology Network (SIgN), A*STAR (Agency for Science, Technology and Research), Biopolis, Singapore 138648, Singapore
| | - Chi Ching Goh
- Singapore Immunology Network (SIgN), A*STAR (Agency for Science, Technology and Research), Biopolis, Singapore 138648, Singapore
| | - Andrew Y. J. Chan
- Singapore Immunology Network (SIgN), A*STAR (Agency for Science, Technology and Research), Biopolis, Singapore 138648, Singapore
| | - Nurhidaya Binte Shadan
- Singapore Immunology Network (SIgN), A*STAR (Agency for Science, Technology and Research), Biopolis, Singapore 138648, Singapore
| | - Chinmay Kumar Mantri
- Program in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore 169857, Singapore
| | - You Yi Hwang
- Singapore Immunology Network (SIgN), A*STAR (Agency for Science, Technology and Research), Biopolis, Singapore 138648, Singapore
| | - Hui Cheng
- State Key Laboratory of Experimental Hematology, National Clinical Research Centre for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Tao Cheng
- State Key Laboratory of Experimental Hematology, National Clinical Research Centre for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Weimiao Yu
- Institute of Molecular and Cell Biology (IMCB), A*STAR (Agency for Science, Technology and Research), Singapore 138673, Singapore
| | - Hong Liang Tey
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117545, Singapore
- National Skin Centre, 1 Mandalay Road, Singapore 308205, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232, Singapore
| | - Anis Larbi
- Singapore Immunology Network (SIgN), A*STAR (Agency for Science, Technology and Research), Biopolis, Singapore 138648, Singapore
| | - Ashley St John
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117545, Singapore
- Program in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore 169857, Singapore
| | - Veronique Angeli
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117545, Singapore
| | - Christiane Ruedl
- School of Biological Sciences, Nanyang Technological University, Singapore 637551, Singapore
| | - Bernett Lee
- Singapore Immunology Network (SIgN), A*STAR (Agency for Science, Technology and Research), Biopolis, Singapore 138648, Singapore
| | - Florent Ginhoux
- Singapore Immunology Network (SIgN), A*STAR (Agency for Science, Technology and Research), Biopolis, Singapore 138648, Singapore
- Shanghai Institute of Immunology, Shanghai JiaoTong University School of Medicine, Shanghai 200025, China
| | - Swaine L. Chen
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117545, Singapore
- Genome Institute of Singapore, A*STAR (Agency for Science, Technology and Research), Biopolis, Singapore 138672, Singapore
| | - Lai Guan Ng
- Singapore Immunology Network (SIgN), A*STAR (Agency for Science, Technology and Research), Biopolis, Singapore 138648, Singapore
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117545, Singapore
- State Key Laboratory of Experimental Hematology, National Clinical Research Centre for Blood Diseases, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
- School of Biological Sciences, Nanyang Technological University, Singapore 637551, Singapore
- Corresponding author. (L.G.N.); (J.L.D.); (S.Z.C.)
| | - Jeak Ling Ding
- Department of Biological Science, National University of Singapore (NUS), Singapore 117543, Singapore
- Corresponding author. (L.G.N.); (J.L.D.); (S.Z.C.)
| | - Shu Zhen Chong
- Singapore Immunology Network (SIgN), A*STAR (Agency for Science, Technology and Research), Biopolis, Singapore 138648, Singapore
- Corresponding author. (L.G.N.); (J.L.D.); (S.Z.C.)
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Huang S, Liu D, Sun J, Zhang H, Zhang J, Wang Q, Gan L, Qu G, Qiu J, Deng J, Jiang J, Zeng L. Tim-3 regulates sepsis-induced immunosuppression by inhibiting the NF-κB signaling pathway in CD4 T cells. Mol Ther 2022; 30:1227-1238. [PMID: 34933101 PMCID: PMC8899604 DOI: 10.1016/j.ymthe.2021.12.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 10/23/2021] [Accepted: 12/16/2021] [Indexed: 11/30/2022] Open
Abstract
Immunosuppression in response to severe sepsis remains a serious human health concern. Evidence of sepsis-induced immunosuppression includes impaired T lymphocyte function, T lymphocyte depletion or exhaustion, increased susceptibility to opportunistic nosocomial infection, and imbalanced cytokine secretion. CD4 T cells play a critical role in cellular and humoral immune responses during sepsis. Here, using an RNA sequencing assay, we found that the expression of T cell-containing immunoglobulin and mucin domain-3 (Tim-3) on CD4 T cells in sepsis-induced immunosuppression patients was significantly elevated. Furthermore, the percentage of Tim-3+ CD4 T cells from sepsis patients was correlated with the mortality of sepsis-induced immunosuppression. Conditional deletion of Tim-3 in CD4 T cells and systemic Tim-3 deletion both reduced mortality in response to sepsis in mice by preserving organ function. Tim-3+ CD4 T cells exhibited reduced proliferative ability and elevated expression of inhibitory markers compared with Tim-3-CD4 T cells. Colocalization analyses indicated that HMGB1 was a ligand that binds to Tim-3 on CD4 T cells and that its binding inhibited the NF-κB signaling pathway in Tim-3+ CD4 T cells during sepsis-induced immunosuppression. Together, our findings reveal the mechanism of Tim-3 in regulating sepsis-induced immunosuppression and provide a novel therapeutic target for this condition.
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Affiliation(s)
- Siyuan Huang
- Department of Trauma Medical Center, Daping Hospital, State Key Laboratory of Trauma, Burns and Combined Injury, Army Medical University, Chongqing 400042, China
| | - Di Liu
- Department of Trauma Medical Center, Daping Hospital, State Key Laboratory of Trauma, Burns and Combined Injury, Army Medical University, Chongqing 400042, China
| | - Jianhui Sun
- Department of Trauma Medical Center, Daping Hospital, State Key Laboratory of Trauma, Burns and Combined Injury, Army Medical University, Chongqing 400042, China
| | - Huacai Zhang
- Department of Trauma Medical Center, Daping Hospital, State Key Laboratory of Trauma, Burns and Combined Injury, Army Medical University, Chongqing 400042, China
| | - Jing Zhang
- Department of Trauma Medical Center, Daping Hospital, State Key Laboratory of Trauma, Burns and Combined Injury, Army Medical University, Chongqing 400042, China
| | - Qiang Wang
- Department of Emergency, the Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang 550001, China
| | - Lebin Gan
- Department of Emergency, the Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang 550001, China
| | - Guoxin Qu
- Department of Emergency, the Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang 550001, China
| | - Jinchao Qiu
- Department of Emergency, the Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang 550001, China
| | - Jin Deng
- Department of Emergency, the Affiliated Hospital of Guizhou Medical University, Guizhou Medical University, Guiyang 550001, China
| | - Jianxin Jiang
- Department of Trauma Medical Center, Daping Hospital, State Key Laboratory of Trauma, Burns and Combined Injury, Army Medical University, Chongqing 400042, China.
| | - Ling Zeng
- Department of Trauma Medical Center, Daping Hospital, State Key Laboratory of Trauma, Burns and Combined Injury, Army Medical University, Chongqing 400042, China.
