European Union
Regulator: Not represented
not_approved
As of: 9/9/2026 · Temporal status not established
Regulatory context incomplete: regulator.
Scientific intelligence record
Experience 2.0
Melanocortin peptide analog
Synthetic cyclic melanocortin-receptor agonist studied for pigmentation and other effects.
Record status
Traceability partial
Last meaningful update: 9/9/2026
Governed reviewed evidence
25
Governed records, not an efficacy score or total literature count.
Evidence boundary
0 / 25
Claim-linked support versus recorded evidence.
Research gaps
1
Unresolved questions remain visible.
Human experience
Below display gate
Observations never become clinical evidence.
Human experience · separate evidence stream
Eligible observations remain below the privacy and reliability threshold. WPF will not convert a handful of reports into a percentage, trend, or clinical claim.
Observation is valuable human context. It is not evidence of causation, efficacy, or safety.
Public display gate
n ≥ 20 eligible observations
Exact progress remains private before the threshold.
Intelligence snapshot
A compact view of what is represented, what remains unresolved, and how completely the record can be traced.
Governed reviewed evidence
25
Reviewed database records promoted through the governed publication workflow.
Contradictions
0
Conflicting evidence relationships that remain visible.
Research gaps
1
Questions the current record identifies as unresolved.
Connected media
0
Media records explicitly linked to this scientific record.
What we know
The project separates represented evidence from qualification, contradiction, uncertainty, and what the evidence does not establish.
This does not mean the scientific literature contains no findings. It means no reviewed institutional claim has been represented here.
Scientific context
Existing reviewed chemistry is preserved as scientific context. Chemistry and mechanism information do not establish clinical efficacy or safety.
Chemical identity describes the recorded molecular information. It does not establish biological activity, clinical efficacy, safety, or therapeutic suitability.
Explore further
Move from this peptide record into the project's broader evidence, research, comparison, and methodology systems.
Research
Chronology, unresolved research questions, opportunities, and researcher activity remain descriptive rather than evaluative.
1984 · study · Temporal status not established
Gene
1984 · study · Temporal status not established
Molecular and cellular biology
1995 · study · Temporal status not established
Journal of neurochemistry
1999 · study · Temporal status not established
Peptides
2000 · study · Temporal status not established
Connections
Connections appear only when they are represented by the project’s underlying records.
institution
institution
institution
institution
Traceability
The experience makes incomplete links visible instead of presenting a false impression of perfect provenance.
Source publication state
A governed source may be verified and approved for publication while its claim-to-evidence link is still incomplete.
Reviewer provenance state
“Human scientist reviewed: no” means that specific source-path attribution is not recorded. It does not silently negate the separate publication-review state.
Claim → Evidence
Incomplete
Evidence → Source
Connected
Source → Original record
Connected
Traceability documents how the project connects statements to records. It does not establish that a source is scientifically valid or that a claim is clinically true.
Incomplete links: claim-to-evidence
Exercise-induced metallothionein expression in human skeletal muscle fibres.
Observational archive
Observational archive data is intentionally separated from published scientific evidence.
Observational boundary
Insufficient eligible observations are available for display under the current filters.
Insufficient eligible observations are currently represented to display aggregated findings for this peptide.
Regulatory context
Regulatory status is jurisdiction-specific and time-dependent. It is presented as context, not as a recommendation for use or a substitute for scientific evidence evaluation.
European Union
Regulator: Not represented
As of: 9/9/2026 · Temporal status not established
Regulatory context incomplete: regulator.
United States
Regulator: Not represented
As of: 9/9/2026 · Temporal status not established
Regulatory context incomplete: regulator.
Research + media
Only media explicitly linked through the project’s relationship system appears here.
No scientifically connected media is currently represented for this peptide.
Sources + provenance
Melanotan II evidence · ranking key
A tier describes the evidentiary role and design strength of a source. It is not a popularity score, proof that every conclusion is correct, or a substitute for claim-level review.
