5-Amino-1MQ Research: Studies, NNMT Inhibition & What the Data Shows
Although online research communities group it with peptides, 5-Amino-1MQ is a cell-permeable small-molecule inhibitor. It targets Nicotinamide N-methyltransferase (NNMT), an enzyme heavily active in fat tissue that accelerates metabolic ageing by depleting cellular NAD+.
Mechanism of action
5-Amino-1MQ is not a peptide — it is 5-amino-1-methylquinolinium, a small, cell-permeable molecule. It is grouped with research peptides commercially, not chemically.
It selectively inhibits Nicotinamide N-methyltransferase (NNMT), the enzyme that methylates nicotinamide and thereby drains the salvage pathway feeding NAD+ production.
By blocking that conversion, published work reports a 1.2 to 1.6-fold increase in cellular NAD+, restoring substrate for sirtuin and mitochondrial signalling.
NNMT expression rises with age and is elevated in white adipose tissue, which is why the research base concentrates on adiposity, metabolic ageing and skeletal muscle.
The studies
Important context: **there are no published human clinical trials of 5-Amino-1MQ**. The entire body of literature is foundational cell-line (in vitro) and animal (in vivo) work. Every entry below should be read on that basis.
Foundational discovery
Pivotal discovery study (Neelakantan et al.)
Identifying a membrane-permeable small molecule capable of selectively inhibiting NNMT to treat diet-induced obesity.
Compound screening and characterisation · diet-induced obese mice · adipose mass, body weight, food intake and NAD+ measurement
- 1.2-1.6× increase
- Cellular NAD+
- Significantly reduced
- White adipose tissue
- Unchanged
- Food intake
- Identified 5-amino-1-methylquinolinium (5-Amino-1MQ) as a potent NNMT inhibitor.
- In diet-induced obese mice it produced a significant reduction in white adipose tissue mass and overall body weight without decreasing food intake and without observable toxicity.
- It blocked the conversion of nicotinamide, producing a 1.2 to 1.6-fold increase in cellular NAD+ — the mechanistic anchor for all later work.
Metabolic & microbiome
Microbiome interaction study (Neelakantan et al.)
How combining a reduced-calorie diet with NNMT inhibition affects weight loss and the gut microbiome.
Reduced-calorie diet with or without 5-Amino-1MQ · obese controls · whole-body adiposity plus 16S microbiome profiling
- Accelerated
- Adiposity reduction
- Distinct & beneficial
- Microbiome profile
- Akkermansia
- Notable genus
- Pairing a reduced-calorie diet with 5-Amino-1MQ promoted dramatic, accelerated whole-body adiposity reduction.
- The combination established a highly unique and beneficial gut microbiome profile, altering specific phyla including Akkermansia, compared with diet-only or obese control groups.
- This suggests the metabolic effect is not purely calorie-driven — the microbiome shift is an independent variable.
Ageing & muscle function
Aged skeletal muscle and physical performance (Yoon Lab / UTMB)
Whether structural NNMT inhibitors counteract age-related skeletal muscle degradation.
Aged rodent models · NNMT inhibitor treatment · muscle stem cell proliferation, grip strength and running capacity
- Enhanced
- Muscle stem cell proliferation
- Increased
- Grip strength
- Prolonged
- Daily running capacity
- NNMT expression increases naturally with age, and suppressing it counteracted muscle degradation in these models.
- Treatment enhanced muscle stem cell proliferation and increased physical grip strength.
- Treated animals also prolonged their daily running capacity — a functional rather than purely histological endpoint.
Pharmacokinetics
Plasma bioanalytical assay and PK evaluation
Developing a sensitive method to measure concentration, stability and absorption of 5-Amino-1MQ in plasma.
Liquid chromatography-tandem mass spectrometry (LC-MS/MS) assay development and validation · plasma stability and bioavailability assessment
- Validated LC-MS/MS
- Method
- Favourable
- Metabolic stability
- High
- Systemic bioavailability
- Successfully validated an LC-MS/MS assay capable of tracking 5-Amino-1MQ in plasma.
- Confirmed favourable metabolic stability and high systemic bioavailability.
- This verified its capacity to function as a viable oral agent in research settings rather than requiring structural modification — notable, since it is not injectable-dependent like true peptides.
Cellular mechanism
Adipocyte phenotype shifting & lipogenesis suppression
Mapping the immediate cellular cascade when adipocytes are treated directly with 5-Amino-1MQ.
3T3-L1 laboratory adipocytes · differentiation-inducing conditions · lipid droplet quantification and viability assays
- Directly suppressed
- Lipogenesis
- Drastically fewer
- Lipid droplets
- Unaltered
- Cell viability
- In 3T3-L1 fat cells, 5-Amino-1MQ directly suppressed lipogenesis — the creation of new fat.
- Cells accumulated drastically fewer lipid droplets under conditions that normally mandate fat accumulation.
- The cell lines shifted toward an active energy-expenditure phenotype without altering cell viability, indicating the effect is metabolic rather than cytotoxic.
Storage & handling
5-Amino-1MQ is supplied as a powder or capsule-grade material rather than a lyophilised peptide. Keep sealed containers cool, dry and protected from light.
If preparing solutions, use the solvent specified by your laboratory's standard operating procedure and confirm solubility before scaling; it is a small quinolinium salt, not a peptide, so peptide reconstitution conventions do not directly apply.
Store prepared solutions refrigerated and use within the stability window set by your lab's SOP.
All information on this page is provided for laboratory and educational reference only. Peptides Lab SA (PTY) Ltd supplies compounds strictly for in-vitro research use. Nothing here is medical advice, a dosing recommendation, or a claim of human safety or efficacy.