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Updated: May 25, 2026
08:23
Xenograft Skin Model to Manipulate Human Immune Responses In Vivo
Published on: June 29, 2022
Innate cellular immunity and xenotransplantation
1Columbia Center for Translational Immunology, Columbia University College of Physicians and Surgeons, New York 10032, USA.
Current Opinion in Organ Transplantation
|January 21, 2012
Summary
Innate immune responses significantly contribute to xenograft rejection, driven by xenoantigen recognition and receptor incompatibility. Overcoming these innate responses is crucial for successful xenotransplantation.
Area of Science:
- Immunology
- Transplantation Biology
- Xenotransplantation Research
Background:
- Innate immune responses play a critical role in the rejection of xenografts.
- Understanding innate cellular xenoreactivity is key to advancing xenotransplantation.
- Recent progress has shed light on the mechanisms of innate immune activation in xenograft rejection.
Purpose of the Study:
- To review recent advancements in understanding xenograft rejection mediated by innate immune responses.
- To focus on the role and mechanisms of innate cellular xenoreactivity.
- To identify strategies for overcoming innate immune barriers in xenotransplantation.
Main Methods:
- Comprehensive literature review of recent studies on innate immunity and xenograft rejection.
- Analysis of findings related to innate cellular xenoreactivity.
- Synthesis of evidence regarding antibody-dependent and antibody-independent innate immune responses.
Main Results:
- Innate immune cell activation in xenograft rejection involves xenoantigen recognition and mismatched inhibitory receptor-ligand interactions.
- Both antibody-dependent and antibody-independent innate immune responses contribute to xenograft rejection.
- Phagocytic cells within xenografts can cause recipient thrombocytopenia.
Conclusions:
- Successful clinical xenotransplantation necessitates strategies to overcome innate immune responses.
- Improved immunosuppressive and tolerance induction protocols are needed.
- Genetic modification of donor animals is essential for advancing xenotransplantation.
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Overview
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The human immune system is a complex defense mechanism that protects the body from harmful pathogens and foreign substances. It comprises two crucial components: innate and adaptive immunity.
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Complete Antigens
Complete antigens possess both immunogenicity and reactivity.
Complete Antigens
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01:24Tissue Transplantation
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