Large, well-conducted randomized trials; prespecified major outcomes; rigorous systematic reviews or meta-analyses; and major regulatory assessments.
Smaller randomized trials, strong prospective cohorts, prespecified secondary analyses, and high-quality comparative-effectiveness studies.
Retrospective cohorts, claims-database studies, pharmacovigilance analyses, mechanistic human research, and well-documented case series.
Case reports, conference abstracts, preclinical research, hypothesis-generating analyses, and expert commentary.
Tier classifies source design and evidentiary role. Confidence reflects risk of bias, sample size, comparator quality, outcome relevance, follow-up, missing data, directness, replication, reporting quality, and whether conclusions stay within the measured results.
peptide explorer
Evidence-class labeling remains visible even when interactive rendering is unavailable. Representative geometry is not an experimentally determined or predicted biological conformation.
Fully specified molecular identity
Complete cyclic 2D identity; the schematic does not depict the lactam ring as a physical conformer.
Sources: NIH PubChem — Melanotan II · reviewed 2026-09-17
Governed scientific evidence
Duplicate-safe scientific sources under accountable human review. Identified or pending records do not contribute as approved evidence.
Audit view
Human and preclinical evidence remain separate. Source identity, claim-to-source traceability, review dates, conflicts, limitations, and unknowns stay visible rather than being collapsed into one score.
PubMed-indexed clinical trial; journal article; research support, non-u.s. gov't; retracted publication examining exercise-induced metallothionein expression in human skeletal muscle fibres. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article; review examining metallothionein in brain disorders. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article; research support, non-u.s. gov't examining expression of metallothionein-i and ii in skin ageing and its association with skin proliferation. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article; research support, n.i.h., extramural examining 1,4-disubstituted-[1,2,3]triazolyl-containing analogues of mt-ii: design, synthesis, conformational analysis, and biological activity. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article; research support, non-u.s. gov't examining characterization of metallothioneins (mt-i and mt-ii) in the yak. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article examining pkc-α is involved in the signaling of phagocytosis induced by two snake venom secretory pla2s in macrophages. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article; research support, n.i.h., extramural; research support, non-u.s. gov't examining the role of mt in neurological disorders. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article; research support, n.i.h., extramural examining the effects of the melanocortin agonist (mt-ii) on subcutaneous and visceral adipose tissue in rodents. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article; research support, u.s. gov't, p.h.s. examining expression of metallothionein isoforms in human chorioretinal complex. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article examining evidence for oligomerization of metallothioneins in their functional state. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article examining structure-function studies on the cyclic peptide mt-ii, lactam derivative of alpha-melanotropin. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article; research support, non-u.s. gov't; research support, u.s. gov't, p.h.s. examining mt-ii induces penile erection via brain and spinal mechanisms. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article; research support, non-u.s. gov't examining human metallothionein mt-i and mt-ii processed genes. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article examining development of ligand-drug conjugates targeting melanoma through the overexpressed melanocortin 1 receptor. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article; research support, u.s. gov't, p.h.s.; review examining regulation of metallothionein gene expression. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed case reports; journal article; review examining melanotan ii: a possible cause of renal infarction: review of the literature and case report. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed case reports; journal article examining barbie drug identification: not a child's play. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article; research support, non-u.s. gov't examining development of high-fat-diet-induced obesity in female metallothionein-null mice. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed comparative study; journal article examining attenuation of cadmium-induced testicular injury in metallothionein-iii null mice. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article; research support, n.i.h., extramural; research support, non-u.s. gov't examining sites and sources of sympathoexcitation in obese male rats: role of brain insulin. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article examining cytoprotection by metallothionein against gastroduodenal mucosal injury caused by ethanol in mice. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article examining radiation exposure does not alter metallothionein iii isoform expression in mouse brain. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article; research support, u.s. gov't, non-p.h.s.; research support, u.s. gov't, p.h.s. examining metallothionein induction in neonatal rat primary astrocyte cultures protects against methylmercury cytotoxicity. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed comparative study; journal article; research support, u.s. gov't, p.h.s. examining regulation, linkage, and sequence of mouse metallothionein i and ii genes. Machine-staged source candidate; findings and limitations require accountable review before publication.
