1
|
Mao C, Eberle K, Chen X, Zhou Y, Li J, Xin H, Gao W. FcRider: a recombinant Fc nanoparticle with endogenous adjuvant activities for hybrid immunization. Antib Ther 2024; 7:295-306. [PMID: 39381134 PMCID: PMC11456856 DOI: 10.1093/abt/tbae023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Revised: 07/15/2024] [Accepted: 08/21/2024] [Indexed: 10/10/2024] Open
Abstract
Active immunization (vaccination) induces long-lasting immunity with memory, which takes weeks to months to develop. Passive immunization (transfer of neutralizing antibodies) provides immediate protection, yet with high cost and effects being comparatively short-lived. No currently approved adjuvants are compatible with formulations to combine active and passive immunizations, not to mention their huge disparities in administration routes and dosage. To solve this, we engineered the Fc fragment of human IgG1 into a hexamer nanoparticle and expressed its afucosylated form in Fut8-/- CHO cells, naming it "FcRider." FcRider is highly soluble with long-term stability, easily produced at high levels equivalent to those of therapeutic antibodies, and is amenable to conventional antibody purification schemes. Most importantly, FcRider possesses endogenous adjuvant activities. Using SWHEL B cell receptor (BCR) transgenic mice, we found that HEL-FcRider induced GL7+ germinal center B cells and HEL-specific IgG. Similarly, immunizing mice with UFO-BG-FcRider, a fusion containing the stabilized human immunodeficiency virus-1 (HIV-1) Env protein as immunogen, promoted somatic hypermutation and generation of long CDR3 of the IgG heavy chains. Intramuscular injection of (Fba + Met6)3-FcRider, a fusion with two peptide epitopes from Candida albicans cell surface, stimulated strong antigen-specific IgG titers. In three different models, we showed that afucosylated FcRider functions as a multivalent immunogen displayer and stimulates antigen-specific B cells without any exogenous adjuvant. As an antibody derivative, afucosylated FcRider could be a novel platform combining vaccines and therapeutic antibodies, integrating active and passive immunizations into single-modality "hybrid immunization" to provide complete and long-lasting protection against infections, and may open new avenues in cancer immunotherapy as well.
Collapse
Affiliation(s)
- Changchuin Mao
- Antagen Pharmaceuticals, Inc., Canton, MA 02021, United States
| | - Karen Eberle
- Department of Microbiology and Immunology, Louisiana State University Health Science Center, New Orleans, LA 70112, United States
| | - Xiaojie Chen
- Base&Byte Biotechnology Co., Ltd., Changping District, Beijing 102206, PR China
| | - Yiming Zhou
- Base&Byte Biotechnology Co., Ltd., Changping District, Beijing 102206, PR China
| | - Jun Li
- Department of Biological Sciences, Florida International University, Miami, FL 33199, United States
| | - Hong Xin
- Department of Microbiology and Immunology, Louisiana State University Health Science Center, New Orleans, LA 70112, United States
| | - Wenda Gao
- Antagen Pharmaceuticals, Inc., Canton, MA 02021, United States
| |
Collapse
|
2
|
Hovd AMK, Nayar S, Smith CG, Kanapathippillai P, Iannizzotto V, Barone F, Fenton KA, Pedersen HL. Podoplanin expressing macrophages and their involvement in tertiary lymphoid structures in mouse models of Sjögren's disease. Front Immunol 2024; 15:1455238. [PMID: 39355243 PMCID: PMC11442383 DOI: 10.3389/fimmu.2024.1455238] [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: 06/26/2024] [Accepted: 08/21/2024] [Indexed: 10/03/2024] Open
Abstract
Tertiary lymphoid structures (TLSs) are formed in tissues targeted by chronic inflammation processes, such as infection and autoimmunity. In Sjögren's disease, the organization of immune cells into TLS is an important part of disease progression. Here, we investigated the dynamics of tissue resident macrophages in the induction and expansion of salivary gland TLS. We induced Sjögren's disease by cannulation of the submandibular glands of C57BL/6J mice with LucAdV5. In salivary gland tissues from these mice, we analyzed the different macrophage populations prior to cannulation on day 0 and on day 2, 5, 8, 16 and 23 post-infection using multicolored flow cytometry, mRNA gene analysis, and histological evaluation of tissue specific macrophages. The histological localization of macrophages in the LucAdV5 induced inflamed salivary glands was compared to salivary glands of NZBW/F1 lupus prone mice, a spontaneous mouse model of Sjögren's disease. The evaluation of the dynamics and changes in macrophage phenotype revealed that the podoplanin (PDPN) expressing CX3CR1+ macrophage population was increased in the salivary gland tissue during LucAdV5 induced inflammation. This PDPN+ CX3CR1+ macrophage population was, together with PDPN+CD206+ macrophages, observed to be localized in the parenchyma during the acute inflammation phase as well as surrounding the TLS structure in the later stages of inflammation. This suggests a dual role of tissue resident macrophages, contributing to both proinflammatory and anti-inflammatory processes, as well as their possible interactions with other immune cells within the inflamed tissue. These macrophages may be involved with lymphoid neogenesis, which is associated with disease severity and progression. In conclusion, our study substantiates the involvement of proinflammatory and regulatory macrophages in autoimmune pathology and underlines the possible multifaceted functions of macrophages in lymphoid cell organization.
Collapse
Affiliation(s)
- Aud-Malin Karlsson Hovd
- Department of Medical Biology, Faculty of Health Sciences, UiT The Arctic University of Norway, Tromsø, Norway
| | - Saba Nayar
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - Charlotte G. Smith
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - Premasany Kanapathippillai
- Department of Medical Biology, Faculty of Health Sciences, UiT The Arctic University of Norway, Tromsø, Norway
| | - Valentina Iannizzotto
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - Francesca Barone
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, United Kingdom
| | - Kristin Andreassen Fenton
- Department of Medical Biology, Faculty of Health Sciences, UiT The Arctic University of Norway, Tromsø, Norway
| | - Hege Lynum Pedersen
- Department of Medical Biology, Faculty of Health Sciences, UiT The Arctic University of Norway, Tromsø, Norway
| |
Collapse
|
3
|
Escalona E, Olate-Briones A, Albornoz-Muñoz S, Bonacic-Doric E, Rodríguez-Arriaza F, Herrada AA, Escobedo N. Neu1 deficiency and fibrotic lymph node microenvironment lead to imbalance in M1/M2 macrophage polarization. Front Immunol 2024; 15:1462853. [PMID: 39346907 PMCID: PMC11427323 DOI: 10.3389/fimmu.2024.1462853] [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: 07/10/2024] [Accepted: 08/26/2024] [Indexed: 10/01/2024] Open
Abstract
Macrophages play a pivotal role in tissue homeostasis, pathogen defense, and inflammation resolution. M1 and M2 macrophage phenotypes represent two faces in a spectrum of responses to microenvironmental changes, crucial in both physiological and pathological conditions. Neuraminidase 1 (Neu1), a lysosomal and cell surface sialidase responsible for removing terminal sialic acid residues from glycoconjugates, modulates several macrophage functions, including phagocytosis and Toll-like receptor (TLR) signaling. Current evidence suggests that Neu1 expression influences M1/M2 macrophage phenotype alterations in the context of cardiovascular diseases, indicating a potential role for Neu1 in macrophage polarization. For this reason, we investigated the impact of Neu1 deficiency on macrophage polarization in vitro and in vivo. Using bone marrow-derived macrophages (BMDMs) and peritoneal macrophages from Neu1 knockout (Neu1-/- ) mice and wild-type (WT) littermate controls, we demonstrated that Neu1-deficient macrophages exhibit an aberrant M2-like phenotype, characterized by elevated macrophage mannose receptor 1 (MMR/CD206) expression and reduced responsiveness to M1 stimuli. This M2-like phenotype was also observed in vivo in peritoneal and splenic macrophages. However, lymph node (LN) macrophages from Neu1-/- mice exhibited phenotypic alterations with reduced CD206 expression. Further analysis revealed that peripheral LNs from Neu1-/- mice were highly fibrotic, with overexpression of transforming growth factor-beta 1 (TGF-β1) and hyperactivated TGF-β signaling in LN macrophages. Consistently, TGF-β1 was found to alter M1/M2 macrophage polarization in vitro. Our findings showed that Neu1 deficiency prompts macrophages towards an M2 phenotype and that microenvironmental changes, particularly increased TGF-β1 in fibrotic tissues such as peripheral LNs in Neu1-/- mice, further influence M1/M2 macrophage polarization, highlighting its sensitivity to the local microenvironment. Therapeutic interventions targeting Neu1 or TGF-β signaling pathways may offer the potential to regulate macrophage behavior across different diseases.
Collapse
MESH Headings
- Animals
- Mice, Knockout
- Mice
- Macrophages/immunology
- Macrophages/metabolism
- Lymph Nodes/immunology
- Lymph Nodes/metabolism
- Lymph Nodes/pathology
- Neuraminidase/deficiency
- Neuraminidase/genetics
- Neuraminidase/metabolism
- Fibrosis
- Cellular Microenvironment
- Mice, Inbred C57BL
- Macrophage Activation
- Lectins, C-Type/metabolism
- Lectins, C-Type/genetics
- Lectins, C-Type/deficiency
- Macrophages, Peritoneal/immunology
- Macrophages, Peritoneal/metabolism
- Cells, Cultured
- Signal Transduction
- Receptors, Cell Surface/genetics
- Receptors, Cell Surface/metabolism
- Receptors, Cell Surface/deficiency
- Mannose Receptor
- Phenotype
- Transforming Growth Factor beta1/metabolism
Collapse
Affiliation(s)
- Emilia Escalona
- Lymphatic Vasculature and Inflammation Research Laboratory, Instituto de Ciencias Biomédicas, Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Talca, Chile
| | - Alexandra Olate-Briones
- Lymphatic Vasculature and Inflammation Research Laboratory, Instituto de Ciencias Biomédicas, Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Talca, Chile
| | - Sofía Albornoz-Muñoz
- Lymphatic Vasculature and Inflammation Research Laboratory, Instituto de Ciencias Biomédicas, Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Talca, Chile
| | - Enzo Bonacic-Doric
- Lymphatic Vasculature and Inflammation Research Laboratory, Instituto de Ciencias Biomédicas, Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Talca, Chile
| | - Francisca Rodríguez-Arriaza
- Lymphatic Vasculature and Inflammation Research Laboratory, Instituto de Ciencias Biomédicas, Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Talca, Chile
| | - Andrés A Herrada
- Lymphatic Vasculature and Inflammation Research Laboratory, Instituto de Ciencias Biomédicas, Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Talca, Chile
| | - Noelia Escobedo
- Lymphatic Vasculature and Inflammation Research Laboratory, Instituto de Ciencias Biomédicas, Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Talca, Chile
| |
Collapse
|
4
|
Long Y, Ang KS, Sethi R, Liao S, Heng Y, van Olst L, Ye S, Zhong C, Xu H, Zhang D, Kwok I, Husna N, Jian M, Ng LG, Chen A, Gascoigne NRJ, Gate D, Fan R, Xu X, Chen J. Deciphering spatial domains from spatial multi-omics with SpatialGlue. Nat Methods 2024; 21:1658-1667. [PMID: 38907114 PMCID: PMC11399094 DOI: 10.1038/s41592-024-02316-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 05/20/2024] [Indexed: 06/23/2024]
Abstract
Advances in spatial omics technologies now allow multiple types of data to be acquired from the same tissue slice. To realize the full potential of such data, we need spatially informed methods for data integration. Here, we introduce SpatialGlue, a graph neural network model with a dual-attention mechanism that deciphers spatial domains by intra-omics integration of spatial location and omics measurement followed by cross-omics integration. We demonstrated SpatialGlue on data acquired from different tissue types using different technologies, including spatial epigenome-transcriptome and transcriptome-proteome modalities. Compared to other methods, SpatialGlue captured more anatomical details and more accurately resolved spatial domains such as the cortex layers of the brain. Our method also identified cell types like spleen macrophage subsets located at three different zones that were not available in the original data annotations. SpatialGlue scales well with data size and can be used to integrate three modalities. Our spatial multi-omics analysis tool combines the information from complementary omics modalities to obtain a holistic view of cellular and tissue properties.
Collapse
Affiliation(s)
- Yahui Long
- Institute of Molecular and Cell Biology (IMCB), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Kok Siong Ang
- Institute of Molecular and Cell Biology (IMCB), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Raman Sethi
- Binformatics Institute (BII), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Sha Liao
- BGI-Shenzhen, Shenzhen, China
- BGI Research-Southwest, BGI, Chongqing, China
| | - Yang Heng
- BGI-Shenzhen, Shenzhen, China
- BGI Research-Southwest, BGI, Chongqing, China
| | - Lynn van Olst
- The Ken & Ruth Davee Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Shuchen Ye
- Binformatics Institute (BII), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Chengwei Zhong
- Institute of Molecular and Cell Biology (IMCB), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Hang Xu
- Binformatics Institute (BII), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Di Zhang
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA
| | - Immanuel Kwok
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Nazihah Husna
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
- Immunology Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Min Jian
- BGI-Shenzhen, Shenzhen, China
- BGI Research Asia-Pacific, BGI, Singapore, Singapore
| | - Lai Guan Ng
- Shanghai Immune Therapy Institute, Shanghai Jiao Tong University School of Medicine Affiliated Renji Hospital, Shanghai, China
| | - Ao Chen
- BGI-Shenzhen, Shenzhen, China
- BGI Research-Southwest, BGI, Chongqing, China
- JFL-BGI STOmics Center, Jinfeng Laboratory, Chongqing, China
| | - Nicholas R J Gascoigne
- Immunology Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Cancer Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - David Gate
- The Ken & Ruth Davee Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Rong Fan
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA
| | - Xun Xu
- BGI-Shenzhen, Shenzhen, China
| | - Jinmiao Chen
- Institute of Molecular and Cell Biology (IMCB), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore.
- Binformatics Institute (BII), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore.
- Immunology Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.
- Center for Computational Biology and Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore.
| |
Collapse
|
5
|
Hu Y, Tzeng SY, Cheng L, Lin J, Villabona-Rueda A, Yu S, Li S, Schneiderman Z, Zhu Y, Ma J, Wilson DR, Shannon SR, Warren T, Rui Y, Qiu C, Kavanagh EW, Luly KM, Zhang Y, Korinetz N, D’Alessio FR, Wang TH, Kokkoli E, Reddy SK, Luijten E, Green JJ, Mao HQ. Supramolecular assembly of polycation/mRNA nanoparticles and in vivo monocyte programming. Proc Natl Acad Sci U S A 2024; 121:e2400194121. [PMID: 39172792 PMCID: PMC11363337 DOI: 10.1073/pnas.2400194121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 07/19/2024] [Indexed: 08/24/2024] Open
Abstract
Size-dependent phagocytosis is a well-characterized phenomenon in monocytes and macrophages. However, this size effect for preferential gene delivery to these important cell targets has not been fully exploited because commonly adopted stabilization methods for electrostatically complexed nucleic acid nanoparticles, such as PEGylation and charge repulsion, typically arrest the vehicle size below 200 nm. Here, we bridge the technical gap in scalable synthesis of larger submicron gene delivery vehicles by electrostatic self-assembly of charged nanoparticles, facilitated by a polymer structurally designed to modulate internanoparticle Coulombic and van der Waals forces. Specifically, our strategy permits controlled assembly of small poly(β-amino ester)/messenger ribonucleic acid (mRNA) nanoparticles into particles with a size that is kinetically tunable between 200 and 1,000 nm with high colloidal stability in physiological media. We found that assembled particles with an average size of 400 nm safely and most efficiently transfect monocytes following intravenous administration and mediate their differentiation into macrophages in the periphery. When a CpG adjuvant is co-loaded into the particles with an antigen mRNA, the monocytes differentiate into inflammatory dendritic cells and prime adaptive anticancer immunity in the tumor-draining lymph node. This platform technology offers a unique ligand-independent, particle-size-mediated strategy for preferential mRNA delivery and enables therapeutic paradigms via monocyte programming.
