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The ER, Golgi apparatus, endosomes, and lysosomes work in tandem to modify, sort, and package proteins and lipids. An integrated membrane trafficking network facilitates the back and forth shuttling of molecules within different organelles in the same cell or across the cell membrane.
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Clathrin-coated vesicles use endocytosis to transport receptors and lysosomal hydrolases from the Golgi to the lysosome in the late secretory pathway. Clathrin-mediated endocytosis was the first described endocytic process, and Clathrin-coated vesicles remain one of the most well-studied transport vesicles. The molecular machinery that generates clathrin-coated vesicles comprises over 50 proteins that precisely coordinate vesicle formation. Cell surface receptors concentrated in indented sites...
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Vesicular Trasport: Endocytosis, Transcytosis and Exocytosis01:18

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Vesicular transport is a cellular process that encompasses the engulfment of particles or dissolved substances by cells. It involves endocytosis, transcytosis, and exocytosis.
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Membrane-enclosed structures called vesicles transport proteins and lipids across the cell. The vesicles derive their cargo from the plasma membrane, Golgi, ER, or endosome. Coated vesicles are spherical, protein-coated carriers with a 50–100 nm diameter that mediate bidirectional transport between the ER and the Golgi. The distribution of proteins between the ER and Golgi complex is dynamic and is maintained by different coated vesicles. Their formation is driven by the assembly of...
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Exocytosis is a process that releases molecules outside the cell. Like other bulk transport mechanisms, exocytosis requires energy.
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Characterizing Extracellular Vesicles from Biological Fluids
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Overview and Update on Methods for Cargo Loading into Extracellular Vesicles.

Yohan Han1, Timothy W Jones1, Saugata Dutta1

  • 1Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia and Charlie Norwood VA Medical Center, Augusta, GA 30912, USA.

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This summary is machine-generated.

Extracellular vesicles (EVs) show promise as drug carriers, overcoming limitations like poor drug delivery and toxicity. Researchers are exploring various loading methods and engineered EVs for enhanced therapeutic potential and future clinical applications.

Keywords:
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Area of Science:

  • Biotechnology
  • Nanomedicine
  • Pharmacology

Background:

  • Pharmaceutical compounds face limitations including drug resistance, toxicity, and poor delivery.
  • Extracellular vesicles (EVs), naturally released from cells, are emerging as potent drug carriers.
  • EVs can transfer biological information and deliver hydrophobic drugs effectively into cells.

Purpose of the Study:

  • To review methods for loading various therapeutic cargoes into EVs.
  • To summarize recent advancements in engineered EVs for drug delivery.
  • To discuss the advantages and challenges of using EVs as a drug delivery system.

Main Methods:

  • Review of literature on EV cargo loading techniques (siRNA, miRNA, mRNA, CRISPR/Cas9, proteins, drugs).
  • Analysis of recent developments in engineering EVs for enhanced drug delivery.
  • Discussion of current challenges and future directions in EV-based drug delivery.

Main Results:

  • EVs loaded with various therapeutic agents demonstrate improved delivery efficiency and therapeutic effects.
  • Engineered EVs offer enhanced capabilities for targeted drug delivery.
  • Significant scientific interest exists in applying EVs as a novel drug delivery system.

Conclusions:

  • EVs present a promising platform for overcoming traditional drug delivery challenges.
  • Further development of convenient and reliable loading methods is crucial for clinical translation.
  • Continued research into engineered EVs will unlock their full potential in medicine.