Serotonin

  • 4 independent labs in 3 countries
  • 3 trials, none about aging, 2 with no results posted
  • Funders: National Natural Science Foundation of China and others
  • Animals3
  • Model organisms2

Outcomes

5

ER unfolded protein response

downin mice1

1 study
  1. Serotonin decreases ER unfolded protein response in mice.

    “serotonin promotes serotonylation of HSP90β, which effectively reduces endoplasmic reticulum stress”

    Animals

    The oocyte-enriched metabolite serotonin alleviates cellular senescence and aging phenotypes in the mouse

    The EMBO journal16 Jun 2026

More on ER unfolded protein response

Cellular senescence

downin mice1

1 study
  1. Serotonin decreases cellular senescence in mice.

    “serotonin alleviates cellular senescence and aging phenotypes in the mouse”

    Animals

    The oocyte-enriched metabolite serotonin alleviates cellular senescence and aging phenotypes in the mouse

    The EMBO journal16 Jun 2026

More on Cellular senescence

Germline progenitor cells

upin worms1

1 study
  1. Serotonin increases germline progenitor cells in worms.

    “An adult-specific serotonin signal acts upstream of DAF-7 to increase the population of germline progenitors, but only in actively egg-laying worms.”

    Model organismsin actively egg-laying wormsgermlinefemales

    The roles of TGFβ and serotonin signaling in regulation of germline progenitors in adult C. elegans hermaphrodites revealed by the effects of a male pheromone

    Developmental biology13 Mar 2026

flr-2

upin worms1

1 study
  1. Serotonin increases flr-2 in worms.

    “5-HT activates its receptor, MOD-1, in the post-synaptic interneurons that then secretes the neuropeptide FLR-2.”

    Model organismsvia MOD-1 in post-synaptic interneurons

    Methionine cycle in a pair of serotonergic neurons regulates diet-dependent behavior and longevity through a neuron-gut signaling

    bioRxiv (Cold Spring Harbor Laboratory)2 Mar 2024Preprint

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Distal colitis

upin mice1

1 study
  1. Serotonin increases distal colitis in mice.

    “distal colitis was more sensitive to 5-HT treatment”

    Animalsdistal colitis in a mouse colitis model

    Age-, sex- and proximal-distal-resolved multi-omics identifies regulators of intestinal aging in non-human primates

    Nature aging6 Feb 2024

More on Distal colitis

Associations

1

Mitochondrial function

mixedin mice1

1 study
  1. Serotonin is associated with mitochondrial function in mice.

    “serotonin acts via its receptor 5HTR1B to modulate mitochondrial function”

    Animalsvia its receptor 5HTR1B

    The oocyte-enriched metabolite serotonin alleviates cellular senescence and aging phenotypes in the mouse

    The EMBO journal16 Jun 2026

Trials

0 about aging, of 3

In trials

Trial sponsors

Funding

1 grant since 2023

National Institute of Arthritis and Musculoskeletal and Skin DiseasesUS$2.1m

Latest

Nov 2025: 3Dec 2025: 9Jan 2026: 3Feb 2026: 2Mar 2026: 4Apr 2026: 0May 2026: 0Jun 2026: 6Jul 2026: 4Aug 2026: 10Sep 2026: 10Oct 2026: 455 in 12 months
The Journal of Pharmacology and Experimental Therapeutics

TRPM3 inhibition reverses depressive behaviors in rats

In ovariectomized rats, inhibiting TRPM3 with naringenin restored serotonin signaling and dendritic arborization while reducing neuroinflammation and depressive-like…In ovariectomized rats, inhibiting TRPM3 with naringenin restored serotonin signaling and dendritic arborization while reducing neuroinflammation and depressive-like deficits.

Experiments in ratsMechanisms
bioRxiv

Normative brain models reveal dopamine shifts in early amyloid

In cognitively unimpaired older adults, intermediate amyloid burden showed lower dopamine-transporter deviation scores than amyloid-positive status, with an adjusted…In cognitively unimpaired older adults, intermediate amyloid burden showed lower dopamine-transporter deviation scores than amyloid-positive status, with an adjusted difference of −0.582.

Preprint: cohort study of 4,152 peopleBiomarkers