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  • 1 Department of Pathology and Laboratory Medicine, University of Wisconsin, School of Medicine and Public Health, Madison, WI, 53706, USA
  • 2 Cellular and Molecular Pathology Training Program, University of Wisconsin, Madison, USA
  • 3 Microbiology Doctoral Training Program, University of Wisconsin, Madison, USA
  • 4 5468 MSC, 1300 University Ave, Madison, WI, 53705, USA
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Abstract

Granulomas are the interface between host and mycobacteria, and are crucial for the surivival of both species. While macrophages are the main cellular component of these lesions, different lymphocyte subpopulations within the lesions also play important roles. Lymphocytes are continuously recruited into these inflammatory lesions via local vessels to replace cells that are either dying or leaving; however, their rate of replacement is not known. Using a model of granuloma transplantation and fluorescently labeled cellular compartments we report that, depending on the subpopulation, 10–80%, of cells in the granuloma are replaced within one week after transplantation. CD4+ T cells specific for Mycobacterium antigen entered transplanted granulomas at a higher frequency than Foxp3+ CD4+ T cells by one week. Interestingly, a small number of T lymphocytes migrated out of the granuloma to secondary lymphoid organs. The mechanisms that define the differences in recruitment and efflux behind each subpopulation requires further studies. Ultimately, a better understanding of lymphoid traffic may provide new ways to modulate, regulate, and treat granulomatous diseases.

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Language: English

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Publication Programme: 2020. Vol. 10. (Online Only)

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Editor(s)-in-Chief: Dunay, Ildiko Rita

Editor(s)-in-Chief: Heimesaat, Markus M.

Vice Editor(s)-in-Chief: Fuchs, Anja

Editorial Board

Chair of the Editorial Board:
Jeffrey S. Buguliskis (Thomas Jefferson University, USA)

  • Jörn Albring (University of Münster, Germany)
  • Stefan Bereswill (Charité - University Medicine Berlin, Germany)
  • Dunja Bruder (University of Megdeburg, Germany)
  • Jan Buer (University of Duisburg, Germany)
  • Jeff Buguliskis (Thomas Jefferson University, USA)
  • Edit Buzas (Semmelweis University, Hungary)
  • Charles Collyer (University of Sydney, Australia)
  • Renato Damatta (UENF, Brazil)
  • Ivelina Damjanova (Semmelweis University, Hungary)
  • Maria Deli (Biological Research Center, HAS, Hungary)
  • Olgica Djurković-Djaković (University of Belgrade, Serbia)
  • Jean-Dennis Docquier (University of Siena, Italy)
  • Anna Erdei (Eötvös Loránd University, Hungary)
  • Zsuzsanna Fabry (University of Washington, USA)
  • Beniam Ghebremedhin (Witten/Herdecke University, Germany)
  • Nancy Guillen (Institute Pasteur, France)
  • Georgina L. Hold (University of Aberdeen, United Kingdom)
  • Ralf Ignatius (Charité - University Medicine Berlin, Germany)
  • Zsuzsanna Izsvak (MDC-Berlin, Germany)
  • Achim Kaasch (University of Cologne, Germany)
  • Tamás Laskay (University of Lübeck, Germany)
  • Oliver Liesenfeld (Roche, USA)
  • Shreemanta Parida (Vaccine Grand Challenge Program, India)
  • Matyas Sandor (University of Wisconsin, USA)
  • Ulrich Steinhoff (University of Marburg, Germany)
  • Michal Toborek (University of Miami, USA)
  • Mary Jo Wick (University of Gothenburg, Sweden)
  • Susanne A. Wolf (MDC-Berlin, Germany)

 

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