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Kim Y, Kim G, Min G, Woo Y, Peck KR, Hong JJ, Kim SB. Age-related antibody response to Orthopoxviruses and implications for public health measures: Insights from a South Korean study. J Infect Public Health 2024; 17:956-960. [PMID: 38608456 DOI: 10.1016/j.jiph.2024.04.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 03/27/2024] [Accepted: 04/03/2024] [Indexed: 04/14/2024] Open
Abstract
BACKGROUND After the eradication of smallpox, there have been no specific public health measures for any Orthopoxviruses (OPXVs). Therefore, it is necessary to countermeasure OPXV infections after Mpox (formerly monkeypox) occurrences, such as the latest global outbreak in 2022-2023. This study aimed to provide crucial insights for the development of effective public health policy making against mpox in populations residing in regions where the virus is not prevalent. METHODS This study used enzyme-linked immunosorbent assays (ELISA) to examine smallpox and mpox antibodies in Koreans with three different age groups. We analyzed 56 sera obtained from a tertiary care hospital in South Korea between September 2022 and April 2023. Plasma levels of antibodies against the viral proteins of smallpox (variola cytokine response-modifying protein B) and MPXV (A29) were measured using enzyme-linked immunosorbent assays. RESULTS Plasma samples from participants in their early 40 s and older exhibited higher reactivity to viral antigens than those from younger participants. Furthermore, there was a strong positive correlation in antibody positivity for the two different viruses across the sera. CONCLUSIONS The presence of low antibody levels in participants ˂40 years may hinder their ability to defend against OPXV. Therefore, it is imperative to implement effective public health measures to mitigate the transmission of OPXV within the community. These findings serve as fundamental information for devising strategies to combat mpox efficiently, particularly in regions where the virus is not prevalent.
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Affiliation(s)
- Yujin Kim
- National Primate Research Centre, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju, Chungcheongbuk, South Korea
| | - Green Kim
- National Primate Research Centre, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju, Chungcheongbuk, South Korea
| | - Gukhui Min
- National Primate Research Centre, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju, Chungcheongbuk, South Korea; KRIBB School of Bioscience, Korea University of Science & Technology (UST), Daejeon, South Korea
| | - YoungMin Woo
- National Primate Research Centre, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju, Chungcheongbuk, South Korea; KRIBB School of Bioscience, Korea University of Science & Technology (UST), Daejeon, South Korea
| | - Kyong Ran Peck
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Jung Joo Hong
- National Primate Research Centre, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Cheongju, Chungcheongbuk, South Korea; KRIBB School of Bioscience, Korea University of Science & Technology (UST), Daejeon, South Korea.
| | - Sun Bean Kim
- Division of Infectious Diseases, Department of Internal Medicine, Korea University Anam Hospital, Seoul, South Korea.
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Mouliou DS. John Cunningham Virus and Progressive Multifocal Leukoencephalopathy: A Falsely Played Diagnosis. Diseases 2024; 12:100. [PMID: 38785755 PMCID: PMC11120163 DOI: 10.3390/diseases12050100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Revised: 05/09/2024] [Accepted: 05/09/2024] [Indexed: 05/25/2024] Open
Abstract
Progressive Multifocal Leukoencephalopathy (PML) is a possibly fatal demyelinating disease and John Cunningham Polyomavirus (JCPyV) is believed to cause this condition. The so-called JCPyV was initially reported in lymphoma and Human Immunodeficiency Virus (HIV) cases, whereas nowadays, its incidence is increasing in Multiple Sclerosis (MS) cases treated with natalizumab (Tysabri). However, there are conflicting literature data on its pathology and diagnosis, whereas some misdiagnosed reports exist, giving rise to further questions towards the topic. In reality, the so-called PML and the supposed JCPyV are not what they seem to be. In addition, novel and more frequent PML-like conditions may be reported, especially after the Coronavirus Disease 2019 (COVID-19) pandemic.
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Curvino EJ, Roe EF, Freire Haddad H, Anderson AR, Woodruff ME, Votaw NL, Segura T, Hale LP, Collier JH. Engaging natural antibody responses for the treatment of inflammatory bowel disease via phosphorylcholine-presenting nanofibres. Nat Biomed Eng 2024; 8:628-649. [PMID: 38012308 PMCID: PMC11128482 DOI: 10.1038/s41551-023-01139-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 10/17/2023] [Indexed: 11/29/2023]
Abstract
Inflammatory bowel disease lacks a long-lasting and broadly effective therapy. Here, by taking advantage of the anti-infection and anti-inflammatory properties of natural antibodies against the small-molecule epitope phosphorylcholine (PC), we show in multiple mouse models of colitis that immunization of the animals with self-assembling supramolecular peptide nanofibres bearing PC epitopes induced sustained levels of anti-PC antibodies that were both protective and therapeutic. The strength and type of immune responses elicited by the nanofibres could be controlled through the relative valency of PC epitopes and exogenous T-cell epitopes on the nanofibres and via the addition of the adjuvant CpG. The nanomaterial-assisted induction of the production of therapeutic antibodies may represent a durable therapy for inflammatory bowel disease.
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Affiliation(s)
| | - Emily F Roe
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
| | | | - Alexa R Anderson
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
| | - Mia E Woodruff
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
| | - Nicole L Votaw
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
| | - Tatiana Segura
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
| | - Laura P Hale
- Department of Pathology, Duke University Medical Center, Durham, NC, USA
| | - Joel H Collier
- Department of Biomedical Engineering, Duke University, Durham, NC, USA.
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4
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Mara AB, Rawat K, King WT, Jakubzick CV. Natural antibodies drive type 2 immunity in response to damage-associated molecular patterns. JCI Insight 2024; 9:e177230. [PMID: 38470489 PMCID: PMC11141869 DOI: 10.1172/jci.insight.177230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 03/07/2024] [Indexed: 03/13/2024] Open
Abstract
Allergic airway disease (AAD) is an example of type 2 inflammation that leads to chronic airway eosinophilia controlled by CD4 Th2 cells. Inflammation is reinforced by mast cells and basophils armed with allergen-specific IgE made by allergen-specific B2 B cells of the adaptive immune system. Little is known about how AAD is affected by innate B1 cells, which produce natural antibodies (NAbs) that facilitate apoptotic cell clearance and detect damage- and pathogen-associated molecular patterns (DAMPS and PAMPS). We used transgenic mice lacking either B cells or NAbs in distinct mouse models of AAD that require either DAMPS or PAMPS as the initial trigger for type 2 immunity. In a DAMP-induced allergic model, driven by alum and uric acid, mouse strains lacking B cells (CD19DTA), NAbs (IgHEL MD4), or all secreted antibodies (sIgm-/-Aid-/-) displayed a significant reduction in both eosinophilia and Th2 priming compared with WT or Aid-/- mice lacking only germinal center-dependent high-affinity class-switched antibodies. Replenishing B cell-deficient mice with either unimmunized B1 B cells or NAbs during sensitization restored eosinophilia, suggesting that NAbs are required for licensing antigen-presenting cells to prime type 2 immunity. Conversely, PAMP-dependent type 2 priming to house dust mite or Aspergillus was not dependent on NAbs. This study reveals an underappreciated role of B1 B cell-generated NAbs in selectively driving DAMP-induced type 2 immunity.
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5
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Rohm F, Kling E, Hoffmann R, Meisinger C, Linseisen J. Prevalence of a large panel of systemic autoantibodies in the Bavarian adult population. Front Immunol 2024; 15:1355905. [PMID: 38390318 PMCID: PMC10881743 DOI: 10.3389/fimmu.2024.1355905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 01/24/2024] [Indexed: 02/24/2024] Open
Abstract
Objective Autoimmune diseases commonly feature the presence of specific humoral autoantibodies. However, the prevalence of a large panel of systemic autoantibodies has never been assessed in the general population. We, therefore, described the prevalence of about 50 humoral systemic autoantibodies in a sample of the general Bavarian adult population. Methods Non-fasting venous serum samples from 331 participants were analyzed for 7 autoantibody screening tests (nuclear, cytoplasmic, and mitotic ANA, ANCA, cANCA and pANCA, anti-ENA autoantibodies) and 44 different monospecific humoral non-organ specific/systemic autoantibodies using indirect immunofluorescence tests, ELISAs, and line blots. In order to assess associations between sex, age, BMI, education level, smoking status and the presence of systemic autoantibodies, logistic regression analyses were conducted. Results At least one screening test was positive in 29.9% of the participants, and 42.3% of the participants were seropositive for at least one monospecific autoantibody. The most frequently found monospecific autoantibodies were rheumatoid factor (35.6%), ß2-glycoprotein 1 IgM (4.8%), and cardiolipin IgG (1.8%). Only few associations between sex, age, BMI, education, smoking status and autoantibody frequencies were observed. Conclusion Systemic autoantibodies are common in the general Bavarian population, and largely independent of sex, age, BMI, education, or smoking status. The study results may give orientation to clinicians about the occurrence of autoantibodies in the population, not (yet) associated with clinical symptoms.
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Affiliation(s)
- Florian Rohm
- Epidemiology, Medical Faculty, University of Augsburg, Augsburg, Germany
| | - Elisabeth Kling
- Institute for Laboratory Medicine and Microbiology, University Hospital Augsburg, Augsburg, Germany
| | - Reinhard Hoffmann
- Institute for Laboratory Medicine and Microbiology, University Hospital Augsburg, Augsburg, Germany
| | | | - Jakob Linseisen
- Epidemiology, Medical Faculty, University of Augsburg, Augsburg, Germany
- Institute for Medical Information Processing, Biometry, and Epidemiology (IBE), Ludwig-Maximilians-Universität München, München, Germany
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Zhang D, Kukkar D, Kim KH, Bhatt P. A comprehensive review on immunogen and immune-response proteins of SARS-CoV-2 and their applications in prevention, diagnosis, and treatment of COVID-19. Int J Biol Macromol 2024; 259:129284. [PMID: 38211928 DOI: 10.1016/j.ijbiomac.2024.129284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 01/03/2024] [Accepted: 01/04/2024] [Indexed: 01/13/2024]
Abstract
Exposure to severe acute respiratory syndrome-corona virus-2 (SARS-CoV-2) prompts humoral immune responses in the human body. As the auxiliary diagnosis of a current infection, the existence of viral proteins can be checked from specific antibodies (Abs) induced by immunogenic viral proteins. For people with a weakened immune system, Ab treatment can help neutralize viral antigens to resist and treat the disease. On the other hand, highly immunogenic viral proteins can serve as effective markers for detecting prior infections. Additionally, the identification of viral particles or the presence of antibodies may help establish an immune defense against the virus. These immunogenic proteins rather than SARS-CoV-2 can be given to uninfected people as a vaccination to improve their coping ability against COVID-19 through the generation of memory plasma cells. In this work, we review immunogenic and immune-response proteins derived from SARS-CoV-2 with regard to their classification, origin, and diverse applications (e.g., prevention (vaccine development), diagnostic testing, and treatment (via neutralizing Abs)). Finally, advanced immunization strategies against COVID-19 are discussed along with the contemporary circumstances and future challenges.
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Affiliation(s)
- Daohong Zhang
- College of Food Engineering, Ludong University, Yantai 264025, Shandong, China; Bio-Nanotechnology Research Institute, Ludong University, Yantai 264025, Shandong, China
| | - Deepak Kukkar
- Department of Biotechnology, Chandigarh University, Gharuan, Mohali 140413, Punjab, India; University Center for Research and Development, Chandigarh University, Gharuan, Mohali 140413, Punjab, India
| | - Ki-Hyun Kim
- Department of Civil & Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea.
| | - Poornima Bhatt
- Department of Biotechnology, Chandigarh University, Gharuan, Mohali 140413, Punjab, India; University Center for Research and Development, Chandigarh University, Gharuan, Mohali 140413, Punjab, India
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7
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Simon D, Erdő-Bonyár S, Böröcz K, Balázs N, Badawy A, Bajnok A, Nörenberg J, Serény-Litvai T, Várnagy Á, Kovács K, Hantosi E, Mezősi E, Németh P, Berki T. Altered Levels of Natural Autoantibodies against Heat Shock Proteins in Pregnant Women with Hashimoto's Thyroiditis. Int J Mol Sci 2024; 25:1423. [PMID: 38338701 PMCID: PMC10855109 DOI: 10.3390/ijms25031423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/19/2024] [Accepted: 01/21/2024] [Indexed: 02/12/2024] Open
Abstract
The function of natural autoantibodies (nAAbs) in maintaining immunological tolerance has been comprehensively explained; however, their function in pregnant patients dealing with autoimmune diseases has not been thoroughly investigated. As Hashimoto's thyroiditis (HT) is the predominant organ-specific autoimmune condition of women of childbearing age, this study's objective was to evaluate IgM and IgG nAAbs targeting mitochondrial citrate synthase (CS) and heat shock proteins (Hsp60 and Hsp70) in women diagnosed with HT who were pregnant (HTP). Serum samples collected from HTP and healthy pregnant (HP) women in the first and third trimesters were tested using in-house-developed enzyme-linked immunosorbent assays (ELISAs). Our findings indicate the stability of nAAbs against CS and Hsps throughout the pregnancies of both healthy women and those with HT. However, during both trimesters, HTP patients displayed elevated levels of IgM isotype nAAbs against Hsp60 and Hsp70 compared to HP women, suggesting a regulatory role of IgM nAAbs during the pregnancies of patients with HT. Nonetheless, levels of IgG isotype nAAbs against Hsps were lower solely in the third trimester among HTP patients, resulting in a higher IgM/IgG ratio, which indicates their importance in alterations of the nAAb network during pregnancy in patients with HT.
