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Pongracz T, Mayboroda OA, Wuhrer M. The Human Blood N-Glycome: Unraveling Disease Glycosylation Patterns. JACS AU 2024; 4:1696-1708. [PMID: 38818049 PMCID: PMC11134357 DOI: 10.1021/jacsau.4c00043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 03/28/2024] [Accepted: 04/01/2024] [Indexed: 06/01/2024]
Abstract
Most of the proteins in the circulation are N-glycosylated, shaping together the total blood N-glycome (TBNG). Glycosylation is known to affect protein function, stability, and clearance. The TBNG is influenced by genetic, environmental, and metabolic factors, in part epigenetically imprinted, and responds to a variety of bioactive signals including cytokines and hormones. Accordingly, physiological and pathological events are reflected in distinct TBNG signatures. Here, we assess the specificity of the emerging disease-associated TBNG signatures with respect to a number of key glycosylation motifs including antennarity, linkage-specific sialylation, fucosylation, as well as expression of complex, hybrid-type and oligomannosidic N-glycans, and show perplexing complexity of the glycomic dimension of the studied diseases. Perspectives are given regarding the protein- and site-specific analysis of N-glycosylation, and the dissection of underlying regulatory layers and functional roles of blood protein N-glycosylation.
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Affiliation(s)
- Tamas Pongracz
- Center for Proteomics and Metabolomics, Leiden University Medical Center, 2333ZA Leiden, The Netherlands
| | - Oleg A. Mayboroda
- Center for Proteomics and Metabolomics, Leiden University Medical Center, 2333ZA Leiden, The Netherlands
| | - Manfred Wuhrer
- Center for Proteomics and Metabolomics, Leiden University Medical Center, 2333ZA Leiden, The Netherlands
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2
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Gupta P, Sághy T, Bollmann M, Jin T, Ohlsson C, Carlsten H, Corciulo C, Engdahl C. Local Immune Activation and Age Impact on Humoral Immunity in Mice, with a Focus on IgG Sialylation. Vaccines (Basel) 2024; 12:479. [PMID: 38793730 PMCID: PMC11125885 DOI: 10.3390/vaccines12050479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 04/22/2024] [Accepted: 04/27/2024] [Indexed: 05/26/2024] Open
Abstract
Age alters the host's susceptibility to immune induction. Humoral immunity with circulating antibodies, particularly immunoglobulin G (IgG), plays an essential role in immune response. IgG glycosylation in the fragment crystallizable (Fc) region, including sialylation, is important in regulating the effector function by interacting with Fc gamma receptors (FcγRs). Glycosylation is fundamentally changed with age and inflammatory responses. We aimed to explore the regulation of humoral immunity by comparing responses to antigen-induced immune challenges in young and adult mice using a local antigen-induced arthritis mouse model. This study examines the differences in immune response between healthy and immune-challenged states across these groups. Our initial assessment of the arthritis model indicated that adult mice presented more severe knee swelling than their younger counterparts. In contrast, we found that neither histological assessment, bone mineral density, nor the number of osteoclasts differs. Our data revealed an age-associated but not immune challenge increase in total IgG; the only subtype affected by immune challenge was IgG1 and partially IgG3. Interestingly, the sialylation of IgG2b and IgG3 is affected by age and immune challenges but not stimulated further by immune challenges in adult mice. This suggests a shift in IgG towards a pro-inflammatory and potentially pathogenic state with age and inflammation.
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Affiliation(s)
- Priti Gupta
- Department of Rheumatology and Inflammation Research, Sahlgrenska Academy, University of Gothenburg, 413 90 Gothenburg, Sweden; (P.G.); (T.S.); (M.B.); (T.J.); (H.C.)
- Department of Internal Medicine and Clinical Nutrition, Sahlgrenska Osteoporosis Centre and Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, 413 45 Gothenburg, Sweden;
- SciLifeLab, University of Gothenburg, 413 90 Gothenburg, Sweden
| | - Tibor Sághy
- Department of Rheumatology and Inflammation Research, Sahlgrenska Academy, University of Gothenburg, 413 90 Gothenburg, Sweden; (P.G.); (T.S.); (M.B.); (T.J.); (H.C.)
- Department of Internal Medicine and Clinical Nutrition, Sahlgrenska Osteoporosis Centre and Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, 413 45 Gothenburg, Sweden;
- SciLifeLab, University of Gothenburg, 413 90 Gothenburg, Sweden
| | - Miriam Bollmann
- Department of Rheumatology and Inflammation Research, Sahlgrenska Academy, University of Gothenburg, 413 90 Gothenburg, Sweden; (P.G.); (T.S.); (M.B.); (T.J.); (H.C.)
- SciLifeLab, University of Gothenburg, 413 90 Gothenburg, Sweden
| | - Tao Jin
- Department of Rheumatology and Inflammation Research, Sahlgrenska Academy, University of Gothenburg, 413 90 Gothenburg, Sweden; (P.G.); (T.S.); (M.B.); (T.J.); (H.C.)
- Department of Rheumatology, Sahlgrenska University Hospital, 413 46 Gothenburg, Sweden
| | - Claes Ohlsson
- Department of Internal Medicine and Clinical Nutrition, Sahlgrenska Osteoporosis Centre and Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, 413 45 Gothenburg, Sweden;
| | - Hans Carlsten
- Department of Rheumatology and Inflammation Research, Sahlgrenska Academy, University of Gothenburg, 413 90 Gothenburg, Sweden; (P.G.); (T.S.); (M.B.); (T.J.); (H.C.)
- Department of Rheumatology, Sahlgrenska University Hospital, 413 46 Gothenburg, Sweden
| | - Carmen Corciulo
- Department of Pharmacology, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, 405 30 Gothenburg, Sweden;
| | - Cecilia Engdahl
- Department of Rheumatology and Inflammation Research, Sahlgrenska Academy, University of Gothenburg, 413 90 Gothenburg, Sweden; (P.G.); (T.S.); (M.B.); (T.J.); (H.C.)