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Lotersztajn S, Riva A, Wang S, Dooley S, Chokshi S, Gao B. Inflammation in alcohol-associated liver disease progression. ZEITSCHRIFT FUR GASTROENTEROLOGIE 2022; 60:58-66. [PMID: 35042254 DOI: 10.1055/a-1714-9246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Chronic alcohol consumption induces stress and damage in alcohol metabolising hepatocytes, which leads to inflammatory and fibrogenic responses. Besides these direct effects, alcohol disrupts intestinal barrier functions and induces gut microbial dysbiosis, causing translocation of bacteria or microbial products through the gut mucosa to the liver and, which induce inflammation indirectly. Inflammation is one of the key drivers of alcohol-associated liver disease progression from steatosis to severe alcoholic hepatitis. The current standard of care for the treatment of severe alcoholic hepatitis is prednisolone, aiming to reduce inflammation. Prednisolone, however improves only short-term but not long-term survival rates in those patients, and even increases the risk for bacterial infections. Thus, recent studies focus on the exploration of more specific inflammatory targets for the treatment of severe alcoholic hepatitis. These comprise, among others interference with inflammatory cytokines, modulation of macrophage phenotypes or targeting of immune cell communication, as summarized in the present overview. Although several approaches give promising results in preclinical studies, data robustness and ability to transfer experimental results to human disease is still not sufficient for effective clinical translation.
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Affiliation(s)
- Sophie Lotersztajn
- Centre de Recherche sur l'Inflammation (CRI), Laboratoire d'Excellence Inflamex, Université de Paris, Paris, France
| | - Antonio Riva
- The Roger Williams Institute of Hepatology, Foundation for Liver Research affiliated with King's College London, King's College London, London, United Kingdom of Great Britain and Northern Ireland
| | - Sai Wang
- Department of Medicine II, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - Steven Dooley
- Department of Medicine II, Medical Faculty Mannheim, Heidelberg University, Heidelberg, Germany
| | - Shilpa Chokshi
- The Roger Williams Institute of Hepatology, Foundation for Liver Research affiliated with King's College London, King's College London, London, United Kingdom of Great Britain and Northern Ireland
| | - Bin Gao
- Laboratory of Liver diseases, National Institute on Alcohol Abuse and Alcoholism Laboratory of Liver Diseases, Bethesda, United States
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Fujita K, Takata I, Yoshida I, Takashima H, Sugiyama H. TP0586532, a non-hydroxamate LpxC inhibitor, reduces LPS release and IL-6 production both in vitro and in vivo. J Antibiot (Tokyo) 2022; 75:136-145. [PMID: 34987187 PMCID: PMC8728711 DOI: 10.1038/s41429-021-00498-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 12/06/2021] [Accepted: 12/09/2021] [Indexed: 12/13/2022]
Abstract
UDP-3-O-acyl-N-acetylglucosamine deacetylase (LpxC) is an essential enzyme in the biosynthesis of Lipid A, an active component of lipopolysaccharide (LPS), from UDP-3-O-acyl-N-acetylglicosamine. LPS is a major component of the cell surface of Gram-negative bacteria. LPS is known to be one of causative factors of sepsis and has been associated with high mortality in septic shock. TP0586532 is a novel non-hydroxamate LpxC enzyme inhibitor. In this study, we examined the inhibitory effect of TP0586532 on the LPS release from Klebsiella pneumoniae both in vitro and in vivo. Our results confirmed the inhibitory effect of TP0586532 on LPS release from the pathogenic bacterial species. On the other hand, meropenem and ciprofloxacin increase the level of LPS release. Furthermore, the effects of TP0586532 on LPS release and interleukin (IL)-6 production in the lung were determined using a murine model of pneumonia caused by K. pneumoniae. As observed in the in vitro study, TP0586532 showed the marked inhibitory effect on LPS release in the lungs, whereas meropenem- and ciprofloxacin-treated mice showed higher levels of LPS release and IL-6 production in the lungs as compared to those in the lungs of vehicle-treated mice. Moreover, TP0586532 used in combination with meropenem and ciprofloxacin attenuated the LPS release and IL-6 production induced by meropenem and ciprofloxacin in the lung. These results indicate that the inhibitory effect of TP0586532 on LPS release from pathogenic bacteria might be of benefit in patients with sepsis.
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Affiliation(s)
- Kiyoko Fujita
- Pharmacology Laboratotries, Taisho Pharmaceutical Co., Ltd, Saitama, Japan
| | - Iichiro Takata
- Pharmacology Laboratotries, Taisho Pharmaceutical Co., Ltd, Saitama, Japan
| | - Ippei Yoshida
- Pharmacology Laboratotries, Taisho Pharmaceutical Co., Ltd, Saitama, Japan
| | - Hajime Takashima
- Chemistry Laboratories, Taisho Pharmaceutical Co., Ltd, Saitama, Japan
| | - Hiroyuki Sugiyama
- Pharmacology Laboratotries, Taisho Pharmaceutical Co., Ltd, Saitama, Japan. .,Medical information, Taisho Pharmaceutical Co., Ltd, Tokyo, Japan.
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34
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Geng S, Pradhan K, Li L. Signal-Strength and History-Dependent Innate Immune Memory Dynamics in Health and Disease. Handb Exp Pharmacol 2022; 276:23-41. [PMID: 34085119 DOI: 10.1007/164_2021_485] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Innate immunity exhibits memory characteristics, reflected not only in selective recognition of external microbial or internal damage signals, but more importantly in history and signal-strength dependent reprogramming of innate leukocytes characterized by priming, tolerance, and exhaustion. Key innate immune cells such as monocytes and neutrophils can finely discern and attune to the duration and intensity of external signals through rewiring of internal signaling circuitries, giving rise to a vast array of discreet memory phenotypes critically relevant to managing tissue homeostasis as well as diverse repertoires of inflammatory conditions. This review will highlight recent advances in this rapidly expanding field of innate immune programming and memory, as well as its translational implication in the pathophysiology of selected inflammatory diseases.
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Affiliation(s)
- Shuo Geng
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA, USA
| | - Kisha Pradhan
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA, USA
| | - Liwu Li
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA, USA.
