DNA damage and repair in epithelium after allogeneic hematopoietic stem cell transplantation

Maria Themeli, Alexandros Spyridonidis

Research output: Contribution to journalReview articleAcademicpeer-review

4 Citations (Scopus)


Allogeneic hematopoietic stem cell transplantation (allo-HSCT) in humans, following hematoablative treatment, results in biological chimeras. In this case, the transplanted hematopoietic, immune cells and their derivatives can be considered the donor genotype, while the other tissues are the recipient genotype. The first sequel, which has been recognized in the development of chimerical organisms after allo-HSCT, is the graft versus host (GvH) reaction, in which the new developed immune cells from the graft recognize the host's epithelial cells as foreign and mount an inflammatory response to kill them. There is now accumulating evidence that this chronic inflammatory tissue stress may contribute to clinical consequences in the transplant recipient. It has been recently reported that host epithelial tissue acquire genomic alterations and display a mutator phenotype that may be linked to the occurrence of a GvH reaction. The current review discusses existing data on this recently discovered phenomenon and focuses on the possible pathogenesis, clinical significance and therapeutic implications.

Original languageEnglish
Pages (from-to)15813-15825
Number of pages13
JournalInternational journal of molecular sciences
Issue number12
Publication statusPublished - Dec 2012


  • Bone marrow transplantation
  • Graft-versus-host reaction
  • Microsatellite instability
  • Mismatch repair

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