- Department of Internal Medicine and Clinical Nutrition, Sahlgrenska Osteoporosis Centre and Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, 413 45 Gothenburg, Sweden;
- SciLifeLab, University of Gothenburg, 413 90 Gothenburg, Sweden
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3
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Giron LB, Liu Q, Adeniji OS, Yin X, Kannan T, Ding J, Lu DY, Langan S, Zhang J, Azevedo JLLC, Li SH, Shalygin S, Azadi P, Hanna DB, Ofotokun I, Lazar J, Fischl MA, Haberlen S, Macatangay B, Adimora AA, Jamieson BD, Rinaldo C, Merenstein D, Roan NR, Kutsch O, Gange S, Wolinsky SM, Witt MD, Post WS, Kossenkov A, Landay AL, Frank I, Tien PC, Gross R, Brown TT, Abdel-Mohsen M. Immunoglobulin G N-glycan markers of accelerated biological aging during chronic HIV infection. Nat Commun 2024; 15:3035. [PMID: 38600088 PMCID: PMC11006954 DOI: 10.1038/s41467-024-47279-4] [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: 09/01/2023] [Accepted: 03/25/2024] [Indexed: 04/12/2024] Open
Abstract
People living with HIV (PLWH) experience increased vulnerability to premature aging and inflammation-associated comorbidities, even when HIV replication is suppressed by antiretroviral therapy (ART). However, the factors associated with this vulnerability remain uncertain. In the general population, alterations in the N-glycans on IgGs trigger inflammation and precede the onset of aging-associated diseases. Here, we investigate the IgG N-glycans in cross-sectional and longitudinal samples from 1214 women and men, living with and without HIV. PLWH exhibit an accelerated accumulation of pro-aging-associated glycan alterations and heightened expression of senescence-associated glycan-degrading enzymes compared to controls. These alterations correlate with elevated markers of inflammation and the severity of comorbidities, potentially preceding the development of such comorbidities. Mechanistically, HIV-specific antibodies glycoengineered with these alterations exhibit a reduced ability to elicit anti-HIV Fc-mediated immune activities. These findings hold potential for the development of biomarkers and tools to identify and prevent premature aging and comorbidities in PLWH.
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Affiliation(s)
| | - Qin Liu
- The Wistar Institute, Philadelphia, PA, USA
| | | | | | | | | | - David Y Lu
- The Wistar Institute, Philadelphia, PA, USA
- Cornell University, New York, NY, USA
| | | | | | | | - Shuk Hang Li
- University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | | | | | | | - Igho Ofotokun
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Jason Lazar
- SUNY Downstate Health Sciences University, New York, NY, USA
| | - Margaret A Fischl
- Division of Infectious Disease, Department of Medicine, University of Miami, Miami, FL, USA
| | | | | | | | | | | | | | - Nadia R Roan
- Gladstone Institutes, San Francisco, CA, USA
- University of California San Francisco, San Francisco, CA, USA
| | - Olaf Kutsch
- University of Alabama at Birmingham, Birmingham, AL, USA
| | | | | | - Mallory D Witt
- Lundquist Institute of Biomedical Research at Harbor-UCLA Medical Center, Torrance, CA, USA
| | | | | | | | - Ian Frank
- University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Phyllis C Tien
- University of California San Francisco, San Francisco, CA, USA
| | - Robert Gross
- University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
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4
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Benavente MCR, Hakeem ZA, Davis AR, Murray NB, Azadi P, Mace EM, Barb AW. Distinct CD16a features on human NK cells observed by flow cytometry correlate with increased ADCC. Sci Rep 2024; 14:7938. [PMID: 38575779 PMCID: PMC10995120 DOI: 10.1038/s41598-024-58541-6] [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: 09/08/2023] [Accepted: 04/01/2024] [Indexed: 04/06/2024] Open
Abstract
Natural killer (NK) cells destroy tissue that have been opsonized with antibodies. Strategies to generate or identify cells with increased potency are expected to enhance NK cell-based immunotherapies. We previously generated NK cells with increased antibody-dependent cell mediated cytotoxicity (ADCC) following treatment with kifunensine, an inhibitor targeting mannosidases early in the N-glycan processing pathway. Kifunensine treatment also increased the antibody-binding affinity of Fc γ receptor IIIa/CD16a. Here we demonstrate that inhibiting NK cell N-glycan processing increased ADCC. We reduced N-glycan processing with the CRIPSR-CAS9 knockdown of MGAT1, another early-stage N-glycan processing enzyme, and showed that these cells likewise increased antibody binding affinity and ADCC. These experiments led to the observation that NK cells with diminished N-glycan processing capability also revealed a clear phenotype in flow cytometry experiments using the B73.1 and 3G8 antibodies binding two distinct CD16a epitopes. We evaluated this "affinity profiling" approach using primary NK cells and identified a distinct shift and differentiated populations by flow cytometry that correlated with increased ADCC.
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Affiliation(s)
- Maria C Rodriguez Benavente
- Department of Biochemistry and Molecular Biology, University of Georgia, 120 E. Green St., 30602, Athens, GA, Georgia
| | - Zainab A Hakeem
- Department of Biochemistry and Molecular Biology, University of Georgia, 120 E. Green St., 30602, Athens, GA, Georgia
| | - Alexander R Davis
- Department of Biochemistry and Molecular Biology, University of Georgia, 120 E. Green St., 30602, Athens, GA, Georgia
| | - Nathan B Murray
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, Georgia
| | - Parastoo Azadi
- Department of Biochemistry and Molecular Biology, University of Georgia, 120 E. Green St., 30602, Athens, GA, Georgia
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, Georgia
| | - Emily M Mace
- Department of Pediatrics, Columbia University Irving Medical Center, New York, NY, USA
| | - Adam W Barb
- Department of Biochemistry and Molecular Biology, University of Georgia, 120 E. Green St., 30602, Athens, GA, Georgia.
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, Georgia.
- Department of Chemistry, University of Georgia, Athens, GA, Georgia.
