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Stromal cells are connective tissue cells found in all our organs. In lymphoid organs such as lymph nodes, they provide a migratory and feeding platform for leukocytes. In non-lymphoid organs, they are best known for supporting the function of parenchymal cells. However, considerable evidence suggests that stromal cells also control the homeostasis of tissue-resident immune cells, such as macrophages.

Our laboratory studies the immunoregulatory functions of stromal cells in lymphoid organs and the dialogue between stromal cells and macrophages in non-lymphoid organs.

Projects

Project
2025
Circulating precursors and niche requirements for LysoDC differentiation (LysoDiff)

Our health depends on a delicate balance between immune defense against pathogens and tolerance to […]

Hugues LELOUARD
Marc BAJENOFF
Project
2025
Accelerating our ability to understand and combat immunopathology caused by respiratory infections due to emerging viruses: from mouse models to patients to macaques

Project: UNFIRE Other participants: Ciphe (Ana Zarubica), Hospices Civils de Lyon and CIRI (Sophie Trouillet-Assant, Thierry Walzer), CoVir team […]

Marc DALOD
Marc BAJENOFF
Rejane RUA
Mauro GAYA
Philippe PIERRE
Project
2025
Intracellular Carriers Against Resistant microOrganisms (ICARO)

Project: ICARO Current acellular vaccines are mostly effective against extracellular pathogens, but fail to induce a response […]

Hugues LELOUARD
Cyrille MIONNET
Project
2025
Myfunbat

Project: Myfunbat The project aims to define the diversity and functions of brown adipose tissue (BAT) macrophages, […]

Marc BAJENOFF
Project
2025
Endopos

Project: EndoPos The EndoPos project explores the role of the GDPD2 enzyme, produced in particular by pulp fibroblasts […]

Marc BAJENOFF
Project
2025
Path Finder

Project: Path Finder This project aims to characterize the spatio-temporal development of type I dendritic cells (cDC1) in […]

Marc BAJENOFF
Project
2025
T-Mac 

Project: T-MAC The T-MAC project aims to understand how testicular macrophages and their niches contribute to the maintenance of […]

Marc BAJENOFF
Project
2025
NICHE

Project: NICHE The NICHE project explores the concept that macrophages (Macs) depend on local niches formed by […]

Marc BAJENOFF
Project
2025
HOMEOSTASIS

Project: HOMEOSTASIS HOMEOSTASIS explores how host–commensal interactions preserve tissue equilibrium. Using a model of long-term, inflammation-free oral colonization by […]

Johnny BONNARDEL
Project
2025
CARCINOMAC

Project: CARCINOMAC Head and neck cancers are the sixth most common type of cancer. Among these, the Oral Squamous […]

Johnny BONNARDEL
Project
2025
TEAR-HoM

The ocular surface is protected by a multi-layered tear film, with the lipid layer produced by Meibomian glands (MGs) playing […]

