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Ruths L, Huber-Lang M, Schulze-Tanzil G, Riegger J. Anaphylatoxins and their corresponding receptors as potential drivers in cartilage calcification during osteoarthritis progression. Osteoarthritis Cartilage 2024; 32:514-525. [PMID: 38242312 DOI: 10.1016/j.joca.2024.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 01/08/2024] [Accepted: 01/12/2024] [Indexed: 01/21/2024]
Abstract
OBJECTIVE The complement cascade as major fluid phase innate immune system is activated during progression of osteoarthritis (OA). Generated anaphylatoxins and the corresponding receptors C3aR and C5aR1 are associated with the calcification of blood vessels and involved in osteogenic differentiation. This study aims on elucidating whether complement activation products contribute to cartilage calcification of OA cartilage. METHOD Human articular chondrocytes were osteogenically differentiated in vitro in the presence or absence of C3a, C5a, and bone morphogenetic protein (BMP) 2. Furthermore, macroscopically intact (OARSI grade ≤ 1) and highly degenerated human cartilage (OARSI grade ≥ 3) was used for C3aR and C5aR1 histochemistry. Calcification of the cartilage was assessed by Alizarin Red S and von Kossa staining. RESULTS C3a and C5a amplified matrix mineralization during in vitro osteogenesis, while inhibition of the corresponding receptors impaired calcium deposition. Moreover, C3aR and C5aR1 expression was upregulated during osteogenic differentiation and also in degenerated cartilage. Additionally, anaphylatoxin receptor expression was positively associated with calcification of native cartilage tissue and calcium deposition during osteogenic differentiation. Finally, the pro-hypertrophic growth factor BMP2 induced the expression of C5aR1. CONCLUSIONS Our findings indicate that anaphylatoxins and their receptors play a decisive role in cartilage calcification processes during OA progression.
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Affiliation(s)
- Leonie Ruths
- Division for Biochemistry of Joint and Connective Tissue Diseases, University Hospital Ulm, Ulm, Germany
| | - Markus Huber-Lang
- Institute of Clinical and Experimental Trauma Immunology, University Hospital Ulm, Ulm, Germany
| | - Gundula Schulze-Tanzil
- Department of Anatomy and Cell Biology, Paracelsus Medical University, Nuremberg, Germany
| | - Jana Riegger
- Division for Biochemistry of Joint and Connective Tissue Diseases, University Hospital Ulm, Ulm, Germany
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2
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Guo J, Zhang QY, Xu L, Li M, Sun QY. Icariin ameliorates LPS-induced acute lung injury in mice via complement C5a-C5aR1 and TLR4 signaling pathways. Int Immunopharmacol 2024; 131:111802. [PMID: 38467082 DOI: 10.1016/j.intimp.2024.111802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Revised: 02/22/2024] [Accepted: 03/02/2024] [Indexed: 03/13/2024]
Abstract
Acute lung injury (ALI) is an acute respiratory-related progressive disorder, which lacks specific pharmacotherapy. Icariin (ICA) has been shown to be effective in treating ALI. However, the targets and pharmacological mechanisms underlying the effects of ICA in the treatment of ALI are relatively lacking. Based on network pharmacology and molecular docking analyses, the gene functions and potential target pathways of ICA in the treatment of ALI were determined. In addition, the underlying mechanisms of ICA were verified by immunohistochemistry, immunofluorescence, quantitative Real-time PCR, and Western blot in LPS-induced ALI mice. The biological processes targeted by ICA in the treatment of ALI included the pathological changes, inflammatory response, and cell signal transduction. Network pharmacology, molecular docking, and in vivo experimental results revealed that ICA inhibited the complement C5a-C5aR1 axis, TLR4 mediated NF-κB, MAPK, and JAK2-STAT3 signaling pathways related gene and protein expressions, and decreased inflammatory cytokine, chemokine, adhesion molecule expressions, and mitochondrial apoptosis in LPS-induced ALI.
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Affiliation(s)
- Jing Guo
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China; Natural Products Research Center of Guizhou Province, Guiyang 550014, China; School of Chinese Ethnic Medicine, Guizhou Minzu University, Guiyang 550025, China
| | - Qi-Yun Zhang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China; Natural Products Research Center of Guizhou Province, Guiyang 550014, China
| | - Lin Xu
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China; Natural Products Research Center of Guizhou Province, Guiyang 550014, China
| | - Min Li
- General Ward, Guizhou Provincial People's Hospital, Guiyang 550002, China.
| | - Qian-Yun Sun
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang 550014, China; Natural Products Research Center of Guizhou Province, Guiyang 550014, China.
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Ghosh M, Shadangi S, Rana S. Rational design of antibody-like peptides for targeting the human complement fragment protein C5a. Proteins 2024; 92:449-463. [PMID: 37933678 DOI: 10.1002/prot.26637] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 10/26/2023] [Accepted: 10/30/2023] [Indexed: 11/08/2023]
Abstract
Human complement fragment 5a (C5a) is one of the most potent glycoproteins generated downstream of C3a and C4a during late-stage activation of the complement signaling cascade. C5a recruits receptors like C5aR1 and C5aR2 and is established to play a critical role in complement-mediated inflammation. Thus, excessive C5a in the plasma due to aberrant activation of the complement contributes to the pathophysiology of several chronic inflammatory diseases. Therefore, restricting the excessive interaction of C5a with its receptors by neutralizing C5a has been one of the most effective therapeutic strategies for the management of inflammatory diseases. Indeed, antibodies targeting C5 (Eculizumab), the precursor of C5a, and C5a (Vilobelimab) have already been approved by the FDA. Still, small designer peptides that work like antibodies and can target and stop C5a from interacting with its receptors seem to be a possible therapeutic alternative to antibodies because they are smaller, cheaper to make, more specific to their target, and can get through membrane barriers. As a proof-of-principle, the current study describes the computational design and evaluation of a pair of peptides that are able to form stable high-affinity complexes with the epitope regions of C5a that are important for the recruitment of C5aR1 and C5aR2. The computational data further supports the potential of designer peptides for mimicking the function of antibodies targeting C5a. However, further experimental studies will be required to establish the structure-function relationship of the designer peptides and also to establish the hypothesis of antibody-like peptides targeting C5a.
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Affiliation(s)
- Manaswini Ghosh
- Chemical Biology Laboratory, School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Odisha, India
| | - Sucharita Shadangi
- Chemical Biology Laboratory, School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Odisha, India
| | - Soumendra Rana
- Chemical Biology Laboratory, School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Odisha, India
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Fernández FJ, Vega MC. Decoding anaphylatoxins: unveiling the molecular mechanisms of complement receptor activation and signaling. Trends Biochem Sci 2024; 49:280-282. [PMID: 38233283 DOI: 10.1016/j.tibs.2024.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 01/04/2024] [Accepted: 01/05/2024] [Indexed: 01/19/2024]
Abstract
Recent advances in cryo-electron microscopy (Cryo-EM) have revolutionized our understanding of the complement C5a/C3a receptors that are crucial in inflammation. A recent report by Yadav et al. has elucidated the activation, ligand binding, selectivity, and signaling bias of these receptors, thereby enhancing structure-guided drug discovery. This paves the way for more effective anti-inflammatory therapies that target these receptors with unprecedented precision.
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Affiliation(s)
- Francisco J Fernández
- Centro de Investigaciones Biológicas Margarita Salas, Consejo Superior de Investigaciones Científicas (CIB-CSIC), Ramiro de Maeztu 9, 28040 Madrid, Spain; Abvance Biotech SL, 28003 Madrid, Spain
| | - M Cristina Vega
- Centro de Investigaciones Biológicas Margarita Salas, Consejo Superior de Investigaciones Científicas (CIB-CSIC), Ramiro de Maeztu 9, 28040 Madrid, Spain.
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Okada A, Shimizu K, Kawashima A, Kayahara T, Itani M, Kurita H, Miyamoto S, Kataoka H, Aoki T. C5a-C5AR1 axis as a potential trigger of the rupture of intracranial aneurysms. Sci Rep 2024; 14:3105. [PMID: 38326494 PMCID: PMC10850553 DOI: 10.1038/s41598-024-53651-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 02/03/2024] [Indexed: 02/09/2024] Open
Abstract
Recent studies have indicated the involvement of neutrophil-mediated inflammatory responses in the process leading to intracranial aneurysm (IA) rupture. Receptors mediating neutrophil recruitment could thus be therapeutic targets of unruptured IAs. In this study, complement C5a receptor 1 (C5AR1) was picked up as a candidate that may cause neutrophil-dependent inflammation in IA lesions from comprehensive gene expression profile data acquired from rat and human samples. The induction of C5AR1 in IA lesions was confirmed by immunohistochemistry; the up-regulations of C5AR1/C5ar1 stemmed from infiltrated neutrophils, which physiologically express C5AR1/C5ar1, and adventitial fibroblasts that induce C5AR1/C5ar1 in human/rat IA lesions. In in vitro experiments using NIH/3T3, a mouse fibroblast-like cell line, induction of C5ar1 was demonstrated by starvation or pharmacological inhibition of mTOR signaling by Torin1. Immunohistochemistry and an experiment in a cell-free system using recombinant C5 protein and recombinant Plasmin indicated that the ligand of C5AR1, C5a, could be produced through the enzymatic digestion by Plasmin in IA lesions. In conclusion, we have identified a potential contribution of the C5a-C5AR1 axis to neutrophil infiltration as well as inflammatory responses in inflammatory cells and fibroblasts of IA lesions. This cascade may become a therapeutic target to prevent the rupture of IAs.
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Grants
- 21K16622 Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology of Japan
- 20K09367 Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology of Japan
- 20K09381 Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology of Japan
- 22H00584 Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology of Japan
- JP18gm0810006 Core Research for Evolutional Science and Technology (CREST) on Mechanobiology from the Japan Agency for Medical Research and Development (AMED)
- JP19gm0810006 Core Research for Evolutional Science and Technology (CREST) on Mechanobiology from the Japan Agency for Medical Research and Development (AMED)
- JP20gm0810006 Core Research for Evolutional Science and Technology (CREST) on Mechanobiology from the Japan Agency for Medical Research and Development (AMED)
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Affiliation(s)
- Akihiro Okada
- Department of Molecular Pharmacology, Research Institute, National Cerebral and Cardiovascular Center, Osaka, Japan
- Department of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
- Core Research for Evolutional Science and Technology from Japan Agency for Medical Research and Development, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Kampei Shimizu
- Department of Molecular Pharmacology, Research Institute, National Cerebral and Cardiovascular Center, Osaka, Japan
- Department of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
- Core Research for Evolutional Science and Technology from Japan Agency for Medical Research and Development, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Akitsugu Kawashima
- Department of Neurosurgery, Tokyo Women's Medical University Yachiyo Medical Center, Chiba, Japan
| | - Tomomichi Kayahara
- Department of Molecular Pharmacology, Research Institute, National Cerebral and Cardiovascular Center, Osaka, Japan
- Department of Cerebrovascular Surgery, Saitama Medical University International Medical Center, Saitama, Japan
| | - Masahiko Itani
- Department of Molecular Pharmacology, Research Institute, National Cerebral and Cardiovascular Center, Osaka, Japan
- Department of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
- Department of Pharmacology, The Jikei University School of Medicine, 3-25-8 Nishi-Shinbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Hiroki Kurita
- Department of Cerebrovascular Surgery, Saitama Medical University International Medical Center, Saitama, Japan
| | - Susumu Miyamoto
- Department of Neurosurgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Hiroharu Kataoka
- Department of Neurosurgery, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Tomohiro Aoki
- Department of Molecular Pharmacology, Research Institute, National Cerebral and Cardiovascular Center, Osaka, Japan.
- Core Research for Evolutional Science and Technology from Japan Agency for Medical Research and Development, National Cerebral and Cardiovascular Center, Osaka, Japan.
- Department of Pharmacology, The Jikei University School of Medicine, 3-25-8 Nishi-Shinbashi, Minato-ku, Tokyo, 105-8461, Japan.
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Li XX, Fung JN, Clark RJ, Lee JD, Woodruff TM. Cell-intrinsic C5a synergizes with Dectin-1 in macrophages to mediate fungal killing. Proc Natl Acad Sci U S A 2024; 121:e2314627121. [PMID: 38252818 PMCID: PMC10835034 DOI: 10.1073/pnas.2314627121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 12/20/2023] [Indexed: 01/24/2024] Open
Abstract
The complement factor C5a is a core effector product of complement activation. C5a, acting through its receptors C5aR1 and C5aR2, exerts pleiotropic immunomodulatory functions in myeloid cells, which is vital for host defense against pathogens. Pattern-recognition receptors (PRRs) are similarly expressed by immune cells as detectors of pathogen-associated molecular patterns. Although there is evidence of cross talk between complement and PRR signaling pathways, knowledge of the full potential for C5a-PRR interaction is limited. In this study, we comprehensively investigated how C5a signaling through C5a receptors can modulate diverse PRR-mediated cytokine responses in human primary monocyte-derived macrophages and observed a powerful, concentration-dependent bidirectional effect of C5a on PRR activities. Unexpectedly, C5a synergized with Dectin-1, Mincle, and STING in macrophages to a much greater extent than TLRs. Notably, we also identified that selective Dectin-1 activation using depleted zymosan triggered macrophages to generate cell-intrinsic C5a, which acted on intracellular and cell surface C5aR1, to help sustain mitochondrial ROS generation, up-regulate TNFα production, and enhance fungal killing. This study adds further evidence to the holistic functions of C5a as a central immunomodulator and important orchestrator of pathogen sensing and killing by phagocytes.
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Affiliation(s)
- Xaria X. Li
- School of Biomedical Sciences, Faculty of Medicine, The University of Queensland, St Lucia, QLD4072, Australia
| | - Jenny N. Fung
- School of Biomedical Sciences, Faculty of Medicine, The University of Queensland, St Lucia, QLD4072, Australia
| | - Richard J. Clark
- School of Biomedical Sciences, Faculty of Medicine, The University of Queensland, St Lucia, QLD4072, Australia
| | - John D. Lee
- School of Biomedical Sciences, Faculty of Medicine, The University of Queensland, St Lucia, QLD4072, Australia
| | - Trent M. Woodruff
- School of Biomedical Sciences, Faculty of Medicine, The University of Queensland, St Lucia, QLD4072, Australia
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7
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Deng S, Jiang Y, Luo L, Tang H, Hu X, Wu C, Tang J, Ge H, Gong X, Cai R, Wang G, Li X, Feng J. C5a enhances inflammation and chemotaxis of γδ T cells in malignant pleural effusion. Int Immunopharmacol 2024; 127:111332. [PMID: 38071913 DOI: 10.1016/j.intimp.2023.111332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 11/22/2023] [Accepted: 11/28/2023] [Indexed: 01/18/2024]
Abstract
BACKGROUND The inhibitory effect of γδT17 cells on the formation of murine malignant pleural effusions (MPE) has been established. However, there is limited understanding regarding the phenotypic characterization of γδ T cells in MPE patients and their recruitment to the pleural cavity. METHODS We quantified γδ T cell prevalence in pleural effusions and corresponding peripheral blood from malignant and benign patients using immunohistochemistry and flow cytometry. The expression of effector memory phenotype, stimulatory/inhibitory/chemokine receptors and cytokines on γδ T cells in MPE was analyzed using multicolor flow cytometry. The infiltration of γδ T cells in MPE was assessed through immunofluorescence, ELISA, flow cytometry and transwell migration assay. RESULTS We observed a significant infiltration of γδ T cells in MPE, surpassing the levels found in blood and benign pleural effusion. γδ T cells in MPE exhibited heightened expression of CD56 and an effector memory phenotype, while displaying lower levels of PD-1. Furthermore, γδ T cells in MPE showed higher levels of cytokines (IFN-γ, IL-17A and IL-22) and chemokine receptors (CCR2, CCR5 and CCR6). CCR2 expression was notably higher in the Vδ2 subtype compared to Vδ1 cells. Moreover, the complement C5a enhanced cytokine release by γδ T cells, upregulated CCR2 expression in Vδ2 subsets, and stimulated the production of chemokines (CCL2, CCL7 and CCL20) in MPE. In vitro utilizing CCR2 neutralising and C5aR antagonist significantly reduced the recruitment of γδ T cells. CONCLUSIONS γδ T cells infiltrate MPE by overexpressing CCR2 and exhibit hightened inflammation, which is further augmented by C5a.
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Affiliation(s)
- Shuanglinzi Deng
- Department of Respiratory Medicine, National Key Clinical Specialty, Branch of National Clinical Research Center for Respiratory Disease, Xiangya Hospital, Central South University, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yuanyuan Jiang
- Department of Clinical Laboratory, Xiangya Hospital, Central South University, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Lisha Luo
- Department of Respiratory Medicine, National Key Clinical Specialty, Branch of National Clinical Research Center for Respiratory Disease, Xiangya Hospital, Central South University, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Huan Tang
- Department of Respiratory Medicine, National Key Clinical Specialty, Branch of National Clinical Research Center for Respiratory Disease, Xiangya Hospital, Central South University, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xinyue Hu
- Department of Respiratory Medicine, National Key Clinical Specialty, Branch of National Clinical Research Center for Respiratory Disease, Xiangya Hospital, Central South University, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Chendong Wu
- Department of Respiratory Medicine, National Key Clinical Specialty, Branch of National Clinical Research Center for Respiratory Disease, Xiangya Hospital, Central South University, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jiale Tang
- Department of Respiratory Medicine, National Key Clinical Specialty, Branch of National Clinical Research Center for Respiratory Disease, Xiangya Hospital, Central South University, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Huan Ge
- Department of Respiratory Medicine, National Key Clinical Specialty, Branch of National Clinical Research Center for Respiratory Disease, Xiangya Hospital, Central South University, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xiaoxiao Gong
- Department of Respiratory Medicine, National Key Clinical Specialty, Branch of National Clinical Research Center for Respiratory Disease, Xiangya Hospital, Central South University, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Runjin Cai
- Department of Respiratory Medicine, National Key Clinical Specialty, Branch of National Clinical Research Center for Respiratory Disease, Xiangya Hospital, Central South University, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Guo Wang
- Department of Respiratory Medicine, National Key Clinical Specialty, Branch of National Clinical Research Center for Respiratory Disease, Xiangya Hospital, Central South University, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xiaozhao Li
- Department of Nephrology, Xiangya Hospital, Central South University, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China.
| | - Juntao Feng
- Department of Respiratory Medicine, National Key Clinical Specialty, Branch of National Clinical Research Center for Respiratory Disease, Xiangya Hospital, Central South University, Changsha, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China.
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8
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Bode M, Herrnstadt GR, Dreher L, Ehnert N, Kirkerup P, Lindenmeyer MT, Meyer-Schwesinger CF, Ehmke H, Köhl J, Huber TB, Krebs CF, Steinmetz OM, Wiech T, Wenzel UO. Deficiency of Complement C3a and C5a receptors Does Not Prevent Angiotensin II-Induced Hypertension and Hypertensive End-Organ Damage. Hypertension 2024; 81:138-150. [PMID: 37909169 DOI: 10.1161/hypertensionaha.123.21599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 10/12/2023] [Indexed: 11/02/2023]
Abstract
BACKGROUND Complement may drive the pathology of hypertension through effects on innate and adaptive immune responses. Recently an injurious role for the anaphylatoxin receptors C3aR (complement component 3a receptor) and C5aR1 (complement component 5a receptor) in the development of hypertension was shown through downregulation of Foxp3+ (forkhead box protein 3) regulatory T cells. Here, we deepen our understanding of the therapeutic potential of targeting both receptors in hypertension. METHODS Data from the European Renal cDNA Bank, single cell sequencing and immunohistochemistry were examined in hypertensive patients. The effect of C3aR or C3aR/C5aR1 double deficiency was assessed in two models of Ang II (angiotensin II)-induced hypertension in knockout mice. RESULTS We found increased expression of C3aR, C5aR1 and Foxp3 cells in kidney biopsies of patients with hypertensive nephropathy. Expression of both receptors was mainly found in myeloid cells. No differences in blood pressure, renal injury (albuminuria, glomerular filtration rate, glomerular and tubulointerstitial injury, inflammation) or cardiac injury (cardiac fibrosis, heart weight, gene expression) between control and mutant mice was discerned in C3aR-/- as well as C3aR/C5aR1-/- double knockout mice. The number of renal Tregs was not decreased in Ang II as well as in DOCA salt induced hypertension. CONCLUSIONS Hypertensive nephropathy in mice and men is characterized by an increase of renal regulatory T cells and enhanced expression of anaphylatoxin receptors. Our investigations do not corroborate a role for C3aR/C5aR1 axis in Ang II-induced hypertension hence challenging the concept of anaphylatoxin receptor targeting in the treatment of hypertensive disease.
