Identification of novel factors that regulate GnRH gene expression and neuronal migration.

Abstract:

:We used differential display PCR on two GnRH producing cell lines to identify genes involved in GnRH gene expression and neuronal migration. RNA from Gn10 cells (derived from a tumor in the olfactory area when GnRH neurons are migrating and make low levels of GnRH) and from GT1-7 cells (derived from a tumor in forebrain when GnRH neurons are postmigratory and make high levels of GnRH) was reverse transcribed into cDNA. The cDNA was amplified using three anchored primers and eight random primers from each cell line and products from duplicate reactions electrophoresed in parallel in a denaturing acrylamide gel. Differentially expressed cDNAs were excised, reamplified and used as probes in Northern analysis of total RNA from each cell line to confirm differentially expressed RNA. The cDNAs were sequenced and compared to the Genbank database. Four of five clones isolated from GT1-7 GnRH neurons are novel, while four of five clones isolated from Gn10 cells have homology to known DNA sequences. One clone, Gn8-01 encodes adhesion related kinase (Ark), a molecule that has an N-terminal domain characteristic of cell adhesion molecules and whose kinase domain may play a role in protection from apoptosis. Together these data support the usefulness of the technique to identify novel genes that play a role in the control of GnRH expression and neuronal migration.

journal_name

Endocrinology

journal_title

Endocrinology

authors

Fang Z,Xiong X,James A,Gordon DF,Wierman ME

doi

10.1210/endo.139.8.6221

subject

Has Abstract

pub_date

1998-08-01 00:00:00

pages

3654-7

issue

8

eissn

0013-7227

issn

1945-7170

journal_volume

139

pub_type

杂志文章