A review examines multiple strategies for improving the intracellular delivery efficiency of arginine-rich cell-penetrating peptides through structural and formulation modifications.
Multiple enhancement strategiesStructural, conjugation, and formulation approaches improve arginine-rich CPP delivery
What the researchers found
Multiple strategies — structural modifications, conjugation, and formulation approaches — can significantly enhance arginine-rich CPP intracellular delivery efficiency.
Why it matters
Efficient intracellular drug delivery is one of the biggest challenges in medicine. Improving CPP technology could enable treatments for previously undruggable targets.
How the study worked
Literature review of strategies to improve arginine-rich cell-penetrating peptide delivery performance.
What this study cannot tell us
Review article — synthesizes existing research without generating new data; clinical translation of CPP strategies remains challenging.
How to read the evidence
Literature review — comprehensive synthesis of the field but no new experimental data.
When this study was published
Published 2026 in Journal of Materials Chemistry B.
The bigger picture
CPP technology is at the intersection of peptide science and drug delivery — advances here could transform treatment of cancer, genetic diseases, and intracellular infections.
Questions still open
- Which CPP modification strategy offers the best balance of efficacy and safety?
- Are any arginine-rich CPP delivery systems close to clinical translation?
Common questions
What are cell-penetrating peptides?
Why is arginine important for these peptides?
Read the original research
Strategies to improve intracellular delivery of arginine-rich cell-penetrating peptides.
Journal of materials chemistry. B
Citation
Anjous, Rachel; Kavyashree, P; Saha, Abhishek. (2026). Strategies to improve intracellular delivery of arginine-rich cell-penetrating peptides.. Journal of materials chemistry. B. https://doi.org/10.1039/d5tb02935j