Abstract
Extracellular vesicles (EVs) possess regenerative properties and are also considered as future vaccines. All types of cells secrete EVs; however, the amount of EVs secreted by the cells varies under various physiological as well as pathological states. Several articles have reviewed the molecular composition and potential therapeutic applications of EVs. Likewise, the ‘sorting signals’ associated with specific macromolecules have also been identified, but how the signal transduction pathways prevailing in the parent cells alter the molecular profile of the EVs or the payload they carry has not been sufficiently reviewed. Here, we have specifically discussed the implications of these alterations in the macromolecular cargo of EVs for their therapeutic applications in regenerative medicine.
Tweetable abstract
The regenerative potential of EVs relies on the molecular cargo they carry inside them. This review emphasizes how alterations in signal transduction pathways prevailing in the parent cells shape the molecular cargo of the EVs.
Papers of special note have been highlighted as: • of interest; •• of considerable interest
References
- 1. . Shedding light on the cell biology of extracellular vesicles. Nat. Rev. Mol. Cell Biol. 19, 213–228 (2018).
- 2. . Specificities of secretion and uptake of exosomes and other extracellular vesicles for cell-to-cell communication. Nat. Cell Biol. 21, 9–17 (2019).
- 3. Extracellular vesicles through the blood-brain barrier: a review. Fluids Barriers CNS 19, 60 (2022).
- 4. . Isolation and characterization of extracellular vesicles for clinical applications in cancer - time for standardization? Nanoscale Adv. 3, 1830–1852 (2021).
- 5. . Exosome-Based Vaccines: History, Current State, and Clinical Trials. Front. Immunol. 12
doi: 10.3389/FIMMU.2021.711565 (2021). - 6. . Membrane Microvesicles as Potential Vaccine Candidates. Int. J. Mol. Sci. 22, 1–21 (2021).
- 7. Identifying high-grade serous ovarian carcinoma-specific extracellular vesicles by polyketone-coated nanowires. Sci. Adv. 9, eade6958 (2023).
- 8. Stem cell-derived extracellular vesicles inhibit and revert fibrosis progression in a mouse model of diabetic nephropathy. Sci. Rep. 9
doi: 10.1038/S41598-019-41100-9 (2019). - 9. . From Mesenchymal Stromal Cells to Engineered Extracellular Vesicles: A New Therapeutic Paradigm. Front. Cell. Dev. Biol. 9, 705676 (2021).
- 10. Oral Progenitor Cell Line-Derived Small Extracellular Vesicles as a Treatment for Preferential Wound Healing Outcome. Stem Cells Transl. Med. 11, 861–875 (2022).
- 11. Mesenchymal stromal cells facilitate resolution of pulmonary fibrosis by miR-29c and miR-129 intercellular transfer. Exp. Mol. Med. 55
doi: 10.1038/S12276-023-01017-W (2023). - 12. . Unraveling the mechanisms that specify molecules for secretion in extracellular vesicles. Methods 177, 15–26 (2020).
- 13. Melanoma-derived small extracellular vesicles induce lymphangiogenesis and metastasis through an NGFR-dependent mechanism. Nat Cancer 2, 1387–1405 (2021).
- 14. Bioengineered bacteria-derived outer membrane vesicles as a versatile antigen display platform for tumor vaccination via Plug-and-Display technology. Nat. Commun. 12
doi: 10.1038/S41467-021-22308-8 (2021). - 15. Cx43-mediated sorting of miRNAs into extracellular vesicles. EMBO Rep. 23
doi: 10.15252/EMBR.202154312 (2022). - 16. . Mechanism of cargo sorting into small extracellular vesicles. Bioengineered 12, 8186–8201 (2021).
- 17. . Pharmacological Inhibition of p38 MAPK Rejuvenates Bone Marrow Derived-Mesenchymal Stromal Cells and Boosts their Hematopoietic Stem Cell-Supportive Ability. Stem Cell Rev. Rep. 17, 2210–2222 (2021).
- 18. . The Intercellular Communication Between Mesenchymal Stromal Cells and Hematopoietic Stem Cells Critically Depends on NF-κB Signalling in the Mesenchymal Stromal Cells. Stem Cell Rev. Rep. 18, 2458–2473 (2022).
- 19. . Thrombin Preconditioning Boosts Biogenesis of Extracellular Vesicles from Mesenchymal Stem Cells and Enriches Their Cargo Contents via Protease-Activated Receptor-Mediated Signaling Pathways. Int. J. Mol. Sci. 20
doi: 10.3390/IJMS20122899 (2019). •• They analyzed the cargo content of extracellular vesicles (EVs) secreted by human umbilical cord blood-derived mesenchymal stem cells (MSCs) treated with thrombin and found that thrombin increased EV production more than fivefold. - 20. Independent human mesenchymal stromal cell-derived extracellular vesicle preparations differentially attenuate symptoms in an advanced murine graft-versus-host disease model. Cytotherapy 25, 821–836 (2023).