PubMed-indexed journal article; research support, n.i.h., extramural examining metallothioneins regulate atp7a trafficking and control cell viability during copper deficiency and excess. Machine-staged source candidate; findings and limitations require accountable review before publication.
Laboratory investigation; a journal of technical methods and pathology
2000 · study · Temporal status not established
Biological trace element research
2001 · study · Temporal status not established
Progress in nucleic acid research and molecular biology
2002 · study · Temporal status not established
Current eye research
2002 · study · Temporal status not established
Journal of chromatography. A
2003 · study · Temporal status not established
Annals of the New York Academy of Sciences
2005 · study · Temporal status not established
Experimental physiology
2005 · study · Temporal status not established
Journal of Alzheimer's disease : JAD
2007 · study · Temporal status not established
Journal of animal science
2007 · study · Temporal status not established
The Journal of pharmacology and experimental therapeutics
2010 · study · Temporal status not established
FASEB journal : official publication of the Federation of American Societies for Experimental Biology
2010 · study · Temporal status not established
Life sciences
2011 · study · Temporal status not established
The British journal of dermatology
2014 · study · Temporal status not established
Journal of medicinal chemistry
2017 · study · Temporal status not established
Oxidative medicine and cellular longevity
2020 · study · Temporal status not established
ACS pharmacology & translational science
2020 · study · Temporal status not established
CEN case reports
2020 · study · Temporal status not established
American journal of physiology. Regulatory, integrative and comparative physiology
2020 · study · Temporal status not established
Scientific reports
2024 · study · Temporal status not established
Toxicon : official journal of the International Society on Toxinology
2024 · study · Temporal status not established
Journal of forensic sciences
2026 · regulatory · Temporal status not established
European Union
2026 · regulatory · Temporal status not established
United States
The represented chronology reflects records currently included in the governed dataset and does not claim to represent the entire scientific literature.
No institutional claim record is currently represented for this peptide.
Evidence is missing or not represented as studied; this is not a conclusion that the intervention does not work.
These are bibliographic author identities derived from represented records. Name strings are not proof of unique real-world researcher identity, and publishing organizations are not treated as institutional affiliations.
2 represented evidence records
Years represented: 2003, 2020
Publishing organizations appearing in records: ACS pharmacology & translational science, Annals of the New York Academy of Sciences
1 represented evidence record
Years represented: 2000
Publishing organizations appearing in records: Laboratory investigation; a journal of technical methods and pathology
1 represented evidence record
Years represented: 2005
Publishing organizations appearing in records: Journal of Alzheimer's disease : JAD
1 represented evidence record
Years represented: 2010
Publishing organizations appearing in records: Life sciences
1 represented evidence record
Years represented: 2010
Publishing organizations appearing in records: Life sciences
1 represented evidence record
Years represented: 2014
Publishing organizations appearing in records: Journal of medicinal chemistry
1 represented evidence record
Years represented: 2014
Publishing organizations appearing in records: Journal of medicinal chemistry
1 represented evidence record
Years represented: 2014
Publishing organizations appearing in records: Journal of medicinal chemistry
1 represented evidence record
Years represented: 2007
Publishing organizations appearing in records: The Journal of pharmacology and experimental therapeutics
1 represented evidence record
Years represented: 1999
Publishing organizations appearing in records: Peptides
1 represented evidence record
Years represented: 1984
Publishing organizations appearing in records: Molecular and cellular biology
1 represented evidence record
Years represented: 2007
Publishing organizations appearing in records: Journal of animal science
institution
institution
institution
institution
institution
institution
institution
institution
Claim: Not linked · Evidence: e85d90f3-19f1-55ac-999e-f8e4a2b80898
PMID: 15640275 · DOI: 10.1113/expphysiol.2004.029371
Extraction: not-recorded · Review: verified · Source state: unknown
Machine extracted: no · Human scientist reviewed: no · Externally validated: no
Incomplete path: claim, extraction-status
Metallothionein in Brain Disorders.
