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Roy R, Lorca C, Mulet M, Sánchez Milán JA, Baratas A, de la Casa M, Espinet C, Serra A, Gallart-Palau X. Altered ureido protein modification profiles in seminal plasma extracellular vesicles of non-normozoospermic men. Front Endocrinol (Lausanne) 2023; 14:1113824. [PMID: 37033249 PMCID: PMC10073716 DOI: 10.3389/fendo.2023.1113824] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 03/06/2023] [Indexed: 04/11/2023] Open
Abstract
INTRODUCTION Extracellular vesicles (EVs) have been recognized as key players in numerous physiological functions. These vesicles alter their compositions attuned to the health and disease states of the organism. In men, significant changes in the proteomic composition(s) of seminal plasma EVs (sEVs) have already been found to be related to infertility. METHODS Methods: In this study, we analyze the posttranslational configuration of sEV proteomes from normozoospermic (NZ) men and non-normozoospermic (non-NZ) men diagnosed with teratozoospermia and/or asthenozoospermia by unbiased, discovery-driven proteomics and advanced bioinformatics, specifically focusing on citrulline (Cit) and homocitrulline (hCit) posttranscriptional residues, both considered product of ureido protein modifications. RESULTS AND DISCUSSION Significant increase in the proteome-wide cumulative presence of hCit together with downregulation of Cit in specific proteins related to decisive molecular functions have been encountered in sEVs of non-NZ subjects. These findings identify novel culprits with a higher chance of affecting fundamental aspects of sperm functional quality and define potential specific diagnostic and prognostic non-invasive markers for male infertility.
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Affiliation(s)
- Rosa Roy
- Department of Biology, Genetics Unit, Universidad Autónoma de Madrid, Cantoblanco, Madrid, Spain
| | - Cristina Lorca
- Biomedical Research Institute of Lleida (IRBLLEIDA), +Pec Proteomics Research Group (+PPRG), Neuroscience Area, University Hospital Arnau de Vilanova (HUAV), Lleida, Spain
- IMDEA-Food Research Institute, Campus of International Excellence UAM+CSIC, Old Cantoblanco Hospital, Madrid, Spain
| | - María Mulet
- Biomedical Research Institute of Lleida (IRBLLEIDA), +Pec Proteomics Research Group (+PPRG), Neuroscience Area, University Hospital Arnau de Vilanova (HUAV), Lleida, Spain
- IMDEA-Food Research Institute, Campus of International Excellence UAM+CSIC, Old Cantoblanco Hospital, Madrid, Spain
| | - José Antonio Sánchez Milán
- Biomedical Research Institute of Lleida (IRBLLEIDA), +Pec Proteomics Research Group (+PPRG), Neuroscience Area, University Hospital Arnau de Vilanova (HUAV), Lleida, Spain
| | - Alejandro Baratas
- Department of Biology, Genetics Unit, Universidad Autónoma de Madrid, Cantoblanco, Madrid, Spain
| | - Moisés de la Casa
- Department of Biology, Genetics Unit, Universidad Autónoma de Madrid, Cantoblanco, Madrid, Spain
- GINEFIV, Assisted Reproduction Centre, Madrid, Spain
| | - Carme Espinet
- Department of Medical Basic Sciences, University of Lleida (UdL), Lleida, Spain
| | - Aida Serra
- Biomedical Research Institute of Lleida (IRBLLEIDA), +Pec Proteomics Research Group (+PPRG), Neuroscience Area, University Hospital Arnau de Vilanova (HUAV), Lleida, Spain
- IMDEA-Food Research Institute, Campus of International Excellence UAM+CSIC, Old Cantoblanco Hospital, Madrid, Spain
- Department of Medical Basic Sciences, University of Lleida (UdL), Lleida, Spain
- *Correspondence: Aida Serra, ; Xavier Gallart-Palau,
| | - Xavier Gallart-Palau
- Biomedical Research Institute of Lleida (IRBLLEIDA), +Pec Proteomics Research Group (+PPRG), Neuroscience Area, University Hospital Arnau de Vilanova (HUAV), Lleida, Spain
- Department of Psychology, University of Lleida (UdL), Lleida, Spain
- *Correspondence: Aida Serra, ; Xavier Gallart-Palau,
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León-Letelier RA, Katayama H, Hanash S. Mining the Immunopeptidome for Antigenic Peptides in Cancer. Cancers (Basel) 2022; 14:cancers14204968. [PMID: 36291752 PMCID: PMC9599891 DOI: 10.3390/cancers14204968] [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: 10/05/2022] [Accepted: 10/08/2022] [Indexed: 11/16/2022] Open
