The rate of appearance of thyroid hormone nuclear receptor is increased during deoxyribose nucleic acid synthesis in CG cells: Analysis of thymidine-treated GC cells using dense amino acid labeling

L. E. Shapiro, K. R. Patel, Martin I. Surks

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The growth rate of GH-producing rat pituitary tumor cells (GC cells) is dependent on thyroid hormone. Previous studies have shown that GC cells can be partially synchronized in the DNA synthesis phase (S-phase) of the cell cycle by a 25-h incubation with 2 mM thymidine. Measurements in GC cells partially synchronized in S-phase showed a significant increase in cellular thyroid hormone nuclear receptor appearance and disappearance in thymidine-treated GC cells using dense amino acid labeling and subsequent sucrose gradient ultracentrifugation. In comparison with GC cells in asynchronous culture, thymidine treatment causes a steady state increase in thyroid hormone nuclear receptor which results from an increase in the receptor appearance rate without an effect on the disappearance rate. Thus, position in the cell cycle appears to be another factor that influences the appearance rate of nuclear thyroid hormone receptors.

Original languageEnglish (US)
Pages (from-to)2076-2081
Number of pages6
JournalEndocrinology
Volume119
Issue number5
StatePublished - 1986

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Deoxyribose
Thyroid Hormone Receptors
Cytoplasmic and Nuclear Receptors
Thymidine
Nucleic Acids
Amino Acids
Cell Cycle
Ultracentrifugation
Pituitary Neoplasms
Thyroid Hormones
Sucrose
DNA
Growth

ASJC Scopus subject areas

  • Endocrinology
  • Endocrinology, Diabetes and Metabolism

Cite this

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abstract = "The growth rate of GH-producing rat pituitary tumor cells (GC cells) is dependent on thyroid hormone. Previous studies have shown that GC cells can be partially synchronized in the DNA synthesis phase (S-phase) of the cell cycle by a 25-h incubation with 2 mM thymidine. Measurements in GC cells partially synchronized in S-phase showed a significant increase in cellular thyroid hormone nuclear receptor appearance and disappearance in thymidine-treated GC cells using dense amino acid labeling and subsequent sucrose gradient ultracentrifugation. In comparison with GC cells in asynchronous culture, thymidine treatment causes a steady state increase in thyroid hormone nuclear receptor which results from an increase in the receptor appearance rate without an effect on the disappearance rate. Thus, position in the cell cycle appears to be another factor that influences the appearance rate of nuclear thyroid hormone receptors.",
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AU - Surks, Martin I.

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AB - The growth rate of GH-producing rat pituitary tumor cells (GC cells) is dependent on thyroid hormone. Previous studies have shown that GC cells can be partially synchronized in the DNA synthesis phase (S-phase) of the cell cycle by a 25-h incubation with 2 mM thymidine. Measurements in GC cells partially synchronized in S-phase showed a significant increase in cellular thyroid hormone nuclear receptor appearance and disappearance in thymidine-treated GC cells using dense amino acid labeling and subsequent sucrose gradient ultracentrifugation. In comparison with GC cells in asynchronous culture, thymidine treatment causes a steady state increase in thyroid hormone nuclear receptor which results from an increase in the receptor appearance rate without an effect on the disappearance rate. Thus, position in the cell cycle appears to be another factor that influences the appearance rate of nuclear thyroid hormone receptors.

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