- 21. Mitochondrial Metabolism and EV Cargo of Endothelial Cells Is Affected in Presence of EVs Derived from MSCs on Which HIF Is Activated. Int. J. Mol. Sci. 24
doi: 10.3390/IJMS24066002 (2023). • They showed that EVs isolated from adipose-derived stem cells primed with deferoxamine mesylate contained the miRNAs related to cell proliferation and angiogenesis. - 22. . Mesenchymal Stem Cells-Derived Apoptotic Extracellular Vesicles (ApoEVs): Mechanism and Application in Tissue Regeneration. Stem Cells
https://doi.org/10.1093/STMCLS/SXAD046 (2023). - 23. Apoptotic bodies derived from mesenchymal stem cells promote cutaneous wound healing via regulating the functions of macrophages. Stem Cell Res. Ther. 11
doi: 10.1186/S13287-020-02014-W (2020). - 24. . Overview of extracellular vesicle characterization techniques and introduction to combined reflectance and fluorescence confocal microscopy to distinguish extracellular vesicle subpopulations. Neurophotonics 9
doi: 10.1117/1.NPH.9.2.021903 (2022). - 25. . Isolation and characterization of extracellular vesicle subpopulations from tissues. Nature Protocols 16, 1548–1580 (2021).
- 26. . Isolation and characterization of extracellular vesicles for clinical applications in cancer - time for standardization? Nanoscale Adv. 3, 1830–1852 (2021).
- 27. Development of an optimized and scalable method for isolation of umbilical cord blood-derived small extracellular vesicles for future clinical use. Stem Cells Transl. Med. 10, 910–921 (2021).
- 28. A Good Manufacturing Practice-grade standard protocol for exclusively human mesenchymal stromal cell-derived extracellular vesicles. Cytotherapy 19, 458–472 (2017).
- 29. Minimal experimental requirements for definition of extracellular vesicles and their functions: a position statement from the International Society for Extracellular Vesicles. J. Extracell. Vesicles 3
doi: 10.3402/JEV.V3.26913 (2014). - 30. Minimal information for studies of extracellular vesicles 2018 (MISEV2018): a position statement of the International Society for Extracellular Vesicles and update of the MISEV2014 guidelines. J. Extracell. Vesicles 7
doi: 10.1080/20013078.2018.1535750 (2018). - 31. . Isolation and characterization of exosomes from cell culture supernatants and biological fluids. Curr. Protoc. Cell Biol. Chapter 3
doi: 10.1002/0471143030.CB0322S30 (2006). - 32. . Isolation and characterization of extracellular vesicles produced by cell lines. STAR Protoc. 2
doi: 10.1016/J.XPRO.2021.100295 (2021). - 33. . AKT Signaling Prevailing in Mesenchymal Stromal Cells Modulates the Functionality of Hematopoietic Stem Cells via Intercellular Communication. Stem Cells
doi: 10.1002/stem.2409 (2016). - 34. . Intercellular Transfer of Microvesicles from Young Mesenchymal Stromal Cells Rejuvenates Aged Murine Hematopoietic Stem Cells. Stem Cells 36, 420–433 (2018).
- 35. Development of an optimized and scalable method for isolation of umbilical cord blood-derived small extracellular vesicles for future clinical use. Stem Cells Transl. Med. 10, 910–921 (2021).
- 36. Improved isolation of extracellular vesicles by removal of both free proteins and lipoproteins n.d. Elife
doi: 10.7554/eLife ( 2023). - 37. An intercellular transfer of telomeres rescues T cells from senescence and promotes long-term immunological memory. Nat. Cell Biol. 24, 1461–1474 (2022).
- 38. . High-grade extracellular vesicles preparation by combined size-exclusion and affinity chromatography. Sci. Rep. 11, 1–13 (2021).
- 39. . Extracellular Vesicles in Regenerative Medicine: Potentials and Challenges. Tissue Eng. Regen. Med. 18, 479–484 (2021).
- 40. . Extracellular signals regulate the biogenesis of extracellular vesicles. Biol. Res. 55, 1–16 (2022).
- 41. C. elegans ciliated sensory neurons release extracellular vesicles that function in animal communication. Curr. Biol. 24, 519–525 (2014). • They reported that regulation of p38 MAPK pmk-1 is required for EV biogenesis in the neurons isolated from adult Caenorhabditis elegans.
- 42. Manumycin A suppresses exosome biogenesis and secretion via targeted inhibition of Ras/Raf/ERK1/2 signaling and hnRNP H1 in castration-resistant prostate cancer cells. Cancer Lett. 408
doi: 10.1016/j.canlet.2017.08.020 (2017). •• They have shown that the inhibition of the ERK 1/2 signaling pathway inhibits the production of EVs in prostate cancer cells, and sensitizes them to castration. These data demonstrate the importance of studying signal transduction pathways in the regulation of EV biogenesis in cancer cells. - 43. Large oncosomes in human prostate cancer tissues and in the circulation of mice with metastatic disease. Am. J. Pathol. 181
doi: 10.1016/j.ajpath.2012.07.030 (2012). - 44. Enhanced shedding of extracellular vesicles from amoeboid prostate cancer cells. Cancer Biol. Ther. 15
doi: 10.4161/cbt.27627 (2014). •• They showed that inhibition of p38-MAPK and activation of ERK1/2 triggered the release of nano-sized extracellular vesicles in the prostate cancer cells. They also showed that the release of EVs from cancer cells suppressed the proliferation of immune cells. This study underscores the role of cancerous EVs in immune suppression. - 45. . Inhibiting extracellular vesicles formation and release: a review of EV inhibitors. J. Extracell. Vesicles 9
doi: 10.1080/20013078.2019.1703244 (2019). - 46. Sorting signal targeting mRNA into hepatic extracellular vesicles. RNA Biol. 11, 836–844 (2014).