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Affiliation(s)
- Diána Simon
- Department of Immunology and Biotechnology, Clinical Center, Medical School, University of Pécs, 7624 Pécs, Hungary
- National Laboratory on Human Reproduction, University of Pécs, 7624 Pécs, Hungary
| | - Szabina Erdő-Bonyár
- Department of Immunology and Biotechnology, Clinical Center, Medical School, University of Pécs, 7624 Pécs, Hungary
- National Laboratory on Human Reproduction, University of Pécs, 7624 Pécs, Hungary
| | - Katalin Böröcz
- Department of Immunology and Biotechnology, Clinical Center, Medical School, University of Pécs, 7624 Pécs, Hungary
| | - Noémi Balázs
- Department of Immunology and Biotechnology, Clinical Center, Medical School, University of Pécs, 7624 Pécs, Hungary
- National Laboratory on Human Reproduction, University of Pécs, 7624 Pécs, Hungary
| | - Ahmed Badawy
- Department of Immunology and Biotechnology, Clinical Center, Medical School, University of Pécs, 7624 Pécs, Hungary
- National Laboratory on Human Reproduction, University of Pécs, 7624 Pécs, Hungary
| | - Anna Bajnok
- National Laboratory on Human Reproduction, University of Pécs, 7624 Pécs, Hungary
- Szentágothai Research Centre, University of Pécs, 7624 Pécs, Hungary
- Department of Obstetrics and Gynecology, Clinical Center, Medical School, University of Pécs, 7624 Pécs, Hungary
| | - Jasper Nörenberg
- National Laboratory on Human Reproduction, University of Pécs, 7624 Pécs, Hungary
- Department of Obstetrics and Gynecology, Clinical Center, Medical School, University of Pécs, 7624 Pécs, Hungary
| | - Tímea Serény-Litvai
- Department of Immunology and Biotechnology, Clinical Center, Medical School, University of Pécs, 7624 Pécs, Hungary
- National Laboratory on Human Reproduction, University of Pécs, 7624 Pécs, Hungary
- Szentágothai Research Centre, University of Pécs, 7624 Pécs, Hungary
| | - Ákos Várnagy
- National Laboratory on Human Reproduction, University of Pécs, 7624 Pécs, Hungary
- Department of Obstetrics and Gynecology, Clinical Center, Medical School, University of Pécs, 7624 Pécs, Hungary
| | - Kálmán Kovács
- National Laboratory on Human Reproduction, University of Pécs, 7624 Pécs, Hungary
- Department of Obstetrics and Gynecology, Clinical Center, Medical School, University of Pécs, 7624 Pécs, Hungary
| | - Eszter Hantosi
- Department of Obstetrics and Gynecology, Clinical Center, Medical School, University of Pécs, 7624 Pécs, Hungary
| | - Emese Mezősi
- National Laboratory on Human Reproduction, University of Pécs, 7624 Pécs, Hungary
- First Department of Internal Medicine, Clinical Center, Medical School, University of Pécs, 7624 Pécs, Hungary
| | - Péter Németh
- Department of Immunology and Biotechnology, Clinical Center, Medical School, University of Pécs, 7624 Pécs, Hungary
- National Laboratory on Human Reproduction, University of Pécs, 7624 Pécs, Hungary
| | - Tímea Berki
- Department of Immunology and Biotechnology, Clinical Center, Medical School, University of Pécs, 7624 Pécs, Hungary
- National Laboratory on Human Reproduction, University of Pécs, 7624 Pécs, Hungary
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Cormier M, Burnett E, Mo A, Notley C, Tijet N, Christie-Holmes N, Hough C, Lillicrap D. Mice possess a more limited natural antihuman factor VIII antibody repertoire than humans that is produced disproportionately by marginal zone B cells. J Thromb Haemost 2024; 22:76-89. [PMID: 37678547 PMCID: PMC10872961 DOI: 10.1016/j.jtha.2023.08.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 08/22/2023] [Accepted: 08/30/2023] [Indexed: 09/09/2023]
Abstract
BACKGROUND One-third of patients with severe hemophilia A develop neutralizing antibodies to the factor VIII (FVIII) protein in response to intravenous replacement therapy. Patients may also generate natural, nonneutralizing antibodies to FVIII before FVIII exposure. These patients are at increased risk of developing neutralizing antibodies to FVIII. However, natural anti-FVIII antibodies are also present in healthy human donors. OBJECTIVES To further characterize the natural antihuman (h) FVIII antibody repertoire in mice and humans. METHODS An in-house ELISA was developed using a purified polyclonal immunoglobulin (Ig) standard to quantify anti-hFVIII Ig in cell culture supernatant or plasma from mice (wild-type and FVIII-/-) and adult human donors. RESULTS All naïve wild-type and FVIII-/- mice, as well as healthy human donors, possess natural anti-hFVIII antibodies. Mice only have natural anti-hFVIII IgM, which is present in germ-free mice, suggesting that they are germline encoded. Although murine marginal zone B cells (MZBs) contribute 44% to all circulating natural IgM, they contribute disproportionately to the anti-hFVIII IgM repertoire (82%). This naturally occurring murine MZB-derived IgM is not B-domain specific and is reduced by intravenously administered hFVIII, suggesting that it may form immune complexes immediately upon hFVIII administration. Natural anti-hFVIII antibodies of IgG, IgM, and IgA isotypes can be detected in adult human donors. There were increased levels of B-domain-favoring anti-hFVIII IgG in 14% of healthy donors, which were markedly different from the rest of the "low-titer" population. CONCLUSIONS There is a preponderance of natural anti-hFVIII antibodies in both mice and healthy adult human donors.
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Affiliation(s)
- Matthew Cormier
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada.
| | - Erin Burnett
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada
| | - Aomei Mo
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada
| | - Colleen Notley
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada
| | - Nathalie Tijet
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada
| | - Natasha Christie-Holmes
- Emerging & Pandemic Infections Consortium, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Christine Hough
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada
| | - David Lillicrap
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, Ontario, Canada.
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Ray ME, Rothstein TL. Human VH4-34 antibodies derived from B1 cells are more frequently autoreactive than VH4-34 antibodies derived from memory cells. Front Immunol 2023; 14:1259827. [PMID: 38162664 PMCID: PMC10754998 DOI: 10.3389/fimmu.2023.1259827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Accepted: 11/20/2023] [Indexed: 01/03/2024] Open
Abstract
Human B1 cells produce natural antibodies characterized by overutilization of heavy chain variable region VH4-34 in comparison to other B cell populations. VH4-34-containing antibodies have been reported to be autoreactive and to be associated with lupus and other autoimmune dyscrasias. However, it has been unclear to what extent VH4-34 antibodies manifest autoreactivity in B1 cells or other B cell populations-in other words, are VH4-34 containing antibodies autoreactive wherever found, or mainly within the B1 cell population? To address this issue we sort purified single human B1 and memory B cells and then amplified, sequenced, cloned and expressed VH4-34-containing antibodies from 76 individual B cells. Each of these antibodies was tested for autoreactivity by HEp-2 IFA and autoantigen ELISA. Antibodies were scored as autoreactive if positive by either assay. We found VH4-34 antibodies rescued from B1 cells were much more frequently autoreactive (14/48) than VH4-34 antibodies rescued from memory B cells (2/28). Among B1 cell antibodies, 4 were HEp-2+, 6 were dsDNA+ and 4 were positive for both. Considering only HEp-2+ antibodies, again these were found more frequently among B1 cell VH4-34 antibodies (8/48) than memory B cell VH4-34 antibodies (1/28). We found autoreactivity was associated with greater CDR3 length, as expected; however, we found no association between autoreactivity and a previously described FR1 "hydrophobic patch". Our results indicate that autoreactive VH4-34-containing antibodies tend to reside within the human B1 cell population.
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Affiliation(s)
| | - Thomas L. Rothstein
- Center for Immunobiology and Department of Investigative Medicine, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, MI, United States
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10
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Wang J, Lundström SL, Lu W, Huang Y, Rodin S, Zubarev RA. SpotLight proteomics identifies variable sequences of blood antibodies specific against deamidated human serum albumin. Mol Cell Proteomics 2023:100589. [PMID: 37301377 PMCID: PMC10345337 DOI: 10.1016/j.mcpro.2023.100589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 05/23/2023] [Accepted: 06/07/2023] [Indexed: 06/12/2023] Open
Abstract
Spontaneous deamidation of asparaginyl residues in proteins, if not repaired or cleared, can set in motion a cascade that leads to deteriorated health. Previously, we have discovered that deamidated human serum albumin (HSA) is elevated in blood of patients with Alzheimer's disease and other neurodegenerative diseases, while the level of endogenous antibodies against deamidated HSA is significantly diminished, creating an imbalance between the risk factor and the defense against it. Endogenous antibodies against deamidated proteins are still unexplored. In the current study, we employed the SpotLight proteomics approach to identify novel amino acid sequences in antibodies specific to deamidated HSA. The results provide new insights into the clearance mechanism of deamidated proteins, a possible avenue for prevention of neurodegeneration.
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Affiliation(s)
- Jijing Wang
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-17 165 Stockholm, Sweden
| | - Susanna L Lundström
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-17 165 Stockholm, Sweden
| | - Weiqi Lu
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-17 165 Stockholm, Sweden; Department of Ophthalmology, First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China
| | - Yiqi Huang
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-17 165 Stockholm, Sweden; Institute of Virology, School of Medicine, Technical University of Munich, Munich, Germany
| | - Sergey Rodin
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-17 165 Stockholm, Sweden; Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
| | - Roman A Zubarev
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-17 165 Stockholm, Sweden.
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11
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Gál S, Gajdócsi E, Khanfar E, Olasz K, Simon D, Balogh P, Berki T, Németh P, Boldizsár F. Natural and Pathological Autoantibodies Show Age-Related Changes in a Spontaneous Autoimmune Mouse (NZB) Model. Int J Mol Sci 2023; 24:9809. [PMID: 37372957 DOI: 10.3390/ijms24129809] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 05/30/2023] [Accepted: 06/02/2023] [Indexed: 06/29/2023] Open
Abstract
The natural autoantibody (natAAb) network is thought to play a role in immune regulation. These IgM antibodies react with evolutionary conserved antigens; however, they do not lead to pathological tissue destruction as opposed to pathological autoantibodies (pathAAb). The exact relation between the natAAbs and pathAAbs is still not completely understood; therefore, in the present study, we set out to measure nat- and pathAAb levels against three conserved antigens in a spontaneous autoimmune disease model: the NZB mouse strain which develops autoimmune hemolytic anemia (AIHA) from six months of age. There was an age dependent increase in the natAAb levels in the serum against Hsp60, Hsp70, and the mitochondrial citrate synthase until 6-9 months of age, followed by a gradual decrease. The pathological autoantibodies appeared after six months of age, which corresponded with the appearance of the autoimmune disease. The changes in nat/pathAAb levels were coupled with decreasing B1- and increasing plasma cell and memory B cell percentages. Based on this, we propose that there is a switch from natAAbs towards pathAAbs in aged NZB mice.
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Affiliation(s)
- Szonja Gál
- Department of Immunology and Biotechnology, Medical School, University of Pecs, H-7624 Pécs, Hungary
| | - Erzsébet Gajdócsi
- Department of Immunology and Biotechnology, Medical School, University of Pecs, H-7624 Pécs, Hungary
| | - Esam Khanfar
- Department of Immunology and Biotechnology, Medical School, University of Pecs, H-7624 Pécs, Hungary
| | - Katalin Olasz
- Department of Immunology and Biotechnology, Medical School, University of Pecs, H-7624 Pécs, Hungary
| | - Diána Simon
- Department of Immunology and Biotechnology, Medical School, University of Pecs, H-7624 Pécs, Hungary
| | - Péter Balogh
- Department of Immunology and Biotechnology, Medical School, University of Pecs, H-7624 Pécs, Hungary
- Lymphoid Organogenesis Research Group, Szentagothai Research Center, University of Pecs, H-7624 Pécs, Hungary
| | - Tímea Berki
- Department of Immunology and Biotechnology, Medical School, University of Pecs, H-7624 Pécs, Hungary
| | - Péter Németh
- Department of Immunology and Biotechnology, Medical School, University of Pecs, H-7624 Pécs, Hungary
| | - Ferenc Boldizsár
- Department of Immunology and Biotechnology, Medical School, University of Pecs, H-7624 Pécs, Hungary
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12
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Quiros-Roldan E, Sottini A, Signorini SG, Serana F, Tiecco G, Imberti L. Autoantibodies to Interferons in Infectious Diseases. Viruses 2023; 15:v15051215. [PMID: 37243300 DOI: 10.3390/v15051215] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 05/18/2023] [Accepted: 05/19/2023] [Indexed: 05/28/2023] Open
Abstract
Anti-cytokine autoantibodies and, in particular, anti-type I interferons are increasingly described in association with immunodeficient, autoimmune, and immune-dysregulated conditions. Their presence in otherwise healthy individuals may result in a phenotype characterized by a predisposition to infections with several agents. For instance, anti-type I interferon autoantibodies are implicated in Coronavirus Disease 19 (COVID-19) pathogenesis and found preferentially in patients with critical disease. However, autoantibodies were also described in the serum of patients with viral, bacterial, and fungal infections not associated with COVID-19. In this review, we provide an overview of anti-cytokine autoantibodies identified to date and their clinical associations; we also discuss whether they can act as enemies or friends, i.e., are capable of acting in a beneficial or harmful way, and if they may be linked to gender or immunosenescence. Understanding the mechanisms underlying the production of autoantibodies could improve the approach to treating some infections, focusing not only on pathogens, but also on the possibility of a low degree of autoimmunity in patients.
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Affiliation(s)
- Eugenia Quiros-Roldan
- Department of Infectious and Tropical Diseases, ASST Spedali Civili, Brescia and University of Brescia, 25123 Brescia, Italy
| | - Alessandra Sottini
- Clinical Chemistry Laboratory, ASST Spedali Civili of Brescia, 25123 Brescia, Italy
| | | | - Federico Serana
- Clinical Chemistry Laboratory, ASST Spedali Civili of Brescia, 25123 Brescia, Italy
| | - Giorgio Tiecco
- Department of Infectious and Tropical Diseases, ASST Spedali Civili, Brescia and University of Brescia, 25123 Brescia, Italy
| | - Luisa Imberti
- Section of Microbiology, University of Brescia, P. le Spedali Civili, 1, 25123 Brescia, Italy
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Kulik L, Renner B, Laskowski J, Thurman JM, Michael Holers V. Highly pathogenic natural monoclonal antibody B4-IgM recognizes a post-translational modification comprised of acetylated N-terminal methionine followed by aspartic or glutamic acid. Mol Immunol 2023; 157:112-128. [PMID: 37018938 DOI: 10.1016/j.molimm.2023.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 02/20/2023] [Accepted: 03/02/2023] [Indexed: 04/05/2023]
Abstract
The natural monoclonal antibody B4-IgM recognizes murine annexin 4 (mAn4) and exacerbates ischemia-reperfusion injury in many mouse models. During apoptosis, the intracellular mAn4 protein translocates to the membrane surface, remaining attached to the outer membrane leaflet where it is recognized by the anti-mAn4 B4-IgM antibody. B4-IgM does not recognize human annexin 4 (hAn4). However, the B4-IgM antibody epitope was detected by Western blot of unknown human proteins and by flow cytometry on all studied human cell lines undergoing apoptosis and on a minor subset of healthy cells. The B4-IgM antibody also recognizes the epitope on necrotic cells in cytoplasmic proteins, apparently entering through pores large enough to allow natural antibodies to penetrate the cells and bind to the epitope expressed on self-proteins. Using proteomics and site-directed mutagenesis, we found that B4-IgM binds to an epitope with post-translationally modified acetylated N-terminal methionine, followed by either glutamic or aspartic acid. The epitope is not induced by apoptosis or injury because this modification can also occur during protein translation. This finding reveals an additional novel mechanism whereby injured cells are detected by natural antibodies that initiate pathogenic complement activation through the recognition of epitopes that are shared across multiple proteins found in variable cell lines.
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14
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Kibler A, Seifert M, Budeus B. Age-related changes of the human splenic marginal zone B cell compartment. Immunol Lett 2023; 256-257:59-65. [PMID: 37044264 DOI: 10.1016/j.imlet.2023.04.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 03/24/2023] [Accepted: 04/07/2023] [Indexed: 04/14/2023]
Abstract
In this review, we will summarize the growing body of knowledge on the age-related changes of human splenic B cell composition and molecular evidence of immune maturation and discuss the contribution of these changes on splenic protective function. From birth on, the splenic marginal zone (sMZ) contains a specialized B cell subpopulation, which recruits and archives memory B cells from immune responses throughout the organism. The quality of sMZ B cell responses is augmented by germinal center (GC)-dependent maturation of memory B cells during childhood, however, in old age, these mechanisms likely contribute to waning of splenic protective function.