Collapse
Affiliation(s)
- Yizong Hu
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD21218
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD21205
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD21231
| | - Stephany Y. Tzeng
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD21205
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD21231
| | - Leonardo Cheng
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD21218
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD21205
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD21231
| | - Jinghan Lin
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD21218
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD21231
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD21218
| | - Andres Villabona-Rueda
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD21205
| | - Shuai Yu
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL60208
| | - Sixuan Li
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD21218
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD21218
| | - Zachary Schneiderman
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD21218
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD21218
| | - Yining Zhu
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD21218
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD21205
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD21231
| | - Jingyao Ma
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD21218
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD21231
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD21218
| | - David R. Wilson
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD21205
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD21231
| | - Sydney R. Shannon
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD21205
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD21231
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD21287
| | - Tiarra Warren
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD21205
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD21231
| | - Yuan Rui
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD21205
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD21231
| | - Chenhu Qiu
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD21218
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD21218
| | - Erin W. Kavanagh
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD21205
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD21231
- Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD21287
| | - Kathryn M. Luly
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD21205
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD21231
| | - Yicheng Zhang
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD21218
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD21231
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD21218
| | - Nicole Korinetz
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD21218
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD21218
| | - Franco R. D’Alessio
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD21205
| | - Tza-Huei Wang
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD21218
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD21205
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD21218
| | - Efrosini Kokkoli
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD21218
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD21218
| | - Sashank K. Reddy
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD21218
- Department of Plastic and Reconstructive Surgery, Johns Hopkins University School of Medicine, Baltimore, MD21287
| | - Erik Luijten
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL60208
- Department of Engineering Sciences and Applied Mathematics, Northwestern University, Evanston, IL60208
- Department of Chemistry, Northwestern University, Evanston, IL60208
- Department of Physics and Astronomy, Northwestern University, Evanston, IL60208
| | - Jordan J. Green
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD21218
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD21205
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD21231
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD21218
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD21218
| | - Hai-Quan Mao
- Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD21218
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD21205
- Translational Tissue Engineering Center, Johns Hopkins University School of Medicine, Baltimore, MD21231
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD21218
| |
Collapse
|
6
|
Wang Z, Shi H, Silveira PA, Mithieux SM, Wong WC, Liu L, Pham NTH, Hawkett BS, Wang Y, Weiss AS. Tropoelastin modulates systemic and local tissue responses to enhance wound healing. Acta Biomater 2024; 184:54-67. [PMID: 38871204 DOI: 10.1016/j.actbio.2024.06.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 05/13/2024] [Accepted: 06/06/2024] [Indexed: 06/15/2024]
Abstract
Wound healing is facilitated by biomaterials-based grafts and substantially impacted by orchestrated inflammatory responses that are essential to the normal repair process. Tropoelastin (TE) based materials are known to shorten the period for wound repair but the mechanism of anti-inflammatory performance is not known. To explore this, we compared the performance of the gold standard Integra Dermal Regeneration Template (Integra), polyglycerol sebacate (PGS), and TE blended with PGS, in a murine full-thickness cutaneous wound healing study. Systemically, blending with TE favorably increased the F4/80+ macrophage population by day 7 in the spleen and contemporaneously induced elevated plasma levels of anti-inflammatory IL-10. In contrast, the PGS graft without TE prompted prolonged inflammation, as evidenced by splenomegaly and greater splenic granulocyte and monocyte fractions at day 14. Locally, the inclusion of TE in the graft led to increased anti-inflammatory M2 macrophages and CD4+T cells at the wound site, and a rise in Foxp3+ regulatory T cells in the wound bed by day 7. We conclude that the TE-incorporated skin graft delivers a pro-healing environment by modulating systemic and local tissue responses. STATEMENT OF SIGNIFICANCE: Tropoelastin (TE) has shown significant benefits in promoting the repair and regeneration of damaged human tissues. In this study, we show that TE promotes an anti-inflammatory environment that facilitates cutaneous wound healing. In a mouse model, we find that inserting a TE-containing material into a full-thickness wound results in defined, pro-healing local and systemic tissue responses. These findings advance our understanding of TE's restorative value in tissue engineering and regenerative medicine, and pave the way for clinical applications.
Collapse
Affiliation(s)
- Ziyu Wang
- School of Life and Environmental Sciences, the University of Sydney, NSW 2006, Australia; Charles Perkins Centre, the University of Sydney, NSW 2006, Australia
| | - Huaikai Shi
- Burns Research and Reconstructive Surgery, Anzac Research Institute, NSW 2139, Australia; Asbestos and Dust Disease Research Institute, Concord Hospital, Sydney, NSW 2139, Australia
| | - Pablo A Silveira
- Dendritic Cell Group, ANZAC Research Institute, Concord Hospital, Sydney, NSW 2139, Australia
| | - Suzanne M Mithieux
- School of Life and Environmental Sciences, the University of Sydney, NSW 2006, Australia; Charles Perkins Centre, the University of Sydney, NSW 2006, Australia
| | - Wai Cheng Wong
- Charles Perkins Centre, the University of Sydney, NSW 2006, Australia
| | - Linyang Liu
- School of Life and Environmental Sciences, the University of Sydney, NSW 2006, Australia; Charles Perkins Centre, the University of Sydney, NSW 2006, Australia
| | - Nguyen T H Pham
- Key Centre for Polymers and Colloids, School of Chemistry, the University of Sydney, NSW 2006, Australia
| | - Brian S Hawkett
- Key Centre for Polymers and Colloids, School of Chemistry, the University of Sydney, NSW 2006, Australia
| | - Yiwei Wang
- Burns Research and Reconstructive Surgery, Anzac Research Institute, NSW 2139, Australia; Jiangsu Provincial Engineering Research Centre of TCM External Medication Development and Application, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China.
| | - Anthony S Weiss
- School of Life and Environmental Sciences, the University of Sydney, NSW 2006, Australia; Charles Perkins Centre, the University of Sydney, NSW 2006, Australia; The University of Sydney Nano Institute, the University of Sydney, NSW 2006, Australia.
| |
Collapse
|
7
|
Peh HY, Nshimiyimana R, Brüggemann TR, Duvall MG, Nijmeh J, Serhan CN, Levy BD. 15-epi-lipoxin A 5 promotes neutrophil exit from exudates for clearance by splenic macrophages. FASEB J 2024; 38:e23807. [PMID: 38989570 PMCID: PMC11344644 DOI: 10.1096/fj.202400610r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 06/10/2024] [Accepted: 06/26/2024] [Indexed: 07/12/2024]
Abstract
Specialized proresolving mediators (SPMs) promote local macrophage efferocytosis but excess leukocytes early in inflammation require additional leukocyte clearance mechanism for resolution. Here, neutrophil clearance mechanisms from localized acute inflammation were investigated in mouse dorsal air pouches. 15-HEPE (15-hydroxy-5Z,8Z,11Z,13E,17Z-eicosapentaenoic acid) levels were increased in the exudates. Activated human neutrophils converted 15-HEPE to lipoxin A5 (5S,6R,15S-trihydroxy-7E,9E,11Z,13E,17Z-eicosapentaenoic acid), 15-epi-lipoxin A5 (5S,6R,15R-trihydroxy-7E,9E,11Z,13E,17Z-eicosapentaenoic acid), and resolvin E4 (RvE4; 5S,15S-dihydroxy-6E,8Z,11Z,13E,17Z-eicosapentaenoic acid). Exogenous 15-epi-lipoxin A5, 15-epi-lipoxin A4 and a structural lipoxin mimetic significantly decreased exudate neutrophils and increased local tissue macrophage efferocytosis, with comparison to naproxen. 15-epi-lipoxin A5 also cleared exudate neutrophils faster than the apparent local capacity for stimulated macrophage efferocytosis, so the fate of exudate neutrophils was tracked with CD45.1 variant neutrophils. 15-epi-lipoxin A5 augmented the exit of adoptively transferred neutrophils from the pouch exudate to the spleen, and significantly increased splenic SIRPa+ and MARCO+ macrophage efferocytosis. Together, these findings demonstrate new systemic resolution mechanisms for 15-epi-lipoxin A5 and RvE4 in localized tissue inflammation, which distally engage the spleen to activate macrophage efferocytosis for the clearance of tissue exudate neutrophils.
Collapse
Affiliation(s)
- Hong Yong Peh
- Pulmonary and Critical Care Medicine Division, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA 02115, USA
| | - Robert Nshimiyimana
- Center for Experimental Therapeutics and Reperfusion Injury, Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA 02115, USA
| | - Thayse R. Brüggemann
- Pulmonary and Critical Care Medicine Division, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA 02115, USA
| | - Melody G. Duvall
- Pulmonary and Critical Care Medicine Division, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA 02115, USA
| | - Julie Nijmeh
- Pulmonary and Critical Care Medicine Division, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA 02115, USA
| | - Charles N. Serhan
- Center for Experimental Therapeutics and Reperfusion Injury, Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA 02115, USA
| | - Bruce D. Levy
- Pulmonary and Critical Care Medicine Division, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA 02115, USA
| |
Collapse
|
8
|
Holt M, Lin J, Cicka M, Wong A, Epelman S, Lavine KJ. Dissecting and Visualizing the Functional Diversity of Cardiac Macrophages. Circ Res 2024; 134:1791-1807. [PMID: 38843293 DOI: 10.1161/circresaha.124.323817] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Accepted: 05/09/2024] [Indexed: 06/11/2024]
Abstract
Cardiac macrophages represent a functionally diverse population of cells involved in cardiac homeostasis, repair, and remodeling. With recent advancements in single-cell technologies, it is possible to elucidate specific macrophage subsets based on transcriptional signatures and cell surface protein expression to gain a deep understanding of macrophage diversity in the heart. The use of fate-mapping technologies and parabiosis studies have provided insight into the ontogeny and dynamics of macrophages identifying subsets derived from embryonic and adult definitive hematopoietic progenitors that include tissue-resident and bone marrow monocyte-derived macrophages, respectively. Within the heart, these subsets have distinct tissue niches and functional roles in the setting of homeostasis and disease, with cardiac resident macrophages representing a protective cell population while bone marrow monocyte-derived cardiac macrophages have a context-dependent effect, triggering both proinflammatory tissue injury, but also promoting reparative functions. With the increased understanding of the clinical relevance of cardiac macrophage subsets, there has been an increasing need to detect and measure cardiac macrophage compositions in living animals and patients. New molecular tracers compatible with positron emission tomography/computerized tomography and positron emission tomography/ magnetic resonance imaging have enabled investigators to noninvasively and serially visualize cardiac macrophage subsets within the heart to define associations with disease and measure treatment responses. Today, advancements within this thriving field are poised to fuel an era of clinical translation.
Collapse
Affiliation(s)
- Megan Holt
- Division of Cardiology, Department of Medicine, Center for Cardiovascular Research, Washington University School of Medicine (M.H., M.C., K.J.L.)
| | - Julia Lin
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada (J.L., A.W., S.E.)
- Department of Immunology, University of Toronto, ON, Canada (J.L., A.W., S.E.)
| | - Markus Cicka
- Division of Cardiology, Department of Medicine, Center for Cardiovascular Research, Washington University School of Medicine (M.H., M.C., K.J.L.)
| | - Anthony Wong
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada (J.L., A.W., S.E.)
- Department of Immunology, University of Toronto, ON, Canada (J.L., A.W., S.E.)
| | - Slava Epelman
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada (J.L., A.W., S.E.)
- Ted Rogers Centre for Heart Research, Translational Biology and Engineering Program, Toronto, ON, Canada (S.E.)
- Department of Immunology, University of Toronto, ON, Canada (J.L., A.W., S.E.)
- Peter Munk Cardiac Centre, University Health Network, Toronto, ON, Canada (S.E.)
| | - Kory J Lavine
- Division of Cardiology, Department of Medicine, Center for Cardiovascular Research, Washington University School of Medicine (M.H., M.C., K.J.L.)
| |
Collapse
|
9
|
Takano KA, Wong AAL, Brown R, Situ K, Chua BA, Abu AE, Pham TT, Reyes GC, Ramachandran S, Kamata M, Li MMH, Wu TT, Rao DS, Arumugaswami V, Dorshkind K, Cole S, Morizono K. Envelope protein-specific B cell receptors direct lentiviral vector tropism in vivo. Mol Ther 2024; 32:1311-1327. [PMID: 38449314 PMCID: PMC11081870 DOI: 10.1016/j.ymthe.2024.03.002] [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: 10/19/2023] [Revised: 01/11/2024] [Accepted: 03/04/2024] [Indexed: 03/08/2024] Open
Abstract
While studying transgene expression after systemic administration of lentiviral vectors, we found that splenic B cells are robustly transduced, regardless of the types of pseudotyped envelope proteins. However, the administration of two different pseudotypes resulted in transduction of two distinct B cell populations, suggesting that each pseudotype uses unique and specific receptors for its attachment and entry into splenic B cells. Single-cell RNA sequencing analysis of the transduced cells demonstrated that different pseudotypes transduce distinct B cell subpopulations characterized by specific B cell receptor (BCR) genotypes. Functional analysis of the BCRs of the transduced cells demonstrated that BCRs specific to the pseudotyping envelope proteins mediate viral entry, enabling the vectors to selectively transduce the B cell populations that are capable of producing antibodies specific to their envelope proteins. Lentiviral vector entry via the BCR activated the transduced B cells and induced proliferation and differentiation into mature effectors, such as memory B and plasma cells. BCR-mediated viral entry into clonally specific B cell subpopulations raises new concepts for understanding the biodistribution of transgene expression after systemic administration of lentiviral vectors and offers new opportunities for BCR-targeted gene delivery by pseudotyped lentiviral vectors.
Collapse
Affiliation(s)
- Kari-Ann Takano
- Division of Hematology and Oncology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; UCLA AIDS Institute, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Anita A L Wong
- Division of Hematology and Oncology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; UCLA AIDS Institute, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Rebecca Brown
- Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Kathy Situ
- Division of Hematology and Oncology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; UCLA AIDS Institute, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Bernadette Anne Chua
- Division of Hematology and Oncology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; UCLA AIDS Institute, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Angel Elma Abu
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Truc T Pham
- Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Glania Carel Reyes
- Division of Hematology and Oncology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; UCLA AIDS Institute, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Sangeetha Ramachandran
- Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Masakazu Kamata
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL 35233, USA
| | - Melody M H Li
- UCLA AIDS Institute, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Ting-Ting Wu
- UCLA AIDS Institute, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA 90095, USA; Jonsson Comprehensive Cancer Center (JCCC), University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Molecular and Medical Pharmacology, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Dinesh S Rao
- Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA 90095, USA; Jonsson Comprehensive Cancer Center (JCCC), University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Vaithilingaraja Arumugaswami
- Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Molecular and Medical Pharmacology, University of California, Los Angeles, Los Angeles, CA 90095, USA; California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Kenneth Dorshkind
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Steve Cole
- Departments of Psychiatry & Biobehavioral Sciences and Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Kouki Morizono
- Division of Hematology and Oncology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; UCLA AIDS Institute, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA.
| |
Collapse
|
10
|
Yang Y, Yang R, Deng F, Yang L, Yang G, Liu Y, Tian Q, Wang Z, Li A, Shang L, Cheng G, Zhang L. Immunoactivation by Cutaneous Blue Light Irradiation Inhibits Remote Tumor Growth and Metastasis. ACS Pharmacol Transl Sci 2024; 7:1055-1068. [PMID: 38633599 PMCID: PMC11019738 DOI: 10.1021/acsptsci.3c00355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 03/01/2024] [Accepted: 03/06/2024] [Indexed: 04/19/2024]
Abstract
An improved innate immunity will respond quickly to pathogens and initiate efficient adaptive immune responses. However, up to now, there have been limited clinical ways for effective and rapid consolidation of innate immunity. Here, we report that cutaneous irradiation with blue light of 450 nm rapidly stimulates the innate immunity through cell endogenous reactive oxygen species (ROS) regulation in a noninvasive way. The iron porphyrin-containing proteins, mitochondrial cytochrome c (Cyt-c), and cytochrome p450 (CYP450) can be mobilized by blue light, which boosts electron transport and ROS production in epidermal and dermal tissues. As a messenger of innate immune activation, the increased level of ROS activates the NF-κB signaling pathway and promotes the secretion of immunomodulatory cytokines in skin. Initiated from skin, a regulatory network composed of cytokines and immune cells is established through the circulation system for innate immune activation. The innate immunity activated by whole-body blue light irradiation inhibits tumor growth and metastasis by increasing the infiltration of antitumor neutrophils and tumor-associated macrophages. Our results elucidate the remote immune modulation mechanism of blue light and provide a clinically applicable way for innate immunity activation.
Collapse
Affiliation(s)
- Yingchun Yang
- Key Laboratory for Space Bioscience & Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
| | - Rong Yang
- Key Laboratory for Space Bioscience & Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
| | - Fangqing Deng
- Key Laboratory for Space Bioscience & Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
| | - Luqiu Yang
- Key Laboratory for Space Bioscience & Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
| | - Guanghao Yang
- Key Laboratory for Space Bioscience & Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
| | - Yanyan Liu
- Key Laboratory for Space Bioscience & Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
| | - Qing Tian
- Key Laboratory for Space Bioscience & Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
| | - Zixi Wang
- Key Laboratory for Space Bioscience & Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
| | - Aipeng Li
- School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Li Shang
- School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China
| | - Genyang Cheng
- Department of Nephrology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Lianbing Zhang
- Key Laboratory for Space Bioscience & Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, China
| |
Collapse
|
11
|
Ferreira EA, Clements JE, Veenhuis RT. HIV-1 Myeloid Reservoirs - Contributors to Viral Persistence and Pathogenesis. Curr HIV/AIDS Rep 2024; 21:62-74. [PMID: 38411842 DOI: 10.1007/s11904-024-00692-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/12/2024] [Indexed: 02/28/2024]
Abstract
PURPOSE OF REVIEW HIV reservoirs are the main barrier to cure. CD4+ T cells have been extensively studied as the primary HIV-1 reservoir. However, there is substantial evidence that HIV-1-infected myeloid cells (monocytes/macrophages) also contribute to viral persistence and pathogenesis. RECENT FINDINGS Recent studies in animal models and people with HIV-1 demonstrate that myeloid cells are cellular reservoirs of HIV-1. HIV-1 genomes and viral RNA have been reported in circulating monocytes and tissue-resident macrophages from the brain, urethra, gut, liver, and spleen. Importantly, viral outgrowth assays have quantified persistent infectious virus from monocyte-derived macrophages and tissue-resident macrophages. The myeloid cell compartment represents an important target of HIV-1 infection. While myeloid reservoirs may be more difficult to measure than CD4+ T cell reservoirs, they are long-lived, contribute to viral persistence, and, unless specifically targeted, will prevent an HIV-1 cure.
