Where Ideas Grow


The immune system has evolved several regulatory mechanisms to achieve maximum protection in the absence of pathology. Pathogens have co-evolved strategies to evade the host immune response. The Immune Regulation group is dedicated to the understanding of the mechanisms explored by hosts and pathogens to modulate the immune response and of the events leading to disease when this regulation fails.



On the host side, we study the anti-inflammatory cytokine IL-10. As this molecule has attracted much attention for potential clinical applications, understanding the molecular mechanisms underlying both IL-10 expression and IL-10 action in immune cells is critical for a better and safer manipulation of the immune system. Our recent data revealed a role for IL-10 in hematopoiesis, by promoting myelopoiesis, and in accelerating aging-related features. We have evidence that IL-10 is accelerating cellular senescence and are pursuing these findings further.

On the pathogen side, we investigate how Mycobacterium tuberculosis, a pathogen that kills over 1.5 million people per year, interacts with the host immune system. We are exploring the physiopathology of tuberculosis in a novel, integrative way, by bringing together the host, the pathogen and the environment diversity. We center our efforts in unveiling the molecular bases implicated in the induction of variable inflammatory responses by M. tuberculosis clinical isolates in different hosts and how these strategies of immune regulation can be explored towards the host benefit. We also investigate how perturbations on the host status (as imposed by comorbidities such as diabetes and cancer) impact on the immune interactions with M. tuberculosis.

Our collaborative network included different groups within i3S, clinicians, and research teams at the Pasteur Institute (Paris), the Francis Crick Institute (London), the Swiss Tropical and Public Health Institute (Basel) and the Biomedicine Institute (Valencia).


Chronic IL-10 exposure leads to a disorganized spleen structure.


Selected Publications

Sousa J., Cá B., Maceiras A.R., Simões-Costa L., Fonseca K.L., Fernandes A.I., Ramos A., Carvalho T., Barros L., Magalhães C., Chiner-Oms Á., Machado H., Veiga M.I., Singh A., Pereira R., Amorim A., Vieira J., Vieira C.P., Bhatt A., Rodrigues F., Rodrigues P.N.S., Gagneux S., Castro A.G., Guimarães J.T., Bastos H.N., Osório N.S., Comas I., Saraiva M.,
Mycobacterium tuberculosis associated with severe tuberculosis evades cytosolic surveillance systems and modulates IL-1ß production. Nature Communications11(1):, 2020. [Journal: Article] [CI: 2] [IF: 12,1 (*)]
DOI: 10.1038/s41467-020-15832-6 SCOPUS: 85083842157. Nature Communications. 2020

Fonseca K.L., Maceiras A.R., Matos R., Simoes-Costa L., Sousa J., Cá B., Barros L., Fernandes A.I., Mereiter S., Reis R., Gomes J., Tapia G., Rodríguez-Martínez P., Martín-Céspedes M., Vashakidze S., Gogishvili S., Nikolaishvili K., Appelberg R., Gärtner F., Rodrigues P.N.S., Vilaplana C., Reis C.A., Magalhães A., Saraiva M.,
Deficiency in the glycosyltransferase Gcnt1 increases susceptibility to tuberculosis through a mechanism involving neutrophils. Mucosal Immunology13(5):836-848, 2020. [Journal: Article] [CI: 3] [IF: 6,7 (*)]
DOI: 10.1038/s41385-020-0277-7 SCOPUS: 85082197621. Mucosal Immunology. 2020

Moreira-Teixeira L., Stimpson P.J., Stavropoulos E., Hadebe S., Chakravarty P., Ioannou M., Aramburu I.V., Herbert E., Priestnall S.L., Suarez-Bonnet A., Sousa J., Fonseca K.L., Wang Q., Vashakidze S., Rodríguez-Martínez P., Vilaplana C., Saraiva M., Papayannopoulos V., O’Garra A.,
Type I IFN exacerbates disease in tuberculosis-susceptible mice by inducing neutrophil-mediated lung inflammation and NETosis. Nature Communications11(1):, 2020. [Journal: Article] [IF: 12,1 (*)]
DOI: 10.1038/s41467-020-19412-6 SCOPUS: 85094939183. Nature Communications. 2020

