
Philpott KL, Viney JL, Kay G, Rastan S, Gardiner EM, Chae S, Hayday AC, Owen MJ:
Lymphoid development in mice congenitally lacking T cell receptor
alpha beta-expressing cells.
Science 1992 Jun 5;256(5062):1448-52
ABSTRACT
Vertebrate T cells express either an alpha beta or gamma delta T
cell receptor (TCR). The developmental relatedness of the two cell
types is unresolved. alpha beta + T cells respond to specific
pathogens by collaborating with immunoglobulin-producing B cells in
distinct lymphoid organs such as the spleen and Peyer's patches. The
precise influence of alpha beta + T cells on B cell development is
poorly understood. To investigate the developmental effects of alpha
beta + T cells on B cells and gamma delta + T cells, mice homozygous
for a disrupted TCR alpha gene were generated. The homozygotes
showed elimination of alpha beta + T cells and the loss of thymic
medullae. Despite this, gamma delta + T cells developed in normal
numbers, and there was an increase in splenic B cells.