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35
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Mellinghoff SC, Thelen M, Bruns C, Garcia-Marquez M, Hartmann P, Lammertz T, Lehmann J, Nowag A, Stemler J, Wennhold K, Cornely OA, von Bergwelt-Baildon MS, Schlößer HA. T-cells of invasive candidiasis patients show patterns of T-cell-exhaustion suggesting checkpoint blockade as treatment option. J Infect 2021; 84:237-247. [PMID: 34921845 DOI: 10.1016/j.jinf.2021.12.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 12/02/2021] [Accepted: 12/07/2021] [Indexed: 12/11/2022]
Abstract
OBJECTIVE Recent data imply that strengthening host immunity by checkpoint inhibition improves outcome in invasive fungal infections (IFI), particularly in candidiasis. METHODS To assess T-cell exhaustion in this context, we compared peripheral blood mononuclear cells (PBMCs) and serum samples of patients with invasive Candida albicans infection (IC, n = 21) to PBMCs or tumor-infiltrating lymphocytes (TILs) from cancer patients (n = 14) and PBMCs of healthy controls (n = 20). Type and differentiation of lymphocytes and expression of 29 immune-regulatory molecules were analyzed by flow cytometry. C. albicans specific responses were assessed by FluoroSpot (n = 8) and antibody measurement (n = 14). RESULTS Fractions and phenotypes of lymphocyte subsets in PBMCs of IC patients were similar compared to PBMCs of controls, while they were different in TILs. PBMCs of patients with IC showed increased expression of immune-checkpoint molecules. The pattern of upregulated molecules was similar to TILs, but not present in PBMCs of control cancer patients. Fractions of T-cells expressing PD-1 and TIGIT were higher in IC patients that died. FluoroSpot analysis showed a Candida-specific IFN-y or IL-2 response in 5/8 patients, enhanced by addition of nivolumab in vitro. CONCLUSIONS Together with preclinical data and preliminary evidence of clinical efficacy in mucormycosis, our results support clinical evaluation of immune-checkpoint inhibition in IFI treatment. TRIAL REGISTRATION NCT04533087; retrospectively registered on August 31, 2020.
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Affiliation(s)
- Sibylle C Mellinghoff
- Department I of Internal Medicine, Excellence Centre for Medical Mycology (ECMM), University of Cologne, Faculty of Medicine and University Hospital Cologne, Kerpener Str. 62, Cologne 50937, Germany; Translational Research, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany; Partner Site Bonn-Cologne, German Centre for Infection Research (DZIF), Cologne, Germany.
| | - Martin Thelen
- Centre for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Christiane Bruns
- Department of General, Visceral, Cancer and Transplantation Surgery, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Maria Garcia-Marquez
- Centre for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Pia Hartmann
- Wisplinghoff Laboratories, Cologne, Germany; Immunology and Hygiene (IMMIH), University of Cologne Institute for Medical Microbiology, Cologne, Germany
| | - Tatjana Lammertz
- Department I of Internal Medicine, Excellence Centre for Medical Mycology (ECMM), University of Cologne, Faculty of Medicine and University Hospital Cologne, Kerpener Str. 62, Cologne 50937, Germany
| | - Jonas Lehmann
- Centre for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Angela Nowag
- Wisplinghoff Laboratories, Cologne, Germany; Immunology and Hygiene (IMMIH), University of Cologne Institute for Medical Microbiology, Cologne, Germany
| | - Jannik Stemler
- Department I of Internal Medicine, Excellence Centre for Medical Mycology (ECMM), University of Cologne, Faculty of Medicine and University Hospital Cologne, Kerpener Str. 62, Cologne 50937, Germany; Translational Research, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany; Partner Site Bonn-Cologne, German Centre for Infection Research (DZIF), Cologne, Germany
| | - Kerstin Wennhold
- Centre for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
| | - Oliver A Cornely
- Department I of Internal Medicine, Excellence Centre for Medical Mycology (ECMM), University of Cologne, Faculty of Medicine and University Hospital Cologne, Kerpener Str. 62, Cologne 50937, Germany; Translational Research, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany; Partner Site Bonn-Cologne, German Centre for Infection Research (DZIF), Cologne, Germany; Clinical Trials Centre Cologne, ZKS Köln, Cologne, Germany
| | - Michael S von Bergwelt-Baildon
- Department of Medicine III, University Hospital, Ludwig Maximilian University Munich, Munich, Germany; Laboratory for Translational Cancer Immunology, Gene Centre, Ludwig Maximilian University Munich, Munich, Germany; German Cancer Consortium (DKTK), Partner site Munich, Munich, Germany
| | - Hans A Schlößer
- Centre for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany; Department of General, Visceral, Cancer and Transplantation Surgery, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
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36
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Udovicic I, Stanojevic I, Djordjevic D, Zeba S, Rondovic G, Abazovic T, Lazic S, Vojvodic D, To K, Abazovic D, Khan W, Surbatovic M. Immunomonitoring of Monocyte and Neutrophil Function in Critically Ill Patients: From Sepsis and/or Trauma to COVID-19. J Clin Med 2021; 10:jcm10245815. [PMID: 34945111 PMCID: PMC8706110 DOI: 10.3390/jcm10245815] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 11/27/2021] [Accepted: 12/01/2021] [Indexed: 12/15/2022] Open
Abstract
Immune cells and mediators play a crucial role in the critical care setting but are understudied. This review explores the concept of sepsis and/or injury-induced immunosuppression and immuno-inflammatory response in COVID-19 and reiterates the need for more accurate functional immunomonitoring of monocyte and neutrophil function in these critically ill patients. in addition, the feasibility of circulating and cell-surface immune biomarkers as predictors of infection and/or outcome in critically ill patients is explored. It is clear that, for critically ill, one size does not fit all and that immune phenotyping of critically ill patients may allow the development of a more personalized approach with tailored immunotherapy for the specific patient. In addition, at this point in time, caution is advised regarding the quality of evidence of some COVID-19 studies in the literature.
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Affiliation(s)
- Ivo Udovicic
- Clinic of Anesthesiology and Intensive Therapy, Military Medical Academy, Crnotravska 17, 11000 Belgrade, Serbia; (I.U.); (D.D.); (S.Z.); (G.R.); (T.A.)
- Faculty of Medicine of the Military Medical Academy, University of Defence, Crnotravska 17, 11000 Belgrade, Serbia; (I.S.); (S.L.); (D.V.)
| | - Ivan Stanojevic
- Faculty of Medicine of the Military Medical Academy, University of Defence, Crnotravska 17, 11000 Belgrade, Serbia; (I.S.); (S.L.); (D.V.)
- Institute for Medical Research, Military Medical Academy, Crnotravska 17, 11000 Belgrade, Serbia
| | - Dragan Djordjevic
- Clinic of Anesthesiology and Intensive Therapy, Military Medical Academy, Crnotravska 17, 11000 Belgrade, Serbia; (I.U.); (D.D.); (S.Z.); (G.R.); (T.A.)
- Faculty of Medicine of the Military Medical Academy, University of Defence, Crnotravska 17, 11000 Belgrade, Serbia; (I.S.); (S.L.); (D.V.)
| | - Snjezana Zeba
- Clinic of Anesthesiology and Intensive Therapy, Military Medical Academy, Crnotravska 17, 11000 Belgrade, Serbia; (I.U.); (D.D.); (S.Z.); (G.R.); (T.A.)
- Faculty of Medicine of the Military Medical Academy, University of Defence, Crnotravska 17, 11000 Belgrade, Serbia; (I.S.); (S.L.); (D.V.)
| | - Goran Rondovic
- Clinic of Anesthesiology and Intensive Therapy, Military Medical Academy, Crnotravska 17, 11000 Belgrade, Serbia; (I.U.); (D.D.); (S.Z.); (G.R.); (T.A.)
