[Brain and Neuronal Aging: Aged Brain Controls via Gene Expression Fidelity and Master Regulatory Factors]

Area of Science:

• Neuroscience
• Aging Research
• Molecular Biology

Background:

• Age-related cognitive decline, including Alzheimer's and Parkinson's diseases, stems from neurodegeneration.
• Maintaining neuronal function throughout life depends on accurate cellular metabolism and protein synthesis.
• Protein quality control mechanisms, such as autophagy and proteasomes, are critical in aging.

Purpose of the Study:

• To review the role of repressor element-1 silencing transcription factor (REST) in brain aging.
• To explore the connection between REST/NRSF, neuroprotection, and aging.
• To discuss the potential of NRSF/REST as a pharmaceutical target for managing brain aging.

Main Methods:

• Literature review summarizing current research on REST/NRSF and brain aging.
• Analysis of the role of protein synthesis fidelity and proteostasis in neurodegeneration.
• Examination of REST's function in protecting neurons against age-related stressors.

Main Results:

• REST is upregulated in the aged brain and confers neuroprotection against oxidative stress and protein toxicity.
• REST, identical to neuron-restrictive silencer factor (NRSF), is a master regulator involved in both neurogenesis and neurodegeneration.
• Evidence suggests impaired protein synthesis accuracy and proteostasis contribute to neurodegeneration.

Conclusions:

• NRSF/REST plays a crucial role in orchestrating neural protection during human brain aging.
• Targeting NRSF/REST presents a promising pharmaceutical strategy for controlling brain aging.
• Understanding NRSF/REST's dual role in neurogenesis and neurodegeneration is key for therapeutic development.