Claim: Not linked · Evidence: 49450f60-92a9-51b3-bd23-4be11afd4396
PMID: 29085556 · DOI: 10.1016/j.jocn.2016.12.016
Extraction: not-recorded · Review: verified · Source state: unknown
Machine extracted: no · Human scientist reviewed: no · Externally validated: no
Incomplete path: claim, extraction-status
Expression of metallothionein-I and II in skin ageing and its association with skin proliferation.
Claim: Not linked · Evidence: 073bd748-af93-5b15-ba69-e659619c9096
PMID: 21054334 · DOI: 10.1111/j.1365-2133.2010.10117.x
Extraction: not-recorded · Review: verified · Source state: unknown
Machine extracted: no · Human scientist reviewed: no · Externally validated: no
Incomplete path: claim, extraction-status
1,4-disubstituted-[1,2,3]triazolyl-containing analogues of MT-II: design, synthesis, conformational analysis, and biological activity.
Claim: Not linked · Evidence: 1db74744-fd95-5b4d-b8b8-c215aa013f8d
PMID: 25347033 · DOI: 10.1021/jm501027w
Extraction: not-recorded · Review: verified · Source state: unknown
Machine extracted: no · Human scientist reviewed: no · Externally validated: no
Incomplete path: claim, extraction-status
Characterization of metallothioneins (MT-I and MT-II) in the yak.
Claim: Not linked · Evidence: bc6811db-7694-507e-aa60-99e7a31701a6
PMID: 17121968 · DOI: 10.2527/jas.2006-291
Extraction: not-recorded · Review: verified · Source state: unknown
Machine extracted: no · Human scientist reviewed: no · Externally validated: no
Incomplete path: claim, extraction-status
PKC-α is involved in the signaling of phagocytosis induced by two snake venom secretory PLA2S in macrophages.
Claim: Not linked · Evidence: 125398f7-af07-5047-8b6b-b27d9d4a997b
PMID: 38908525 · DOI: 10.1016/j.toxicon.2024.107824
Extraction: not-recorded · Review: verified · Source state: unknown
Machine extracted: no · Human scientist reviewed: no · Externally validated: no
Incomplete path: claim, extraction-status
The role of MT in neurological disorders.
Claim: Not linked · Evidence: 55743814-75ad-5770-9c60-2a007eef12ad
PMID: 16308482 · DOI: 10.3233/jad-2005-8206
Extraction: not-recorded · Review: verified · Source state: unknown
Machine extracted: no · Human scientist reviewed: no · Externally validated: no
Incomplete path: claim, extraction-status
The effects of the melanocortin agonist (MT-II) on subcutaneous and visceral adipose tissue in rodents.
Claim: Not linked · Evidence: 015673b4-5735-5aaf-8a22-7e153a1d1432
PMID: 17567964 · DOI: 10.1124/jpet.107.123091
Extraction: not-recorded · Review: verified · Source state: unknown
Machine extracted: no · Human scientist reviewed: no · Externally validated: no
Incomplete path: claim, extraction-status
Expression of metallothionein isoforms in human chorioretinal complex.
Claim: Not linked · Evidence: be4b3565-638a-564f-8871-d539173c23ad
PMID: 12187490 · DOI: 10.1076/ceyr.24.1.12.5426
Extraction: not-recorded · Review: verified · Source state: unknown
Machine extracted: no · Human scientist reviewed: no · Externally validated: no
Incomplete path: claim, extraction-status
Evidence for oligomerization of metallothioneins in their functional state.