- Faculty of Medicine of the Military Medical Academy, University of Defence, Crnotravska 17, 11000 Belgrade, Serbia; (I.S.); (S.L.); (D.V.)
| | - Tanja Abazovic
- Clinic of Anesthesiology and Intensive Therapy, Military Medical Academy, Crnotravska 17, 11000 Belgrade, Serbia; (I.U.); (D.D.); (S.Z.); (G.R.); (T.A.)
| | - Srdjan Lazic
- Faculty of Medicine of the Military Medical Academy, University of Defence, Crnotravska 17, 11000 Belgrade, Serbia; (I.S.); (S.L.); (D.V.)
- Institute of Epidemiology, Military Medical Academy, Crnotravska 17, 11000 Belgrade, Serbia
| | - Danilo Vojvodic
- Faculty of Medicine of the Military Medical Academy, University of Defence, Crnotravska 17, 11000 Belgrade, Serbia; (I.S.); (S.L.); (D.V.)
- Institute for Medical Research, Military Medical Academy, Crnotravska 17, 11000 Belgrade, Serbia
| | - Kendrick To
- Division of Trauma & Orthopaedic Surgery, University of Cambridge, Addenbrooke’s Hospital, Cambridge CB2 2QQ, UK; (K.T.); (W.K.)
| | - Dzihan Abazovic
- Emergency Medical Centar of Montenegro, Vaka Djurovica bb, 81000 Podgorica, Montenegro;
| | - Wasim Khan
- Division of Trauma & Orthopaedic Surgery, University of Cambridge, Addenbrooke’s Hospital, Cambridge CB2 2QQ, UK; (K.T.); (W.K.)
| | - Maja Surbatovic
- Clinic of Anesthesiology and Intensive Therapy, Military Medical Academy, Crnotravska 17, 11000 Belgrade, Serbia; (I.U.); (D.D.); (S.Z.); (G.R.); (T.A.)
- Faculty of Medicine of the Military Medical Academy, University of Defence, Crnotravska 17, 11000 Belgrade, Serbia; (I.S.); (S.L.); (D.V.)
- Correspondence: ; Tel.: +381-11-2665-125
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Splenic T lymphocytes induce the formation of immunosuppressive neutrophils through IFN-γ in sepsis. Inflamm Res 2021; 71:81-91. [PMID: 34841450 DOI: 10.1007/s00011-021-01524-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Accepted: 11/13/2021] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Despite many advances in treatment, the prognosis of patients with sepsis still remains poor. Polymorphonuclear leukocytes (PMNs) are the first line of defense against infection. This study aimed to reveal the reason and mechanism of the production of PD-L1+ PMNs in sepsis. METHODS Cecal ligation and perforation mouse model was established to simulate sepsis. And PMNs were treated for 4 h, 12 h with or without 100 ng/mL (IFN-γ) for further gene sequencing. PD-L1, PD-1, Ly6G, and CD3 were detected by multiplexed immunofluorescence. In addition, expression of PD-L1 and function of PMNs were assessed by flow cytometry. Serum and cell culture supernatant were measured with ELISA assays. Western blot was used to verify the JAK2/STAT1 pathway. RESULTS Our study demonstrates that PMNs are the main immune cells with high expression of PD-L1 during sepsis, and these cells, therefore, play a critical role in immunosuppression. In vivo studies demonstrated a specific interaction between PD-L1+ PMNs and PD-1+ T cells. In vitro studies further demonstrated that IFN-γ induced the production of PD-L1+ PMNs through the JAK2/STAT1 pathway. In addition, Fedratinib, an inhibitor of Jak2, was shown to significantly reduce the expression of PD-L1 in neutrophils. CONCLUSIONS These data demonstrate that secretion of IFN-γ by splenic T lymphocytes induces the production of PD-L1 + PMNs through the JAK2/STAT1 pathway in sepsis.
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von Knethen A, Rodriguez-Barbosa JI. Editorial: The Roles of Checkpoint Inhibitors in Inflammatory Diseases. Front Immunol 2021; 12:795495. [PMID: 34777402 PMCID: PMC8581460 DOI: 10.3389/fimmu.2021.795495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 10/15/2021] [Indexed: 11/13/2022] Open
Affiliation(s)
- Andreas von Knethen
- Department of Anaesthesiology, Intensive Care Medicine and Pain Therapy, University Hospital Frankfurt, Frankfurt, Germany
| | - Jose-Ignacio Rodriguez-Barbosa
- Transplantation Immunobiology, School of Biology and Biotechnology, Institute of Molecular Biology, Genomics and Proteomics, University of Leon, Leon, Spain
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Effect of the Lymphocyte Activation Gene 3 Polymorphism rs951818 on Mortality and Disease Progression in Patients with Sepsis-A Prospective Genetic Association Study. J Clin Med 2021; 10:jcm10225302. [PMID: 34830585 PMCID: PMC8621793 DOI: 10.3390/jcm10225302] [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: 10/13/2021] [Revised: 11/10/2021] [Accepted: 11/11/2021] [Indexed: 12/19/2022] Open
Abstract
(1) Background: Sepsis is a leading cause of death and a global public health problem. Accordingly, deciphering the underlying molecular mechanisms of this disease and the determinants of its morbidity and mortality is pivotal. This study examined the effect of the rs951818 SNP of the negative costimulatory lymphocyte-activation gene 3 (LAG-3) on sepsis mortality and disease severity. (2) Methods: 707 consecutive patients with sepsis were prospectively enrolled into the present study from three surgical ICUs at University Medical Center Goettingen. Both 28- and 90-day mortality were analyzed as the primary outcome, while parameters of disease severity served as secondary endpoints. (3) Results: In the Kaplan-Meier analysis LAG-3 rs951818 AA-homozygote patients showed a significantly lower 28-day mortality (17.3%) compared to carriers of the C-allele (23.7%, p = 0.0476). In addition, these patients more often received invasive mechanical ventilation (96%) during the course of disease than C-allele carriers (92%, p = 0.0466). (4) Conclusions: Genetic profiling of LAG-3 genetic variants alone or in combination with other genetic biomarkers may represent a promising approach for risk stratification of patients with sepsis. Patient-individual therapeutic targeting of immune checkpoints, such as LAG-3, may be a future component of sepsis therapy. Further detailed investigations in clinically relevant sepsis models are necessary.
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40
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Jiang X, Yuan Y, Tang L, Wang J, Liu Q, Zou X, Duan L. Comprehensive Pan-Cancer Analysis of the Prognostic and Immunological Roles of the METTL3/lncRNA-SNHG1/miRNA-140-3p/UBE2C Axis. Front Cell Dev Biol 2021; 9:765772. [PMID: 34858987 PMCID: PMC8631498 DOI: 10.3389/fcell.2021.765772] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Accepted: 10/15/2021] [Indexed: 01/01/2023] Open
Abstract
Growing evidence has demonstrated that UBE2C plays a critical role in cancer progression, but there is no study focusing on the prognosis, upstream regulation mechanism, and immunological roles of UBE2C across diverse tumor types. In this study, we found that UBE2C was elevated in this human pan-cancer analysis, and high expression of UBE2C was correlated with poor prognosis. In addition, UBE2C expression was markedly associated with tumor mutation burden (TMB), microsatellite instability (MSI), immune cell infiltration, and diverse drug sensitivities. Finally, we showed that the METTL3/SNHG1/miRNA-140-3p axis could potentially regulate UBE2C expression. N(6)-Methyladenosine (m6A) modifications improved the stability of methylated SNHG1 transcripts by decreasing the rate of RNA degradation, which lead to upregulation of SNHG1 in non-small cell lung cancer (NSCLC). In vitro functional experiments showed that SNHG1, as a competing endogenous RNA, sponges miR-140-3p to increase UBE2C expression in NSCLC cell lines. Our study elucidates the clinical importance and regulatory mechanism of the METTL3/SNHG1/miRNA-140-3p/UBE2C axis in NSCLC and provides a prognostic indicator, as well as a promising therapeutic target for patients with NSCLC.
