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Martucci LF, Eichler RA, Silva RN, Costa TJ, Tostes RC, Busatto GF, Seelaender MC, Duarte AJ, Souza HP, Ferro ES. Intracellular peptides in SARS-CoV-2-infected patients. iScience 2023; 26:107542. [PMID: 37636076 PMCID: PMC10448160 DOI: 10.1016/j.isci.2023.107542] [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: 03/10/2023] [Revised: 05/29/2023] [Accepted: 08/01/2023] [Indexed: 08/29/2023] Open
Abstract
Intracellular peptides (InPeps) generated by the orchestrated action of the proteasome and intracellular peptidases have biological and pharmacological significance. Here, human plasma relative concentration of specific InPeps was compared between 175 patients infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), and 45 SARS-CoV-2 non-infected patients; 2,466 unique peptides were identified, of which 67% were InPeps. The results revealed differences of a specific group of peptides in human plasma comparing non-infected individuals to patients infected by SARS-CoV-2, following the results of the semi-quantitative analyses by isotope-labeled electrospray mass spectrometry. The protein-protein interactions networks enriched pathways, drawn by genes encoding the proteins from which the peptides originated, revealed the presence of the coronavirus disease/COVID-19 network solely in the group of patients fatally infected by SARS-CoV-2. Thus, modulation of the relative plasma levels of specific InPeps could be employed as a predictive tool for disease outcome.
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Affiliation(s)
- Luiz Felipe Martucci
- Department of Pharmacology, Biomedical Sciences Institute, São Paulo 05508-000, Brazil
| | | | - Renée N.O. Silva
- Department of Pharmacology, Biomedical Sciences Institute, São Paulo 05508-000, Brazil
| | - Tiago J. Costa
- Department of Pharmacology, Ribeirao Preto Medical School, Ribeirão Preto 14049-900, Brazil
| | - Rita C. Tostes
- Department of Pharmacology, Ribeirao Preto Medical School, Ribeirão Preto 14049-900, Brazil
| | - Geraldo F. Busatto
- Department of Psichiatry, Medical School and Hospital das Clínicas, University of São Paulo, 01246-903 SP, Brazil
| | - Marilia C.L. Seelaender
- Department of Surgery, Medical School and Hospital das Clínicas, University of São Paulo, 01246-903 SP, Brazil
| | - Alberto J.S. Duarte
- Department of Patology, Medical School and Hospital das Clínicas, University of São Paulo, 01246-903 SP, Brazil
| | - Heraldo P. Souza
- Department of Internal Medicine, Medical School and Hospital das Clínicas, University of São Paulo, 01246-903 SP, Brazil
| | - Emer S. Ferro
- Department of Pharmacology, Biomedical Sciences Institute, São Paulo 05508-000, Brazil
- Department of Patology, Medical School and Hospital das Clínicas, University of São Paulo, 01246-903 SP, Brazil
- Department of Internal Medicine, Medical School and Hospital das Clínicas, University of São Paulo, 01246-903 SP, Brazil
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Han Y, Tomita T, Kato M, Ashihara N, Higuchi Y, Matoba H, Wang W, Hayashi H, Itoh Y, Takahashi S, Kurita H, Nakayama J, Okumura N, Hiratsuka S. Citrullinated fibrinogen-SAAs complex causes vascular metastagenesis. Nat Commun 2023; 14:4960. [PMID: 37620307 PMCID: PMC10449786 DOI: 10.1038/s41467-023-40371-1] [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: 10/26/2022] [Accepted: 07/20/2023] [Indexed: 08/26/2023] Open
Abstract
Primary tumor cells metastasize to a distant preferred organ. However, the most decisive host factors that determine the precise locations of metastases in cancer patients remain unknown. We have demonstrated that post-translational citrullination of fibrinogen creates a metastatic niche in the vulnerable spots. Pulmonary endothelial cells mediate the citrullination of fibrinogen, changing its conformation, surface charge, and binding properties with serum amyloid A proteins (SAAs), to make it a host tissue-derived metastatic pathogen. The human-specific SAAs-citrullinated fibrinogen (CitFbg) complex recruits cancer cells to form a protein-metastatic cell aggregation in humanized SAA cluster mice. Furthermore, a CitFbg peptide works as a competitive inhibitor to block the homing of metastatic cells into the SAAs-CitFbg sites. The potential metastatic sites in the lungs of patients are clearly visualized by our specific antibody for CitFbg. Thus, CitFbg deposition displays metastatic risks for cancer patients, and the citrullinated peptide is a new type of metastasis inhibitor.
