Sep 11, 1979

Nonrepetitive DNA transcription in normal and regenerating rat liver

Nucleic Acids Research
L J GradyA B North


Initial RNA excess hybridization experiments employing total cell RNA and the complete complement of nonrepetitive DNA sequences showed no differences between normal and regenerating rat liver. However, when the DNA from the RNA-DNA hybrids was isolated and then reacted with homologous and heterologous RNAs the sensitivity of the assay was sufficiently improved to reveal that some of the nonrepetitive DNA transcrips present in normal liver are missing at 24 h and 48 h after a 70% partial hepatectomy. Additional experiments showed that while some of the missing sequences were common to both stages of regeneration, some were also different. The data thus suggest both quantitative and qualitative changes during liver regeneration in the population of RNA molecules transcribed from nonrepetitive DNA.

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Mentioned in this Paper

Nucleic Acid Hybridization Procedure
Transcription, Genetic
Natural Regeneration
Genomic Hybridization
Homologous Gene
Rat Liver
Liver Regeneration Disorder

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