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5
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Horvath S, Singh K, Raj K, Khairnar SI, Sanghavi A, Shrivastava A, Zoller JA, Li CZ, Herenu CB, Canatelli-Mallat M, Lehmann M, Habazin S, Novokmet M, Vučković F, Solberg Woods LC, Martinez AG, Wang T, Chiavellini P, Levine AJ, Chen H, Brooke RT, Gordevicius J, Lauc G, Goya RG, Katcher HL. Reversal of biological age in multiple rat organs by young porcine plasma fraction. GeroScience 2024; 46:367-394. [PMID: 37875652 PMCID: PMC10828479 DOI: 10.1007/s11357-023-00980-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 10/09/2023] [Indexed: 10/26/2023] Open
Abstract
Young blood plasma is known to confer beneficial effects on various organs in mice and rats. However, it was not known whether plasma from young adult pigs rejuvenates old rat tissues at the epigenetic level; whether it alters the epigenetic clock, which is a highly accurate molecular biomarker of aging. To address this question, we developed and validated six different epigenetic clocks for rat tissues that are based on DNA methylation values derived from n = 613 tissue samples. As indicated by their respective names, the rat pan-tissue clock can be applied to DNA methylation profiles from all rat tissues, while the rat brain, liver, and blood clocks apply to the corresponding tissue types. We also developed two epigenetic clocks that apply to both human and rat tissues by adding n = 1366 human tissue samples to the training data. We employed these six rat clocks to investigate the rejuvenation effects of a porcine plasma fraction treatment in different rat tissues. The treatment more than halved the epigenetic ages of blood, heart, and liver tissue. A less pronounced, but statistically significant, rejuvenation effect could be observed in the hypothalamus. The treatment was accompanied by progressive improvement in the function of these organs as ascertained through numerous biochemical/physiological biomarkers, behavioral responses encompassing cognitive functions. An immunoglobulin G (IgG) N-glycosylation pattern shift from pro- to anti-inflammatory also indicated reversal of glycan aging. Overall, this study demonstrates that a young porcine plasma-derived treatment markedly reverses aging in rats according to epigenetic clocks, IgG glycans, and other biomarkers of aging.
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Affiliation(s)
- Steve Horvath
- Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, CA, USA.
- Department of Biostatistics, Fielding School of Public Health, University of California, Los Angeles, CA, USA.
- Altos Labs, Cambridge, UK.
| | - Kavita Singh
- Shobhaben Pratapbhai Patel School of Pharmacy and Technology Management, SVKM's NMIMS University, Mumbai, India
| | | | - Shraddha I Khairnar
- Shobhaben Pratapbhai Patel School of Pharmacy and Technology Management, SVKM's NMIMS University, Mumbai, India
| | | | | | - Joseph A Zoller
- Department of Biostatistics, Fielding School of Public Health, University of California, Los Angeles, CA, USA
| | - Caesar Z Li
- Department of Biostatistics, Fielding School of Public Health, University of California, Los Angeles, CA, USA
| | - Claudia B Herenu
- Institute for Experimental Pharmacology of Cordoba (IFEC), School of Chemical Sciences, National University of Cordoba, Cordoba, Argentina
| | - Martina Canatelli-Mallat
- Biochemistry Research Institute of La Plata-Histology B, Pathology B, School of Medicine, University of La Plata, La Plata, Argentina
| | - Marianne Lehmann
- Biochemistry Research Institute of La Plata-Histology B, Pathology B, School of Medicine, University of La Plata, La Plata, Argentina
| | | | | | | | - Leah C Solberg Woods
- Wake Forest University School of Medicine, Medical Center Drive, Winston Salem, NC, USA
| | - Angel Garcia Martinez
- Department of Pharmacology, Addiction Science and Toxicology, The University of Tennessee Health Science Center, Memphis, TN, USA
| | - Tengfei Wang
- Department of Pharmacology, Addiction Science and Toxicology, The University of Tennessee Health Science Center, Memphis, TN, USA
| | - Priscila Chiavellini
- Biochemistry Research Institute of La Plata-Histology B, Pathology B, School of Medicine, University of La Plata, La Plata, Argentina
| | - Andrew J Levine
- Department of Neurology, David Geffen School of Medicine at the University of California, Los Angeles, CA, USA
| | - Hao Chen
- Department of Pharmacology, Addiction Science and Toxicology, The University of Tennessee Health Science Center, Memphis, TN, USA
| | | | | | - Gordan Lauc
- Genos Glycoscience Research Laboratory, Zagreb, Croatia
- Faculty of Pharmacy and Biochemistry, University of Zagreb, Zagreb, Croatia
| | - Rodolfo G Goya
- Biochemistry Research Institute of La Plata-Histology B, Pathology B, School of Medicine, University of La Plata, La Plata, Argentina
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6
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Ferro F, Spelat R, Pandit A, Martin-Ventura JL, Rabinovich GA, Contessotto P. Glycosylation of blood cells during the onset and progression of atherosclerosis and myocardial infarction. Trends Mol Med 2024; 30:178-196. [PMID: 38142190 DOI: 10.1016/j.molmed.2023.11.013] [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: 07/25/2023] [Revised: 10/27/2023] [Accepted: 11/24/2023] [Indexed: 12/25/2023]
Abstract
Protein glycosylation controls cell-cell and cell-extracellular matrix (ECM) communication in immune, vascular, and inflammatory processes, underlining the critical role of this process in the identification of disease biomarkers and the design of novel therapies. Emerging evidence highlights the critical role of blood cell glycosylation in the pathophysiology of atherosclerosis (ATH) and myocardial infarction (MI). Here, we review the role of glycosylation in the interplay between blood cells, particularly erythrocytes, and endothelial cells (ECs), highlighting the involvement of this critical post/cotranslational modification in settings of cardiovascular disease (CVD). Importantly, we focus on emerging preclinical studies and clinical trials based on glycan-targeted drugs to validate their therapeutic potential. These findings may help establish new trends in preventive medicine and delineate novel targeted therapies in CVD.