Abstract
Simple Summary The immunopeptidome of cancer cells is a treasure trove of neoantigens bound to MHC molecules, thus a great source for mining immunopeptides for immunotherapy applications, including cancer vaccines. Immunopeptides may encompass post-translational modifications that are overlooked by genomic and transcriptomic tools. We review post-translational modifications that have been uncovered, and how this information could be harnessed for cancer vaccines. Abstract Although harnessing the immune system for cancer therapy has shown success, response to immunotherapy has been limited. The immunopeptidome of cancer cells presents an opportunity to discover novel antigens for immunotherapy applications. These neoantigens bind to MHC class I and class II molecules. Remarkably, the immunopeptidome encompasses protein post-translation modifications (PTMs) that may not be evident from genome or transcriptome profiling. A case in point is citrullination, which has been demonstrated to induce a strong immune response. In this review, we cover how the immunopeptidome, with a special focus on PTMs, can be utilized to identify cancer-specific antigens for immunotherapeutic applications.
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Brain ureido degenerative protein modifications are associated with neuroinflammation and proteinopathy in Alzheimer's disease with cerebrovascular disease. J Neuroinflammation 2017; 14:175. [PMID: 28865468 PMCID: PMC5581431 DOI: 10.1186/s12974-017-0946-y] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 08/23/2017] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Brain degenerative protein modifications (DPMs) are associated with the apparition and progression of dementia, and at the same time, Alzheimer's disease with cerebrovascular disease (AD + CVD) is the most prevalent form of dementia in the elder population. Thus, understanding the role(s) of brain DPMs in this dementia subtype may provide novel insight on the disease pathogenesis and may aid on the development of novel diagnostic and therapeutic tools. Two essential DPMs known to promote inflammation in several human diseases are the ureido DPMs (uDPMs) arginine citrullination and lysine carbamylation, although they have distinct enzymatic and non-enzymatic origins, respectively. Nevertheless, the implication of uDPMs in the neuropathology of dementia remains poorly understood. METHODS In this study, we use the state-of-the-art, ultracentrifugation-electrostatic repulsion hydrophilic interaction chromatography (UC-ERLIC)-coupled mass spectrometry technology to undertake a comparative characterization of uDPMs in the soluble and particulate postmortem brain fractions of subjects diagnosed with AD + CVD and age-matched controls. RESULTS An increase in the formation of uDPMs was observed in all the profiled AD + CVD brains. Citrulline-containing proteins were found more abundant in the soluble fraction of AD + CVD whereas homocitrulline-containing proteins were preferentially abundant in the particulate fraction of AD + CVD brains. Several dementia-specific citrulline residues were also identified in soluble proteins previously categorized as pro-immunogenic, which include the receptor P2X7, alpha-internexin, GFAP, CNP, MBP, and histones. Similarly, diverse dementia-specific homocitrulline residues were also observed in the particulate fractions of AD + CVD in proteins that have been vastly implicated in neuropathology. Intriguingly, we also found that the amino acids immediately flanking arginine residues may specifically influence the increase in protein citrullination. CONCLUSIONS Taken together, these results indicate that uDPMs widely contribute to the pathophysiology of AD + CVD by promoting neuroinflammation and proteinopathy. Furthermore, the obtained results could help to identify disease-associated proteins that can act as potential targets for therapeutic intervention or as novel biomarkers of specific neuropathology.
