Regulatory T cell frequency

There are 11 papers on regulatory T cell frequency in aging research: 4 observational studies in people, 6 in animals, 1 review. The newest story, Oct 31, 2026: “Aging strains immune tolerance to red blood cells in mice”.

Biomarker

11 papers study it1 more mentions it3 findings

2 new papers in 30 daysSee all 12

“one of the few differences seen between the two groups was higher frequencies of regulatory T-cells in R”
Frequencies of peripheral immune cells in older adults following seasonal influenza vaccination with an adjuvanted vaccineVaccine2017doi:10.1016/j.vaccine.2017.06.082
  • Humans4
  • Animals6

Interventions

1

Nicotinamide

upin mice1

1 study
  1. Nicotinamide increases regulatory T cell frequency in an ITP murine model.

    “Supplementation with NAD+ precursor nicotinamide (NAM), but not nicotinamide mononucleotide (NMN), increased Treg frequency and ameliorated thrombocytopenia in an ITP murine model”

    Animalsin an ITP murine model

    Nicotinamide enhances Treg differentiation by promoting Foxp3 acetylation in immune thrombocytopenia

    British journal of haematology

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Associations

2

Lactobacillaceae

upin humans1

1 study
  1. Lactobacillaceae is associated with regulatory T cell frequency in humans (Senescent-INRs, ex vivo).

    “Lactobacillaceae family and metabolites (members of the butyrate family – i.e. α-ketobutyrate) were correlated with Treg frequencies in “Senescent-INRs” ex vivo”

    HumansSenescent-INRs, ex vivo

    Microbiome and Metabolome driven differentiation of TGF-β producing Tregs leads to Senescence and HIV latency

    bioRxiv (Cold Spring Harbor Laboratory)Preprint

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Fluad

upin humans1

1 study
  1. Fluad is associated with regulatory T cell frequency in humoral responders versus non-responders.

    “one of the few differences seen between the two groups was higher frequencies of regulatory T-cells in R”

    Human trialin humoral responders versus non-respondersperipheral blood

    Frequencies of peripheral immune cells in older adults following seasonal influenza vaccination with an adjuvanted vaccine

    Vaccine

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Latest

Nov 2025: 0Dec 2025: 0Jan 2026: 0Feb 2026: 0Mar 2026: 1Apr 2026: 0May 2026: 0Jun 2026: 0Jul 2026: 0Aug 2026: 0Sep 2026: 0Oct 2026: 23 papers in 12 months
British Journal of Haematology

Aging strains immune tolerance to red blood cells in mice

Experiments in a mouse model of autoimmune anemia found partly weakened immune restraint with aging and reduced suppression by regulatory immune cells from adult females.Experiments in a mouse model of autoimmune anemia found partly weakened immune restraint with aging and reduced suppression by regulatory immune cells from adult females.

Mouse studyImmune response
Investigative Ophthalmology & Visual Science

Aging is linked to immune shifts in mouse tear glands

An analysis of 47,537 cells from young and old male mice linked aging to altered immune balance in tear-producing glands.An analysis of 47,537 cells from young and old male mice linked aging to altered immune balance in tear-producing glands.

Mouse studyImmune response

See all 12