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Age-related changes of heat shock protein gene transcription in human peripheral blood mononuclear cells
Y Deguchi1, S Negoro, S Kishimoto
1Third Department of Internal Medicine, Osaka University School of Medicine, Japan.
Insights
Aging reduces heat shock 70 kDa protein (hsp 70) gene transcription in blood cells. This age-related decrease in hsp 70 may impair the ability of cells to cope with heat stress.
Area of Science:
- Immunology
- Cellular Biology
- Gerontology
Background:
- Heat shock proteins (HSPs) play crucial roles in cellular protection and homeostasis.
- Age-related decline in cellular functions is a hallmark of aging.
- Peripheral blood mononuclear cells (PBMCs) are key immune cells affected by aging.
Purpose of the Study:
- To investigate the age-related changes in heat shock 70 kDa protein (hsp 70) gene transcription in PBMCs.
- To determine if aging impacts the cellular response to heat shock stress.
Main Methods:
- Quantification of hsp 70 gene transcription levels in PBMCs from young and aged subjects.
- Comparison of maximum transcription levels under heat shock conditions.
Main Results:
- A significant age-related retardation in hsp 70 gene transcription was observed in PBMCs.
- Aged subjects showed decreased maximum hsp 70 gene transcription compared to young controls.
- This suggests a diminished capacity for heat shock response in aged PBMCs.
Conclusions:
- Aging is associated with reduced hsp 70 gene transcription in PBMCs.
- The impaired hsp 70 response may compromise the ability of aged PBMCs to maintain homeostasis under stress.
- These findings highlight a potential age-related functional decline in essential PBMC functions.
Abstract:
In this study, we show the age-related retardation of heat shock 70 kD protein (hsp 70) gene transcription in peripheral blood mononuclear cells (PBMC). The amount of maximum transcription of the hsp 70 gene is decreased in PBMC from aged subjects, compared with PBMC from young control subjects. It might mean that the ability for homeostasis against heat shock stress decreases in PBMC from aged subjects. Our observation might be at least correlative and consistent with the age-related change of a possible essential function in PBMC.