Regulation of cargo selection in exosome biogenesis and its biomedical applications in cancer
Contact us if these videos are not relevant.
Contact us if these videos are not relevant.
View abstract on PubMed
Summary
This summary is machine-generated.Extracellular vesicles (EVs), or exosomes, are key to cell communication, carrying molecules that impact health and disease. Understanding how exosomes sort cargo is vital for developing new therapies and biomarkers.
Area Of Science
- Cell Biology
- Biochemistry
- Molecular Medicine
Background
- Extracellular vesicles (EVs), particularly exosomes, are critical mediators of intercellular communication.
- They transport diverse bioactive molecules, influencing physiological and pathological processes.
- Exosomes are promising as disease biomarkers, therapeutic agents, and drug delivery vehicles.
Purpose Of The Study
- To review current knowledge on the molecular mechanisms governing exosome cargo sorting.
- To summarize the biological functions and clinical applications of exosomes, especially in diseases like cancer.
- To highlight the importance of understanding exosome loading for therapeutic development.
Main Methods
- Literature review summarizing existing research on exosome biogenesis and cargo sorting.
- Analysis of molecular mechanisms involved in the selective packaging of proteins, lipids, and nucleic acids into exosomes.
- Discussion of the functional implications of exosome cargo in recipient cells.
Main Results
- Exosomes contain specific sets of molecules (proteins, lipids, nucleic acids) that determine their function.
- The selective sorting and packaging of cargo into exosomes are complex processes not yet fully understood.
- Exosome cargo plays a crucial role in intercellular signaling, disease progression, and therapeutic responses.
Conclusions
- A deeper understanding of exosome cargo sorting mechanisms is essential for elucidating their roles in health and disease.
- Elucidating these mechanisms will facilitate the identification of novel therapeutic targets.
- This knowledge is critical for advancing the clinical application of exosomes in diagnostics and therapeutics.
Contact us if these videos are not relevant.
Contact us if these videos are not relevant.
Related Concept Videos
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.
Stahl et al. discovered exosomes in 1983, but the exosomes were initially considered waste products released from the...
Nuclear protein sorting regulates nucleus composition and gene expression, crucial for determining the fate of a eukaryotic cell. Hence, the entry and exit of molecules across the nuclear envelope is a tightly controlled process. Nuclear protein sorting can be inhibited by one of the following ways: 1) masking cargo signal sequences, 2) modifying the nuclear receptor's affinity for cargo, 3) controlling the nuclear pore size, 4) retaining the cargo during its transit to the cytosol or the...
Gene expression can be regulated at almost every step from gene to protein. Transcription is the step that is most commonly regulated. This involves the binding of proteins to short regulatory sequences on the DNA. This association can either promote or inhibit the transcription of a gene associated with the respective sequence.
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...
Multivesicular bodies (MVBs) are mature endosomes that sort ubiquitinated proteins and then fuse with lysosomes to degrade the sorted proteins. Epidermal growth factor (EGF) and its receptor (EGFR) form a complex that can be internalized through endocytosis, sorted into an MVB, and later degraded.
The EGFR can initiate signaling pathways that lead to cell proliferation, migration, and differentiation. Overexpression of EGFR stimulates cells to proliferate. Excessive EGFR...
The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the...