Collapse
Affiliation(s)
- Edna A Ferreira
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, 21205, USA
| | - Janice E Clements
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, 21205, USA
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, 21205, USA
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland, 21205, USA
| | - Rebecca T Veenhuis
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, 21205, USA.
- Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, 21205, USA.
| |
Collapse
|
12
|
Nechanitzky R, Ramachandran P, Nechanitzky D, Li WY, Wakeham AC, Haight J, Saunders ME, Epelman S, Mak TW. CaSSiDI: novel single-cell "Cluster Similarity Scoring and Distinction Index" reveals critical functions for PirB and context-dependent Cebpb repression. Cell Death Differ 2024; 31:265-279. [PMID: 38383888 PMCID: PMC10923835 DOI: 10.1038/s41418-024-01268-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 01/15/2024] [Accepted: 02/07/2024] [Indexed: 02/23/2024] Open
Abstract
PirB is an inhibitory cell surface receptor particularly prominent on myeloid cells. PirB curtails the phenotypes of activated macrophages during inflammation or tumorigenesis, but its functions in macrophage homeostasis are obscure. To elucidate PirB-related functions in macrophages at steady-state, we generated and compared single-cell RNA-sequencing (scRNAseq) datasets obtained from myeloid cell subsets of wild type (WT) and PirB-deficient knockout (PirB KO) mice. To facilitate this analysis, we developed a novel approach to clustering parameter optimization called "Cluster Similarity Scoring and Distinction Index" (CaSSiDI). We demonstrate that CaSSiDI is an adaptable computational framework that facilitates tandem analysis of two scRNAseq datasets by optimizing clustering parameters. We further show that CaSSiDI offers more advantages than a standard Seurat analysis because it allows direct comparison of two or more independently clustered datasets, thereby alleviating the need for batch-correction while identifying the most similar and different clusters. Using CaSSiDI, we found that PirB is a novel regulator of Cebpb expression that controls the generation of Ly6Clo patrolling monocytes and the expansion properties of peritoneal macrophages. PirB's effect on Cebpb is tissue-specific since it was not observed in splenic red pulp macrophages (RPMs). However, CaSSiDI revealed a segregation of the WT RPM population into a CD68loIrf8+ "neuronal-primed" subset and an CD68hiFtl1+ "iron-loaded" subset. Our results establish the utility of CaSSiDI for single-cell assay analyses and the determination of optimal clustering parameters. Our application of CaSSiDI in this study has revealed previously unknown roles for PirB in myeloid cell populations. In particular, we have discovered homeostatic functions for PirB that are related to Cebpb expression in distinct macrophage subsets.
Collapse
Affiliation(s)
- Robert Nechanitzky
- Princess Margaret Cancer Centre, Ontario Cancer Institute, University Health Network, Toronto, ON, Canada.
- Providence Therapeutics Holdings Inc., Calgary, AB, Canada.
| | - Parameswaran Ramachandran
- Princess Margaret Cancer Centre, Ontario Cancer Institute, University Health Network, Toronto, ON, Canada
| | - Duygu Nechanitzky
- Princess Margaret Cancer Centre, Ontario Cancer Institute, University Health Network, Toronto, ON, Canada
| | - Wanda Y Li
- Centre for Oncology and Immunology, Hong Kong Science Park, Hong Kong SAR, China
| | - Andrew C Wakeham
- Princess Margaret Cancer Centre, Ontario Cancer Institute, University Health Network, Toronto, ON, Canada
| | - Jillian Haight
- Princess Margaret Cancer Centre, Ontario Cancer Institute, University Health Network, Toronto, ON, Canada
| | - Mary E Saunders
- Princess Margaret Cancer Centre, Ontario Cancer Institute, University Health Network, Toronto, ON, Canada
| | - Slava Epelman
- Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada
- Ted Rogers Centre for Heart Research, Translational Biology and Engineering Program, Toronto, ON, Canada
- Peter Munk Cardiac Centre, UHN, Toronto, ON, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
- Departments of Immunology and Medical Biophysics, University of Toronto, Toronto, ON, Canada
| | - Tak W Mak
- Princess Margaret Cancer Centre, Ontario Cancer Institute, University Health Network, Toronto, ON, Canada.
- Centre for Oncology and Immunology, Hong Kong Science Park, Hong Kong SAR, China.
- Department of Pathology Department of Pathology, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China.
| |
Collapse
|
13
|
Kong WT, Bied M, Ginhoux F. Spectral Flow Cytometry Analysis of Resident Tissue Macrophages. Methods Mol Biol 2024; 2713:269-280. [PMID: 37639129 DOI: 10.1007/978-1-0716-3437-0_18] [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] [Indexed: 08/29/2023]
Abstract
Spectral flow cytometry improves flow cytometry panels by resolving the full emission spectra of individual fluorophores, allowing greater flexibility to incorporate more fluorochromes when designing multicolor panels. Additionally, the spectral approach captures the autofluorescence of a sample or cell population (e.g., macrophages, which are highly autofluorescent) that can be considered during unmixing for improved downstream analyses. As the increased complexity of macrophage heterogeneity unravels in the scientific community, it is crucial to obtain high-dimensional data at the single-cell level to resolve these populations.
Collapse
Affiliation(s)
- Wan Ting Kong
- Gustave Roussy Cancer Campus, Villejuif, France
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1015, Equipe Labellisée-Ligue Nationale contre le Cancer, Villejuif, France
- Université Paris-Saclay, Ile-de-France, France
| | - Mathilde Bied
- Gustave Roussy Cancer Campus, Villejuif, France
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1015, Equipe Labellisée-Ligue Nationale contre le Cancer, Villejuif, France
| | - Florent Ginhoux
- Gustave Roussy Cancer Campus, Villejuif, France.
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1015, Equipe Labellisée-Ligue Nationale contre le Cancer, Villejuif, France.
- Université Paris-Saclay, Ile-de-France, France.
- Singapore Immunology Network (SIgN), A*STAR, Singapore, Singapore.
- Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
- Translational Immunology Institute, SingHealth Duke-NUS Academic Medical Centre, Singapore, Singapore.
| |
Collapse
|
14
|
Nematullah M, Fatma M, Rashid F, Ayasolla K, Ahmed ME, Mir S, Zahoor I, Rattan R, Giri S. Immuno-Responsive Gene-1: A mitochondrial gene regulates pathogenic Th17 in CNS autoimmunity mouse model. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.12.24.573264. [PMID: 38234838 PMCID: PMC10793427 DOI: 10.1101/2023.12.24.573264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
Pathogenic Th17 cells are crucial to CNS autoimmune diseases like multiple sclerosis (MS), though their control by endogenous mechanisms is unknown. RNAseq analysis of brain glial cells identified immuno-responsive gene 1 (Irg1), a mitochondrial-related enzyme-coding gene, as one of the highly upregulated gene under inflammatory conditions which were further validated in the spinal cord of animals with experimental autoimmune encephalomyelitis (EAE), an animal model of MS. Moreover, Irg1 mRNA and protein levels in myeloid, CD4, and B cells were higher in the EAE group, raising questions about its function in CNS autoimmunity. We observed that Irg1 knockout (KO) mice exhibited severe EAE disease and greater mononuclear cell infiltration, including triple-positive CD4 cells expressing IL17a, GM-CSF, and IFNγ. Lack of Irg1 in macrophages led to higher levels of Class II expression and polarized myelin primed CD4 cells into pathogenic Th17 cells through the NLRP3/IL1β axis. Our findings show that Irg1 in macrophages plays an important role in the formation of pathogenic Th17 cells, emphasizing its potential as a therapy for autoimmune diseases, including MS.
Collapse
Affiliation(s)
- Mohammad Nematullah
- Department of Neurology, Department of Women’s Health Services, Henry Ford Hospital, E&R Building, Room 4051, Detroit, USA
| | - Mena Fatma
- Department of Neurology, Department of Women’s Health Services, Henry Ford Hospital, E&R Building, Room 4051, Detroit, USA
| | - Faraz Rashid
- Department of Neurology, Department of Women’s Health Services, Henry Ford Hospital, E&R Building, Room 4051, Detroit, USA
| | - Kameshwar Ayasolla
- Department of Neurology, Department of Women’s Health Services, Henry Ford Hospital, E&R Building, Room 4051, Detroit, USA
| | - Mohammad Ejaz Ahmed
- Department of Neurology, Department of Women’s Health Services, Henry Ford Hospital, E&R Building, Room 4051, Detroit, USA
| | - Sajad Mir
- Department of Neurology, Department of Women’s Health Services, Henry Ford Hospital, E&R Building, Room 4051, Detroit, USA
| | - Insha Zahoor
- Department of Neurology, Department of Women’s Health Services, Henry Ford Hospital, E&R Building, Room 4051, Detroit, USA
| | - Ramandeep Rattan
- Division of Gynaecology Oncology, Department of Women’s Health Services, Henry Ford Hospital, E&R Building, Room 4051, Detroit, USA
| | - Shailendra Giri
- Department of Neurology, Department of Women’s Health Services, Henry Ford Hospital, E&R Building, Room 4051, Detroit, USA
| |
Collapse
|
15
|
Bekhbat M, Drake J, Reed EC, Lauten TH, Natour T, Vladimirov VI, Case AJ. Repeated social defeat stress leads to immunometabolic shifts in innate immune cells of the spleen. Brain Behav Immun Health 2023; 34:100690. [PMID: 37791319 PMCID: PMC10543777 DOI: 10.1016/j.bbih.2023.100690] [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: 09/21/2023] [Accepted: 09/23/2023] [Indexed: 10/05/2023] Open
Abstract
Psychosocial stress has been shown to prime peripheral innate immune cells, which take on hyper-inflammatory phenotypes and are implicated in depressive-like behavior in mouse models. However, the impact of stress on cellular metabolic states that are thought to fuel inflammatory phenotypes in immune cells are unknown. Using single cell RNA-sequencing, we investigated mRNA enrichment of immunometabolic pathways in innate immune cells of the spleen in mice subjected to repeated social defeat stress (RSDS) or no stress (NS). RSDS mice displayed a significant increase in the number of splenic macrophages and granulocytes (p < 0.05) compared to NS littermates. RSDS-upregulated genes in macrophages, monocytes, and granulocytes significantly enriched immunometabolic pathways thought to play a role in myeloid-driven inflammation (glycolysis, HIF-1 signaling, MTORC1 signaling) as well as pathways related to oxidative phosphorylation (OXPHOS) and oxidative stress (p < 0.05 and FDR<0.1). These results suggest that the metabolic enhancement reflected by upregulation of glycolytic and OXPHOS pathways may be important for cellular proliferation of splenic macrophages and granulocytes following repeated stress exposure. A better understanding of these intracellular metabolic mechanisms may ultimately help develop novel strategies to reverse the impact of stress and associated peripheral immune changes on the brain and behavior.
Collapse
Affiliation(s)
- Mandakh Bekhbat
- Department of Psychiatry and Behavioral Sciences, Emory University, Atlanta, GA, 30322, USA
| | - John Drake
- Department of Psychiatry and Behavioral Sciences, Texas A&M University, Bryan, TX, 77807, USA
| | - Emily C. Reed
- Department of Psychiatry and Behavioral Sciences, Texas A&M University, Bryan, TX, 77807, USA
- Department of Medical Physiology, Texas A&M University, Bryan, TX, 77807, USA
| | - Tatlock H. Lauten
- Department of Psychiatry and Behavioral Sciences, Texas A&M University, Bryan, TX, 77807, USA
- Department of Medical Physiology, Texas A&M University, Bryan, TX, 77807, USA
| | - Tamara Natour
- Department of Psychiatry and Behavioral Sciences, Texas A&M University, Bryan, TX, 77807, USA
- Department of Medical Physiology, Texas A&M University, Bryan, TX, 77807, USA
| | - Vladimir I. Vladimirov
- Department of Psychiatry and Behavioral Sciences, Texas A&M University, Bryan, TX, 77807, USA
- Department of Psychiatry, University of Arizona, Phoenix, AZ, 85004, USA
- Lieber Institute for Brain Development, Johns Hopkins University, Baltimore, MD, 21205, USA
| | - Adam J. Case
- Department of Psychiatry and Behavioral Sciences, Texas A&M University, Bryan, TX, 77807, USA
- Department of Medical Physiology, Texas A&M University, Bryan, TX, 77807, USA
| |
Collapse
|
16
|
Egoraeva A, Tyrtyshnaia A, Ponomarenko A, Ivashkevich D, Sultanov R, Manzhulo I. Anti-inflammatory Effect of Polyunsaturated Fatty Acid N-Acylethanolamines Mediated by Macrophage Activity In Vitro and In Vivo. Inflammation 2023; 46:2306-2319. [PMID: 37490220 DOI: 10.1007/s10753-023-01879-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 07/03/2023] [Accepted: 07/16/2023] [Indexed: 07/26/2023]
Abstract
In recent years, there has been increasing interest in studying the anti-inflammatory activity of polyunsaturated fatty acid ethanolamides (N-acylethanolamines, NAE), which are highly active lipid mediators. The results of this study demonstrate that a dietary supplement (DS) of fatty acid-derived NAEs reduces LPS-induced inflammation. The processes of cell proliferation, as well as the dynamics of Iba-1-, CD68-, and CD163-positive macrophage activity within the thymus and spleen were studied. The production of pro-inflammatory cytokines (TNF, IL1β, IL6, and INFγ), ROS, NO, and nitrites was evaluated in the blood serum, thymus, and LPS-stimulated RAW264.7 mouse macrophages. In vitro and in vivo experiments have shown that DS (1) prevents LPS-induced changes in the morphological structure of the thymus and spleen; (2) levels out changes in cell proliferation; (3) inhibits the activity of Iba-1 and CD68-positive cells; (4) reduces the production of pro-inflammatory cytokines (TNF, IL1β, IL6, and INFγ), ROS, and CD68; and (5) enhances the activity of CD-163-positive cells. In general, the results of this study demonstrate the complex effect of DS on inflammatory processes in the central and peripheral immune systems.
Collapse
Affiliation(s)
- Anastasia Egoraeva
- A.V. Zhirmunsky National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, 690041, Vladivostok, Russia
| | - Anna Tyrtyshnaia
- A.V. Zhirmunsky National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, 690041, Vladivostok, Russia
| | - Arina Ponomarenko
- A.V. Zhirmunsky National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, 690041, Vladivostok, Russia
| | - Darya Ivashkevich
- A.V. Zhirmunsky National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, 690041, Vladivostok, Russia
| | - Ruslan Sultanov
- A.V. Zhirmunsky National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, 690041, Vladivostok, Russia
| | - Igor Manzhulo
- A.V. Zhirmunsky National Scientific Center of Marine Biology, Far Eastern Branch, Russian Academy of Sciences, 690041, Vladivostok, Russia.
| |
Collapse
|
17
|
Kare AJ, Nichols L, Zermeno R, Raie MN, Tumbale SK, Ferrara KW. OMIP-095: 40-Color spectral flow cytometry delineates all major leukocyte populations in murine lymphoid tissues. Cytometry A 2023; 103:839-850. [PMID: 37768325 PMCID: PMC10843696 DOI: 10.1002/cyto.a.24788] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 07/26/2023] [Accepted: 08/18/2023] [Indexed: 09/29/2023]
Abstract
High-dimensional immunoprofiling is essential for studying host response to immunotherapy, infection, and disease in murine model systems. However, the difficulty of multiparameter panel design combined with a lack of existing murine tools has prevented the comprehensive study of all major leukocyte phenotypes in a single assay. Herein, we present a 40-color flow cytometry panel for deep immunophenotyping of murine lymphoid tissues, including the spleen, blood, Peyer's patches, inguinal lymph nodes, bone marrow, and thymus. This panel uses a robust set of surface markers capable of differentiating leukocyte subsets without the use of intracellular staining, thus allowing for the use of cells in downstream functional experiments or multiomic analyses. Our panel classifies T cells, B cells, natural killer cells, innate lymphoid cells, monocytes, macrophages, dendritic cells, basophils, neutrophils, eosinophils, progenitors, and their functional subsets by using a series of co-stimulatory, checkpoint, activation, migration, and maturation markers. This tool has a multitude of systems immunology applications ranging from serial monitoring of circulating blood signatures to complex endpoint analysis, especially in pre-clinical settings where treatments can modulate leukocyte abundance and/or function. Ultimately, this 40-color panel resolves a diverse array of immune cells on the axes of time, tissue, and treatment, filling the niche for a modern tool dedicated to murine immunophenotyping.
