TL;DR
Research methodology for characterizing PT-141 at MC3R and MC4R receptors and downstream signaling in cell line and tissue studies.
Research use only. This guide summarizes published research methodology for educational purposes. All Aureum Peptides products are sold strictly for in-vitro laboratory research.
Receptor Binding Assays
HEK293 or CHO cells stably transfected with human MC3R or MC4R — competition binding assays using radiolabeled NDP-alpha-MSH tracer with PT-141 displacement. Ki values typically in low-nM range for both targets.
cAMP Functional Assays
cAMP accumulation assays (HTRF, ELISA) in MC3R/MC4R-expressing cells. Dose-response curves generate EC50 values for functional potency comparison against reference melanocortin compounds.
Selectivity Profiling
PT-141’s research value derives partly from MC3R/MC4R selectivity with minimal MC1R binding. Binding and functional assays across the MC1-MC5 receptor family establish full pharmacological profile.
CNS Autonomic Research Models
Rodent telemetry for cardiovascular parameters (heart rate, blood pressure) and thermoregulation following PT-141 administration. Central vs peripheral effects distinguished by ICV vs systemic routes.
Downstream Signaling
Beyond cAMP, PT-141 research examines MAPK pathway activation (ERK1/2 phosphorylation), β-arrestin recruitment (BRET assays), and receptor internalization kinetics for bias characterization.
Research-Grade Material from Aureum
Aureum Peptides provides research-grade peptides with ≥99% HPLC-verified purity and batch-specific Certificate of Analysis. Same-day dispatch on qualified orders placed before 2:00 PM EST.
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Disclaimer: Educational content for qualified researchers. Not research information. No therapeutic claims. Peptides not approved by FDA for human use. For in-vitro laboratory research purposes only.
Last reviewed: 2026-04-21