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Affiliation(s)
- Federico Ferro
- CÚRAM, SFI Research Centre for Medical Devices, University of Galway, Galway, Ireland; Department of Medicine, Surgery and Health Sciences, University of Trieste, Trieste, Italy
| | - Renza Spelat
- CÚRAM, SFI Research Centre for Medical Devices, University of Galway, Galway, Ireland; Neurobiology Sector, International School for Advanced Studies (SISSA), Trieste, Italy
| | - Abhay Pandit
- CÚRAM, SFI Research Centre for Medical Devices, University of Galway, Galway, Ireland
| | - José L Martin-Ventura
- Vascular Research Laboratory, IIS-Fundación Jiménez-Díaz, Madrid, Spain; CIBER de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain.
| | - Gabriel A Rabinovich
- Laboratorio de Glicomedicina, Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina; Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina.
| | - Paolo Contessotto
- CÚRAM, SFI Research Centre for Medical Devices, University of Galway, Galway, Ireland; Department of Molecular Medicine, University of Padua, Padua, Italy.
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7
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Giron LB, Liu Q, Adeniji OS, Yin X, Kannan T, Ding J, Lu DY, Langan S, Zhang J, Azevedo JLLC, Li SH, Shalygin S, Azadi P, Hanna DB, Ofotokun I, Lazar J, Fischl MA, Haberlen S, Macatangay B, Adimora AA, Jamieson BD, Rinaldo C, Merenstein D, Roan NR, Kutsch O, Gange S, Wolinsky S, Witt M, Post WS, Kossenkov A, Landay A, Frank I, Tien PC, Gross R, Brown TT, Abdel-Mohsen M. Plasma Glycomic Markers of Accelerated Biological Aging During Chronic HIV Infection. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.09.551369. [PMID: 37609144 PMCID: PMC10441429 DOI: 10.1101/2023.08.09.551369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
People with HIV (PWH) experience an increased vulnerability to premature aging and inflammation-associated comorbidities, even when HIV replication is suppressed by antiretroviral therapy (ART). However, the factors that contribute to or are associated with this vulnerability remain uncertain. In the general population, alterations in the glycomes of circulating IgGs trigger inflammation and precede the onset of aging-associated diseases. Here, we investigate the IgG glycomes of cross-sectional and longitudinal samples from 1,216 women and men, both living with virally suppressed HIV and those without HIV. Our glycan-based machine learning models indicate that living with chronic HIV significantly accelerates the accumulation of pro-aging-associated glycomic alterations. Consistently, PWH exhibit heightened expression of senescence-associated glycan-degrading enzymes compared to their controls. These glycomic alterations correlate with elevated markers of inflammatory aging and the severity of comorbidities, potentially preceding the development of such comorbidities. Mechanistically, HIV-specific antibodies glycoengineered with these alterations exhibit reduced anti-HIV IgG-mediated innate immune functions. These findings hold significant potential for the development of glycomic-based biomarkers and tools to identify and prevent premature aging and comorbidities in people living with chronic viral infections.
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Affiliation(s)
| | - Qin Liu
- The Wistar Institute, Philadelphia, PA, USA
| | | | | | | | | | - David Y. Lu
- The Wistar Institute, Philadelphia, PA, USA
- Cornell University, New York, NY, USA
| | | | | | | | - Shuk Hang Li
- University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | | | | | | | - Igho Ofotokun
- Division of Infectious Diseases, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - Jason Lazar
- SUNY Downstate Health Sciences University, New York, NY, USA
| | | | | | | | | | | | | | | | - Nadia R. Roan
- Gladstone Institutes, San Francisco, CA, USA
- University of California San Francisco, San Francisco, CA, USA
| | - Olaf Kutsch
- University of Alabama at Birmingham, Birmingham, Alabama, USA
| | | | | | - Mallory Witt
- Los Angeles Biomedical Research Institute, Torrance, CA, USA
| | | | | | | | - Ian Frank
- University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Phyllis C. Tien
- University of California San Francisco, San Francisco, CA, USA
| | - Robert Gross
- University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
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8
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Lado-Baleato Ó, Torre J, O’Flaherty R, Alonso-Sampedro M, Carballo I, Fernández-Merino C, Vidal C, Gude F, Saldova R, González-Quintela A. Age-Related Changes in Serum N-Glycome in Men and Women-Clusters Associated with Comorbidity. Biomolecules 2023; 14:17. [PMID: 38254617 PMCID: PMC10813383 DOI: 10.3390/biom14010017] [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: 11/15/2023] [Revised: 12/17/2023] [Accepted: 12/18/2023] [Indexed: 01/24/2024] Open
Abstract
(1) Aim: To describe, in a general adult population, the serum N-glycome in relation to age in men and women, and investigate the association of N-glycome patterns with age-related comorbidity; (2) Methods: The serum N-glycome was studied by hydrophilic interaction chromatography with ultra-performance liquid chromatography in 1516 randomly selected adults (55.3% women; age range 18-91 years). Covariates included lifestyle factors, metabolic disorders, inflammatory markers, and an index of comorbidity. Principal component analysis was used to define clusters of individuals based on the 46 glycan peaks obtained in chromatograms; (3) Results: The serum N-glycome changed with ageing, with significant differences between men and women, both in individual N-glycan peaks and in groups defined by common features (branching, galactosylation, sialylation, fucosylation, and oligomannose). Through K-means clustering algorithm, the individuals were grouped into a cluster characterized by abundance of simpler N-glycans and a cluster characterized by abundance of higher-order N-glycans. The individuals of the first cluster were older, showed higher concentrations of glucose and glycation markers, higher levels of some inflammatory markers, lower glomerular filtration rate, and greater comorbidity index; (4) Conclusions: The serum N-glycome changes with ageing with sex dimorphism. The N-glycome could be, in line with the inflammaging hypothesis, a marker of unhealthy aging.
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Affiliation(s)
- Óscar Lado-Baleato
- Research Methodology Group, Health Research Institute of Santiago de Compostela (IDIS), Galician Health Service, University of Santiago de Compostela, 15706 Santiago de Compostela, Spain; (Ó.L.-B.); (J.T.); (M.A.-S.); (I.C.); (C.F.-M.); (C.V.); (F.G.)
