Sociedad Americana de Hirudoterapia

Haemadipsa yanyuanensis Progranulin (Hy-PGRN)

Putative progranulin gene with 122 cysteine residues and nine tandem repeats — distinctive structural organization (Lin 2025 chromosome-level genome).

Preclínico / mecanísticoLast updated: 2026-05-27 · Reviewed by ASH Editorial Board
Molecular weight of Haemadipsa yanyuanensis Progranulin (Hy-PGRN) compared with other characterized leech-derived compoundsHementerin80 kDaHementin80 kDaHementin-Like Protein (HLP-1)80 kDaHaemadipsa yanyuanensis Progr…70 kDaLeech Collagenase70 kDaLeech Apyrase67 kDaCalin65 kDaHyaluronidase60 kDaAntithrombin III binding prot…58 kDaCollagenolytic Fibrinolysin55 kDaLeech Thrombospondin-Like Pro…50 kDaLHyal (Leech Hyaluronidase)50 kDa
Molecular weight (kilodaltons) of Haemadipsa yanyuanensis Progranulin (Hy-PGRN) (highlighted) alongside other characterized leech salivary compounds. Smaller proteins/peptides generally diffuse and act faster.

Mechanistic Evidence Box

Preclinical / mechanistic
Page type
Compound profile
Evidence type
Putative progranulin gene with 122 cysteine residues and nine tandem repeats — distinctive structural organization (Lin 2025 chromosome-level genome).
Evidence level
Mechanistic discussion
Drug vs leech
Purified natural compound

Clinical translation limit

Hy-PGRN is identified at the genomic / sequence level only. Hypothesized roles based on mammalian progranulin homology are NOT clinically validated. No FDA-approved derivative exists.

Molecular Profile

Category
Anti-inflammatory
Evidence tier
Preclinical
Molecular weight
70,000 Da
Source species
Haemadipsa yanyuanensis
Discovered
2025 · Lin Y et al.
Haemadipsa yanyuanensis Progranulin (Hy-PGRN) molecular structure

Biological Targets

  • unknown (homology-based, predicted role in wound microenvironment)

Key Citations

  1. Lin Y et al. (2025), BMC Genomics · PMID 41469844

External Resources

    Related Anti-inflammatory Compounds

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