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Macrophages in solid organ transplantation.

Xinguo Jiang1, Wen Tian, Yon K Sung

  • 1Department of Medicine, VA Palo Alto Health Care System/Division of Pulmonary/Critical Care, Stanford University School of Medicine, Stanford, CA 94304, USA. xinguoj@stanford.edu.

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Macrophages play dual roles in organ transplantation, causing injury and promoting repair. Targeting these versatile immune cells offers promising therapeutic strategies for improving transplant outcomes.

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Area of Science:

  • Immunology
  • Transplantation Biology
  • Cellular Biology

Background:

  • Macrophages are plastic hematopoietic cells with diverse functions.
  • Their role in solid organ transplantation is complex, influencing both injury and repair.
  • Recent research highlights their involvement in allograft rejection and ischemia-reperfusion injury.

Purpose of the Study:

  • To review the multifaceted roles of macrophages in solid organ transplantation.
  • To focus on macrophage-mediated tissue injury, repair, and remodeling processes.
  • To explore emerging therapeutic strategies targeting macrophages in transplantation.

Main Methods:

  • Literature review of recent studies on macrophages in solid organ transplantation.
  • Analysis of mechanisms underlying macrophage-induced allograft injury.
  • Examination of macrophage contributions to tissue repair and vascular remodeling.

Main Results:

  • Macrophages can exacerbate allograft injury but also promote tissue repair.
  • They play critical roles in ischemia-reperfusion injury and acute rejection.
  • Macrophage-mediated vascular injury, repair, and remodeling are key aspects.

Conclusions:

  • Macrophages are central players in solid organ transplant outcomes.
  • Targeting macrophages presents a promising avenue for novel therapeutic interventions.
  • Further research into macrophage-centered therapies could significantly improve transplant recipient prognosis.