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Quantitative Imaging of Lineage-specific Toll-like Receptor-mediated Signaling in Monocytes and Dendritic Cells from Small Samples of Human Blood

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Published on: April 16, 2012

Human lymphocyte repertoires in ageing.

Scott D Boyd¹, Yi Liu, Chen Wang

¹Department of Pathology, Stanford University, Stanford, CA, USA.

Current Opinion in Immunology

|September 3, 2013

Summary

Ageing impacts adaptive immunity by altering T and B cell receptor diversity. High-throughput sequencing reveals age-related changes in immune cell populations, crucial for understanding immune system decline.

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Area of Science:

Immunology
Gerontology
Genomics

Background:

Adaptive immunity declines with age, affecting T and B cell responses.
Changes in lymphocyte subpopulations and antigen receptor genes contribute to immune senescence.
Understanding these changes is vital for addressing age-related immune dysfunction.

Purpose of the Study:

To investigate age-related alterations in T and B cell receptor repertoires.
To explore the impact of ageing on immune cell populations and diversity.
To identify challenges in accurately measuring immune repertoire diversity in ageing humans.

Main Methods:

Utilizing high-throughput DNA sequencing (HTS) to analyze immunoglobulin and T cell receptor gene rearrangements.
Examining lymphocyte subpopulations and their receptor repertoires in human subjects.
Assessing repertoire diversity in the context of ageing and vaccination responses.

Main Results:

Demonstrated age-related alterations in receptor populations within human lymphocyte subsets.
Observed changes in immune cell repertoires in response to vaccination in older individuals.
Highlighted the experimental challenges in accurately measuring repertoire diversity.

Conclusions:

Ageing significantly impacts the diversity and composition of T and B cell receptor repertoires.
HTS is a powerful tool for studying immune system ageing.
Further research with larger cohorts and controlled factors is needed to fully understand immune ageing.