Johnny BONNARDEL

Publications

2024
Tauber M, Basso L, Martin J, Bostan L, Pinto MM, Thierry GR, Houmadi R, Serhan N, Loste A, Blériot ..., Correction: Landscape of mast cell populations across organs in mice and humans. J Exp Med 2024 Feb; 221(2): .
2024
Sekias M, Baratin M, Bajenoff M, Isolation and Characterization of Testis Macrophages Using Flow Cytometry. Methods Mol Biol 2024; 2713(): 199-206.
2023
McKendrick JG, Jones GR, Elder SS, Watson E, T'Jonck W, Mercer E, Magalhaes MS, Rocchi C, Hegarty LM..., CSF1R-dependent macrophages in the salivary gland are essential for epithelial regeneration after radiation-induced injury. Sci Immunol 2023 Nov; 8(89): eadd4374.
2023
Garcia-Seyda N, Song S, Seveau de Noray V, David-Broglio L, Matti C, Artinger M, Dupuy F, Biarnes-Pe..., Naive T lymphocytes chemotax long distance to CCL21 but not to a source of bioactive S1P., iScience 2023 Oct; 26(10): 107695.
2023
Tauber M, Basso L, Martin J, Bostan L, Pinto MM, Thierry GR, Houmadi R, Serhan N, Loste A, Blériot ..., Landscape of mast cell populations across organs in mice and humans. J Exp Med 2023 Oct; 220(10): .
2023
Ugur M, Labios RJ, Fenton C, Knöpper K, Jobin K, Imdahl F, Golda G, Hoh K, Grafen A, Kaisho T, Sali..., Lymph node medulla regulates the spatiotemporal unfolding of resident dendritic cell networks. Immunity 2023 Aug; 56(8): 1778-1793.e10.
2023
Kaltenbach L, Martzloff P, Bambach SK, Aizarani N, Mihlan M, Gavrilov A, Glaser KM, Stecher M, Thün..., Slow integrin-dependent migration organizes networks of tissue-resident mast cells. Nat Immunol 2023 Jun; 24(6): 915-924.
2023
Chia SL, Kapoor S, Carvalho C, Bajénoff M, Gentek R, Mast cell ontogeny: From fetal development to life-long health and disease. Immunol Rev 2023 May; 315(1): 31-53.
2023
Baudon EM, Bajenoff M, Tingible body macrophages: Gargantuan chameleons of the germinal center. J Exp Med 2023 Apr; 220(4): .
2023
Baudon EM, Bajenoff M, [Tingible body macrophages: Hungry predators serving immunity]. Med Sci (Paris) 2023; 39(8-9): 615-617.
2021
Menzel L, Zschummel M, Crowley T, Franke V, Grau M, Ulbricht C, Hauser A, Siffrin V, Bajénoff M, Ac..., Lymphocyte access to lymphoma is impaired by high endothelial venue regression. Cell Rep 2021 Oct; 37(4): 109878.
2021
Blériot C, Barreby E, Dunsmore G, Ballaire R, Chakarov S, Ficht X, De Simone G, Andreata F, Fumagal..., A subset of Kupffer cells regulates metabolism through the expression of CD36. Immunity 2021 Sep; 54(9): 2101-2116.e6.
2021
De Simone G, Andreata F, Bleriot C, Fumagalli V, Laura C, Garcia-Manteiga JM, Di Lucia P, Gilotto S,..., Identification of a Kupffer cell subset capable of reverting the T cell dysfunction induced by hepatocellular priming. Immunity 2021 Sep; 54(9): 2089-2100.e8.
2021
Bellomo A, Gentek R, Golub R, Bajénoff M, Macrophage-fibroblast circuits in the spleen. Immunol Rev 2021 Jul; 302(1): 104-125.
2021
Bijnen M, Bajénoff M, Gland Macrophages: Reciprocal Control and Function within Their Niche. Trends Immunol 2021 Feb; 42(2): 120-136.
2021
Garcia-Seyda N, Seveau V, Manca F, Biarnes-Pelicot M, Valignat MP, Bajénoff M, Theodoly O, Human neutrophils swim and phagocytose bacteria. Biol Cell 2021 Jan; 113(1): 28-38.
2020
Lacerda Mariano L, Rousseau M, Varet H, Legendre R, Gentek R, Saenz Coronilla J, Bajenoff M, Gomez P..., Functionally distinct resident macrophage subsets differentially shaped responses to infection in the bladder. Sci Adv 2020 Nov; 6(48): .
2020
Zeis P, Lian M, Fan X, Herman JS, Hernandez DC, Gentek R, Elias S, Symowski C, Knöpper K, Peltokang..., In Situ Maturation and Tissue Adaptation of Type 2 Innate Lymphoid Cell Progenitors. Immunity 2020 Oct; 53(4): 775-792.e9.
2020
