Amphipathic Proline-Rich Cell Penetrating Peptides for Targeting Mitochondria.
Quick Facts
What This Study Found
Rigid proline-based peptides with cationic and hydrophobic groups arranged along a helical backbone achieved enhanced cell entry and selective accumulation in mitochondria. The peptides showed time-dependent redistribution from other compartments to mitochondria.
Key Numbers
Polyproline II (PPII) helical backbone. Cationic guanidinium groups and hydrophobic cyclohexyl groups aligned along helix edges. Time-dependent redistribution leading to prolonged mitochondrial residency.
How They Did This
Synthesized amphipathic oligoprolines with systematic variations in hydrophobicity. Compared rigid PPII helix peptides to flexible analogs. Assessed cellular uptake and mitochondrial selectivity using fluorescence microscopy and tracking.
Why This Research Matters
Many diseases involve mitochondrial dysfunction. Designing peptides that reliably and selectively reach mitochondria could enable targeted delivery of drugs to this key organelle.
What This Study Doesn't Tell Us
In vitro cell culture study only. No therapeutic cargo tested. Mitochondrial targeting efficiency in vivo is unknown. Cytotoxicity at higher concentrations not fully characterized.
Trust & Context
- Original Title:
- Amphipathic Proline-Rich Cell Penetrating Peptides for Targeting Mitochondria.
- Published In:
- ACS chemical biology, 20(9), 2298-2307 (2025)
- Authors:
- Schmitt, Adeline, Wennemers, Helma
- Database ID:
- RPEP-13465
Evidence Hierarchy
Read More on RethinkPeptides
Cite This Study
https://rethinkpeptides.com/research/RPEP-13465APA
Schmitt, Adeline; Wennemers, Helma. (2025). Amphipathic Proline-Rich Cell Penetrating Peptides for Targeting Mitochondria.. ACS chemical biology, 20(9), 2298-2307. https://doi.org/10.1021/acschembio.5c00479
MLA
Schmitt, Adeline, et al. "Amphipathic Proline-Rich Cell Penetrating Peptides for Targeting Mitochondria.." ACS chemical biology, 2025. https://doi.org/10.1021/acschembio.5c00479
RethinkPeptides
RethinkPeptides Research Database. "Amphipathic Proline-Rich Cell Penetrating Peptides for Targe..." RPEP-13465. Retrieved from https://rethinkpeptides.com/research/schmitt-2025-amphipathic-prolinerich-cell-penetrating
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.