|
||
J. Exp. Med.,
Volume 188, Number 11, December 7, 1998 1985-1992
By
§



From the * Department of Immunology and Parasitology, Yamagata University School of Medicine,
Yamagata 990-9585, Japan; the To elucidate the role of A1, a new member of the Bcl-2 family of apoptosis regulators active in
hematopoietic cell apoptosis, we established mice lacking A1-a, a subtype of the A1 gene in mice (A1-a
Department of Molecular and Cellular Biology and the § Laboratory
of Embryonic and Genetic Engineering, Medical Institute of Bioregulation, Kyushu University,
Fukuoka 812-8582, Japan; and the
Department of Dermatology, Gunma University School of
Medicine, Maebashi 371-8511, Japan
/
mice). Spontaneous apoptosis of peripheral blood neutrophils of A1-a
/
mice
was enhanced compared with that of either wild-type mice or heterozygous mutants (A1-a+/
mice). Neutrophil apoptosis inhibition induced by lipopolysaccharide treatment in vitro or
transendothelial migration in vivo observed in wild-type mice was abolished in both A1-a
/
and A1-a+/
animals. On the other hand, the extent of tumor necrosis factor
-induced acceleration of neutrophil apoptosis did not differ among A1-a
/
, A1-a+/
, and wild-type mice.
The descending order of A1 mRNA expression was wild-type, A1-a+/
, and A1-a
/
. Taken
together, these results suggest that A1 is involved in inhibition of certain types of neutrophil
apoptosis.
This article has been cited by other articles:
| TABLE OF CONTENTS |
|