Transgenic Expression of Cyclin D1 in Thymic Epithelial Precursors Promotes Epithelial and T Cell Development

  • Klug D
  • Crouch E
  • Carter C
  • et al.
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Abstract

We previously reported that precursors within the keratin (K) 8+5+ thymic epithelial cell (TEC) subset generate the major cortical K8+5− TEC population in a process dependent on T lineage commitment. This report demonstrates that expression of a cyclin D1 transgene in K8+5+ TECs expands this subset and promotes TEC and thymocyte development. Cyclin D1 transgene expression is not sufficient to induce TEC differentiation in the absence of T lineage-committed thymocytes because TECs from both hCD3ε transgenic and hCD3ε/cyclin D1 double transgenic mice remain blocked at the K8+5+ maturation stage. However, enforced cyclin D1 expression does expand the developmental window during which K8+5+ cells can differentiate in response to normal hemopoietic precursors. Thus, enhancement of thymic function may be achieved by manipulating the growth and/or survival of TEC precursors within the K8+5+ subset.

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APA

Klug, D. B., Crouch, E., Carter, C., Coghlan, L., Conti, C. J., & Richie, E. R. (2000). Transgenic Expression of Cyclin D1 in Thymic Epithelial Precursors Promotes Epithelial and T Cell Development. The Journal of Immunology, 164(4), 1881–1888. https://doi.org/10.4049/jimmunol.164.4.1881

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