Collapse
Affiliation(s)
- Aris J. Kare
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA
- Department of Radiology, Stanford University, Stanford, CA 94305, USA
| | - Lisa Nichols
- Stanford Shared FACS Facility, Stanford University, Stanford, CA 94305, USA
| | - Ricardo Zermeno
- Stanford Shared FACS Facility, Stanford University, Stanford, CA 94305, USA
| | - Marina N. Raie
- Department of Radiology, Stanford University, Stanford, CA 94305, USA
| | | | | |
Collapse
|
18
|
Li J, Karakas D, Xue F, Chen Y, Zhu G, Yucel YH, MacParland SA, Zhang H, Semple JW, Freedman J, Shi Q, Ni H. Desialylated Platelet Clearance in the Liver is a Novel Mechanism of Systemic Immunosuppression. RESEARCH (WASHINGTON, D.C.) 2023; 6:0236. [PMID: 37808178 PMCID: PMC10551749 DOI: 10.34133/research.0236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 09/02/2023] [Indexed: 10/10/2023]
Abstract
Platelets are small, versatile blood cells that are critical for hemostasis/thrombosis. Local platelet accumulation is a known contributor to proinflammation in various disease states. However, the anti-inflammatory/immunosuppressive potential of platelets has been poorly explored. Here, we uncovered, unexpectedly, desialylated platelets (dPLTs) down-regulated immune responses against both platelet-associated and -independent antigen challenges. Utilizing multispectral photoacoustic tomography, we tracked dPLT trafficking to gut vasculature and an exclusive Kupffer cell-mediated dPLT clearance in the liver, a process that we identified to be synergistically dependent on platelet glycoprotein Ibα and hepatic Ashwell-Morell receptor. Mechanistically, Kupffer cell clearance of dPLT potentiated a systemic immunosuppressive state with increased anti-inflammatory cytokines and circulating CD4+ regulatory T cells, abolishable by Kupffer cell depletion. Last, in a clinically relevant model of hemophilia A, presensitization with dPLT attenuated anti-factor VIII antibody production after factor VIII ( infusion. As platelet desialylation commonly occurs in daily-aged and activated platelets, these findings open new avenues toward understanding immune homeostasis and potentiate the therapeutic potential of dPLT and engineered dPLT transfusions in controlling autoimmune and alloimmune diseases.
Collapse
Affiliation(s)
- June Li
- Department of Laboratory Medicine and Pathobiology,
University of Toronto, Toronto, ON, Canada
- Toronto Platelet Immunobiology Group, Toronto, ON, Canada
- Keenan Research Centre for Biomedical Science of St. Michael’s Hospital, Toronto, ON, Canada
- Canadian Blood Services Centre for Innovation, Toronto, ON, Canada
| | - Danielle Karakas
- Department of Laboratory Medicine and Pathobiology,
University of Toronto, Toronto, ON, Canada
- Toronto Platelet Immunobiology Group, Toronto, ON, Canada
- Keenan Research Centre for Biomedical Science of St. Michael’s Hospital, Toronto, ON, Canada
| | - Feng Xue
- Departments of Pediatrics,
Medical College of Wisconsin, Milwaukee, WI, USA
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, USA
| | - Yingyu Chen
- Departments of Pediatrics,
Medical College of Wisconsin, Milwaukee, WI, USA
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, USA
| | - Guangheng Zhu
- Toronto Platelet Immunobiology Group, Toronto, ON, Canada
- Keenan Research Centre for Biomedical Science of St. Michael’s Hospital, Toronto, ON, Canada
| | - Yeni H. Yucel
- Keenan Research Centre for Biomedical Science of St. Michael’s Hospital, Toronto, ON, Canada
- Departments of Ophthalmology and Vision Sciences Medicine,
University of Toronto, Toronto, ON, Canada
- Faculty of Engineering and Architectural Science,
Ryerson University, Toronto, ON, Canada
| | - Sonya A. MacParland
- Department of Laboratory Medicine and Pathobiology,
University of Toronto, Toronto, ON, Canada
- Multi-Organ Transplant Program,
Toronto General Hospital Research Institute, Toronto, ON, Canada
- Department of Immunology,
University of Toronto, Toronto, ON, Canada
| | - Haibo Zhang
- Keenan Research Centre for Biomedical Science of St. Michael’s Hospital, Toronto, ON, Canada
- Critical Care Medicine, Department of Anesthesiology and Pain,
University of Toronto, Toronto, ON, Canada
- Department of Physiology,
University of Toronto, Toronto, ON, Canada
| | - John W. Semple
- Department of Laboratory Medicine and Pathobiology,
University of Toronto, Toronto, ON, Canada
- Department of Pharmacology,
University of Toronto, Toronto, ON, Canada
- Division of Hematology and Transfusion Medicine,
Lund University, Lund, Sweden
- Clinical Immunology and Transfusion Medicine,
Office of Medical Services, Region Skåne, Lund, Sweden
| | - John Freedman
- Department of Laboratory Medicine and Pathobiology,
University of Toronto, Toronto, ON, Canada
- Toronto Platelet Immunobiology Group, Toronto, ON, Canada
- Keenan Research Centre for Biomedical Science of St. Michael’s Hospital, Toronto, ON, Canada
- Department of Medicine,
University of Toronto, Toronto, ON, Canada
| | - Qizhen Shi
- Departments of Pediatrics,
Medical College of Wisconsin, Milwaukee, WI, USA
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, USA
- Children’s Research Institute, Children’s Wisconsin, Wauwatosa, WI, USA
- Midwest Athletes Against Childhood Cancer Fund Research Center, Milwaukee, WI, USA
| | - Heyu Ni
- Department of Laboratory Medicine and Pathobiology,
University of Toronto, Toronto, ON, Canada
- Toronto Platelet Immunobiology Group, Toronto, ON, Canada
- Keenan Research Centre for Biomedical Science of St. Michael’s Hospital, Toronto, ON, Canada
- Canadian Blood Services Centre for Innovation, Toronto, ON, Canada
- Department of Physiology,
University of Toronto, Toronto, ON, Canada
- Department of Medicine,
University of Toronto, Toronto, ON, Canada
| |
Collapse
|
19
|
Strizova Z, Benesova I, Bartolini R, Novysedlak R, Cecrdlova E, Foley L, Striz I. M1/M2 macrophages and their overlaps - myth or reality? Clin Sci (Lond) 2023; 137:1067-1093. [PMID: 37530555 PMCID: PMC10407193 DOI: 10.1042/cs20220531] [Citation(s) in RCA: 62] [Impact Index Per Article: 62.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 07/03/2023] [Accepted: 07/11/2023] [Indexed: 08/03/2023]
Abstract
Macrophages represent heterogeneous cell population with important roles in defence mechanisms and in homoeostasis. Tissue macrophages from diverse anatomical locations adopt distinct activation states. M1 and M2 macrophages are two polarized forms of mononuclear phagocyte in vitro differentiation with distinct phenotypic patterns and functional properties, but in vivo, there is a wide range of different macrophage phenotypes in between depending on the microenvironment and natural signals they receive. In human infections, pathogens use different strategies to combat macrophages and these strategies include shaping the macrophage polarization towards one or another phenotype. Macrophages infiltrating the tumours can affect the patient's prognosis. M2 macrophages have been shown to promote tumour growth, while M1 macrophages provide both tumour-promoting and anti-tumour properties. In autoimmune diseases, both prolonged M1 activation, as well as altered M2 function can contribute to their onset and activity. In human atherosclerotic lesions, macrophages expressing both M1 and M2 profiles have been detected as one of the potential factors affecting occurrence of cardiovascular diseases. In allergic inflammation, T2 cytokines drive macrophage polarization towards M2 profiles, which promote airway inflammation and remodelling. M1 macrophages in transplantations seem to contribute to acute rejection, while M2 macrophages promote the fibrosis of the graft. The view of pro-inflammatory M1 macrophages and M2 macrophages suppressing inflammation seems to be an oversimplification because these cells exploit very high level of plasticity and represent a large scale of different immunophenotypes with overlapping properties. In this respect, it would be more precise to describe macrophages as M1-like and M2-like.
Collapse
Affiliation(s)
- Zuzana Strizova
- Department of Immunology, Second Faculty of Medicine, Charles University and University Hospital Motol, V Uvalu 84, 15006, Prague, Czech Republic
| | - Iva Benesova
- Department of Immunology, Second Faculty of Medicine, Charles University and University Hospital Motol, V Uvalu 84, 15006, Prague, Czech Republic
| | - Robin Bartolini
- Chemokine Research Group, Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8TT, U.K
| | - Rene Novysedlak
- Third Department of Surgery, First Faculty of Medicine, Charles University and University Hospital Motol, V Uvalu 84, 15006, Prague, Czech Republic
| | - Eva Cecrdlova
- Department of Clinical and Transplant Immunology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Lily Koumbas Foley
- Chemokine Research Group, Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8TT, U.K
| | - Ilja Striz
- Department of Clinical and Transplant Immunology, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
- Institute of Immunology and Microbiology, First Faculty of Medicine, Charles University, Prague, Czech Republic
| |
Collapse
|
20
|
Li G, Qiang Y, Li H, Li X, Dao M, Karniadakis GE. In silico and in vitro study of the adhesion dynamics of erythrophagocytosis in sickle cell disease. Biophys J 2023; 122:2590-2604. [PMID: 37231647 PMCID: PMC10323029 DOI: 10.1016/j.bpj.2023.05.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 04/12/2023] [Accepted: 05/18/2023] [Indexed: 05/27/2023] Open
Abstract
Erythrophagocytosis occurring in the spleen is a critical process for removing senescent and diseased red blood cells (RBCs) from the microcirculation. Although some progress has been made in understanding how the biological signaling pathways mediate the phagocytic processes, the role of the biophysical interaction between RBCs and macrophages, particularly under pathological conditions such as sickle cell disease, has not been adequately studied. Here, we combine computational simulations with microfluidic experiments to quantify RBC-macrophage adhesion dynamics under flow conditions comparable to those in the red pulp of the spleen. We also investigate the RBC-macrophage interaction under normoxic and hypoxic conditions. First, we calibrate key model parameters in the adhesion model using microfluidic experiments for normal and sickle RBCs under normoxia and hypoxia. We then study the adhesion dynamics between the RBC and the macrophage. Our simulation illustrates three typical adhesion states, each characterized by a distinct dynamic motion of the RBCs, namely firm adhesion, flipping adhesion, and no adhesion (either due to no contact with macrophages or detachment from the macrophages). We also track the number of bonds formed when RBCs and macrophages are in contact, as well as the contact area between the two interacting cells, providing mechanistic explanations for the three adhesion states observed in the simulations and microfluidic experiments. Furthermore, we quantify, for the first time to our knowledge, the adhesive forces between RBCs (normal and sickle) and macrophages under different oxygenated conditions. Our results show that the adhesive forces between normal cells and macrophages under normoxia are in the range of 33-58 pN and 53-92 pN for sickle cells under normoxia and 155-170 pN for sickle cells under hypoxia. Taken together, our microfluidic and simulation results improve our understanding of the biophysical interaction between RBCs and macrophages in sickle cell disease and provide a solid foundation for investigating the filtration function of the splenic macrophages under physiological and pathological conditions.
Collapse
Affiliation(s)
- Guansheng Li
- Division of Applied Mathematics, Brown University, Providence, Rhode Island
| | - Yuhao Qiang
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - He Li
- School of Chemical, Materials and Biomedical Engineering, University of Georgia, Athens, Georgia.
| | - Xuejin Li
- Department of Engineering Mechanics and Center for X-Mechanics, Zhejiang University, Hangzhou, China
| | - Ming Dao
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts.
| | | |
Collapse
|
21
|
Cabana-Puig X, Lu R, Geng S, Michaelis JS, Oakes V, Armstrong C, Testerman JC, Liao X, Alajoleen R, Appiah M, Zhang Y, Reilly CM, Li L, Luo XM. CX 3CR1 modulates SLE-associated glomerulonephritis and cardiovascular disease in MRL/lpr mice. Inflamm Res 2023; 72:1083-1097. [PMID: 37060359 PMCID: PMC10748465 DOI: 10.1007/s00011-023-01731-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 03/31/2023] [Accepted: 04/05/2023] [Indexed: 04/16/2023] Open
Abstract
OBJECTIVE Patients with systemic lupus erythematosus (SLE) often develop multi-organ damages including heart and kidney complications. We sought to better define the underlying mechanisms with a focus on the chemokine receptor CX3CR1. METHODS We generated Cx3cr1-deficient MRL/lpr lupus-prone mice through backcrossing. We then employed heterozygous intercross to generate MRL/lpr littermates that were either sufficient or deficient of CX3CR1. The mice were also treated with either Lactobacillus spp. or a high-fat diet (HFD) followed by assessments of the kidney and heart, respectively. RESULTS Cx3cr1-/- MRL/lpr mice exhibited a distinct phenotype of exacerbated glomerulonephritis compared to Cx3cr1+/+ littermates, which was associated with a decrease of spleen tolerogenic marginal zone macrophages and an increase of double-negative T cells. Interestingly, upon correction of the gut microbiota with Lactobacillus administration, the phenotype of exacerbated glomerulonephritis was reversed, suggesting that CX3CR1 controls glomerulonephritis in MRL/lpr mice through a gut microbiota-dependent mechanism. Upon treatment with HFD, Cx3cr1-/- MRL/lpr mice developed significantly more atherosclerotic plaques that were promoted by Ly6C+ monocytes. Activated monocytes expressed ICOS-L that interacted with ICOS-expressing follicular T-helper cells, which in turn facilitated a germinal center reaction to produce more autoantibodies. Through a positive feedback mechanism, the increased circulatory autoantibodies further promoted the activation of Ly6C+ monocytes and their display of ICOS-L. CONCLUSIONS We uncovered novel, Cx3cr1 deficiency-mediated pathogenic mechanisms contributing to SLE-associated glomerulonephritis and cardiovascular disease.
Collapse
Affiliation(s)
- Xavier Cabana-Puig
- Department of Biomedical Sciences and Pathobiology, Virginia Tech, Blacksburg, VA, USA
| | - Ran Lu
- Department of Biomedical Sciences and Pathobiology, Virginia Tech, Blacksburg, VA, USA
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA, USA
| | - Shuo Geng
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA, USA
| | - Jacquelyn S Michaelis
- Center for Bioinformatics and Computational Biology, University of Maryland, College Park, MD, USA
| | - Vanessa Oakes
- Department of Biomedical Sciences and Pathobiology, Virginia Tech, Blacksburg, VA, USA
| | - Caitlin Armstrong
- Department of Biomedical Sciences and Pathobiology, Virginia Tech, Blacksburg, VA, USA
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA, USA
| | - James C Testerman
- Department of Biomedical Sciences and Pathobiology, Virginia Tech, Blacksburg, VA, USA
| | - Xiaofeng Liao
- Department of Biomedical Sciences and Pathobiology, Virginia Tech, Blacksburg, VA, USA
| | - Razan Alajoleen
- Department of Biomedical Sciences and Pathobiology, Virginia Tech, Blacksburg, VA, USA
| | - Michael Appiah
- Department of Biomedical Sciences and Pathobiology, Virginia Tech, Blacksburg, VA, USA
| | - Yao Zhang
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA, USA
| | | | - Liwu Li
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA, USA.
| | - Xin M Luo
- Department of Biomedical Sciences and Pathobiology, Virginia Tech, Blacksburg, VA, USA.
| |
Collapse
|
22
|
de Salles ÉM, Raeder PL, Angeli CB, Santiago VF, de Souza CN, Ramalho T, Câmara NOS, Palmisano G, Álvarez JM, D'Império Lima MR. P2RX7 signaling drives the differentiation of Th1 cells through metabolic reprogramming for aerobic glycolysis. Front Immunol 2023; 14:1140426. [PMID: 36993971 PMCID: PMC10040773 DOI: 10.3389/fimmu.2023.1140426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 02/24/2023] [Indexed: 03/16/2023] Open
Abstract
Introduction This study provides evidence of how Th1 cell metabolism is modulated by the purinergic receptor P2X7 (P2RX7), a cation cannel activated by high extracellular concentrations of adenosine triphosphate (ATP). Methods In vivo analysis was performed in the Plasmodium chabaudi model of malaria in view of the great relevance of this infectious disease for human health, as well as the availability of data concerning Th1/Tfh differentiation. Results We show that P2RX7 induces T-bet expression and aerobic glycolysis in splenic CD4+ T cells that respond to malaria, at a time prior to Th1/Tfh polarization. Cell-intrinsic P2RX7 signaling sustains the glycolytic pathway and causes bioenergetic mitochondrial stress in activated CD4+ T cells. We also show in vitro the phenotypic similarities of Th1-conditioned CD4+ T cells that do not express P2RX7 and those in which the glycolytic pathway is pharmacologically inhibited. In addition, in vitro ATP synthase blockade and the consequent inhibition of oxidative phosphorylation, which drives cellular metabolism for aerobic glycolysis, is sufficient to promote rapid CD4+ T cell proliferation and polarization to the Th1 profile in the absence of P2RX7. Conclusion These data demonstrate that P2RX7-mediated metabolic reprograming for aerobic glycolysis is a key event for Th1 differentiation and suggest that ATP synthase inhibition is a downstream effect of P2RX7 signaling that potentiates the Th1 response.
