Temporin A

Also known as: Temporin-1A, Frog antimicrobial peptide

A small frog-derived antimicrobial peptide with potent activity against Leishmania and other parasites.

Overview

Temporin A is a 13-amino acid antimicrobial peptide isolated from the European red frog (Rana temporaria). Despite its small size, it demonstrates remarkable antiparasitic activity, particularly against Leishmania species responsible for leishmaniasis, a neglected tropical disease.

Mechanism of Action

Temporin A forms an alpha-helical structure that inserts into parasite membranes. Its small size allows rapid membrane penetration. It targets both the plasma membrane and internal organelle membranes, including mitochondria, leading to apoptosis-like death in parasites.

Pharmacokinetics

Small size enables rapid tissue penetration. More resistant to certain proteases than larger AMPs. Can cross biological barriers effectively.

Dosing Protocols

Note: These are research protocols from literature. This is not medical advice.

1

Research Protocol

Dose

10-50 mcg/mL topical

Frequency

1-2x daily

Duration

2-4 weeks

For cutaneous leishmaniasis research

Stacking Recommendations

Peptides that may be combined based on complementary mechanisms in research settings.

Rationale: Enhanced antimicrobial coverage

Synergy: Different size peptides target different membrane regions

Research Areas

LeishmaniasisAntiparasitic DevelopmentDrug-Resistant InfectionsTropical DiseasesCombination Therapies

Key Research Findings

  • 1Highly effective against Leishmania infantum and L. major promastigotes and amastigotes
  • 2IC50 values in low micromolar range against multiple Leishmania species
  • 3Induces mitochondrial dysfunction and apoptosis in parasites
  • 4Active against drug-resistant Leishmania strains
  • 5Synergistic with standard leishmanicidal drugs (amphotericin B, miltefosine)

Side Effects & Contraindications

Reported Side Effects

  • Local irritation
  • Mild erythema

Contraindications

  • Frog peptide sensitivity
  • Application to large wound areas

Safety Considerations

Research compound. Shows selectivity for parasite over host cells but high doses may cause hemolysis.

Storage Requirements

Store lyophilized at -20°C. Light sensitive.

Scientific References

Quick Reference

Sequence
FLPLIGRVLSGIL
Molecular Weight
1396.77 g/mol
Half-Life
15-30 minutes
Bioavailability
Local application; systemic use limited
Research Stage
preclinical
Administration
Topical or local injection