INVESTIGADORES
BEKINSCHTEIN Pedro Alejandro
artículos
Título:
Neonatal infection with a milk-borne virus is independent of beta7 integrin- and L-selectin-expressing lymphocytes.
Autor/es:
JENNIFER CZARNESKI; PAULA BERGUER; PEDRO BEKINSCHTEIN; DAVID C. KIM; PAUL HAKIMPOUR; NORBERT WAGNER; IRENE NEPOMNASCHY; ISABEL PIAZZON; SUSAN R. ROSS
Revista:
EUROPEAN JOURNAL OF IMMUNOLOGY
Referencias:
Año: 2002 vol. 32 p. 945 - 956
ISSN:
0014-2980
Resumen:
Mouse mammary tumor virus (MMTV) is acquired by neonates through milk
and first infects lymphocytes in Peyer's patches. We show here that
newborn mice lacking beta7 integrin or L-selectin were infected with
MMTV at wild-type levels in both their lymphoid and mammary tissues.
Superantigen-mediated activation and cognate T cell deletion were also
unimpaired in both types of null mice. A large proportion of neonatal
Peyer's patch lymphocytes in wild-type mice were beta7 and beta1
integrin low and both populations increased in response to MMTV
infection. These results suggest that adhesion molecules other than
beta7 integrin or L-selectin play a role in lymphocyte homing in the
gut, peripheral lymph nodes and mammary gland in response to MMTV
infection.