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DOI: 10.1677/jme.0.0280033
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Journal of Molecular Endocrinology, Vol 28, Issue 1, 33-44
Copyright © 2002 by Society for Endocrinology

Articles

Expression profile of active genes in the human pituitary gland

S Tanaka, K Tatsumi, K Okubo, K Itoh, S Kawamoto, K Matsubara, and N Amino


To characterize transcripts abundantly expressed in the human pituitary gland in general as well as to isolate novel transcripts expressed specifically in this gland, we generated an expression profile of the active genes transcribed in it. A total of 1015 randomly collected 3prime prime or minute expressed sequence tags (ESTs) (gene signatures, GSs) were grouped into 527GS species. The results showed the relative expression levels of genes in the pituitary gland. The genes comprising more than 1% of total mRNA were prolactin, growth hormone and chromogranin B genes. When known genes were categorized, the genes for pituitary hormones were the most actively transcribed, followed by the genes for ribosomal proteins, nuclear proteins and secretory granule proteins. Through comparison of this gene expression profile with the BodyMap database containing profiles generated from 63 other human tissues, we obtained 11 genes which appeared to be specifically expressed in the pituitary gland. In addition to the eight known genes, we identified three novel pituitary-specific transcripts which encode putative proteins: pituitary gland specific factor 1a (PGSF1a), PGSF1b and PGSF2. This expression profile method is a novel approach to the isolation of pituitary-specific genes that may have important functions.


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