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MONOGRAPH No. 059
EVIDENCE BASELimited
TYPE
Synthetic tetrapeptide bioregulator
SEQUENCE
Val-Glu-Pro-Asp
CAS
Not assigned
EU STATUS
Research only
WADA
Not listed
MIN PURITY
≥98% HPLC
Khavinson Bioregulators

Sigumir — EU research guide.

Sigumir is a synthetic tetrapeptide (Val-Glu-Pro-Asp) from the Khavinson bioregulator series targeting cartilage and joint tissue, proposed to regulate chondrocyte gene expression. It is studied in the same general category as Cartalax, another connective-tissue bioregulator in the same family.

Last reviewed:

What is Sigumir?

Sigumir is a synthetic tetrapeptide (Val-Glu-Pro-Asp) from the Khavinson bioregulator series targeting cartilage and joint tissue, proposed to regulate chondrocyte gene expression. It is studied in the same general category as Cartalax, another connective-tissue bioregulator in the same family.

What does the research show?

Published peer-reviewed research is limited to in-vitro studies in rat cartilage cells from the originating research group; the only human reports found are non-peer-reviewed institutional reports. No independently replicated human trial data is publicly available as of mid-2026.

EU legal status

Not approved as a medicine anywhere in the EU. Available from a small number of specialist research vendors for laboratory use only.

⚠ Should not be confused with established joint-research peptides like BPC-157 — the evidence base and proposed mechanism here are far more preliminary.
✓ Not yet tracked in PeptideCompare's price comparison. Verify any vendor's COA and sequence/identity claims directly before ordering — see our COA guide.
EVIDENCE SUMMARY
ANIMAL ONLY
Chondrocyte proliferation in rat cell cultures — In primary chondrocyte cultures from young (3-month) and old (20-month) rats, a polypeptide complex from bovine cartilage and its AED tripeptide component raised cell numbers by about 1.4 to 2.1 times (AED) and 1.7 to 2.5 times (complex) versus control, with a larger effect in old-animal cells. This is an in-vitro rat result from the originating St Petersburg group; the sample size is not stated in the abstract.
LIMITED
Small human reports, not peer reviewed — The only human data found are institutional reports from the same group, for example 33 treated and 31 control patients with osteoarthritis or osteochondrosis, reporting less pain and better joint mobility. These reports are not peer reviewed, not independent and not replicated, so they cannot support a treatment claim.
LIMITED
Clinical development status — A 2023 review from the same group says the cartilage polypeptide complex is in a phase 2 trial in osteoarthritis in Russia but cites no results. No randomised trial of Sigumir has been published in an indexed journal that I could verify.

Molecular information

CAS number
Not assigned

Pharmacokinetics

No established human pharmacokinetic data. Published human PK parameters for this compound are not available; reported data are limited to animal models or absent. No curve is shown, to avoid implying data that does not exist.

Potency retained over time

Each line is one storage condition: it starts at 100% and falls as potency is lost. Above the dashed 80% line the material is considered reliable — hover for exact values.

Freezer −20 °C
36+ mo
Stable · >95% potency
Fridge 4 °C
4-5 wks
In use · after recon
Room 20 °C
5-6 days
Avoid · increased loss
Warm 37 °C+
<1 day
Critical · rapid degradation

⚠ Modelled per compound from molecular structure — chain length, cyclisation, oxidation- and deamidation-prone residues and light sensitivity. Indicative only, not lab-measured per batch.

Sigumir is not yet in our price comparison

We expand EU supplier coverage every month.

References

  1. Review by the originating group of peptides that steer chondrogenic differentiation of stem cells. It describes the cartilage polypeptide complex (peptides of 75 to 846 Da, including AED) as in-vitro findings only and states a phase 2 trial in Russia without giving results. Linkova N, Khavinson V, Diatlova A, Myakisheva S, Ryzhak G. Peptide Regulation of Chondrogenic Stem Cell Differentiation. Int J Mol Sci. 2023;24(9):8415. DOIPubMed 37176122
  2. Cell-culture study of a bovine cartilage polypeptide complex and AED in rat chondrocytes from young and old animals. Proliferation rose in both age groups, more in old cells; it is rat cells in a dish, with no human data. Myakisheva S, Linkova N, Polyakova V, Ryzhak G. Peptides of cartilage tissue: regulation of chondrocyte proliferation, geroprotection and prospects for use in osteoarthrosis. Vrach. 2023;(10):46-49. DOI
  3. Vendor-hosted lecture slides that describe Sigumir as an extract of cartilage and bone of young animals (peptides of 75 to 10,000 Da) and quote small patient series. Not peer reviewed; the original papers behind the figures were not verified. Peptides in complex therapy of musculoskeletal pathology (lecture slides; file name attributes them to Linkova). Hosted on a vendor website, undated, not peer reviewed. Source
  4. Institutional report of the group's own medical centre with pain and joint-mobility outcomes in osteoarthritis and osteochondrosis. It is listed only to show what human data exist; it is not peer reviewed, not independent and hosted by a vendor. Khavinson V. Clinical study results of peptide bioregulator Sigumir (institutional report of the medical center of the St Petersburg Institute of Bioregulation and Gerontology; 33 treated and 31 control patients, 2005-2006). Hosted on a vendor website, undated, not peer reviewed. Source

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