Synthesis and secretion of beta-nerve growth factor by mouse teratocarcinoma cell lines

Experimental Cell Research
E DicouP Brachet

Abstract

Using a cDNA probe and a two-site enzyme immunoassay, beta-nerve growth factor (beta NGF) synthesis was monitored in several mouse teratocarcinoma cell lines. Trace amounts of NGF mRNA were detected in the embryonal carcinoma (EC) PCC4, F9 and 1003 clones, whereas the myocardial (PCD1), myogenic (1168) and adipogenic (1246) clones contained significantly higher levels of NGF mRNA and secreted mature beta NGF peptide in the culture medium. The 1003, 1168 and 1246 strains were derived from the same teratocarcinoma cell line and their ability or inability to synthesize the neurotrophic factor may reflect a developmental decision for divergent differentiation programs. Induction of NGF mRNA and protein synthesis was observed in a differentiated derivative of an SV40-transformed F9 clone which expresses the viral T antigen. Southern blot analysis of the genomic DNAs revealed no structural alterations of the NGF locus between teratocarcinoma cells that express the NGF gene and those that do not. Similar analysis of the DNA methylation pattern in C-C-G-G sequences using the Hpa II and Msp I isoschizomers indicated no methylation changes of the NGF gene in the teratocarcinoma DNAs. At least two, and probably all four, of the already ma...Continue Reading

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Citations

Jul 5, 2001·The American Journal of Pathology·A W FergusonK R Cho
Jan 29, 1988·Biochemical and Biophysical Research Communications·R HoulgatteP Brachet
May 30, 1995·Neuroreport·M B LachyankarV S Lalitha

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