- ISCIII Support Platforms for Clinical Research, Health Research Institute of Santiago de Compostela (IDIS), Galician Health Service, University of Santiago de Compostel, 15706 Santiago de Compostela, Spain
| | - Jorge Torre
- Research Methodology Group, Health Research Institute of Santiago de Compostela (IDIS), Galician Health Service, University of Santiago de Compostela, 15706 Santiago de Compostela, Spain; (Ó.L.-B.); (J.T.); (M.A.-S.); (I.C.); (C.F.-M.); (C.V.); (F.G.)
| | - Róisín O’Flaherty
- GlycoScience Group, National Institute for Bioprocessing Research and Training, Fosters Avenue, A94 X099 Dublin, Ireland (R.S.)
- Department of Chemistry, Maynooth University, W23 F2K8 Maynooth, Ireland
| | - Manuela Alonso-Sampedro
- Research Methodology Group, Health Research Institute of Santiago de Compostela (IDIS), Galician Health Service, University of Santiago de Compostela, 15706 Santiago de Compostela, Spain; (Ó.L.-B.); (J.T.); (M.A.-S.); (I.C.); (C.F.-M.); (C.V.); (F.G.)
| | - Iago Carballo
- Research Methodology Group, Health Research Institute of Santiago de Compostela (IDIS), Galician Health Service, University of Santiago de Compostela, 15706 Santiago de Compostela, Spain; (Ó.L.-B.); (J.T.); (M.A.-S.); (I.C.); (C.F.-M.); (C.V.); (F.G.)
| | - Carmen Fernández-Merino
- Research Methodology Group, Health Research Institute of Santiago de Compostela (IDIS), Galician Health Service, University of Santiago de Compostela, 15706 Santiago de Compostela, Spain; (Ó.L.-B.); (J.T.); (M.A.-S.); (I.C.); (C.F.-M.); (C.V.); (F.G.)
- Primary Care, Santiago de Compostela Area, 15706 Santiago de Compostela, Spain
| | - Carmen Vidal
- Research Methodology Group, Health Research Institute of Santiago de Compostela (IDIS), Galician Health Service, University of Santiago de Compostela, 15706 Santiago de Compostela, Spain; (Ó.L.-B.); (J.T.); (M.A.-S.); (I.C.); (C.F.-M.); (C.V.); (F.G.)
| | - Francisco Gude
- Research Methodology Group, Health Research Institute of Santiago de Compostela (IDIS), Galician Health Service, University of Santiago de Compostela, 15706 Santiago de Compostela, Spain; (Ó.L.-B.); (J.T.); (M.A.-S.); (I.C.); (C.F.-M.); (C.V.); (F.G.)
- Primary Care, Santiago de Compostela Area, 15706 Santiago de Compostela, Spain
| | - Radka Saldova
- GlycoScience Group, National Institute for Bioprocessing Research and Training, Fosters Avenue, A94 X099 Dublin, Ireland (R.S.)
- UCD School of Medicine, College of Health and Agricultural Science, University College Dublin, D04 V1W8 Dublin, Ireland
| | - Arturo González-Quintela
- Research Methodology Group, Health Research Institute of Santiago de Compostela (IDIS), Galician Health Service, University of Santiago de Compostela, 15706 Santiago de Compostela, Spain; (Ó.L.-B.); (J.T.); (M.A.-S.); (I.C.); (C.F.-M.); (C.V.); (F.G.)
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9
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Wolf B, Blaschke CRK, Mungaray S, Weselman BT, Stefanenko M, Fedoriuk M, Bai H, Rodgers J, Palygin O, Drake RR, Nowling TK. Metabolic Markers and Association of Biological Sex in Lupus Nephritis. Int J Mol Sci 2023; 24:16490. [PMID: 38003679 PMCID: PMC10671813 DOI: 10.3390/ijms242216490] [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: 10/06/2023] [Revised: 11/08/2023] [Accepted: 11/10/2023] [Indexed: 11/26/2023] Open
Abstract
Lupus nephritis (LN) is a serious complication for many patients who develop systemic lupus erythematosus, which primarily afflicts women. Our studies to identify biomarkers and the pathogenic mechanisms underlying LN will provide a better understanding of disease progression and sex bias, and lead to identification of additional potential therapeutic targets. The glycosphingolipid lactosylceramide (LacCer) and N-linked glycosylated proteins (N-glycans) were measured in urine and serum collected from LN and healthy control (HC) subjects (10 females and 10 males in each group). The sera from the LN and HC subjects were used to stimulate cytokine secretion and intracellular Ca2+ flux in female- and male-derived primary human renal mesangial cells (hRMCs). Significant differences were observed in the urine of LN patients compared to HCs. All major LacCers species were significantly elevated and differences between LN and HC were more pronounced in males. 72 individual N-glycans were altered in LN compared to HC and three N-glycans were significantly different between the sexes. In hRMCs, Ca2+ flux, but not cytokine secretion, was higher in response to LN sera compared to HC sera. Ca2+ flux, cytokine secretion, and glycosphingolipid levels were significantly higher in female-derived compared to male-derived hRMCs. Relative abundance of some LacCers and hexosylceramides were higher in female-derived compared to male-derived hRMCs. Urine LacCers and N-glycome could serve as definitive LN biomarkers and likely reflect renal disease activity. Despite higher sensitivity of female hRMCs, males may experience greater increases in LacCers, which may underscore worse disease in males. Elevated glycosphingolipid metabolism may poise renal cells to be more sensitive to external stimuli.
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Affiliation(s)
- Bethany Wolf
- Department of Public Health Sciences, Medical University of South Carolina, 135 Cannon Street, Suite 303 MSC 835, Charleston, SC 29425, USA;
| | - Calvin R. K. Blaschke
- Department of Cell and Molecular Pharmacology and Experimental Therapeutics, Medical University of South Carolina, 173 Ashley Avenue Basic Science Building 358, Charleston, SC 29425, USA (B.T.W.); (H.B.); (R.R.D.)
| | - Sandy Mungaray
- Division of Rheumatology, Department of Medicine, Medical University of South Carolina, 171 Ashley Avenue, Charleston, SC 29425, USA; (S.M.); (J.R.)
| | - Bryan T. Weselman
- Department of Cell and Molecular Pharmacology and Experimental Therapeutics, Medical University of South Carolina, 173 Ashley Avenue Basic Science Building 358, Charleston, SC 29425, USA (B.T.W.); (H.B.); (R.R.D.)