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Affiliation(s)
- Xiulin Jiang
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences and Yunnan Province, Kunming Institute of Zoology, Kunming, China
| | - Yixiao Yuan
- Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Lin Tang
- Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Juan Wang
- Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Qianqian Liu
- Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Xiaolan Zou
- Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Lincan Duan
- Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
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41
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Pradhan K, Yi Z, Geng S, Li L. Development of Exhausted Memory Monocytes and Underlying Mechanisms. Front Immunol 2021; 12:778830. [PMID: 34777396 PMCID: PMC8583871 DOI: 10.3389/fimmu.2021.778830] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 10/14/2021] [Indexed: 01/04/2023] Open
Abstract
Pathogenic inflammation and immuno-suppression are cardinal features of exhausted monocytes increasingly recognized in septic patients and murine models of sepsis. However, underlying mechanisms responsible for the generation of exhausted monocytes have not been addressed. In this report, we examined the generation of exhausted primary murine monocytes through prolonged and repetitive challenges with high dose bacterial endotoxin lipopolysaccharide (LPS). We demonstrated that repetitive LPS challenges skew monocytes into the classically exhausted Ly6Chi population, and deplete the homeostatic non-classical Ly6Clo population, reminiscent of monocyte exhaustion in septic patients. scRNAseq analyses confirmed the expansion of Ly6Chi monocyte cluster, with elevation of pathogenic inflammatory genes previously observed in human septic patients. Furthermore, we identified CD38 as an inflammatory mediator of exhausted monocytes, associated with a drastic depletion of cellular NAD+; elevation of ROS; and compromise of mitochondria respiration, representative of septic monocytes. Mechanistically, we revealed that STAT1 is robustly elevated and sustained in LPS-exhausted monocytes, dependent upon the TRAM adaptor of the TLR4 pathway. TRAM deficient monocytes are largely resistant to LPS-mediated exhaustion, and retain the non-classical homeostatic features. Together, our current study addresses an important yet less-examined area of monocyte exhaustion, by providing phenotypic and mechanistic insights regarding the generation of exhausted monocytes.
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Affiliation(s)
- Kisha Pradhan
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA, United States
| | - Ziyue Yi
- Graduate Program of Genetics, Biotechnology and Computational Biology, Virginia Tech, Blacksburg, VA, United States
| | - Shuo Geng
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA, United States
| | - Liwu Li
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA, United States
- Graduate Program of Genetics, Biotechnology and Computational Biology, Virginia Tech, Blacksburg, VA, United States
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42
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Immune checkpoints and reproductive immunology: Pioneers in the future therapy of infertility related Disorders? Int Immunopharmacol 2021; 99:107935. [PMID: 34304000 DOI: 10.1016/j.intimp.2021.107935] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 06/27/2021] [Accepted: 06/28/2021] [Indexed: 01/01/2023]
Abstract
As co-stimulatory receptors, immune checkpoint molecules are found on the surface of various immune cells and transduce inhibitory signals following ligand binding. The most studied members in this regard include PD-1, TIM-3, and CTLA-4. The physiological part immune checkpoints possess is the prevention of dangerous immune attacks towards self-antigens throughout an immune response, which takes place through the negative regulation of the effector immune cells, through the induction of T-cell exhaustion, for instance. It has recently been suggested that each checkpoint reduces immunoactivation via distinct intracellular mechanisms of signaling. Regulators of immune checkpoints are supposed to participate actively in immune defense mechanisms against infections, preventing autoimmunity, transplantation, and tumor immune evasion. In pregnancy, as an active immunotolerance mechanism which is also natural, the maternal immune system encounters two simultaneous challenges; in addition to accepting the semi-allogeneic fetus, the maternal immune system should also prevent infections. In this regard, the part immune checkpoint molecules possess is particularly interesting. Herein, the current understanding of such part in reproductive immunology is described.
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Van der Merwe S, Chokshi S, Bernsmeier C, Albillos A. The multifactorial mechanisms of bacterial infection in decompensated cirrhosis. J Hepatol 2021; 75 Suppl 1:S82-S100. [PMID: 34039494 DOI: 10.1016/j.jhep.2020.11.029] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 11/17/2020] [Accepted: 11/20/2020] [Indexed: 02/08/2023]
Abstract
Infections, due to a dysfunctional immune response, pose a great risk to patients with decompensated cirrhosis and herald the beginning of the terminal phase of this disease. Infections typically result from breaches in innate immune barriers and inadequate clearance by immune cells. This leads to bacterial and bacterial product translocation to the systemic circulation, which is already primed by ongoing hepatic inflammation in patients with cirrhosis, who are particularly prone to developing organ failure in the presence of an infection. Early identification of bacterial infection, along with the prompt use of appropriate antibiotics, have reduced the mortality associated with certain infections in patients with decompensated cirrhosis. Judicious use of antibiotic therapy remains imperative given the emergence of multidrug-resistant infections in the cirrhotic population. Important research over the last few years has identified molecular targets on immune cells that may enhance their function, and theoretically prevent infections. Clinical trials are ongoing to delineate the beneficial effects of targeted molecules from their off-target effects. Herein, we review the mechanisms that predispose patients with cirrhosis to bacterial infections, the clinical implications of infections and potential targets for the prevention or treatment of infections in this vulnerable population.
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Affiliation(s)
- Schalk Van der Merwe
- Department of Gastroenterology and Hepatology, University hospital, Leuven, Belgium; Laboratory of Hepatology, University of Leuven, Belgium.
