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Sevilla-Movilla S, Fuentes P, Rodríguez-García Y, Arellano-Sánchez N, Krenn PW, de Val SI, Montero-Herradón S, García-Ceca J, Burdiel-Herencia V, Gardeta SR, Aguilera-Montilla N, Barrio-Alonso C, Crainiciuc G, Bouvard D, García-Pardo A, Zapata AG, Hidalgo A, Fässler R, Carrasco YR, Toribio ML, Teixidó J. ICAP-1 loss impairs CD8 + thymocyte development and leads to reduced marginal zone B cells in mice. Eur J Immunol 2022; 52:1228-1242. [PMID: 35491946 PMCID: PMC9543158 DOI: 10.1002/eji.202149560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 03/15/2022] [Accepted: 04/29/2022] [Indexed: 11/12/2022]
Abstract
ICAP‐1 regulates β1‐integrin activation and cell adhesion. Here, we used ICAP‐1‐null mice to study ICAP‐1 potential involvement during immune cell development and function. Integrin α4β1‐dependent adhesion was comparable between ICAP‐1‐null and control thymocytes, but lack of ICAP‐1 caused a defective single‐positive (SP) CD8+ cell generation, thus, unveiling an ICAP‐1 involvement in SP thymocyte development. ICAP‐1 bears a nuclear localization signal and we found it displayed a strong nuclear distribution in thymocytes. Interestingly, there was a direct correlation between the lack of ICAP‐1 and reduced levels in SP CD8+ thymocytes of Runx3, a transcription factor required for CD8+ thymocyte generation. In the spleen, ICAP‐1 was found evenly distributed between cytoplasm and nuclear fractions, and ICAP‐1–/– spleen T and B cells displayed upregulation of α4β1‐mediated adhesion, indicating that ICAP‐1 negatively controls their attachment. Furthermore, CD3+‐ and CD19+‐selected spleen cells from ICAP‐1‐null mice showed reduced proliferation in response to T‐ and B‐cell stimuli, respectively. Finally, loss of ICAP‐1 caused a remarkable decrease in marginal zone B‐ cell frequencies and a moderate increase in follicular B cells. Together, these data unravel an ICAP‐1 involvement in the generation of SP CD8+ thymocytes and in the control of marginal zone B‐cell numbers.
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Affiliation(s)
- Silvia Sevilla-Movilla
- Department of Molecular Biomedicine, Centro de Investigaciones Biológicas Margarita Salas (CSIC), Madrid, Spain
| | - Patricia Fuentes
- Development and Function of the Immune System Unit, Centro de Biología Molecular Severo Ochoa, CSIC, Universidad Autónoma de Madrid, Madrid, Spain
| | - Yaiza Rodríguez-García
- Department of Molecular Biomedicine, Centro de Investigaciones Biológicas Margarita Salas (CSIC), Madrid, Spain
| | - Nohemi Arellano-Sánchez
- Department of Molecular Biomedicine, Centro de Investigaciones Biológicas Margarita Salas (CSIC), Madrid, Spain
| | - Peter W Krenn
- Department of Molecular Medicine, Max Planck Institute of Biochemistry, Martinsried, Germany.,Present address: Paris-Lodron Universität Salzburg, Austria
| | - Soledad Isern de Val
- Department of Molecular Biomedicine, Centro de Investigaciones Biológicas Margarita Salas (CSIC), Madrid, Spain
| | - Sara Montero-Herradón
- Department of Cell Biology; Faculty of Biology, Complutense University of Madrid, Madrid, 28040.,Spain and Health Research Institute, Hospital 12 de Octubre (imas12), Madrid, 28041, Spain
| | - Javier García-Ceca
- Department of Cell Biology; Faculty of Biology, Complutense University of Madrid, Madrid, 28040.,Spain and Health Research Institute, Hospital 12 de Octubre (imas12), Madrid, 28041, Spain
| | - Valeria Burdiel-Herencia
- Department of Molecular Biomedicine, Centro de Investigaciones Biológicas Margarita Salas (CSIC), Madrid, Spain
| | - Sofía R Gardeta
- Department on Immunology and Oncology, Centro Nacional de Biotecnología (CNB)-CSIC, Madrid, 28049, Spain
| | - Noemí Aguilera-Montilla
- Department of Molecular Biomedicine, Centro de Investigaciones Biológicas Margarita Salas (CSIC), Madrid, Spain
| | - Celia Barrio-Alonso
- Department of Molecular Biomedicine, Centro de Investigaciones Biológicas Margarita Salas (CSIC), Madrid, Spain.,Present address: Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - Georgiana Crainiciuc
- Area of Developmental and Cell Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, 28029, Spain.,Institute for Cardiovascular Prevention, Ludwig-Maximilians University, Munich, 80336, Germany
| | - Daniel Bouvard
- Centre de Recherche en Biologie Cellulaire de Montpellier, Montpellier, France
| | - Angeles García-Pardo
- Department of Molecular Biomedicine, Centro de Investigaciones Biológicas Margarita Salas (CSIC), Madrid, Spain
| | - Agustin G Zapata
- Department of Cell Biology; Faculty of Biology, Complutense University of Madrid, Madrid, 28040.,Spain and Health Research Institute, Hospital 12 de Octubre (imas12), Madrid, 28041, Spain
| | - Andrés Hidalgo
- Area of Developmental and Cell Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, 28029, Spain.,Institute for Cardiovascular Prevention, Ludwig-Maximilians University, Munich, 80336, Germany
| | - Reinhard Fässler
- Department of Molecular Medicine, Max Planck Institute of Biochemistry, Martinsried, Germany
| | - Yolanda R Carrasco
- Department on Immunology and Oncology, Centro Nacional de Biotecnología (CNB)-CSIC, Madrid, 28049, Spain
| | - Maria L Toribio
- Development and Function of the Immune System Unit, Centro de Biología Molecular Severo Ochoa, CSIC, Universidad Autónoma de Madrid, Madrid, Spain
| | - Joaquin Teixidó
- Department of Molecular Biomedicine, Centro de Investigaciones Biológicas Margarita Salas (CSIC), Madrid, Spain
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