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Affiliation(s)
- Marlies Bode
- III. Department of Medicine (M.B., G.R.H., L.D., N.E., P.K., M.T.L., T.B.H., C.F.K., O.M.S., U.O.W.), University Hospital Hamburg-Eppendorf
- Hamburg Center for Kidney Health (HCKH) (M.B., G.R.H., M.T.L., C.F.M.-S., T.B.H., C.F.K., O.M.S., T.W., U.O.W.)
| | - Georg R Herrnstadt
- III. Department of Medicine (M.B., G.R.H., L.D., N.E., P.K., M.T.L., T.B.H., C.F.K., O.M.S., U.O.W.), University Hospital Hamburg-Eppendorf
- Hamburg Center for Kidney Health (HCKH) (M.B., G.R.H., M.T.L., C.F.M.-S., T.B.H., C.F.K., O.M.S., T.W., U.O.W.)
| | - Leonie Dreher
- III. Department of Medicine (M.B., G.R.H., L.D., N.E., P.K., M.T.L., T.B.H., C.F.K., O.M.S., U.O.W.), University Hospital Hamburg-Eppendorf
| | - Nicolas Ehnert
- III. Department of Medicine (M.B., G.R.H., L.D., N.E., P.K., M.T.L., T.B.H., C.F.K., O.M.S., U.O.W.), University Hospital Hamburg-Eppendorf
| | - Pia Kirkerup
- III. Department of Medicine (M.B., G.R.H., L.D., N.E., P.K., M.T.L., T.B.H., C.F.K., O.M.S., U.O.W.), University Hospital Hamburg-Eppendorf
| | - Maja T Lindenmeyer
- III. Department of Medicine (M.B., G.R.H., L.D., N.E., P.K., M.T.L., T.B.H., C.F.K., O.M.S., U.O.W.), University Hospital Hamburg-Eppendorf
- Hamburg Center for Kidney Health (HCKH) (M.B., G.R.H., M.T.L., C.F.M.-S., T.B.H., C.F.K., O.M.S., T.W., U.O.W.)
| | - Catherine F Meyer-Schwesinger
- Department of Cellular and Integrative Physiology (C.M.-S., H.E.), University Hospital Hamburg-Eppendorf
- Hamburg Center for Kidney Health (HCKH) (M.B., G.R.H., M.T.L., C.F.M.-S., T.B.H., C.F.K., O.M.S., T.W., U.O.W.)
| | - Heimo Ehmke
- Department of Cellular and Integrative Physiology (C.M.-S., H.E.), University Hospital Hamburg-Eppendorf
| | - Jörg Köhl
- Institute for Systemic Inflammation Research, Lübeck, Germany (J.K.)
- Division of Immunobiology, Cincinnati Children's Hospital Medical Center, OH (J.K.)
| | - Tobias B Huber
- III. Department of Medicine (M.B., G.R.H., L.D., N.E., P.K., M.T.L., T.B.H., C.F.K., O.M.S., U.O.W.), University Hospital Hamburg-Eppendorf
- Hamburg Center for Kidney Health (HCKH) (M.B., G.R.H., M.T.L., C.F.M.-S., T.B.H., C.F.K., O.M.S., T.W., U.O.W.)
| | - Christian F Krebs
- III. Department of Medicine (M.B., G.R.H., L.D., N.E., P.K., M.T.L., T.B.H., C.F.K., O.M.S., U.O.W.), University Hospital Hamburg-Eppendorf
- Hamburg Center for Kidney Health (HCKH) (M.B., G.R.H., M.T.L., C.F.M.-S., T.B.H., C.F.K., O.M.S., T.W., U.O.W.)
| | - Oliver M Steinmetz
- III. Department of Medicine (M.B., G.R.H., L.D., N.E., P.K., M.T.L., T.B.H., C.F.K., O.M.S., U.O.W.), University Hospital Hamburg-Eppendorf
- Hamburg Center for Kidney Health (HCKH) (M.B., G.R.H., M.T.L., C.F.M.-S., T.B.H., C.F.K., O.M.S., T.W., U.O.W.)
| | - Thorsten Wiech
- Department of Pathology, Section of Nephropathology (T.W.), University Hospital Hamburg-Eppendorf
- Hamburg Center for Kidney Health (HCKH) (M.B., G.R.H., M.T.L., C.F.M.-S., T.B.H., C.F.K., O.M.S., T.W., U.O.W.)
| | - Ulrich O Wenzel
- III. Department of Medicine (M.B., G.R.H., L.D., N.E., P.K., M.T.L., T.B.H., C.F.K., O.M.S., U.O.W.), University Hospital Hamburg-Eppendorf
- Hamburg Center for Kidney Health (HCKH) (M.B., G.R.H., M.T.L., C.F.M.-S., T.B.H., C.F.K., O.M.S., T.W., U.O.W.)
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9
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Zhou S, Wang Z, Gao L, Chen M, Duan Y, Zhou P, Liu Z, Wu C, Zhang J, Zhu Q. C5a/C5aR1 axis as a key driver promotes epithelial-to-mesenchymal transition in airway epithelial cells in silica nanoparticles-induced pulmonary fibrosis. Int Immunopharmacol 2023; 125:111112. [PMID: 37948857 DOI: 10.1016/j.intimp.2023.111112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 10/12/2023] [Accepted: 10/19/2023] [Indexed: 11/12/2023]
Abstract
Previous studies have shown that silica nanoparticles (SiNPs) exposure can affect the respiratory, cardiovascular, reproductive and other systems, with the lung being the primary target organ for the direct effect, causing damage with a central feature of pulmonary inflammation and fibrosis. However, the underlying mechanisms of pulmonary fibrosis due to SiNPs are not fully understood. The aim of the study was to investigate the role of complement anaphylatoxin C5a in SiNPs-induced pulmonary fibrosis. A mouse model of SiNPs-induced pulmonary fibrosis was established, and pulmonary fibrosis-related indicators, epithelial-to-mesenchymal transition (EMT), C5a/C5aR1 and high mobility group protein B1 (HMGB1) proteins were measured. An in vitro study using the human lung epithelial cell line BEAS-2B investigated whether C5a leads to epithelial-to-mesenchymal trans-differentiation. In vivo studies revealed that SiNPs-induced pulmonary fibrosis mainly manifested as EMT trans-differentiation in airway epithelial cells, which subsequently led to excessive deposition of extracellular matrix (ECM). Furthermore, we found that C5a and C5aR1 proteins were also increased in SiNPs-induced pulmonary fibrosis tissue. In vitro studies also showed that C5a directly activated HMGB1/RAGE signaling and induced EMT in BEAS-2B cells. Finally, treatment of SiNPs-exposed mice with the C5aR1 inhibitor PMX205 effectively reduced C5aR1 levels and inhibited the activation of HMGB1/RAGE signaling and the expression of EMT-related proteins, culminating in a significant alleviation of pulmonary fibrosis. Taken together, our results suggest that C5a/C5aR1 is the main signaling pathway for SiNPs-induced pulmonary fibrosis, which induces EMT in airway epithelial cells via the HMGB1/RAGE axis.
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Affiliation(s)
- Sifan Zhou
- Department of Occupational Health and Environmental Health, School of Public Health, Anhui Medical University, Hefei, Anhui, China
| | - Zhoujian Wang
- Department of Occupational Health and Environmental Health, School of Public Health, Anhui Medical University, Hefei, Anhui, China
| | - Lei Gao
- Department of Occupational Health and Environmental Health, School of Public Health, Anhui Medical University, Hefei, Anhui, China
| | - Muyue Chen
- Department of Occupational Health and Environmental Health, School of Public Health, Anhui Medical University, Hefei, Anhui, China
| | - Yuansheng Duan
- Department of Occupational Health and Environmental Health, School of Public Health, Anhui Medical University, Hefei, Anhui, China
| | - Pengcheng Zhou
- Department of Occupational Health and Environmental Health, School of Public Health, Anhui Medical University, Hefei, Anhui, China
| | - Zhibing Liu
- Department of Dermatology, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China; Key Laboratory of Dermatology (Anhui Medical University), Ministry of Education, Hefei, Anhui, China
| | - Changhao Wu
- Department of Biochemistry and Physiology, Faculty of Health and Medical Sciences, University of Surrey, Guildford, UK
| | - Jiaxiang Zhang
- Department of Occupational Health and Environmental Health, School of Public Health, Anhui Medical University, Hefei, Anhui, China.
| | - Qixing Zhu
- Department of Dermatology, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China; Key Laboratory of Dermatology (Anhui Medical University), Ministry of Education, Hefei, Anhui, China.
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10
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Cyranka L, Mariegaard I, Skjødt MO, Bayarri-Olmos R, Mollnes TE, Garred P, Rosbjerg A. Functional Analysis of a Novel Complement C5a Receptor 1-Blocking Monoclonal Antibody. J Innate Immun 2023; 15:836-849. [PMID: 37952515 PMCID: PMC10691831 DOI: 10.1159/000535084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 10/31/2023] [Indexed: 11/14/2023] Open
Abstract
INTRODUCTION The complement system anaphylatoxin C5a is a critical player in inflammation. By binding to complement C5a receptor 1 (C5aR1/CD88), C5a regulates many cellular functions, mainly as a potent pro-inflammatory inducer. We describe the generation and selection of a potent antagonistic C5aR1 mouse monoclonal antibody (mAb). METHODS Initial C5aR1 hybridoma clone selection was performed with a cell-binding study in human whole blood. In-house C5aR1 mAb assessment for C5aR1 inhibition was done via the iLite® C5a assay. C5aR1 mAb specificity was investigated on C5aR1his- and C5aR2his-expressing Flp-In™-CHO cells. Physiological C5aR1 inhibition was assessed via a C5a-driven calcium flux assay and stimulation assay based on isolated polymorphonuclear leukocytes (PMNs) and a whole blood model stimulated with Escherichia coli. RESULTS The supernatant of hybridoma clones targeting the N-terminal section of C5aR1 displayed efficient binding to C5aR1 in whole blood, which was confirmed for purified mAbs. The C5aR1 mAb 18-41-6 was selected following the assay of in-house C5aR1 mAbs via the iLite® C5a assay. The mAb 18-41-6 was specific for C5aR1. Full-size and/or F(ab')2 preparations of mAb 18-41-6 were found to efficiently abrogate C5a-induced calcium flux in neutrophils and to significantly reduce the upregulation of the activation markers CD11b (neutrophils, monocytes) and CD66b (neutrophils). CONCLUSION Our results demonstrate that mAb 18-41-6 is a valuable tool for investigating the C5a-C5aR1 axis and a potential therapeutic candidate for inflammatory disease treatment.
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Affiliation(s)
- Leon Cyranka
- Department of Clinical Immunology, Laboratory of Molecular Medicine, Section 7631, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Ida Mariegaard
- Department of Clinical Immunology, Laboratory of Molecular Medicine, Section 7631, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Mikkel-Ole Skjødt
- Department of Clinical Immunology, Laboratory of Molecular Medicine, Section 7631, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
- Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Rafael Bayarri-Olmos
- Department of Clinical Immunology, Laboratory of Molecular Medicine, Section 7631, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Tom Eirik Mollnes
- Department of Immunology, Oslo University Hospital and University of Oslo, Oslo, Norway
- Research Laboratory, Nordland Hospital, Bodø, Norway
| | - Peter Garred
- Department of Clinical Immunology, Laboratory of Molecular Medicine, Section 7631, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Anne Rosbjerg
- Department of Clinical Immunology, Laboratory of Molecular Medicine, Section 7631, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
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11
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Kim JH, Irfan M, Hossain MA, Shin S, George A, Chung S. LPS-induced inflammation potentiates dental pulp stem cell odontogenic differentiation through C5aR and p38. Connect Tissue Res 2023; 64:505-515. [PMID: 37247252 PMCID: PMC10524681 DOI: 10.1080/03008207.2023.2218944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 04/24/2023] [Accepted: 05/23/2023] [Indexed: 05/31/2023]
Abstract
AIM Inflammation is a complex host response to harmful infection or injury, and it seems to play a crucial role in tissue regeneration both positively and negatively. We have previously demonstrated that the activation of the complement C5a pathway affects dentin-pulp regeneration. However, limited information is available to understand the role of the complement C5a system related to inflammation-mediated dentinogenesis. The aim of this study was to determine the role of complement C5a receptor (C5aR) in regulating lipopolysaccharide (LPS)-induced odontogenic differentiation of dental pulp stem cells (DPSCs). MATERIAL AND METHODS Human DPSCs were subjected to LPS-stimulated odontogenic differentiation in dentinogenic media treated with the C5aR agonist and antagonist. A putative downstream pathway of the C5aR was examined using a p38 mitogen-activated protein kinase (p38) inhibitor (SB203580). RESULTS Our data demonstrated that inflammation induced by the LPS treatment potentiated DPSC odontogenic differentiation and that this is C5aR dependent. C5aR signaling controlled the LPS-stimulated dentinogenesis by regulating the expression of odontogenic lineage markers like dentin sialophosphoprotein (DSPP) and dentin matrix protein 1 (DMP-1). Moreover, the LPS treatment increased the total p38, and the active form of p38 expression, and treatment with SB203580 abolished the LPS-induced DSPP and DMP-1 increase. CONCLUSIONS These data suggest a significant role of C5aR and its putative downstream molecule p38 in the LPS-induced odontogenic DPSCs differentiation. This study highlights the regulatory pathway of complement C5aR/p38 and a possible therapeutic approach for improving the efficiency of dentin regeneration during inflammation.
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Affiliation(s)
- Ji-Hyun Kim
- Department of Oral Biology, University of Illinois Chicago, Chicago, IL, USA
| | - Muhammad Irfan
- Department of Oral Biology, University of Illinois Chicago, Chicago, IL, USA
| | - Md Akil Hossain
- Department of Oral Biology, University of Illinois Chicago, Chicago, IL, USA
| | - Susie Shin
- Department of Oral Biology, University of Illinois Chicago, Chicago, IL, USA
| | - Anne George
- Department of Oral Biology, University of Illinois Chicago, Chicago, IL, USA
| | - Seung Chung
- Department of Oral Biology, University of Illinois Chicago, Chicago, IL, USA
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12
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Pimenta-Lopes C, Sánchez-de-Diego C, Deber A, Egea-Cortés A, Valer JA, Alcalá A, Méndez-Lucas A, Esteve-Codina A, Rosa JL, Ventura F. Inhibition of C5AR1 impairs osteoclast mobilization and prevents bone loss. Mol Ther 2023; 31:2507-2523. [PMID: 37143324 PMCID: PMC10422003 DOI: 10.1016/j.ymthe.2023.04.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 12/22/2022] [Accepted: 04/28/2023] [Indexed: 05/06/2023] Open
Abstract
Age-related and chemotherapy-induced bone loss depends on cellular senescence and the cell secretory phenotype. However, the factors secreted in the senescent microenvironment that contribute to bone loss remain elusive. Here, we report a central role for the inflammatory alternative complement system in skeletal bone loss. Through transcriptomic analysis of bone samples, we identified complement factor D, a rate-limiting factor of the alternative pathway of complement, which is among the most responsive factors to chemotherapy or estrogen deficiency. We show that osteoblasts and osteocytes are major inducers of complement activation, while monocytes and osteoclasts are their primary targets. Genetic deletion of C5ar1, the receptor of the anaphylatoxin C5a, or treatment with a C5AR1 inhibitor reduced monocyte chemotaxis and osteoclast differentiation. Moreover, genetic deficiency or inhibition of C5AR1 partially prevented bone loss and osteoclastogenesis upon chemotherapy or ovariectomy. Altogether, these lines of evidence support the idea that inhibition of alternative complement pathways may have some therapeutic benefit in osteopenic disorders.
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Affiliation(s)
- Carolina Pimenta-Lopes
- Departament de Ciències Fisiològiques, Universitat de Barcelona, IDIBELL, 08907 L'Hospitalet de Llobregat, Spain
| | - Cristina Sánchez-de-Diego
- Departament de Ciències Fisiològiques, Universitat de Barcelona, IDIBELL, 08907 L'Hospitalet de Llobregat, Spain
| | - Alexandre Deber
- Departament de Ciències Fisiològiques, Universitat de Barcelona, IDIBELL, 08907 L'Hospitalet de Llobregat, Spain
| | - Andrea Egea-Cortés
- Departament de Ciències Fisiològiques, Universitat de Barcelona, IDIBELL, 08907 L'Hospitalet de Llobregat, Spain
| | - José Antonio Valer
- Departament de Ciències Fisiològiques, Universitat de Barcelona, IDIBELL, 08907 L'Hospitalet de Llobregat, Spain
| | - Albert Alcalá
- Departament de Ciències Fisiològiques, Universitat de Barcelona, IDIBELL, 08907 L'Hospitalet de Llobregat, Spain
| | - Andrés Méndez-Lucas
- Departament de Ciències Fisiològiques, Universitat de Barcelona, IDIBELL, 08907 L'Hospitalet de Llobregat, Spain
| | - Anna Esteve-Codina
- CNAG-CRG, Centre for Genomic Regulation, Barcelona Institute of Science & Technology, 08028 Barcelona, Spain; Universitat Pompeu Fabra, 08003 Barcelona, Spain
| | - Jose Luis Rosa
- Departament de Ciències Fisiològiques, Universitat de Barcelona, IDIBELL, 08907 L'Hospitalet de Llobregat, Spain
| | - Francesc Ventura
- Departament de Ciències Fisiològiques, Universitat de Barcelona, IDIBELL, 08907 L'Hospitalet de Llobregat, Spain.
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13
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Liu X, Wang W, Tan S, Liu H, Li Z, Wang N, Ma J, Han S, Wu Z, Shi K, Sha Z. C5a drives the inflammatory response with bacterial dose effect by binding to C5aR1 in zebrafish infected with Aeromonas hydrophila. Fish Shellfish Immunol 2023; 139:108873. [PMID: 37271327 DOI: 10.1016/j.fsi.2023.108873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Revised: 06/01/2023] [Accepted: 06/01/2023] [Indexed: 06/06/2023]
Abstract
The complement system is essential to host defense, but its excessive activation caused by severe pathogen invasion is a driving force in adverse inflammatory. The binding of complement component 5a (C5a) and complement component 5a receptor 1 (C5aR1) is the key to trigger complement-mediated inflammatory response in mammals. However, the role of C5a-C5aR1 axis in fish immune response remains obscure. In this study, the role of C5a-C5aR1 axis of zebrafish (Danio rerio) after serious infection with Aeromonas hydrophila was investigated. C5a and C5aR1 of zebrafish were cloned, with CDS sequences of 228 and 1041 bp, respectively, and they were widely expressed in various tissues with the highest expression in the liver and spleen, respectively. The survival of zebrafish was closely correlated to the dose of A. hydrophila. The cytokine storm occurred at high concentrations of A. hydrophila infection. At 24 h post infection (hpi), the expression of C5a and C5aR1 in the spleen increased 26.8-fold and 9.9-fold in treatment group 1 (TG1, 3.0 × 107 CFU/mL) (P < 0.01), and 4.7-fold and 3.4-fold in treatment group 2 (TG2, 1.0 × 107 CFU/mL) (P < 0.05), respectively. Correspondingly, proinflammatory cytokines interleukin-1β (IL-1β), interleukin-8 (IL-8), and interleukin-17 (IL-17) were positively correlated to C5a and C5aR1 at mRNA and protein expression levels. The expression of IL-1β was significantly increased in the spleen at 6 hpi, with a 599.2-fold and 203.2-fold upregulation in TG1 and TG2 (P < 0.001), respectively. Moreover, after inhibition of C5a-C5aR1 binding treated with C5aR1 antagonist (W-54011), zebrafish showed lower expression of C5a, C5aR1, and cytokines, less intestinal damage, and significantly enhancement of survival (P < 0.05) after A. hydrophila challenge. This study revealed that the inflammatory effect of C5a was achieved by binding to C5aR1 in zebrafish, providing novel insights into using C5a-C5aR1 axis as an effective target to reduce bacterial inflammation and disease in fish.
