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Related Concept Videos

Nucleic Acid Structure01:25

Nucleic Acid Structure

The pentose sugar in DNA is deoxyribose, while in RNA the pentose sugar is ribose. The difference between the sugars is the presence of the hydroxyl group on the ribose's second carbon and a hydrogen on the deoxyribose's second carbon. The phosphate residue attaches to the hydroxyl group of the 5′ carbon of one sugar and the hydroxyl group of the 3′ carbon of the sugar of the next nucleotide, which forms  a 5′ to 3′ phosphodiester linkage.
DNA Structure
DNA has a double-helix structure. The...

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Related Experiment Video

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Combining QD-FRET and Microfluidics to Monitor DNA Nanocomplex Self-Assembly in Real-Time
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Microfluidics-Assembled Nanovesicles for Nucleic Acid Delivery.

Xuanyu Li1,2, Zhiliang Qin2, Saijie Wang2

  • 1Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, The NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences, Guangzhou Medical University, Guangzhou, 510182 Guangdong, P. R. China.

Accounts of Chemical Research
|February 4, 2025
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Summary

Microfluidic technology enables precise, one-step production of nanovesicles for drug delivery, improving reproducibility and enabling multi-drug codelivery. Innovations address cytotoxicity and enhance control over nanovesicle properties for clinical applications.

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Area of Science:

  • Biotechnology and Nanotechnology
  • Materials Science
  • Drug Delivery Systems

Background:

  • Conventional nanovesicle production methods suffer from batch-to-batch variability due to complex intermediate steps.
  • Nanovesicles are promising for drug and nucleic acid delivery but face challenges with cytotoxicity and in vivo stability.
  • Positively charged nanovesicles, often used for nucleic acid delivery, exhibit significant cytotoxicity.

Purpose of the Study:

  • To highlight the advantages of microfluidic technology for reproducible nanovesicle production.
  • To discuss strategies for mitigating nanovesicle cytotoxicity for enhanced clinical feasibility.
  • To explore microfluidic control over nanovesicle properties like size, rigidity, and morphology.

Main Methods:

  • Utilized microfluidic platforms for one-step, streamlined assembly of nanovesicles encapsulating diverse therapeutic agents.
  • Investigated charge-shifting materials and surface modifications to reduce nanovesicle cytotoxicity at physiological pH.
  • Manipulated flow rates and interfacial water layers within microfluidic channels to control particle size and potentially rigidity.

Main Results:

  • Microfluidics enables precise control over nanovesicle size and encapsulation efficiency, improving batch-to-batch reproducibility.
  • Charge-shifting strategies show promise in reducing nanovesicle cytotoxicity, enhancing clinical potential.
  • Automation through advanced microfluidic designs improves the integration of assembly and surface modification.

Conclusions:

  • Microfluidic technologies offer a powerful platform for developing multifunctional nanovesicles for precision medicine.
  • Overcoming challenges in cytotoxicity, scalability, and reproducibility is key for clinical translation.
  • Continued innovation in chip design, materials, and automation will advance microfluidic applications in therapeutic delivery.