Claim: Not linked · Evidence: 81909afd-3539-57c5-adbf-f6b4bc6e8f0c
PMID: 12498255 · DOI: 10.1016/s0021-9673(02)01259-1
Extraction: not-recorded · Review: verified · Source state: unknown
Machine extracted: no · Human scientist reviewed: no · Externally validated: no
Incomplete path: claim, extraction-status
Structure-function studies on the cyclic peptide MT-II, lactam derivative of alpha-melanotropin.
Claim: Not linked · Evidence: cb990202-dd38-5d2c-a28f-b04c7c5be17d
PMID: 10447101 · DOI: 10.1016/s0196-9781(99)00048-0
Extraction: not-recorded · Review: verified · Source state: unknown
Machine extracted: no · Human scientist reviewed: no · Externally validated: no
Incomplete path: claim, extraction-status
MT-II induces penile erection via brain and spinal mechanisms.
Claim: Not linked · Evidence: 15bf8026-3e12-584c-9bd9-40a4ce612016
PMID: 12851302 · DOI: 10.1111/j.1749-6632.2003.tb03166.x
Extraction: not-recorded · Review: verified · Source state: unknown
Machine extracted: no · Human scientist reviewed: no · Externally validated: no
Incomplete path: claim, extraction-status
Human metallothionein MT-I and MT-II processed genes.
Claim: Not linked · Evidence: fcb64e56-a845-56ac-8437-3bb2e8c5a612
PMID: 6526271 · DOI: 10.1016/0378-1119(84)90204-x
Extraction: not-recorded · Review: verified · Source state: unknown
Machine extracted: no · Human scientist reviewed: no · Externally validated: no
Incomplete path: claim, extraction-status
Development of Ligand-Drug Conjugates Targeting Melanoma through the Overexpressed Melanocortin 1 Receptor.
Claim: Not linked · Evidence: e41cbfa5-a456-5ee3-ad45-9785ba86d88b
PMID: 33073191 · DOI: 10.1021/acs.jmedchem.8b00488
Extraction: not-recorded · Review: verified · Source state: unknown
Machine extracted: no · Human scientist reviewed: no · Externally validated: no
Incomplete path: claim, extraction-status
Regulation of metallothionein gene expression.
Claim: Not linked · Evidence: 2d27475b-98e3-503a-9c17-f5a1672fd419
PMID: 11051769 · DOI: 10.1016/s0079-6603(00)66034-8
Extraction: not-recorded · Review: verified · Source state: unknown
Machine extracted: no · Human scientist reviewed: no · Externally validated: no
Incomplete path: claim, extraction-status
Melanotan II: a possible cause of renal infarction: review of the literature and case report.
Claim: Not linked · Evidence: 5be666d7-641e-5fe8-81a4-b9e4b16a6160
PMID: 31953620 · DOI: 10.1080/01926230601156237
Extraction: not-recorded · Review: verified · Source state: unknown
Machine extracted: no · Human scientist reviewed: no · Externally validated: no
Incomplete path: claim, extraction-status
Barbie drug identification: Not a child's play.
Claim: Not linked · Evidence: 9c733c29-0b71-50e3-8b1f-7ea9226180bc
PMID: 39302005 · DOI: 10.1111/1556-4029.15633
Extraction: not-recorded · Review: verified · Source state: unknown
Machine extracted: no · Human scientist reviewed: no · Externally validated: no
Incomplete path: claim, extraction-status
Development of high-fat-diet-induced obesity in female metallothionein-null mice.
Claim: Not linked · Evidence: 672709a8-3cfb-56b6-b3ca-94fc1f4adb65
PMID: 20219986 · DOI: 10.1096/fj.09-145466
Extraction: not-recorded · Review: verified · Source state: unknown
Machine extracted: no · Human scientist reviewed: no · Externally validated: no
Incomplete path: claim, extraction-status
Attenuation of cadmium-induced testicular injury in metallothionein-III null mice.