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Affiliation(s)
- Xinbao Liu
- Institute of Aquatic Biotechnology, College of Life Sciences, Qingdao University, Qingdao, 266071, China
| | - Wenwen Wang
- Institute of Aquatic Biotechnology, College of Life Sciences, Qingdao University, Qingdao, 266071, China
| | - Suxu Tan
- Institute of Aquatic Biotechnology, College of Life Sciences, Qingdao University, Qingdao, 266071, China
| | - Hongning Liu
- Institute of Aquatic Biotechnology, College of Life Sciences, Qingdao University, Qingdao, 266071, China
| | - Zhujun Li
- Institute of Aquatic Biotechnology, College of Life Sciences, Qingdao University, Qingdao, 266071, China
| | - Ningning Wang
- Institute of Aquatic Biotechnology, College of Life Sciences, Qingdao University, Qingdao, 266071, China; College of Basic Medicine, Qingdao University, Qingdao, 266071, China
| | - Jie Ma
- Institute of Aquatic Biotechnology, College of Life Sciences, Qingdao University, Qingdao, 266071, China
| | - Sen Han
- Institute of Aquatic Biotechnology, College of Life Sciences, Qingdao University, Qingdao, 266071, China
| | - Zhendong Wu
- Institute of Aquatic Biotechnology, College of Life Sciences, Qingdao University, Qingdao, 266071, China
| | - Kunpeng Shi
- Institute of Aquatic Biotechnology, College of Life Sciences, Qingdao University, Qingdao, 266071, China
| | - Zhenxia Sha
- Institute of Aquatic Biotechnology, College of Life Sciences, Qingdao University, Qingdao, 266071, China.
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14
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Wu KC, Condon ND, Hill TA, Reid RC, Fairlie DP, Lim J. Ras-Related Protein Rab5a Regulates Complement C5a Receptor Trafficking, Chemotaxis, and Chemokine Secretion in Human Macrophages. J Innate Immun 2023; 15:468-484. [PMID: 36882040 PMCID: PMC10105068 DOI: 10.1159/000530012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 03/01/2023] [Indexed: 03/09/2023] Open
Abstract
Complement activation and Rab GTPase trafficking are commonly observed in inflammatory responses. Recruitment of innate immune cells to sites of infection or injury and secretion of inflammatory chemokines are promoted by complement component 5a (C5a) that activates the cell surface protein C5a receptor1 (C5aR1). Persistent activation can lead to a myriad of inflammatory and autoimmune diseases. Here, we demonstrate that the mechanism of C5a induced chemotaxis of human monocyte-derived macrophages (HMDMs) and their secretion of inflammatory chemokines are controlled by Rab5a. We find that C5a activation of the G protein coupled receptor C5aR1 expressed on the surface of HMDMs, recruits β-arrestin2 via Rab5a trafficking, then activates downstream phosphatidylinositol 3-kinase (PI3K)/Akt signaling that culminates in chemotaxis and secretion of pro-inflammatory chemokines from HMDMs. High-resolution lattice light-sheet microscopy on live cells showed that C5a activates C5aR1-GFP internalization and colocalization with Rab5a-tdTomato but not with dominant negative mutant Rab5a-S34N-tdTomato in HEK293 cells. We found that Rab5a is significantly upregulated in differentiated HMDMs and internalization of C5aR1 is dependent on Rab5a. Interestingly, while knockdown of Rab5a inhibited C5aR1-mediated Akt phosphorylation, it did not affect C5aR1-mediated ERK1/2 phosphorylation or intracellular calcium mobilization in HMDMs. Functional analysis using transwell migration and µ-slide chemotaxis assays indicated that Rab5a regulates C5a-induced chemotaxis of HMDMs. Further, C5aR1 was found to mediate interaction of Rab5a with β-arrestin2 but not with G proteins in HMDMs. Furthermore, C5a-induced secretion of pro-inflammatory chemokines (CCL2, CCL3) from HMDMs was attenuated by Rab5a or β-arrestin2 knockdown or by pharmacological inhibition with a C5aR1 antagonist or a PI3K inhibitor. These findings reveal a C5a-C5aR1-β-arrestin2-Rab5a-PI3K signaling pathway that regulates chemotaxis and pro-inflammatory chemokine secretion in HMDMs and suggests new ways of selectively modulating C5a-induced inflammatory outputs.
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Affiliation(s)
- Kai-Chen Wu
- Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Nicholas D. Condon
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Timothy A. Hill
- Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Robert C. Reid
- Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - David P. Fairlie
- Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Junxian Lim
- Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
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15
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Hu J, Tan X, Wei X, Hu W, Gao L, Cao X, Yang H, Jiang Z, Li N, Teng L, Liu M. Determination of the optimal concentration and duration of C5aR antagonist application in an inflammatory model of human dental pulp cells. FEBS Open Bio 2023; 13:570-581. [PMID: 36732060 PMCID: PMC9989919 DOI: 10.1002/2211-5463.13571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 10/17/2022] [Accepted: 02/01/2023] [Indexed: 02/04/2023] Open
Abstract
Deep tooth decay approaching the pulp may develop into pulpitis; to prevent this, pulp cells need to balance the rapid immune response to avoid rapid swelling of the pulp. Current treatment of deep decay that approaches the pulp involves the application of drugs that induce low-level inflammation in the dental pulp to promote its repair, but this treatment is sometimes insufficient. However, the unsuccessful treatment often resulted in pulpitis. The C5a-C5aR is the initial stage of the immune cascade response. Blocking the binding of C5a-C5aR can slow the immune response in the narrow pulp cavity, so that dental pulp cells have enough time to proliferate, migrate, and differentiate. In this study, we compared lipoteichoic acid (LTA) and lipopolysaccharides (LPS) at different concentrations and time points and used the C5aR antagonist W54011 to block the C5a-C5aR axis. The blocking effect was detected by analyzing the expression of C5a, C5aR, interleukin (IL)-6, and Toll-like receptors 2 and 4 (TLR-2, 4). Next, we determined the optimal concentration and duration of LTA and LPS treatment in combination with W54011. Based on our results, we selected 1.0 μg·mL-1 LPS treatment for 48 h to generate an inflammatory model of human dental pulp cells. We then regrouped the cells and conducted expression analyses to monitor the expression of C5a, C5aR, IL-6, and TLR-4 at the protein and mRNA levels. LPS stimulation for 48 h and treatment with W54011 for 48 h effectively inhibited inflammation and did not affect C5a expression. This study provides a basis for follow-up studies of W54011 in dental pulp cells.
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Affiliation(s)
- Junlong Hu
- Department of Craniomaxillofacial Surgery, Plastic Surgery HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Xiaohan Tan
- Department of ProsthodonticsThe second Affiliated Hospital of Harbin Medical UniversityChina
| | | | - Weiping Hu
- Department of ProsthodonticsThe second Affiliated Hospital of Harbin Medical UniversityChina
| | - Li Gao
- Department of Oral and Maxillofacial SurgeryThe second Affiliated Hospital of Harbin Medical UniversityChina
| | - Xiaofang Cao
- Department of EndodonticsThe second Affiliated Hospital of Harbin Medical UniversityChina
| | - Huiying Yang
- Department of StomatologyQiqihar Eye & ENT HospitalChina
| | - Zhuling Jiang
- Department of Oral ImplantologyThe second Affiliated Hospital of Harbin Medical UniversityChina
| | - Ning Li
- Department of CardiologyThe second Affiliated Hospital of Harbin Medical UniversityChina
| | - Li Teng
- Department of Craniomaxillofacial Surgery, Plastic Surgery HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina
| | - Mingyue Liu
- Department of ProsthodonticsThe second Affiliated Hospital of Harbin Medical University & The Key Laboratory of Myocardial Ischemia Ministry of EducationChina
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16
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Abstract
ABSTRACT This report deals with the advances made in the areas of complement and its role in sepsis, both in mice and in humans. The study relates to work over the past 25 years (late 1990s to October 2022). During this period, there has been very rapid progress in understanding the activation pathways of complement and the activation products of complement, especially the anaphylatoxin C5a and its receptors, C5aR1 and C5aR2. Much has also been learned about these pathways of activation that trigger activation of the innate immune system and the array of strong proinflammatory cytokines that can cause cell and organ dysfunction, as well as complement products that cause immunosuppression. The work in septic humans and mice, along with patients who develop lung dysfunction caused by COVID-19, has taught us that there are many strategies for treatment of humans who are septic or develop COVID-19-related lung dysfunction. To date, treatments in humans with these disorders suggest that we are in the midst of a new and exciting area related to the complement system.
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Affiliation(s)
- Firas S. Zetoune
- University of Michigan Medical School, Department of Pathology, Ann Arbor, MI 48109
| | - Peter A. Ward
- University of Michigan Medical School, Department of Pathology, Ann Arbor, MI 48109
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17
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Trivedi VS, Magnusen AF, Rani R, Marsili L, Slavotinek AM, Prows DR, Hopkin RJ, McKay MA, Pandey MK. Targeting the Complement-Sphingolipid System in COVID-19 and Gaucher Diseases: Evidence for a New Treatment Strategy. Int J Mol Sci 2022; 23:ijms232214340. [PMID: 36430817 PMCID: PMC9695449 DOI: 10.3390/ijms232214340] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 11/08/2022] [Accepted: 11/10/2022] [Indexed: 11/22/2022] Open
Abstract
Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2)-induced disease (COVID-19) and Gaucher disease (GD) exhibit upregulation of complement 5a (C5a) and its C5aR1 receptor, and excess synthesis of glycosphingolipids that lead to increased infiltration and activation of innate and adaptive immune cells, resulting in massive generation of pro-inflammatory cytokines, chemokines and growth factors. This C5a-C5aR1-glycosphingolipid pathway- induced pro-inflammatory environment causes the tissue damage in COVID-19 and GD. Strikingly, pharmaceutically targeting the C5a-C5aR1 axis or the glycosphingolipid synthesis pathway led to a reduction in glycosphingolipid synthesis and innate and adaptive immune inflammation, and protection from the tissue destruction in both COVID-19 and GD. These results reveal a common involvement of the complement and glycosphingolipid systems driving immune inflammation and tissue damage in COVID-19 and GD, respectively. It is therefore expected that combined targeting of the complement and sphingolipid pathways could ameliorate the tissue destruction, organ failure, and death in patients at high-risk of developing severe cases of COVID-19.
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Affiliation(s)
- Vyoma Snehal Trivedi
- Cincinnati Children’s Hospital Medical Center, Division of Human Genetics, 3333 Burnet Avenue, Building R1, MLC 7016, Cincinnati, OH 45229, USA
| | - Albert Frank Magnusen
- Cincinnati Children’s Hospital Medical Center, Division of Human Genetics, 3333 Burnet Avenue, Building R1, MLC 7016, Cincinnati, OH 45229, USA
| | - Reena Rani
- Cincinnati Children’s Hospital Medical Center, Division of Human Genetics, 3333 Burnet Avenue, Building R1, MLC 7016, Cincinnati, OH 45229, USA
| | - Luca Marsili
- Department of Neurology, James J. and Joan A. Gardner Center for Parkinson’s Disease and Movement Disorders, University of Cincinnati, 3113 Bellevue Ave, Cincinnati, OH 45219, USA
| | - Anne Michele Slavotinek
- Cincinnati Children’s Hospital Medical Center, Division of Human Genetics, 3333 Burnet Avenue, Building R1, MLC 7016, Cincinnati, OH 45229, USA
- Department of Pediatrics, College of Medicine, University of Cincinnati, 3230 Eden Ave, Cincinnati, OH 45267, USA
| | - Daniel Ray Prows
- Cincinnati Children’s Hospital Medical Center, Division of Human Genetics, 3333 Burnet Avenue, Building R1, MLC 7016, Cincinnati, OH 45229, USA
- Department of Pediatrics, College of Medicine, University of Cincinnati, 3230 Eden Ave, Cincinnati, OH 45267, USA
| | - Robert James Hopkin
- Cincinnati Children’s Hospital Medical Center, Division of Human Genetics, 3333 Burnet Avenue, Building R1, MLC 7016, Cincinnati, OH 45229, USA
- Department of Pediatrics, College of Medicine, University of Cincinnati, 3230 Eden Ave, Cincinnati, OH 45267, USA
| | - Mary Ashley McKay
- Cincinnati Children’s Hospital Medical Center, Division of Human Genetics, 3333 Burnet Avenue, Building R1, MLC 7016, Cincinnati, OH 45229, USA
| | - Manoj Kumar Pandey
- Cincinnati Children’s Hospital Medical Center, Division of Human Genetics, 3333 Burnet Avenue, Building R1, MLC 7016, Cincinnati, OH 45229, USA
- Department of Pediatrics, College of Medicine, University of Cincinnati, 3230 Eden Ave, Cincinnati, OH 45267, USA
- Correspondence:
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18
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Roewe J, Walachowski S, Sharma A, Berthiaume KA, Reinhardt C, Bosmann M. Bacterial polyphosphates induce CXCL4 and synergize with complement anaphylatoxin C5a in lung injury. Front Immunol 2022; 13:980733. [PMID: 36405694 PMCID: PMC9669059 DOI: 10.3389/fimmu.2022.980733] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 10/18/2022] [Indexed: 08/01/2023] Open
Abstract
Polyphosphates are linear polymers of inorganic phosphates that exist in all living cells and serve pleiotropic functions. Bacteria produce long-chain polyphosphates, which can interfere with host defense to infection. In contrast, short-chain polyphosphates are released from platelet dense granules and bind to the chemokine CXCL4. Here, we report that long-chain polyphosphates induced the release of CXCL4 from mouse bone marrow-derived macrophages and peritoneal macrophages in a dose-/time-dependent fashion resulting from an induction of CXCL4 mRNA. This polyphosphate effect was lost after pre-incubation with recombinant exopolyphosphatase (PPX) Fc fusion protein, demonstrating the potency of long chains over monophosphates and ambient cations. In detail, polyphosphate chains >70 inorganic phosphate residues were required to reliably induce CXCL4. Polyphosphates acted independently of the purinergic P2Y1 receptor and the MyD88/TRIF adaptors of Toll-like receptors. On the other hand, polyphosphates augmented LPS/MyD88-induced CXCL4 release, which was explained by intracellular signaling convergence on PI3K/Akt. Polyphosphates induced Akt phosphorylation at threonine-308. Pharmacologic blockade of PI3K (wortmannin, LY294002) antagonized polyphosphate-induced CXCL4 release from macrophages. Intratracheal polyphosphate administration to C57BL/6J mice caused histologic signs of lung injury, disruption of the endothelial-epithelial barrier, influx of Ly6G+ polymorphonuclear neutrophils, depletion of CD11c+SiglecF+ alveolar macrophages, and release of CXCL4. Long-chain polyphosphates synergized with the complement anaphylatoxin, C5a, which was partly explained by upregulation of C5aR1 on myeloid cells. C5aR1-/- mice were protected from polyphosphate-induced lung injury. C5a generation occurred in the lungs and bronchoalveolar lavage fluid (BALF) of polyphosphate-treated C57BL/6J mice. In conclusion, we demonstrate that polyphosphates govern immunomodulation in macrophages and promote acute lung injury.
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Affiliation(s)
- Julian Roewe
- Center for Thrombosis and Hemostasis, University Medical Center Mainz, Mainz, Germany
| | - Sarah Walachowski
- Pulmonary Center, Department of Medicine, Boston University School of Medicine, Boston, MA, United States
| | - Arjun Sharma
- Center for Thrombosis and Hemostasis, University Medical Center Mainz, Mainz, Germany
- Pulmonary Center, Department of Medicine, Boston University School of Medicine, Boston, MA, United States
| | - Kayleigh A. Berthiaume
- Pulmonary Center, Department of Medicine, Boston University School of Medicine, Boston, MA, United States
| | - Christoph Reinhardt
- Center for Thrombosis and Hemostasis, University Medical Center Mainz, Mainz, Germany
| | - Markus Bosmann
- Center for Thrombosis and Hemostasis, University Medical Center Mainz, Mainz, Germany
- Pulmonary Center, Department of Medicine, Boston University School of Medicine, Boston, MA, United States
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19
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Matsubara D, Yanase Y, Ishii K, Takahagi S, Tanaka A, Ozawa K, Hide M. Basophils activation of patients with chronic spontaneous urticaria in response to C5a despite failure to respond to IgE-mediated stimuli. Front Immunol 2022; 13:994823. [PMID: 36248902 PMCID: PMC9559203 DOI: 10.3389/fimmu.2022.994823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 08/31/2022] [Indexed: 11/18/2022] Open
Abstract
Urticaria is characterized by the occurrence of wheals and flares in response to vasoactive mediators, such as histamine. Various studies have suggested the involvement of basophils in the pathogenesis of chronic spontaneous urticaria (CSU). However, histamine release from peripheral basophils in response to stimuli acting on the high affinity IgE receptor (FcϵRI) is impaired in many patients with CSU (non/low responders). We previously demonstrated that tissue factor (TF)s expressed on vascular endothelial cells in response to a combination of various stimuli, such as that of histamine and lipopolysaccharide (LPS), activates the extrinsic coagulation pathway and produces anaphylatoxin, complement 5a (C5a), which then activates basophils and mast cells via the C5a receptor (C5aR). We have revealed that histamine release was induced in response to C5a and formyl-l-methionyl-l-leucyl-l-phenylalanine (fMLP), regardless of the response to anti-IgE antibody, the reduced numbers of basophils and severity of urticaria. Moreover, we found that spontaneous release of histamine ex vivo from basophils of patients with CSU is higher than that from healthy individuals. These results suggest that basophils and the complement system, which could be activated by coagulation factors, may play a critical role in the pathogenesis of CSU, especially in cases refractory to treatment involving the IgE/FcϵRI pathway.
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Affiliation(s)
- Daiki Matsubara
- Department of Dermatology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Yuhki Yanase
- Department of Pharmacotherapy, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
- *Correspondence: Michihiro Hide, ; Yuhki Yanase,
| | - Kaori Ishii
- Department of Dermatology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Shunsuke Takahagi
- Department of Dermatology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Akio Tanaka
- Department of Dermatology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Koichiro Ozawa
- Department of Pharmacotherapy, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Michihiro Hide
- Department of Dermatology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
- Department of Dermatology, Hiroshima City Hiroshima Citizens Hospital, Hiroshima, Japan
- *Correspondence: Michihiro Hide, ; Yuhki Yanase,
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20
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Sun Q, Liu Y, Teng X, Luan P, Teng X, Yin X. Immunosuppression participated in complement activation-mediated inflammatory injury caused by 4-octylphenol via TLR7/IκBα/NF-κB pathway in common carp (Cyprinus carpio) gills. Aquat Toxicol 2022; 249:106211. [PMID: 35667248 DOI: 10.1016/j.aquatox.2022.106211] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 05/28/2022] [Accepted: 05/30/2022] [Indexed: 06/15/2023]
Abstract
4-octylphenol (4-OP), a toxic estrogenic environmental pollutant, can threaten aquatic animal and human health. However, toxic effect of 4-OP on fish has not been reported. To investigate molecular mechanism of gill poisoning caused by 4-OP exposure, a carp 4-OP poisoning model was established, and then blood and gills were collected on day 60. The results demonstrated that gill was a target organ attacked by 4-OP, and exposure to 4-OP caused carp gill inflammatory injury. There were 1605 differentially expressed genes (DEGs, including 898 up-regulated DEGs and 707 down-regulated DEGs). KEGG and GO were used to further analyze obtained 1605 DEGs, indicating that complement activation, immune response, and inflammatory response participated in the mechanism of 4-OP-caused carp gill inflammatory injury. Our data at transcription level further revealed that 4-OP caused complement activation through triggering complement component 3a/complement component 3a receptor (C3a/C3aR) axis and complement component 5a/complement component 5a receptor 1 (C5a/C5aR1) axis, induced immunosuppression through the imbalances of T helper (Th) 1/Th2 cells and regulatory T (Treg)/Th17 cells, as well as caused inflammatory injury via toll like receptor 7/inhibitor kappa B alpha/nuclear factor-kappa B (TLR7/IκBα/NF-κB) pathway. Taken together, immunosuppression participated in complement activation-mediated inflammatory damage in carp gills after 4-OP treatment. The findings of this study will provide pioneering information and theoretical support for the mechanism of 4-OP poisoning, and will provide reference for the assessment of estrogenic environmental pollution risk.