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Affiliation(s)
- Artur Kibler
- Institute of Cell Biology (Cancer Research), University of Duisburg-Essen, Essen, Germany
| | - Marc Seifert
- Institute of Cell Biology (Cancer Research), University of Duisburg-Essen, Essen, Germany; Department of Hematology, Oncology and Clinical Immunology, Heinrich-Heine University, Düsseldorf, Germany.
| | - Bettina Budeus
- Institute of Cell Biology (Cancer Research), University of Duisburg-Essen, Essen, Germany
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15
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Zhang Y, Li Q, Luo L, Duan C, Shen J, Wang Z. Application of germline antibody features to vaccine development, antibody discovery, antibody optimization and disease diagnosis. Biotechnol Adv 2023; 65:108143. [PMID: 37023966 DOI: 10.1016/j.biotechadv.2023.108143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 03/26/2023] [Accepted: 03/29/2023] [Indexed: 04/08/2023]
Abstract
Although the efficacy and commercial success of vaccines and therapeutic antibodies have been tremendous, designing and discovering new drug candidates remains a labor-, time- and cost-intensive endeavor with high risks. The main challenges of vaccine development are inducing a strong immune response in broad populations and providing effective prevention against a group of highly variable pathogens. Meanwhile, antibody discovery faces several great obstacles, especially the blindness in antibody screening and the unpredictability of the developability and druggability of antibody drugs. These challenges are largely due to poorly understanding of germline antibodies and the antibody responses to pathogen invasions. Thanks to the recent developments in high-throughput sequencing and structural biology, we have gained insight into the germline immunoglobulin (Ig) genes and germline antibodies and then the germline antibody features associated with antigens and disease manifestation. In this review, we firstly outline the broad associations between germline antibodies and antigens. Moreover, we comprehensively review the recent applications of antigen-specific germline antibody features, physicochemical properties-associated germline antibody features, and disease manifestation-associated germline antibody features on vaccine development, antibody discovery, antibody optimization, and disease diagnosis. Lastly, we discuss the bottlenecks and perspectives of current and potential applications of germline antibody features in the biotechnology field.
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Affiliation(s)
- Yingjie Zhang
- National Key Laboratory of Veterinary Public Health Security, Beijing Key Laboratory of Detection Technology for Animal-Derived Food, College of Veterinary Medicine, China Agricultural University, 100193 Beijing, People's Republic of China
| | - Qing Li
- National Key Laboratory of Veterinary Public Health Security, Beijing Key Laboratory of Detection Technology for Animal-Derived Food, College of Veterinary Medicine, China Agricultural University, 100193 Beijing, People's Republic of China
| | - Liang Luo
- National Key Laboratory of Veterinary Public Health Security, Beijing Key Laboratory of Detection Technology for Animal-Derived Food, College of Veterinary Medicine, China Agricultural University, 100193 Beijing, People's Republic of China
| | - Changfei Duan
- National Key Laboratory of Veterinary Public Health Security, Beijing Key Laboratory of Detection Technology for Animal-Derived Food, College of Veterinary Medicine, China Agricultural University, 100193 Beijing, People's Republic of China
| | - Jianzhong Shen
- National Key Laboratory of Veterinary Public Health Security, Beijing Key Laboratory of Detection Technology for Animal-Derived Food, College of Veterinary Medicine, China Agricultural University, 100193 Beijing, People's Republic of China
| | - Zhanhui Wang
- National Key Laboratory of Veterinary Public Health Security, Beijing Key Laboratory of Detection Technology for Animal-Derived Food, College of Veterinary Medicine, China Agricultural University, 100193 Beijing, People's Republic of China.
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Herrock OT, Deer E, Amaral LM, Campbell N, Lemon J, Ingram N, Cornelius DC, Turner TW, Fitzgerald S, Ibrahim T, Dechend R, Wallukat G, LaMarca B. B2 cells contribute to hypertension and natural killer cell activation possibly via AT1-AA in response to placental ischemia. Am J Physiol Renal Physiol 2023; 324:F179-F192. [PMID: 36417275 PMCID: PMC9844978 DOI: 10.1152/ajprenal.00190.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 10/31/2022] [Accepted: 11/20/2022] [Indexed: 11/24/2022] Open
Abstract
Preeclampsia, new onset hypertension during pregnancy, is associated with activated T helper cells (Th) and B cells secreting agonistic autoantibodies against the angiotensin II type 1 receptor (AT1-AA). The reduced uterine perfusion pressure (RUPP) model of placental ischemia recapitulates these characteristics. We have shown that Th-B cell communication contributes to AT1-AA and symptoms of preeclampsia in the RUPP rat. B2 cells are classical B cells that communicate with Th cells and are then transformed into memory B cells. We hypothesize that B2 cells cause hypertension, natural killer (NK) cell activation, and complement activation during pregnancy through the production of AT1-AA. To test this hypothesis, total splenic B cells and B2 cells were isolated from normal pregnant (NP) or RUPP rats on gestational day (GD)19 and adoptively transferred into GD12 NP rats. A group of recipient rats was treated with a specific inhibitor peptide of AT1-AA. On GD19, mean arterial pressure was measured, tissues were collected, activated NK cells were measured by flow cytometry, and AT1-AA was measured by cardiomyocyte assay. NP recipients of RUPP B cells or RUPP B2 cells had increased mean arterial pressure, AT1-AA, and circulating activated NK cells compared with recipients of NP B cells. Hypertension in NP recipients of RUPP B cells or RUPP B2 was attenuated with AT1-AA blockade. This study demonstrates that B cells and B2 cells from RUPP rats cause hypertension and increased AT1-AA and NK cell activation in response to placental ischemia during pregnancy.NEW & NOTEWORTHY This study demonstrates that placental ischemia-stimulated B2 cells induce hypertension and circulating natural killer cell activation and angiotensin II type 1 receptor production in normal pregnant rats.
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Affiliation(s)
- Owen T Herrock
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - Evangeline Deer
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - Lorena M Amaral
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - Nathan Campbell
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - James Lemon
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - Nicole Ingram
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - Denise C Cornelius
- Emergency Medicine, University of Mississippi Medical Center, Jackson, Mississippi
| | - Ty W Turner
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - Sarah Fitzgerald
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - Tarek Ibrahim
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
| | - Ralf Dechend
- Experimental and Clinical Research Center, HELIOS Clinic, Max-Delbrück-Centrum für Molekulare Medizin, Berlin, Germany
| | - Gerd Wallukat
- Experimental and Clinical Research Center, HELIOS Clinic, Max-Delbrück-Centrum für Molekulare Medizin, Berlin, Germany
| | - Babbette LaMarca
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, Mississippi
- Department of Obstetrics and Gynecology, University of Mississippi Medical Center, Jackson, Mississippi
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17
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Qi J, Jiang Q, Wang P, Wang Z, Zhang X. Further analysis of natural antibodies against ischemic stroke. Front Neurol 2023; 14:1130748. [PMID: 36741286 PMCID: PMC9896516 DOI: 10.3389/fneur.2023.1130748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 01/05/2023] [Indexed: 01/21/2023] Open
Abstract
Background Our previous study revealed that circulating levels of IgG natural antibodies (NAbs) for vascular endothelial growth factor receptor 1 (VEGFR1) were significantly decreased in patients with arteriosclerosis compared with control subjects. To enhance the sensitivity of an enzyme-linked immunosorbent assay (ELISA) developed in-house for antibody testing, the present work was designed to investigate additive signals in the in-house ELISA developed with the combination of two or more linear peptide antigens derived from target proteins of interest, including VEGFR1, oxidized low-density lipoprotein receptor 1 (LOX-1), interleukins 6 (IL6) and 8 (IL8). Methods A total of 218 patients with ischemic stroke and 198 healthy controls were enrolled and an in-house ELISA was developed with linear peptides derived from VEGFR1, LOX-1, IL6, and IL8 to detect their IgG levels in plasma. Results Compared with control subjects, plasma levels of IgG NAbs for the IL6-IL8 combination were significantly lower in female patients (Z = -3.149, P = 0.002), whereas male patients showed significantly lower levels of plasma anti-VEGFR IgG (Z = -3.895, P < 0.001) and anti-LOX1a IgG (Z = -4.329, P < 0.001). Because plasma levels of IgG NAbs for both the IL6-IL8-LOX1a-LOX1b combination and the VEGFR1a-VEGFR1b-LOX1a-LOX1b combination were significantly lower in the patient group than the control group, receiver operating characteristic (ROC) analysis was performed and the results showed that the VEGFR1a-VEGFR1b-LOX1a-LOX1b combination had an area under the ROC curve (AUC) of 0.70 for its IgG assay with a sensitivity of 27.1% against the specificity of 95.5% and that the IL6-IL8-LOX1a-LOX1b combination had an AUC of 0.67 for its IgG assay with a sensitivity of 21.1% against the specificity of 95.5%. Spearman correlation analysis showed that plasma IgG NAbs against the IL6-IL8 combination were positively correlated with carotid plaque size only in male patients (r = 0.270, p = 0.002). Conclusions Circulating IgG NAbs for the target molecules studied may be potential biomarkers for a subgroup of ischemic stroke and also contribute to the gender differences in clinical presentation of the disease.
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Affiliation(s)
- Jingjing Qi
- Department of Neurology, The Second Hospital of Jilin University, Changchun, China,Department of Nephrology, The Second Hospital of Jilin University, Changchun, China
| | - Quanhang Jiang
- Department of Nephrology, The Second Hospital of Jilin University, Changchun, China
| | - Peng Wang
- Department of Neurology, The Second Hospital of Jilin University, Changchun, China
| | - Zhenqi Wang
- Key Laboratory of Radiobiology of National Health Commission (NHC), School of Public Health, Jilin University, Changchun, China
| | - Xuan Zhang
- Department of Nephrology, The Second Hospital of Jilin University, Changchun, China,*Correspondence: Xuan Zhang ✉
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18
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Androsova LV, Vetlugina TP, Nikitina VB, Zozulya SA, Otman IN, Belokrylova MF, Klyushnik TP. [Inflammatory markers in organic nonpsychotic disorders]. Zh Nevrol Psikhiatr Im S S Korsakova 2023; 123:88-93. [PMID: 36946403 DOI: 10.17116/jnevro202312303188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
OBJECTIVE To determine the indicators of systemic inflammation in peripheral blood samples of patients with organic non-psychotic disorders. MATERIAL AND METHODS The study included 60 patients, aged 56.9±7.7 years, with a disease duration of 7.3±5.55 years, with a verified ICD-10 diagnosis «Organic emotionally labile (asthenic) disorder» (F06.6) and «Organic Anxiety Disorder» (F06.4). Patients with organic asthenic disorder were divided into two groups according to the prevailing symptoms: 36 patients with asthenic-cephalgic syndrome (AC); 10 patients with astheno-dysthymic syndrome (AD); the third group (n=14) included patients with organic anxiety disorder (AND). The control group consisted of 65 people matched for age and sex with patients. The activity of leukocyte elastase (LE) and α1-proteinase inhibitor (α1-PI) was determined by the spectrophotometric method, the levels of aAB to S100b and MBP were determined by ELISA. The protease-inhibitory index (PII), i.e., the ratio of LE activity to α1-PI, was calculated. RESULTS A significant increase in LE (235.4 [216.4; 258.1] nmol/min*ml, p<0.001), the functional activity of α1-PI (43.1 [38.7; 47.6] u/ml, p<0.001), the level of aAB to S100b (0.78 [0.70; 0.89] opt.units, p<0.05) and a decrease in PII (6.19 [5.32; 6.9], p<0.05) in the group of patients with organic non-mental disorders compared with controls were shown. Deviations from the normal values of immune markers of inflammation in blood samples were also found in various syndromes. Clustering of the total group of patients by LE activity made it possible to identify 2 immunotypes with a balanced and unbalanced inflammatory process, confirming the clinical diversity of the disease: 60% of patients with AC syndrome belong to the 1st cluster, in which the ratio of immune markers characterizes a balanced inflammatory process aimed at restoration of homeostasis; 80% of patients with organic AND belong to the second cluster, which characterizes low proteolytic activity and imbalance of inflammation, which is an unfavorable prognostic factor in terms of the further course of the disease and therapy. CONCLUSION The results confirm the importance of the inflammatory link in the neuroprogression of organic non-psychotic disorders. The identified features of the immune response can serve as an additional paraclinical criterion for differential diagnosis and evaluation of the prognosis of the further development of the disease.
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Affiliation(s)
| | - T P Vetlugina
- Mental Health Research Institute - Tomsk National Research Medical Center Russian Academy of Sciences, Tomsk, Russia
| | - V B Nikitina
- Mental Health Research Institute - Tomsk National Research Medical Center Russian Academy of Sciences, Tomsk, Russia
| | - S A Zozulya
- Mental Health Research Centre, Moscow, Russia
| | - I N Otman
- Mental Health Research Centre, Moscow, Russia
| | - M F Belokrylova
- Mental Health Research Institute - Tomsk National Research Medical Center Russian Academy of Sciences, Tomsk, Russia
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19
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The Many Faces of Hemolysis. JOURNAL OF INFUSION NURSING 2023; 46:14-27. [PMID: 36571824 DOI: 10.1097/nan.0000000000000491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Hemolysis is a problem associated with a variety of red cell pathologies and physiologies not limited to the transfusion of cells. Various pathways lead to the observed outcomes when a hemolytic event occurs. Each event, and the pathway it follows, is based on characteristics of the red cell, the location in which the hemolysis occurs, and the interaction of the immune system. The severity of an event can be predicted with the knowledge of how these 3 factors interface. Although not all hemolytic events are alike, similarities may exist when the pathways overlap.
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20
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Cai R, Zhao F, Zhou H, Wang Z, Lin D, Huang L, Xie W, Chen J, Zhou L, Zhang N, Huang C. A tumor-associated autoantibody panel for the detection of non-small cell lung cancer. Front Oncol 2022; 12:1056572. [PMID: 36531074 PMCID: PMC9757608 DOI: 10.3389/fonc.2022.1056572] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 11/18/2022] [Indexed: 09/02/2023] Open
Abstract
Lung cancer is the second most frequent malignancy and the leading cause of cancer-associated death worldwide. Compared with patients diagnosed at advanced disease stages, early detection of lung cancer significantly improved the 5-year survival rate from 3.3% to 48.8%, which highlights the importance of early detection. Although multiple technologies have been applied to the screening and early diagnosis of lung cancer so far, some limitations still exist so they could not fully suit the needs for clinical application. Evidence show that autoantibodies targeting tumor-associated antigens(TAAs) could be found in the sera of early-stage patients, and they are of great value in diagnosis. Methods, we identified and screened TAAs in early-stage non-small cell lung cancer(NSCLC) samples using the serological analysis of recombinant cDNA expression libraries(SEREX). We measured the levels of the 36 autoantibodies targeting TAAs obtained by preliminary screening via liquid chip technique in the training set(332 serum samples from early-stage NSCLC patients, 167 samples from patients with benign lung lesions, and 208 samples from patients with no obvious abnormalities in lungs), and established a binary logistic regression model based on the levels of 8 autoantibodies to distinguish NSCLC samples. Results, We validated the diagnostic efficacy of this model in an independent test set(163 serum samples from early-stage NSCLC patients, and 183 samples from patients with benign lung lesions), the model performed well in distinguishing NSCLC samples with an AUC of 0.8194. After joining the levels of 4 serum tumor markers into its independent variables, the final model reached an AUC of 0.8568, this was better than just using the 8 autoantibodies (AUC:0.8194) or the 4 serum tumor markers alone(AUC: 0.6948). In conclusion, we screened and identified a set of autoantibodies in the sera of early-stage NSCLC patients through SEREX and liquid chip technique. Based on the levels of 8 autoantibodies, we established a binary logistic regression model that could diagnose early-stage NSCLC with high sensitivity and specificity, and the 4 conventional serum tumor markers were also suggested to be effective supplements for the 8 autoantibodies in the early diagnosis of NSCLC.
