ArticlePharmaceutical research2011
Dimeric cationic amphiphilic polyproline helices for mitochondrial targeting.
Article in Pharmaceutical research, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
5 citing papers in PubMed, 16 citations in OpenAlex.
- Polyproline-Polyornithine Diblock Copolymers with Inherent Mitochondria Tropism.Advanced materials (Deerfield Beach, Fla.) · 2025Article
- Exploring the Chemical Features and Biomedical Relevance of Cell-Penetrating Peptides.International journal of molecular sciences · 2024Review
- Dimeric unnatural polyproline-rich peptides with enhanced antibacterial activity.Bioorganic & medicinal chemistry letters · 2014Article
- Mitochondrial delivery of doxorubicin by triphenylphosphonium-functionalized hyperbranched nanocarriers results in rapid and severe cytotoxicity.Pharmaceutical research · 2013Article
- Chemical-functional diversity in cell-penetrating peptides.PloS one · 2013Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeEfficient delivery of therapeutic biopolymers across cell membranes remains a daunting challenge. The development of cell-penetrating peptides (CPPs) has been useful; however, many CPPs are found trapped within endosomes, limiting their use as delivery agents. We optimize a class of CPPs, cationic amphiphilic polyproline helices (CAPHs), for direct transport into cells with mitochondrial localization through dimerization.
methodsThe CAPH P11LRR used for this study has been found to enter cells by two distinct pathways: an endocytotic pathway was favored at low concentrations; internalization by direct transport was observed at higher concentrations. CAPH was dimerized to probe if direct transport within cells may be enhanced through increased association of CAPH with the membrane and through the association of individual peptides within the membrane.
resultsThe dimerization of the CAPH was found to significantly increase cellular uptake over its monomeric counterpart, with a concomitant lowering of the concentration threshold favoring direct transport. Evidence for direct transport within cells and mitochondrial localization was observed.
conclusionsCAPH cellular uptake efficiency can be significantly enhanced through peptide dimerization while favoring cell entry via direct transport at low concentration with low cell toxicity.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.