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Affiliation(s)
- Qi Sun
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
| | - Yuhao Liu
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
| | - Xiaojie Teng
- Grassland Station in Heilongjiang Province, Harbin 150067, China
| | - Peng Luan
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China
| | - Xiaohua Teng
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China.
| | - Xiujie Yin
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China.
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21
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Apostolidis SA, Sarkar A, Giannini HM, Goel RR, Mathew D, Suzuki A, Baxter AE, Greenplate AR, Alanio C, Abdel-Hakeem M, Oldridge DA, Giles JR, Wu JE, Chen Z, Huang YJ, Belman J, Pattekar A, Manne S, Kuthuru O, Dougherty J, Weiderhold B, Weisman AR, Ittner CAG, Gouma S, Dunbar D, Frank I, Huang AC, Vella LA, Reilly JP, Hensley SE, Rauova L, Zhao L, Meyer NJ, Poncz M, Abrams CS, Wherry EJ. Signaling Through FcγRIIA and the C5a-C5aR Pathway Mediate Platelet Hyperactivation in COVID-19. Front Immunol 2022; 13:834988. [PMID: 35309299 PMCID: PMC8928747 DOI: 10.3389/fimmu.2022.834988] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 02/07/2022] [Indexed: 12/12/2022] Open
Abstract
Patients with COVID-19 present with a wide variety of clinical manifestations. Thromboembolic events constitute a significant cause of morbidity and mortality in patients infected with SARS-CoV-2. Severe COVID-19 has been associated with hyperinflammation and pre-existing cardiovascular disease. Platelets are important mediators and sensors of inflammation and are directly affected by cardiovascular stressors. In this report, we found that platelets from severely ill, hospitalized COVID-19 patients exhibited higher basal levels of activation measured by P-selectin surface expression and had poor functional reserve upon in vitro stimulation. To investigate this question in more detail, we developed an assay to assess the capacity of plasma from COVID-19 patients to activate platelets from healthy donors. Platelet activation was a common feature of plasma from COVID-19 patients and correlated with key measures of clinical outcome including kidney and liver injury, and APACHEIII scores. Further, we identified ferritin as a pivotal clinical marker associated with platelet hyperactivation. The COVID-19 plasma-mediated effect on control platelets was highest for patients that subsequently developed inpatient thrombotic events. Proteomic analysis of plasma from COVID-19 patients identified key mediators of inflammation and cardiovascular disease that positively correlated with in vitro platelet activation. Mechanistically, blocking the signaling of the FcγRIIa-Syk and C5a-C5aR pathways on platelets, using antibody-mediated neutralization, IgG depletion or the Syk inhibitor fostamatinib, reversed this hyperactivity driven by COVID-19 plasma and prevented platelet aggregation in endothelial microfluidic chamber conditions. These data identified these potentially actionable pathways as central for platelet activation and/or vascular complications and clinical outcomes in COVID-19 patients. In conclusion, we reveal a key role of platelet-mediated immunothrombosis in COVID-19 and identify distinct, clinically relevant, targetable signaling pathways that mediate this effect.
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Affiliation(s)
- Sokratis A. Apostolidis
- Institute for Immunology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
- Division of Rheumatology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
| | - Amrita Sarkar
- Division of Hematology, The Children’s Hospital of Philadelphia, Philadelphia, PA, United States
| | - Heather M. Giannini
- Division of Pulmonary, Allergy and Critical Care Medicine, Center for Translational Lung Biology, Lung Biology Institute, Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
| | - Rishi R. Goel
- Institute for Immunology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
| | - Divij Mathew
- Institute for Immunology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
| | - Aae Suzuki
- Department of Medicine, University of Pennsylvania School of Medicine, Philadelphia, PA, United States
| | - Amy E. Baxter
- Institute for Immunology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
- Department of Systems Pharmacology and Translational Therapeutics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
| | - Allison R. Greenplate
- Institute for Immunology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
- Immune Health™, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
| | - Cécile Alanio
- Institute for Immunology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
- Department of Systems Pharmacology and Translational Therapeutics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
- Parker Institute for Cancer Immunotherapy, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
| | - Mohamed Abdel-Hakeem
- Institute for Immunology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
- Department of Systems Pharmacology and Translational Therapeutics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
| | - Derek A. Oldridge
- Institute for Immunology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
- Department of Pathology and Laboratory Medicine, Children’s Hospital of Philadelphia, Philadelphia, PA, United States
- Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
| | - Josephine R. Giles
- Institute for Immunology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
- Department of Systems Pharmacology and Translational Therapeutics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
- Parker Institute for Cancer Immunotherapy, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
| | - Jennifer E. Wu
- Institute for Immunology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
- Department of Systems Pharmacology and Translational Therapeutics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
- Parker Institute for Cancer Immunotherapy, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
| | - Zeyu Chen
- Institute for Immunology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
- Department of Systems Pharmacology and Translational Therapeutics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
| | - Yinghui Jane Huang
- Institute for Immunology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
- Department of Systems Pharmacology and Translational Therapeutics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
| | - Jonathan Belman
- Institute for Immunology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
- Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
| | - Ajinkya Pattekar
- Institute for Immunology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
- Immune Health™, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
| | - Sasikanth Manne
- Institute for Immunology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
- Department of Systems Pharmacology and Translational Therapeutics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
| | - Oliva Kuthuru
- Institute for Immunology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
- Department of Systems Pharmacology and Translational Therapeutics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
| | - Jeanette Dougherty
- Institute for Immunology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
- Department of Systems Pharmacology and Translational Therapeutics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
| | - Brittany Weiderhold
- Department of Medicine, University of Pennsylvania School of Medicine, Philadelphia, PA, United States
| | - Ariel R. Weisman
- Division of Pulmonary, Allergy and Critical Care Medicine, Center for Translational Lung Biology, Lung Biology Institute, Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
| | - Caroline A. G. Ittner
- Division of Pulmonary, Allergy and Critical Care Medicine, Center for Translational Lung Biology, Lung Biology Institute, Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
| | - Sigrid Gouma
- Department of Microbiology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
| | - Debora Dunbar
- Division of Infectious Diseases, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Ian Frank
- Division of Infectious Diseases, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Alexander C. Huang
- Institute for Immunology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
- Parker Institute for Cancer Immunotherapy, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
- Division of Hematology and Oncology, Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
| | - Laura A. Vella
- Institute for Immunology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
- Division of Infectious Diseases, Department of Pediatrics, Children’s Hospital of Philadelphia, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
| | - John P. Reilly
- Division of Pulmonary, Allergy and Critical Care Medicine, Center for Translational Lung Biology, Lung Biology Institute, Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
| | - Scott E. Hensley
- Institute for Immunology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
- Department of Microbiology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
| | - Lubica Rauova
- Division of Hematology, The Children’s Hospital of Philadelphia, Philadelphia, PA, United States
- Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Liang Zhao
- Department of Medicine, University of Pennsylvania School of Medicine, Philadelphia, PA, United States
| | - Nuala J. Meyer
- Division of Pulmonary, Allergy and Critical Care Medicine, Center for Translational Lung Biology, Lung Biology Institute, Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
| | - Mortimer Poncz
- Division of Hematology, The Children’s Hospital of Philadelphia, Philadelphia, PA, United States
- Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Charles S. Abrams
- Department of Medicine, University of Pennsylvania School of Medicine, Philadelphia, PA, United States
| | - E. John Wherry
- Institute for Immunology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
- Department of Systems Pharmacology and Translational Therapeutics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
- Immune Health™, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
- Parker Institute for Cancer Immunotherapy, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, United States
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22
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Ramanjaneya M, Diboun I, Rizwana N, Dajani Y, Ahmed L, Butler AE, Almarzooqi TA, Shahata M, Al Bader MK, Elgassim E, Burjaq H, Atkin SL, Abou-Samra AB, Elrayess MA. Elevated Adipsin and Reduced C5a Levels in the Maternal Serum and Follicular Fluid During Implantation Are Associated With Successful Pregnancy in Obese Women. Front Endocrinol (Lausanne) 2022; 13:918320. [PMID: 35909516 PMCID: PMC9326155 DOI: 10.3389/fendo.2022.918320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 05/23/2022] [Indexed: 11/13/2022] Open
Abstract
INTRODUCTION Complement factors mediate the recruitment and activation of immune cells and are associated with metabolic changes during pregnancy. The aim of this study was to determine whether complement factors in the maternal serum and follicular fluid (FF) are associated with in vitro fertilization (IVF) outcomes in overweight/obese women. METHODS Forty overweight/obese (BMI = 30.8 ± 5.2 kg/m2) female patients, 33.6 ± 6.3 years old, undergoing IVF treatment for unexplained infertility were recruited. Baseline demographic information, including biochemical hormonal, metabolic, and inflammatory markers, and pregnancy outcome, was collected. Levels of 14 complement markers (C2, C4b, C5, C5a, C9, adipsin, mannose-binding lectin, C1q, C3, C3b/iC3b, C4, factor B, factor H, and properdin) were assessed in the serum and FF and compared to IVF outcome, inflammatory, and metabolic markers using multivariate and univariate models. RESULTS Out of 40 IVF cycles, 14 (35%) resulted in pregnancy. Compared to women with failed pregnancies, women with successful pregnancies had higher levels of adipsin in the serum and FF (p = 0.01) but lower C5a levels (p = 0.05). Serum adipsin levels were positively correlated with circulating levels of vitamin D (R = 0.5, p = 0.02), glucagon (R = 0.4, p = 0.03), leptin (R = 0.4, p = 0.01), resistin (R = 0.4, p = 0.02), and visfatin (R = 0.4, p = 0.02), but negatively correlated with total protein (R = -0.5, p = 0.03). Higher numbers of top-quality embryos were associated with increased levels of C3, properdin, C1q, factors H and B, C4, and adipsin, but with reduced C2 and C5a levels (p ≤ 0.01). CONCLUSIONS Higher adipsin and lower C5a levels in the maternal serum during implantation are potential markers of successful outcome in obese women undergoing IVF-assisted pregnancies.
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Affiliation(s)
- Manjunath Ramanjaneya
- Qatar Metabolic Institute, Hamad Medical Corporation, Doha, Qatar
- Translational Research Institute, Hamad Medical Corporation, Doha, Qatar
| | | | - Najeha Rizwana
- Biomedical Research Center (BRC), Qatar University, Doha, Qatar
| | | | | | | | - Thoraya Ali Almarzooqi
- Obstetrics and Gynecology Department, Women’s Hospital, Hamad Medical Corporation, Doha, Qatar
| | - Mohammed Shahata
- Obstetrics and Gynecology Department, Women’s Hospital, Hamad Medical Corporation, Doha, Qatar
| | - Moza Khalaf Al Bader
- Obstetrics and Gynecology Department, Women’s Hospital, Hamad Medical Corporation, Doha, Qatar
| | | | - Hasan Burjaq
- Obstetrics and Gynecology Department, Women’s Hospital, Hamad Medical Corporation, Doha, Qatar
| | | | | | - Mohamed A. Elrayess
- Biomedical Research Center (BRC), Qatar University, Doha, Qatar
- QU Health, Qatar University, Doha, Qatar
- *Correspondence: Mohamed A. Elrayess,
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23
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Li XX, Gorman DM, Lee JD, Clark RJ, Woodruff TM. Unexpected Off-Target Activities for Recombinant C5a in Human Macrophages. J Immunol 2022; 208:133-142. [PMID: 34853076 DOI: 10.4049/jimmunol.2100444] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 10/29/2021] [Indexed: 06/13/2023]
Abstract
The anaphylatoxin C5a is core effector of complement activation. C5a exerts potent proinflammatory and immunomodulatory actions through interacting with its C5a receptors, C5aR1 and C5aR2, modulating multiple signaling and functional activities of immune cells. Native C5a contains a large N-linked glycosylation site at Asn64, which accounts for up to 25% of its m.w. To date, the vast majority of published studies examining C5a are performed using Escherichia coli-generated recombinant C5a, which is readily available from numerous commercial suppliers, but lacks this glycosylation moiety. However, a plasma-purified "native" form of C5a is also commercially available. The different size and glycosylation of these two C5a versions could have functional implications. Therefore, the current study aimed to compare recombinant human C5a to purified plasma-derived human C5a in driving the signaling and functional activities of human primary macrophages. We found that both versions of C5a displayed similar potencies at triggering C5aR1- and C5aR2-mediated cell signaling, but elicited distinct functional responses in primary human monocyte-derived macrophages. Multiple commercial sources of recombinant C5a, but not the plasma-purified or a synthetic C5a version, induced human monocyte-derived macrophages to produce IL-6 and IL-10 in a C5a receptor-independent manner, which was driven through Syk and NF-κB signaling and apparently not due to endotoxin contamination. Our results, therefore, offer caution against the sole use of recombinant human C5a, particularly in functional/cytokine assays conducted in human primary immune cells, and suggest studies using recombinant human C5a should be paired with C5aR1 inhibitors or purified/synthetic human C5a to confirm relevant findings.
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Affiliation(s)
- Xaria X Li
- School of Biomedical Sciences, The University of Queensland, St. Lucia, Queensland, Australia
| | - Declan M Gorman
- School of Biomedical Sciences, The University of Queensland, St. Lucia, Queensland, Australia
| | - John D Lee
- School of Biomedical Sciences, The University of Queensland, St. Lucia, Queensland, Australia
| | - Richard J Clark
- School of Biomedical Sciences, The University of Queensland, St. Lucia, Queensland, Australia
| | - Trent M Woodruff
- School of Biomedical Sciences, The University of Queensland, St. Lucia, Queensland, Australia
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24
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Liu M, Luo X, Xu Q, Yu H, Gao L, Zhou R, Wang T. Adipsin of the Alternative Complement Pathway Is a Potential Predictor for Preeclampsia in Early Pregnancy. Front Immunol 2021; 12:702385. [PMID: 34671343 PMCID: PMC8521101 DOI: 10.3389/fimmu.2021.702385] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 09/15/2021] [Indexed: 01/05/2023] Open
Abstract
Objective The concentrations of complement proteins (adipsin, C3a, and C5a) and soluble endoglin (sENG) in the plasma were measured in this study, and their value as early-pregnancy predictors and potential diagnostic marker of preeclampsia was assessed, respectively. Experimental Design Plasma samples were obtained from healthy and preeclampsia pregnant women before delivery for a cross-sectional study. Plasma samples were collected from healthy and preeclampsia pregnant women throughout pregnancy and postpartum for a follow-up study. Enzyme-linked immunosorbent assays were used to detect plasma levels of several complement proteins (adipsin, C3a, and C5a) and sENG. Results The plasma levels of adipsin, C5a, and sENG were significantly increased before delivery in pregnant women with preeclampsia. During pregnancy, the plasma adipsin, C5a, and sENG levels were increased from the third trimester in healthy pregnant women; plasma adipsin levels remained stable after delivery, while C3a levels increased in the second trimester and remained stable afterward. Furthermore, levels of adipsin, C5a, and sENG were higher in preeclampsia patients at different stages of pregnancy; the C3a level presents a similar change and no difference was found in the third trimester. In the first trimester, receiver-operating curve (ROC) curve analysis showed that adipsin (AUC, 0.83 ± 0.06, P=0.001) and sENG (AUC, 0.74 ± 0.09, P=0.021) presented high value as predictors of early pregnancy. Conclusions Adipsin is likely a novel plasma biomarker to monitor the increased risk of preeclampsia in early pregnancy. Moreover, the increased plasma levels of adipsin, C5a, and sENG before delivery may be associated with preeclampsia.
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Affiliation(s)
- Min Liu
- Department of Obstetrics and Gynecology, Center for Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Xiaolei Luo
- Center for Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Qin Xu
- Department of Obstetrics and Gynecology, Center for Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Hongbiao Yu
- Department of Obstetrics and Gynecology, Center for Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Linbo Gao
- Department of Obstetrics and Gynecology, Center for Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Rong Zhou
- Department of Obstetrics and Gynecology, Center for Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Tao Wang
- Center for Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, China
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25
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Monnet C, Jacque E, de Romeuf C, Fontayne A, Abache T, Fournier N, Dupont G, Derache D, Engrand A, Bauduin A, Terrier A, Seifert A, Beghin C, Longue A, Masiello N, Danino L, Nogre M, Raia A, Dhainaut F, Fauconnier L, Togbe D, Reitinger C, Nimmerjahn F, Stevens W, Chtourou S, Mondon P. The Dual Targeting of FcRn and FcγRs via Monomeric Fc Fragments Results in Strong Inhibition of IgG-Dependent Autoimmune Pathologies. Front Immunol 2021; 12:728322. [PMID: 34512662 PMCID: PMC8427755 DOI: 10.3389/fimmu.2021.728322] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 08/09/2021] [Indexed: 12/12/2022] Open
Abstract
Novel molecules that directly target the neonatal Fc receptor (FcRn) and/or Fc gamma receptors (FcγRs) are emerging as promising treatments for immunoglobulin G (IgG)-dependent autoimmune pathologies. Mutated Fc regions and monoclonal antibodies that target FcRn are currently in clinical development and hold promise for reducing the levels of circulating IgG. Additionally, engineered structures containing multimeric Fc regions allow the dual targeting of FcRn and FcγRs; however, their tolerance needs to first be validated in phase I clinical studies. Here, for the first time, we have developed a modified monomeric recombinant Fc optimized for binding to all FcRns and FcγRs without the drawback of possible tolerance associated with FcγR cross-linking. A rational approach using Fc engineering allowed the selection of LFBD192, an Fc with a combination of six mutations that exhibits improved binding to human FcRn and FcγR as well as mouse FcRn and FcγRIV. The potency of LFBD192 was compared with that of intravenous immunoglobulin (IVIg), an FcRn blocker (Fc-MST-HN), and a trimeric Fc that blocks FcRn and/or immune complex-mediated cell activation through FcγR without triggering an immune reaction in several in vitro tests and validated in three mouse models of autoimmune disease.
