Snake venom-derived peptide MQ232 shows promise as kidney-targeted treatment for hyponatremia and polycystic kidney disease
MQ232, a reticulated peptide optimized from snake toxin, showed low toxicity, strong kidney accumulation, pure aquaretic effect, and improved kidney cyst pathology in polycystic kidney disease mouse models.
Quick Facts
What This Study Found
MQ232: low acute/chronic toxicity. Strong kidney biodistribution. Pure aquaretic effect (water only, no electrolytes). Improved kidney histology in PKD mouse model. Derived from snake toxin with disulfide-bond reticulation.
Key Numbers
How They Did This
Peptide optimization from snake toxin. Toxicology in rats. Biodistribution in mice. Aquaretic efficacy assessment. PKD mouse model histology.
Why This Research Matters
Hyponatremia affects millions of hospitalized patients and PKD has no cure. A kidney-targeted peptide that removes water without electrolyte loss addresses a critical therapeutic gap.
The Bigger Picture
Venom-derived peptides continue to yield drug candidates (ziconotide from cone snails, exenatide from Gila monster). MQ232 adds to this tradition with a kidney-targeted application.
What This Study Doesn't Tell Us
Preclinical only. PKD model results are histological, not functional. Human pharmacokinetics unknown. Manufacturing of disulfide-bonded peptides can be challenging.
Questions This Raises
- ?Would MQ232 outperform tolvaptan for PKD?
- ?Can it treat SIADH-associated hyponatremia?
- ?Is the peptide stable enough for clinical development?
Trust & Context
- Key Stat:
- Kidney-targeted aquaretic Snake venom peptide MQ232 selectively accumulates in kidneys and removes water without electrolyte loss—addressing a key limitation of current diuretics
- Evidence Grade:
- Preclinical with toxicology, biodistribution, and disease model data. Good drug development package.
- Study Age:
- Published in 2025.
- Original Title:
- A Snake Toxin Derivative for Treatment of Hyponatremia and Polycystic Kidney Diseases.
- Published In:
- Journal of the American Society of Nephrology : JASN, 36(2), 181-192 (2025)
- Authors:
- Stanajic-Petrovic, Goran, Keck, Mathilde, Barbe, Peggy, Urman, Apolline, Correia, Evelyne, Isnard, Pierre, Duong Van Huyen, Jean-Paul, Chmeis, Khawla, Diarra, Sékou Siramakan, Palea, Stefano, Theodoro, Frederic, Nguyen, Anvi-Laëtitia, Castelli, Florence, Pruvost, Alain, Zhao, Wenchao, Mendre, Christiane, Mouillac, Bernard, Bienaimé, Frank, Robin, Philippe, Kessler, Pascal, Llorens-Cortes, Catherine, Servent, Denis, Nozach, Hervé, Maillère, Bernard, Guo, Dong, Truillet, Charles, Gilles, Nicolas
- Database ID:
- RPEP-13672
Evidence Hierarchy
Frequently Asked Questions
Can snake venom treat kidney disease?
A peptide derived from snake venom (MQ232) was engineered to target the kidneys specifically. In animal studies, it safely removed excess water without losing essential electrolytes and improved kidney cyst disease. This represents a new approach to treating conditions where the body retains too much water.
How does MQ232 differ from regular diuretics?
Most diuretics remove both water and electrolytes (sodium, potassium), which can cause dangerous imbalances. MQ232 produces "aquaresis"—removing only water. This makes it potentially safer for treating low sodium (hyponatremia) and fluid retention without causing electrolyte problems.
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Cite This Study
https://rethinkpeptides.com/research/RPEP-13672APA
Stanajic-Petrovic, Goran; Keck, Mathilde; Barbe, Peggy; Urman, Apolline; Correia, Evelyne; Isnard, Pierre; Duong Van Huyen, Jean-Paul; Chmeis, Khawla; Diarra, Sékou Siramakan; Palea, Stefano; Theodoro, Frederic; Nguyen, Anvi-Laëtitia; Castelli, Florence; Pruvost, Alain; Zhao, Wenchao; Mendre, Christiane; Mouillac, Bernard; Bienaimé, Frank; Robin, Philippe; Kessler, Pascal; Llorens-Cortes, Catherine; Servent, Denis; Nozach, Hervé; Maillère, Bernard; Guo, Dong; Truillet, Charles; Gilles, Nicolas. (2025). A Snake Toxin Derivative for Treatment of Hyponatremia and Polycystic Kidney Diseases.. Journal of the American Society of Nephrology : JASN, 36(2), 181-192. https://doi.org/10.1681/ASN.0000000505
MLA
Stanajic-Petrovic, Goran, et al. "A Snake Toxin Derivative for Treatment of Hyponatremia and Polycystic Kidney Diseases.." Journal of the American Society of Nephrology : JASN, 2025. https://doi.org/10.1681/ASN.0000000505
RethinkPeptides
RethinkPeptides Research Database. "A Snake Toxin Derivative for Treatment of Hyponatremia and P..." RPEP-13672. Retrieved from https://rethinkpeptides.com/research/stanajic-petrovic-2025-a-snake-toxin-derivative
Access the Original Study
Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.
This study breakdown was produced by the RethinkPeptides research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.