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Personalized Peptide Arrays for Detection of HLA Alloantibodies in Organ Transplantation
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Self-antigens and rejection: a proteomic analysis.

Joshua Young Cynming Yang1, Tara K Sigdel, Minnie M Sarwal

  • 1Division of Transplant Surgery, Department of Surgery, University of California San Francisco, School of Medicine, San Francisco, California, USA.

Current Opinion in Organ Transplantation
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Summary

Alloantibodies and autoantibodies are crucial in organ transplant rejection. Recent research highlights non-human leukocyte antigen (non-HLA) antibodies and self-antigens, offering new insights into transplant rejection mechanisms.

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Area of Science:

  • Immunology
  • Transplantation Science
  • Proteomics

Background:

  • Allo- and autoantibodies significantly impact acute and chronic allograft rejection.
  • Non-human leukocyte antigen (non-HLA), nondonor-specific antibodies are increasingly recognized for their role in transplant outcomes.
  • Advances in genomics and proteomics have enabled deeper investigation into antibody-mediated rejection.

Purpose of the Study:

  • To review recent investigations into self-antigens and autoantibodies associated with allograft rejection.
  • To summarize proteomic approaches used to identify these targets.
  • To discuss current insights, challenges, and future directions in the field.

Main Methods:

  • Review of recent scientific literature.
  • Analysis of proteomic studies identifying self-antigens.
  • Examination of autoantibody detection methods.

Main Results:

  • Identification of novel self-antigens implicated in acute and chronic allograft rejection.
  • Confirmation of the role of both pre- and post-transplant autoantibodies in rejection.
  • Emerging understanding of non-HLA antibodies in transplant immunology.

Conclusions:

  • Autoantibodies and non-HLA antibodies are critical, yet historically understudied, factors in transplant rejection.
  • Proteomic strategies are vital for discovering new targets in antibody-mediated rejection.
  • Further research is needed to elucidate the precise mechanisms and therapeutic implications.