Krivanek J, Soldatov RA, Kastriti ME, Chontorotzea T, Herdina AN, Petersen J, Szarowska B, Landova M..., Dental cell type atlas reveals stem and differentiated cell types in mouse and human teeth. Nat Commun 2020 Sep; 11(1): 4816.
2020
Simic M, Manosalva I, Spinelli L, Gentek R, Shayan RR, Siret C, Girard-Madoux M, Wang S, de Fabritus..., Distinct Waves from the Hemogenic Endothelium Give Rise to Layered Lymphoid Tissue Inducer Cell Ontogeny, Cell Rep 2020 Aug; 32(6): 108004.
2020
Alicia Bellomo, Isabelle Mondor, Lionel Spinelli, Marine Lagueyrie, Benjamin J Stewart, Nicolas Brou..., Reticular Fibroblasts Expressing the Transcription Factor WT1 Define a Stromal Niche that Maintains and Replenishes Splenic Red Pulp Macrophages, <i>Immunity</i>, 2020, 53 (1), pp.127 - 142.e7. <a target="_blank" href="https://dx.doi.org/10.1016/j.immuni.2020.06.008">⟨10.1016/j.immuni.2020.06.008⟩</a>.
2020
Garcia-Seyda N, Aoun L, Tishkova V, Seveau V, Biarnes-Pelicot M, Bajénoff M, Valignat MP, Theodoly ..., Microfluidic device to study flow-free chemotaxis of swimming cells. Lab Chip 2020 May; 20(9): 1639-1647.
2020
Etzerodt A, Moulin M, Doktor TK, Delfini M, Mossadegh-Keller N, Bajenoff M, Sieweke MH, Moestrup SK,..., Tissue-resident macrophages in omentum promote metastatic spread of ovarian cancer. J Exp Med 2020 Apr; 217(4): .
2020
Guilliams M, Thierry GR, Bonnardel J, Bajenoff M, Establishment and Maintenance of the Macrophage Niche. Immunity 2020 Mar; 52(3): 434-451.
2019
Stewart BJ, Ferdinand JR, Young MD, Mitchell TJ, Loudon KW, Riding AM, Richoz N, Frazer GL, Stanifor..., Spatiotemporal immune zonation of the human kidney. Science 2019 Sep; 365(6460): 1461-1466.
2019
BONNARDEL J, T'Jonck W, Gaublomme D, Browaeys R, Scott CL, Martens L, Vanneste B, De Prijck S, Nedo..., Stellate Cells, Hepatocytes, and Endothelial Cells Imprint the Kupffer Cell Identity on Monocytes Colonizing the Liver Macrophage Niche, Immunity.
2019
Mondor I, Baratin M, Lagueyrie M, Saro L, Henri S, Gentek R, Suerinck D, Kastenmuller W, Jiang JX, B..., Lymphatic Endothelial Cells Are Essential Components of the Subcapsular Sinus Macrophage Niche. Immunity 2019 Jun; 50(6): 1453-1466.e4.
2019
Thierry GR, Gentek R, Bajenoff M, Remodeling of reactive lymph nodes: Dynamics of stromal cells and underlying chemokine signaling. Immunol Rev 2019 May; 289(1): 42-61.
2019
Balzano M, De Grandis M, Vu Manh TP, Chasson L, Bardin F, Farina A, Sergé A, Bidaut G, Charbord P, ..., Nidogen-1 Contributes to the Interaction Network Involved in Pro-B Cell Retention in the Peri-sinusoidal Hematopoietic Stem Cell Niche. Cell Rep 2019 Mar; 26(12): 3257-3271.e8.
2019
Chakarov S, Lim HY, Tan L, Lim SY, See P, Lum J, Zhang XM, Foo S, Nakamizo S, Duan K, Kong WT, Gente..., Two distinct interstitial macrophage populations coexist across tissues in specific subtissular niches. Science 2019 Mar; 363(6432): .
2019
Cabeza-Cabrerizo M, van Blijswijk J, Wienert S, Heim D, Jenkins RP, Chakravarty P, Rogers N, Frederi..., Tissue clonality of dendritic cell subsets and emergency DCpoiesis revealed by multicolor fate mapping of DC progenitors. Sci Immunol 2019 Mar; 4(33): .
2018
Gentek R, Ghigo C, Hoeffel G, Jorquera A, Msallam R, Wienert S, Klauschen F, Ginhoux F, Bajénoff M, Correction: Epidermal γδ T cells originate from yolk sac hematopoiesis and clonally self-renew in the adult. J Exp Med 2018 Dec; 215(12): 3213.
2018
Thierry GR, Kuka M, De Giovanni M, Mondor I, Brouilly N, Iannacone M, Bajénoff M, The conduit system exports locally secreted IgM from lymph nodes. J Exp Med 2018 Dec; 215(12): 2972-2983.
2018
Gentek R, Ghigo C, Hoeffel G, Jorquera A, Msallam R, Wienert S, Klauschen F, Ginhoux F, Bajénoff M, Epidermal γδ T cells originate from yolk sac hematopoiesis and clonally self-renewed in the adult. J Exp Med 2018 Dec; 215(12): 2994-3005.