| | - Mariia Stefanenko
- Division of Nephrology, Department of Medicine, Medical University of South Carolina, Clinical Sciences Building, 96 Jonathan Lucas Street, Charleston, SC 29425, USA; (M.S.); (M.F.); (O.P.)
| | - Mykhailo Fedoriuk
- Division of Nephrology, Department of Medicine, Medical University of South Carolina, Clinical Sciences Building, 96 Jonathan Lucas Street, Charleston, SC 29425, USA; (M.S.); (M.F.); (O.P.)
| | - Hongxia Bai
- Department of Cell and Molecular Pharmacology and Experimental Therapeutics, Medical University of South Carolina, 173 Ashley Avenue Basic Science Building 358, Charleston, SC 29425, USA (B.T.W.); (H.B.); (R.R.D.)
| | - Jessalyn Rodgers
- Division of Rheumatology, Department of Medicine, Medical University of South Carolina, 171 Ashley Avenue, Charleston, SC 29425, USA; (S.M.); (J.R.)
| | - Oleg Palygin
- Division of Nephrology, Department of Medicine, Medical University of South Carolina, Clinical Sciences Building, 96 Jonathan Lucas Street, Charleston, SC 29425, USA; (M.S.); (M.F.); (O.P.)
| | - Richard R. Drake
- Department of Cell and Molecular Pharmacology and Experimental Therapeutics, Medical University of South Carolina, 173 Ashley Avenue Basic Science Building 358, Charleston, SC 29425, USA (B.T.W.); (H.B.); (R.R.D.)
| | - Tamara K. Nowling
- Division of Rheumatology, Department of Medicine, Medical University of South Carolina, 171 Ashley Avenue, Charleston, SC 29425, USA; (S.M.); (J.R.)
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10
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Lukšić F, Mijakovac A, Josipović G, Vičić Bočkor V, Krištić J, Cindrić A, Vinicki M, Rokić F, Vugrek O, Lauc G, Zoldoš V. Long-Term Culturing of FreeStyle 293-F Cells Affects Immunoglobulin G Glycome Composition. Biomolecules 2023; 13:1245. [PMID: 37627310 PMCID: PMC10452533 DOI: 10.3390/biom13081245] [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: 07/14/2023] [Revised: 08/09/2023] [Accepted: 08/12/2023] [Indexed: 08/27/2023] Open
Abstract
Glycosylation of IgG regulates the effector function of this antibody in the immune response. Glycosylated IgG is a potent therapeutic used for both research and clinical purposes. While there is ample research on how different cell culture conditions affect IgG glycosylation, the data are missing on the stability of IgG glycome during long cell passaging, i.e., cell "aging". To test this, we performed three independent time course experiments in FreeStyle 293-F cells, which secrete IgG with a human-like glycosylation pattern and are frequently used to generate defined IgG glycoforms. During long-term cell culturing, IgG glycome stayed fairly stable except for galactosylation, which appeared extremely variable. Cell transcriptome analysis revealed no correlation in galactosyltransferase B4GALT1 expression with galactosylation change, but with expression of EEF1A1 and SLC38A10, genes previously associated with IgG galactosylation through GWAS. The FreeStyle 293-F cell-based system for IgG production is a good model for studies of mechanisms underlying IgG glycosylation, but results from the present study point to the utmost importance of the need to control IgG galactosylation in both in vitro and in vivo systems. This is especially important for improving the production of precisely glycosylated IgG for therapeutic purposes, since IgG galactosylation affects the inflammatory potential of IgG.
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Affiliation(s)
- Fran Lukšić
- Department of Biology, Faculty of Science, University of Zagreb, 10000 Zagreb, Croatia
| | - Anika Mijakovac
- Department of Biology, Faculty of Science, University of Zagreb, 10000 Zagreb, Croatia
- Genos Glycoscience Research Laboratory, 10000 Zagreb, Croatia
| | - Goran Josipović
- Genos Glycoscience Research Laboratory, 10000 Zagreb, Croatia
| | - Vedrana Vičić Bočkor
- Department of Biology, Faculty of Science, University of Zagreb, 10000 Zagreb, Croatia
- Genos Glycoscience Research Laboratory, 10000 Zagreb, Croatia
| | | | - Ana Cindrić
- Genos Glycoscience Research Laboratory, 10000 Zagreb, Croatia
| | - Martina Vinicki
- Genos Glycoscience Research Laboratory, 10000 Zagreb, Croatia
| | - Filip Rokić
- Laboratory for Advanced Genomics, Division of Molecular Medicine, Ruđer Bošković Institute, 10000 Zagreb, Croatia
| | - Oliver Vugrek
- Laboratory for Advanced Genomics, Division of Molecular Medicine, Ruđer Bošković Institute, 10000 Zagreb, Croatia
| | - Gordan Lauc
- Genos Glycoscience Research Laboratory, 10000 Zagreb, Croatia
- Department of Biochemistry and Molecular Biology, Faculty of Pharmacy and Biochemistry, University of Zagreb, 10000 Zagreb, Croatia
| | - Vlatka Zoldoš
- Department of Biology, Faculty of Science, University of Zagreb, 10000 Zagreb, Croatia
- Genos Glycoscience Research Laboratory, 10000 Zagreb, Croatia
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11
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Horvath S, Singh K, Raj K, Khairnar S, Sanghavi A, Shrivastava A, Zoller JA, Li CZ, Herenu CB, Canatelli-Mallat M, Lehmann M, Habazin S, Novokmet M, Vučković F, Woods LCS, Martinez AG, Wang T, Chiavellini P, Levine AJ, Chen H, Brooke RT, Gordevicius J, Lauc G, Goya RG, Katcher HL. Reversal of Biological Age in Multiple Rat Organs by Young Porcine Plasma Fraction. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.06.552148. [PMID: 37609328 PMCID: PMC10441355 DOI: 10.1101/2023.08.06.552148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
Young blood plasma is known to confer beneficial effects on various organs in mice and rats. However, it was not known whether plasma from young pigs rejuvenates old rat tissues at the epigenetic level; whether it alters the epigenetic clock, which is a highly accurate molecular biomarker of aging. To address this question, we developed and validated six different epigenetic clocks for rat tissues that are based on DNA methylation values derived from n=613 tissue samples. As indicated by their respective names, the rat pan-tissue clock can be applied to DNA methylation profiles from all rat tissues, while the rat brain-, liver-, and blood clocks apply to the corresponding tissue types. We also developed two epigenetic clocks that apply to both human and rat tissues by adding n=1366 human tissue samples to the training data. We employed these six rat clocks to investigate the rejuvenation effects of a porcine plasma fraction treatment in different rat tissues. The treatment more than halved the epigenetic ages of blood, heart, and liver tissue. A less pronounced, but statistically significant, rejuvenation effect could be observed in the hypothalamus. The treatment was accompanied by progressive improvement in the function of these organs as ascertained through numerous biochemical/physiological biomarkers and behavioral responses to assess cognitive functions. An immunoglobulin G (IgG) N-glycosylation pattern shift from pro- to anti-inflammatory also indicated reversal of glycan aging. Overall, this study demonstrates that a young porcine plasma-derived treatment markedly reverses aging in rats according to epigenetic clocks, IgG glycans, and other biomarkers of aging.
