Propionibacterium acnes induces an adjuvant effect in B-1 cells and affects their phagocyte differentiation via a TLR2-mediated mechanism

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dc.contributor.author Gambero, Monica [UNIFESP]
dc.contributor.author Teixeira, Daniela [UNIFESP]
dc.contributor.author Butin, Liane [UNIFESP]
dc.contributor.author Ishimura, Mayari Eika [UNIFESP]
dc.contributor.author Mariano, Mario [UNIFESP]
dc.contributor.author Popi, Ana Flavia [UNIFESP]
dc.contributor.author Longo-Maugeri, Ieda Maria [UNIFESP]
dc.date.accessioned 2019-07-22T15:46:53Z
dc.date.available 2019-07-22T15:46:53Z
dc.date.issued 2016
dc.identifier http://dx.doi.org/10.1016/j.imbio.2016.03.003
dc.identifier.citation Immunobiology. Jena, v. 221, n. 9, p. 1001-1011, 2016.
dc.identifier.issn 0171-2985
dc.identifier.uri http://repositorio.unifesp.br/handle/11600/51153
dc.description.abstract B-1 lymphocytes are present in large numbers in the mouse peritoneal cavity, as are macrophages, and are responsible for natural IgM production. These lymphocytes migrate to inflammatory foci and are also involved in innate immunity. It was also demonstrated that B-1 cells are able to differentiated into phagocytes (B-1CDP), which is characterized by expression of F4/80 and increased phagocytic activity. B-1 cell responses to antigens and adjuvants are poorly characterized. It has been shown that Propionibacterium acnes suspensions induce immunomodulatory effects in both macrophages and B-2 lymphocytes. We recently demonstrated that this bacterium has the ability to increase B-1 cell populations both in vitro and in vivo. P. acnes induces B-1CDP differentiation, increases the expression of TLR2, TLR4 and TLR9 and augments the expression of CD80, CD86 and CD40 in B-1 and B-1CDP cells. Because P. acnes has been shown to modulate TLR expression, in this study, we investigated the role of TLR2 and TLR4 in B-1 cell population, including B-1CDP differentiation and phagocytic activity in vitro and in vivo. Interestingly, we have demonstrated that TLR2 signaling could be involved in the increase in the B-1 cell population induced by P. acnes. Furthermore, the early differentiation of B-1CDP is also dependent of TLR2. It was also observed that TLR signals also interfere in the phagocytic ability of B-1 cells and their phagocytes. According to these data, it is clear that P. acnes promotes an important adjuvant effect in B-1 cells by inducing them to differentiate into B-1CDP cells and modulates their phagocytic functions both in vivo and in vitro. Moreover, most of these effects are mediated primarily via TLR2. These data reinforce the findings that such bacterial suspensions have powerful adjuvant properties. The responses of B-1 cells to exogenous stimulation indicate that these cells are important to the innate immune response. (C) 2016 Elsevier GmbH. All rights reserved. en
dc.description.sponsorship FAPESP-Fundacao de Amparo a Pesquisa do Estado de Sao Paulo [2008/58561-0]
dc.description.sponsorship CAPES (Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior)
dc.format.extent 1001-1011
dc.language.iso eng
dc.publisher Elsevier Gmbh, Urban & Fischer Verlag
dc.rights Acesso restrito
dc.subject Adjuvant en
dc.subject Innate immunity en
dc.subject B-1 cells en
dc.subject Toll-receptors en
dc.subject Propionibacterium acnes en
dc.title Propionibacterium acnes induces an adjuvant effect in B-1 cells and affects their phagocyte differentiation via a TLR2-mediated mechanism en
dc.type Artigo
dc.description.affiliation Univ Fed Sao Paulo, Discipline Immunol, Sao Paulo, SP, Brazil
dc.description.affiliationUnifesp Univ Fed Sao Paulo, Discipline Immunol, Sao Paulo, SP, Brazil
dc.description.sponsorshipID FAPESP:2008/58561-0
dc.identifier.doi 10.1016/j.imbio.2016.03.003
dc.description.source Web of Science
dc.identifier.wos WOS:000379559500009



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