Coskun and colleagues in Cell Metabolism: where the molecule came from

Published 24 October 2026 · REVIVE LAB UAE Research Desk · 5 min read
Coskun and colleagues described LY3437943 in Cell Metabolism in 2022 as a single peptide engineered to act at the GIP, GLP-1 and glucagon receptors, reporting its in vitro receptor activity, its effects in rodent and non-human primate models, and early human data. It is the primary source for the molecule's design.

How the molecule was built

The peptide was engineered from a GIP-based backbone with substitutions that introduced activity at the GLP-1 and glucagon receptors, and carried a fatty-acid side chain to extend its circulating half-life through albumin binding.

The paper reports receptor potency at each of the three targets separately. The result is deliberately unbalanced — potency at the GLP-1 receptor is lower relative to the native hormone than at the other two — which the authors present as a design choice rather than a limitation.

What was measured before people

In diet-induced obese mice the compound reduced body weight and food intake and increased energy expenditure, with the glucagon component implicated in the latter. Non-human primate work characterised pharmacokinetics and tolerability.

These are the standard preclinical stages, and they are the evidence on which the first human study was permitted.

Why this paper matters to a researcher

It is where the receptor-level characterisation lives. A page describing retatrutide as "a triple agonist" is summarising this paper; the paper itself states the potencies, the assays and the animal models, which is the information a laboratory needs.

It is also the source for the fatty-acid modification and the pharmacokinetic rationale that the later trials rest on.

Supply

Retatrutide is supplied by REVIVE LAB UAE as an investigational research material for laboratory use only, with identity by mass spectrometry and purity by HPLC for the batch. It is not approved for any use anywhere, and no dosing, administration or protocol guidance is provided.

What it costs

FormatStrengthPriceAvailability
Retatrutide Pack20 mgAED 1010In stock

Delivery is AED 40 flat and free on orders over AED 700. Payment is cash on delivery anywhere in the UAE, or USDT (TRC20) in advance, which takes 5% off the order total.

Frequently asked

How the molecule was built?

The peptide was engineered from a GIP-based backbone with substitutions that introduced activity at the GLP-1 and glucagon receptors, and carried a fatty-acid side chain to extend its circulating half-life through albumin binding.

Does REVIVE LAB UAE provide dosing guidance?

No. REVIVE LAB UAE supplies research materials and provides no dosing, administration or protocol guidance of any kind. Every product is sold for laboratory research use only and is not for human or veterinary consumption.

How fast is delivery in the UAE?

Stock is held in Dubai. An order confirmed before 4 PM Dubai time is dispatched the same working day, reaching Dubai and Abu Dhabi the same day and the remaining emirates within 24 hours. Delivery is AED 40 flat and free over AED 700.

Retatrutide Pack — in stock, dispatched from Dubai
HPLC-verified, lot certificate on every carton, 24-hour delivery nationwide. Browse the catalogue → All peptides UAE

Related reading

Supplied for laboratory research use only. Not for human or veterinary consumption. REVIVE LAB UAE provides no dosing, administration or protocol guidance.