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MESH Headings
- Animals
- Antirheumatic Agents/metabolism
- Antirheumatic Agents/pharmacology
- Arthritis, Experimental/genetics
- Arthritis, Experimental/immunology
- Arthritis, Experimental/metabolism
- Arthritis, Experimental/prevention & control
- Autoimmunity/drug effects
- Binding, Competitive
- Complement C5a/metabolism
- Female
- Histocompatibility Antigens Class I/genetics
- Histocompatibility Antigens Class I/immunology
- Histocompatibility Antigens Class I/metabolism
- Humans
- Immunoglobulin Fc Fragments/genetics
- Immunoglobulin Fc Fragments/immunology
- Immunoglobulin Fc Fragments/metabolism
- Immunoglobulin Fc Fragments/pharmacology
- Interleukin-2/metabolism
- Jurkat Cells
- Kinetics
- Mice, Inbred C57BL
- Mice, Transgenic
- Mutation
- Phagocytosis/drug effects
- Platelet Aggregation/drug effects
- Protein Binding
- Protein Engineering
- Receptors, Fc/antagonists & inhibitors
- Receptors, Fc/genetics
- Receptors, Fc/immunology
- Receptors, Fc/metabolism
- Receptors, IgG/antagonists & inhibitors
- Receptors, IgG/genetics
- Receptors, IgG/immunology
- Receptors, IgG/metabolism
- Secretory Pathway
- Signal Transduction
- THP-1 Cells
- Mice
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Affiliation(s)
- Céline Monnet
- LFB Biotechnologies, Innovation Department, Les Ulis, France
| | - Emilie Jacque
- LFB Biotechnologies, Innovation Department, Les Ulis, France
| | | | | | - Toufik Abache
- LFB Biotechnologies, Innovation Department, Les Ulis, France
| | | | - Gilles Dupont
- LFB Biotechnologies, Innovation Department, Les Ulis, France
| | | | - Anais Engrand
- LFB Biotechnologies, Innovation Department, Les Ulis, France
| | - Aurélie Bauduin
- LFB Biotechnologies, Innovation Department, Les Ulis, France
| | - Aurélie Terrier
- LFB Biotechnologies, Innovation Department, Les Ulis, France
| | | | - Cécile Beghin
- LFB Biotechnologies, Innovation Department, Les Ulis, France
| | - Alain Longue
- LFB Biotechnologies, Innovation Department, Les Ulis, France
| | | | - Laetitia Danino
- LFB Biotechnologies, Innovation Department, Les Ulis, France
| | - Michel Nogre
- LFB Biotechnologies, Innovation Department, Les Ulis, France
| | - Anais Raia
- LFB Biotechnologies, Innovation Department, Les Ulis, France
| | | | | | | | - Carmen Reitinger
- Division of Genetics, Department of Biology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | - Falk Nimmerjahn
- Division of Genetics, Department of Biology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany
| | - Wil Stevens
- LFB Biotechnologies, Innovation Department, Les Ulis, France
| | - Sami Chtourou
- LFB Biotechnologies, Innovation Department, Les Ulis, France
| | - Philippe Mondon
- LFB Biotechnologies, Innovation Department, Les Ulis, France
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26
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Silva de França F, Villas-Boas IM, Cogliati B, Woodruff TM, Reis EDS, Lambris JD, Tambourgi DV. C5a-C5aR1 Axis Activation Drives Envenomation Immunopathology by the Snake Naja annulifera. Front Immunol 2021; 12:652242. [PMID: 33936074 PMCID: PMC8082402 DOI: 10.3389/fimmu.2021.652242] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 03/22/2021] [Indexed: 12/03/2022] Open
Abstract
Systemic complement activation drives a plethora of pathological conditions, but its role in snake envenoming remains obscure. Here, we explored complement's contribution to the physiopathogenesis of Naja annulifera envenomation. We found that N. annulifera venom promoted the generation of C3a, C4a, C5a, and the soluble Terminal Complement Complex (sTCC) mediated by the action of snake venom metalloproteinases. N. annulifera venom also induced the release of lipid mediators and chemokines in a human whole-blood model. This release was complement-mediated, since C3/C3b and C5a Receptor 1 (C5aR1) inhibition mitigated the effects. In an experimental BALB/c mouse model of envenomation, N. annulifera venom promoted lipid mediator and chemokine production, neutrophil influx, and swelling at the injection site in a C5a-C5aR1 axis-dependent manner. N. annulifera venom induced systemic complementopathy and increased interleukin and chemokine production, leukocytosis, and acute lung injury (ALI). Inhibition of C5aR1 with the cyclic peptide antagonist PMX205 rescued mice from these systemic reactions and abrogated ALI development. These data reveal hitherto unrecognized roles for complement in envenomation physiopathogenesis, making complement an interesting therapeutic target in envenomation by N. annulifera and possibly by other snake venoms.
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Affiliation(s)
| | | | - Bruno Cogliati
- Department of Pathology, School of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
| | - Trent M. Woodruff
- Neuroinflammation Laboratory, School of Biomedical Sciences, The University of Queensland, St Lucia, QLD, Australia
| | - Edimara da Silva Reis
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - John D. Lambris
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
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Abstract
G-quadruplexes (G4s) are four-stranded nucleic acid structures that arise from the stacking of G-quartets, cyclic arrangements of four guanines engaged in Hoogsteen base-pairing. Until recently, most RNA G4 structures were thought to conform to a sequence pattern in which guanines stacking within the G4 would also be contiguous in sequence (e.g., four successive guanine trinucleotide tracts separated by loop nucleotides). Such a sequence restriction, and the stereochemical constraints inherent to RNA (arising, in particular, from the presence of the 2'-OH), dictate relatively simple RNA G4 structures. Recent crystallographic and solution NMR structure determinations of a number of in vitro selected RNA aptamers have revealed RNA G4 structures of unprecedented complexity. Structures of the Sc1 aptamer that binds an RGG peptide from the Fragile-X mental retardation protein, various fluorescence turn-on aptamers (Corn, Mango, and Spinach), and the spiegelmer that binds the complement protein C5a, in particular, reveal complexity hitherto unsuspected in RNA G4s, including nucleotides in syn conformation, locally inverted strand polarity, and nucleotide quartets that are not all-G. Common to these new structures, the sequences folding into G4s do not conform to the requirement that guanine stacks arise from consecutive (contiguous in sequence) nucleotides. This review highlights how emancipation from this constraint drastically expands the structural possibilities of RNA G-quadruplexes.
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Affiliation(s)
- Michael T Banco
- Biochemistry and Biophysics Center, National Heart, Lung, and Blood Institute, Bethesda, Maryland 20892-8012, USA
| | - Adrian R Ferré-D'Amaré
- Biochemistry and Biophysics Center, National Heart, Lung, and Blood Institute, Bethesda, Maryland 20892-8012, USA
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28
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Xiong J, Kuang X, Lu T, Yu K, Liu X, Zhang Z, Wang W, Zhao L, Fang Q, Wu D, Wang J. C3a and C5a facilitates the metastasis of myeloma cells by activating Nrf2. Cancer Gene Ther 2021; 28:265-278. [PMID: 32873871 DOI: 10.1038/s41417-020-00217-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 08/11/2020] [Accepted: 08/17/2020] [Indexed: 11/09/2022]
Abstract
Multiple myeloma (MM) is still an incurable hematological malignancy, with even poorer prognosis in MM patients with distant invasion. The present study was designed to explore the effects of C3a and C5a on the migration, invasion, and adhesion of MM tumor cells and to investigate the underlying mechanisms. As a result, the levels of C3a and C5a in plasma of MM patients were significantly higher than those of healthy donors. Consistently, the expression of C3a and C5a receptors on myeloma cells of MM patients was also significantly higher than that on sorted plasma cells of normal donors. C3a and C5a have been confirmed to increase the migration, invasion and adhesion of MM cell lines by activating the MEK/ERK pathway and increasing the nuclear transfer of Nrf2 in vitro. Moreover, the MM cell line U266 with Nrf2 downregulation was incubated with C3a and C5a, followed by injection into the tail vein of NOD-SCID mice. We found that Nrf2 downregulation attenuated the migration of anaphylatoxin C3a and C5a to MM tumor cells in bone marrow, liver and lung in vivo. In conclusion, our results indicate that activation of the complement cascade in MM patients may contribute to the migration, invasion and adhesion of MM cells, and this type of tumor cells dissemination in MM is, at least partially, regulated by Nrf2. Thereby, complement suppression or Nrf2 downregulation might offer a novel therapeutic opportunity for MM.
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Affiliation(s)
- Jie Xiong
- Jiangsu Institute of Hematology, National Clinical Research Center for Hematologic Diseases, the First Affiliated Hospital of Soochow University, Key Laboratory of Thrombosis and Hemostasis under Ministry of Health, Collaborative Innovation Center of Hematology, Suzhou Institute of Blood and Marrow Transplantation, 188 Shizi Street, 215006, Suzhou, Jiangsu, China
- Department of Hematology, The Affiliated Hospital of Guizhou Medical University. Hematopoietic Stem Cell Transplantation Center of Guizhou Province, Key Laboratory of Hematological Disease Diagnostic & Treat Centre of Guizhou Province. Guizhou Medical University, 550001, Guiyang, China
| | - Xingyi Kuang
- Department of Hematology, The Affiliated Hospital of Guizhou Medical University. Hematopoietic Stem Cell Transplantation Center of Guizhou Province, Key Laboratory of Hematological Disease Diagnostic & Treat Centre of Guizhou Province. Guizhou Medical University, 550001, Guiyang, China
| | - Tingting Lu
- Department of Hematology, The Affiliated Hospital of Guizhou Medical University. Hematopoietic Stem Cell Transplantation Center of Guizhou Province, Key Laboratory of Hematological Disease Diagnostic & Treat Centre of Guizhou Province. Guizhou Medical University, 550001, Guiyang, China
| | - Kunlin Yu
- Department of Hematology, The Affiliated Hospital of Guizhou Medical University. Hematopoietic Stem Cell Transplantation Center of Guizhou Province, Key Laboratory of Hematological Disease Diagnostic & Treat Centre of Guizhou Province. Guizhou Medical University, 550001, Guiyang, China
| | - Xu Liu
- Department of Critical Care Medicine, The Affiliated Hospital of Guizhou Medical University, 550001, Guiyang, China
| | - Zhaoyuan Zhang
- Department of Hematology, The Affiliated Hospital of Guizhou Medical University. Hematopoietic Stem Cell Transplantation Center of Guizhou Province, Key Laboratory of Hematological Disease Diagnostic & Treat Centre of Guizhou Province. Guizhou Medical University, 550001, Guiyang, China
| | - Weili Wang
- Department of Hematology, The Affiliated Hospital of Guizhou Medical University. Hematopoietic Stem Cell Transplantation Center of Guizhou Province, Key Laboratory of Hematological Disease Diagnostic & Treat Centre of Guizhou Province. Guizhou Medical University, 550001, Guiyang, China
| | - Lu Zhao
- Department of Hematology, The Affiliated Hospital of Guizhou Medical University. Hematopoietic Stem Cell Transplantation Center of Guizhou Province, Key Laboratory of Hematological Disease Diagnostic & Treat Centre of Guizhou Province. Guizhou Medical University, 550001, Guiyang, China
| | - Qin Fang
- Department of Pharmacy, Affiliated Hospital of Guizhou Medical University, 550001, Guiyang, China
| | - Depei Wu
- Jiangsu Institute of Hematology, National Clinical Research Center for Hematologic Diseases, the First Affiliated Hospital of Soochow University, Key Laboratory of Thrombosis and Hemostasis under Ministry of Health, Collaborative Innovation Center of Hematology, Suzhou Institute of Blood and Marrow Transplantation, 188 Shizi Street, 215006, Suzhou, Jiangsu, China.
| | - Jishi Wang
- Department of Hematology, The Affiliated Hospital of Guizhou Medical University. Hematopoietic Stem Cell Transplantation Center of Guizhou Province, Key Laboratory of Hematological Disease Diagnostic & Treat Centre of Guizhou Province. Guizhou Medical University, 550001, Guiyang, China.
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29
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Silawal S, Kohl B, Shi J, Schulze-Tanzil G. Complement Regulation in Human Tenocytes under the Influence of Anaphylatoxin C5a. Int J Mol Sci 2021; 22:ijms22063105. [PMID: 33803624 PMCID: PMC8003014 DOI: 10.3390/ijms22063105] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 03/13/2021] [Accepted: 03/15/2021] [Indexed: 12/27/2022] Open
Abstract
A central part of the complement system, the anaphylatoxin C5a was investigated in this study to learn its effects on tenocytes in respect to understanding the potential expression of other crucial complement factors and pro-inflammatory mediators involved in tendinopathy. Human hamstring tendon-derived tenocytes were treated with recombinant C5a protein in concentrations of 25 ng/mL and 100 ng/mL for 0.5 h (early phase), 4 h (intermediate phase), and 24 h (late phase). Tenocytes survival was assessed after 24 h stimulation by live-dead assay. The gene expression of complement-related factors C5aR, the complement regulatory proteins (CRPs) CD46, CD55, CD59, and of the pro-inflammatory cytokines tumor necrosis factor (TNF)-α and interleukin (IL)-6 was monitored using qPCR. Tenocytes were immunolabeled for C5aR and CD55 proteins. TNFα production was monitored by ELISA. Tenocyte survival was not impaired through C5a stimulation. Interestingly, the gene expression of C5aR and that of the CRPs CD46 and CD59 was significantly reduced in the intermediate and late phase, and that of TNFα only in an early phase, compared to the control group. ELISA analysis indicated a concomitant not significant trend of impaired TNFα protein synthesis at 4 h. However, there was also an early significant induction of CD55 and CD59 mediated by 25 ng/mL anaphylatoxin C5a. Hence, exposure of tenocytes to C5a obviously evokes a time and concentration-dependent response in their expression of complement and pro-inflammatory factors. C5a, released in damaged tendons, might directly contribute to tenocyte activation and thereby be involved in tendon healing and tendinopathy.
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Affiliation(s)
- Sandeep Silawal
- Institute of Anatomy and Cell Biology, Paracelsus Medical University, Nuremberg and Salzburg, General Hospital Nuremberg, Prof. Ernst Nathan Str. 1, 90419 Nuremberg, Germany; (S.S.); (J.S.)
| | - Benjamin Kohl
- Department of Traumatology and Reconstructive Surgery, Campus Benjamin Franklin, Charité—Universitätsmedizin Berlin, Corporate Member of Berlin Institute of Health, Freie Universität Berlin and Humboldt-Universität zu Berlin, Hindenburgdamm 30, 12203 Berlin, Germany;
| | - Jingjian Shi
- Institute of Anatomy and Cell Biology, Paracelsus Medical University, Nuremberg and Salzburg, General Hospital Nuremberg, Prof. Ernst Nathan Str. 1, 90419 Nuremberg, Germany; (S.S.); (J.S.)
| | - Gundula Schulze-Tanzil
- Institute of Anatomy and Cell Biology, Paracelsus Medical University, Nuremberg and Salzburg, General Hospital Nuremberg, Prof. Ernst Nathan Str. 1, 90419 Nuremberg, Germany; (S.S.); (J.S.)
- Correspondence: ; Tel.: +49-911-398-11-6772
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30
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Li L, Yang W, Shen Y, Xu X, Li J. The evolutionary analysis of complement component C5 and the gene co-expression network and putative interaction between C5a and C5a anaphylatoxin receptor (C5AR/CD88) in human and two Cyprinid fish. Dev Comp Immunol 2021; 116:103958. [PMID: 33290783 DOI: 10.1016/j.dci.2020.103958] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 12/02/2020] [Accepted: 12/02/2020] [Indexed: 06/12/2023]
Abstract
The complement system is a complex network of soluble and membrane-associated serum proteins that regulate immune response. Activation of the complement C5 generates C5a and C5b which generate chemoattractive effect on myeloid cells and initiate the membrane attack complex (MAC) assembly. However, the study of evolutionary process and systematic function of C5 are still limited. In this study, we performed an evolutionary analysis of C5. Phylogeny analysis indicated that C5 sequences underwent complete divergence in fish and non-fish vertebrate. It was found that codon usage bias improved and provided evolution evidence of C5 in species. Notably, the codon usage bias of grass carp was evolutionarily closer to the zebrafish genome compared with humans and stickleback. This suggested that the zebrafish cell line may provide an alternative environment for heterologous protein expression of grass carp. Sequence comparison showed a higher similarity between human and mouse, grass carp, and zebrafish. Moreover, selective pressure analysis revealed that the C5 genes in fish and non-fish vertebrates exhibited different evolutionary patterns. To study the function of C5, gene co-expression networks of human and zebrafish were built which revealed the complexity of C5 function networks in different species. The protein structure simulation of C5 indicated that grass carp and zebrafish are more similar than to human, however, differences between species in C5a proteins are extremely smaller. Spatial conformations of C5a-C5AR (CD88) protein complex were constructed, which showed that possible interaction may exist between C5a and CD88 proteins. Furthermore, the protein docking sites/residues were measured and calculated according to the minimum distance for all atoms from C5a and CD88 proteins. In summary, this study provides insights into the evolutionary history, function and potential regulatory mechanism of C5 in fish immune responses.
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Affiliation(s)
- Lisen Li
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai, 201306, China
| | - Weining Yang
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai, 201306, China
| | - Yubang Shen
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai, 201306, China.
| | - Xiaoyan Xu
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai, 201306, China
| | - Jiale Li
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai, 201306, China; Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai, 201306, China.
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Chakraborty S, Winkelmann VE, Braumüller S, Palmer A, Schultze A, Klohs B, Ignatius A, Vater A, Fauler M, Frick M, Huber-Lang M. Role of the C5a-C5a receptor axis in the inflammatory responses of the lungs after experimental polytrauma and hemorrhagic shock. Sci Rep 2021; 11:2158. [PMID: 33495506 PMCID: PMC7835219 DOI: 10.1038/s41598-020-79607-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 12/09/2020] [Indexed: 12/11/2022] Open
Abstract
Singular blockade of C5a in experimental models of sepsis is known to confer protection by rescuing lethality and decreasing pro-inflammatory responses. However, the role of inhibiting C5a has not been evaluated in the context of sterile systemic inflammatory responses, like polytrauma and hemorrhagic shock (PT + HS). In our presented study, a novel and highly specific C5a L-aptamer, NoxD21, was used to block C5a activity in an experimental murine model of PT + HS. The aim of the study was to assess early modulation of inflammatory responses and lung damage 4 h after PT + HS induction. NoxD21-treated PT + HS mice displayed greater polymorphonuclear cell recruitment in the lung, increased pro-inflammatory cytokine levels in the bronchoalveolar lavage fluids (BALF) and reduced myeloperoxidase levels within the lung tissue. An in vitro model of the alveolar-capillary barrier was established to confirm these in vivo observations. Treatment with a polytrauma cocktail induced barrier damage only after 16 h, and NoxD21 treatment in vitro did not rescue this effect. Furthermore, to test the exact role of both the cognate receptors of C5a (C5aR1 and C5aR2), experimental PT + HS was induced in C5aR1 knockout (C5aR1 KO) and C5aR2 KO mice. Following 4 h of PT + HS, C5aR2 KO mice had significantly reduced IL-6 and IL-17 levels in the BALF without significant lung damage, and both, C5aR1 KO and C5aR2 KO PT + HS animals displayed reduced MPO levels within the lungs. In conclusion, the C5aR2 could be a putative driver of early local inflammatory responses in the lung after PT + HS.
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Affiliation(s)
- Shinjini Chakraborty
- Institute of Clinical and Experimental Trauma-Immunology, Ulm University Medical Center, Helmholtzstrasse 8/1, 89081, Ulm, Germany
| | - Veronika Eva Winkelmann
- Institute of General Physiology, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Sonja Braumüller
- Institute of Clinical and Experimental Trauma-Immunology, Ulm University Medical Center, Helmholtzstrasse 8/1, 89081, Ulm, Germany
| | - Annette Palmer
- Institute of Clinical and Experimental Trauma-Immunology, Ulm University Medical Center, Helmholtzstrasse 8/1, 89081, Ulm, Germany
| | - Anke Schultze
- Institute of Clinical and Experimental Trauma-Immunology, Ulm University Medical Center, Helmholtzstrasse 8/1, 89081, Ulm, Germany
| | - Bettina Klohs
- Institute of Clinical and Experimental Trauma-Immunology, Ulm University Medical Center, Helmholtzstrasse 8/1, 89081, Ulm, Germany
| | - Anita Ignatius
- Institute of Orthopedic Research and Biomechanics, Ulm University Medical Center, Helmholtzstrasse 14, 89081, Ulm, Germany
| | - Axel Vater
- Aptarion Biotech AG, Max-Dohrn-Str. 8-10, 10589, Berlin, Germany
| | - Michael Fauler
- Institute of General Physiology, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Manfred Frick
- Institute of General Physiology, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany.
| | - Markus Huber-Lang
- Institute of Clinical and Experimental Trauma-Immunology, Ulm University Medical Center, Helmholtzstrasse 8/1, 89081, Ulm, Germany.