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Affiliation(s)
- Ruijun Cai
- Department of Thoracic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Feng Zhao
- Research and Development Department, Guangzhou BioBlue Technology Co. Ltd, Guangzhou, China
| | - Haiying Zhou
- Department of Orthopaedics, AIR Force Hospital of Southern Theater Command of People's Liberation Army of China (PLA), Guangzhou, China
| | - Zengsong Wang
- Research and Development Department, Guangzhou BioBlue Technology Co. Ltd, Guangzhou, China
| | - Dang Lin
- Research and Development Department, Guangzhou BioBlue Technology Co. Ltd, Guangzhou, China
| | - Lu Huang
- Research and Development Department, Guangzhou BioBlue Technology Co. Ltd, Guangzhou, China
- School of Pharmacutical Sciences, Wuhan University, Wuhan, China
| | - Wenling Xie
- Research and Development Department, Guangzhou BioBlue Technology Co. Ltd, Guangzhou, China
| | - Jiawen Chen
- Research and Development Department, Guangzhou BioBlue Technology Co. Ltd, Guangzhou, China
| | - Lamei Zhou
- Research and Development Department, Guangzhou BioBlue Technology Co. Ltd, Guangzhou, China
| | - Ni Zhang
- Department of Thoracic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chaoyuan Huang
- Research and Development Department, Guangzhou BioBlue Technology Co. Ltd, Guangzhou, China
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21
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Faber E, Tshilwane SI, Van Kleef M, Pretorius A. The impact of Escherichia coli contamination products present in recombinant African horse sickness virus serotype 4 proteins on the innate and humoral immune responses. Mol Immunol 2022; 152:1-13. [DOI: 10.1016/j.molimm.2022.09.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 09/22/2022] [Accepted: 09/29/2022] [Indexed: 11/17/2022]
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22
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Hampton BK, Plante KS, Whitmore AC, Linnertz CL, Madden EA, Noll KE, Boyson SP, Parotti B, Xenakis JG, Bell TA, Hock P, Shaw GD, de Villena FPM, Ferris MT, Heise MT. Forward genetic screen of homeostatic antibody levels in the Collaborative Cross identifies MBD1 as a novel regulator of B cell homeostasis. PLoS Genet 2022; 18:e1010548. [PMID: 36574452 PMCID: PMC9829176 DOI: 10.1371/journal.pgen.1010548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 01/09/2023] [Accepted: 11/28/2022] [Indexed: 12/28/2022] Open
Abstract
Variation in immune homeostasis, the state in which the immune system is maintained in the absence of stimulation, is highly variable across populations. This variation is attributed to both genetic and environmental factors. However, the identity and function of specific regulators have been difficult to identify in humans. We evaluated homeostatic antibody levels in the serum of the Collaborative Cross (CC) mouse genetic reference population. We found heritable variation in all antibody isotypes and subtypes measured. We identified 4 quantitative trait loci (QTL) associated with 3 IgG subtypes: IgG1, IgG2b, and IgG2c. While 3 of these QTL map to genome regions of known immunological significance (major histocompatibility and immunoglobulin heavy chain locus), Qih1 (associated with variation in IgG1) mapped to a novel locus on Chromosome 18. We further associated this locus with B cell proportions in the spleen and identify Methyl-CpG binding domain protein 1 under this locus as a novel regulator of homeostatic IgG1 levels in the serum and marginal zone B cells (MZB) in the spleen, consistent with a role in MZB differentiation to antibody secreting cells.
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Affiliation(s)
- Brea K. Hampton
- Curriculum in Genetics and Molecular Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Kenneth S. Plante
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Alan C. Whitmore
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Colton L. Linnertz
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Emily A. Madden
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Kelsey E. Noll
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Samuel P. Boyson
- Curriculum in Genetics and Molecular Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Breantie Parotti
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - James G. Xenakis
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Timothy A. Bell
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Pablo Hock
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Ginger D. Shaw
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Fernando Pardo-Manuel de Villena
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina, United States of America
| | - Martin T. Ferris
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Mark T. Heise
- Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina, United States of America
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23
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Rawat K, Soucy SM, Kolling FW, Diaz KM, King WT, Tewari A, Jakubzick CV. Natural Antibodies Alert the Adaptive Immune System of the Presence of Transformed Cells in Early Tumorigenesis. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2022; 209:1252-1259. [PMID: 36028292 PMCID: PMC9515310 DOI: 10.4049/jimmunol.2200447] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 08/01/2022] [Indexed: 11/07/2022]
Abstract
Recent studies have revealed a critical role for natural Abs (NAbs) in antitumor immune responses. However, the role of NAbs in cancer immunosurveillance remains unexplored, mainly because of the lack of in vivo models that mimic the early recognition and elimination of transforming cells. In this article, we propose a role for NAbs in alerting the immune system against precancerous neoantigen-expressing cells immediately after they escape intrinsic tumor suppression mechanisms. We identify four distinct reproducible, trackable, MHC-matched neoantigen-expressing cell models that do not form tumors as the end point. This amplified readout in the critical window prior to tumor formation allows investigation of new mediators of cancer immunosurveillance. We found that neoantigen-expressing cells adoptively transferred in NAb-deficient mice persisted, whereas they were eliminated in wild-type mice, indicating that the circulating NAb repertoire alerts the immune system to the presence of transformed cells. Moreover, immunity is mounted against immunogenic and nonimmunogenic neoantigens contained in the NAb-tagged cells, regardless of whether the NAb directly recognizes the neoantigens. Beyond these neoantigen-expressing model systems, we observed a significantly greater tumor burden in chemically and virally induced tumor models in NAb-deficient mice compared with wild-type mice. Restoration of the NAb repertoire in NAb-deficient mice elicited the recognition and elimination of neoantigen-expressing cells and cancer. These data show that NAbs are required and sufficient for elimination of transformed cells early in tumorigenesis. These models can now be used to investigate how NAbs stimulate immunity via recognition receptors to eliminate precancerous cells.
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Affiliation(s)
- Kavita Rawat
- Department of Microbiology and Immunology, Dartmouth Geisel School of Medicine, Hanover, NH; and
| | - Shannon M Soucy
- Department of Biomedical Data Science, Dartmouth Geisel School of Medicine, Hanover, NH
| | - Fred W Kolling
- Department of Biomedical Data Science, Dartmouth Geisel School of Medicine, Hanover, NH
| | - Kiara Manohar Diaz
- Department of Microbiology and Immunology, Dartmouth Geisel School of Medicine, Hanover, NH; and
| | - William T King
- Department of Microbiology and Immunology, Dartmouth Geisel School of Medicine, Hanover, NH; and
| | - Anita Tewari
- Department of Microbiology and Immunology, Dartmouth Geisel School of Medicine, Hanover, NH; and
| | - Claudia V Jakubzick
- Department of Microbiology and Immunology, Dartmouth Geisel School of Medicine, Hanover, NH; and
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Experimental Research Models to Assess the Cross-Reactivity between Can f 5 and Human PSA—Two Different Perspectives. Int J Mol Sci 2022; 23:ijms231911223. [PMID: 36232522 PMCID: PMC9570149 DOI: 10.3390/ijms231911223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/19/2022] [Accepted: 09/20/2022] [Indexed: 11/17/2022] Open
Abstract
The similarity in antigenic structures, including the degree of correspondence between the amino acid sequence and the spatial structure, is not always reflected in the actual cross-reactivity of allergens. Inhibition tests appear to be an invaluable tool for assessing potential cross-reactivity between allergens under natural conditions. In this publication, we present two experimental models of inhibition tests: solid phase (SP-IT) and liquid phase (LP-IT). As an exemplary research model, we used the cross-reactivity between human PSA and anti-Can f 5 IgE antibodies. We performed an SP-IT model using a microplate coated with human PSA. The LP-IT model was based on mixing anti-Can f 5 IgE positive serum with a material containing human PSA. Anti-Can f 5 IgE and PSA concentrations before and after inhibition were measured to evaluate inhibition effectiveness. The results of the performed experiments showed that both proposed models of inhibition tests are an effective tools for studying cross-reactive relationships between antigens. In the SP-IT, the concentration of anti-Can f 5 decreased by 21.6% and, in the LP-IT, it decreased by 34.51%. In turn, the PSA concentration in the SP-IT decreased by 11.25% and, in the LP-IT, it decreased by 15.49%. In conclusion, both the SP-IT and the LP-IT seem to be effective tools for assessing the actual cross-reactivity between different allergens.
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Vargas-Villavicencio JA, Cañedo-Solares I, Correa D. Anti-Toxoplasma gondii IgM Long Persistence: What Are the Underlying Mechanisms? Microorganisms 2022; 10:microorganisms10081659. [PMID: 36014077 PMCID: PMC9415799 DOI: 10.3390/microorganisms10081659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 08/11/2022] [Accepted: 08/12/2022] [Indexed: 11/16/2022] Open
Abstract
Diagnosis of Toxoplasma gondii acute infection was first attempted by detection of specific IgM antibodies, as for other infectious diseases. However, it was noted that this immunoglobulin declines slowly and may last for months or even years. Apart from the diagnostic problem imposed on clinical management, this phenomenon called our attention due to the underlying phenomena that may be causing it. We performed a systematic comparison of reports studying IgM antibody kinetics, and the data from the papers were used to construct comparative plots and other graph types. It became clear that this phenomenon is quite generalized, and it may also occur in animals. Moreover, this is not a technical issue, although some tests make more evident the prolonged IgM decay than others. We further investigated biological reasons for its occurrence, i.e., infection dynamics (micro-reactivation–encystment, reinfection and reactivation), parasite strain relevance, as well as host innate, natural B cell responses and Ig class-switch problems inflicted by the parasite. The outcomes of these inquiries are presented and discussed herein.
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Affiliation(s)
| | - Irma Cañedo-Solares
- Laboratorio de Inmunología Experimental, Instituto Nacional de Pediatría, Mexico City 04530, Mexico
| | - Dolores Correa
- Dirección de Investigación/Centro de Investigación en Ciencias de la Salud, FCS, Universidad Anáhuac México Campus Norte, Av Universidad Anáhuc 46, Lomas Anáhuac, Huixquilucan 52786, Mexico
- Correspondence: ; Tel.: +52-(55)-5627-0210-7637
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Bermea K, Bhalodia A, Huff A, Rousseau S, Adamo L. The Role of B Cells in Cardiomyopathy and Heart Failure. Curr Cardiol Rep 2022; 24:935-946. [PMID: 35689723 PMCID: PMC9422953 DOI: 10.1007/s11886-022-01722-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/16/2022] [Indexed: 11/28/2022]
Abstract
PURPOSE OF REVIEW To summarize the current knowledge on the role that B lymphocytes play in heart failure. RECENT FINDINGS Several studies from murine models have shown that B cells modulate cardiac adaptation to injury and ultimately affect the degree of cardiac dysfunction after acute ischemic damage. In addition, a B cell-modulating small molecule was recently shown to have beneficial effects in humans with heart failure with preserved ejection fraction. B lymphocytes are specialized immune cells present in all jawed vertebrates. They are characteristically known for their ability to produce antibodies, but they have other functions and are important players in virtually all forms of immune responses. A growing body of evidence indicates that B cells are intimately connected with the heart and that B cell dysregulation might play a role in the pathogenesis and progression of both heart failure with reduced ejection fraction and heart failure with preserved ejection fraction. B cells are therefore gathering attention as potential targets for the development of novel immunomodulatory-based treatments for heart failure.
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Affiliation(s)
- Kevin Bermea
- Division of Cardiology, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Aashik Bhalodia
- Division of Cardiology, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Angelo Huff
- Division of Cardiology, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Sylvie Rousseau
- Division of Cardiology, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Luigi Adamo
- Division of Cardiology, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA.
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Cervantes O, Talavera IC, Every E, Coler B, Li M, Li A, Li H, Adams Waldorf K. Role of hormones in the pregnancy and sex-specific outcomes to infections with respiratory viruses. Immunol Rev 2022; 308:123-148. [PMID: 35373371 PMCID: PMC9189035 DOI: 10.1111/imr.13078] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 03/04/2022] [Indexed: 01/13/2023]
Abstract
Pregnant women infected with pathogenic respiratory viruses, such as influenza A viruses (IAV) and coronaviruses, are at higher risk for mortality, hospitalization, preterm birth, and stillbirth. Several factors are likely to contribute to the susceptibility of pregnant individuals to severe lung disease including changes in pulmonary physiology, immune defenses, and effector functions of some immune cells. Pregnancy is also a physiologic state characterized by higher levels of multiple hormones that may impact the effector functions of immune cells, such as progesterone, estrogen, human chorionic gonadotropin, prolactin, and relaxin. Each of these hormones acts to support a tolerogenic immune state of pregnancy, which helps prevent fetal rejection, but may also contribute to an impaired antiviral response. In this review, we address the unique role of adaptive and innate immune cells in the control of pathogenic respiratory viruses and how pregnancy and specific hormones can impact their effector actions. We highlight viruses with sex-specific differences in infection outcomes and why pregnancy hormones may contribute to fetal protection but aid the virus at the expense of the mother's health.
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Affiliation(s)
- Orlando Cervantes
- Department of Global Health, University of Washington, Seattle, Washington, United States of America
- Department of Obstetrics and Gynecology, University of Washington, Seattle, Washington, United States of America
| | - Irene Cruz Talavera
- Department of Global Health, University of Washington, Seattle, Washington, United States of America
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America
| | - Emma Every
- University of Washington School of Medicine, Spokane, Washington, United States of America
| | - Brahm Coler
- Department of Obstetrics and Gynecology, University of Washington, Seattle, Washington, United States of America
- Elson S. Floyd College of Medicine, Washington State University, Spokane, Washington, United States of America
| | - Miranda Li
- Department of Obstetrics and Gynecology, University of Washington, Seattle, Washington, United States of America
- Department of Biological Sciences, Columbia University, New York City, New York, United States of America
| | - Amanda Li
- Department of Obstetrics and Gynecology, University of Washington, Seattle, Washington, United States of America
- Case Western Reserve, Cleveland, Ohio, United States of America
| | - Hanning Li
- Department of Obstetrics and Gynecology, University of Washington, Seattle, Washington, United States of America
| | - Kristina Adams Waldorf
- Department of Global Health, University of Washington, Seattle, Washington, United States of America
- Department of Obstetrics and Gynecology, University of Washington, Seattle, Washington, United States of America
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Shome M, Chung Y, Chavan R, Park JG, Qiu J, LaBaer J. Serum autoantibodyome reveals that healthy individuals share common autoantibodies. Cell Rep 2022; 39:110873. [PMID: 35649350 PMCID: PMC9221390 DOI: 10.1016/j.celrep.2022.110873] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 03/02/2022] [Accepted: 05/04/2022] [Indexed: 12/02/2022] Open
Abstract
Autoantibodies are a hallmark of both autoimmune disease and cancer, but
they also occur in healthy individuals. Here, we perform a meta-analysis of nine
datasets and focus on the common autoantibodies shared by healthy individuals.