2018
Pezoldt J, Pasztoi M, Zou M, Wiechers C, Beckstette M, Thierry GR, Vafadarnejad E, Floess S, Arampat..., Neonatally imprinted stromal cell subsets induce tolerogenic dendritic cells in mesenteric lymph nodes. Nat Commun 2018 Sep;9(1):3903.
2018
Bellomo A, Gentek R, Bajénoff M, Baratin M, Lymph node macrophages: Scavengers, immune sentinels and trophic effectors. Cell Immunol 2018 Aug; 330(): 168-174.
2018
Gentek R, Ghigo C, Hoeffel G, Bulle MJ, Msallam R, Gautier G, Launay P, Chen J, Ginhoux F, Bajénoff..., Hemogenic Endothelial Fate Mapping Reveals Dual Developmental Origin of Mast Cells. Immunity 2018 Jun; 48(6): 1160-1171.e5.
2018
Baranska A, Shawket A, Jouve M, Baratin M, Malosse C, Voluzan O, Vu Manh TP, Fiore F, Bajénoff M, B..., Unveiling skin macrophage dynamics explains both tattoo persistence and strenuous removal. J Exp Med 2018 Apr; 215(4): 1115-1133.
2018
Ghigo C, Gentek R, Bajénoff M, Imaging the Lymph Node Stroma. Methods Mol Biol 2018; 1763(): 53-61.
2017
Habbeddine M, Verthuy C, Rastoin O, Chasson L, Bebien M, Bajenoff M, Adriouch S, den Haan JMM, Penni..., Receptor Activator of NF-κB Orchestrates Activation of Antiviral Memory CD8 T Cells in the Spleen Marginal Zone. Cell Rep 2017 Nov; 21(9): 2515-2527.
2017
Abou-Hamdan M, Gharib B, Bajenoff M, Julia V, de Reggi M, Pantethine Down-Regulates Leukocyte Recruitment and Inflammatory Parameters in a Mouse Model of Allergic Airway Inflammation. Med Sci Monit Basic Res 2017 Nov; 23(): 368-372.
2017
Baratin M, Simon L, Jorquera A, Ghigo C, Dembele D, Nowak J, Gentek R, Wienert S, Klauschen F, Malis..., T Cell Zone Resident Macrophages Silently Dispose of Apoptotic Cells in the Lymph Node. Immunity 2017 Aug; 47(2): 349-362.e5.
2017
Gentek R, Bajénoff M, Lymph Node Stroma Dynamics and Approaches for Their Visualization. Trends Immunol 2017 Apr; 38(4): 236-247.
2016
Mondor I, Jorquera A, Sene C, Adriouch S, Adams RH, Zhou B, Wienert S, Klauschen F, Bajénoff M, Clonal Proliferation and Stochastic Pruning Orchestrate Lymph Node Vasculature Remodeling. Immunity 2016 Oct; 45(4): 877-888.
2016
Ardouin L, Luche H, Chelbi R, Carpentier S, Shawket A, Montanana Sanchis F, Santa Maria C, Grenot P,..., Broad and Largely Concordant Molecular Changes Characterize Tolerogenic and Immunogenic Dendritic Cell Maturation in Thymus and Periphery. Immunity 2016 Aug; 45(2): 305-18.
2015
Terhorst D, Chelbi R, Wohn C, Malosse C, Tamoutounour S, Jorquera A, Bajenoff M, Dalod M, Malissen B..., Dynamics and Transcriptomics of Skin Dendritic Cells and Macrophages in an Imiquimod-Induced, Biphasic Mouse Model of Psoriasis. J Immunol 2015 Nov; 195(10): 4953-61.
2014
Molawi K, Wolf Y, Kandalla PK, Favret J, Hagemeyer N, Frenzel K, Pinto AR, Klapproth K, Henri S, Mal..., Progressive replacement of embryo-derived cardiac macrophages with age. J Exp Med 2014 Oct; 211(11): 2151-8.
2014
Jarjour M, Jorquera A, Mondor I, Wienert S, Narang P, Coles MC, Klauschen F, Bajénoff M, Fate mapping reveals origin and dynamics of lymph node follicular dendritic cells. J Exp Med 2014 Jun;211(6):1109-22.
2013
Mionnet C, Mondor I, Jorquera A, Loosveld M, Maurizio J, Arcangeli ML, Ruddle NH, Nowak J, Aurrand-L..., Identification of a new stromal cell type involved in the regulation of inflamed B cell follicles. PLoS Biol 2013 Oct; 11(10): e1001672.
2013
Ghigo C, Mondor I, Jorquera A, Nowak J, Wienert S, Zahner SP, Clausen BE, Luche H, Malissen B, Klaus..., Multicolor fate mapping of Langerhans cell homeostasis. J Exp Med 2013 Aug; 210(9): 1657-64.
2013
Mancino A, Habbeddine M, Johnson E, Luron L, Bebien M, Memet S, Fong C, Bajenoff M, Wu X, Karin M, C..., I kappa B kinase alpha (IKKα) activity is required for functional maturation of dendritic cells and acquired immunity to infection. EMBO J 2013 Mar; 32(6): 816-28.