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Tromp AT, Zhao Y, Jongerius I, Heezius ECJM, Abrial P, Ruyken M, van Strijp JAG, de Haas CJC, Spaan AN, van Kessel KPM, Henry T, Haas PJA. Pre-existing antibody-mediated adverse effects prevent the clinical development of a bacterial anti-inflammatory protein. Dis Model Mech 2020; 13:dmm045534. [PMID: 32471891 PMCID: PMC7541340 DOI: 10.1242/dmm.045534] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Accepted: 05/04/2020] [Indexed: 12/24/2022] Open
Abstract
Bacterial pathogens have evolved to secrete strong anti-inflammatory proteins that target the immune system. It was long speculated whether these virulence factors could serve as therapeutics in diseases in which abnormal immune activation plays a role. We adopted the secreted chemotaxis inhibitory protein of Staphylococcus aureus (CHIPS) as a model virulence factor-based therapeutic agent for diseases in which C5AR1 stimulation plays an important role. We show that the administration of CHIPS in human C5AR1 knock-in mice successfully dampens C5a-mediated neutrophil migration during immune complex-initiated inflammation. Subsequent CHIPS toxicology studies in animal models were promising. However, during a small phase I trial, healthy human volunteers showed adverse effects directly after CHIPS administration. Subjects showed clinical signs of anaphylaxis with mild leukocytopenia and increased C-reactive protein concentrations, which are possibly related to the presence of relatively high circulating anti-CHIPS antibodies and suggest an inflammatory response. Even though our data in mice show CHIPS as a potential anti-inflammatory agent, safety issues in human subjects temper the use of CHIPS in its current form as a therapeutic candidate. The use of staphylococcal proteins, or other bacterial proteins, as therapeutics or immune-modulators in humans is severely hampered by pre-existing circulating antibodies.
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Affiliation(s)
- Angelino T Tromp
- Department of Medical Microbiology, University Medical Center Utrecht, 3584CX Utrecht, The Netherlands
| | - Yuxi Zhao
- Department of Medical Microbiology, University Medical Center Utrecht, 3584CX Utrecht, The Netherlands
| | - Ilse Jongerius
- Department of Medical Microbiology, University Medical Center Utrecht, 3584CX Utrecht, The Netherlands
- Sanquin Research, Department of Immunopathology, 1006AD Amsterdam, The Netherlands
- Landsteiner Laboratory, Amsterdam UMC, University of Amsterdam, 1105AZ Amsterdam, The Netherlands
| | - Erik C J M Heezius
- Department of Medical Microbiology, University Medical Center Utrecht, 3584CX Utrecht, The Netherlands
| | - Pauline Abrial
- Centre International de Recherche en Infectiologie, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS UMR5308, Ecole Normale Supérieure de Lyon, Université Lyon, 69007 Lyon, France
| | - Maartje Ruyken
- Department of Medical Microbiology, University Medical Center Utrecht, 3584CX Utrecht, The Netherlands
| | - Jos A G van Strijp
- Department of Medical Microbiology, University Medical Center Utrecht, 3584CX Utrecht, The Netherlands
| | - Carla J C de Haas
- Department of Medical Microbiology, University Medical Center Utrecht, 3584CX Utrecht, The Netherlands
| | - András N Spaan
- Department of Medical Microbiology, University Medical Center Utrecht, 3584CX Utrecht, The Netherlands
- St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, NY 10065, USA
| | - Kok P M van Kessel
- Department of Medical Microbiology, University Medical Center Utrecht, 3584CX Utrecht, The Netherlands
| | - Thomas Henry
- Sanquin Research, Department of Immunopathology, 1006AD Amsterdam, The Netherlands
| | - Pieter-Jan A Haas
- Department of Medical Microbiology, University Medical Center Utrecht, 3584CX Utrecht, The Netherlands
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Chauhan AJ, Wiffen LJ, Brown TP. COVID-19: A collision of complement, coagulation and inflammatory pathways. J Thromb Haemost 2020; 18:2110-2117. [PMID: 32608159 PMCID: PMC7361520 DOI: 10.1111/jth.14981] [Citation(s) in RCA: 91] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 06/19/2020] [Accepted: 06/22/2020] [Indexed: 12/13/2022]
Abstract
COVID-19 is frequently accompanied by a hypercoagulable inflammatory state with microangiopathic pulmonary changes that can precede the diffuse alveolar damage characteristic of typical acute respiratory distress syndrome (ARDS) seen in other severe pathogenic infections. Parallels with systemic inflammatory disorders such as atypical hemolytic uremic syndrome (aHUS) have implicated the complement pathway in the pathogenesis of COVID-19, and particularly the anaphylatoxins C3a and C5a released from cleavage of C3 and C5, respectively. C5a is a potent cell signalling protein that activates a cytokine storm-a hyper-inflammatory phenomenon-within hours of infection and the innate immune response. However, excess C5a can result in a pro-inflammatory environment orchestrated through a plethora of mechanisms that propagate lung injury, lymphocyte exhaustion, and an immune paresis. Furthermore, disruption of the homeostatic interactions between complement and extrinsic and intrinsic coagulation pathways contributes to a net pro-coagulant state in the microvasculature of critical organs. Fatal COVID-19 has been associated with a systemic inflammatory response accompanied by a pro-coagulant state and organ damage, particularly microvascular thrombi in the lungs and kidneys. Pathologic studies report strong evidence of complement activation. C5 blockade reduces inflammatory cytokines and their manifestations in animal studies, and has shown benefits in patients with aHUS, prompting investigation of this approach in the treatment of COVID-19. This review describes the role of the complement pathway and particularly C5a and its aberrations in highly pathogenic virus infections, and therefore its potential as a therapeutic target in COVID-19.
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Affiliation(s)
- Anoop J Chauhan
- Research and Innovation, Queen Alexandra Hospital, Portsmouth, UK
- Faculty of Science and Health, University of Portsmouth, Portsmouth, UK
- Respiratory Medicine, Queen Alexandra Hospital, Portsmouth, UK
| | - Laura J Wiffen
- Research and Innovation, Queen Alexandra Hospital, Portsmouth, UK
- Respiratory Medicine, Queen Alexandra Hospital, Portsmouth, UK
| | - Thomas P Brown
- Research and Innovation, Queen Alexandra Hospital, Portsmouth, UK
- Respiratory Medicine, Queen Alexandra Hospital, Portsmouth, UK
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Merle NS, Leon J, Poillerat V, Grunenwald A, Boudhabhay I, Knockaert S, Robe-Rybkine T, Torset C, Pickering MC, Chauvet S, Fremeaux-Bacchi V, Roumenina LT. Circulating FH Protects Kidneys From Tubular Injury During Systemic Hemolysis. Front Immunol 2020; 11:1772. [PMID: 32849636 PMCID: PMC7426730 DOI: 10.3389/fimmu.2020.01772] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 07/02/2020] [Indexed: 12/17/2022] Open
Abstract
Intravascular hemolysis of any cause can induce acute kidney injury (AKI). Hemolysis-derived product heme activates the innate immune complement system and contributes to renal damage. Therefore, we explored the role of the master complement regulator Factor H (FH) in the kidney's resistance to hemolysis-mediated AKI. Acute systemic hemolysis was induced in mice lacking liver expression of FH (hepatoFH-/-, ~20% residual FH) and in WT controls, by phenylhydrazine injection. The impaired complement regulation in hepatoFH-/- mice resulted in a delayed but aggravated phenotype of hemolysis-related kidney injuries. Plasma urea as well as markers for tubular (NGAL, Kim-1) and vascular aggression peaked at day 1 in WT mice and normalized at day 2, while they increased more in hepatoFH-/- compared to the WT and still persisted at day 4. These were accompanied by exacerbated tubular dilatation and the appearance of tubular casts in the kidneys of hemolytic hepatoFH-/- mice. Complement activation in hemolytic mice occurred in the circulation and C3b/iC3b was deposited in glomeruli in both strains. Both genotypes presented with positive staining of FH in the glomeruli, but hepatoFH-/- mice had reduced staining in the tubular compartment. Despite the clear phenotype of tubular injury, no complement activation was detected in the tubulointerstitium of the phenylhydrazin-injected mice irrespective of the genotype. Nevertheless, phenylhydrazin triggered overexpression of C5aR1 in tubules, predominantly in hepatoFH-/- mice. Moreover, C5b-9 was deposited only in the glomeruli of the hemolytic hepatoFH-/- mice. Therefore, we hypothesize that C5a, generated in the glomeruli, could be filtered into the tubulointerstitium to activate C5aR1 expressed by tubular cells injured by hemolysis-derived products and will aggravate the tissue injury. Plasma-derived FH is critical for the tubular protection, since pre-treatment of the hemolytic hepatoFH-/- mice with purified FH attenuated the tubular injury. Worsening of acute tubular necrosis in the hepatoFH-/- mice was trigger-dependent, as it was also observed in LPS-induced septic AKI model but not in chemotherapy-induced AKI upon cisplatin injection. In conclusion, plasma FH plays a key role in protecting the kidneys, especially the tubules, against hemolysis-mediated injury. Thus, FH-based molecules might be explored as promising therapeutic agents in a context of AKI.
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Affiliation(s)
- Nicolas S. Merle
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, Paris, France
| | - Juliette Leon
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, Paris, France
| | - Victoria Poillerat
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, Paris, France
| | - Anne Grunenwald
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, Paris, France
| | - Idris Boudhabhay
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, Paris, France
| | - Samantha Knockaert
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, Paris, France
| | - Tania Robe-Rybkine
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, Paris, France
| | - Carine Torset
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, Paris, France
| | - Matthew C. Pickering
- Centre for Complement and Inflammation Research, Imperial College London, London, United Kingdom
| | - Sophie Chauvet
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, Paris, France
- Assistance Publique – Hôpitaux de Paris, Service de Nephrologie, Hôpital Européen Georges Pompidou, Paris, France
| | - Veronique Fremeaux-Bacchi
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, Paris, France
- Assistance Publique – Hôpitaux de Paris, Service d'Immunologie Biologique, Hôpital Européen Georges Pompidou, Paris, France
| | - Lubka T. Roumenina
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, Paris, France
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Mahmudpour M, Roozbeh J, Keshavarz M, Farrokhi S, Nabipour I. COVID-19 cytokine storm: The anger of inflammation. Cytokine 2020; 133:155151. [PMID: 32544563 PMCID: PMC7260598 DOI: 10.1016/j.cyto.2020.155151] [Citation(s) in RCA: 289] [Impact Index Per Article: 72.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 05/20/2020] [Accepted: 05/28/2020] [Indexed: 02/06/2023]
Abstract
Patients with COVID-19 who require ICU admission might have the cytokine storm. It is a state of out-of-control release of a variety of inflammatory cytokines. The molecular mechanism of the cytokine storm has not been explored extensively yet. The attachment of SARS-CoV-2 spike glycoprotein with angiotensin-converting enzyme 2 (ACE2), as its cellular receptor, triggers complex molecular events that leads to hyperinflammation. Four molecular axes that may be involved in SARS-CoV-2 driven inflammatory cytokine overproduction are addressed in this work. The virus-mediated down-regulation of ACE2 causes a burst of inflammatory cytokine release through dysregulation of the renin-angiotensin-aldosterone system (ACE/angiotensin II/AT1R axis), attenuation of Mas receptor (ACE2/MasR axis), increased activation of [des-Arg9]-bradykinin (ACE2/bradykinin B1R/DABK axis), and activation of the complement system including C5a and C5b-9 components. The molecular clarification of these axes will elucidate an array of therapeutic strategies to confront the cytokine storm in order to prevent and treat COVID-19 associated acute respiratory distress syndrome.
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Affiliation(s)
- Mehdi Mahmudpour
- The Persian Gulf Tropical Medicine Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Jamshid Roozbeh
- Shiraz Nephro-Urology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohsen Keshavarz
- The Persian Gulf Tropical Medicine Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Shokrollah Farrokhi
- Department of Immunology and Allergy, The Persian Gulf Tropical Medicine Research Center, The Persian Gulf Biomedical Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Iraj Nabipour
- The Persian Gulf Tropical Medicine Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran; Future Studies Group, The Academy of Medical Sciences of the I.R., Iran.
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36
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Karadadas E, Hortu I, Ak H, Ergenoglu AM, Karadadas N, Aydin HH. Evaluation of complement system proteins C3a, C5a and C6 in patients of endometriosis. Clin Biochem 2020; 81:15-19. [PMID: 32325082 DOI: 10.1016/j.clinbiochem.2020.04.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 04/09/2020] [Accepted: 04/17/2020] [Indexed: 02/05/2023]
Abstract
BACKGROUND Endometriosis is a disease that shows auto-immune and chronic characteristics, suggesting a role for proteins mediating immune interactions in its pathophysiology. The aim was to evaluate C3a and C5a for their role in inflammatory responses and C6 as the down-stream interactor following our previous findings on C5 mRNA expression changes in endometriosis [1]. METHODS Sera from 71 endometriosis patients and 77 women without endometriosis were taken. While the samples were taken only once from the controls, the patient samples were taken before, in 1st and in 7th days after laparoscopy. Levels of complement proteins C3a, C5a and C6 were measured with ELISA assays. MPV (Mean Platelet Volume), CRP (C-Reactive Protein) and NLR (Neutrophil-to-Leukocyte Ratio) were also analyzed from the retrospective data. RESULTS C6 levels of early-stage patients at postoperative 1st day were significantly higher than controls. Patients with high MPV measurements had significantly higher C3a (p < 0.0001) and C6 (p < 0.05) levels than controls at all times of measurement. CONCLUSIONS C6, an integral component of the membrane attack complex (MAC), could play a role at early disease-stage. The changes in levels of complement proteins and their relation to high MPV levels suggest a broader area of interplay for immune interactors in endometriosis. Although a bigger and longitudinal study design is needed to obtain more accurate results to evaluate these proteins as potential biomarkers, an important role of complement system within the pathophysiology of endometriosis is apparent.
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Affiliation(s)
- Elif Karadadas
- Faculty of Medicine, Department of Medical Biochemistry, Ege University, Bornova, Izmir 35100, Turkey
| | - Ismet Hortu
- Faculty of Medicine, Department of Gynecology and Obstetrics, Ege University, Bornova, Izmir 35100, Turkey
| | - Handan Ak
- Faculty of Medicine, Department of Medical Biochemistry, Ege University, Bornova, Izmir 35100, Turkey
| | - Ahmet Mete Ergenoglu
- Faculty of Medicine, Department of Gynecology and Obstetrics, Ege University, Bornova, Izmir 35100, Turkey
| | - Nedim Karadadas
- Faculty of Medicine, Department of Gynecology and Obstetrics, Ege University, Bornova, Izmir 35100, Turkey.
| | - Hikmet Hakan Aydin
- Faculty of Medicine, Department of Medical Biochemistry, Ege University, Bornova, Izmir 35100, Turkey.
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37
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Gregory Rivera M, Sampson AC, Hair PS, Pallera HK, Jackson KG, Enos AI, Vazifedan T, Werner AL, Goldberg CL, Lattanzio FA, Cunnion KM, Krishna NK. Incompatible erythrocyte transfusion with lipopolysaccharide induces acute lung injury in a novel rat model. PLoS One 2020; 15:e0230482. [PMID: 32310973 PMCID: PMC7170260 DOI: 10.1371/journal.pone.0230482] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Accepted: 03/02/2020] [Indexed: 12/01/2022] Open
Abstract
Acute transfusion reactions can manifest in many forms including acute hemolytic transfusion reaction, allergic reaction and transfusion-related acute lung injury. We previously developed an acute hemolytic transfusion reaction rat model mediated by transfusion of incompatible human erythrocytes against which rats have preexisting antibodies resulting in classical complement pathway mediated intravascular hemolysis. In this study, the acute hemolytic transfusion reaction model was adapted to yield an acute lung injury phenotype. Adolescent male Wistar rats were primed in the presence or absence of lipopolysaccharide followed by transfusion of incompatible erythrocytes. Blood was collected at various time points during the course of the experiment to determine complement C5a levels and free DNA in isolated plasma. At 4 hours, blood and lung tissue were recovered and assayed for complete blood count and histological acute lung injury, respectively. Compared to sham animals or animals receiving increasing amounts of incompatible erythrocytes (equivalent to a 15–45% transfusion) in the absence of lipopolysaccharide, lungs of animals receiving lipopolysaccharide and a 30% erythrocyte transfusion showed dramatic alveolar wall thickening due to neutrophil infiltration. C5a levels were significantly elevated in these animals indicating that complement activation contributes to lung damage. Additionally, these animals demonstrated a significant increase of free DNA in the blood over time suggestive of neutrophil extracellular trap formation previously associated with transfusion-related acute lung injury in humans and mice. This novel ‘two-hit’ model utilizing incompatible erythrocyte transfusion in the presence of lipopolysaccharide yields a robust acute lung injury phenotype.
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Affiliation(s)
- Magdielis Gregory Rivera
- Department of Pediatrics, Eastern Virginia Medical School, Norfolk, Virginia, United States of America
| | - Alana C. Sampson
- Department of Microbiology and Molecular Cell Biology, Eastern Virginia Medical School, Norfolk, Virginia, United States of America
| | - Pamela S. Hair
- Department of Pediatrics, Eastern Virginia Medical School, Norfolk, Virginia, United States of America
| | - Haree K. Pallera
- Department of Pediatrics, Eastern Virginia Medical School, Norfolk, Virginia, United States of America
| | - Kaitlyn G. Jackson
- Department of Microbiology and Molecular Cell Biology, Eastern Virginia Medical School, Norfolk, Virginia, United States of America
| | - Adrianne I. Enos
- Department of Pediatrics, Eastern Virginia Medical School, Norfolk, Virginia, United States of America
| | - Turaj Vazifedan
- Department of Pediatrics, Eastern Virginia Medical School, Norfolk, Virginia, United States of America
- Children’s Hospital of The King’s Daughters, Norfolk, Virginia, United States of America
| | - Alice L. Werner
- Department of Pediatrics, Eastern Virginia Medical School, Norfolk, Virginia, United States of America
- Children’s Hospital of The King’s Daughters, Norfolk, Virginia, United States of America
- Children’s Specialty Group, Norfolk, Virginia, United States of America
| | | | - Frank A. Lattanzio
- Department of Physiological Sciences, Eastern Virginia Medical School, Norfolk, Virginia, United States of America
| | - Kenji M. Cunnion
- Department of Pediatrics, Eastern Virginia Medical School, Norfolk, Virginia, United States of America
- Department of Microbiology and Molecular Cell Biology, Eastern Virginia Medical School, Norfolk, Virginia, United States of America
- Children’s Hospital of The King’s Daughters, Norfolk, Virginia, United States of America
- Children’s Specialty Group, Norfolk, Virginia, United States of America
| | - Neel K. Krishna
- Department of Pediatrics, Eastern Virginia Medical School, Norfolk, Virginia, United States of America
- Department of Microbiology and Molecular Cell Biology, Eastern Virginia Medical School, Norfolk, Virginia, United States of America
- * E-mail:
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38
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Ghouse SM, Vadrevu SK, Manne S, Reese B, Patel J, Patel B, Silwal A, Lodhi N, Paterson Y, Srivastava SK, Karbowniczek M, Markiewski MM. Therapeutic Targeting of Vasculature in the Premetastatic and Metastatic Niches Reduces Lung Metastasis. J Immunol 2020; 204:990-1000. [PMID: 31900334 PMCID: PMC7012400 DOI: 10.4049/jimmunol.1901208] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Accepted: 12/05/2019] [Indexed: 02/06/2023]
Abstract
In the metastasis-targeted organs, angiogenesis is essential for the progression of dormant micrometastases to rapidly growing and clinically overt lesions. However, we observed changes suggesting angiogenic switching in the mouse lungs prior to arrival of tumor cells (i.e., in the premetastatic niche) in the models of breast carcinoma. This angiogenic switching appears to be caused by myeloid-derived suppressor cells recruited to the premetastatic lungs through complement C5a receptor 1 signaling. These myeloid cells are known to secrete several proangiogenic factors in tumors, including IL-1β and matrix metalloproteinase-9, and we found upregulation of these genes in the premetastatic lungs. Blockade of C5a receptor 1 synergized with antiangiogenic Listeria monocytogenes-based vaccines to decrease the lung metastatic burden by reducing vascular density and improving antitumor immunity in the lungs. This was mediated even when growth of primary breast tumors was not affected by these treatments. This work provides initial evidence that angiogenesis contributes to the premetastatic niche in rapidly progressing cancers and that inhibiting this process through immunotherapy is beneficial for reducing or even preventing metastasis.
