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Compounds / P21

P21

Full name
P21 (Cintirorgon-class; ciliary-neurotrophic-factor-mimetic peptide)
Mechanism
Synthetic peptidomimetic designed to mimic ciliary neurotrophic factor (CNTF) activity, reported preclinically to promote neurogenesis and reduce tau hyperphosphorylation.
Half-life
not characterised in humans
Administration
subcutaneous (research), intranasal (research)
Typical dosage*
low: research-defined · typical: no established human dose · high: unknown
Researched for
neurogenesis / neurodegeneration research (preclinical)
Reported side effects
no human safety data
Interactions
not characterised
Commonly combined
research peptide; no protocols
Scheduling
🇦🇺 AUNot ARTG-registered; research
🇺🇸 USNot FDA-approved
🇬🇧 UKNot licensed
Regulatory status
Preclinical research peptide. No human data. Not approved.

*Doses are commonly-reported figures from public sources, not a recommendation. Educational only.

8studies
9faqs
nootropicneurogenicresearch-chemical

Studies (8)

YearTitle / venueSource
2023The development of peptide- and oligonucleotide-based drugs to prevent the formation of abnormal tau in tauopathies
Expert opinion on drug discovery · preclinical
PMID 37042028
2022Alzheimer's Disease: Challenges and a Therapeutic Opportunity to Treat It with a Neurotrophic Compound
Biomolecules · preclinical
PMID 36291618
2020Prenatal to early postnatal neurotrophic treatment prevents Alzheimer-like behavior and pathology in mice
Alzheimer's research & therapy · preclinical
PMID 32854771
2017Prevention of dendritic and synaptic deficits and cognitive impairment with a neurotrophic compound
Alzheimer's research & therapy · preclinical
PMID 28655344
2016Neurotrophic factor small-molecule mimetics mediated neuroregeneration and synaptic repair: emerging therapeutic modality for Alzheimer's disease
Molecular neurodegeneration · preclinical
PMID 27400746
2015Elevated Tau Level in Aged Rat Cerebrospinal Fluid Reduced by Treatment with a Neurotrophic Compound
Journal of Alzheimer's disease : JAD · preclinical
PMID 26401692
2014Disease modifying effect of chronic oral treatment with a neurotrophic peptidergic compound in a triple transgenic mouse model of Alzheimer's disease
Neurobiology of disease · preclinical
PMID 25046994
2014Rescue of cognitive-aging by administration of a neurogenic and/or neurotrophic compound
Neurobiology of aging · preclinical
PMID 24702821

Questions (9)

What is P21?

P21 (P21 (Cintirorgon-class; ciliary-neurotrophic-factor-mimetic peptide)). Synthetic peptidomimetic designed to mimic ciliary neurotrophic factor (CNTF) activity, reported preclinically to promote neurogenesis and reduce tau hyperphosphorylation.

What is P21 used for?

Commonly discussed uses: neurogenesis / neurodegeneration research (preclinical). The evidence base is largely preclinical (animal/in-vitro); published randomised human clinical trials are lacking or absent. Note: most uses are not approved indications.

How does P21 work?

Mechanism: Synthetic peptidomimetic designed to mimic ciliary neurotrophic factor (CNTF) activity, reported preclinically to promote neurogenesis and reduce tau hyperphosphorylation.

Is P21 safe?

Reported considerations: no human safety data. The evidence base is largely preclinical (animal/in-vitro); published randomised human clinical trials are lacking or absent. Preclinical research peptide. No human data. Not approved. This is not a safety endorsement; safety data for unapproved compounds is incomplete.

What is the typical dose of P21?

Commonly cited ranges (educational reference, not a recommendation): low research-defined, typical no established human dose, high unknown. Administration: subcutaneous (research), intranasal (research). Half-life: not characterised in humans.

Is P21 legal in Australia?

Australian status: Not ARTG-registered; research. Preclinical research peptide. No human data. Not approved. General regulatory context: most active peptides are Schedule 4 and require a prescription; import via the Personal Importation Scheme requires a valid Australian prescription for prescription-only goods.

How do you store P21?

Reconstitution/storage reference: research-defined; storage: frozen aliquots.

What is P21 commonly stacked with?

Commonly discussed combinations (anecdotal for unapproved compounds): research peptide; no protocols. Stacking increases interaction/safety uncertainty.