Heat Sensitivity, Thermotolerance, and Profile of Protein Synthesis of Human Bone Marrow Progenitors

Research output: Contribution to journalArticle

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Abstract

Hyperthermic sensitivity, kinetics of thermotolerance induction and decay, and profile of heat shock protein synthesis were studied in human granulocyte-macrophage progenitors and nucleated bone marrow cells, respectively. The D0 of the heat survival curves of human granulocyte-macrophage colony-forming cells at 43°C, 44°C, and 45°C were 23,12, and 5 min, respectively. The kinetics of thermotolerance induction was measured with a triggering dose of 44°C/20 min, 45oC/10 min, 41°C/2 h, and 42°C/1 and 4 h. The cells were then challenged with 44°C or 45°C after incubation for 2, 4,6,24, and 48 h at 37°C. In all cases, except for 41°C/2 h, thermotoler-ance was maximum at 2 to 6 h, began to decay at 24 h, and decayed completely by 48 h. At the 41°C/2-h triggering dose, the thermotolerance decayed completely by 24 h. The heat shock protein synthesis was measured after a triggering dose of 44°C/20 min or 45°C/10 min. Synthesis of Mr 70,000 and 87,000 heat shock proteins in the total nucleated bone marrow cells was evident at least for 8 h after the initial heating.

Original languageEnglish (US)
Pages (from-to)3630-3633
Number of pages4
JournalCancer Research
Volume48
Issue number13
StatePublished - Jan 1 1988
Externally publishedYes

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Heat-Shock Proteins
Hot Temperature
Bone Marrow
Bone Marrow Cells
Granulocyte-Macrophage Progenitor Cells
Proteins
Granulocytes
Heating
Macrophages
Survival
Thermotolerance

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

Cite this

Heat Sensitivity, Thermotolerance, and Profile of Protein Synthesis of Human Bone Marrow Progenitors. / Mivechi, Nahid F.

In: Cancer Research, Vol. 48, No. 13, 01.01.1988, p. 3630-3633.

Research output: Contribution to journalArticle

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