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Intracellular Delivery via Noncharged Sequence-Defined Cell-Penetrating Oligomers
Ngoc N Phan1, Connie Li1, Christopher A Alabi1
1Robert F. Smith School of Chemical and Biomolecular Engineering , Cornell University , 120 Olin Hall , Ithaca , New York 14853 , United States.
Bioconjugate Chemistry
|June 29, 2018
Summary
Researchers discovered new noncharged cell-penetrating oligoTEAs (CPOTs) for efficient intracellular drug delivery. These CPOTs show improved serum stability and lower cytotoxicity compared to traditional cell-penetrating peptides (CPPs).
Area of Science:
- Biochemistry
- Nanotechnology
- Drug Delivery
Background:
- Intracellular drug delivery systems face challenges with serum stability and efficiency.
- Traditional cell-penetrating peptides (CPPs) offer cargo delivery but suffer from degradation and unwanted biological interactions.
- Cationic CPPs have limitations hindering their therapeutic use.
Purpose of the Study:
- To discover a new class of noncharged cell-penetrating oligoTEAs (CPOTs).
- To evaluate the efficiency and cytotoxicity of CPOTs for intracellular delivery.
- To compare CPOT performance against established CPPs like R9 peptide.
Main Methods:
- Discovery and synthesis of novel noncharged oligoTEAs (CPOTs).
- In vitro assessment of cellular entry efficiency across various cell lines.
- Evaluation of cytotoxicity and serum stability.
- Comparative analysis with a benchmark CPP (R9 peptide).
Main Results:
- CPOTs demonstrated extensive and rapid cellular entry across different cell lines.
- CPOTs exhibited significantly lower cytotoxicity compared to traditional CPPs.
- The new noncharged CPOTs outperformed the R9 peptide in delivery efficiency.
- CPOTs showed improved stability in biological environments.
Conclusions:
- A novel class of noncharged cell-penetrating oligoTEAs (CPOTs) has been successfully developed.
- CPOTs represent a promising advancement for intracellular drug delivery, overcoming limitations of cationic CPPs.
- These noncharged macromolecular transporters offer a safer and more effective alternative for delivering hydrophilic small-molecule therapeutics intracellularly.
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