Immunology research

Research

People

Our research

Our overall aim is to guide the development of vaccination strategies for vulnerable populations. We have a longstanding interest in the immunology of infectious diseases and vaccines in the mother-infant dyad. We are exploring immunity to viral infections in pregnant women and potential correlates of protection that could be targeted by vaccination. Analyzing the impact of pregnancy on vaccine induced immunity, we are investigating the components of maternal immunity transferred to the newborn and their interactions with the infant immune system. Using systems approaches, we attempt to gain a comprehensive view of vaccine-induced immunity in the mother-infant dyad to guide integrated maternal and infant vaccination strategies.

In recent years, we have initiated research projects exploring immunity to viral infections in immunocompromised populations, including elderly and transplanted patients. Using systems approaches, we are exploring correlates of protection against viral replication and disease to guide the development of vaccines. In parallel, we are attempting to understand the limitations of vaccine responses in these populations and the pathways that could be targeted by improved vaccination strategies.

Our overall aim is to guide the development of vaccination strategies for vulnerable populations. We are exploring immunity to viral infections in pregnant women and correlates of protection that could be targeted by vaccination. Analyzing the impact of pregnancy on vaccine induced immunity, we are investigating the transfer of maternal immunity to the newborn and its interaction with the infant immune system. Using systems approaches, we attempt to gain a comprehensive view of vaccine-induced immunity in the mother-infant dyad to guide integrated maternal and infant vaccination strategies. In recent years, we have initiated research projects exploring immunity to viral infections in immunocompromised populations (elderly and transplanted patients). Using systems approaches, we are exploring correlates of protection against viral replication and disease to guide the development of vaccines. In parallel, we are attempting to understand the limitations of vaccine responses in these populations and the pathways that could be targeted by improved vaccination strategies.

Our team

Arnaud Marchant, MD PhD, is an immunologist by training. He has more than 20 year’s experience in immunology of infectious diseases and vaccines at the Université libre de Bruxelles, the Medical Research Council Laboratories, The Gambia, and the Weatherall Institute for Molecular Medicine, Oxford. He was the director of the Institute for Medical Immunology, ULB, since 2015 and recently founded the European Plotkin Institute for Vaccinology in partnership with the University of Antwerp.

Selected publications

Goetghebuer T, Smolen K, Adler C, Das J, McBride T, Smits G, Lecomte S, Haelterman E, Barlow P, Piedra PA, van der Klis F, Kollmann T, Lauffenburger D, Alter G, Levy J, Marchant A. Initiation of anti-retroviral therapy before pregnancy reduces the risk of infection related hospitalization in HIV-exposed uninfected infants in an industrialized country. Clin Infect Dis. 2019 Mar 19;68(7):1193-1203. doi: 10.1093/cid/ciy673


Kollmann TR, Marchant A, Way SS. Vaccination Strategies to Enhance Immunity in Newborn Infants. Science. 2020 May 8;368(6491):612-615. doi: 10.1126/science.aaz9447


Pannus P, Neven KY, De Craeye S, Heyndrickx L, Vande Kerckhove S, Georges D, Michiels J, Francotte A, Van Den Bulcke M, Zrein M, Van Gucht S, Schmickler MN, Verbrugghe M, Matagne A, Thomas I, Dierick K, Weiner JA, Ackerman ME, Goriely S, Goossens ME, Ariën KK, Desombere I, Marchant A. Poor antibody response to BioNTech/Pfizer COVID-19 vaccination in SARS-CoV-2 naïve residents of nursing homes. Clin Infect Dis. 2022 Aug 24;75(1):e695-e704. doi: 10.1093/cid/ciab998


Sadarangani M, Marchant A, Kollmann TR. Immunological mechanisms of vaccine-induced protection against COVID-19 in humans. Nat Rev Immunol. 2021 Aug;21(8):475-484. doi: 10.1038/s41577-021-00578-z


Kemlin D, Gemander N, Depickère S, Olislagers V, Georges D, Waegemans A, Pannus P, Lemy A, Goossens ME, Desombere I, Michiels J, Vandevenne M, Heyndrickx L, Ariën KK, Matagne A, Ackerman ME, Le Moine A, Marchant A. Humoral and cellular immune correlates of protection against COVID-19 in kidney transplant recipients. Am J Transplant. 2023 May;23(5):649-658. doi: 10.1016/j.ajt.2023.02.015

Goetghebuer T, et al. Clin Infect Dis. 2019 Mar 19;68(7):1193-1203. doi: 10.1093/cid/ciy673
Kollmann TR, et al. Science. 2020 May 8;368(6491):612-615. doi: 10.1126/science.aaz9447
Pannus HR, et al. Clin Infect Dis. 2022 Aug 24;75(1):e695-e704. doi: 10.1093/cid/ciab998
Sadarangani M, et al. Nat Rev Immunol. 2021 Aug;21(8):475-484. doi: 10.1038/s41577-021-00578-z
Kemlin D, et al. Am J Transplant. 2023 May;23(5):649-658. doi: 10.1016/j.ajt.2023.02.015