We report 77 common autoantibodies based on the protein microarray data obtained
from probing 182 healthy individual sera on 7,653 human proteins and an
additional 90 healthy individual sera on 1,666 human proteins. There is no
gender bias; however, the number of autoantibodies increase with age, plateauing
around adolescence. We use a bioinformatics pipeline to determine possible
molecular-mimicry peptides that can contribute to the elicitation of these
common autoantibodies. There is enrichment of intrinsic properties of proteins
like hydrophilicity, basicity, aromaticity, and flexibility for common
autoantigens. Subcellular localization and tissue-expression analysis reveal
that several common autoantigens are sequestered from the circulating
autoantibodies. Shome et al. performed a meta-analysis to discover the common
autoantibodies found in healthy individuals. These common autoantibodies appear
and increase during youth and plateau at adolescence. Bioinformatics techniques
demonstrate the potential role of molecular mimicry in their production as well
as several common intrinsic biochemical properties.
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Affiliation(s)
- Mahasish Shome
- Virginia G. Piper Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, AZ, USA
| | - Yunro Chung
- Virginia G. Piper Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, AZ, USA; College of Health Solutions, Arizona State University, Phoenix, AZ, USA
| | - Ramani Chavan
- Virginia G. Piper Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, AZ, USA
| | - Jin G Park
- Virginia G. Piper Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, AZ, USA
| | - Ji Qiu
- Virginia G. Piper Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, AZ, USA
| | - Joshua LaBaer
- Virginia G. Piper Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, AZ, USA.
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Valeff NJ, Ventimiglia MS, Dibo M, Markert UR, Jensen F. Splenic B1 B Cells Acquire a Proliferative and Anti-Inflamatory Profile During Pregnancy in Mice. Front Immunol 2022; 13:873493. [PMID: 35572585 PMCID: PMC9095819 DOI: 10.3389/fimmu.2022.873493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 03/28/2022] [Indexed: 11/13/2022] Open
Abstract
B cells are a heterogeneous cell population with differential ontogeny, anatomical location, and functions. B1 B cells are a distinct subpopulation characterized by their unique capacity of self-renewal, the production of large quantities of IL-10, and the ability to secrete protective, anti-inflammatory natural antibodies (NAbs), presumably upon down-regulation of CD1d expression. Although natural antibodies are thought to be protective, due to their polyreactivity, their participation in certain autoimmune diseases has been suggested. In the context of pregnancy, the role of B1 B cells has been discussed controversially. While in human pregnancies B1 B cells and natural/polyreactive antibodies they produce are involved in the development of preeclampsia, in mice they promote healthy gestation and fetal protection. In this work, we aimed to functionally characterize the splenic B1 B cell population during pregnancy in mice. Functional enrichment analysis using only up-regulated transcripts from a transcriptomic profile performed on total splenic B cells from pregnant compared to non-pregnant mice showed augmented cell cycle and DNA replication pathways. Proliferation studies by flow cytometry showed augmented Ki-67 proliferation marker expression and percentages of B1 B cells. Furthermore, B1 B cells produced higher levels of IL-10 and lower levels of TNF-α leading to an increased IL-10/TNF-α ratio and showing an immunoregulatory phenotype. Finally, we observed lower expression of CD1d on B1 B cells, suggesting a higher capacity to produce NAbs in the context of pregnancy. In summary, our results showed not only an expanded and proliferative splenic B1 B cell population during pregnancy but also the acquisition of immunomodulatory capacities suggesting its critical role in the intricate process of pregnancy tolerance.
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Affiliation(s)
- Natalin J Valeff
- Laboratorio de Inmunología de la Reproducción, CEFYBO-UBA-CONICET, Buenos Aires, Argentina
| | - María S Ventimiglia
- Laboratorio de Inmunología de la Reproducción, CEFYBO-UBA-CONICET, Buenos Aires, Argentina
| | - Marcos Dibo
- Laboratorio de Inmunología de la Reproducción, CEFYBO-UBA-CONICET, Buenos Aires, Argentina
| | - Udo R Markert
- Placenta Lab, Department of Obstetrics, University Hospital Jena, Jena, Germany
| | - Federico Jensen
- Laboratorio de Inmunología de la Reproducción, CEFYBO-UBA-CONICET, Buenos Aires, Argentina.,Centro Integrativo de Biología Y Química Aplicada, Universidad Bernardo O'Higgins, Santiago, Chile
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30
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Checkpoints and Immunity in Cancers: Role of GNG12. Pharmacol Res 2022; 180:106242. [DOI: 10.1016/j.phrs.2022.106242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 04/25/2022] [Accepted: 04/28/2022] [Indexed: 12/24/2022]
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Fernández-Velasco JI, Monreal E, Kuhle J, Meca-Lallana V, Meca-Lallana J, Izquierdo G, Oreja-Guevara C, Gascón-Giménez F, Sainz de la Maza S, Walo-Delgado PE, Lapuente-Suanzes P, Maceski A, Rodríguez-Martín E, Roldán E, Villarrubia N, Saiz A, Blanco Y, Diaz-Pérez C, Valero-López G, Diaz-Diaz J, Aladro Y, Brieva L, Íñiguez C, González-Suárez I, Rodríguez de Antonio LA, García-Domínguez JM, Sabin J, Llufriu S, Masjuan J, Costa-Frossard L, Villar LM. Baseline Inflammatory Status Reveals Dichotomic Immune Mechanisms Involved In Primary-Progressive Multiple Sclerosis Pathology. Front Immunol 2022; 13:842354. [PMID: 35386690 PMCID: PMC8977599 DOI: 10.3389/fimmu.2022.842354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 02/28/2022] [Indexed: 11/13/2022] Open
Abstract
Objective To ascertain the role of inflammation in the response to ocrelizumab in primary-progressive multiple sclerosis (PPMS). Methods Multicenter prospective study including 69 patients with PPMS who initiated ocrelizumab treatment, classified according to baseline presence [Gd+, n=16] or absence [Gd-, n=53] of gadolinium-enhancing lesions in brain MRI. Ten Gd+ (62.5%) and 41 Gd- patients (77.4%) showed non-evidence of disease activity (NEDA) defined as no disability progression or new MRI lesions after 1 year of treatment. Blood immune cell subsets were characterized by flow cytometry, serum immunoglobulins by nephelometry, and serum neurofilament light-chains (sNfL) by SIMOA. Statistical analyses were corrected with the Bonferroni formula. Results More than 60% of patients reached NEDA after a year of treatment, regardless of their baseline characteristics. In Gd+ patients, it associated with a low repopulation rate of inflammatory B cells accompanied by a reduction of sNfL values 6 months after their first ocrelizumab dose. Patients in Gd- group also had low B cell numbers and sNfL values 6 months after initiating treatment, independent of their treatment response. In these patients, NEDA status was associated with a tolerogenic remodeling of the T and innate immune cell compartments, and with a clear increase of serum IgA levels. Conclusion Baseline inflammation influences which immunological pathways predominate in patients with PPMS. Inflammatory B cells played a pivotal role in the Gd+ group and inflammatory T and innate immune cells in Gd- patients. B cell depletion can modulate both mechanisms.
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Affiliation(s)
| | - Enric Monreal
- Neurology Department, Ramon y Cajal University Hospital, Madrid, Spain
| | - Jens Kuhle
- Neurologic Clinic and Policlinic, Departments of Medicine, Biomedicine, and Clinical Research, University Hospital Basel, University of Basel, Basel, Switzerland
| | | | - José Meca-Lallana
- Multiple Sclerosis and Clinical Neuroimmunology Unit, Virgen de la Arrixaca University Hospital, Murcia, Spain
| | | | - Celia Oreja-Guevara
- Neurology Department, Cliínico San Carlos Hospital, Instituto de Investigación Sanitaria San Carlos (IdISSC), Madrid, Spain
| | | | | | | | | | - Aleksandra Maceski
- Neurologic Clinic and Policlinic, Departments of Medicine, Biomedicine, and Clinical Research, University Hospital Basel, University of Basel, Basel, Switzerland
| | | | - Ernesto Roldán
- Immunology Department, Ramon y Cajal University Hospital, Madrid, Spain
| | | | - Albert Saiz
- Center of Neuroimmunology, Neurology Department, Clínic of Barcelona Hospital, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), and Institut de Neurociències, Universitat de Barcelona, Barcelona, Spain
| | - Yolanda Blanco
- Center of Neuroimmunology, Neurology Department, Clínic of Barcelona Hospital, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), and Institut de Neurociències, Universitat de Barcelona, Barcelona, Spain
| | | | - Gabriel Valero-López
- Multiple Sclerosis and Clinical Neuroimmunology Unit, Virgen de la Arrixaca University Hospital, Murcia, Spain
| | - Judit Diaz-Diaz
- Neurology Department, Cliínico San Carlos Hospital, Instituto de Investigación Sanitaria San Carlos (IdISSC), Madrid, Spain
| | - Yolanda Aladro
- Neurology Department, Getafe University Hospital, Madrid, Spain
| | - Luis Brieva
- Neurology Department, Arnau de Vilanova Hospital, Lleida, Spain
| | - Cristina Íñiguez
- Neurology Department, Lozano Blesa Clinic University Hospital, Zaragoza, Spain
| | | | | | | | - Julia Sabin
- Neurology Department, Puerta de Hierro University Hospital, Madrid, Spain
| | - Sara Llufriu
- Center of Neuroimmunology, Neurology Department, Clínic of Barcelona Hospital, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), and Institut de Neurociències, Universitat de Barcelona, Barcelona, Spain
| | - Jaime Masjuan
- Neurology Department, Ramon y Cajal University Hospital, Madrid, Spain
| | | | - Luisa M Villar
- Immunology Department, Ramon y Cajal University Hospital, Madrid, Spain
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Güven BB, Özçelik F, Tanoglu A. Use of the derived isohemagglutinin parameter to predict patients with COVID-19 in need of an intensive care unit. Cent Eur J Immunol 2022; 47:73-83. [PMID: 35600159 PMCID: PMC9115598 DOI: 10.5114/ceji.2022.115091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 03/22/2022] [Indexed: 11/17/2022] Open
Abstract
Predicting which patients will need the intensive care unit (ICU) due to severe COVID-19 is critical in terms of disease treatment. In this study, the use of the derived isohemagglutinin (dIH) parameter calculated from isohemagglutinin (IH) values and neutrophil to lymphocyte ratios for prediction of clinical care (CLC), ICU admission and mortality status was investigated for the morbidity and mortality of COVID-19. The data of approximately 21,500 patients admitted to the hospital with the suspicion of COVID-19 were scanned retrospectively. A total of 352 patients with IH results were divided into three groups according to CLC, ICU admission and mortality. Isohemagglutinin, hemogram and biochemistry test results, demographic characteristics, chronic diseases, length of stay, treatments, ICU admission and mortality records were reviewed for all patients. The relationship between test results, demographic characteristics, clinical status and mortality was investigated using statistical methods. The dIH values of patients with ICU admission and mortality were much lower than those of CLC patients [median (min-max): 3.34 (0.14-95.8) and 0.82 (0.05-42.3) vs. 0.18 (0.01-20.6) titers, p < 0.01, respectively]. In the ROC analysis for the power of dIH to discriminate ICU admission, the cutoff was ≤ 0.68 with sensitivity 88.9%, and specificity 79.6%. It was determined that a 1-unit increase in dIH values decreased the need for ICU by 2.09 times and the mortality of those receiving ICU treatment by 2.02 times. dIH values calculated in the early stages of the disease in patients with COVID-19 can be used to estimate the clinical progression associated with ICU admission and mortality.
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Affiliation(s)
- Bülent Barış Güven
- Department of Anesthesiology and Reanimation, Sultan 2. Abdulhamidhan Training and Research Hospital, Istanbul, Turkey
| | - Fatih Özçelik
- Department of Medical Biochemistry, Sultan 2. Abdulhamid Han Training and Research Hospital, University of Health Sciences, Turkey
| | - Alpaslan Tanoglu
- Department of Internal Medicine and Gastroenterology, Sancaktepe Training and Research Hospital, University of Health Sciences, Istanbul, Turkey
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Bovenhuis H, Berghof TVL, Visker MHPW, Arts JAJ, Visscher J, van der Poel JJ, Parmentier HK. Divergent selection for natural antibodies in poultry in the presence of a major gene. Genet Sel Evol 2022; 54:24. [PMID: 35313798 PMCID: PMC8939063 DOI: 10.1186/s12711-022-00715-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 03/08/2022] [Indexed: 11/21/2022] Open
Abstract
Background Natural antibodies (NAb) are antibodies that are present in a healthy individual without requiring previous exposure to an exogenous antigen. Selection for high NAb levels might contribute to improved general disease resistance. Our aim was to analyse the genetic background of NAb based on a divergent selection experiment in poultry, and in particular the effect of a polymorphism in the TLR1A gene. Methods The study population consisted of a base population from a commercial pure-bred elite white leghorn layer line and seven generations of birds from a High and Low selection line. Birds were selected for total KLH-binding NAb titer (IgTotal). An enzyme-linked immunosorbent assay was performed to determine NAb titers in blood plasma for IgTotal and the antibody isotypes IgM and IgG. NAb titers were available for 10,878 birds. Genotypes for a polymorphism in TLR1A were determined for chickens in generations 5, 6 and 7. The data were analysed using mixed linear animal models. Results The heritability estimate for IgM was 0.30 and higher than that for IgG and IgTotal (0.12). Maternal environmental effects explained 2 to 3% of the phenotypic variation in NAb. Selection for IgTotal resulted in a genetic difference between the High and Low line of 2.4 titer points (5.1 genetic standard deviation) in generation 7. For IgM, the selection response was asymmetrical and higher in the Low than the High line. The frequency of the TLR1A C allele was 0.45 in the base population and 0.66 and 0.04 in generation 7 of the High and Low line, respectively. The TLR1A polymorphism had large and significant effects on IgTotal and IgM. Estimated genotypic effects suggest full dominance of the TLR1A C allele. Significant TLR1A by generation interactions were detected for IgM and IgTotal. Conclusions The effect of a polymorphism in the TLR1A gene on IgTotal and IgM NAb was confirmed. Furthermore, we provide experimental verification of changes in allele frequencies at a major gene with dominant gene action on a quantitative trait that is subjected to mass selection. TLR1A by generation interactions indicate sensitivity to environmental factors. Supplementary Information The online version contains supplementary material available at 10.1186/s12711-022-00715-9.
