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Research Comparison

Cagrilintide vs MOTS-C

Cagrilintide and MOTS-C are studied in overlapping research areas, which is why they are frequently compared. This is a neutral side-by-side reference drawn from published preclinical literature and laboratory handling data.

Shared research areas:Metabolic
ClassLipidated 37-residue amylin analogue, Cys2–Cys7 disulfide, C-terminal prolinamideMitochondrial-derived peptide, 16 residues
Molecular weightNot specified2174.5 g/mol
CAS numberNot assigned / not specifiedNot assigned / not specified
Purity spec≥99%≥98%
Research areasMetabolicMetabolic, Cellular Longevity
Primary diluentBacteriostatic water (0.9% benzyl alcohol)Sterile or bacteriostatic water
Working windowCommonly worked with for 3–4 weeks at 2–8 °C.Commonly worked with for 2–3 weeks at 2–8 °C.
Lead degradation routeFibrillation — the failure mode specific to this molecular class, and the one its whole design addresses.Methionine oxidation to the sulfoxide (+16 Da), and MOTS-c carries methionine at the N-terminus and internally.
Freeze–thawAvoid freezing reconstituted material. For an amylin analogue the freeze–thaw concern is not only interfacial aggregation but nucleation of the fibril pathway the molecule was engineered to resist — and fibril formation, once seeded, does not reverse on rewarming.Aliquot on reconstitution. Each vial opening introduces oxygen that acts on two susceptible residue types at once.
Light sensitivityNo specific light requirement beyond normal practice.Protect from light throughout — tryptophan photo-oxidation applies here as it does to DSIP.

How they actually differ

Comparing the two: Cagrilintide is lipidated 37-residue amylin analogue, cys2–cys7 disulfide, c-terminal prolinamide, while MOTS-C is mitochondrial-derived peptide, 16 residues — different molecular classes with different handling consequences; they call for different primary diluents (bacteriostatic water (0.9% benzyl alcohol) versus sterile or bacteriostatic water); their leading degradation routes differ (fibrillation for Cagrilintide, methionine oxidation to the sulfoxide (+16 da), and mots-c carries methionine at the n-terminus and internally. for MOTS-C), so the storage precautions that matter are not the same; their practical working windows differ once reconstituted. The sections below set out each in full.

Cagrilintide — origin

Cagrilintide is an engineered analogue of human amylin (IAPP), the 37-residue hormone co-secreted with insulin from pancreatic beta cells. Its design problem was unusually specific: native amylin is strongly amyloidogenic, readily collapsing from helix into the beta-sheet conformation that seeds fibrils, which is what made a long-acting amylin drug difficult for decades. Cagrilintide carries six substitutions relative to human amylin (14E, 17R, 25P, 28P, 29P, 37P) — roughly 84% sequence homology — plus N-terminal acylation with a C20 fatty diacid through a gamma-glutamate linker.

MOTS-C — origin

MOTS-c is encoded not in nuclear DNA but within the mitochondrial genome — specifically an open reading frame inside the 12S ribosomal RNA gene. Its discovery helped establish that mitochondria encode short signalling peptides that act on the rest of the cell, a genuinely recent addition to cell biology and the reason the compound attracted rapid research interest.

Cagrilintide research themes

Amylin receptor pharmacology

Cagrilintide binds the calcitonin receptor and all three amylin receptors (AMY1, AMY2, AMY3), which is why the literature sometimes classes it as a dual amylin and calcitonin receptor agonist.

Amyloid-resistant peptide design

A worked example of engineering a fibril-prone hormone into a stable long-acting analogue — salt-bridge helix stabilisation plus beta-sheet-breaking prolines.

Protraction by acylation

The C20 diacid extends the half-life from minutes, for the short-acting analogue pramlintide, to roughly a week.

Combination with incretin agonists

The most-studied context: co-administration with semaglutide, investigated in the REDEFINE trial programme.

MOTS-C research themes

Mitochondrial-derived signalling

Part of a novel class demonstrating that mitochondria encode peptides acting systemically.

AMPK pathway

The most-studied signalling interaction, examined in metabolic and exercise models.

Insulin sensitivity

Investigated in glucose-metabolism research models.

Exercise and longevity biology

Studies have examined MOTS-c expression in relation to physical activity and ageing in animal models.

Cagrilintide handling

  • Never shake. Swirl gently and allow the cake to dissolve in its own time.
  • Do not freeze reconstituted solution.
  • Add diluent down the vial wall rather than directly onto the cake.
  • Treat visible particulate or a settling precipitate as a rejected vial — for an amylin analogue this is the observable end of the fibrillation pathway, not a cosmetic issue.

MOTS-C handling

  • Use amber vials or wrap in foil; treat light protection as mandatory rather than precautionary.
  • Minimise vial openings — headspace oxygen is the practical driver of oxidation.
  • Use low-bind labware for dilute working solutions.

Both third-party tested

Every Popular Peptides batch of Cagrilintide and MOTS-C is independently tested by HPLC and LC-MS with a published Certificate of Analysis. Enter a lot number to pull the COA for a specific vial.

Verify a batchPublished COAsHow we test

Cagrilintide reference

Full Cagrilintide reference Cagrilintide storage Cagrilintide reconstitution Cagrilintide calculatorCagrilintide product details

MOTS-C reference

Full MOTS-C reference MOTS-C storage MOTS-C reconstitution MOTS-C calculatorMOTS-C product details

Related comparisons

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Cagrilintide and MOTS-C are supplied strictly as research chemicals for in-vitro laboratory and research use only. They are not intended for human or animal consumption, diagnostic, or therapeutic use. This comparison summarizes published preclinical literature and laboratory handling data; it is not medical advice, not a claim of efficacy, and not usage guidance.