| | - Shilpa Chokshi
- Institute of Hepatology, Foundation for Liver Research, London, UK; Division of Transplantation, Immunology and Mucosal Biology, Faculty of Life Sciences and Medicine, King's College, London, United Kingdom
| | - Christine Bernsmeier
- Department of Biomedicine, University of Basel, Switzerland; University Centre for Gastrointestinal and Liver Diseases, Basel, Switzerland
| | - Agustin Albillos
- Department of Gastroenterology and Hepatology, Hospital Universitario Ramón y Cajal, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), CIBEREHD, Universidad de Alcalá, Madrid, Spain
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Rubio-Garrido M, Avendaño-Ortiz J, Ndarabu A, Rubio C, Reina G, López-Collazo E, Holguín Á. Dried Blood Specimens as an Alternative Specimen for Immune Response Monitoring During HIV Infection: A Proof of Concept and Simple Method in a Pediatric Cohort. Front Med (Lausanne) 2021; 8:678850. [PMID: 34211989 PMCID: PMC8239183 DOI: 10.3389/fmed.2021.678850] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 05/07/2021] [Indexed: 01/23/2023] Open
Abstract
Programs to prevent mother-to-child HIV transmission do not reduce the number of infants exposed during pregnancy and breastfeeding. HIV-exposed but uninfected children (HEU) present higher risk of morbidity and mortality than HIV-unexposed and uninfected children (UU). In this line, the study of immune biomarkers in HIV could improve prediction of disease progression, allowing to diminish comorbidity risk. Dried blood specimens (DBS) are an alternative to serum for collecting and transporting samples in countries with limited infrastructure and especially interesting for groups such as pediatrics, where obtaining a high sample volume is challenging. This study explores the usefulness of DBS for immune profile monitoring in samples from 30 children under clinical follow-up in Kinshasa: 10 HIV-infected (HIV+), 10 HEU, and 10 UU. We have measured the gene expression levels of 12 immune and inflammatory markers (CD14, IL-6, TNFα, HVEM, B7.1, HIF-1α, Siglec-10, IRAK-M, CD163, B7H5, PD-L1, and Galectin-9) in DBS samples by reverse transcription of total RNA and RT-qPCR. Principal component analysis, Kruskal-Wallis test, and Mann-Whitney test were performed in order to study group differences. HIV+ children presented significantly higher levels of seven biomarkers (CD14, IL-6 HVEM, B7.1, Siglec-10, HIF-1α, and CD163) than the UU group. In HEU, we found seven biomarkers significantly elevated (CD14, IL-6, HVEM, B7.1, Siglec-10, HIF-1α, and IRAK-M) vs. UU. Six biomarkers (CD14, IL-6, HVEM, B7.1, Siglec-10, and HIF-1α) showed a significantly higher expression in both HIV+ and HEU vs. UU, with HVEM and CD14 being significantly overexpressed among HIV+ vs. HEU. Our data reveal the utility of DBS for immune response monitoring. Moreover, significant differences in specific biomarker expression across groups strongly suggest the effect of HIV infection and/or HIV exposure on these immune biomarkers' expressions.
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Affiliation(s)
- Marina Rubio-Garrido
- HIV-1 Molecular Epidemiology Laboratory, Microbiology Department, Ramón y Cajal University Hospital- Instituto Ramón y Cajal para la Investigación Sanitaria (IRYCIS) and Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública - Red de Investigación Traslacional en Infectología Pediátrica (CIBERESP-RITIP), Madrid, Spain
| | - José Avendaño-Ortiz
- Innate Immunity Group, Hospital La Paz Institute for Health Research, La Paz University Hospital, Madrid, Spain.,Tumor Immunology Laboratory and Innate Immunity Group, Hospital La Paz Institute for Health Research, La Paz University Hospital, Madrid, Spain
| | | | - Carolina Rubio
- Tumor Immunology Laboratory and Innate Immunity Group, Hospital La Paz Institute for Health Research, La Paz University Hospital, Madrid, Spain
| | | | - Eduardo López-Collazo
- Innate Immunity Group, Hospital La Paz Institute for Health Research, La Paz University Hospital, Madrid, Spain.,Tumor Immunology Laboratory and Innate Immunity Group, Hospital La Paz Institute for Health Research, La Paz University Hospital, Madrid, Spain
| | - África Holguín
- HIV-1 Molecular Epidemiology Laboratory, Microbiology Department, Ramón y Cajal University Hospital- Instituto Ramón y Cajal para la Investigación Sanitaria (IRYCIS) and Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública - Red de Investigación Traslacional en Infectología Pediátrica (CIBERESP-RITIP), Madrid, Spain
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45
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Sabbatino F, Conti V, Franci G, Sellitto C, Manzo V, Pagliano P, De Bellis E, Masullo A, Salzano FA, Caputo A, Peluso I, Zeppa P, Scognamiglio G, Greco G, Zannella C, Ciccarelli M, Cicala C, Vecchione C, Filippelli A, Pepe S. PD-L1 Dysregulation in COVID-19 Patients. Front Immunol 2021; 12:695242. [PMID: 34163490 PMCID: PMC8215357 DOI: 10.3389/fimmu.2021.695242] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 05/24/2021] [Indexed: 12/13/2022] Open
Abstract
The COVID-19 pandemic has reached direct and indirect medical and social consequences with a subset of patients who rapidly worsen and die from severe-critical manifestations. As a result, there is still an urgent need to identify prognostic biomarkers and effective therapeutic approaches. Severe-critical manifestations of COVID-19 are caused by a dysregulated immune response. Immune checkpoint molecules such as Programmed death-1 (PD-1) and its ligand programmed death-ligand 1 (PD-L1) play an important role in regulating the host immune response and several lines of evidence underly the role of PD-1 modulation in COVID-19. Here, by analyzing blood sample collection from both hospitalized COVID-19 patients and healthy donors, as well as levels of PD-L1 RNA expression in a variety of model systems of SARS-CoV-2, including in vitro tissue cultures, ex-vivo infections of primary epithelial cells and biological samples obtained from tissue biopsies and blood sample collection of COVID-19 and healthy individuals, we demonstrate that serum levels of PD-L1 have a prognostic role in COVID-19 patients and that PD-L1 dysregulation is associated to COVID-19 pathogenesis. Specifically, PD-L1 upregulation is induced by SARS-CoV-2 in infected epithelial cells and is dysregulated in several types of immune cells of COVID-19 patients including monocytes, neutrophils, gamma delta T cells and CD4+ T cells. These results have clinical significance since highlighted the potential role of PD-1/PD-L1 axis in COVID-19, suggest a prognostic role of PD-L1 and provide a further rationale to implement novel clinical studies in COVID-19 patients with PD-1/PD-L1 inhibitors.