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Affiliation(s)
- Henk Bovenhuis
- Animal Breeding and Genomics Centre, Department of Animal Sciences, Wageningen University, Wageningen, The Netherlands.
| | - Tom V L Berghof
- Animal Breeding and Genomics Centre, Department of Animal Sciences, Wageningen University, Wageningen, The Netherlands.,Adaptation Physiology Group, Department of Animal Sciences, Wageningen University, Wageningen, The Netherlands.,Reproductive Biotechnology, TUM School of Life Sciences, Technical University of Munich, Liesel-Beckmann-Strasse 1, 85354, Freising, Germany
| | - Marleen H P W Visker
- Animal Breeding and Genomics Centre, Department of Animal Sciences, Wageningen University, Wageningen, The Netherlands
| | - Joop A J Arts
- Adaptation Physiology Group, Department of Animal Sciences, Wageningen University, Wageningen, The Netherlands
| | - Jeroen Visscher
- Hendrix Genetics Research Technology & Service B.V, P.O. Box 114, 5830 AC, Boxmeer, The Netherlands
| | - Jan J van der Poel
- Animal Breeding and Genomics Centre, Department of Animal Sciences, Wageningen University, Wageningen, The Netherlands
| | - Henk K Parmentier
- Adaptation Physiology Group, Department of Animal Sciences, Wageningen University, Wageningen, The Netherlands
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Halperin ST, ’t Hart BA, Luchicchi A, Schenk GJ. The Forgotten Brother: The Innate-like B1 Cell in Multiple Sclerosis. Biomedicines 2022; 10:606. [PMID: 35327408 PMCID: PMC8945227 DOI: 10.3390/biomedicines10030606] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 02/21/2022] [Accepted: 03/01/2022] [Indexed: 02/04/2023] Open
Abstract
Multiple sclerosis (MS) is a neurodegenerative disease of the central nervous system (CNS), traditionally considered a chronic autoimmune attack against the insulating myelin sheaths around axons. However, the exact etiology has not been identified and is likely multi-factorial. Recently, evidence has been accumulating that implies that autoimmune processes underlying MS may, in fact, be triggered by pathological processes initiated within the CNS. This review focuses on a relatively unexplored immune cell-the "innate-like" B1 lymphocyte. The B1 cell is a primary-natural-antibody- and anti-inflammatory-cytokine-producing cell present in the healthy brain. It has been recently shown that its frequency and function may differ between MS patients and healthy controls, but its exact involvement in the MS pathogenic process remains obscure. In this review, we propose that this enigmatic cell may play a more prominent role in MS pathology than ever imagined. We aim to shed light on the human B1 cell in health and disease, and how dysregulation in its delicate homeostatic role could impact MS. Furthermore, novel therapeutic avenues to restore B1 cells' beneficial functions will be proposed.
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Affiliation(s)
| | | | - Antonio Luchicchi
- Department of Anatomy and Neurosciences, Amsterdam Neuroscience, MS Center Amsterdam, Amsterdam UMC, Vrije Universiteit, 1081 HZ Amsterdam, The Netherlands; (S.T.H.); (B.A.’t.H.)
| | - Geert J. Schenk
- Department of Anatomy and Neurosciences, Amsterdam Neuroscience, MS Center Amsterdam, Amsterdam UMC, Vrije Universiteit, 1081 HZ Amsterdam, The Netherlands; (S.T.H.); (B.A.’t.H.)
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35
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Raven N, Klaassen M, Madsen T, Thomas F, Hamede R, Ujvari B. Transmissible cancer influences immune gene expression in an endangered marsupial, the Tasmanian devil (Sarcophilus harrisii). Mol Ecol 2022; 31:2293-2311. [PMID: 35202488 PMCID: PMC9310804 DOI: 10.1111/mec.16408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 02/14/2022] [Indexed: 11/28/2022]
Abstract
Understanding the effects of wildlife diseases on populations requires insight into local environmental conditions, host defence mechanisms, host life‐history trade‐offs, pathogen population dynamics, and their interactions. The survival of Tasmanian devils (Sarcophilus harrisii) is challenged by a novel, fitness limiting pathogen, Tasmanian devil facial tumour disease (DFTD), a clonally transmissible, contagious cancer. In order to understand the devils’ capacity to respond to DFTD, it is crucial to gain information on factors influencing the devils’ immune system. By using RT‐qPCR, we investigated how DFTD infection in association with intrinsic (sex and age) and environmental (season) factors influences the expression of 10 immune genes in Tasmanian devil blood. Our study showed that the expression of immune genes (both innate and adaptive) differed across seasons, a pattern that was altered when infected with DFTD. The expression of immunogbulins IgE and IgM:IgG showed downregulation in colder months in DFTD infected animals. We also observed strong positive association between the expression of an innate immune gene, CD16, and DFTD infection. Our results demonstrate that sampling across seasons, age groups and environmental conditions are beneficial when deciphering the complex ecoevolutionary interactions of not only conventional host‐parasite systems, but also of host and diseases with high mortality rates, such as transmissible cancers.
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Affiliation(s)
- N Raven
- Deakin University, Geelong, School of Life and Environmental Sciences, Centre for Integrative Ecology, Waurn Ponds, Vic, 3216, Australia
| | - M Klaassen
- Deakin University, Geelong, School of Life and Environmental Sciences, Centre for Integrative Ecology, Waurn Ponds, Vic, 3216, Australia
| | - T Madsen
- Deakin University, Geelong, School of Life and Environmental Sciences, Centre for Integrative Ecology, Waurn Ponds, Vic, 3216, Australia
| | - F Thomas
- CREEC/CANECEV (CREES), Montpellier, France.,MIVEGEC, Université de Montpellier, CNRS, IRD, Montpellier, France
| | - R Hamede
- Deakin University, Geelong, School of Life and Environmental Sciences, Centre for Integrative Ecology, Waurn Ponds, Vic, 3216, Australia.,School of Natural Sciences, University of Tasmania, Private Bag 55, Hobart, Tasmania, 7001, Australia
| | - B Ujvari
- Deakin University, Geelong, School of Life and Environmental Sciences, Centre for Integrative Ecology, Waurn Ponds, Vic, 3216, Australia
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36
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Dibo M, Ventimiglia MS, Valeff N, Serradell MDLÁ, Jensen F. An overview of the role of probiotics in pregnancy-associated pathologies with a special focus on preterm birth. J Reprod Immunol 2022; 150:103493. [DOI: 10.1016/j.jri.2022.103493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 01/20/2022] [Accepted: 02/08/2022] [Indexed: 10/19/2022]
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37
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Puentes F, Benkert P, Amor S, Kuhle J, Giovannoni G. Antibodies to neurofilament light as potential biomarkers in multiple sclerosis. BMJ Neurol Open 2021; 3:e000192. [PMID: 34786556 PMCID: PMC8587694 DOI: 10.1136/bmjno-2021-000192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 10/03/2021] [Indexed: 12/29/2022] Open
Abstract
Background and objective The concentration of neurofilament light (NfL) protein in cerebrospinal fluid (CSF) and blood is widely considered as a quantitative measure of neuro-axonal injury. Immune reactivity to NfL released into extracellular fluids induces specific autoantibody response. We investigated the levels and avidity of antibodies to NfL in patients with multiple sclerosis (MS) treated with disease-modifying therapies (DMTs) and their correlation with disease worsening and NfL protein concentration. Methods We conducted a prospective longitudinal study in 246 patients with MS (125 DMT-treated and 121 untreated at baseline). Serum levels of NfL antibodies, antibody avidity and immune complexes were determined by ELISA. NfL protein was measured using the Simoa platform. Clinical variables were tested for their association with the measured parameters in multivariate generalised estimating equation models. Results Multivariate analysis showed that levels of NfL antibodies were higher in progressive MS compared with clinically isolated syndrome (CIS)/relapsing remitting multiple sclerosis (RRMS) (p=0.010). Anti-NfL levels drop with increasing disability score (Expanded Disability Status Scale (EDSS)) (p=0.002), although conversely, were significantly elevated in CIS/RRMS after a recent EDSS increase (p=0.012). Patients receiving DMTs showed decreased levels of anti-NfL (p=0.008), high-avidity antibodies (p=0.017) and immune-complexes compared with untreated CIS/RRMS. Patients with MS switching to natalizumab showed lower levels of anti-NfL but higher immune complexes compared with healthy controls (p=0.0071). A weak association was observed between the levels of NfL protein and NfL antibodies. Conclusions These results support the potential usefulness of quantifying antibody response to NfL as potential markers of progression and treatment response in MS and need to be considered when interpreting peripheral blood NfL levels.
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Affiliation(s)
- Fabiola Puentes
- Neuroimmunology Unit, Blizard Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Pascal Benkert
- Clinical Trial Unit, Department of Clinical Research, University Hospital Basel, Basel, Switzerland
| | - Sandra Amor
- Neuroimmunology Unit, Blizard Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK.,Pathology Department, Amsterdam UMC VUMC Site, Amsterdam, The Netherlands
| | - Jens Kuhle
- Neurology, Departments of Medicine, Biomedicine and Clinical Research, University Hospital Basel, Basel, Switzerland
| | - Gavin Giovannoni
- Neuroimmunology Unit, Blizard Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
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38
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Gong Y, Qin S, Dai L, Tian Z. The glycosylation in SARS-CoV-2 and its receptor ACE2. Signal Transduct Target Ther 2021; 6:396. [PMID: 34782609 PMCID: PMC8591162 DOI: 10.1038/s41392-021-00809-8] [Citation(s) in RCA: 96] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 10/10/2021] [Accepted: 10/24/2021] [Indexed: 02/05/2023] Open
Abstract
Coronavirus disease 2019 (COVID-19), a highly infectious disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has infected more than 235 million individuals and led to more than 4.8 million deaths worldwide as of October 5 2021. Cryo-electron microscopy and topology show that the SARS-CoV-2 genome encodes lots of highly glycosylated proteins, such as spike (S), envelope (E), membrane (M), and ORF3a proteins, which are responsible for host recognition, penetration, binding, recycling and pathogenesis. Here we reviewed the detections, substrates, biological functions of the glycosylation in SARS-CoV-2 proteins as well as the human receptor ACE2, and also summarized the approved and undergoing SARS-CoV-2 therapeutics associated with glycosylation. This review may not only broad the understanding of viral glycobiology, but also provide key clues for the development of new preventive and therapeutic methodologies against SARS-CoV-2 and its variants.
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Affiliation(s)
- Yanqiu Gong
- National Clinical Research Center for Geriatrics and Department of General Practice, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, and Collaborative Innovation Center of Biotherapy, 610041, Chengdu, China
| | - Suideng Qin
- School of Chemical Science & Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, 200092, Shanghai, China
| | - Lunzhi Dai
- National Clinical Research Center for Geriatrics and Department of General Practice, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, and Collaborative Innovation Center of Biotherapy, 610041, Chengdu, China.
| | - Zhixin Tian
- School of Chemical Science & Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, 200092, Shanghai, China.
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Ozcelik F, Tanoglu A, Guven BB, Keskin U, Kaplan M. Assessment of severity and mortality of COVID-19 with anti-A1 and anti-B IgM isohaemagglutinins, a reflection of the innate immune status. Int J Clin Pract 2021; 75:e14624. [PMID: 34251730 PMCID: PMC8420313 DOI: 10.1111/ijcp.14624] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 07/06/2021] [Indexed: 12/11/2022] Open
Abstract
AIMS The relationship between the innate immune system that creates the polysaccharide antibody response and COVID-19 is not fully understood. In this study, it was aimed to determine the predictive values of isohaemagglutinins in COVID-19 severity/mortality. METHODS Approximately 15 440 patients diagnosed with COVID-19 were examined, and a total of 286 patients with anti-B and anti-A1 IgM isohaemagglutinins test results were randomly enrolled in the study. These patients were stratified into two groups according to anti-A1 (n: 138 blood type B or O) and anti-B (n: 148 blood type A) IgM isohaemagglutinins. Anti-A1 or/and anti-B IgM, biochemical parameters, symptoms, chronic diseases, hospitalisation status, intubation status, admission to intensive care unit (ICU) and exitus status were recorded and evaluated for all patients. RESULTS Anti-A1 IgM and anti-B IgM were significantly lower in ICU patients (7.5 ± 9.9 vs 18.0 ± 20.4 and 5.5 ± 6.3 vs 19.3 ± 33.6 titres, respectively; P < .01) and in exitus patients (3.8 ± 3.6 vs 16.7 ± 18.7 and 3.5 ± 4.7 vs 16.9 ± 29.6 titres respectively; P < .01). In the ROC analysis performed to differentiate between exitus and discharge within groups, the sensitivity of anti-B IgM and anti-A1 IgM at cut-off ≤4 was 88.9% and 79.6%, specificity 66.0% and 73.4%, and AUC 0.831 and 0.861, respectively (P < .01). Anti-A1 IgM decreased the mortality risk 0.811 times per unit while anti-B IgM decreased 0.717 times (P < .01). CONCLUSION Anti-B and anti-A1 isohaemagglutinins, which are an expression of the innate immune system, can be used to predict the severity and mortality of COVID-19 disease.
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Affiliation(s)
- Fatih Ozcelik
- Department of Medical BiochemistryUniversity of Health Sciences TurkeySultan 2. Abdulhamid Han Training and Research HospitalIstanbulTurkey
| | - Alpaslan Tanoglu
- Department of GastroenterologyUniversity of Health Sciences TurkeySancaktepe Şehit Prof Dr Ilhan Varank Training and Research HospitalIstanbulTurkey
| | - Bulent Barıs Guven
- Department of Anesthesia and ReanimationUniversity of Health Sciences TurkeySultan 2. Abdulhamid Han Training and Research HospitalIstanbulTurkey
| | - Umran Keskin
- Department of Internal MedicineUniversity of Health Sciences TurkeyHaydarpasa Numune Training and Research HospitalIstanbulTurkey
| | - Mustafa Kaplan
- Department of Internal MedicineUniversity of Health Sciences TurkeySultan 2. Abdulhamid Han Training and Research HospitalIstanbulTurkey
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40
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Greco A, Straasheijm KR, Mul K, van den Heuvel A, van der Maarel SM, Joosten LA, van Engelen BG, Pruijn GJ. Profiling Serum Antibodies Against Muscle Antigens in Facioscapulohumeral Muscular Dystrophy Finds No Disease-Specific Autoantibodies. J Neuromuscul Dis 2021; 8:801-814. [PMID: 34024774 PMCID: PMC9789485 DOI: 10.3233/jnd-210653] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
BACKGROUND FSHD is caused by specific genetic mutations resulting in activation of the Double Homeobox 4 gene (DUX4). DUX4 targets hundreds of downstream genes eventually leading to muscle atrophy, oxidative stress, abnormal myogenesis, and muscle inflammation. We hypothesized that DUX4-induced aberrant expression of genes triggers a sustained autoimmune response against skeletal muscle cells. OBJECTIVE This study aimed at the identification of autoantibodies directed against muscle antigens in FSHD. Moreover, a possible relationship between serum antibody reactivity and DUX4 expression was also investigated. METHODS FSHD sera (N = 138, 48±16 years, 48% male) and healthy control sera (N = 20, 47±14 years, 50% male) were analyzed by immunoblotting for antibodies against several skeletal muscle protein extracts: healthy muscle, FSHD muscle, healthy and FSHD myotubes, and inducible DUX4 expressing myoblasts. In addition, DUX4 expressing myoblasts were analyzed by immunofluorescence with FSHD and healthy control sera. RESULTS The results showed that the reactivity of FSHD sera did not significantly differ from that of healthy controls, with all the tested muscle antigen extracts. Besides, the immunofluorescent staining of DUX4-expressing myoblasts was not different when incubated with either FSHD or healthy control sera. CONCLUSION Since the methodology used did not lead to the identification of disease-specific autoantibodies in the FSHD cohort, we suggest that autoantibody-mediated pathology may not be an important disease mechanism in FSHD. Nevertheless, it is crucial to further unravel if and which role the immune system plays in FSHD pathogenesis. Other innate as well as adaptive immune players could be involved in the complex DUX4 cascade of events and could become appealing druggable targets.