Collapse
Affiliation(s)
- Érika Machado de Salles
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Paulo Lisboa Raeder
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Claudia Blanes Angeli
- Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Verônica Feijoli Santiago
- Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Cristiane Naffah de Souza
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Theresa Ramalho
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Niels Olsen Saraiva Câmara
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Giuseppe Palmisano
- Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - José Maria Álvarez
- Departamento de Imunologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | | |
Collapse
|
23
|
Kumar M, Kulkarni P, Liu S, Chemuturi N, Shah DK. Nanoparticle biodistribution coefficients: A quantitative approach for understanding the tissue distribution of nanoparticles. Adv Drug Deliv Rev 2023; 194:114708. [PMID: 36682420 DOI: 10.1016/j.addr.2023.114708] [Citation(s) in RCA: 36] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 12/26/2022] [Accepted: 01/17/2023] [Indexed: 01/22/2023]
Abstract
The objective of this manuscript is to provide quantitative insights into the tissue distribution of nanoparticles. Published pharmacokinetics of nanoparticles in plasma, tumor and 13 different tissues of mice were collected from literature. A total of 2018 datasets were analyzed and biodistribution of graphene oxide, lipid, polymeric, silica, iron oxide and gold nanoparticles in different tissues was quantitatively characterized using Nanoparticle Biodistribution Coefficients (NBC). It was observed that typically after intravenous administration most of the nanoparticles are accumulated in the liver (NBC = 17.56 %ID/g) and spleen (NBC = 12.1 %ID/g), while other tissues received less than 5 %ID/g. NBC values for kidney, lungs, heart, bones, brain, stomach, intestine, pancreas, skin, muscle and tumor were found to be 3.1 %ID/g, 2.8 %ID/g, 1.8 %ID/g, 0.9 %ID/g, 0.3 %ID/g, 1.2 %ID/g, 1.8 %ID/g, 1.2 %ID/g, 1.0 %ID/g, 0.6 %ID/g and 3.4 %ID/g, respectively. Significant variability in nanoparticle distribution was observed in certain organs such as liver, spleen and lungs. A large fraction of this variability could be explained by accounting for the differences in nanoparticle physicochemical properties such as size and material. A critical overview of published nanoparticle physiologically-based pharmacokinetic (PBPK) models is provided, and limitations in our current knowledge about in vitro and in vivo pharmacokinetics of nanoparticles that restrict the development of robust PBPK models is also discussed. It is hypothesized that robust quantitative assessment of whole-body pharmacokinetics of nanoparticles and development of mathematical models that can predict their disposition can improve the probability of successful clinical translation of these modalities.
Collapse
Affiliation(s)
- Mokshada Kumar
- Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, The State University of New York at Buffalo, United States
| | - Priyanka Kulkarni
- Drug Metabolism and Pharmacokinetics, R&D, Takeda Pharmaceuticals, Cambridge, MA, United States
| | - Shufang Liu
- Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, The State University of New York at Buffalo, United States
| | - Nagendra Chemuturi
- Drug Metabolism and Pharmacokinetics, R&D, Takeda Pharmaceuticals, Cambridge, MA, United States.
| | - Dhaval K Shah
- Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, The State University of New York at Buffalo, United States.
| |
Collapse
|
24
|
Schaier M, Theiner S, Baier D, Braun G, Berger W, Koellensperger G. Multiparametric Tissue Characterization Utilizing the Cellular Metallome and Immuno-Mass Spectrometry Imaging. JACS AU 2023; 3:419-428. [PMID: 36873697 PMCID: PMC9975846 DOI: 10.1021/jacsau.2c00571] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 01/23/2023] [Accepted: 01/23/2023] [Indexed: 05/16/2023]
Abstract
In this study, we present a workflow that enables spatial single-cell metallomics in tissue decoding the cellular heterogeneity. Low-dispersion laser ablation in combination with inductively coupled plasma time-of-flight mass spectrometry (LA-ICP-TOFMS) provides mapping of endogenous elements with cellular resolution at unprecedented speed. Capturing the heterogeneity of the cellular population by metals only is of limited use as the cell type, functionality, and cell state remain elusive. Therefore, we expanded the toolbox of single-cell metallomics by integrating the concepts of imaging mass cytometry (IMC). This multiparametric assay successfully utilizes metal-labeled antibodies for cellular tissue profiling. One important challenge is the need to preserve the original metallome in the sample upon immunostaining. Therefore, we studied the impact of extensive labeling on the obtained endogenous cellular ionome data by quantifying elemental levels in consecutive tissue sections (with and without immunostaining) and correlating elements with structural markers and histological features. Our experiments showed that the elemental tissue distribution remained intact for selected elements such as sodium, phosphorus, and iron, while absolute quantification was precluded. We hypothesize that this integrated assay not only advances single-cell metallomics (enabling to link metal accumulation to multi-dimensional characterization of cells/cell populations), but in turn also enhances selectivity in IMC, as in selected cases, labeling strategies can be validated by elemental data. We showcase the power of this integrated single-cell toolbox using an in vivo tumor model in mice and provide mapping of the sodium and iron homeostasis as linked to different cell types and function in mouse organs (such as spleen, kidney, and liver). Phosphorus distribution maps added structural information, paralleled by the DNA intercalator visualizing the cellular nuclei. Overall, iron imaging was the most relevant addition to IMC. In tumor samples, for example, iron-rich regions correlated with high proliferation and/or located blood vessels, which are key for potential drug delivery.
Collapse
Affiliation(s)
- Martin Schaier
- Institute
of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 38, Vienna 1090, Austria
- Vienna
Doctoral School in Chemistry (DoSChem), University of Vienna, Waehringer Strasse 42, Vienna 1090, Austria
| | - Sarah Theiner
- Institute
of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 38, Vienna 1090, Austria
- . Phone: +43-1-4277-52384
| | - Dina Baier
- Institute
of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 42, Vienna 1090, Austria
- Institute
of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Borschkegasse 8A, Vienna 1090, Austria
| | - Gabriel Braun
- Institute
of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 38, Vienna 1090, Austria
- Vienna
Doctoral School in Chemistry (DoSChem), University of Vienna, Waehringer Strasse 42, Vienna 1090, Austria
| | - Walter Berger
- Institute
of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Borschkegasse 8A, Vienna 1090, Austria
| | - Gunda Koellensperger
- Institute
of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 38, Vienna 1090, Austria
- . Phone: +43-1-4277-52303
| |
Collapse
|
25
|
Balfourier A, Tsolaki E, Heeb L, Starsich FHL, Klose D, Boss A, Gupta A, Gogos A, Herrmann IK. Multiscale Multimodal Investigation of the Intratissural Biodistribution of Iron Nanotherapeutics with Single Cell Resolution Reveals Co-Localization with Endogenous Iron in Splenic Macrophages. SMALL METHODS 2023; 7:e2201061. [PMID: 36572638 DOI: 10.1002/smtd.202201061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 12/02/2022] [Indexed: 06/18/2023]
Abstract
Imaging of iron-based nanoparticles (NPs) remains challenging because of the presence of endogenous iron in tissues that is difficult to distinguish from exogenous iron originating from the NPs. Here, an analytical cascade for characterizing the biodistribution of biomedically relevant iron-based NPs from the organ scale to the cellular and subcellular scales is introduced. The biodistribution on an organ level is assessed by elemental analysis and quantification of magnetic iron by electron paramagnetic resonance, which allowed differentiation of exogenous and endogenous iron. Complementary to these bulk analysis techniques, correlative whole-slide optical and electron microscopy provided spatially resolved insight into the biodistribution of endo- and exogenous iron accumulation in macrophages, with single-cell and single-particle resolution, revealing coaccumulation of iron NPs with endogenous iron in splenic macrophages. Subsequent transmission electron microscopy revealed two types of morphologically distinct iron-containing structures (exogenous nanoparticles and endogenous ferritin) within membrane-bound vesicles in the cytoplasm, hinting at an attempt of splenic macrophages to extract and recycle iron from exogenous nanoparticles. Overall, this strategy enables the distinction of endo- and exogenous iron across scales (from cm to nm, based on the analysis of thousands of cells) and illustrates distribution on organ, cell, and organelle levels.
Collapse
Affiliation(s)
- Alice Balfourier
- Nanoparticle Systems Engineering Laboratory, Institute of Energy and Process Engineering (IEPE), Department of Mechanical and Process Engineering (D-MAVT), ETH Zurich, 8092, Zürich, Switzerland
- Particles-Biology Interactions Laboratory, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa), 9014, St. Gallen, Switzerland
| | - Elena Tsolaki
- Nanoparticle Systems Engineering Laboratory, Institute of Energy and Process Engineering (IEPE), Department of Mechanical and Process Engineering (D-MAVT), ETH Zurich, 8092, Zürich, Switzerland
- Particles-Biology Interactions Laboratory, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa), 9014, St. Gallen, Switzerland
| | - Laura Heeb
- Department of Visceral and Transplantation Surgery and Swiss HPB Center, University Hospital Zurich, 8091, Zürich, Switzerland
| | - Fabian H L Starsich
- Nanoparticle Systems Engineering Laboratory, Institute of Energy and Process Engineering (IEPE), Department of Mechanical and Process Engineering (D-MAVT), ETH Zurich, 8092, Zürich, Switzerland
- Particles-Biology Interactions Laboratory, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa), 9014, St. Gallen, Switzerland
| | - Daniel Klose
- Department of Chemistry and Applied Biosciences, ETH Zurich, 8093, Zürich, Switzerland
| | - Andreas Boss
- Department of Radiology, University Hospital Zurich, 8091, Zürich, Switzerland
| | - Anurag Gupta
- Department of Visceral and Transplantation Surgery and Swiss HPB Center, University Hospital Zurich, 8091, Zürich, Switzerland
| | - Alexander Gogos
- Nanoparticle Systems Engineering Laboratory, Institute of Energy and Process Engineering (IEPE), Department of Mechanical and Process Engineering (D-MAVT), ETH Zurich, 8092, Zürich, Switzerland
- Particles-Biology Interactions Laboratory, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa), 9014, St. Gallen, Switzerland
| | - Inge K Herrmann
- Nanoparticle Systems Engineering Laboratory, Institute of Energy and Process Engineering (IEPE), Department of Mechanical and Process Engineering (D-MAVT), ETH Zurich, 8092, Zürich, Switzerland
- Particles-Biology Interactions Laboratory, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa), 9014, St. Gallen, Switzerland
| |
Collapse
|
26
|
Ghosh R, Dey R, Sawoo R, Bishayi B. Simultaneous neutralization of TGF-β and IL-6 attenuates Staphylococcus aureus-induced arthritic inflammation through differential modulation of splenic and synovial macrophages. Scand J Immunol 2023; 97:e13252. [PMID: 36597222 DOI: 10.1111/sji.13252] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 11/11/2022] [Accepted: 12/31/2022] [Indexed: 01/05/2023]
Abstract
Septic arthritis is a joint disease caused by Staphylococcus aureus. Different macrophage populations contribute in various ways to control blood-borne infections and induce inflammatory responses. Macrophage tissue-resident niche is necessary for the suppression of chronic inflammation and may contribute to the pathogenesis of septic arthritis. Thus, to obtain a resolution of the disease and restoration of synovial homeostasis, it needs the activation of macrophages that further regulate the inflammatory consequences. The aim of this study was to find out the mechanism by which neutralization of transforming growth factor-beta (TGF-β) and/or interleukin (IL)-6 after induction of septic arthritis could alter the specific macrophage responses in spleen and synovial joints via different cytokines (osteoprotegerin (OPG), osteopontin (OPN), IL-10, IL-12 and CXCL8) cross-talking, and how the response could be modulated by reactive oxygen species vs antioxidant enzyme activities. Dual neutralization of TGF-β and IL-6 is notably effective in eliciting splenic and synovial tissue-resident macrophage responses. Synovial macrophage-derived IL-10 can elicit protection against septic arthritis via regulating receptor-activated nuclear factor Kappa-B ligand (RANKL)/OPG interaction. They also reduced oxidative stress by increasing the activity of antioxidant enzymes including SOD and catalase. Histopathological analysis revealed that dual neutralization of TGF-β and IL-6 prevented bone destruction and osteoclastic activity in septic arthritis by promoting the differential functional response of the splenic and synovial macrophages. Additionally, the macrophage-derived IL-10 can elicit protection against S. aureus-induced septic arthritis via regulating RANKL/OPG interaction. Further studies on STAT3 and STAT4 are needed for the understanding of such cross-talking in resident macrophages of arthritic mice.
Collapse
Affiliation(s)
- Rituparna Ghosh
- Immunology Laboratory, Department of Physiology, University of Calcutta, University Colleges of Science and Technology, Calcutta, West Bengal, India
| | - Rajen Dey
- Immunology Laboratory, Department of Physiology, University of Calcutta, University Colleges of Science and Technology, Calcutta, West Bengal, India
| | - Ritasha Sawoo
- Immunology Laboratory, Department of Physiology, University of Calcutta, University Colleges of Science and Technology, Calcutta, West Bengal, India
| | - Biswadev Bishayi
- Immunology Laboratory, Department of Physiology, University of Calcutta, University Colleges of Science and Technology, Calcutta, West Bengal, India
| |
Collapse
|
27
|
Muacevic A, Adler JR, Miyamoto T, Yamamoto N, Endo K. Steroid Rebound Phenomenon as a Cause of Delayed Cerebral Vasospasm in Post-Splenectomy Pneumococcal Meningitis: A Case Report. Cureus 2023; 15:e33439. [PMID: 36628397 PMCID: PMC9822532 DOI: 10.7759/cureus.33439] [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] [Accepted: 01/06/2023] [Indexed: 01/09/2023] Open
Abstract
Pneumococcal meningitis as an overwhelming post-splenectomy infection (OPSI) has a higher risk of neurological complications and is sometimes life-threatening. In acute pneumococcal meningitis, four days of dexamethasone is widely used for the prevention of neurological complications. Herein, we report a 68-year-old woman with the diagnosis of pneumococcal meningitis as OPSI. With adequate antibiotics and dexamethasone, her symptoms gradually improved. However, after dexamethasone withdrawal, her consciousness got worse and got into a coma. Brain magnetic resonance imaging revealed acute cerebral infarctions in the bilateral middle cerebral artery territory with multiple vascular stenoses and hydrocephalus. Vascular stenoses improved by follow-up, suggesting cerebral vasospasm. There were no suggestive findings of cerebral vasculitis. Follow-up cerebrospinal fluid analysis showed remained pleocytosis with no bacteria, which could not suggest meningitis recurrence. Since steroid therapy was rapidly withdrawn, we diagnosed that the cerebral vasospasm was due to the steroid rebound phenomenon. The steroid rebound phenomenon due to the excessive immune response to bacterial microstructures has been reported in pneumococcal meningitis. Especially, the present case was asplenia and the usual dexamethasone use would not adequately suppress the immune response to bacterial microstructures. Since pneumococcal meningitis as OPSI has a higher risk of neurological complications, clinicians should consider longer and more cautious steroid tapering.
Collapse
|
28
|
Portilla Y, Fernández-Afonso Y, Pérez-Yagüe S, Mulens-Arias V, Morales MP, Gutiérrez L, Barber DF. Different coatings on magnetic nanoparticles dictate their degradation kinetics in vivo for 15 months after intravenous administration in mice. J Nanobiotechnology 2022; 20:543. [PMID: 36578018 PMCID: PMC9795732 DOI: 10.1186/s12951-022-01747-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 12/15/2022] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND The surface coating of iron oxide magnetic nanoparticle (MNPs) drives their intracellular trafficking and degradation in endolysosomes, as well as dictating other cellular outcomes. As such, we assessed whether MNP coatings might influence their biodistribution, their accumulation in certain organs and their turnover therein, processes that must be understood in vivo to optimize the design of nanoformulations for specific therapeutic/diagnostic needs. RESULTS In this study, three different MNP coatings were analyzed, each conferring the identical 12 nm iron oxide cores with different physicochemical characteristics: 3-aminopropyl-triethoxysilane (APS), dextran (DEX), and dimercaptosuccinic acid (DMSA). When the biodistribution of these MNPs was analyzed in C57BL/6 mice, they all mainly accumulated in the spleen and liver one week after administration. The coating influenced the proportion of the MNPs in each organ, with more APS-MNPs accumulating in the spleen and more DMSA-MNPs accumulating in the liver, remaining there until they were fully degraded. The changes in the physicochemical properties of the MNPs (core size and magnetic properties) was also assessed during their intracellular degradation when internalized by two murine macrophage cell lines. The decrease in the size of the MNPs iron core was influenced by their coating and the organ in which they accumulated. Finally, MNP degradation was analyzed in the liver and spleen of C57BL/6 mice from 7 days to 15 months after the last intravenous MNP administration. CONCLUSIONS The MNPs degraded at different rates depending on the organ and their coating, the former representing the feature that was fundamental in determining the time they persisted. In the liver, the rate of degradation was similar for all three coatings, and it was faster than in the spleen. This information regarding the influence of coatings on the in vivo degradation of MNPs will help to choose the best coating for each biomedical application depending on the specific clinical requirements.