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Affiliation(s)
- Francesco Sabbatino
- Department of Medicine, Surgery and Dentistry, "Scuola Medica Salernitana", University of Salerno, Baronissi (SA), Italy.,Oncology Unit, San Giovanni di Dio e Ruggi D'Aragona University Hospital, Salerno, Italy
| | - Valeria Conti
- Department of Medicine, Surgery and Dentistry, "Scuola Medica Salernitana", University of Salerno, Baronissi (SA), Italy.,Pharmacology Unit, San Giovanni di Dio e Ruggi D'Aragona University Hospital, Salerno, Italy
| | - Gianluigi Franci
- Department of Medicine, Surgery and Dentistry, "Scuola Medica Salernitana", University of Salerno, Baronissi (SA), Italy.,Clinical Pathology and Microbiology Unit, San Giovanni di Dio e Ruggi D'Aragona University Hospital, Salerno, Italy
| | - Carmine Sellitto
- Department of Medicine, Surgery and Dentistry, "Scuola Medica Salernitana", University of Salerno, Baronissi (SA), Italy.,Pharmacology Unit, San Giovanni di Dio e Ruggi D'Aragona University Hospital, Salerno, Italy
| | - Valentina Manzo
- Department of Medicine, Surgery and Dentistry, "Scuola Medica Salernitana", University of Salerno, Baronissi (SA), Italy.,Pharmacology Unit, San Giovanni di Dio e Ruggi D'Aragona University Hospital, Salerno, Italy
| | - Pasquale Pagliano
- Department of Medicine, Surgery and Dentistry, "Scuola Medica Salernitana", University of Salerno, Baronissi (SA), Italy.,Infectious Disease Unit, San Giovanni di Dio e Ruggi D'Aragona University Hospital, Salerno, Italy
| | - Emanuela De Bellis
- Department of Medicine, Surgery and Dentistry, "Scuola Medica Salernitana", University of Salerno, Baronissi (SA), Italy.,Pharmacology Unit, San Giovanni di Dio e Ruggi D'Aragona University Hospital, Salerno, Italy
| | - Alfonso Masullo
- Infectious Disease Unit, San Giovanni di Dio e Ruggi D'Aragona University Hospital, Salerno, Italy
| | - Francesco Antonio Salzano
- Department of Medicine, Surgery and Dentistry, "Scuola Medica Salernitana", University of Salerno, Baronissi (SA), Italy.,Otolaryngology Unit, San Giovanni di Dio e Ruggi D'Aragona University Hospital, Salerno, Italy
| | - Alessandro Caputo
- Department of Medicine, Surgery and Dentistry, "Scuola Medica Salernitana", University of Salerno, Baronissi (SA), Italy.,Pathology Unit, San Giovanni di Dio e Ruggi D'Aragona University Hospital, Salerno, Italy
| | - Ilaria Peluso
- Hematology Unit, AORN Cardarelli Hospital, Naples, Italy
| | - Pio Zeppa
- Department of Medicine, Surgery and Dentistry, "Scuola Medica Salernitana", University of Salerno, Baronissi (SA), Italy.,Pathology Unit, San Giovanni di Dio e Ruggi D'Aragona University Hospital, Salerno, Italy
| | - Giosuè Scognamiglio
- Pathology Unit, Istituto Nazionale Tumori, IRCSS, "Fondazione G Pascale", Naples, Italy
| | - Giuseppe Greco
- Section of Microbiology and Virology, University Hospital "Luigi Vanvitelli", Naples, Italy
| | - Carla Zannella
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Michele Ciccarelli
- Department of Medicine, Surgery and Dentistry, "Scuola Medica Salernitana", University of Salerno, Baronissi (SA), Italy.,Cardiology Unit, San Giovanni di Dio e Ruggi D'Aragona University Hospital, Salerno, Italy
| | - Claudia Cicala
- Laboratory of Immunoregulation, National Institute of Allergy and Infectious Diseases, Bethesda, MD, United States
| | - Carmine Vecchione
- Department of Medicine, Surgery and Dentistry, "Scuola Medica Salernitana", University of Salerno, Baronissi (SA), Italy.,Vascular Pathophysiology Unit, IRCCS Neuromed, Pozzilli, Italy
| | - Amelia Filippelli
- Department of Medicine, Surgery and Dentistry, "Scuola Medica Salernitana", University of Salerno, Baronissi (SA), Italy.,Pharmacology Unit, San Giovanni di Dio e Ruggi D'Aragona University Hospital, Salerno, Italy
| | - Stefano Pepe
- Department of Medicine, Surgery and Dentistry, "Scuola Medica Salernitana", University of Salerno, Baronissi (SA), Italy.,Oncology Unit, San Giovanni di Dio e Ruggi D'Aragona University Hospital, Salerno, Italy
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Bayat M, Asemani Y, Mohammadi MR, Sanaei M, Namvarpour M, Eftekhari R. An overview of some potential immunotherapeutic options against COVID-19. Int Immunopharmacol 2021; 95:107516. [PMID: 33765610 PMCID: PMC7908848 DOI: 10.1016/j.intimp.2021.107516] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Revised: 02/15/2021] [Accepted: 02/15/2021] [Indexed: 02/07/2023]
Abstract
After the advent of the novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV2) in the late 2019, the resulting severe and pernicious syndrome (COVID-19) immediately was deployed all around the world. To date, despite relentless efforts to control the disease by drug repurposing, there is no approved specific therapy for COVID-19. Given the role of innate and acquired immune components in the control and elimination of viral infections and inflammatory mutilations during SARS-CoV2 pathogenesis, immunotherapeutic strategies appear to be beneficent. Passive immunotherapies such as convalescent plasma, which has received much attention especially in severe cases, as well as suppressing inflammatory cytokines, interferon administration, inhibition of kinases and complement cascade, virus neutralization with key engineered products, cell-based therapies, immunomodulators and anti-inflammatory drugs are among the key immunotherapeutic approaches to deal with COVID-19, which is discussed in this review. Also, details of leading COVID-19 vaccine candidates as the most potent immunotherapy have been provided. However, despite salient improvements, there is still a lack of completely assured vaccines for universal application. Therefore, adopting proper immunotherapies according to the cytokine pattern and involved immune responses, alongside engineered biologics specially ACE2-Fc to curb SARS-CoV2 infection until achieving a tailored vaccine is probably the best strategy to better manage this pandemic. Therefore, gaining knowledge about the mechanism of action, potential targets, as well as the effectiveness of immune-based approaches to confront COVID-19 in the form of a well-ordered review study is highly momentous.
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Affiliation(s)
- Maryam Bayat
- Department of Immunology, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Yahya Asemani
- Department of Immunology, Shahid Beheshti University of Medical Sciences, Tehran, Iran,Corresponding author at: Department of Immunology, Medical School, Shahid Beheshti University of Medical Sciences, P.O. Box: 1985717443, Tehran, Iran
| | - Mohammad Reza Mohammadi
- Department of Bacteriology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Mahsa Sanaei
- Department of Environmental, Polymer and Organic Chemistry, School of Chemistry, Damghan University, Damghan, Iran
| | - Mozhdeh Namvarpour
- Department of Immunology, Shahid Sadoughi University of Medical Science and services, Yazd, Iran
| | - Reyhaneh Eftekhari
- Department of Microbiology, Faculty of Biology, Semnan University, Semnan, Iran
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47
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Phares TW, Kotraiah V, Chung CS, Unsinger J, Mazer M, Remy KE, Browne CD, Buontempo P, Mansour M, Pannucci J, Ayala A, Hotchkiss RS, Gutierrez GM. A Peptide-Based Checkpoint Immunomodulator Alleviates Immune Dysfunction in Murine Polymicrobial Sepsis. Shock 2021; 55:806-815. [PMID: 33065715 PMCID: PMC8284559 DOI: 10.1097/shk.0000000000001682] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
ABSTRACT Sepsis-induced immunosuppression involves both innate and adaptive immunity and is associated with the increased expression of checkpoint inhibitors, such as programmed cell-death protein 1 (PD-1). The expression of PD-1 is associated with poor outcomes in septic patients, and in models of sepsis, blocking PD-1 or its ligands with antibodies increased survival and alleviated immune suppression. While inhibitory antibodies are effective, they can lead to immune-related adverse events (irAEs), in part due to continual blockade of the PD-1 pathway, resulting in hyperactivation of the immune response. Peptide-based therapeutics are an alternative drug modality that provide a rapid pharmacokinetic profile, reducing the incidence of precipitating irAEs. We recently reported that the potent, peptide-based PD-1 checkpoint antagonist, LD01, improves T-cell responses. The goal of the current study was to determine whether LD01 treatment improved survival, bacterial clearance, and host immunity in the cecal-ligation and puncture (CLP)-induced murine polymicrobial sepsis model. LD01 treatment of CLP-induced sepsis significantly enhanced survival and decreased bacterial burden. Altered survival was associated with improved macrophage phagocytic activity and T-cell production of interferon-γ. Further, myeloperoxidase levels and esterase-positive cells were significantly reduced in LD01-treated mice. Taken together, these data establish that LD01 modulates host immunity and is a viable therapeutic candidate for alleviating immunosuppression that characterizes sepsis and other infectious diseases.
