Anti-CCL25 antibody prolongs skin allograft survival by blocking CCR9 expression and impairing splenic T-cell function

Arch Immunol Ther Exp (Warsz). 2013 Jun;61(3):237-44. doi: 10.1007/s00005-013-0223-4. Epub 2013 Mar 2.


Chemokines, by virtue of their ability to recruit immune cells into allografts, play critical roles in acute transplantation rejection. CCR9 and its ligand, CCL25, is one of the key regulators of thymocyte migration and maturation in normal and inflammatory conditions. Moreover, several studies have revealed that high expression of CCR9 and CCL25 participated in many kinds of diseases. However, the role of CCR9 in allograft rejection is still unclear. In this study, we established a murine skin transplantation model of acute rejection. Our findings showed that the proportion of CCR9-expressing T cells was significantly increased in the spleen of allotransplanted mice compared with syngeneic transplantation. Furthermore, expression of CCL25 in allograft was similarly increased. Neutralization of CCL25 by intravenous injection of anti-CCL25 monoclonal antibody significantly prolonged skin allograft survival, decreased the number of infiltrating cells, and simultaneously suppressed the chemotactic ability and the proliferation of the splenic T cells in response to allogeneic antigens. Finally, blockade of CCL25 also diminished the secretion of IFN-γ by splenic T cells. These studies indicated that CCR9/CCL25 was involved in acute transplantation rejection and anti-CCL25 strategies might be useful in preventing acute rejection.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acute Disease
  • Animals
  • Antibodies, Monoclonal / administration & dosage
  • Antibodies, Monoclonal / pharmacology*
  • Cell Proliferation / drug effects
  • Chemokines, CC / antagonists & inhibitors*
  • Chemokines, CC / immunology
  • Chemotaxis, Leukocyte / drug effects
  • Disease Models, Animal
  • Female
  • Graft Rejection / immunology
  • Graft Rejection / prevention & control*
  • Graft Survival / drug effects*
  • Immunosuppressive Agents / administration & dosage
  • Immunosuppressive Agents / pharmacology*
  • Injections, Intravenous
  • Interferon-gamma / metabolism
  • Lymphocyte Activation / drug effects
  • Mice
  • Mice, Inbred BALB C
  • Mice, Inbred C57BL
  • Receptors, CCR / immunology*
  • Skin / drug effects*
  • Skin / immunology
  • Skin Transplantation / adverse effects
  • Skin Transplantation / immunology*
  • Spleen / drug effects*
  • Spleen / immunology
  • T-Lymphocytes / drug effects*
  • T-Lymphocytes / immunology
  • Time Factors


  • Antibodies, Monoclonal
  • CC chemokine receptor 9
  • Ccl25 protein, mouse
  • Chemokines, CC
  • Immunosuppressive Agents
  • Receptors, CCR
  • Interferon-gamma