Selank Peptide Research: Tuftsin Analog, GABA and BDNF Studies

Selank peptide research — tuftsin-derived heptapeptide laboratory study

Selank peptide research starts with an unusual origin story. Most research peptides begin as fragments of a hormone or growth factor. Selank begins as a fragment of an antibody. It is a synthetic, stabilized analog of tuftsin — a naturally occurring immune peptide — engineered in Russia to survive long enough in biological systems to […]

Retatrutide Peptide Research: The Triple Agonist, TRIUMPH Trials and FDA Status

Retatrutide peptide research — triple agonist laboratory study

Retatrutide Peptide Research: The Triple Agonist, TRIUMPH Trials and FDA Status Retatrutide peptide research is where incretin science stopped adding one receptor at a time. Retatrutide (development code LY3437943, Eli Lilly) is a single synthetic peptide engineered to activate three metabolic receptors at once — GIP, GLP-1 and glucagon — and its Phase 2 and […]

Sermorelin Peptide Research: GHRH(1-29), GH Pulses and FDA History

Sermorelin peptide research — GHRH(1-29) laboratory study

Sermorelin Peptide Research: GHRH(1-29), GH Pulses and FDA History Sermorelin peptide research occupies an unusual place in the peptide literature: this is one of the few research peptides that was once an FDA-approved prescription product. Sermorelin is a synthetic 29-amino-acid analogue of growth hormone-releasing hormone — GHRH(1-29) — the shortest fragment of the natural 44-amino-acid […]

Tirzepatide Peptide Research: Dual GIP/GLP-1 Mechanism, Trials and FDA Status

Tirzepatide peptide research — laboratory vial and peptide molecular model in a blue research lab

Tirzepatide peptide research is built around a question the incretin field argued about for two decades: what happens if one molecule activates both incretin receptors at once? Tirzepatide is a synthetic 39-amino-acid peptide engineered to agonize the glucose-dependent insulinotropic polypeptide (GIP) receptor and the glucagon-like peptide-1 (GLP-1) receptor simultaneously — the first dual agonist of […]

AOD-9604 Peptide Research: What the hGH Fragment Trials Actually Found

Researcher examining an AOD-9604 peptide vial in a blue and white laboratory with HPLC equipment and adipocyte imagery on a monitor

AOD-9604 peptide research starts with a clean engineering idea: can you keep only the fat-mobilizing tail of human growth hormone and leave the rest of the hormone behind? AOD-9604 is a synthetic 16-amino-acid fragment modeled on the C-terminal end of human growth hormone (hGH), developed in Australia in the 1990s as an anti-obesity drug candidate. […]

Epithalon Peptide Research: Telomerase and Telomere Studies

Epithalon research peptide laboratory vial with microscope and DNA helix — telomerase and telomere research

Epithalon peptide research is built around a fundamental question in cell biology: what happens when the protective caps on a cell’s chromosomes wear down? Epithalon — also spelled Epitalon — is a synthetic tetrapeptide of just four amino acids (Ala-Glu-Asp-Gly, abbreviated AEDG) reported in cell culture to switch telomerase back on in human somatic cells […]

KPV Peptide Research: The α-MSH Tripeptide, PepT1 and NF-κB Studies

Researcher in a laboratory examining a vial of KPV research peptide beside a microscope and cell culture plates

KPV peptide research starts with a deceptively simple question: how much of a hormone’s activity can survive in just three amino acids? KPV is the tripeptide lysine-proline-valine — the final three residues of alpha-melanocyte-stimulating hormone (α-MSH) — and in cell and animal models it retains a substantial share of its parent hormone’s anti-inflammatory signaling, without […]

Peptide Freeze-Thaw Cycles: What Repeated Freezing Does to Research Peptides

Researcher removing frosted peptide vials from a laboratory freezer for freeze-thaw storage research

Peptide freeze thaw cycles sound harmless — freeze a solution, thaw it, use it — yet they are one of the most common and least visible ways researchers degrade their own material before an experiment even starts. A vial can look identical after five cycles while its contents have quietly aggregated, oxidized, or shifted in […]

Semaglutide Peptide Research: GLP-1 Mechanism, Trials and FDA Status

Semaglutide peptide research — laboratory vial and GLP-1 molecular model in a blue and white research lab

Semaglutide Peptide Research: GLP-1 Mechanism, Trials and FDA Status Semaglutide peptide research is unusual in the peptide field because, unlike most research compounds, semaglutide has completed large Phase 3 programs and holds FDA approvals in separate prescription drug products. That history makes it a useful reference compound for laboratory work on GLP-1 receptor signaling, metabolic […]