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Intrathymic origins of T-ALL

ABSTRACT: Leukemia cells are considered developmentally 'frozen', and their phenotype is thought to reflect their stage of origin. To gain insights into the cell population from which T-ALL arises, we compared by global gene expression profiling T-ALL samples (n = 10) to different stages of T cell development, following the order from early thymic progenitor (ETP), to triple negative (TN) TN2, to TN3, to TN4, to immature single positive (ISP), to double positive (DP) thymocytes. Comparison of global gene expression between T-ALL samples and various stages of T cell development.

ORGANISM(S): Mus musculus

SUBMITTER: Vera Martins

PROVIDER: E-GEOD-56416 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Cell competition is a tumour suppressor mechanism in the thymus.

Martins Vera C VC Busch Katrin K Juraeva Dilafruz D Blum Carmen C Ludwig Carolin C Rasche Volker V Lasitschka Felix F Mastitsky Sergey E SE Brors Benedikt B Hielscher Thomas T Fehling Hans Joerg HJ Rodewald Hans-Reimer HR

Nature 20140514 7501

Cell competition is an emerging principle underlying selection for cellular fitness during development and disease. Competition may be relevant for cancer, but an experimental link between defects in competition and tumorigenesis is elusive. In the thymus, T lymphocytes develop from precursors that are constantly replaced by bone-marrow-derived progenitors. Here we show that in mice this turnover is regulated by natural cell competition between 'young' bone-marrow-derived and 'old' thymus-reside ...[more]

PMID: 24828041

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Cell competition is a tumor suppressor mechanism in the thymus.

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