ArticleNanomaterials (Basel, Switzerland)2020
Tyrosine-Modification of Polypropylenimine (PPI) and Polyethylenimine (PEI) Strongly Improves Efficacy of siRNA-Mediated Gene Knockdown.
Article in Nanomaterials (Basel, Switzerland), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 28 citations in OpenAlex.
- Developing a pan cancer therapy based on DISE-inducing short RNAs.Molecular therapy. Nucleic acids · 2026Article
- Nose-to-brain siRNA delivery by PEI/PPI-based nanoparticles reduces α-synuclein expression in a Parkinson's disease mouse model.Molecular therapy. Nucleic acids · 2025Article
- Nose-to-brain drug delivery: from bench to bedside.Translational neurodegeneration · 2025Review
- Synthesis of ionizable lipopolymers using split-Ugi reaction for pulmonary delivery of various size RNAs and gene editing.Nature communications · 2025Article
- Analysis of Polymer/siRNA Nanoparticle Efficacy and Biocompatibility in 3D Air-Liquid Interface Culture Compared to 2D Cell Culture.Pharmaceutics · 2025Article
- Article
- Polytrimethylenimines: Highly Potent Antibacterial Agents with Activity and Toxicity Modulated by the Polymer Molecular Weight.Biomacromolecules · 2023Article
- Dendrimer: An update on recent developments and future opportunities for the brain tumors diagnosis and treatment.Frontiers in pharmacology · 2023Review
- Nanocarriers for delivery of siRNA as gene silencing mediator.EXCLI journal · 2022Review
- Nonviral Locally Injected Magnetic Vectors for In Vivo Gene Delivery: A Review of Studies on Magnetofection.Nanomaterials (Basel, Switzerland) · 2021Review
- Advances in Nanomaterials in Biomedicine.Nanomaterials (Basel, Switzerland) · 2021Article
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
Abstract
The delivery of small interfering RNAs (siRNA) is an efficient method for gene silencing through the induction of RNA interference (RNAi). It critically relies, however, on efficient vehicles for siRNA formulation, for transfection in vitro as well as for their potential use in vivo. While polyethylenimines (PEIs) are among the most studied cationic polymers for nucleic acid delivery including small RNA molecules, polypropylenimines (PPIs) have been explored to a lesser extent. Previous studies have shown the benefit of the modification of small PEIs by tyrosine grafting which are featured in this paper. Additionally, we have now extended this approach towards PPIs, presenting tyrosine-modified PPIs (named PPI-Y) for the first time. In this study, we describe the marked improvement of PPI upon its tyrosine modification, leading to enhanced siRNA complexation, complex stability, siRNA delivery, knockdown efficacy and biocompatibility. Results of PPI-Y/siRNA complexes are also compared with data based on tyrosine-modified linear or branched PEIs (LPxY or PxY). Taken together, this establishes tyrosine-modified PPIs or PEIs as particularly promising polymeric systems for siRNA formulation and delivery.
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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.