Moreira-Teixeira L., Tabone O., Graham C.M., Singhania A., Stavropoulos E., Redford P.S., Chakravarty P., Priestnall S.L., Suarez-Bonnet A., Herbert E., Mayer-Barber K.D., Sher A., Fonseca K.L., Sousa J., Cá B., Verma R., Haldar P., Saraiva M., O’Garra A.,
Mouse transcriptome reveals potential signatures of protection and pathogenesis in human tuberculosis. Nature Immunology21(4):464-476, 2020. [Journal: Article] [CI: 8] [IF: 20,5 (*)]
DOI: 10.1038/s41590-020-0610-z SCOPUS: 85082258302. Nature Immunology. 2020

Cá B., Fonseca K.L., Sousa J., Maceiras A.R., Machado D., Sanca L., Rabna P., Rodrigues P.N.S., Viveiros M., Saraiva M.,
Experimental Evidence for Limited in vivo Virulence of Mycobacterium africanum. Frontiers in Microbiology10:, 2019. [Journal: Article] [CI: 1] [IF: 4,2]
DOI: 10.3389/fmicb.2019.02102 SCOPUS: 85072951370. Frontiers in Microbiology. 2019

Moreira-Teixeira L., Sousa J., McNab F.W., Torrado E., Cardoso F., Machado H., Castro F., Cardoso V., Gaifem J., Wu X., Appelberg R., Castro A.G., O'Garra A., Saraiva M.,
Type i IFN inhibits alternative macrophage activation during mycobacterium tuberculosis infection and leads to enhanced protection in the absence of IFN-γ signaling. Journal of Immunology197(12):4714-4726, 2016. [Journal: Article] [CI: 50] [IF: 4,9]
DOI: 10.4049/jimmunol.1600584 SCOPUS: 85002328285. Journal of Immunology. 2016

Carmona J., Cruz A., Moreira-Teixeira L., Sousa C., Sousa J., Osorio N.S., Saraiva A.L., Svenson S., Kallenius G., Pedrosa J., Rodrigues F., Castro A.G., Saraiva M.,
Mycobacterium tuberculosis Strains Are Differentially Recognized by TLRs with an Impact on the Immune Response. PLoS ONE8(6):, 2013. [Journal: Article] [CI: 51] [IF: 3,5]
DOI: 10.1371/journal.pone.0067277 SCOPUS: 84879468975. PLoS ONE. 2013

Bastos H.N., Osório N.S., Castro A.G., Ramos A., Carvalho T., Meira L., Araújo D., Almeida L., Boaventura R., Fragata P., Chaves C., Costa P., Portela M., Ferreira I., Magalhães S.P., Rodrigues F., Sarmento-Castro R., Duarte R., Guimarães J.T., Saraiva M.,
A prediction rule to stratify mortality risk of patients with pulmonary tuberculosis. PLoS ONE11(9):, 2016. [Journal: Article] [CI: 13] [IF: 2,8]
DOI: 10.1371/journal.pone.0162797 SCOPUS: 84992386220. PLoS ONE. 2016

Cardoso A., Castro A.G., Martins A.C., Carriche G.M., Murigneux V., Castro I., Cumano A., Vieira P., Saraiva M.,
The Dynamics Of Interleukin-10-afforded protection during dextran sulfate sodium-induced colitis. Frontiers in Immunology9(MAR):, 2018. [Journal: Article] [CI: 10] [IF: 4,7]
DOI: 10.3389/fimmu.2018.00400 SCOPUS: 85042686207. Frontiers in Immunology. 2018

Lobo-Silva D., Carriche G.M., Castro A.G., Roque S., Saraiva M.,
Interferon-ß regulates the production of IL-10 by toll-like receptor-activated microglia. GLIA65(9):1439-1451, 2017. [Journal: Article] [CI: 18] [IF: 5,8]
DOI: 10.1002/glia.23172 SCOPUS: 85021258982. GLIA. 2017