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Phenotypic and Functional Analysis of Activated Regulatory T Cells Isolated from Chronic Lymphocytic Choriomeningitis Virus-infected Mice

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Brain-specific regulatory T cell expansion limits cognitive decline.

Maria Llorián-Salvador¹, Alerie G de la Fuente²

¹Vall d'Hebron Research Institute (VHIR). Universitat Autónoma de Barcelona, Barcelona, 08035, Spain.

Trends in Molecular Medicine

|May 22, 2023

Summary

This summary is machine-generated.

Researchers expanded regulatory T cells (Treg) in aged mice using gene delivery. This approach reversed brain aging markers and prevented cognitive decline, suggesting immune modulation can protect brain function.

Keywords:

ageing cognitive decline gene delivery glial reprogramming regulatory T cells

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Area of Science:

Neuroscience
Immunology
Aging Research

Background:

Aging is associated with cognitive decline and changes in brain cell function.
Regulatory T cells (Treg) play a crucial role in immune homeostasis.
Modulating the immune system may offer therapeutic strategies for age-related cognitive impairment.

Purpose of the Study:

To investigate the potential of expanding regulatory T cells (Treg) within the central nervous system (CNS) to counteract aging-related cognitive decline.
To determine if CNS-specific Treg expansion can reverse transcriptomic alterations in glial cells associated with aging.

Main Methods:

Utilized a central nervous system (CNS)-specific gene delivery system in aged mice.
Expanded regulatory T cells (Treg) within the CNS.
Analyzed transcriptomic changes in glial cells.
Assessed cognitive function in treated aged mice.

Main Results:

CNS-restricted Treg expansion was successfully achieved in aged mice.
This expansion reversed age-related transcriptomic changes in glial cells.
Cognitive decline associated with aging was prevented in the treated mice.

Conclusions:

Immune modulation via CNS-specific Treg expansion is a viable strategy to protect cognitive function during aging.
Targeting glial cell transcriptomic changes through immune intervention can ameliorate age-related cognitive deficits.
This study highlights the potential of neuro-immunomodulation for healthy brain aging.