Please use this identifier to cite or link to this item:
|Title:||Transgenic expression of soluble human CD5 enhances experimentally-induced autoimmune and anti-tumoral immune responses|
Martinez, Vanesa G.
Cashman, Kevin S.
Ramos Casals, Manuel
Engel Rocamora, Pablo
Lozano Soto, Francisco
|Publisher:||Public Library of Science (PLoS)|
|Abstract:||CD5 is a lymphoid-specific transmembrane glycoprotein constitutively expressed on thymocytes and mature T and B1a lymphocytes. Current data support the view that CD5 is a negative regulator of antigen-specific receptor-mediated signaling in these cells, and that this would likely be achieved through interaction with CD5 ligand/s (CD5L) of still undefined nature expressed on immune or accessory cells. To determine the functional consequence of loss of CD5/CD5L interaction in vivo, a new transgenic mouse line was generated (shCD5EμTg), expressing a circulating soluble form of human CD5 (shCD5) as a decoy to impair membrane-bound CD5 function. These shCD5EμTg mice showed an enhanced response to autologous antigens, as deduced from the presentation of more severe forms of experimentally inducible autoimmune disease (collagen-induced arthritis, CIA; and experimental autoimmune encephalitis, EAE), as well as an increased anti-tumoral response in non-orthotopic cancer models (B16 melanoma). This enhancement of the immune response was in agreement with the finding of significantly reduced proportions of spleen and lymph node Treg cells (CD4+CD25+FoxP3+), and of peritoneal IL-10-producing and CD5+ B cells, as well as an increased proportion of spleen NKT cells in shCD5EμTg mice. Similar changes in lymphocyte subpopulations were observed in wild-type mice following repeated administration of exogenous recombinant shCD5 protein. These data reveal the relevant role played by CD5/CD5L interactions on the homeostasis of some functionally relevant lymphocyte subpopulations and the modulation of immune responses to autologous antigens.|
|Note:||Reproducció del document publicat a: https://doi.org/10.1371/journal.pone.0084895|
|It is part of:||PLoS One, 2014, vol. 9, num. 1, p. e84895|
|Appears in Collections:||Articles publicats en revistes (Medicina)|
Articles publicats en revistes (IDIBAPS: Institut d'investigacions Biomèdiques August Pi i Sunyer)
Articles publicats en revistes (Biomedicina)
This item is licensed under a Creative Commons License