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Affiliation(s)
- Anna Greco
- Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands,Correspondence to: Anna Greco, MD, Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Reinier Postlaan 4, 6525 GC, Nijmegen, The Netherlands. P.O. Box 9101, 6500 HB Nijmegen, The Netherlands. Tel.: +31 68 71 17 452; Fax: +31 24 354 1122; E-mail:
| | - Kirsten R. Straasheijm
- Department of Biomolecular Chemistry, Institute for Molecules and Materials, Radboud University, Nijmegen, The Netherlands
| | - Karlien Mul
- Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Anita van den Heuvel
- Department of Human Genetics, Leiden University Medical Center, Leiden, The Netherlands
| | | | - Leo A.B. Joosten
- Department of Internal Medicine and Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Baziel G.M. van Engelen
- Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Ger J.M. Pruijn
- Department of Biomolecular Chemistry, Institute for Molecules and Materials, Radboud University, Nijmegen, The Netherlands
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41
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Beutgen VM, Schmelter C, Pfeiffer N, Grus FH. Contribution of the Commensal Microflora to the Immunological Homeostasis and the Importance of Immune-Related Drug Development for Clinical Applications. Int J Mol Sci 2021; 22:8896. [PMID: 34445599 PMCID: PMC8396286 DOI: 10.3390/ijms22168896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/16/2021] [Accepted: 08/17/2021] [Indexed: 11/16/2022] Open
Abstract
Not long ago, self-reactive immune activity was considered as pathological trait. A paradigm shift has now led to the recognition of autoimmune processes as part of natural maintenance of molecular homeostasis. The immune system is assigned further roles beneath the defense against pathogenic organisms. Regarding the humoral immune system, the investigation of natural autoantibodies that are frequently found in healthy individuals has led to further hypotheses involving natural autoimmunity in other processes as the clearing of cellular debris or decrease in inflammatory processes. However, their role and origin have not been entirely clarified, but accumulating evidence links their formation to immune reactions against the gut microbiome. Antibodies targeting highly conserved proteins of the commensal microflora are suggested to show self-reactive properties, following the paradigm of the molecular mimicry. Here, we discuss recent findings, which demonstrate potential links of the commensal microflora to the immunological homeostasis and highlight the possible implications for various diseases. Furthermore, specific components of the immune system, especially antibodies, have become a focus of attention for the medical management of various diseases and provide attractive treatment options in the future. Nevertheless, the development and optimization of such macromolecules still represents a very time-consuming task, shifting the need to more medical agents with simple structural properties and low manufacturing costs. Synthesizing only the biologically active sites of antibodies has become of great interest for the pharmaceutical industry and offers a wide range of therapeutic application areas as it will be discussed in the present review article.
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Affiliation(s)
| | | | | | - Franz H. Grus
- Experimental and Translational Ophthalmology, Department of Ophthalmology, University Medical Center, 55131 Mainz, Germany; (V.M.B.); (C.S.); (N.P.)
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42
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Abstract
B cells are traditionally known for their ability to produce antibodies in the context of adaptive immune responses. However, over the last decade B cells have been increasingly recognized as modulators of both adaptive and innate immune responses, as well as players in an important role in the pathogenesis of a variety of human diseases. Here, after briefly summarizing our current understanding of B cell biology, we present a systematic review of the literature from both animal models and human studies that highlight the important role that B lymphocytes play in cardiac and vascular disease. While many aspects of B cell biology in the vasculature and, to an even greater extent, in the heart remain unclear, B cells are emerging as key regulators of cardiovascular adaptation to injury.
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Affiliation(s)
- Luigi Adamo
- Center for Cardiovascular Research, Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri 63110, USA; , ,
| | - Cibele Rocha-Resende
- Center for Cardiovascular Research, Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri 63110, USA; , ,
| | - Douglas L Mann
- Center for Cardiovascular Research, Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri 63110, USA; , ,
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43
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Needham EJ, Stoevesandt O, Thelin EP, Zetterberg H, Zanier ER, Al Nimer F, Ashton NJ, Outtrim JG, Newcombe VFJ, Mousa HS, Simrén J, Blennow K, Yang Z, Hutchinson PJ, Piehl F, Helmy AE, Taussig MJ, Wang KKW, Jones JL, Menon DK, Coles AJ. Complex Autoantibody Responses Occur following Moderate to Severe Traumatic Brain Injury. THE JOURNAL OF IMMUNOLOGY 2021; 207:90-100. [PMID: 34145056 DOI: 10.4049/jimmunol.2001309] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 04/26/2021] [Indexed: 02/02/2023]
Abstract
Most of the variation in outcome following severe traumatic brain injury (TBI) remains unexplained by currently recognized prognostic factors. Neuroinflammation may account for some of this difference. We hypothesized that TBI generated variable autoantibody responses between individuals that would contribute to outcome. We developed a custom protein microarray to detect autoantibodies to both CNS and systemic Ags in serum from the acute-phase (the first 7 d), late (6-12 mo), and long-term (6-13 y) intervals after TBI in human patients. We identified two distinct patterns of immune response to TBI. The first was a broad response to the majority of Ags tested, predominantly IgM mediated in the acute phase, then IgG dominant at late and long-term time points. The second was responses to specific Ags, most frequently myelin-associated glycopeptide (MAG), which persisted for several months post-TBI but then subsequently resolved. Exploratory analyses suggested that patients with a greater acute IgM response experienced worse outcomes than predicted from current known risk factors, suggesting a direct or indirect role in worsening outcome. Furthermore, late persistence of anti-MAG IgM autoantibodies correlated with raised serum neurofilament light concentrations at these time points, suggesting an association with ongoing neurodegeneration over the first year postinjury. Our results show that autoantibody production occurs in some individuals following TBI, can persist for many years, and is associated with worse patient outcome. The complexity of responses means that conventional approaches based on measuring responses to single antigenic targets may be misleading.
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Affiliation(s)
- Edward J Needham
- Department of Clinical Neurosciences, University of Cambridge, United Kingdom; .,Division of Anaesthesia, Department of Medicine, University of Cambridge, United Kingdom
| | | | - Eric P Thelin
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden.,Department of Neurovascular Diseases, Karolinska University Hospital, Stockholm, Sweden.,Division of Academic Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge, United Kingdom
| | - Henrik Zetterberg
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden.,Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden.,Department of Neurodegenerative Disease, University College London Queen Square Institute of Neurology, London, United Kingdom.,United Kingdom Dementia Research Institute at University College London, London, United Kingdom
| | - Elisa R Zanier
- Dipartimento di Ricerca Neuroscienze, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Faiez Al Nimer
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Nicholas J Ashton
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden
| | - Joanne G Outtrim
- Division of Anaesthesia, Department of Medicine, University of Cambridge, United Kingdom
| | - Virginia F J Newcombe
- Division of Anaesthesia, Department of Medicine, University of Cambridge, United Kingdom.,Wolfson Brain Imaging Centre, University of Cambridge, United Kingdom; and
| | - Hani S Mousa
- Department of Clinical Neurosciences, University of Cambridge, United Kingdom
| | - Joel Simrén
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden
| | - Kaj Blennow
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, The Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden.,Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden
| | - Zhihui Yang
- Program for Neurotrauma, Neuroproteomics and Biomarker Research, Departments of Emergency Medicine, Psychiatry and Neuroscience, University of Florida, McKnight Brain Institute
| | - Peter J Hutchinson
- Division of Academic Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge, United Kingdom
| | - Fredrik Piehl
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Adel E Helmy
- Division of Academic Neurosurgery, Department of Clinical Neurosciences, University of Cambridge, Cambridge, United Kingdom
| | - Mike J Taussig
- Cambridge Protein Arrays Ltd., Cambridge, United Kingdom
| | - Kevin K W Wang
- Program for Neurotrauma, Neuroproteomics and Biomarker Research, Departments of Emergency Medicine, Psychiatry and Neuroscience, University of Florida, McKnight Brain Institute
| | - Joanne L Jones
- Department of Clinical Neurosciences, University of Cambridge, United Kingdom
| | - David K Menon
- Division of Anaesthesia, Department of Medicine, University of Cambridge, United Kingdom.,Wolfson Brain Imaging Centre, University of Cambridge, United Kingdom; and
| | - Alasdair J Coles
- Department of Clinical Neurosciences, University of Cambridge, United Kingdom
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Altered Blood Levels of Anti-Gal Antibodies in Alzheimer's Disease: A New Clue to Pathogenesis? Life (Basel) 2021; 11:life11060538. [PMID: 34207559 PMCID: PMC8228012 DOI: 10.3390/life11060538] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 06/05/2021] [Accepted: 06/06/2021] [Indexed: 12/19/2022] Open
Abstract
Alzheimer’s disease is a neurodegenerative disorder whose pathological mechanisms, despite recent advances, are not fully understood. However, the deposition of beta amyloid -peptide and neuroinflammation, which is probably aggravated by dysbiotic microbiota, seem to play a key role. Anti-Gal are the most abundant xenoreactive natural antibodies. They are supposed to stem from immunization against the gut microbiota and have been implicated in the pathogenesis of several diseases, including multiple sclerosis. These antibodies target the alpha-Gal epitope, expressed on the terminal sugar units of glycoprotein or glycolipid of all mammals except apes, Old World monkeys and humans. The alpha-Gal is constitutively expressed in several bacteria constituting the brain microbiota, and alpha-Gal-like epitopes have been detected in gray matter, amyloid plaque, neurofibrillary tangles and corpora amylacea of the human brain, suggesting a potential link between anti-Gal and Alzheimer’s disease etiopathogenesis. For the first time, our study searched for possible alterations of anti-Gal immunoglobulin levels in Alzheimer’s disease patients. IgG and IgM blood levels were significantly lower, and IgA significantly higher in patients than in healthy subjects. These results suggest that such immunoglobulins might be implicated in Alzheimer’s disease pathogenesis and open new scenarios in the research for new biomarkers and therapeutic strategies.
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45
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Chen YX, Shi C, Deng J, Diao C, Maarouf N, Rosin M, Shrivastava V, Hu AA, Bharadwa S, Adijiang A, Ulke-Lemee A, Gwilym B, Hellmich A, Malozzi C, Batulan Z, Dean JLE, Ramirez FD, Liu J, Gerthoffer WT, O’Brien ER. HSP25 Vaccination Attenuates Atherogenesis via Upregulation of LDLR Expression, Lowering of PCSK9 Levels and Curbing of Inflammation. Arterioscler Thromb Vasc Biol 2021; 41:e338-e353. [PMID: 33792343 PMCID: PMC8159870 DOI: 10.1161/atvbaha.121.315933] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
[Figure: see text].
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MESH Headings
- Aged
- Aged, 80 and over
- Animals
- Antibodies/blood
- Aorta/drug effects
- Aorta/enzymology
- Aorta/immunology
- Aorta/pathology
- Aortic Diseases/enzymology
- Aortic Diseases/immunology
- Aortic Diseases/pathology
- Aortic Diseases/prevention & control
- Atherosclerosis/enzymology
- Atherosclerosis/immunology
- Atherosclerosis/pathology
- Atherosclerosis/prevention & control
- Case-Control Studies
- Cholesterol/metabolism
- Disease Models, Animal
- Female
- Heat-Shock Proteins/administration & dosage
- Heat-Shock Proteins/immunology
- Heat-Shock Proteins/metabolism
- Hep G2 Cells
- Humans
- Immunogenicity, Vaccine
- Male
- Mice, Inbred C57BL
- Mice, Knockout, ApoE
- Middle Aged
- Molecular Chaperones/administration & dosage
- Molecular Chaperones/immunology
- Molecular Chaperones/metabolism
- Plaque, Atherosclerotic
- Proprotein Convertase 9/metabolism
- Receptors, LDL/genetics
- Receptors, LDL/metabolism
- Vaccination
- Vaccines, Synthetic/administration & dosage
- Vaccines, Synthetic/immunology
- Mice
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Affiliation(s)
- Yong-Xiang Chen
- Department of Cardiac Sciences, Libin Cardiovascular Institute, University of Calgary Cumming School of Medicine, Calgary, Alberta, Canada
| | - Chunhua Shi
- Department of Cardiac Sciences, Libin Cardiovascular Institute, University of Calgary Cumming School of Medicine, Calgary, Alberta, Canada
| | - Jingti Deng
- Department of Cardiac Sciences, Libin Cardiovascular Institute, University of Calgary Cumming School of Medicine, Calgary, Alberta, Canada
| | - Catherine Diao
- Department of Cardiac Sciences, Libin Cardiovascular Institute, University of Calgary Cumming School of Medicine, Calgary, Alberta, Canada
| | - Nadia Maarouf
- Department of Cardiac Sciences, Libin Cardiovascular Institute, University of Calgary Cumming School of Medicine, Calgary, Alberta, Canada
| | - Matthew Rosin
- Department of Cardiac Sciences, Libin Cardiovascular Institute, University of Calgary Cumming School of Medicine, Calgary, Alberta, Canada
| | - Vipul Shrivastava
- Department of Cardiac Sciences, Libin Cardiovascular Institute, University of Calgary Cumming School of Medicine, Calgary, Alberta, Canada
| | - Angie A. Hu
- Department of Cardiac Sciences, Libin Cardiovascular Institute, University of Calgary Cumming School of Medicine, Calgary, Alberta, Canada
| | - Sonya Bharadwa
- Department of Cardiac Sciences, Libin Cardiovascular Institute, University of Calgary Cumming School of Medicine, Calgary, Alberta, Canada
| | - Ayinuer Adijiang
- Department of Cardiac Sciences, Libin Cardiovascular Institute, University of Calgary Cumming School of Medicine, Calgary, Alberta, Canada
| | - Annegret Ulke-Lemee
- Department of Cardiac Sciences, Libin Cardiovascular Institute, University of Calgary Cumming School of Medicine, Calgary, Alberta, Canada
| | - Brenig Gwilym
- Department of Cardiac Sciences, Libin Cardiovascular Institute, University of Calgary Cumming School of Medicine, Calgary, Alberta, Canada
| | - Alexandria Hellmich
- Department of Biochemistry and Molecular Biology, University of South Alabama College of Medicine, Mobile, AL, USA
| | - Christopher Malozzi
- Department of Internal Medicine, University of South Alabama Medical Center, Mobile, AL, USA
| | - Zarah Batulan
- Department of Cardiac Sciences, Libin Cardiovascular Institute, University of Calgary Cumming School of Medicine, Calgary, Alberta, Canada
| | - Jonathan L. E. Dean
- Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - F. Daniel Ramirez
- University of Ottawa Heart Institute, Division of Cardiology, Ottawa, Ontario, Canada
| | - Jingwen Liu
- Department of Veterans Affairs Palo Alto Health Care System, Palo Alto, California
| | - William T. Gerthoffer
- Department of Biochemistry and Molecular Biology, University of South Alabama College of Medicine, Mobile, AL, USA
| | - Edward R. O’Brien
- Department of Cardiac Sciences, Libin Cardiovascular Institute, University of Calgary Cumming School of Medicine, Calgary, Alberta, Canada
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46
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Hsu YC, Tsai IJ, Hsu H, Hsu PW, Cheng MH, Huang YL, Chen JH, Lei MH, Lin CY. Using Anti-Malondialdehyde Modified Peptide Autoantibodies to Import Machine Learning for Predicting Coronary Artery Stenosis in Taiwanese Patients with Coronary Artery Disease. Diagnostics (Basel) 2021; 11:diagnostics11060961. [PMID: 34073646 PMCID: PMC8229983 DOI: 10.3390/diagnostics11060961] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 05/19/2021] [Accepted: 05/24/2021] [Indexed: 02/02/2023] Open
Abstract
Machine learning (ML) algorithms have been applied to predicting coronary artery disease (CAD). Our purpose was to utilize autoantibody isotypes against four different unmodified and malondialdehyde (MDA)-modified peptides among Taiwanese with CAD and healthy controls (HCs) for CAD prediction. In this study, levels of MDA, MDA-modified protein (MDA-protein) adducts, and autoantibody isotypes against unmodified peptides and MDA-modified peptides were measured with enzyme-linked immunosorbent assay (ELISA). To improve the performance of ML, we used decision tree (DT), random forest (RF), and support vector machine (SVM) coupled with five-fold cross validation and parameters optimization. Levels of plasma MDA and MDA-protein adducts were higher in CAD patients than in HCs. IgM anti-IGKC76-99 MDA and IgM anti-A1AT284-298 MDA decreased the most in patients with CAD compared to HCs. In the experimental results of CAD prediction, the decision tree classifier achieved an area under the curve (AUC) of 0.81; the random forest classifier achieved an AUC of 0.94; the support vector machine achieved an AUC of 0.65 for differentiating between CAD patients with stenosis rates of 70% and HCs. In this study, we demonstrated that autoantibody isotypes imported into machine learning algorithms can lead to accurate models for clinical use.