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Turunen S, Huhtakangas J, Nousiainen T, Valkealahti M, Melkko J, Risteli J, Lehenkari P. Rheumatoid arthritis antigens homocitrulline and citrulline are generated by local myeloperoxidase and peptidyl arginine deiminases 2, 3 and 4 in rheumatoid nodule and synovial tissue. Arthritis Res Ther 2016; 18:239. [PMID: 27765067 PMCID: PMC5072303 DOI: 10.1186/s13075-016-1140-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Accepted: 09/27/2016] [Indexed: 02/04/2023] Open
Abstract
Background Seropositive rheumatoid arthritis (RA) is characterized by autoantibodies binding to citrullinated and homocitrullinated proteins. We wanted to study the expression patterns of these disease-associated protein forms and if the rheumatoid nodule and synovial tissue itself contain biologically active levels of citrullinating peptidyl arginine deiminases 2, 3 and 4 and homocitrullination-facilitating neutrophil enzyme myeloperoxidase. Method Total of 195 synovial samples from metatarsal joints from five ACPA/RF-positive RA patients (n = 77), synovial samples from knees of eight seropositive RA (n = 60), seven seronegative RA (n = 33) and five osteoarthritis (n = 25) patients were analyzed for citrulline and homocitrulline contents using HPLC. The location of citrulline- and homocitrulline-containing proteins, PAD 2, 3, 4 and myeloperoxidase were shown by immunostaining. Myeloperoxidase and citrulline- or homocitrulline-containing proteins were stained on Western blot. Results Overall, necrosis was frequent in metatarsals of seropositive RA and absent in seronegative RA and osteoarthritis patients. In histological analysis, there was a significant local patterning and variation in the citrulline and homocitrulline content and it was highest in metatarsal synovial tissues of seropositive RA patients. We found peptidyl arginine deiminase 2, 3 and 4 in the lining and sublining layers of intact synovial tissue. Myeloperoxidase was found locally around necrotic areas. The tissues with necrosis contained the highest levels of citrulline and homocitrulline. Conclusions Rheumatoid nodules and synovia contain significant amount of PAD2, 3 and 4 and myeloperoxidase enzymes. These enzymes could explain the levels of citrulline and homocitrulline in seropositive RA synovial and rheumatoid nodule tissues especially around necrotic tissue.
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Affiliation(s)
- Sanna Turunen
- Department of Anatomy and Cell Biology, Cancer and Translational Medicine Research Unit, University of Oulu, P.O. Box 5000, 90014, Oulu, Finland.
| | - Johanna Huhtakangas
- Department of Anatomy and Cell Biology, Cancer and Translational Medicine Research Unit, University of Oulu, P.O. Box 5000, 90014, Oulu, Finland.,Division of Rheumatology, Department of Internal Medicine, Oulu University Hospital, Oulu, Finland
| | - Tomi Nousiainen
- Division of Orthopedic Surgery, Oulu University Hospital, Oulu, Finland
| | | | - Jukka Melkko
- Department of Pathology, Cancer and Translational Medicine Research Unit, University of Oulu and Oulu University Hospital, Oulu, Finland
| | - Juha Risteli
- Department of Clinical Chemistry, Cancer and Translational Medicine Research Unit, University of Oulu, Oulu, Finland.,Northern Finland Laboratory Centre NordLab, Oulu University Hospital, Oulu, Finland
| | - Petri Lehenkari
- Department of Anatomy and Cell Biology, Cancer and Translational Medicine Research Unit, University of Oulu, P.O. Box 5000, 90014, Oulu, Finland.,Division of Orthopedic Surgery, Oulu University Hospital, Oulu, Finland
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