Collapse
Affiliation(s)
- Yadileiny Portilla
- Department of Immunology and Oncology and the NanoBiomedicine Initiative, Centro Nacional de Biotecnología (CNB)/CSIC, Darwin 3, Cantoblanco, 28049, Madrid, Spain
| | - Yilian Fernández-Afonso
- Departamento de Química Analítica, Instituto de Nanociencia Y Materiales de Aragón (INMA), Universidad de Zaragoza, CSIC and CIBER-BBN, 50018, Zaragoza, Spain
| | - Sonia Pérez-Yagüe
- Department of Immunology and Oncology and the NanoBiomedicine Initiative, Centro Nacional de Biotecnología (CNB)/CSIC, Darwin 3, Cantoblanco, 28049, Madrid, Spain
| | - Vladimir Mulens-Arias
- Department of Immunology and Oncology and the NanoBiomedicine Initiative, Centro Nacional de Biotecnología (CNB)/CSIC, Darwin 3, Cantoblanco, 28049, Madrid, Spain
- Integrative Biomedical Materials and Nanomedicine Laboratory, Department of Medicine and Life Sciences (MELIS), Pompeu Fabra University, Carrer Doctor Aiguader 88, 08003, Barcelona, Spain
| | - M Puerto Morales
- Department of Energy, Environment and Health, Instituto de Ciencia de Materiales de Madrid (ICMM-CSIC), Sor Juana Inés de La Cruz 3, 28049, Madrid, Spain
| | - Lucía Gutiérrez
- Departamento de Química Analítica, Instituto de Nanociencia Y Materiales de Aragón (INMA), Universidad de Zaragoza, CSIC and CIBER-BBN, 50018, Zaragoza, Spain.
| | - Domingo F Barber
- Department of Immunology and Oncology and the NanoBiomedicine Initiative, Centro Nacional de Biotecnología (CNB)/CSIC, Darwin 3, Cantoblanco, 28049, Madrid, Spain.
| |
Collapse
|
29
|
Porto-Pedrosa MLM, de Miranda CDM, Lopes ME, Nakagaki BN, Mafra K, de Paula CMP, Diniz AB, Costa KMDO, Antunes MM, Oliveira AG, Balderas R, Lopes RP, Menezes GB. High-dimensional intravital microscopy reveals major changes in splenic immune system during postnatal development. Front Immunol 2022; 13:1002919. [PMID: 36531990 PMCID: PMC9755845 DOI: 10.3389/fimmu.2022.1002919] [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: 07/25/2022] [Accepted: 11/10/2022] [Indexed: 12/05/2022] Open
Abstract
Spleen is a key organ for immunologic surveillance, acting as a firewall for antigens and parasites that spread through the blood. However, how spleen leukocytes evolve across the developmental phase, and how they spatially organize and interact in vivo is still poorly understood. Using a novel combination of selected antibodies and fluorophores to image in vivo the spleen immune environment, we described for the first time the dynamics of immune development across postnatal period. We found that spleens from adults and infants had similar numbers and arrangement of lymphoid cells. In contrast, splenic immune environment in newborns is sharply different from adults in almost all parameters analysed. Using this in vivo approach, B cells were the most frequent subtype throughout the development. Also, we revealed how infections - using a model of malaria - can change the spleen immune profile in adults and infants, which could become the key to understanding different severity grades of infection. Our new imaging solutions can be extremely useful for different groups in all areas of biological investigation, paving a way for new intravital approaches and advances.
Collapse
Affiliation(s)
- Maria Luiza Mundim Porto-Pedrosa
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Camila Dutra Moreira de Miranda
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Mateus Eustáquio Lopes
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Brenda Naemi Nakagaki
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Kassiana Mafra
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Cristina Maria Pinto de Paula
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Ariane Barros Diniz
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Karen Marques de Oliveira Costa
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Maisa Mota Antunes
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - André Gustavo Oliveira
- Departamento de Fisiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Robert Balderas
- BD Biosciences, Department of Biological Sciences, San Jose, CA, United States
| | - Rodrigo Pestana Lopes
- BD Biosciences, Department of Medical & Scientific Affairs, São Paulo, São Paulo, Brazil
| | - Gustavo Batista Menezes
- Center for Gastrointestinal Biology, Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil,*Correspondence: Gustavo Batista Menezes,
| |
Collapse
|
30
|
Vázquez-Carballo C, Herencia C, Guerrero-Hue M, García-Caballero C, Rayego-Mateos S, Morgado-Pascual JL, Opazo-Rios L, González-Guerrero C, Vallejo-Mudarra M, Cortegano I, Gaspar ML, de Andrés B, Egido J, Moreno JA. Role of Toll-like receptor 4 in intravascular hemolysis-mediated injury. J Pathol 2022; 258:236-249. [PMID: 35903022 DOI: 10.1002/path.5995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 07/17/2022] [Accepted: 07/25/2022] [Indexed: 01/07/2023]
Abstract
Massive intravascular hemolysis is a common characteristic of several pathologies. It is associated with the release of large quantities of heme into the circulation, promoting injury in vulnerable organs, mainly kidney, liver, and spleen. Heme activates Toll-like receptor 4 (TLR4), a key regulator of the inflammatory response; however, the role of TLR4 in hemolysis and whether inhibition of this receptor may protect from heme-mediated injury are unknown. We induced intravascular hemolysis by injection of phenylhydrazine in wildtype and Tlr4-knockout mice. In this model, we analyzed physiological parameters, histological damage, inflammation and cell death in kidney, liver, and spleen. We also evaluated whether heme-mediated-inflammatory effects were prevented by TLR4 inhibition with the compound TAK-242, both in vivo and in vitro. Induction of massive hemolysis elicited acute kidney injury characterized by loss of renal function, morphological alterations of the tubular epithelium, cell death, and inflammation. These pathological effects were significantly ameliorated in the TLR4-deficient mice and in wildtype mice treated with TAK-242. In vitro studies showed that TAK-242 pretreatment reduced heme-mediated inflammation by inhibiting the TLR4/NF-κB (nuclear factor kappa B) axis. However, analysis in liver and spleen indicated that TLR4 deficiency did not protect against the toxic accumulation of heme in these organs. In conclusion, TLR4 is a key molecule involved in the renal inflammatory response triggered by massive intravascular hemolysis. TLR4 inhibition may be a potential therapeutic approach to prevent renal damage in patients suffering from hemolysis. © 2022 The Authors. The Journal of Pathology published by John Wiley & Sons Ltd on behalf of The Pathological Society of Great Britain and Ireland.
Collapse
Affiliation(s)
- Cristina Vázquez-Carballo
- Renal, Vascular and Diabetes Research Laboratory, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Madrid, Spain
| | - Carmen Herencia
- Renal, Vascular and Diabetes Research Laboratory, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Madrid, Spain
| | - Melania Guerrero-Hue
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), UGC Nefrología, Hospital Universitario Reina Sofía, Córdoba, Spain
| | - Cristina García-Caballero
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), UGC Nefrología, Hospital Universitario Reina Sofía, Córdoba, Spain
| | - Sandra Rayego-Mateos
- Renal, Vascular and Diabetes Research Laboratory, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Madrid, Spain
| | - José Luis Morgado-Pascual
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), UGC Nefrología, Hospital Universitario Reina Sofía, Córdoba, Spain.,Department of Cell Biology, Physiology and Immunology, University of Cordoba, Cordoba, Spain
| | - Lucas Opazo-Rios
- Renal, Vascular and Diabetes Research Laboratory, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Madrid, Spain.,Health Science Faculty, Universidad de Las Américas, Concepción-Talcahuano, Chile
| | - Cristian González-Guerrero
- Renal, Vascular and Diabetes Research Laboratory, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Madrid, Spain
| | - Mercedes Vallejo-Mudarra
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), UGC Nefrología, Hospital Universitario Reina Sofía, Córdoba, Spain
| | - Isabel Cortegano
- Immunobiology Department, Carlos III Health Institute, Madrid, Spain
| | | | - Belén de Andrés
- Immunobiology Department, Carlos III Health Institute, Madrid, Spain
| | - Jesús Egido
- Renal, Vascular and Diabetes Research Laboratory, IIS-Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Madrid, Spain.,Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain
| | - Juan Antonio Moreno
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), UGC Nefrología, Hospital Universitario Reina Sofía, Córdoba, Spain.,Department of Cell Biology, Physiology and Immunology, University of Cordoba, Cordoba, Spain.,Biomedical Research Networking Center on Cardiovascular Diseases (CIBERCV), Madrid, Spain
| |
Collapse
|
31
|
Blagovic K, Smith CK, Ramakrishnan A, Moore L, Soto DR, Thompson Z, Stockmann AP, Kruszelnicki S, Thakkar A, Murray J, Torres S, Wondimagegnhu B, Yi R, Dadgar M, Paracha AM, Page C, Clear L, Chaudhry OA, Myint M, Bridgen DT, Gilbert JB, Seidl KJ, Sharei A, Loughhead S, Bernstein H, Yarar D. Engineered red blood cells (activating antigen carriers) drive potent T cell responses and tumor regression in mice. Front Immunol 2022; 13:1015585. [PMID: 36263022 PMCID: PMC9573954 DOI: 10.3389/fimmu.2022.1015585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 09/14/2022] [Indexed: 11/22/2022] Open
Abstract
Activation of T cell responses is essential for effective tumor clearance; however, inducing targeted, potent antigen presentation to stimulate T cell responses remains challenging. We generated Activating Antigen Carriers (AACs) by engineering red blood cells (RBCs) to encapsulate relevant tumor antigens and the adjuvant polyinosinic-polycytidylic acid (poly I:C), for use as a tumor-specific cancer vaccine. The processing method and conditions used to create the AACs promote phosphatidylserine exposure on RBCs and thus harness the natural process of aged RBC clearance to enable targeting of the AACs to endogenous professional antigen presenting cells (APCs) without the use of chemicals or viral vectors. AAC uptake, antigen processing, and presentation by APCs drive antigen-specific activation of T cells, both in mouse in vivo and human in vitro systems, promoting polyfunctionality of CD8+ T cells and, in a tumor model, driving high levels of antigen-specific CD8+ T cell infiltration and tumor killing. The efficacy of AAC therapy was further enhanced by combination with the chemotherapeutic agent Cisplatin. In summary, these findings support AACs as a potential vector-free immunotherapy strategy to enable potent antigen presentation and T cell stimulation by endogenous APCs with broad therapeutic potential.
Collapse
|
32
|
Chowdhury S, Trivedi AK. Origin, production and molecular determinants of macrophages for their therapeutic targeting. Cell Biol Int 2022; 47:15-29. [PMID: 36183367 DOI: 10.1002/cbin.11914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 09/04/2022] [Accepted: 09/16/2022] [Indexed: 11/09/2022]
Abstract
Macrophages, the most heterogeneous cells of the hematopoietic system and the giant eaters of the immune system that present either as tissue-resident cells or infiltrated immune cells, eliminate foreign pathogens and microbes and also play different physiological roles to maintain the body's immune response. In this review, we basically provide a broad overview of macrophages from their origin, functional diversity to M1-M2 polarization, specialized markers, and their role as important therapeutic targets in different diseases based on the current research and evidence. Apart from this, we have precisely discussed about tumor-associated macrophages (TAMs) and their role in tumor progression and newly discovered lesser-known markers of TAMs that could be used as potential therapeutic targets to treat life-threatening diseases. It is really very important to understand the diversity of macrophages to develop TAM-modulating strategies to activate our own immune system against diseases and to overcome immune resistance.
Collapse
Affiliation(s)
- Sangita Chowdhury
- LSS008 Division of Cancer Biology, CSIR-Central Drug Research Institute, Lucknow, India
| | - Arun K Trivedi
- LSS008 Division of Cancer Biology, CSIR-Central Drug Research Institute, Lucknow, India
| |
Collapse
|
33
|
Myeloperoxidase as a Marker to Differentiate Mouse Monocyte/Macrophage Subsets. Int J Mol Sci 2022; 23:ijms23158246. [PMID: 35897821 PMCID: PMC9330004 DOI: 10.3390/ijms23158246] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/21/2022] [Accepted: 07/23/2022] [Indexed: 02/01/2023] Open
Abstract
Macrophages are present in every tissue in the body and play essential roles in homeostasis and host defense against microorganisms. Some tissue macrophages derive from the yolk sac/fetal liver that populate tissues for life. Other tissue macrophages derive from monocytes that differentiate in the bone marrow and circulate through tissues via the blood and lymphatics. Circulating monocytes are very plastic and differentiate into macrophages with specialized functions upon entering tissues. Specialized monocyte/macrophage subsets have been difficult to differentiate based on cell surface markers. Here, using a combination of "pan" monocyte/macrophage markers and flow cytometry, we asked whether myeloperoxidase (MPO) could be used as a marker of pro-inflammatory monocyte/macrophage subsets. MPO is of interest because of its potent microbicidal activity. In wild-type SPF housed mice, we found that MPO+ monocytes/macrophages were present in peripheral blood, spleen, small and large intestines, and mesenteric lymph nodes, but not the central nervous system. Only monocytes/macrophages that expressed cell surface F4/80 and/or Ly6C co-expressed MPO with the highest expression in F4/80HiLy6CHi subsets regardless of tissue. These cumulative data indicate that MPO expression can be used as an additional marker to differentiate between monocyte/macrophage subsets with pro-inflammatory and microbicidal activity in a variety of tissues.
Collapse
|
34
|
Nitrate Utilization Promotes Systemic Infection of Salmonella Typhimurium in Mice. Int J Mol Sci 2022; 23:ijms23137220. [PMID: 35806223 PMCID: PMC9266322 DOI: 10.3390/ijms23137220] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 06/24/2022] [Accepted: 06/27/2022] [Indexed: 02/07/2023] Open
Abstract
Salmonella Typhimurium is an invasive enteric pathogen that causes gastroenteritis in humans and life-threatening systemic infections in mice. During infection of the intestine, S. Typhimurium can exploit nitrate as an electron acceptor to enhance its growth. However, the roles of nitrate on S. Typhimurium systemic infection are unknown. In this study, nitrate levels were found to be significantly increased in the liver and spleen of mice systemically infected by S. Typhimurium. Mutations in genes encoding nitrate transmembrane transporter (narK) or nitrate-producing flavohemoprotein (hmpA) decreased the replication of S. Typhimurium in macrophages and reduced systemic infection in vivo, suggesting that nitrate utilization promotes S. Typhimurium systemic virulence. Moreover, nitrate utilization contributes to the acidification of the S. Typhimurium cytoplasm, which can sustain the virulence of S. Typhimurium by increasing the transcription of virulence genes encoding on Salmonella pathogenicity island 2 (SPI-2). Furthermore, the growth advantage of S. Typhimurium conferred by nitrate utilization occurred only under low-oxygen conditions, and the nitrate utilization was activated by both the global regulator Fnr and the nitrate-sensing two-component system NarX-NarL. Collectively, this study revealed a novel mechanism adopted by Salmonella to interact with its host and increase its virulence.
Collapse
|
35
|
Zheng D, Bhuvan T, Payne NL, Heng TSP. Secondary Lymphoid Organs in Mesenchymal Stromal Cell Therapy: More Than Just a Filter. Front Immunol 2022; 13:892443. [PMID: 35784291 PMCID: PMC9243307 DOI: 10.3389/fimmu.2022.892443] [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: 03/09/2022] [Accepted: 05/19/2022] [Indexed: 11/13/2022] Open
Abstract
Mesenchymal stromal cells (MSCs) have demonstrated therapeutic potential in inflammatory models of human disease. However, clinical translation has fallen short of expectations, with many trials failing to meet primary endpoints. Failure to fully understand their mechanisms of action is a key factor contributing to the lack of successful commercialisation. Indeed, it remains unclear how the long-ranging immunomodulatory effects of MSCs can be attributed to their secretome, when MSCs undergo apoptosis in the lung shortly after intravenous infusion. Their apoptotic fate suggests that efficacy is not based solely on their viable properties, but also on the immune response to dying MSCs. The secondary lymphoid organs (SLOs) orchestrate immune responses and play a key role in immune regulation. In this review, we will discuss how apoptotic cells can modify immune responses and highlight the importance of MSC-immune cell interactions in SLOs for therapeutic outcomes.
Collapse
Affiliation(s)
- Di Zheng
- Department of Anatomy and Developmental Biology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Tejasvini Bhuvan
- Department of Anatomy and Developmental Biology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Natalie L. Payne
- Department of Anatomy and Developmental Biology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
- Australian Regenerative Medicine Institute, Monash University, Clayton, VIC, Australia
| | - Tracy S. P. Heng
- Department of Anatomy and Developmental Biology, Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
- ARC Training Centre for Cell and Tissue Engineering Technologies, Monash University, Clayton, VIC, Australia
- *Correspondence: Tracy S. P. Heng,
| |
Collapse
|
36
|
Mawhinney M, Kulle A, Thanabalasuriar A. From infection to repair: Understanding the workings of our innate immune cells. WIREs Mech Dis 2022; 14:e1567. [PMID: 35674186 DOI: 10.1002/wsbm.1567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 04/13/2022] [Accepted: 05/04/2022] [Indexed: 11/06/2022]
Abstract
In a world filled with microbes, some posing a threat to our body, our immune system is key to living a healthy life. The innate immune system is made of various cell types that act to guard our bodies. Unlike the adaptive immune system that has a specific response, our innate immune system encompasses cells that elicit unspecific immune responses, triggered whenever the right signals are detected. Our understanding of immunity started with the concept of our immune system only responding to "nonself" like the pathogens that invade our body. However, over the past few decades, we have learned that the immune system is more than an on/off switch that recognizes nonself. The innate immune system regularly patrols our bodies for pathogens and tissue damage. Our innate immune system not only seeks to resolve infection but also repair tissue injury, through phagocytosing debris and initiating the release of growth factors. Recently, we are starting to see that it is not just recognizing danger, our innate immune system plays a crucial role in repair. Innate immune cells phenotypically change during repair. In the context of severe injury or trauma, our innate immune system is modified quite drastically to help repair, resulting in reduced infection control. Moreover, these changes in immune cell function can be modified by sex as a biological variable. From past to present, in this overview, we provide a summary of the innate immune cells and pathways in infection and tissue repair. This article is categorized under: Immune System Diseases > Molecular and Cellular Physiology.