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Affiliation(s)
- Yu-Cheng Hsu
- Cardiovascular Center, Lo-Hsu Medical Foundation Luodong Poh-Ai Hospital, Yilan 26546, Taiwan;
| | - I-Jung Tsai
- Ph.D. Program in Medical Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan;
| | - Hung Hsu
- Medical Quality Department, Lo-Hsu Medical Foundation Luodong Poh-Ai Hospital, Yilan 26546, Taiwan;
| | - Po-Wen Hsu
- Preventive Medical Center, Lo-Hsu Medical Foundation Luodong Poh-Ai Hospital, Yilan 26546, Taiwan;
| | - Ming-Hui Cheng
- Department of Laboratory Medicine, Lo-Hsu Medical Foundation Luodong Poh-Ai Hospital, Yilan 26546, Taiwan;
| | - Ying-Li Huang
- Section of Laboratory, Lo-Hsu Medical Foundation Lodong Poh-Ai Hospital, Yilan 26546, Taiwan;
| | - Jin-Hua Chen
- Graduate Institute of Data Science, College of Management, Taipei Medical University, Taipei 11031, Taiwan;
- Statistics Center, Institutional Research Center, Office of Data Science, Taipei Medical University, Taipei 11031, Taiwan
| | - Meng-Huan Lei
- Cardiovascular Center, Lo-Hsu Medical Foundation Luodong Poh-Ai Hospital, Yilan 26546, Taiwan;
- Correspondence: (M.-H.L.); (C.-Y.L.); Tel.: +886-3-9543131 (ext. 2162) (M.-H.L.); +886-2-27361661 (ext. 3326) (C.-Y.L.)
| | - Ching-Yu Lin
- Ph.D. Program in Medical Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan;
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan
- Correspondence: (M.-H.L.); (C.-Y.L.); Tel.: +886-3-9543131 (ext. 2162) (M.-H.L.); +886-2-27361661 (ext. 3326) (C.-Y.L.)
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47
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Kaçar C, Kaya S, Kuru M, Erkılıç EE, Öğün M, Oral H, Demir MC. Determination of natural antibodies, beta-hydroxybutyric acid, and non-esterified fatty acid levels in the serum of peripartum Tuj and Hemşin sheep. Vet World 2021; 14:1002-1006. [PMID: 34083952 PMCID: PMC8167533 DOI: 10.14202/vetworld.2021.1002-1006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 03/04/2021] [Indexed: 11/22/2022] Open
Abstract
Background and Aim: Many metabolic and immunological changes occur during the transition period. Innate immunity plays an important role against to infections and natural antibodies (NAb) are important in immunity. This study aims to determine a connection between serum NAb titers, beta-hydroxybutyric acid (BHBA), and non-esterified fatty acid (NEFA) concentrations in Tuj and Hemşin sheep during the peripartum period. Materials and Methods: Serum NAb, BHBA, and NEFA levels were determined from the blood samples collected from Tuj and Hemşin sheep on days 30 and 15 before birth, on the day of birth (day 0), and on days 15 and 30 after birth. Results: NAb titers were found to be higher in Tuj than in Hemşin sheep (p<0.001). No statistically significant difference was found in serum BHBA concentrations of both breeds on all sampling days (p>0.05). The serum NEFA level was lower in Tuj sheep in the last 15 days of pregnancy compared to Hemşin sheep (p<0.05), while no difference was found in samples collected at the other time points. Conclusion: This study indicated that serum NAb titers significantly changed in Tuj and Hemşin sheep during the transition period. Serum BHBA and NEFA concentrations increased during the last stages of pregnancy and decreased after birth. Based on these findings, it is suggested that the immunological status could vary by the breed of sheep or various factors that affect the sheep’s metabolic state.
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Affiliation(s)
- Cihan Kaçar
- Department of Obstetrics and Gynecology, Faculty of Veterinary Medicine, Kafkas University, 36100 Kars, Turkey
| | - Semra Kaya
- Department of Obstetrics and Gynecology, Faculty of Veterinary Medicine, Kafkas University, 36100 Kars, Turkey
| | - Mushap Kuru
- Department of Obstetrics and Gynecology, Faculty of Veterinary Medicine, Kafkas University, 36100 Kars, Turkey
| | - Ekin Emre Erkılıç
- Department of Internal Medicine, Faculty of Veterinary Medicine, Kafkas University, 36100 Kars, Turkey
| | - Metin Öğün
- Department of Biochemistry, Faculty of Medicine, Kafkas University, 36100 Kars, Turkey
| | - Hasan Oral
- Department of Obstetrics and Gynecology, Faculty of Veterinary Medicine, Kafkas University, 36100 Kars, Turkey
| | - Murat Can Demir
- Department of Obstetrics and Gynecology, Faculty of Veterinary Medicine, Kafkas University, 36100 Kars, Turkey
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48
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Mouliou DS, Gourgoulianis KI. False-positive and false-negative COVID-19 cases: respiratory prevention and management strategies, vaccination, and further perspectives. Expert Rev Respir Med 2021; 15:993-1002. [PMID: 33896332 PMCID: PMC8074645 DOI: 10.1080/17476348.2021.1917389] [Citation(s) in RCA: 68] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Introduction: A novel Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) was reported via nucleic acid identification in December, 2019. Accuracy of SARS-CoV-2 diagnostic assays has emerged as a major barrier to COVID-19 diagnosis, particularly in cases requiring urgent or emergent treatment. Areas covered: In this review, we explore the major reasons for false-positive and false-negative SARS-CoV-2 test results. How clinical characteristics, specific respiratory comorbidities and SARS-CoV-2 vaccination impact on existing diagnostic assays are highlighted. Different COVID-19 management algorithms based on each test and limitations are thoroughly presented. Expert opinion: The diagnostic accuracy and the capacity of every available assay, which need to be interpreted in the light of the background incidence of SARS-CoV-2 infection in the communities in which they are used, are essential in order to minimize the number of falsely tested cases. Automated testing platforms may enhance diagnostic accuracy by minimizing the potential for human error in assays’ performance. Prior immunization against SARS-CoV-2 impairs the utility of serologic testing of suspected COVID-19 cases. Future avenues of research to evaluate lung tissue innate immune responses hold promise as a target for research to optimize SARS-CoV-2 and future infections’ testing accuracy.
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Affiliation(s)
- Dimitra S Mouliou
- Department of Respiratory Medicine, University of Thessaly, Larissa, Greece
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49
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Kyrklund M, Kaski H, Akhi R, Nissinen AE, Kummu O, Bergmann U, Pussinen P, Hörkkö S, Wang C. Existence of natural mouse IgG mAbs recognising epitopes shared by malondialdehyde acetaldehyde adducts and Porphyromonas gingivalis. Innate Immun 2021; 27:158-169. [PMID: 33445998 PMCID: PMC7882809 DOI: 10.1177/1753425920981133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Natural Abs are produced by B lymphocytes in the absence of external Ag stimulation. They recognise self, altered self and foreign Ags, comprising an important first-line defence against invading pathogens and serving as innate recognition receptors for tissue homeostasis. Natural IgG Abs have been found in newborns and uninfected individuals. Yet, their physiological role remains unclear. Previously, no natural IgG Abs to oxidation-specific epitopes have been reported. Here, we show the cloning and characterisation of mouse IgG mAbs against malondialdehyde acetaldehyde (MAA)-modified low-density lipoprotein. Sequence analysis reveals high homology with germline genes, suggesting that they are natural. Further investigation shows that the MAA-specific natural IgG Abs cross-react with the major periodontal pathogen Porphyromonas gingivalis and recognise its principle virulence factors gingipain Kgp and long fimbriae. The study provides evidence that natural IgGs may play an important role in innate immune defence and in regulation of tissue homeostasis by recognising and removing invading pathogens and/or modified self-Ags, thus being involved in the development of periodontitis and atherosclerosis.
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MESH Headings
- Acetaldehyde/chemistry
- Acetaldehyde/metabolism
- Animals
- Antibodies, Monoclonal/isolation & purification
- Antibodies, Monoclonal/metabolism
- Clone Cells
- Epitopes, B-Lymphocyte/metabolism
- Fimbriae Proteins/metabolism
- Gingipain Cysteine Endopeptidases/metabolism
- Immunity, Innate
- Immunoglobulin G/isolation & purification
- Immunoglobulin G/metabolism
- Lipoproteins, LDL/chemistry
- Lipoproteins, LDL/metabolism
- Malondialdehyde/chemistry
- Malondialdehyde/metabolism
- Mice
- Mice, Knockout
- Oxidation-Reduction
- Periodontitis/immunology
- Porphyromonas gingivalis/physiology
- Receptors, LDL/genetics
- Receptors, Pattern Recognition/isolation & purification
- Receptors, Pattern Recognition/metabolism
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Affiliation(s)
- Mikael Kyrklund
- Medical Microbiology and Immunology, Research Unit of Biomedicine, Faculty of Medicine, University of Oulu, Finland
- Medical Research Centre and Nordlab Oulu, University Hospital and University of Oulu, Finland
| | - Heidi Kaski
- Medical Microbiology and Immunology, Research Unit of Biomedicine, Faculty of Medicine, University of Oulu, Finland
| | - Ramin Akhi
- Medical Microbiology and Immunology, Research Unit of Biomedicine, Faculty of Medicine, University of Oulu, Finland
- Medical Research Centre and Nordlab Oulu, University Hospital and University of Oulu, Finland
| | - Antti E Nissinen
- Medical Microbiology and Immunology, Research Unit of Biomedicine, Faculty of Medicine, University of Oulu, Finland
- Medical Research Centre and Nordlab Oulu, University Hospital and University of Oulu, Finland
| | - Outi Kummu
- Medical Microbiology and Immunology, Research Unit of Biomedicine, Faculty of Medicine, University of Oulu, Finland
- Medical Research Centre and Nordlab Oulu, University Hospital and University of Oulu, Finland
| | - Ulrich Bergmann
- Protein Analysis Core Facility, Biocentre Oulu and Faculty of Biochemistry and Molecular Medicine, University of Oulu, Finland
| | - Pirkko Pussinen
- Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Finland
| | - Sohvi Hörkkö
- Medical Microbiology and Immunology, Research Unit of Biomedicine, Faculty of Medicine, University of Oulu, Finland
- Medical Research Centre and Nordlab Oulu, University Hospital and University of Oulu, Finland
| | - Chunguang Wang
- Medical Microbiology and Immunology, Research Unit of Biomedicine, Faculty of Medicine, University of Oulu, Finland
- Medical Research Centre and Nordlab Oulu, University Hospital and University of Oulu, Finland
- Minerva Foundation Institute for Medical Research, Biomedicum Helsinki 2U, Finland
- Chunguang Wang, Cardiovascular Research Unit, Minerva Foundation Institute for Medical Research, Biomedicum Helsinki 2U, Tukholmankatu 8, Helsinki 00290, Finland.
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50
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Frenkel LD, Gomez F, Bellanti JA. COVID-19 in children: Pathogenesis and current status. Allergy Asthma Proc 2021; 42:8-15. [PMID: 33404385 DOI: 10.2500/aap.2021.42.200104] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Background: Since its initial description in December 2019 in Wuhan, China, coronavirus disease 2019 (COVID-19) has rapidly progressed into a worldwide pandemic, which has affected millions of lives. Unlike the disease in adults, the vast majority of children with COVID-19 have mild symptoms and are largely spared from severe respiratory disease. However, there are children who have significant respiratory disease, and some may develop a hyperinflammatory response similar to that seen in adults with COVID-19 and in children with Kawasaki disease (KD), which has been termed multisystem inflammatory syndrome in children (MIS-C). Objective: The purpose of this report was to examine the current evidence that supports the etiopathogenesis of COVID-19 in children and the relationship of COVID-19 with KD and MIS-C as a basis for a better understanding of the clinical course, diagnosis, and management of these clinically perplexing conditions. Results: The pathogenesis of COVID-19 is carried out in two distinct but overlapping phases of COVID-19: the first triggered by the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) itself and the second by the host immune response. Children with KD have fewer of the previously described COVID-19-associated KD features with less prominent acute respiratory distress syndrome and shock than children with MIS-C. Conclusion: COVID-19 in adults usually includes severe respiratory symptoms and pathology, with a high mortality. It has become apparent that children are infected as easily as adults but are more often asymptomatic and have milder disease because of their immature immune systems. Although children are largely spared from severe respiratory disease, they can present with a SARS-CoV-2-associated MIS-C similar to KD.
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Affiliation(s)
- Lawrence D. Frenkel
- From the Department of Biomedical Sciences, University of Illinois College of Medicine, Chicago, Illinois
| | - Fernando Gomez
- Department of Biomedical Sciences, Rocky Vista University, Parker, Colorado
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