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Affiliation(s)
- Steve Horvath
- Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
- Department of Biostatistics, Fielding School of Public Health, University of California, Los Angeles, Los Angeles, California, USA
- Altos Labs, Cambridge, UK
| | - Kavita Singh
- Shobhaben Pratapbhai Patel School of Pharmacy and Technology Management, SVKM’S NMIMS University, Mumbai, India
| | | | - Shraddha Khairnar
- Shobhaben Pratapbhai Patel School of Pharmacy and Technology Management, SVKM’S NMIMS University, Mumbai, India
| | | | | | - Joseph A. Zoller
- Department of Biostatistics, Fielding School of Public Health, University of California, Los Angeles, Los Angeles, California, USA
| | - Caesar Z. Li
- Department of Biostatistics, Fielding School of Public Health, University of California, Los Angeles, Los Angeles, California, USA
| | - Claudia B. Herenu
- Institute for Experimental Pharmacology of Cordoba (IFEC), School of Chemical Sciences, National University of Cordoba, Cordoba, Argentina
| | - Martina Canatelli-Mallat
- Biochemistry Research Institute of La Plata – Histology B, Pathology B, School of Medicine, University of La Plata, La Plata CC 455 (zip 1900), Argentina
| | - Marianne Lehmann
- Biochemistry Research Institute of La Plata – Histology B, Pathology B, School of Medicine, University of La Plata, La Plata CC 455 (zip 1900), Argentina
| | | | | | | | - Leah C. Solberg Woods
- Wake Forest University School of Medicine, 1 Medical Center Drive, Winston Salem, NC 27157, USA
| | - Angel Garcia Martinez
- Department of Pharmacology, Addiction Science and Toxicology, The University of Tennessee Health Science Center, Memphis, TN 3993, USA
| | - Tengfei Wang
- Department of Pharmacology, Addiction Science and Toxicology, The University of Tennessee Health Science Center, Memphis, TN 3993, USA
| | - Priscila Chiavellini
- Biochemistry Research Institute of La Plata – Histology B, Pathology B, School of Medicine, University of La Plata, La Plata CC 455 (zip 1900), Argentina
| | - Andrew J. Levine
- Department of Neurology, David Geffen School of Medicine at the University of California, Los Angeles, CA, 90095, USA
| | - Hao Chen
- Department of Pharmacology, Addiction Science and Toxicology, The University of Tennessee Health Science Center, Memphis, TN 3993, USA
| | - Robert T Brooke
- Epigenetic Clock Development Foundation, Torrance, California, USA
| | | | - Gordan Lauc
- Genos Glycoscience Research Laboratory, Zagreb, Croatia
- Faculty of Pharmacy and Biochemistry, University of Zagreb, Zagreb, Croatia
| | - Rodolfo G. Goya
- Biochemistry Research Institute of La Plata – Histology B, Pathology B, School of Medicine, University of La Plata, La Plata CC 455 (zip 1900), Argentina
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12
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Monzó C, Gkioni L, Beyer A, Valenzano DR, Grönke S, Partridge L. Dietary restriction mitigates the age-associated decline in mouse B cell receptor repertoire diversity. Cell Rep 2023; 42:112722. [PMID: 37384530 PMCID: PMC10391628 DOI: 10.1016/j.celrep.2023.112722] [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: 01/16/2023] [Revised: 05/07/2023] [Accepted: 06/13/2023] [Indexed: 07/01/2023] Open
Abstract
Aging impairs the capacity to respond to novel antigens, reducing immune protection against pathogens and vaccine efficacy. Dietary restriction (DR) extends life- and health span in diverse animals. However, little is known about the capacity of DR to combat the decline in immune function. Here, we study the changes in B cell receptor (BCR) repertoire during aging in DR and control mice. By sequencing the variable region of the BCR heavy chain in the spleen, we show that DR preserves diversity and attenuates the increase in clonal expansions throughout aging. Remarkably, mice starting DR in mid-life have repertoire diversity and clonal expansion rates indistinguishable from chronic DR mice. In contrast, in the intestine, these traits are unaffected by either age or DR. Reduced within-individual B cell repertoire diversity and increased clonal expansions are correlated with higher morbidity, suggesting a potential contribution of B cell repertoire dynamics to health during aging.