Collapse
Affiliation(s)
- Martin Mawhinney
- Department of Pharmacology and Therapeutics, Faculty of Medicine, McGill University, Montreal, Quebec, Canada
| | - Amelia Kulle
- Department of Pharmacology and Therapeutics, Faculty of Medicine, McGill University, Montreal, Quebec, Canada
| | - Ajitha Thanabalasuriar
- Department of Pharmacology and Therapeutics, Faculty of Medicine, McGill University, Montreal, Quebec, Canada.,Department of Microbiology and Immunology, Faculty of Medicine, McGill University, Montreal, Quebec, Canada
| |
Collapse
|
37
|
Cao X, Lai SWT, Chen S, Wang S, Feng M. Targeting tumor-associated macrophages for cancer immunotherapy. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2022; 368:61-108. [PMID: 35636930 DOI: 10.1016/bs.ircmb.2022.02.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Tumor-associated macrophages (TAMs) are one of the most abundant immune components in the tumor microenvironment and play a plethora of roles in regulating tumorigenesis. Therefore, the therapeutic targeting of TAMs has emerged as a new paradigm for immunotherapy of cancer. Herein, the review summarizes the origin, polarization, and function of TAMs in the progression of malignant diseases. The understanding of such knowledge leads to several distinct therapeutic strategies to manipulate TAMs to battle cancer, which include those to reduce TAM abundance, such as depleting TAMs or inhibiting their recruitment and differentiation, and those to harness or boost the anti-tumor activities of TAMs such as blocking phagocytosis checkpoints, inducing antibody-dependent cellular phagocytosis, and reprogramming TAM polarization. In addition, modulation of TAMs may reshape the tumor microenvironment and therefore synergize with other cancer therapeutics. Therefore, the rational combination of TAM-targeting therapeutics with conventional therapies including radiotherapy, chemotherapy, and other immunotherapies is also reviewed. Overall, targeting TAMs presents itself as a promising strategy to add to the growing repertoire of treatment approaches in the fight against cancer, and it is hopeful that these approaches currently being pioneered will serve to vastly improve patient outcomes and quality of life.
Collapse
Affiliation(s)
- Xu Cao
- Department of Immuno-Oncology, Beckman Research Institute, City of Hope Comprehensive Cancer Center, Duarte, CA, United States.
| | - Seigmund W T Lai
- Department of Immuno-Oncology, Beckman Research Institute, City of Hope Comprehensive Cancer Center, Duarte, CA, United States
| | - Siqi Chen
- Department of Immuno-Oncology, Beckman Research Institute, City of Hope Comprehensive Cancer Center, Duarte, CA, United States
| | - Sadira Wang
- Department of Immuno-Oncology, Beckman Research Institute, City of Hope Comprehensive Cancer Center, Duarte, CA, United States
| | - Mingye Feng
- Department of Immuno-Oncology, Beckman Research Institute, City of Hope Comprehensive Cancer Center, Duarte, CA, United States.
| |
Collapse
|
38
|
Margraf A, Perretti M. Immune Cell Plasticity in Inflammation: Insights into Description and Regulation of Immune Cell Phenotypes. Cells 2022; 11:cells11111824. [PMID: 35681519 PMCID: PMC9180515 DOI: 10.3390/cells11111824] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 05/28/2022] [Accepted: 05/30/2022] [Indexed: 02/01/2023] Open
Abstract
Inflammation is a life-saving immune reaction occurring in response to invading pathogens. Nonetheless, inflammation can also occur in an uncontrolled, unrestricted manner, leading to chronic disease and organ damage. Mechanisms triggering an inflammatory response, hindering such a response, or leading to its resolution are well-studied but so far insufficiently elucidated with regard to precise therapeutic interventions. Notably, as an immune reaction evolves, requirements and environments for immune cells change, and thus cellular phenotypes adapt and shift, leading to the appearance of distinct cellular subpopulations with new functional features. In this article, we aim to highlight properties of, and overarching regulatory factors involved in, the occurrence of immune cell phenotypes with a special focus on neutrophils, macrophages and platelets. Additionally, we point out implications for both diagnostics and therapeutics in inflammation research.
Collapse
|
39
|
A cardioimmunologist's toolkit: genetic tools to dissect immune cells in cardiac disease. Nat Rev Cardiol 2022; 19:395-413. [PMID: 35523863 DOI: 10.1038/s41569-022-00701-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/25/2022] [Indexed: 02/06/2023]
Abstract
Cardioimmunology is a field that encompasses the immune cells and pathways that modulate cardiac function in homeostasis and regulate the temporal balance between tissue injury and repair in disease. Over the past two decades, genetic fate mapping and high-dimensional sequencing techniques have defined increasing functional heterogeneity of innate and adaptive immune cell populations in the heart and other organs, revealing a complexity not previously appreciated and challenging established frameworks for the immune system. Given these rapid advances, understanding how to use these tools has become crucial. However, cardiovascular biologists without immunological expertise might not be aware of the strengths and caveats of immune-related tools and how they can be applied to examine the pathogenesis of myocardial diseases. In this Review, we guide readers through case-based examples to demonstrate how tool selection can affect data quality and interpretation and we provide critical analysis of the experimental tools that are currently available, focusing on their use in models of ischaemic heart injury and heart failure. The goal is to increase the use of relevant immunological tools and strategies among cardiovascular researchers to improve the precision, translatability and consistency of future studies of immune cells in cardiac disease.
Collapse
|
40
|
Wang Z, Li C, He X, Xu K, Xue Z, Wang T, Xu Z, Liu X. Platycodon grandiflorum root fermentation broth reduces inflammation in a mouse IBD model through the AMPK/NF-κB/NLRP3 pathway. Food Funct 2022; 13:3946-3956. [PMID: 35293398 DOI: 10.1039/d1fo03969e] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The effect of Platycodon grandiflorum (PG) on colitis and its underlying mechanism were rarely studied. In this study, Lactobacillus rhamnosus 217-1 was used to ferment PG roots, and the concentrations of platycodin-D, flavonoids, and polyphenols and the DPPH free radical scavenging rate were significantly increased. Treatment with a PG root fermentation broth (PGRFB) could reduce dextran sulfate sodium (DSS) induced ulcerative colitis (UC) in mice. Meanwhile, the PGRFB significantly reduced the content of inflammatory factors in mouse serum and the expression of inflammatory factor mRNA in the intestinal tract, regulated the polarization of M1/M2 macrophages, and increased the expression of tight junction protein mRNA in intestinal epithelial cells. In summary, it was proved that the PGRFB could inhibit the nuclear factor kappa B (NF-κB) signaling pathway and the expression of Nod-like receptor protein 3 (NLRP3) inflammasomes by activating AMP-activated protein kinase (AMPK) and lowering the release of pro-inflammatory cytokines.
Collapse
Affiliation(s)
- Zhe Wang
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Science, Jinan, 250353, P. R. China. .,Shandong Provincial Key Laboratory of Microbial Engineering, Department of Bioengineering, Qilu University of Technology, Shandong Academy of Science, Jinan, 250353, P. R. China
| | - Chunhai Li
- Department of Radiology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China
| | - Xi He
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Science, Jinan, 250353, P. R. China. .,Shandong Provincial Key Laboratory of Microbial Engineering, Department of Bioengineering, Qilu University of Technology, Shandong Academy of Science, Jinan, 250353, P. R. China
| | - Kang Xu
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Science, Jinan, 250353, P. R. China. .,Shandong Provincial Key Laboratory of Microbial Engineering, Department of Bioengineering, Qilu University of Technology, Shandong Academy of Science, Jinan, 250353, P. R. China
| | - Zhipeng Xue
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Science, Jinan, 250353, P. R. China. .,Shandong Provincial Key Laboratory of Microbial Engineering, Department of Bioengineering, Qilu University of Technology, Shandong Academy of Science, Jinan, 250353, P. R. China
| | - Ting Wang
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Science, Jinan, 250353, P. R. China. .,Shandong Provincial Key Laboratory of Microbial Engineering, Department of Bioengineering, Qilu University of Technology, Shandong Academy of Science, Jinan, 250353, P. R. China
| | - Zhenshang Xu
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Science, Jinan, 250353, P. R. China. .,Shandong Provincial Key Laboratory of Microbial Engineering, Department of Bioengineering, Qilu University of Technology, Shandong Academy of Science, Jinan, 250353, P. R. China
| | - Xinli Liu
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Science, Jinan, 250353, P. R. China. .,Shandong Provincial Key Laboratory of Microbial Engineering, Department of Bioengineering, Qilu University of Technology, Shandong Academy of Science, Jinan, 250353, P. R. China
| |
Collapse
|
41
|
Glutathione-dependent redox balance characterizes the distinct metabolic properties of follicular and marginal zone B cells. Nat Commun 2022; 13:1789. [PMID: 35379825 PMCID: PMC8980022 DOI: 10.1038/s41467-022-29426-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 03/11/2022] [Indexed: 11/13/2022] Open
Abstract
The metabolic principles underlying the differences between follicular and marginal zone B cells (FoB and MZB, respectively) are not well understood. Here we show, by studying mice with B cell-specific ablation of the catalytic subunit of glutamate cysteine ligase (Gclc), that glutathione synthesis affects homeostasis and differentiation of MZB to a larger extent than FoB, while glutathione-dependent redox control contributes to the metabolic dependencies of FoB. Specifically, Gclc ablation in FoB induces metabolic features of wild-type MZB such as increased ATP levels, glucose metabolism, mTOR activation, and protein synthesis. Furthermore, Gclc-deficient FoB have a block in the mitochondrial electron transport chain (ETC) due to diminished complex I and II activity and thereby accumulate the tricarboxylic acid cycle metabolite succinate. Finally, Gclc deficiency hampers FoB activation and antibody responses in vitro and in vivo, and induces susceptibility to viral infections. Our results thus suggest that Gclc is required to ensure the development of MZB, the mitochondrial ETC integrity in FoB, and the efficacy of antiviral humoral immunity. Follicular and marginal zone B (FoB and MZB, respectively) cells have divergent metabolic characteristics. Here the authors show that deficiency of glutamate cysteine ligase (Gclc), the enzyme for glutathione synthesis, differentially impacts FoB and MZB homeostasis, while specifically impeding FoB activation and downstream antiviral immunity.
Collapse
|
42
|
Abu-Dief AM, Alsehli M, Awaad A. A higher dose of PEGylated gold nanoparticles reduces the accelerated blood clearance phenomenon effect and induces spleen B lymphocytes in albino mice. Histochem Cell Biol 2022; 157:641-656. [PMID: 35157114 DOI: 10.1007/s00418-022-02086-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/03/2022] [Indexed: 11/30/2022]
Abstract
Polyethylene glycol (PEG) is a multifunctional polymer that has many uses in medical and biological applications. Recently, PEG has been mainly used in developing nanomaterial-based drug delivery systems (DDS). PEG is characterized by its high solubility, biological inertness, and ability to escape from immune cells (stealthiness) after systemic injection. The most challenging problem for PEGylated nanomaterials is their rapid elimination from the bloodstream after repeated doses of systemic injection, called accelerated blood clearance (ABC). Therefore, in this study, the effect of PEGylated nanomaterial dose concentration on ABC induction will be investigated using quantitative, histological, and immunohistochemical analyses. A higher dose concentration (2 mg/kg) of PEGylated gold nanoparticles (PEG-coated AuNPs) reduced the ABC phenomenon when intravenously injected into mice preinjected with the same dose. In contrast, a lower dose concentration (< 1 mg/kg) significantly induced the ABC phenomenon by the rapid elimination of the second dose of PEG-coated AuNPs from the bloodstream. To explain the relationship between the dose concentration (from PEG and AuNPs) and the induction of ABC, the biodistribution of PEG-coated AuNPs in liver and spleen [reticuloendothelial systems (RES)-rich organs] was investigated. The injected dose of PEG-coated AuNPs accumulated mainly in the hepatic Kupffer cells and hepatocytes. Similarly, spleen red pulp received a higher amount of the injected dose of PEG-coated AuNPs. However, the biodistriution profiles of PEG-coated AuNPs after the first and second dose for different dose concentrations varied in RES-rich organs. Additionally, the number of B lymphocytes, which have an important role in producing anti-PEG immunoglobulin (Ig)M, was affected by the repeated dose of PEG-coated AuNPs in the spleen. Therefore, for effective nanomaterial-based DDS development, dose optimization of PEG molecules that express PEGylated nanomaterials is important to reduce the ABC phenomenon effect. The ideal concentration of PEG molecules used to coat nanomaterials and the role of RES-rich organs must be determined to control the ABC phenomenon effect of PEGylated nanomaterials.
Collapse
Affiliation(s)
- Ahmed M Abu-Dief
- Department of Chemistry, College of Science, Taibah University, P.O. Box 344, Madinah, Saudi Arabia.,Department of Chemistry, Faculty of Science, Sohag University, Sohag, 82524, Egypt
| | - Mosa Alsehli
- Department of Chemistry, College of Science, Taibah University, P.O. Box 344, Madinah, Saudi Arabia
| | - Aziz Awaad
- Department of Zoology, Faculty of Science, Sohag University, Sohag, 52824, Egypt.
| |
Collapse
|
43
|
Maity S, Chakraborty A, Mahata SK, Roy S, Das AK, Sen M. Wnt5A Signaling Blocks Progression of Experimental Visceral Leishmaniasis. Front Immunol 2022; 13:818266. [PMID: 35197983 PMCID: PMC8859155 DOI: 10.3389/fimmu.2022.818266] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 01/14/2022] [Indexed: 11/13/2022] Open
Abstract
Visceral leishmaniasis, caused by L. donovani infection is fatal if left untreated. The intrinsic complexity of visceral leishmaniasis complicated further by the increasing emergence of drug resistant L. donovani strains warrants fresh investigations into host defense schemes that counter infections. Accordingly, in a mouse model of experimental visceral leishmaniasis we explored the utility of host Wnt5A in restraining L. donovani infection, using both antimony sensitive and antimony resistant L. donovani strains. We found that Wnt5A heterozygous (Wnt5A +/-) mice are more susceptible to L. donovani infection than their wild type (Wnt5A +/+) counterparts as depicted by the respective Leishman Donovan Units (LDU) enumerated from the liver and spleen harvested from infected mice. Higher LDU in Wnt5A +/- mice correlated with increased plasma gammaglobulin level, incidence of liver granuloma, and disorganization of splenic white pulp. Progression of infection in mice by both antimony sensitive and antimony resistant strains of L. donovani could be prevented by activation of Wnt5A signaling through intravenous administration of rWnt5A prior to L. donovani infection. Wnt5A mediated blockade of L. donovani infection correlated with the preservation of splenic macrophages and activated T cells, and a proinflammatory cytokine bias. Taken together our results indicate that while depletion of Wnt5A promotes susceptibility to visceral leishmaniasis, revamping Wnt5A signaling in the host is able to curb L. donovani infection irrespective of antimony sensitivity or resistance and mitigate the progression of disease.
Collapse
Affiliation(s)
- Shreyasi Maity
- Cancer Biology & Inflammatory Disorder, CSIR-Indian Institute of Chemical Biology, Kolkata, India
| | - Arijit Chakraborty
- Department of General Surgery, Massachusetts General Hospital, Boston, MA, United States
| | - Sushil Kumar Mahata
- Medicine, VA San Diego Healthcare System, University of California, San Diego, La Jolla, CA, United States
| | - Syamal Roy
- Cancer Biology & Inflammatory Disorder, CSIR-Indian Institute of Chemical Biology, Kolkata, India
| | - Anjan Kumar Das
- Department of Pathology Calcutta National Medical College & Hospital, Kolkata, India
| | - Malini Sen
- Cancer Biology & Inflammatory Disorder, CSIR-Indian Institute of Chemical Biology, Kolkata, India
| |
Collapse
|
44
|
Snarski P, Sukhanov S, Yoshida T, Higashi Y, Danchuk S, Chandrasekar B, Tian D, Rivera-Lopez V, Delafontaine P. Macrophage-Specific IGF-1 Overexpression Reduces CXCL12 Chemokine Levels and Suppresses Atherosclerotic Burden in Apoe-Deficient Mice. Arterioscler Thromb Vasc Biol 2022; 42:113-126. [PMID: 34852642 PMCID: PMC8792341 DOI: 10.1161/atvbaha.121.316090] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE IGF-1 (insulin-like growth factor 1) exerts pleiotropic effects including promotion of cellular growth, differentiation, survival, and anabolism. We have shown that systemic IGF-1 administration reduced atherosclerosis in Apoe-/- (apolipoprotein E deficient) mice, and this effect was associated with a reduction in lesional macrophages and a decreased number of foam cells in the plaque. Almost all cell types secrete IGF-1, but the effect of macrophage-derived IGF-1 on the pathogenesis of atherosclerosis is poorly understood. We hypothesized that macrophage-derived IGF-1 will reduce atherosclerosis. Approach and Results: We created macrophage-specific IGF-1 overexpressing mice on an Apoe-/- background. Macrophage-specific IGF-1 overexpression reduced plaque macrophages, foam cells, and atherosclerotic burden and promoted features of stable atherosclerotic plaque. Macrophage-specific IGF1 mice had a reduction in monocyte infiltration into plaque, decreased expression of CXCL12 (CXC chemokine ligand 12), and upregulation of ABCA1 (ATP-binding cassette transporter 1), a cholesterol efflux regulator, in atherosclerotic plaque and in peritoneal macrophages. IGF-1 prevented oxidized lipid-induced CXCL12 upregulation and foam cell formation in cultured THP-1 macrophages and increased lipid efflux. We also found an increase in cholesterol efflux in macrophage-specific IGF1-derived peritoneal macrophages. CONCLUSIONS Macrophage IGF-1 overexpression reduced atherosclerotic burden and increased features of plaque stability, likely via a reduction in CXCL12-mediated monocyte recruitment and an increase in ABCA1-dependent macrophage lipid efflux.
