Meta-analysis of microarray-derived data from PACAP-deficient adrenal gland in vivo and PACAP-treated chromaffin cells identifies distinct classes of PACAP-regulated genes.
Initial PACAP-regulated transcriptomes of PACAP-treated cultured chromaffin cells, and the adrenal gland of wild-type versus PACAP-deficient mice, have been assembled using microarray analysis. These were compared to previously acquired PACAP-regulated transcriptome sets from PC12 cells and mouse central nervous system, using the same microarray platform. The Ingenuity Pathways Knowledge Base was then employed to group regulated transcripts into common first and second messenger regulatory clusters. The purpose of our meta-analysis was to identify sets of genes regulated distinctly or in common by the neurotransmitter/neurotrophin PACAP in specific physiological contexts. Results suggest that PACAP participates in both the basal differentiated expression, and the induction upon physiological stimulation, of distinct sets of transcripts in neuronal and endocrine cells. PACAP in both developmental and acute regulatory paradigms acts on target genes also regulated by either TNFalpha or TGFbeta, two first messengers acting on transcription mainly through NFkappaB and Smads, respectively.
Samal
Babru
B
Section on Molecular Neuroscience, Laboratory of Cellular and Molecular Regulation, 9000 Rockville Pike, Building 49, Rm. 5A-68, NIH, Bethesda, MD 20892, USA.
Gerdin
Matthew J
MJ
Huddleston
David
D
Hsu
Chang-Mei
CM
Elkahloun
Abdel G
AG
Stroth
Nikolas
N
Hamelink
Carol
C
Eiden
Lee E
LE
D000311:Adrenal Glands / Q000378:metabolism*; D000818:Animals; D002417:Cattle; D002460:Cell Line; D002838:Chromaffin System / Q000166:cytology / Q000187:drug effects* / Q000378:metabolism; D020869:Gene Expression Profiling; D005786:Gene Expression Regulation / Q000187:drug effects*; D051379:Mice; D008957:Models, Genetic; D020411:Oligonucleotide Array Sequence Analysis / Q000379:methods*; D016716:PC12 Cells; D051219:Pituitary Adenylate Cyclase-Activating Polypeptide / Q000172:deficiency / Q000494:pharmacology*; D051381:Rats
D051219:Pituitary Adenylate Cyclase-Activating Polypeptide