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MESH Headings
- Angiogenesis Inhibitors/pharmacology
- Angiogenesis Inhibitors/therapeutic use
- Animals
- Antineoplastic Agents, Immunological/pharmacology
- Antineoplastic Agents, Immunological/therapeutic use
- Cancer Vaccines/administration & dosage
- Cell Line, Tumor
- Combined Modality Therapy/methods
- Complement C5a/immunology
- Complement C5a/metabolism
- Female
- Humans
- Immunotherapy/methods
- Listeria monocytogenes/immunology
- Lung/blood supply
- Lung/immunology
- Lung/pathology
- Lung Neoplasms/blood supply
- Lung Neoplasms/immunology
- Lung Neoplasms/secondary
- Lung Neoplasms/therapy
- Mammary Neoplasms, Experimental/immunology
- Mammary Neoplasms, Experimental/pathology
- Mammary Neoplasms, Experimental/therapy
- Matrix Metalloproteinase 9/metabolism
- Mice
- Mice, Knockout
- Myeloid-Derived Suppressor Cells/immunology
- Myeloid-Derived Suppressor Cells/metabolism
- Neoplasm Metastasis/immunology
- Neoplasm Metastasis/therapy
- Neovascularization, Pathologic/immunology
- Neovascularization, Pathologic/therapy
- Receptor, Anaphylatoxin C5a/antagonists & inhibitors
- Receptor, Anaphylatoxin C5a/genetics
- Receptor, Anaphylatoxin C5a/metabolism
- Tumor Microenvironment/immunology
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Affiliation(s)
- Shanawaz M Ghouse
- Department of Immunotherapeutics and Biotechnology, School of Pharmacy, Texas Tech University Health Sciences Center, Abilene, TX 79601
| | - Surya K Vadrevu
- Department of Immunotherapeutics and Biotechnology, School of Pharmacy, Texas Tech University Health Sciences Center, Abilene, TX 79601
| | - Sasikanth Manne
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104; and
| | - Britney Reese
- Department of Immunotherapeutics and Biotechnology, School of Pharmacy, Texas Tech University Health Sciences Center, Abilene, TX 79601
| | - Jalpa Patel
- Department of Immunotherapeutics and Biotechnology, School of Pharmacy, Texas Tech University Health Sciences Center, Abilene, TX 79601
| | - Bhaumik Patel
- Department of Immunotherapeutics and Biotechnology, School of Pharmacy, Texas Tech University Health Sciences Center, Abilene, TX 79601
| | - Ashok Silwal
- Department of Immunotherapeutics and Biotechnology, School of Pharmacy, Texas Tech University Health Sciences Center, Abilene, TX 79601
| | - Niraj Lodhi
- Department of Immunotherapeutics and Biotechnology, School of Pharmacy, Texas Tech University Health Sciences Center, Abilene, TX 79601
| | - Yvonne Paterson
- Department of Microbiology, Perlman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Sanjay K Srivastava
- Department of Immunotherapeutics and Biotechnology, School of Pharmacy, Texas Tech University Health Sciences Center, Abilene, TX 79601
| | - Magdalena Karbowniczek
- Department of Immunotherapeutics and Biotechnology, School of Pharmacy, Texas Tech University Health Sciences Center, Abilene, TX 79601
| | - Maciej M Markiewski
- Department of Immunotherapeutics and Biotechnology, School of Pharmacy, Texas Tech University Health Sciences Center, Abilene, TX 79601;
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Saito K, Iioka H, Maruyama S, Sumardika IW, Sakaguchi M, Kondo E. PODXL1 promotes metastasis of the pancreatic ductal adenocarcinoma by activating the C5aR/C5a axis from the tumor microenvironment. Neoplasia 2019; 21:1121-1132. [PMID: 31759250 PMCID: PMC6872781 DOI: 10.1016/j.neo.2019.09.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 09/17/2019] [Accepted: 09/18/2019] [Indexed: 12/12/2022]
Abstract
Pancreatic invasive ductal adenocarcinoma (PDAC) is a representative intractable malignancy under the current cancer therapies, and is considered a scirrhous carcinoma because it develops dense stroma. Both PODXL1, a member of CD34 family molecules, and C5aR, a critical cell motility inducer, have gained recent attention, as their expression was reported to correlate with poor prognosis for patients with diverse origins including PDAC; however, previous studies reported independently on their respective biological significance. Here we demonstrate that PODXL1 is essential for metastasis of PDAC cells through its specific interaction with C5aR. In vitro assay demonstrated that PODXL1 bound to C5aR, which stabilized C5aR protein and recruited it to cancer cell plasma membranes to receive C5a, an inflammatory chemoattractant factor. PODXL1 knockout in PDAC cells abrogated their metastatic property in vivo, emulating the liver metastatic mouse model treated with anti-C5a neutralizing antibody. In molecular studies, PODXL1 triggered EMT on PDAC cells in response to stimulation by C5a, corroborating PODXL1 involvement in PDAC cellular invasive properties via specific interaction with the C5aR/C5a axis. Confirming the molecular assays, histological examination showed coexpression of PODXL1 and C5aR at the invasive front of primary cancer nests as well as in liver metastatic foci of PDAC both in the mouse metastasis model and patient tissues. Hence, the novel direct interaction between PODXL1 and the C5aR/C5a axis may provide a better integrated understanding of PDAC biological characteristics including its tumor microenvironment factors.
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Key Words
- podxl1, podocalyxin-like 1
- pdac, pancreatic invasive ductal adenocarcinoma
- c5ar, complement component 5a receptor 1 (c5ar1, cd88)
- caf, cancer-associated fibroblast
- emt, epithelial-mesenchymal transition
- ips, induced pluripotent stem
- itgb1, integrin β1
- wt, wild type
- ko, knockout
- ihc, immunohistochemistry
- ib, immunoblot
- ip, immunoprecipitation
- if, immunofluorescence
- hpne, human immortalized pancreatic ductal epithelium
- nhdf, normal human dermal fibroblast
- mmp, matrix metalloproteinases
- ab, antibody
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Affiliation(s)
- Ken Saito
- Division of Molecular and Cellular Pathology, Niigata University Graduate School of Medical and Dental Sciences, 757 Ichibancho, Asahimachi-dori, Chuo Ward, Niigata City 951-8510, Japan
| | - Hidekazu Iioka
- Division of Molecular and Cellular Pathology, Niigata University Graduate School of Medical and Dental Sciences, 757 Ichibancho, Asahimachi-dori, Chuo Ward, Niigata City 951-8510, Japan
| | - Satoshi Maruyama
- Oral Pathology Section, Department of Surgical Pathology, Niigata University Hospital, 2-5274 Gakkoucho-dori, Chuo Ward, Niigata City 951-8514, Japan
| | - I Wayan Sumardika
- Department of Cell Biology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558 Japan
| | - Masakiyo Sakaguchi
- Department of Cell Biology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558 Japan
| | - Eisaku Kondo
- Division of Molecular and Cellular Pathology, Niigata University Graduate School of Medical and Dental Sciences, 757 Ichibancho, Asahimachi-dori, Chuo Ward, Niigata City 951-8510, Japan.
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40
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Gutjahr A, Heck F, Emtenani S, Hammers AK, Hundt JE, Muck P, Siegel DL, Schmidt E, Stanley JR, Zillikens D, Hammers CM. Bullous pemphigoid autoantibody-mediated complement fixation is abolished by the low-molecular-weight heparin tinzaparin sodium. Br J Dermatol 2019; 181:593-594. [PMID: 31124130 DOI: 10.1111/bjd.18156] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- A Gutjahr
- Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany
| | - F Heck
- Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany
| | - S Emtenani
- Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany
| | - A-K Hammers
- Flensburg Specialist Veterinary Centre for Small Animals, Flensburg, Germany
| | - J E Hundt
- Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany
| | - P Muck
- Department of Internal Medicine, University of Lübeck, Lübeck, Germany
| | - D L Siegel
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA, U.S.A
| | - E Schmidt
- Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany
- Department of Dermatology, University of Lübeck, Lübeck, Germany
| | - J R Stanley
- Department of Dermatology, University of Pennsylvania, Philadelphia, PA, U.S.A
| | - D Zillikens
- Department of Dermatology, University of Lübeck, Lübeck, Germany
| | - C M Hammers
- Lübeck Institute of Experimental Dermatology (LIED), University of Lübeck, Lübeck, Germany
- Department of Dermatology, University of Lübeck, Lübeck, Germany
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41
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Miyabe Y, Miyabe C, Mani V, Mempel TR, Luster AD. Atypical complement receptor C5aR2 transports C5a to initiate neutrophil adhesion and inflammation. Sci Immunol 2019; 4:eaav5951. [PMID: 31076525 DOI: 10.1126/sciimmunol.aav5951] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 03/29/2019] [Indexed: 12/14/2022]
Abstract
Chemoattractant-induced arrest of circulating leukocytes and their subsequent diapedesis is a fundamental component of inflammation. However, how tissue-derived chemoattractants are transported into the blood vessel lumen to induce leukocyte entry into tissue is not well understood. Here, intravital microscopy in live mice has shown that the "atypical" complement C5a receptor 2 (C5aR2) and the atypical chemokine receptor 1 (ACKR1) expressed on endothelial cells were required for the transport of C5a and CXCR2 chemokine ligands, respectively, into the vessel lumen in a murine model of immune complex-induced arthritis. Transported C5a was required to initiate C5aR1-mediated neutrophil arrest, whereas transported chemokines were required to initiate CXCR2-dependent neutrophil transdendothelial migration. These findings provide new insights into how atypical chemoattractant receptors collaborate with "classical" signaling chemoattractant receptors to control distinct steps in the recruitment of neutrophils into tissue sites of inflammation.
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Affiliation(s)
- Yoshishige Miyabe
- Center for Immunology and Inflammatory Diseases, Division of Rheumatology, Allergy and Immunology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Chie Miyabe
- Center for Immunology and Inflammatory Diseases, Division of Rheumatology, Allergy and Immunology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Vinidhra Mani
- Center for Immunology and Inflammatory Diseases, Division of Rheumatology, Allergy and Immunology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Thorsten R Mempel
- Center for Immunology and Inflammatory Diseases, Division of Rheumatology, Allergy and Immunology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Andrew D Luster
- Center for Immunology and Inflammatory Diseases, Division of Rheumatology, Allergy and Immunology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
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Kobayakawa K, Ohkawa Y, Yoshizaki S, Tamaru T, Saito T, Kijima K, Yokota K, Hara M, Kubota K, Matsumoto Y, Harimaya K, Ozato K, Masuda T, Tsuda M, Tamura T, Inoue K, Edgerton VR, Iwamoto Y, Nakashima Y, Okada S. Macrophage centripetal migration drives spontaneous healing process after spinal cord injury. Sci Adv 2019; 5:eaav5086. [PMID: 31106270 PMCID: PMC6520026 DOI: 10.1126/sciadv.aav5086] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Accepted: 04/11/2019] [Indexed: 05/31/2023]
Abstract
Traumatic spinal cord injury (SCI) brings numerous inflammatory cells, including macrophages, from the circulating blood to lesions, but pathophysiological impact resulting from spatiotemporal dynamics of macrophages is unknown. Here, we show that macrophages centripetally migrate toward the lesion epicenter after infiltrating into the wide range of spinal cord, depending on the gradient of chemoattractant C5a. However, macrophages lacking interferon regulatory factor 8 (IRF8) cannot migrate toward the epicenter and remain widely scattered in the injured cord with profound axonal loss and little remyelination, resulting in a poor functional outcome after SCI. Time-lapse imaging and P2X/YRs blockade revealed that macrophage migration via IRF8 was caused by purinergic receptors involved in the C5a-directed migration. Conversely, pharmacological promotion of IRF8 activation facilitated macrophage centripetal movement, thereby improving the SCI recovery. Our findings reveal the importance of macrophage centripetal migration via IRF8, providing a novel therapeutic target for central nervous system injury.
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Affiliation(s)
- Kazu Kobayakawa
- Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
- Department of Orthopedic Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
- Department of Integrative Biology and Physiology, University of California, Los Angeles, Los Angeles, CA, USA
- Department of Orthopedic Surgery, Spinal Injuries Center, Iizuka, Japan
| | - Yasuyuki Ohkawa
- Division of Transcriptomics, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - Shingo Yoshizaki
- Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
- Department of Orthopedic Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Tetsuya Tamaru
- Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
- Department of Orthopedic Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Takeyuki Saito
- Department of Orthopedic Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Ken Kijima
- Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
- Department of Orthopedic Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Kazuya Yokota
- Department of Orthopedic Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Masamitsu Hara
- Department of Orthopedic Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
- Department of Integrative Biology and Physiology, University of California, Los Angeles, Los Angeles, CA, USA
| | - Kensuke Kubota
- Department of Orthopedic Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
- Department of Orthopedic Surgery, Spinal Injuries Center, Iizuka, Japan
| | - Yoshihiro Matsumoto
- Department of Orthopedic Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Katsumi Harimaya
- Department of Orthopedic Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Keiko Ozato
- Program in Genomics of Differentiation, NICHD, National Institutes of Health, Bethesda, MD, USA
| | - Takahiro Masuda
- Department of Molecular and System Pharmacology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Makoto Tsuda
- Department of Life Innovation, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Tomohiko Tamura
- Department of Immunology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Kazuhide Inoue
- Department of Molecular and System Pharmacology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - V. Reggie Edgerton
- Department of Integrative Biology and Physiology, University of California, Los Angeles, Los Angeles, CA, USA
| | | | - Yasuharu Nakashima
- Department of Orthopedic Surgery, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Seiji Okada
- Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
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Abstract
Necrotizing enterocolitis (NEC) is a devastating disease of prematurity, with no current method for early diagnosis. Diagnosis is particularly challenging, frequently occurring after the disease has progressed to the point of significant and often irreversible intestinal damage. Biomarker research has tremendous potential to advance clinical management of NEC and our understanding of its pathogenesis. This review discusses the need for novel biomarkers in NEC management, evaluates studies investigating such biomarkers, and explains the difficulties associated with translating biomarker discovery into clinical use.
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Affiliation(s)
- Gregory P Goldstein
- Department of Pediatrics, Stanford University School of Medicine, Palo Alto, CA 94304
| | - Karl G Sylvester
- Department of Surgery, Division of Pediatric Surgery, 300 Pasteur Drive, Alway Building M116, MC 5733, Stanford, CA 94305.
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Skjeflo EW, Christiansen D, Fure H, Ludviksen JK, Woodruff TM, Espevik T, Nielsen EW, Brekke OL, Mollnes TE. Staphylococcus aureus-induced complement activation promotes tissue factor-mediated coagulation. J Thromb Haemost 2018; 16:905-918. [PMID: 29437288 DOI: 10.1111/jth.13979] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Indexed: 12/13/2022]
Abstract
Essentials Complement, Toll-like receptors and coagulation cross-talk in the process of thromboinflammation. This is explored in a unique human whole-blood model of S. aureus bacteremia. Coagulation is here shown as a downstream event of C5a-induced tissue factor (TF) production. Combined inhibition of C5 and CD14 efficiently attenuated TF and coagulation. SUMMARY Background There is extensive cross-talk between the complement system, the Toll-like receptors (TLRs), and hemostasis. Consumptive coagulopathy is a hallmark of sepsis, and is often mediated through increased tissue factor (TF) expression. Objectives To study the relative roles of complement, TLRs and TF in Staphylococcus aureus-induced coagulation. Methods Lepirudin-anticoagulated human whole blood was incubated with the three S. aureus strains Cowan, Wood, and Newman. C3 was inhibited with compstatin, C5 with eculizumab, C5a receptor 1 (C5aR1) and activated factor XII with peptide inhibitors, CD14, TLR2 and TF with neutralizing antibodies, and TLR4 with eritoran. Complement activation was measured by ELISA. Coagulation was measured according to prothrombin fragment 1 + 2 (PTF1 + 2 ) determined with ELISA, and TF mRNA, monocyte surface expression and functional activity were measured with quantitative PCR, flow cytometry, and ELISA, respectively. Results All three strains generated substantial and statistically significant amounts of C5a, terminal complement complex, PTF1 + 2 , and TF mRNA, and showed substantial TF surface expression on monocytes and TF functional activity. Inhibition of C5 cleavage most efficiently and significantly inhibited all six markers in strains Cowan and Wood, and five markers in Newman. The effect of complement inhibition was shown to be completely dependent on C5aR1. The C5 blocking effect was equally potentiated when combined with blocking of CD14 or TLR2, but not TLR4. TF blocking significantly reduced PTF1 + 2 levels to baseline levels. Conclusions S. aureus-induced coagulation in human whole blood was mainly attributable to C5a-induced mRNA upregulation, monocyte TF expression, and plasma TF activity, thus underscoring complement as a key player in S. aureus-induced coagulation.
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Affiliation(s)
- E W Skjeflo
- Research Laboratory, Nordland Hospital, Bodø, Norway
- Faculty of Health Sciences, K. G. Jebsen TREC, UiT - The Arctic University of Norway, Tromsø, Norway
| | | | - H Fure
- Research Laboratory, Nordland Hospital, Bodø, Norway
| | - J K Ludviksen
- Research Laboratory, Nordland Hospital, Bodø, Norway
| | - T M Woodruff
- School of Biomedical Sciences, The University of Queensland, Brisbane, Queensland, Australia
| | - T Espevik
- Center of Molecular Inflammation Research, and Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - E W Nielsen
- Faculty of Health Sciences, K. G. Jebsen TREC, UiT - The Arctic University of Norway, Tromsø, Norway
- Department of Anesthesiology, Nordland Hospital, Bodø, Norway
- Faculty of Nursing and Health Sciences, Nord University, Bodø, Norway
| | - O L Brekke
- Research Laboratory, Nordland Hospital, Bodø, Norway
- Faculty of Health Sciences, K. G. Jebsen TREC, UiT - The Arctic University of Norway, Tromsø, Norway
| | - T E Mollnes
- Research Laboratory, Nordland Hospital, Bodø, Norway
- Faculty of Health Sciences, K. G. Jebsen TREC, UiT - The Arctic University of Norway, Tromsø, Norway
- Center of Molecular Inflammation Research, and Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
- Department of Immunology, Oslo University Hospital and K. G. Jebsen IRC, University of Oslo, Oslo, Norway
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Morser J, Shao Z, Nishimura T, Zhou Q, Zhao L, Higgins J, Leung LLK. Carboxypeptidase B2 and N play different roles in regulation of activated complements C3a and C5a in mice. J Thromb Haemost 2018; 16:991-1002. [PMID: 29383821 PMCID: PMC8491566 DOI: 10.1111/jth.13964] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Indexed: 12/24/2022]
Abstract
Essentials Two basic carboxypeptidases are present in plasma, B2 (CPB2) and N (CPN). Cpb2-/- and Cpn-/- mice were challenged in a hemolytic uremic syndrome (HUS) model vs. wild type. Cpb2-/- exacerbates HUS while Cpn-/- exacerbates cobra venom factor challenge vs. wild type mice. CPB2 and CPN have overlapping but non-redundant roles. SUMMARY Background There are two basic carboxypeptidases in plasma. Carboxypeptidase B2 (CPB2) is activated from a circulating zymogen, proCPB2, and carboxypeptidase N (CPN) is constitutively active with both inactivating complement C3a and C5a. Aims To test the roles of CPB2 and CPN in complement-driven mouse models of cobra venom factor (CVF) challenge and hemolytic-uremic syndrome (HUS). Methods Cpb2-/- , Cpn-/- and wild-type (WT) mice were compared in an HUS model induced by Shiga toxin and lipopolysaccharide administration and following CVF administration. Results HUS was exacerbated in Cpb2-/- mice more than in Cpn-/- mice, compared with WT mice. Cpb2-/- mice developed the HUS clinical triad of microangiopathic hemolytic anemia, uremia and thrombocytopenia. Treatment with anti-C5 antibody improved survival of both Cpb2-/- and Cpn-/- mice. In contrast, when challenged acutely with CVF, the reverse phenotype was observed. Cpn-/- mice had markedly worse disease than Cpb2-/- mice, whereas the WT mice were resistant. Conclusions CPN and CPB2 play overlapping but non-redundant roles in regulating complement activation in vivo. The constitutively active CPN is key for inactivation of systemic C5a, whereas CPB2 functions as an on-demand supplementary anaphylatoxin inhibitor in inactivating excessive C5a formed locally.
