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Immunology and Infectiology Laboratory (L2i)

​​​​​​​ Laboratoire Immunologie et Infectiologie (L2i)

Head: Dr Nathalie Bosquet​

Published on 4 November 2025

The technological laboratory "Immunology and Infectiology" (L2i) of IDMIT Department focuses its activities on the analysis of the immune response to infection and vaccination, especially on:

  • ​ ​the dynamics of pathogen dissemination in the host
  •  the immune response to human pathogens and vaccines
  • ​ ​the cross-talk of these parameters at the molecular and cellular level to contribute to the development of new vaccine and therapies for human infections and immune disorders.​


 

​​​L2I activities © CEA/ IDMIT​




We offer technological core facilities dedicated to:



​Quantification of human pathogens up to BSL-3 level by quantitative real-time PCR (qPCR) and classical bacteriology



​Multiplex analysis of biomarkers like cytokines using Bio-Plex 200 technology (up to 38 parameters in routine assays)



​Multiplex analysis of antibody responses using electrochemiluminescent assays (MesoScale Discovery SQ120 MM), classical ELISA and functional assays : neutralization, antibody-dependent cell-mediated cytotoxicity (ADCC), antibody-dependent cellular phagocytosis (ADCP) and complement-dependent cytotoxicity (CDC)



ELISPOT and FluoroSPOT T-cell and B-cell assays



Integrated data analysis​

Pre-clinical development of a vaccine candidate against HIV
A. T-cell response immune response to the vaccine candidate analyzed by IFN-γ ELISPOT
B. virus distribution in tissues analyzed by qPCR
C. comparison of viral load in tissues of vaccinated versus control animals (* p<0.05, ** p<0.001, Mann-Whitney test)

​​SFC : spot-forming cells, PBMC : peripheral blood mononuclear cells, p.i. : post immunization ; AUC : area under the curve ; SHIV : chimeric HIV/Simian Immunodeficiency Virus.