Enforcing order within a complex locus: current perspectives on the control of V(D)J recombination at the murine T-cell receptor alpha/delta locus.

Journal Article (Journal Article;Review)

V(D)J recombination proceeds according to defined developmental programs at T-cell receptor (TCR) and immunoglobulin loci as a function of cell lineage and stage of differentiation. Although the molecular details are still lacking, such regulation is thought to occur at the level of accessibility of chromosomal recombination signal sequences to the recombinase. The unique and complex organization of the TCRalpha/delta locus poses intriguing regulatory challenges in this regard: embedded TCRalpha and TCRdelta gene segments rearrange at distinct stages of thymocyte development, there is a highly regulated progression of primary followed by secondary rearrangements involving Jalpha segments, and there are important developmental constraints on V gene segment usage. The locus therefore provides a fascinating laboratory in which to explore the basic mechanisms underlying developmental control. We provide here a current view of cis-acting mechanisms that enforce the TCRalpha/delta locus developmental program, and we emphasize the unresolved issues that command the attention of our and other laboratories.

Full Text

Duke Authors

Cited Authors

  • Krangel, MS; Carabana, J; Abbarategui, I; Schlimgen, R; Hawwari, A

Published Date

  • August 2004

Published In

Volume / Issue

  • 200 /

Start / End Page

  • 224 - 232

PubMed ID

  • 15242408

International Standard Serial Number (ISSN)

  • 0105-2896

Digital Object Identifier (DOI)

  • 10.1111/j.0105-2896.2004.00155.x


  • eng

Conference Location

  • England