2012
Baptiste N Jaeger, Jean Donadieu, Céline Cognet, Claire Bernat, Diana Ordoñez-Rueda, Vincent Barlo..., Neutrophil depletion odd natural killer cell maturation, function, and homeostasis. <i>Journal of Experimental Medicine</i>, 2012, 209 (3), pp.565-80. <a target="_blank" href="https://dx.doi.org/10.1084/jem.20111908">⟨10.1084/jem.20111908⟩</a>.
2012
Bajénoff M, Stromal cells control soluble material and cellular transport in lymph nodes. Front Immunol 2012; 3(): 304.
2011
Mionnet C, Sanos SL, Mondor I, Jorquera A, Laugier JP, Germain RN, Bajénoff M, High endothelialvenules as traffic control points maintaining lymphocyte population homeostasis in lymph nodes. Blood 2011 Dec; 118(23): 6115-22.
2011
Frontera V, Arcangeli ML, Zimmerli C, Bardin F, Obrados E, Audebert S, Bajenoff M, Borg JP, Aurrand-..., Cutting edge: JAM-C controls homeostatic chemokine secretion in lymph node fibroblastic reticular cells expressing thrombomodulin. J Immunol 2011 Jul; 187(2): 603-7.
2011
Sanos SL, Nowak J, Fallet M, Bajenoff M, Stromal cell networks regulate thymocyte migration and dendritic cell behavior in the thymus. J Immunol 2011 Mar; 186(5): 2835-41.
2009
Bajénoff M, Germain RN, B-cell follicle development remodels the conduit system and allows soluble antigen delivery to follicular dendritic cells. Blood 2009 Dec; 114(24): 4989-97.
2009
Klauschen F, Ishii M, Qi H, Bajénoff M, Egen JG, Germain RN, Meier-Schellersheim M, Quantifying cellular interaction dynamics in 3D fluorescence microscopy data. Nat Protoc 2009; 4(9): 1305-11.
2008
Bajénoff M, Glaichenhaus N, Germain RN, Fibroblastic reticular cells guide T lymphocyte entry into and migration within the splenic T cell zone. J Immunol 2008 Sep; 181(6): 3947-54.
2008
Germain RN, Bajénoff M, Castellino F, Chieppa M, Egen JG, Huang AY, Ishii M, Koo LY, Qi H, Making friends in out-of-the-way places: how cells of the immune system get together and how they conduct their business as revealed by intravital imaging. Immunol Rev 2008 Feb; 221(): 163-81.
2007
Bajénoff M, Germain RN, Seeing is believing: a focus on the contribution of microscopic imaging to our understanding of immune system function. Eur J Immunol 2007 Nov; 37 Suppl 1(): S18-33.
2007
Bajénoff M, Egen JG, Qi H, Huang AY, Castellino F, Germain RN, Highways, byways and breadcrumbs: directing lymphocyte traffic in the lymph node. Trends Immunol 2007 Aug; 28(8): 346-52.
2007
Bajénoff M, [Lymphocyte migration in stromal cell networks]. Med Sci (Paris) 2007 Apr; 23(4): 345-7.
2006
Bajénoff M, Egen JG, Koo LY, Laugier JP, Brau F, Glaichenhaus N, Germain RN, Stromal cell networks regulate lymphocyte entry, migration, and territoriality in lymph nodes. Immunity 2006 Dec; 25(6): 989-1001.
2006
Bajénoff M, Breart B, Huang AY, Qi H, Cazareth J, Braud VM, Germain RN, Glaichenhaus N, Natural killer cell behavior in lymph nodes revealed by static and real-time imaging. J Exp Med 2006 Mar; 203(3): 619-31.
2004
Wurtz O, Bajénoff M, Guerder S, IL-4-mediated inhibition of IFN-gamma production by CD4+ T cells proceeds by several developmentally regulated mechanisms. Int Immunol 2004 Mar; 16(3): 501-8.
2003
Bajénoff M, Guerder S, Homing to nonlymphoid tissues is not necessary for effector Th1 cell differentiation. J Immunol 2003 Dec; 171(12): 6355-62.
2003
Bajénoff M, Granjeaud S, Guerder S, The strategy of T cell antigen-presenting cell encounter in antigen-draining lymph nodes revealed by imaging of initial T cell activation. J Exp Med 2003 Sep; 198(5): 715-24.
2002
Bajénoff M, Wurtz O, Guerder S, Repeated antigen exposure is necessary for the differentiation, but not the initial proliferation, of naive CD4(+) T cells. J Immunol 2002 Feb; 168(4): 1723-9.

Funding