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M9550839.TXT
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1995-03-25
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Document 0839
DOCN M9550839
TI Expression of the Runt domain-encoding PEBP2 alpha genes in T cells
during thymic development.
DT 9505
AU Satake M; Nomura S; Yamaguchi-Iwai Y; Takahama Y; Hashimoto Y; Niki M;
Kitamura Y; Ito Y; Department of Viral Oncology, Kyoto University,
Japan.
SO Mol Cell Biol. 1995 Mar;15(3):1662-70. Unique Identifier : AIDSLINE
MED/95166251
AB The PEBP2 alpha A and PEBP2 alpha B genes encode the DNA-binding subunit
of a murine transcription factor, PEBP2, which is implicated as a
T-cell-specific transcriptional regulator. These two related genes share
the evolutionarily conserved region encoding the Runt domain. PEBP2
alpha B is the murine counterpart of human AML1, which is located at the
breakpoints of the 8;21 and 3;21 chromosome translocations associated
with acute myeloid leukemia. Northern (RNA) blots of various adult mouse
tissues revealed that the levels of expression of both genes were most
prominent in the thymus. Furthermore, transcripts of PEBP2 alpha A and
mouse AML1/PEBP2 alpha B were detected in T lymphocytes in the thymuses
from day 16 embryos and newborns, as well as 4-week-old adult mice, by
in situ hybridization. The expression of the genes persisted in
peripheral lymph nodes of adult mice. The transcripts were detected in
all the CD4- CD8-, CD4+ CD8+, CD4+ CD8-, and CD4- CD8+ cell populations.
The results indicated that both genes are expressed in T cells
throughout their development, supporting the notion that PEBP2 is a
T-cell-specific transcription factor. Transcripts of mouse AML1/PEBP2
alpha B were also detected in day 12 fetal hematopoietic liver and in
the bone marrow cells of newborn mice. The implication of mouse
AML1/PEBP2 alpha B expression in hematopoietic cells other than those of
T-cell lineage is discussed in relation to myeloid leukemogenesis.
DE Acute Disease Aging/*METABOLISM Animal Animals, Newborn Antisense
Elements (Genetics) Base Sequence Blotting, Northern Bone
Marrow/METABOLISM Chromosomes, Human, Pair 21 Chromosomes, Human, Pair
3 Chromosomes, Human, Pair 8 Conserved Sequence CD4-Positive
T-Lymphocytes/METABOLISM CD8-Positive T-Lymphocytes/METABOLISM
DNA-Binding Proteins/*BIOSYNTHESIS/*GENETICS Embryo Evolution Human
Leukemia, Myeloid/GENETICS Liver/METABOLISM Lymph Nodes/METABOLISM
Male Mice Mice, Inbred C57BL Mice, Inbred ICR Mice, Nude Neoplasm
Proteins/BIOSYNTHESIS/GENETICS Organ Specificity Support, Non-U.S.
Gov't T-Lymphocytes/*METABOLISM/PHYSIOLOGY Thymus Gland/GROWTH &
DEVELOPMENT/*METABOLISM Transcription Factors/*BIOSYNTHESIS/*GENETICS
Transcription, Genetic Translocation (Genetics) JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).