Abstract
Exosomes are responsible for cell-to-cell communication and serves as a valuable drug delivery vehicle. However, exosome heterogeneity, non-standardized isolation methods and proteomics/bioinformatics approaches limit its clinical applications. To better understand exosome heterogeneity, biological function and molecular mechanism of its biogenesis, secretion and uptake, techniques in proteomics or bioinformatics were applied to investigate human embryonic kidney cell (293T cell line)-derived exosome proteome and enable an integrative comparison of exosomal proteins and protein-protein interaction (PPI) networks of eleven exosome proteomes extracted from diverse human samples, including 293T (two datasets), dermal fibroblast, mesenchymal stem cell, thymic epithelial primary cell, breast cancer cell line (MDA-MB-231), patient neuroblastoma cell, plasma, saliva, serum and urine. Mapping of exosome biogenesis/secretion/uptake-related proteins onto exosome proteomes highlights exosomal origin-specific routes of exosome biogenesis/secretion/uptake and exosome-dependent intercellular communication. The finding provides insight into comparative exosome proteomes and its biogenesis, secretion and uptake, and potentially contributes to clinical applications.
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Data Availability
The authors declare that the data that supports the findings of this study are available in the supplementary material of this article.
Abbreviations
- ESCRT:
-
endosomal sorting complexesrequired for transport
- GDDA:
-
Graphlet Degree Distribution agreement
- HDF:
-
human dermal fibroblast
- HEK:
-
human embryonic kidney
- HMSC:
-
human mesenchymal stem cell
- HTEC:
-
human thymic epithelial primary cell
- MS:
-
mass spectrometry
- MVB:
-
multivesicular body
- PPI:
-
protein-protein interaction
- RLIs:
-
receptor-ligand interactions
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (grant numbers 31470716, 31000323 and 31070672) and the Natural Science Foundation of Jiangsu Province (grant number BK20131272).
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Yang, H., Zhang, H., Gu, H. et al. Comparative Analyses of Human Exosome Proteomes. Protein J 42, 365–373 (2023). https://doi.org/10.1007/s10930-023-10100-0
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DOI: https://doi.org/10.1007/s10930-023-10100-0