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Complementary DNA

Complementary DNA

Regulated mRNA Transport

Regulated mRNA Transport

In eukaryotes, transcription and translation are compartmentalized; an mRNA is first synthesized in the nucleus and then selectively transported to the cytoplasm for protein synthesis. Before transport, a pre-mRNA undergoes several steps of post-transcriptional modifications including splicing, 5' capping, and the addition of a poly-adenine tail. Various proteins bind to the pre-mRNA during these modifications. The mRNA transport takes place with the help of multiple proteins playing...

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Generation of Cationic Nanoliposomes for the Efficient Delivery of In Vitro Transcribed Messenger RNA

Generation of Cationic Nanoliposomes for the Efficient Delivery of In Vitro Transcribed Messenger RNA

Published on: February 1, 2019

Charge-Complementary Polymersomes for Enhanced mRNA Delivery.

HakSeon Kim^1,2, Yu-Rim Ahn^1,2, Minse Kim^1,2

¹Division of Chemical Engineering and Bioengineering, College of Art, Culture and Engineering, Kangwon National University, Chuncheon-si 24341, Gangwon-do, Republic of Korea.

|December 23, 2023

Summary

This summary is machine-generated.

ChargeSome nanoparticles protect messenger RNA (mRNA) from degradation and enhance its delivery into cells. This novel system offers a promising solution for advancing mRNA therapeutics and vaccines.

Keywords:

ChargeSome electrostatic interactions endosomal escape mRNA polymersome transfection

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Area of Science:

Biotechnology
Nanomedicine
Molecular Biology

Background:

Messenger RNA (mRNA) therapies offer personalized treatment potential but face challenges with molecular instability and inefficient cellular delivery.
Current limitations hinder the full therapeutic application of mRNA technology.
Developing robust delivery systems is crucial for mRNA-based therapeutics.

Purpose of the Study:

To introduce and characterize "ChargeSome" nanoparticles as a novel delivery system for mRNA.
To evaluate the efficiency of ChargeSomes in protecting mRNA from degradation and facilitating cellular uptake.
To assess the safety and mechanism of mRNA release from ChargeSomes within cells.

Main Methods:

Physicochemical characterization of ChargeSomes using techniques like 1H nuclear magnetic resonance, Fourier-transform infrared spectroscopy, and dynamic light scattering.
Evaluation of cell uptake and mRNA delivery efficiency with ChargeSomes formulated at a specific mPEG-b-PLL to mPEG-b-PLL-SA ratio (9:1).
In vitro cytotoxicity assessments and investigation of the pH-sensitive mRNA release mechanism, including endosome escape via the proton sponge effect.

Main Results:

ChargeSomes demonstrated effective protection of mRNA from degradation by ribonucleases (RNases).
A 9:1 ratio of mPEG-b-PLL to mPEG-b-PLL-SA in ChargeSomes significantly improved cell uptake and mRNA delivery efficiency.
ChargeSomes exhibited minimal cytotoxicity in vitro and facilitated endosome escape for cytoplasmic mRNA delivery through pH-sensitive release.

Conclusions:

ChargeSomes represent a novel and effective system for the secure delivery of mRNA.
The nanoparticles offer stability, protection, and efficient delivery, addressing key limitations in current mRNA technology.
ChargeSomes show significant potential for advancing the development of mRNA-based therapeutics and vaccines.