Developmental regulation of cytokine expression in the mouse brain.
Expression of four cytokine genes, transforming growth factor (TGF) beta 2, tumor necrosis factor-alpha (TNF-alpha), interleukin-6 (IL-6), and macrophage colony-stimulating factor (CSF-1 also known as M-CSF) was examined to determine whether these genes are developmentally regulated in the brain. Northern blots were performed on RNA isolated from the mouse brain from embryonic day 15 (E15) through postnatal day 9. TGF beta 2 gene expression was relatively high in the earliest embryos studied and decreased after E16-E17, and the three transcripts were developmentally regulated. TNF-alpha and IL-6 were detected in total RNA on all days studied. CSF-1 was detected only in polyadenylated RNA. The data suggest that expression of these cytokines is related to specific developmental events that share cellular functions with regenerative or inflammatory processes.
Burns
T M
TM
Department of Anatomy and Cell Biology, University of Kansas Medical Center, Kansas City 66160-7400.
Clough
J A
JA
Klein
R M
RM
Wood
G W
GW
Berman
N E
NE
D000818:Animals; D015152:Blotting, Northern; D001921:Brain / Q000196:embryology / Q000254:growth & development / Q000378:metabolism*; D016207:Cytokines / Q000096:biosynthesis*; D005786:Gene Expression Regulation; D015850:Interleukin-6 / Q000096:biosynthesis; D016173:Macrophage Colony-Stimulating Factor / Q000096:biosynthesis; D051379:Mice; D016212:Transforming Growth Factor beta / Q000096:biosynthesis; D014409:Tumor Necrosis Factor-alpha / Q000096:biosynthesis
D016207:Cytokines; D015850:Interleukin-6; D016212:Transforming Growth Factor beta; D014409:Tumor Necrosis Factor-alpha; D016173:Macrophage Colony-Stimulating Factor