A comparison of protein synthesis by liver parenchymal cells isolated from Fischer F344 rats of various ages

John J. Coniglio; Daniel S.H. Liu; Arlan Richardson

doi:10.1016/0047-6374(79)90026-5

A comparison of protein synthesis by liver parenchymal cells isolated from Fischer F344 rats of various ages

John J. Coniglio, Daniel S.H. Liu, Arlan Richardson

Barshop Institute

Research output: Contribution to journal › Article › peer-review

42 Scopus citations

Abstract

Rates of protein synthesis by intact liver parenchymal cells isolated from male Fischer F344 rats ranging in age from 2.5 to 30 months were determined by measuring the incorporation of [³H]valine into acid-insoluble material and the specific activity of the extracellular valine. The rate of protein synthesis decreased 44% from 2.5 to 18 months and then increased slightly (18%) from 18 to 30 months. There was no dramatic change in the types of proteins synthesized by isolated liver parenchymal cells isolated from 2- or 18-month-old rats as determined by SDS-polyacrylamide gel electrophoresis. The ribosomal-transit time by liver parenchymal cells isolated from 18-month-old rats was 60% higher than the ribosomal-transit time of liver parenchymal cells isolated from 4-month-old rats. The fidelity of protein synthesis by parenchymal cells isolated from 4- and 18-month old rats was compared by measuring the incorporation of p-fluorophenyl-alanine (an analogue of phenylalanine) into acid-insoluble material. Although protein synthesis decreased significantly from 4 to 18 months, the fidelity of protein synthesis remained constant.

Original language	English (US)
Pages (from-to)	77-90
Number of pages	14
Journal	Mechanisms of Ageing and Development
Volume	11
Issue number	2
DOIs	https://doi.org/10.1016/0047-6374(79)90026-5
State	Published - Sep 1979

ASJC Scopus subject areas

Aging
Developmental Biology

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title = "A comparison of protein synthesis by liver parenchymal cells isolated from Fischer F344 rats of various ages",

abstract = "Rates of protein synthesis by intact liver parenchymal cells isolated from male Fischer F344 rats ranging in age from 2.5 to 30 months were determined by measuring the incorporation of [3H]valine into acid-insoluble material and the specific activity of the extracellular valine. The rate of protein synthesis decreased 44% from 2.5 to 18 months and then increased slightly (18%) from 18 to 30 months. There was no dramatic change in the types of proteins synthesized by isolated liver parenchymal cells isolated from 2- or 18-month-old rats as determined by SDS-polyacrylamide gel electrophoresis. The ribosomal-transit time by liver parenchymal cells isolated from 18-month-old rats was 60% higher than the ribosomal-transit time of liver parenchymal cells isolated from 4-month-old rats. The fidelity of protein synthesis by parenchymal cells isolated from 4- and 18-month old rats was compared by measuring the incorporation of p-fluorophenyl-alanine (an analogue of phenylalanine) into acid-insoluble material. Although protein synthesis decreased significantly from 4 to 18 months, the fidelity of protein synthesis remained constant.",

author = "Coniglio, {John J.} and Liu, {Daniel S.H.} and Arlan Richardson",

note = "Funding Information: We would like to thank Ms. Diane Burgess and Mr. John Spicer for their technical assistance. This work was supported, in part, by NIH grant 1 R01 AG 00344-02.",

year = "1979",

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AU - Liu, Daniel S.H.

AU - Richardson, Arlan

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N2 - Rates of protein synthesis by intact liver parenchymal cells isolated from male Fischer F344 rats ranging in age from 2.5 to 30 months were determined by measuring the incorporation of [3H]valine into acid-insoluble material and the specific activity of the extracellular valine. The rate of protein synthesis decreased 44% from 2.5 to 18 months and then increased slightly (18%) from 18 to 30 months. There was no dramatic change in the types of proteins synthesized by isolated liver parenchymal cells isolated from 2- or 18-month-old rats as determined by SDS-polyacrylamide gel electrophoresis. The ribosomal-transit time by liver parenchymal cells isolated from 18-month-old rats was 60% higher than the ribosomal-transit time of liver parenchymal cells isolated from 4-month-old rats. The fidelity of protein synthesis by parenchymal cells isolated from 4- and 18-month old rats was compared by measuring the incorporation of p-fluorophenyl-alanine (an analogue of phenylalanine) into acid-insoluble material. Although protein synthesis decreased significantly from 4 to 18 months, the fidelity of protein synthesis remained constant.

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