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Affiliation(s)
- J Morser
- Division of Hematology, Stanford University School of Medicine, Stanford, CA, USA
- Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA
| | - Z Shao
- Division of Hematology, Stanford University School of Medicine, Stanford, CA, USA
- Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA
| | - T Nishimura
- Division of Hematology, Stanford University School of Medicine, Stanford, CA, USA
- Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA
| | - Q Zhou
- Division of Hematology, Stanford University School of Medicine, Stanford, CA, USA
- Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA
| | - L Zhao
- Division of Hematology, Stanford University School of Medicine, Stanford, CA, USA
- Veterans Affairs Palo Alto Health Care System, Palo Alto, CA, USA
| | - J Higgins
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | - L L K Leung
- Division of Hematology, Stanford University School of Medicine, Stanford, CA, USA
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Piao C, Zhang WM, Li TT, Zhang CC, Qiu S, Liu Y, Liu S, Jin M, Jia LX, Song WC, Du J. Complement 5a stimulates macrophage polarization and contributes to tumor metastases of colon cancer. Exp Cell Res 2018; 366:127-138. [PMID: 29551360 DOI: 10.1016/j.yexcr.2018.03.009] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 03/05/2018] [Accepted: 03/06/2018] [Indexed: 01/29/2023]
Abstract
Inflammatory cells such as macrophages can play a pro-tumorigenic role in the tumor stroma. Tumor-associated macrophages (TAMs) generally display an M2 phenotype with tumor-promoting activity; however, the mechanisms regulating the TAM phenotype remain unclear. Complement 5a (C5a) is a cytokine-like polypeptide that is generated during complement system activation and is known to promote tumor growth. Herein, we investigated the role of C5a on macrophage polarization in colon cancer metastasis in mice. We found that deficiency of the C5a receptor (C5aR) severely impairs the metastatic ability of implanted colon cancer cells. C5aR was expressed on TAMs, which exhibited an M2-like functional profile in colon cancer liver metastatic lesions. Furthermore, C5a mediated macrophage polarization and this process relied substantially on activation of the nuclear factor-kappa B (NF-κB) pathway. Finally, analysis of human colon carcinoma indicated that C5aR expression is negatively associated with tumor differentiation grade. Our results demonstrate that C5aR has a central role in regulating the M2 phenotype of TAMs, which in turn, contributes to hepatic metastasis of colon cancer through NF-κB signaling. C5a is a potential novel marker for cancer prognosis and drugs targeting complement system activation, specifically the C5aR pathway, may offer new therapeutic opportunities for colon cancer management.
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Affiliation(s)
- Chunmei Piao
- Beijing Anzhen Hospital Affiliated to the Capital Medical University, Beijing 100029, China; The Key Laboratory of Remodeling-Related Cardiovascular Diseases, Capital Medical University, Ministry of Education, Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing collaborative innovative research center for cardiovascular diseases, Beijing 100029, China
| | - Wen-Mei Zhang
- Beijing Anzhen Hospital Affiliated to the Capital Medical University, Beijing 100029, China; The Key Laboratory of Remodeling-Related Cardiovascular Diseases, Capital Medical University, Ministry of Education, Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing collaborative innovative research center for cardiovascular diseases, Beijing 100029, China
| | - Tao-Tao Li
- Beijing Anzhen Hospital Affiliated to the Capital Medical University, Beijing 100029, China; The Key Laboratory of Remodeling-Related Cardiovascular Diseases, Capital Medical University, Ministry of Education, Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing collaborative innovative research center for cardiovascular diseases, Beijing 100029, China
| | - Cong-Cong Zhang
- Beijing Anzhen Hospital Affiliated to the Capital Medical University, Beijing 100029, China; The Key Laboratory of Remodeling-Related Cardiovascular Diseases, Capital Medical University, Ministry of Education, Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing collaborative innovative research center for cardiovascular diseases, Beijing 100029, China
| | - Shulan Qiu
- Beijing Anzhen Hospital Affiliated to the Capital Medical University, Beijing 100029, China; The Key Laboratory of Remodeling-Related Cardiovascular Diseases, Capital Medical University, Ministry of Education, Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing collaborative innovative research center for cardiovascular diseases, Beijing 100029, China
| | - Yan Liu
- Beijing Anzhen Hospital Affiliated to the Capital Medical University, Beijing 100029, China; The Key Laboratory of Remodeling-Related Cardiovascular Diseases, Capital Medical University, Ministry of Education, Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing collaborative innovative research center for cardiovascular diseases, Beijing 100029, China
| | - Sa Liu
- Beijing Anzhen Hospital Affiliated to the Capital Medical University, Beijing 100029, China; The Key Laboratory of Remodeling-Related Cardiovascular Diseases, Capital Medical University, Ministry of Education, Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing collaborative innovative research center for cardiovascular diseases, Beijing 100029, China
| | - Ming Jin
- Department of Biochemistry and Molecular Biology, College of Medicine, Yanbian University, Yanji, Jilin 133002, China
| | - Li-Xin Jia
- Beijing Anzhen Hospital Affiliated to the Capital Medical University, Beijing 100029, China; The Key Laboratory of Remodeling-Related Cardiovascular Diseases, Capital Medical University, Ministry of Education, Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing collaborative innovative research center for cardiovascular diseases, Beijing 100029, China
| | - Wen-Chao Song
- Beijing Anzhen Hospital Affiliated to the Capital Medical University, Beijing 100029, China; The Key Laboratory of Remodeling-Related Cardiovascular Diseases, Capital Medical University, Ministry of Education, Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing collaborative innovative research center for cardiovascular diseases, Beijing 100029, China; Department of Pharmacology and Institute for Translational Medicine and Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, United States.
| | - Jie Du
- Beijing Anzhen Hospital Affiliated to the Capital Medical University, Beijing 100029, China; The Key Laboratory of Remodeling-Related Cardiovascular Diseases, Capital Medical University, Ministry of Education, Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing collaborative innovative research center for cardiovascular diseases, Beijing 100029, China.
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Colley CS, Popovic B, Sridharan S, Debreczeni JE, Hargeaves D, Fung M, An L, Edwards B, Arnold J, England E, Eghobamien L, Sivars U, Flavell L, Renshaw J, Wickson K, Warrener P, Zha J, Bonnell J, Woods R, Wilkinson T, Dobson C, Vaughan TJ. Structure and characterization of a high affinity C5a monoclonal antibody that blocks binding to C5aR1 and C5aR2 receptors. MAbs 2018; 10:104-117. [PMID: 28952876 PMCID: PMC5800367 DOI: 10.1080/19420862.2017.1384892] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
C5a is a potent anaphylatoxin that modulates inflammation through the C5aR1 and C5aR2 receptors. The molecular interactions between C5a-C5aR1 receptor are well defined, whereas C5a-C5aR2 receptor interactions are poorly understood. Here, we describe the generation of a human antibody, MEDI7814, that neutralizes C5a and C5adesArg binding to the C5aR1 and C5aR2 receptors, without affecting complement-mediated bacterial cell killing. Unlike other anti-C5a mAbs described, this antibody has been shown to inhibit the effects of C5a by blocking C5a binding to both C5aR1 and C5aR2 receptors. The crystal structure of the antibody in complex with human C5a reveals a discontinuous epitope of 22 amino acids. This is the first time the epitope for an antibody that blocks C5aR1 and C5aR2 receptors has been described, and this work provides a basis for molecular studies aimed at further understanding the C5a-C5aR2 receptor interaction. MEDI7814 has therapeutic potential for the treatment of acute inflammatory conditions in which both C5a receptors may mediate inflammation, such as sepsis or renal ischemia-reperfusion injury.
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MESH Headings
- Antibodies, Monoclonal/chemistry
- Antibodies, Monoclonal/genetics
- Antibodies, Monoclonal/immunology
- Antibodies, Monoclonal/pharmacology
- Antibody Affinity
- Antibody Specificity
- Binding Sites, Antibody
- Complement C5a/antagonists & inhibitors
- Complement C5a/chemistry
- Complement C5a/immunology
- Complement C5a/metabolism
- Epitope Mapping/methods
- Epitopes
- HEK293 Cells
- Humans
- Protein Binding
- Protein Conformation
- Protein Engineering
- Receptor, Anaphylatoxin C5a/antagonists & inhibitors
- Receptor, Anaphylatoxin C5a/chemistry
- Receptor, Anaphylatoxin C5a/immunology
- Receptor, Anaphylatoxin C5a/metabolism
- Receptors, Chemokine/antagonists & inhibitors
- Receptors, Chemokine/chemistry
- Receptors, Chemokine/immunology
- Receptors, Chemokine/metabolism
- Structure-Activity Relationship
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Affiliation(s)
- Caroline S. Colley
- Antibody Discovery and Protein Engineering, MedImmune Ltd, Cambridge, UK
- CONTACT Caroline S. Colley Antibody Discovery and Protein Engineering, MedImmune Ltd, Granta Park, Cambridge, CB21 6GH, UK
| | - Bojana Popovic
- Antibody Discovery and Protein Engineering, MedImmune Ltd, Cambridge, UK
| | | | | | | | - Michael Fung
- Respiratory, Inflammation and Autoimmunity, MedImmune LLC, Gaithersburg, MD, USA
| | - Ling–Ling An
- Respiratory, Inflammation and Autoimmunity, MedImmune LLC, Gaithersburg, MD, USA
| | - Bryan Edwards
- Antibody Discovery and Protein Engineering, MedImmune Ltd, Cambridge, UK
| | - Joanne Arnold
- Antibody Discovery and Protein Engineering, MedImmune Ltd, Cambridge, UK
| | - Elizabeth England
- Antibody Discovery and Protein Engineering, MedImmune Ltd, Cambridge, UK
| | - Laura Eghobamien
- Respiratory, Inflammation and Autoimmunity, MedImmune Ltd, Cambridge, UK
| | - Ulf Sivars
- Translational Biology, IMED RIA Biotech Unit, AstraZeneca, Gothenburg, Sweden
| | - Liz Flavell
- Discovery Sciences, AstraZeneca R&D, Cambridge, UK
| | | | - Kate Wickson
- Discovery Sciences, AstraZeneca R&D, Cambridge, UK
| | - Paul Warrener
- Infectious Diseases, MedImmune LLC, Gaithersburg, MD, USA
| | - Jingying Zha
- Infectious Diseases, MedImmune LLC, Gaithersburg, MD, USA
| | | | - Rob Woods
- Antibody Discovery and Protein Engineering, MedImmune LLC, Gaithersburg, MD, USA
| | - Trevor Wilkinson
- Antibody Discovery and Protein Engineering, MedImmune Ltd, Cambridge, UK
| | - Claire Dobson
- Antibody Discovery and Protein Engineering, MedImmune Ltd, Cambridge, UK
| | - Tristan J. Vaughan
- Antibody Discovery and Protein Engineering, MedImmune Ltd, Cambridge, UK
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Zhu M, He X, Wang XH, Qiu W, Xing W, Guo W, An TC, Ao LQ, Hu XT, Li Z, Liu XP, Xiao N, Yu J, Huang H, Xu X. Complement C5a induces mesenchymal stem cell apoptosis during the progression of chronic diabetic complications. Diabetologia 2017; 60:1822-1833. [PMID: 28577176 DOI: 10.1007/s00125-017-4316-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 04/25/2017] [Indexed: 12/28/2022]
Abstract
AIMS/HYPOTHESIS Regeneration and repair mediated by mesenchymal stem cells (MSCs) are key self-protection mechanisms against diabetic complications, a reflection of diabetes-related cell/tissue damage and dysfunction. MSC abnormalities have been reported during the progression of diabetic complications, but little is known about whether a deficiency in these cells plays a role in the pathogenesis of this disease. In addition to MSC resident sites, peripheral circulation is a major source of MSCs that participate in the regeneration and repair of damaged tissue. Therefore, we investigated whether there is a deficiency of circulating MSC-like cells in people with diabetes and explored the underlying mechanisms. METHODS The abundance of MSC-like cells in peripheral blood was evaluated by FACS. Selected diabetic and non-diabetic serum (DS and NDS, respectively) samples were used to mimic diabetic and non-diabetic microenvironments, respectively. The proliferation and survival of MSCs under different serum conditions were analysed using several detection methods. The survival of MSCs in diabetic microenvironments was also investigated in vivo using leptin receptor mutant (Lepr db/db ) mice. RESULTS Our data showed a significant decrease in the abundance of circulating MSC-like cells, which was correlated with complications in individuals with type 2 diabetes. DS strongly impaired the proliferation and survival of culture-expanded MSCs through the complement system but not through exposure to high glucose levels. DS-induced MSC apoptosis was mediated, at least in part, by the complement C5a-dependent upregulation of Fas-associated protein with death domain (FADD) and the Bcl-2-associated X protein (BAX)/B cell lymphoma 2 (Bcl-2) ratio, which was significantly inhibited by neutralising C5a or by the pharmacological or genetic inhibition of the C5a receptor (C5aR) on MSCs. Moreover, blockade of the C5a/C5aR pathway significantly inhibited the apoptosis of transplanted MSCs in Lepr db/db recipient mice. CONCLUSIONS/INTERPRETATION C5a-dependent apoptotic death is probably involved in MSC deficiency and in the progression of complications in individuals with type 2 diabetes. Therefore, anticomplement therapy may be a novel intervention for diabetic complications.
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Affiliation(s)
- Ming Zhu
- First Department, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital and Research Institute of Surgery, Third Military Medical University, No. 10 Changjiang Branch Road, Daping Street, Yuzhong District, Chongqing, 400042, People's Republic of China
| | - Xiao He
- First Department, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital and Research Institute of Surgery, Third Military Medical University, No. 10 Changjiang Branch Road, Daping Street, Yuzhong District, Chongqing, 400042, People's Republic of China
| | - Xiao-Hui Wang
- First Department, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital and Research Institute of Surgery, Third Military Medical University, No. 10 Changjiang Branch Road, Daping Street, Yuzhong District, Chongqing, 400042, People's Republic of China
- Department of Histology and Embryology, Medical College of Qingdao University, Qingdao, People's Republic of China
| | - Wei Qiu
- First Department, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital and Research Institute of Surgery, Third Military Medical University, No. 10 Changjiang Branch Road, Daping Street, Yuzhong District, Chongqing, 400042, People's Republic of China
| | - Wei Xing
- First Department, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital and Research Institute of Surgery, Third Military Medical University, No. 10 Changjiang Branch Road, Daping Street, Yuzhong District, Chongqing, 400042, People's Republic of China
| | - Wei Guo
- First Department, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital and Research Institute of Surgery, Third Military Medical University, No. 10 Changjiang Branch Road, Daping Street, Yuzhong District, Chongqing, 400042, People's Republic of China
| | - Tian-Chen An
- First Department, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital and Research Institute of Surgery, Third Military Medical University, No. 10 Changjiang Branch Road, Daping Street, Yuzhong District, Chongqing, 400042, People's Republic of China
| | - Luo-Quan Ao
- First Department, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital and Research Institute of Surgery, Third Military Medical University, No. 10 Changjiang Branch Road, Daping Street, Yuzhong District, Chongqing, 400042, People's Republic of China
| | - Xue-Ting Hu
- First Department, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital and Research Institute of Surgery, Third Military Medical University, No. 10 Changjiang Branch Road, Daping Street, Yuzhong District, Chongqing, 400042, People's Republic of China
| | - Zhan Li
- First Department, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital and Research Institute of Surgery, Third Military Medical University, No. 10 Changjiang Branch Road, Daping Street, Yuzhong District, Chongqing, 400042, People's Republic of China
| | - Xiao-Ping Liu
- Department of Histology and Embryology, Medical College of Qingdao University, Qingdao, People's Republic of China
| | - Nan Xiao
- Ninth Department, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing, People's Republic of China
| | - Jian Yu
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
- University of Pittsburgh Cancer Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Hong Huang
- First Department, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital and Research Institute of Surgery, Third Military Medical University, No. 10 Changjiang Branch Road, Daping Street, Yuzhong District, Chongqing, 400042, People's Republic of China.
| | - Xiang Xu
- First Department, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital and Research Institute of Surgery, Third Military Medical University, No. 10 Changjiang Branch Road, Daping Street, Yuzhong District, Chongqing, 400042, People's Republic of China.
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Bergdolt S, Kovtun A, Hägele Y, Liedert A, Schinke T, Amling M, Huber-Lang M, Ignatius A. Osteoblast-specific overexpression of complement receptor C5aR1 impairs fracture healing. PLoS One 2017; 12:e0179512. [PMID: 28614388 PMCID: PMC5470759 DOI: 10.1371/journal.pone.0179512] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 05/30/2017] [Indexed: 01/08/2023] Open
Abstract
The anaphylatoxin receptor C5aR1 plays an important role not only in innate immune responses, but also in bone metabolism and fracture healing, being highly expressed on immune and bone cells, including osteoblasts and osteoclasts. C5aR1 induces osteoblast migration, cytokine generation and osteoclastogenesis, however, the exact role of C5aR1-mediated signaling in osteoblasts is not entirely known. Therefore, we hypothesized that osteoblasts are essential target cells for C5a and that fracture healing should be disturbed in mice with an osteoblast-specific C5aR1 overexpression (Col1a1-C5aR1). Osteoblast activity in vitro, bone phenotype and fracture healing after isolated osteotomy and after combined osteotomy with additional thoracic trauma were analyzed. The systemic and local inflammatory reactions were analyzed by determining C5a and IL-6 concentrations in blood, bronchoalveolar lavage fluid and fracture callus and the recruitment of immune cells. In vitro, osteoblast proliferation and differentiation were similar to wildtype cells, and phosphorylation of p38 and expression of IL-6 and RANKL were increased in osteoblasts derived from Col1a1-C5aR1 mice. Bone phenotype and the inflammatory reaction were unaffected in Col1a1-C5aR1 mice. Fracture healing was significantly impaired as demonstrated by significantly reduced bone content, bone mineral density and flexural rigidity, possibly due to significantly increased osteoclast numbers. C5aR1 signaling in osteoblasts might possibly affect RANKL/OPG balance, leading to increased bone resorption. Additional trauma significantly impaired fracture healing, particularly in Col1a1-C5aR1 mice. In conclusion, the data indicate that C5aR1 signaling in osteoblasts plays a detrimental role in bone regeneration after fracture.
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Affiliation(s)
- Stephanie Bergdolt
- Institute of Orthopedic Research and Biomechanics, University of Ulm, Ulm, Germany
| | - Anna Kovtun
- Institute of Orthopedic Research and Biomechanics, University of Ulm, Ulm, Germany
| | - Yvonne Hägele
- Institute of Orthopedic Research and Biomechanics, University of Ulm, Ulm, Germany
| | - Astrid Liedert
- Institute of Orthopedic Research and Biomechanics, University of Ulm, Ulm, Germany
| | - Thorsten Schinke
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Michael Amling
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Markus Huber-Lang
- Institute of Clinical and Experimental Traumaimmunology, University of Ulm, Ulm, Germany
| | - Anita Ignatius
- Institute of Orthopedic Research and Biomechanics, University of Ulm, Ulm, Germany
- * E-mail:
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50
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Wang YM, Cao B. [The role of C5a in acute lung injury associated with severe community acquired pneumonia]. Zhonghua Jie He He Hu Xi Za Zhi 2017; 40:297-299. [PMID: 28395411 DOI: 10.3760/cma.j.issn.1001-0939.2017.04.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
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