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Emergency granulopoiesis promotes neutrophil-dendritic cell encounters that prevent mouse lung allograft acceptance
| Content Provider | Scilit |
|---|---|
| Author | Kreisel, Daniel Sugimoto, Seiichiro Zhu, Jihong Nava, Ruben Li, Wenjun Okazaki, Mikio Yamamoto, Sumiharu Ibrahim, Mohsen Huang, Howard J. Toth, Kelsey A. Ritter, Jon H. Krupnick, Alexander S. Miller, Mark J. Gelman, Andrew E. |
| Copyright Year | 2011 |
| Description | The mechanisms by which innate immune signals regulate alloimmune responses remain poorly understood. In the present study, we show by intravital 2-photon microscopy direct interactions between graft-infiltrating neutrophils and donor CD11c+ dendritic cells (DCs) within orthotopic lung allografts immediately after reperfusion. Neutrophils isolated from the airways of lung transplantation recipients stimulate donor DCs in a contact-dependent fashion to augment their production of IL-12 and expand alloantigen-specific IFN-γ+ T cells. DC IL-12 expression is largely regulated by degranulation and induced by TNF-α associated with the neutrophil plasma membrane. Extended cold ischemic graft storage enhances G-CSF–mediated granulopoiesis and neutrophil graft infiltration, resulting in exacerbation of ischemia-reperfusion injury after lung transplantation. Ischemia reperfusion injury prevents immunosuppression-mediated acceptance of mouse lung allografts unless G-CSF–mediated granulopoiesis is inhibited. Our findings identify granulopoiesis-mediated augmentation of alloimmunity as a novel link between innate and adaptive immune responses after organ transplantation. |
| Related Links | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3234670/pdf |
| Ending Page | 6182 |
| Page Count | 11 |
| Starting Page | 6172 |
| DOI | 10.1182/blood-2011-04-347823 |
| Journal | Blood |
| Issue Number | 23 |
| Volume Number | 118 |
| Language | English |
| Publisher | American Society of Hematology |
| Publisher Date | 2011-12-01 |
| Access Restriction | Open |
| Subject Keyword | Research and Experimental Medicine Neutrophil Innate Immune Granulopoiesis Acceptance of Mouse Lung Allografts Journal: Blood (Vol- 137, Issue- 23) |
| Content Type | Text |
| Resource Type | Article |