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Immune Shielding of Human Heart Valves: A Proof-of-Concept Study of HLA-Targeting Therapy for Transplantations

  • Marijn C. Peters
  • , Arnaud Zaldumbide
  • , Esmee J. Groeneveld
  • , Martijn J.W.E. Rabelink
  • , Janneke H. Peerlings
  • , Antoon van den Bogaerdt
  • , Carlijn V.C. Bouten
  • , Rob C. Hoeben
  • , Marie Jose Goumans (Corresponding author)
  • , Abraham van Wijk (Corresponding author)

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

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Samenvatting

Children born with defective heart valves require multiple donor valve replacements throughout life, because these cannot grow and can cause early failure through immune degeneration. This study tests the lentiviral delivery of viral immune evasion genes US2 and human serpin 9 to shield human heart valves from immune rejection. The results show we can efficiently down-regulate human leukocyte antigen expression in heart valve cells and in intact heart valve tissue resulting in decreased activity of a human leukocyte antigen–reactive CD8+ T-cell clone without inducing cytotoxicity. This study demonstrates immune shielding of human heart valves and brings us closer to a durable valve graft in pediatric patients.

Originele taal-2Engels
Pagina's (van-tot)1345-1359
Aantal pagina's15
TijdschriftJACC: Basic to Translational Science
Volume9
Nummer van het tijdschrift11
Vroegere onlinedatum11 sep. 2024
DOI's
StatusGepubliceerd - nov. 2024

Financiering

The authors would like to thank cardiothoracic surgeon Mark Hazenkamp at the Leiden University Medical Centre for providing the valves from patients undergoing surgical valve replacement.

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