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Affiliation(s)
- Timothy W. Phares
- Explorations in Global Health (ExGloH), Leidos Inc, Frederick, Maryland
| | - Vinayaka Kotraiah
- Explorations in Global Health (ExGloH), Leidos Inc, Frederick, Maryland
| | | | - Jacqueline Unsinger
- Department of Anesthesiology, Washington University School of Medicine, St. Louis, Missouri
| | - Monty Mazer
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri
| | - Kenneth E. Remy
- Department of Anesthesiology, Washington University School of Medicine, St. Louis, Missouri
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri
- Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri
| | | | - Peter Buontempo
- Explorations in Global Health (ExGloH), Leidos Inc, Frederick, Maryland
| | - Marc Mansour
- MM Scientific Consultants, Inc, Halifax, Nova Scotia, Canada
| | - James Pannucci
- Explorations in Global Health (ExGloH), Leidos Inc, Frederick, Maryland
| | - Alfred Ayala
- Lifespan-Rhode Island Hospital, Providence, Rhode Island
| | - Richard S. Hotchkiss
- Department of Anesthesiology, Washington University School of Medicine, St. Louis, Missouri
- Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri
- Department of Surgery, Washington University School of Medicine, St. Louis, Missouri
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KPNB1 Inhibitor Importazole Reduces Ionizing Radiation-Increased Cell Surface PD-L1 Expression by Modulating Expression and Nuclear Import of IRF1. Curr Issues Mol Biol 2021; 43:153-162. [PMID: 34069326 PMCID: PMC8929148 DOI: 10.3390/cimb43010013] [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: 04/22/2021] [Revised: 05/16/2021] [Accepted: 05/17/2021] [Indexed: 12/21/2022] Open
Abstract
Programmed death-ligand 1 (PD-L1) is an immune checkpoint molecule that negatively regulates anti-tumor immunity. Recent reports indicate that anti-cancer treatments, such as radiation therapy, increase PD-L1 expression on the surface of tumor cells. We previously reported that the nuclear transport receptor karyopherin-β1 (KPNB1) is involved in radiation-increased PD-L1 expression on head-and-neck squamous cell carcinoma cells. However, the mechanisms underlying KPNB1-mediated, radiation-increased PD-L1 expression remain unknown. Thus, the mechanisms of radiation-increased, KPNB1-mediated PD-L1 expression were investigated by focusing on the transcription factor interferon regulatory factor 1 (IRF1), which is reported to regulate PD-L1 expression. Western blot analysis showed that radiation increased IRF1 expression. In addition, flow cytometry showed that IRF1 knockdown decreased cell surface PD-L1 expression of irradiated cells but had a limited effect on non-irradiated cells. These findings suggest that the upregulation of IRF1 after irradiation is required for radiation-increased PD-L1 expression. Notably, immunofluorescence and western blot analyses revealed that KPNB1 inhibitor importazole not only diffused nuclear localization of IRF1 but also decreased IRF1 upregulation by irradiation, which attenuated radiation-increased PD-L1 expression. Taken together, these findings suggest that KPNB1 mediates radiation-increased cell surface PD-L1 expression through both upregulation and nuclear import of IRF1.
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Sun S, Chen Y, Liu Z, Tian R, Liu J, Chen E, Mao E, Pan T, Qu H. Serum-soluble PD-L1 may be a potential diagnostic biomarker in sepsis. Scand J Immunol 2021; 94:e13049. [PMID: 33934376 DOI: 10.1111/sji.13049] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 04/22/2021] [Accepted: 04/28/2021] [Indexed: 12/22/2022]
Abstract
To investigate whether serum-soluble PD-L1 (sPD-L1) is a potential biomarker for identifying sepsis. This study enrolled 64 septic patients, 29 patients with acute appendicitis, 33 patients with acute pancreatitis and 30 healthy volunteers. Sepsis was defined according to the Sepsis 3.0 criteria.[1] The associated clinical parameters were recorded, blood samples were collected on the first day of diagnosis, and serum sPD-L1 levels were measured using enzyme-linked immunosorbent assays. Compared with the control group, a significant increase in sPD-L1 levels was observed in patients with sepsis (n = 64). Increased sPD-L1 expression correlated strongly with increased clinical inflammatory values (CRP, PCT and WBC) and decreased immunological functional parameters (CD3+ , CD4+ and CD8+ cell counts). The area under the ROC curve (AUC) for sPD-L1 in combination with the sequential organ failure assessment (SOFA) score was superior to the AUC for either sPD-L1 or SOFA score in regard to the diagnosis of sepsis. sPD-L1 may represent a valuable biomarker for the diagnosis of sepsis.
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Affiliation(s)
- Shaoqiong Sun
- Department of Critical Care Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yang Chen
- Department of Critical Care Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhaojun Liu
- Department of Critical Care Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Rui Tian
- Department of Critical Care Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jialin Liu
- Department of Critical Care Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Erzhen Chen
- Department of Emergency, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Enqiang Mao
- Department of Emergency, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Tingting Pan
- Department of Critical Care Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hongping Qu
- Department of Critical Care Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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50
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Sun L, Gang X, Li Z, Zhao X, Zhou T, Zhang S, Wang G. Advances in Understanding the Roles of CD244 (SLAMF4) in Immune Regulation and Associated Diseases. Front Immunol 2021; 12:648182. [PMID: 33841431 PMCID: PMC8024546 DOI: 10.3389/fimmu.2021.648182] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 02/24/2021] [Indexed: 12/16/2022] Open
Abstract
Proteins in the signaling lymphocytic activating molecule (SLAM) family play crucial roles in regulating the immune system. CD244 (SLAMF4) is a protein in this family, and is also a member of the CD2 subset of the immunoglobulin (Ig) superfamily. CD244 is a cell surface protein expressed by NK cells, T cells, monocytes, eosinophils, myeloid-derived suppressor cells, and dendritic cells. CD244 binds to the ligand CD48 on adjacent cells and transmits stimulatory or inhibitory signals that regulate immune function. In-depth studies reported that CD244 functions in many immune-related diseases, such as autoimmune diseases, infectious diseases, and cancers, and its action is essential for the onset and progression of these diseases. The discovery of these essential roles of CD244 suggests it has potential as a prognostic indicator or therapeutic target. This review describes the molecular structure and function of CD244 and its roles in various immune cells and immune-related diseases.
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Affiliation(s)
| | | | | | | | | | | | - Guixia Wang
- Department of Endocrinology and Metabolism, The First Hospital of Jilin University, Changchun, China
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