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Exosomes are stable, lipid bilayer-enclosed vesicles capable of crossing biological barriers. They can carry a wide range of molecules required for intercellular communication. Once exosomes are released from the cell where they originated, they enter a recipient cell through various pathways such as fusion, receptor-mediated endocytosis, macropinocytosis, and phagocytosis.
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Intraluminal vesicles (ILVs) are small vesicles 50-80 nm in diameter formed during the maturation of early endosomes. A specialized endosome containing numerous ILVs is called a multivesicular body (MVB). ILVs contain internalized molecules such as antigens, nucleic acids, proteins, and metabolites. Some of these molecules are released from the MVBs inside exosomes and are transported to other cells. Other MVBs contain molecules that are retained in the ILVs and are later degraded within the...
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Secretory vesicles, also known as dense core vesicles (DCVs), are membrane-bound vesicles that transport secretory proteins, such as hormones or neurotransmitters. Regulated secretory vesicles transport proteins from the trans-Golgi network to the exterior of the cell. Proteins present in regulated secretory vesicles are required to be rapidly exocytosed in large amounts upon a specific stimulus.
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Related Experiment Video

Updated: Jul 18, 2025

An Enrichment Method for Small Extracellular Vesicles Derived from Liver Cancer Tissue
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An Enrichment Method for Small Extracellular Vesicles Derived from Liver Cancer Tissue

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Extracellular Vesicles and Fatty Liver.

Xiya Lu1, Meiyi Song2, Na Gao1

  • 1Department of Endoscopy, Cancer Hospital of China Medical University, Liaoning Cancer Hospital and Institute, Shenyang, China.

Advances in Experimental Medicine and Biology
|August 21, 2023
PubMed
Summary

Fatty liver disease, a growing global health concern, lacks reliable early diagnostic methods beyond invasive biopsy. Extracellular vesicles show promise as novel biomarkers for diagnosing and staging this condition.

Keywords:
Alcoholic liver diseaseExosomeExtracellular vesiclesFatty liverNon-alcoholic fatty liver disease

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Area of Science:

  • Hepatology and Cell Biology
  • Biomarker Discovery
  • Intercellular Communication

Background:

  • Fatty liver disease is a prevalent chronic condition with increasing incidence worldwide, posing significant risks for liver cirrhosis, cancer, and extrahepatic diseases.
  • Current diagnostic methods for fatty liver, including staging, are limited, with liver biopsy being the primary invasive option.
  • Early diagnosis and therapy are crucial for managing fatty liver and preventing severe complications.

Approach:

  • This review explores the multifaceted role of extracellular vesicles in the pathogenesis of fatty liver disease.
  • It examines how extracellular vesicles, derived from various cell types, mediate intercellular communication relevant to liver health.
  • The potential of extracellular vesicles as non-invasive biomarkers for fatty liver diagnosis and staging is investigated.

Key Points:

  • Extracellular vesicles are lipid membrane vesicles involved in cell-to-cell communication and disease processes.
  • These vesicles carry diverse biologically active molecules, reflecting their cellular origin and condition.
  • Emerging evidence links extracellular vesicle activity to the development and progression of fatty liver disease.

Conclusions:

  • Extracellular vesicles represent a promising avenue for developing novel, non-invasive diagnostic and therapeutic strategies for fatty liver.
  • Understanding the interplay between extracellular vesicles and fatty liver can pave the way for improved patient outcomes.
  • Further research into extracellular vesicle-based diagnostics could overcome the limitations of current fatty liver assessment methods.