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Affiliation(s)
- Yibing Han
- Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University School of Medicine, Matsumoto, Japan
- Department of Biochemistry and Molecular Biology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Takeshi Tomita
- Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University School of Medicine, Matsumoto, Japan
- Department of Biochemistry and Molecular Biology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Masayoshi Kato
- Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University School of Medicine, Matsumoto, Japan
- Department of Biochemistry and Molecular Biology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Norihiro Ashihara
- Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University School of Medicine, Matsumoto, Japan
- Department of Biochemistry and Molecular Biology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Yumiko Higuchi
- Department of Health and Medical Sciences, Graduate School of Medicine, Shinshu University, Matsumoto, Japan
- Department of Biomedical Laboratory Sciences, Shinshu University School of Medicine, Matsumoto, Japan
| | - Hisanori Matoba
- Department of Molecular Pathology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Weiyi Wang
- Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University School of Medicine, Matsumoto, Japan
- Department of Biochemistry and Molecular Biology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Hikaru Hayashi
- Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University School of Medicine, Matsumoto, Japan
- Department of Biochemistry and Molecular Biology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Yuji Itoh
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Japan
| | - Satoshi Takahashi
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Japan
| | - Hiroshi Kurita
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine, Matsumoto, Japan
| | - Jun Nakayama
- Department of Molecular Pathology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Nobuo Okumura
- Department of Health and Medical Sciences, Graduate School of Medicine, Shinshu University, Matsumoto, Japan
- Department of Biomedical Laboratory Sciences, Shinshu University School of Medicine, Matsumoto, Japan
| | - Sachie Hiratsuka
- Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University School of Medicine, Matsumoto, Japan.
- Department of Biochemistry and Molecular Biology, Shinshu University School of Medicine, Matsumoto, Japan.
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Slight-Webb S, Bourn RL, Holers VM, James JA. Shared and unique immune alterations in pre-clinical autoimmunity. Curr Opin Immunol 2019; 61:60-68. [PMID: 31557691 DOI: 10.1016/j.coi.2019.08.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 08/01/2019] [Accepted: 08/26/2019] [Indexed: 02/08/2023]
Abstract
Progression from health to a classified autoimmune disease is an evolving process that can happen rapidly in some diseases, but usually takes years to develop. Specific immune alterations predate pathogenic autoimmunity and can be used as disease biomarkers to identify high-risk individuals for prevention studies applied in the pre-clinical state. Here we discuss recent findings that illuminate specific immune pathways that are altered in the earliest phases of pre-clinical autoimmunity as well as those mediators more closely associated with later clinically apparent and classified disease onset.
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Affiliation(s)
- Samantha Slight-Webb
- Arthritis and Clinical Immunology, Oklahoma Medical Research Foundation, Oklahoma City, OK, United States
| | - Rebecka L Bourn
- Arthritis and Clinical Immunology, Oklahoma Medical Research Foundation, Oklahoma City, OK, United States
| | - V Michael Holers
- Medicine and Rheumatology, University of Colorado School of Medicine, Aurora, CO 80045, United States
| | - Judith A James
- Arthritis and Clinical Immunology, Oklahoma Medical Research Foundation, Oklahoma City, OK, United States; Medicine and Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, United States.
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