Collapse
Affiliation(s)
- Patricia Snarski
- Section of Cardiology, John W. Deming Department of Medicine, Tulane University School of Medicine, New Orleans, LA,Department of Physiology, Tulane University School of Medicine, New Orleans, LA
| | - Sergiy Sukhanov
- Section of Cardiology, John W. Deming Department of Medicine, Tulane University School of Medicine, New Orleans, LA,Department of Physiology, Tulane University School of Medicine, New Orleans, LA
| | - Tadashi Yoshida
- Section of Cardiology, John W. Deming Department of Medicine, Tulane University School of Medicine, New Orleans, LA,Department of Physiology, Tulane University School of Medicine, New Orleans, LA
| | - Yusuke Higashi
- Section of Cardiology, John W. Deming Department of Medicine, Tulane University School of Medicine, New Orleans, LA,Department of Physiology, Tulane University School of Medicine, New Orleans, LA
| | - Svitlana Danchuk
- Section of Cardiology, John W. Deming Department of Medicine, Tulane University School of Medicine, New Orleans, LA,Department of Physiology, Tulane University School of Medicine, New Orleans, LA
| | - Bysani Chandrasekar
- Harry S. Truman Memorial Veterans’ Hospital, Columbia, MO,Department of Medical Pharmacology and Physiology, University of Missouri, Columbia, MO
| | - Di Tian
- Department of Pathology, Tulane University School of Medicine, New Orleans, LA
| | | | - Patrick Delafontaine
- Section of Cardiology, John W. Deming Department of Medicine, Tulane University School of Medicine, New Orleans, LA,Department of Physiology, Tulane University School of Medicine, New Orleans, LA,Department of Pharmacology, Tulane University School of Medicine, New Orleans, LA
| |
Collapse
|
45
|
Aguirre JI, Castillo EJ, Kimmel DB. Biologic and pathologic aspects of osteocytes in the setting of medication-related osteonecrosis of the jaw (MRONJ). Bone 2021; 153:116168. [PMID: 34487892 PMCID: PMC8478908 DOI: 10.1016/j.bone.2021.116168] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 08/02/2021] [Accepted: 08/31/2021] [Indexed: 02/08/2023]
Abstract
Medication-related osteonecrosis of the jaw (MRONJ) is a potentially severe, debilitating condition affecting patients with cancer and patients with osteoporosis who have been treated with powerful antiresorptives (pARs) or angiogenesis inhibitors (AgIs). Oral risk factors associated with the development of MRONJ include tooth extraction and inflammatory dental disease (e.g., periodontitis, periapical infection). In bone tissues, osteocytes play a bidirectional role in which they not only act as the "receiver" of systemic signals from blood vessels, such as hormones and drugs, or local signals from the mineralized matrix as it is deformed, but they also play a critical role as "transmitter" of signals to the cells that execute bone modeling and remodeling (osteoclasts, osteoblasts and lining cells). When the survival capacity of osteocytes is overwhelmed, they can die. Osteocyte death has been associated with several pathological conditions. Whereas the causes and mechanisms of osteocyte death have been studied in conditions like osteonecrosis of the femoral head (ONFH), few studies of the causes and mechanisms of osteocyte death have been done in MRONJ. The three forms of cell death that affect most of the different cells in the body (apoptosis, autophagy, and necrosis) have been recognized in osteocytes. Notably, necroptosis, a form of regulated cell death with "a necrotic cell death phenotype," has also been identified as a form of cell death in osteocytes under certain pathologic conditions. Improving the understanding of osteocyte death in MRONJ may be critical for preventing disease and developing treatment approaches. In this review, we intend to provide insight into the biology of osteocytes, cell death, in general, and osteocyte death, in particular, and discuss hypothetical mechanisms involved in osteocyte death associated with MRONJ.
Collapse
Affiliation(s)
- J I Aguirre
- Department of Physiological Sciences, University of Florida (UF), Gainesville, FL, United States of America.
| | - E J Castillo
- Department of Physiological Sciences, University of Florida (UF), Gainesville, FL, United States of America.
| | - D B Kimmel
- Department of Physiological Sciences, University of Florida (UF), Gainesville, FL, United States of America
| |
Collapse
|
46
|
Carpentier KS, Sheridan RM, Lucas CJ, Davenport BJ, Li FS, Lucas ED, McCarthy MK, Reynoso GV, May NA, Tamburini BAJ, Hesselberth JR, Hickman HD, Morrison TE. MARCO + lymphatic endothelial cells sequester arthritogenic alphaviruses to limit viremia and viral dissemination. EMBO J 2021; 40:e108966. [PMID: 34618370 PMCID: PMC8591538 DOI: 10.15252/embj.2021108966] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Revised: 09/08/2021] [Accepted: 09/10/2021] [Indexed: 02/02/2023] Open
Abstract
Viremia in the vertebrate host is a major determinant of arboviral reservoir competency, transmission efficiency, and disease severity. However, immune mechanisms that control arboviral viremia are poorly defined. Here, we identify critical roles for the scavenger receptor MARCO in controlling viremia during arthritogenic alphavirus infections in mice. Following subcutaneous inoculation, arthritogenic alphavirus particles drain via the lymph and are rapidly captured by MARCO+ lymphatic endothelial cells (LECs) in the draining lymph node (dLN), limiting viral spread to the bloodstream. Upon reaching the bloodstream, alphavirus particles are cleared from the circulation by MARCO-expressing Kupffer cells in the liver, limiting viremia and further viral dissemination. MARCO-mediated accumulation of alphavirus particles in the draining lymph node and liver is an important host defense mechanism as viremia and viral tissue burdens are elevated in MARCO-/- mice and disease is more severe. In contrast to prior studies implicating a key role for lymph node macrophages in limiting viral dissemination, these findings exemplify a previously unrecognized arbovirus-scavenging role for lymphatic endothelial cells and improve our mechanistic understanding of viremia control during arthritogenic alphavirus infection.
Collapse
Affiliation(s)
- Kathryn S Carpentier
- Department of Immunology and MicrobiologyUniversity of Colorado School of MedicineAuroraCOUSA
| | - Ryan M Sheridan
- RNA Bioscience InitiativeUniversity of Colorado School of MedicineAuroraCOUSA
| | - Cormac J Lucas
- Department of Immunology and MicrobiologyUniversity of Colorado School of MedicineAuroraCOUSA
| | - Bennett J Davenport
- Department of Immunology and MicrobiologyUniversity of Colorado School of MedicineAuroraCOUSA
| | - Frances S Li
- Department of Immunology and MicrobiologyUniversity of Colorado School of MedicineAuroraCOUSA
| | - Erin D Lucas
- Department of Immunology and MicrobiologyUniversity of Colorado School of MedicineAuroraCOUSA
| | - Mary K McCarthy
- Department of Immunology and MicrobiologyUniversity of Colorado School of MedicineAuroraCOUSA
| | - Glennys V Reynoso
- Viral Immunity and Pathogenesis UnitLaboratory of Clinical Microbiology and ImmunologyNational Institutes of Allergy and Infectious DiseasesNIHBethesdaMDUSA
| | - Nicholas A May
- Department of Immunology and MicrobiologyUniversity of Colorado School of MedicineAuroraCOUSA
| | - Beth A J Tamburini
- Department of Immunology and MicrobiologyUniversity of Colorado School of MedicineAuroraCOUSA
- Division of Gastroenterology and HepatologyDepartment of MedicineUniversity of Colorado Anschutz Medical Campus School of MedicineAuroraCOUSA
| | - Jay R Hesselberth
- RNA Bioscience InitiativeUniversity of Colorado School of MedicineAuroraCOUSA
- Department of Biochemistry and Molecular GeneticsUniversity of Colorado School of MedicineAuroraCOUSA
| | - Heather D Hickman
- Viral Immunity and Pathogenesis UnitLaboratory of Clinical Microbiology and ImmunologyNational Institutes of Allergy and Infectious DiseasesNIHBethesdaMDUSA
| | - Thomas E Morrison
- Department of Immunology and MicrobiologyUniversity of Colorado School of MedicineAuroraCOUSA
| |
Collapse
|
47
|
Hoffman D, Tevet Y, Trzebanski S, Rosenberg G, Vainman L, Solomon A, Hen-Avivi S, Ben-Moshe NB, Avraham R. A non-classical monocyte-derived macrophage subset provides a splenic replication niche for intracellular Salmonella. Immunity 2021; 54:2712-2723.e6. [PMID: 34788598 PMCID: PMC8691386 DOI: 10.1016/j.immuni.2021.10.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 07/27/2021] [Accepted: 10/18/2021] [Indexed: 12/24/2022]
Abstract
Interactions between intracellular bacteria and mononuclear phagocytes give rise to diverse cellular phenotypes that may determine the outcome of infection. Recent advances in single-cell RNA sequencing (scRNA-seq) have identified multiple subsets within the mononuclear population, but implications to their function during infection are limited. Here, we surveyed the mononuclear niche of intracellular Salmonella Typhimurium (S.Tm) during early systemic infection in mice. We described eclipse-like growth kinetics in the spleen, with a first phase of bacterial control mediated by tissue-resident red-pulp macrophages. A second phase involved extensive bacterial replication within a macrophage population characterized by CD9 expression. We demonstrated that CD9+ macrophages induced pathways for detoxificating oxidized lipids, that may be utilized by intracellular S.Tm. We established that CD9+ macrophages originated from non-classical monocytes (NCM), and NCM-depleted mice were more resistant to S.Tm infection. Our study defines macrophage subset-specific host-pathogen interactions that determine early infection dynamics and infection outcome of the entire organism. At early stages, Salmonella kinetics follows an eclipse-like dynamics CD9 Macs are an intracellular replication niche for Salmonella during eclipse CD9 Macs derive from non-classical monocytes and induce pathways to detoxify oxLDL CD9 Macs depletion reduces Salmonella infection and prolongs mice survival
Collapse
Affiliation(s)
- Dotan Hoffman
- Department of Biological Regulation, Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Yaara Tevet
- Department of Biological Regulation, Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Sébastien Trzebanski
- Department of Immunology, Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Gili Rosenberg
- Department of Biological Regulation, Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Leia Vainman
- Department of Biological Regulation, Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Aryeh Solomon
- Department of Biological Regulation, Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Shelly Hen-Avivi
- Department of Biological Regulation, Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Noa Bossel Ben-Moshe
- Department of Biological Regulation, Weizmann Institute of Science, 7610001 Rehovot, Israel
| | - Roi Avraham
- Department of Biological Regulation, Weizmann Institute of Science, 7610001 Rehovot, Israel.
| |
Collapse
|
48
|
Deroost K, Alder C, Hosking C, McLaughlin S, Lin JW, Lewis MD, Saavedra-Torres Y, Addy JWG, Levy P, Giorgalli M, Langhorne J. Tissue macrophages and interferon-gamma signalling control blood-stage Plasmodium chabaudi infections derived from mosquito-transmitted parasites. CURRENT RESEARCH IN IMMUNOLOGY 2021; 2:104-119. [PMID: 34532703 PMCID: PMC8428512 DOI: 10.1016/j.crimmu.2021.07.002] [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: 06/14/2021] [Revised: 07/23/2021] [Accepted: 07/27/2021] [Indexed: 11/19/2022] Open
Abstract
Natural infection with Plasmodium parasites, the causative agents of malaria, occurs via mosquito vectors. However, most of our knowledge of the immune response to the blood stages of Plasmodium is from infections initiated by injection of serially blood-passaged infected red blood cells, resulting in an incomplete life cycle in the mammalian host. Vector transmission of the rodent malaria parasite, Plasmodium chabaudi chabaudi AS has been shown to give rise to a more attenuated blood-stage infection in C57Bl/6J mice, when compared to infections initiated with serially blood-passaged P. chabaudi-infected red blood cells. In mouse models, the host immune response induced by parasites derived from natural mosquito transmission is likely to more closely resemble the immune responses to Plasmodium infections in humans. It is therefore important to determine how the host response differs between the two types of infections. As the spleen is considered to be a major contributor to the protective host response to P. chabaudi, we carried out a comparative transcriptomic analysis of the splenic response to recently mosquito-transmitted and serially blood-passaged parasites in C57Bl/6J mice. The attenuated infection arising from recently mosquito-transmitted parasites is characterised by an earlier and stronger myeloid- and IFNγ-related response. Analyses of spleen lysates from the two infections similarly showed stronger or earlier inflammatory cytokine and chemokine production in the recently mosquito-transmitted blood-stage infections. Furthermore, tissue macrophages, including red pulp macrophages, and IFNγ-signalling in myeloid cells, are required for the early control of P. chabaudi recently mosquito-transmitted parasites, thus contributing to the attenuation of mosquito-transmitted infections. The molecules responsible for this early activation response to recently-transmitted blood-stage parasites in mice would be important to identify, as they may help to elucidate the nature of the initial interactions between blood-stage parasites and the host immune system in naturally transmitted malaria. Attenuation of recently transmitted malaria happens at blood stage of infection. Stronger or earlier inflammatory cytokine and chemokine production. Tissue macrophages, including red pulp macrophages, contribute to attenuation. IFNγ-signalling in myeloid cells is required for early control of P. chabaudi AS.
Collapse
|
49
|
Sikora KN, Castellanos-García LJ, Hardie JM, Liu Y, Farkas ME, Rotello VM, Vachet RW. Nanodelivery vehicles induce remote biochemical changes in vivo. NANOSCALE 2021; 13:12623-12633. [PMID: 34264256 PMCID: PMC8380036 DOI: 10.1039/d1nr02563e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Nanomaterial-based platforms are promising vehicles for the controlled delivery of therapeutics. For these systems to be both efficacious and safe, it is essential to understand where the carriers accumulate and to reveal the site-specific biochemical effects they produce in vivo. Here, a dual-mode mass spectrometry imaging (MSI) method is used to evaluate the distributions and biochemical effects of anti-TNF-α nanoparticle stabilized capsules (NPSCs) in mice. It is found that most of the anticipated biochemical changes occur in sub-organ regions that are separate from where the nanomaterials accumulate. In particular, TNF-α-specific lipid biomarker levels change in immune cell-rich regions of organs, while the NPSCs accumulate in spatially isolated filtration regions. Biochemical changes that are associated with the nanomaterials themselves are also observed, demonstrating the power of matrix-assisted laser desorption/ionization (MALDI) MSI to reveal markers indicating possible off-target effects of the delivery agent. This comprehensive assessment using MSI provides spatial context of nanomaterial distributions and efficacy that cannot be easily achieved with other imaging methods, demonstrating the power of MSI to evaluate both expected and unexpected outcomes associated with complex therapeutic delivery systems.
Collapse
Affiliation(s)
- Kristen N Sikora
- Department of Chemistry, University of Massachusetts Amherst, 240 Thatcher Way, Life Sciences Laboratory, Amherst, MA 01003, USA.
| | | | | | | | | | | | | |
Collapse
|
50
|
Werth K, Hub E, Gutjahr JC, Bosjnak B, Zheng X, Bubke A, Russo S, Rot A, Förster R. Expression of ACKR4 demarcates the "peri-marginal sinus," a specialized vascular compartment of the splenic red pulp. Cell Rep 2021; 36:109346. [PMID: 34260918 DOI: 10.1016/j.celrep.2021.109346] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 01/11/2021] [Accepted: 06/15/2021] [Indexed: 11/16/2022] Open
Abstract
The spleen comprises defined microanatomical compartments that uniquely contribute to its diverse host defense functions. Here, we identify a vascular compartment within the red pulp of the spleen delineated by expression of the atypical chemokine receptor 4 (ACKR4) in endothelial cells. ACKR4-positive vessels form a three-dimensional sinusoidal network that connects via shunts to the marginal sinus and tightly surrounds the outer perimeter of the marginal zone. Endothelial cells lining this vascular compartment express ACKR4 as part of a distinct gene expression profile. We show that T cells enter the spleen largely through this peri-marginal sinus and initially localize extravascularly around these vessels. In the absence of ACKR4, homing of T cells into the spleen and subsequent migration into T cell areas is impaired, and organization of the marginal zone is severely affected. Our data delineate the splenic peri-marginal sinus as a compartment that supports spleen homing of T cells.
Collapse
Affiliation(s)
- Kathrin Werth
- Institute of Immunology, Hannover Medical School, 30625 Hannover, Germany
| | - Elin Hub
- Centre for Microvascular Research, The William Harvey Research Institute, Queen Mary University London, EC1M 6BQ London, UK; Centre for Inflammation and Therapeutic Innovation, Queen Mary University London, EC1M 6BQ London, UK
| | - Julia Christine Gutjahr
- Centre for Microvascular Research, The William Harvey Research Institute, Queen Mary University London, EC1M 6BQ London, UK
| | - Berislav Bosjnak
- Institute of Immunology, Hannover Medical School, 30625 Hannover, Germany
| | - Xiang Zheng
- Institute of Immunology, Hannover Medical School, 30625 Hannover, Germany
| | - Anja Bubke
- Institute of Immunology, Hannover Medical School, 30625 Hannover, Germany
| | - Stefan Russo
- Centre for Microvascular Research, The William Harvey Research Institute, Queen Mary University London, EC1M 6BQ London, UK
| | - Antal Rot
- Centre for Microvascular Research, The William Harvey Research Institute, Queen Mary University London, EC1M 6BQ London, UK; Centre for Inflammation and Therapeutic Innovation, Queen Mary University London, EC1M 6BQ London, UK; Institute for Cardiovascular Prevention, Ludwig-Maximilians University, 80336 Munich, Germany.
| | - Reinhold Förster
- Institute of Immunology, Hannover Medical School, 30625 Hannover, Germany; Cluster of Excellence RESIST (EXC 2155), Hannover Medical School, 30625 Hannover, Germany.
| |
Collapse
|