Thymocyte self-renewal and oncogenic risk in immunodeficient mouse models: relevance for human gene therapy clinical trials targeting haematopoietic stem cell populations?

Samantha L. Ginn, Matthew P. McCormack, Ian E. Alexander

Research output: Contribution to journalReview ArticleResearchpeer-review

4 Citations (Scopus)


Emerging evidence indicates that thymocyte self-renewal induced by progenitor deprivation carries an oncogenic risk that is modulated by intra-thymic competition from differentiation-committed cells. Here we discuss formative studies demonstrating that, in mice, early thymocytes acquire self-renewing potential when thymic progenitor supply is sub-physiological and the importance of cellular competition with this at-risk cell population to prevent lymphoid malignancy. We also consider the possibility that increased thymic residency time, established under conditions of limited cellular competition, may have contributed to oncogenesis observed in early SCID-X1 trials when combined with insertional activation of proto-oncogenes such as LMO2.

Original languageEnglish
Pages (from-to)771-776
Number of pages6
JournalMammalian Genome
Issue number11-12
Publication statusPublished - 1 Dec 2018

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