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Affiliation(s)
- Carolina Monzó
- Department Biological Mechanisms of Ageing, Max Planck Institute for Biology of Ageing, 50931 Cologne, North Rhine Westphalia, Germany; Cologne Excellence Cluster on Cellular Stress Responses in Age-Associated Diseases (CECAD), Faculty of Medicine and Faculty of Mathematics and Natural Sciences, University of Cologne, 50931 Cologne, Germany
| | - Lisonia Gkioni
- Department Biological Mechanisms of Ageing, Max Planck Institute for Biology of Ageing, 50931 Cologne, North Rhine Westphalia, Germany
| | - Andreas Beyer
- Cologne Excellence Cluster on Cellular Stress Responses in Age-Associated Diseases (CECAD), Faculty of Medicine and Faculty of Mathematics and Natural Sciences, University of Cologne, 50931 Cologne, Germany
| | - Dario Riccardo Valenzano
- Microbiome-Host Interactions in Ageing Group, Max Planck Institute for Biology of Ageing, 50931 Cologne, North Rhine Westphalia, Germany; Evolutionary Biology/Microbiome-Host Interactions in Aging Group: Fritz Lipmann Institute - Leibniz Institute on Aging, 07745 Jena, Thuringia, Germany.
| | - Sebastian Grönke
- Department Biological Mechanisms of Ageing, Max Planck Institute for Biology of Ageing, 50931 Cologne, North Rhine Westphalia, Germany.
| | - Linda Partridge
- Department Biological Mechanisms of Ageing, Max Planck Institute for Biology of Ageing, 50931 Cologne, North Rhine Westphalia, Germany; Genetics, Evolution & Environment Group, Institute of Healthy Ageing, University College London, London WC1E 6BT, UK.
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13
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Purcell RA, Theisen RM, Arnold KB, Chung AW, Selva KJ. Polyfunctional antibodies: a path towards precision vaccines for vulnerable populations. Front Immunol 2023; 14:1183727. [PMID: 37600816 PMCID: PMC10433199 DOI: 10.3389/fimmu.2023.1183727] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 05/30/2023] [Indexed: 08/22/2023] Open
Abstract
Vaccine efficacy determined within the controlled environment of a clinical trial is usually substantially greater than real-world vaccine effectiveness. Typically, this results from reduced protection of immunologically vulnerable populations, such as children, elderly individuals and people with chronic comorbidities. Consequently, these high-risk groups are frequently recommended tailored immunisation schedules to boost responses. In addition, diverse groups of healthy adults may also be variably protected by the same vaccine regimen. Current population-based vaccination strategies that consider basic clinical parameters offer a glimpse into what may be achievable if more nuanced aspects of the immune response are considered in vaccine design. To date, vaccine development has been largely empirical. However, next-generation approaches require more rational strategies. We foresee a generation of precision vaccines that consider the mechanistic basis of vaccine response variations associated with both immunogenetic and baseline health differences. Recent efforts have highlighted the importance of balanced and diverse extra-neutralising antibody functions for vaccine-induced protection. However, in immunologically vulnerable populations, significant modulation of polyfunctional antibody responses that mediate both neutralisation and effector functions has been observed. Here, we review the current understanding of key genetic and inflammatory modulators of antibody polyfunctionality that affect vaccination outcomes and consider how this knowledge may be harnessed to tailor vaccine design for improved public health.
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Affiliation(s)
- Ruth A. Purcell
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, VIC, Australia
| | - Robert M. Theisen
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, United States
| | - Kelly B. Arnold
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, United States
| | - Amy W. Chung
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, VIC, Australia
| | - Kevin J. Selva
- Department of Microbiology and Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, VIC, Australia
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14
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Gupta P, Hu Z, Kopparapu PK, Deshmukh M, Sághy T, Mohammad M, Jin T, Engdahl C. The impact of TLR2 and aging on the humoral immune response to Staphylococcus aureus bacteremia in mice. Sci Rep 2023; 13:8850. [PMID: 37258615 DOI: 10.1038/s41598-023-35970-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 05/26/2023] [Indexed: 06/02/2023] Open
Abstract
Aging alters immunoglobulin production, affecting the humoral immune response. Toll-like receptor 2 (TLR2) recognizes Staphylococcus aureus (S. aureus) which causes bacteremia with high mortality in the elderly. To understand how TLR2 and aging affect the humoral immune response in bacteremia, four groups of mice (wild type-young, wild type-old, TLR2-/--young, and TLR2-/--old) were used to analyze immunoglobulin levels in healthy conditions as well as 10 days after intravenous injection with S. aureus. We found that aging increased the levels of both IgM and IgG. Increased IgG in aged mice was controlled by TLR2. In bacteremia infection, aged mice failed to mount proper IgM response in both wild-type (WT) and TLR2-/- mice, whereas IgG response was impaired in both aged and TLR2-/- mice. Aged mice displayed reduced IgG1 and IgG2a response irrespective of TLR2 expression. However, impaired IgG2b response was only found in aged WT mice and not in TLR2-/- mice. Both aging and TLR2-/- increased the levels of anti-staphylococcal IgM in bacteremia. Aging increased sialylated IgG in WT mice but not in TLR2-/- mice. IgG sialylation was not affected by the infection in neither of the mice. In summary, aging increases all immunoglobulins except IgG1. However, aged mice fail to mount a proper antibody response to S. aureus bacteremia. TLR2 plays the regulatory role in IgG but not IgM response to infection.
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Affiliation(s)
- Priti Gupta
- Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Box- 480, 413 45, Gothenburg, Sweden.
- Department of Internal Medicine and Clinical Nutrition, Sahlgrenska Osteoporosis Center, Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
- SciLifeLab, University of Gothenburg, Box 413, 405 30, Gothenburg, Sweden.
| | - Zhicheng Hu
- Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Box- 480, 413 45, Gothenburg, Sweden
- Centre for Clinical Laboratories, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Pradeep Kumar Kopparapu
- Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Box- 480, 413 45, Gothenburg, Sweden
| | - Meghshree Deshmukh
- Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Box- 480, 413 45, Gothenburg, Sweden
| | - Tibor Sághy
- Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Box- 480, 413 45, Gothenburg, Sweden
- Department of Internal Medicine and Clinical Nutrition, Sahlgrenska Osteoporosis Center, Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- SciLifeLab, University of Gothenburg, Box 413, 405 30, Gothenburg, Sweden
| | - Majd Mohammad
- Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Box- 480, 413 45, Gothenburg, Sweden
| | - Tao Jin
- Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Box- 480, 413 45, Gothenburg, Sweden
- Department of Rheumatology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Cecilia Engdahl
- Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Box- 480, 413 45, Gothenburg, Sweden
- Department of Internal Medicine and Clinical Nutrition, Sahlgrenska Osteoporosis Center, Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- SciLifeLab, University of Gothenburg, Box 413, 405 30, Gothenburg, Sweden
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