Claim: Not linked · Evidence: 6d7bff1e-3bbe-59b1-abd5-468151e8721b
PMID: 20851133 · DOI: 10.1016/j.lfs.2010.09.009
Extraction: not-recorded · Review: verified · Source state: unknown
Machine extracted: no · Human scientist reviewed: no · Externally validated: no
Incomplete path: claim, extraction-status
Sites and sources of sympathoexcitation in obese male rats: role of brain insulin.
Claim: Not linked · Evidence: cd4719ba-e281-5db5-a997-a871f7ce5207
PMID: 31967846 · DOI: 10.1124/jpet.112.194738
Extraction: not-recorded · Review: verified · Source state: unknown
Machine extracted: no · Human scientist reviewed: no · Externally validated: no
Incomplete path: claim, extraction-status
Cytoprotection by metallothionein against gastroduodenal mucosal injury caused by ethanol in mice.
Claim: Not linked · Evidence: 8a009ee0-1b46-5100-bbb8-aa269cf4b855
PMID: 10744072 · DOI: 10.1038/labinvest.3780041
Extraction: not-recorded · Review: verified · Source state: unknown
Machine extracted: no · Human scientist reviewed: no · Externally validated: no
Incomplete path: claim, extraction-status
Radiation exposure does not alter metallothionein III isoform expression in mouse brain.
Claim: Not linked · Evidence: c1ffe736-db44-5c20-8309-9d196ef7a420
PMID: 11049197 · DOI: 10.1385/BTER:74:1:23
Extraction: not-recorded · Review: verified · Source state: unknown
Machine extracted: no · Human scientist reviewed: no · Externally validated: no
Incomplete path: claim, extraction-status
Metallothionein induction in neonatal rat primary astrocyte cultures protects against methylmercury cytotoxicity.
Claim: Not linked · Evidence: 26f6e68f-f390-515e-abd8-eab7ac1f9ba3
PMID: 7561850 · DOI: 10.1046/j.1471-4159.1995.65041562.x
Extraction: not-recorded · Review: verified · Source state: unknown
Machine extracted: no · Human scientist reviewed: no · Externally validated: no
Incomplete path: claim, extraction-status
Regulation, linkage, and sequence of mouse metallothionein I and II genes.
Claim: Not linked · Evidence: 39de8819-be02-545e-a753-45c4f32180c1
PMID: 6095054 · DOI: 10.1128/mcb.4.7.1221-1230.1984
Extraction: not-recorded · Review: verified · Source state: unknown
Machine extracted: no · Human scientist reviewed: no · Externally validated: no
Incomplete path: claim, extraction-status
Metallothioneins regulate ATP7A trafficking and control cell viability during copper deficiency and excess.
Claim: Not linked · Evidence: 97128243-0d2b-5785-8bb7-c1d58b8302e0
PMID: 32398691 · DOI: 10.1073/pnas.1311749110
Extraction: not-recorded · Review: verified · Source state: unknown
Machine extracted: no · Human scientist reviewed: no · Externally validated: no
Incomplete path: claim, extraction-status
Generated: 9/18/2026, 3:04:55 PM
Funding and conflicts are disclosed and considered, but sponsorship never automatically changes a tier. Corrections, retractions, and expressions of concern override the original rating.
This is a representative, sequence-derived model ordered by residue position only. It is not the peptide's experimentally determined or predicted biological conformation, and it carries no claim about real bond angles, distances, secondary structure, binding sites, or activity.
Evidence searched through: Not recorded
Last accountable review: Not recorded
These are documentary and scientific-review signals, not conclusions of harm, ineffectiveness, safety, or absence of research.
This maturity index describes evidence-base development and governance. It is not a probability of efficacy, safety, truth, medical advice, or regulatory approval. Read the methodology.