- 47. . Application of “primed” Mesenchymal Stromal Cells in Hematopoietic Stem Cell Transplantation: Current Status and Future Prospects. Stem Cells Dev. 28, 1473–1479 (2019).
- 48. Tissue-derived extracellular vesicles in cancers and non-cancer diseases: present and future. J. Extracell. Vesicles 10, e12175 (2021).
- 49. Mesenchymal Stem Cell-Extracellular Vesicle Therapy for Stroke: Scalable Production and Imaging Biomarker Studies. Stem Cells Transl. Med. 12
doi: 10.1093/STCLTM/SZAD034 (2023). - 50. Octopus -inspired gelatin-methacrylate scaffolds loaded with hBMSC-derived exosomes promote wound healing by regulating macrophage polarization. Smart Mater. Med. 5, 52–65 (2024).
- 51. . Alteration of payload in extracellular vesicles by crosstalk with mesenchymal stem cells from different origin. J. Nanobiotechnol. 19
doi: 10.1186/S12951-021-00890-9 (2021). • They showed that EVs derived from MSCs isolated from different sources exhibit different payloads depending on the cross-talk with the recipient cells. - 52. . Extracellular Vesicles for Regenerative Medicine Applications. Applied Sci. 12, 7472 (2022).
- 53. . Microvesicles Secreted by Nitric Oxide-Primed Mesenchymal Stromal Cells Boost the Engraftment Potential of Hematopoietic Stem Cells. Stem Cells 37, 128–138 (2019). • They found that MVs derived from MSCs primed with nitric oxide are enriched in mRNAs encoding HSC-supportive genes like Jagged-1 and Vegf-A, which when cocultured with HSCs improved their engraftment ability.
- 54. . Signal transduction in cancer. Cold Spring. Harb. Perspect. Med. 5
doi: 10.1101/CSHPERSPECT.A006098 (2015). - 55. . The forces driving cancer extracellular vesicle secretion. Neoplasia (United States) 23, 149–157 (2021).
- 56. . The biology and function of exosomes in cancer. J. Clin. Invest. 126, 1208–1215 (2016).
- 57. . Biogenesis and function of extracellular vesicles in cancer. Pharmacol. Ther. 188, 1–11 (2018).
- 58. . Cancer as an infective disease: the role of EVs in tumorigenesis. Mol. Oncol. 17, 390–406 (2023).
- 59. Pancreatic cancer exosomes initiate pre-metastatic niche formation in the liver. Nat. Cell. Biol. 17, 816–826 (2015).
- 60. Tumour exosome integrins determine organotropic metastasis. Nature 527, 329–335 (2015).
- 61. . Restoring Tissue Homeostasis at Metastatic Sites: A Focus on Extracellular Vesicles in Bone Metastasis. Front. Oncol. 11, 644109 (2021).
- 62. Acute lymphoblastic leukemia-derived extracellular vesicles affect quiescence of hematopoietic stem and progenitor cells. Cell Death Dis. 13
doi: 10.1038/S41419-022-04761-5 (2022). - 63. Extracellular vesicles secreted by triple-negative breast cancer stem cells trigger premetastatic niche remodeling and metastatic growth in the lungs. Int. J. Cancer 152, 2153–2165 (2023).
- 64. . Contribution of Tumor-Derived Extracellular Vesicles to Malignant Transformation of Normal Cells. Bioengineering 9
doi: 10.3390/BIOENGINEERING9060245 (2022). - 65. Targeting nucleic acid sensors in tumor cells to reprogram biogenesis and RNA cargo of extracellular vesicles for T cell-mediated cancer immunotherapy. Cell Rep. Med. 101171
doi: 10.1016/J.XCRM.2023.101171 (2023). - 66. MEK/ERK-mediated oncogenic signals promote secretion of extracellular vesicles by controlling lysosome function. Cancer Sci. 113, 1264–1276 (2022).
- 67. . Extracellular Vesicles and Transforming Growth Factor β Signaling in Cancer. Front. Cell Dev. Biol. 10
doi: 10.3389/FCELL.2022.849938 (2022). • They have reported that EVs secreted by cancer cells contain several macromolecules involved in the TGFβ1-mediated signaling pathway, which promotes cancer metastasis. This review summarizes how the cargo of cancerous EVs influences tumorigenesis, metastatic spread, immune evasion, and response to anti-cancer treatment. - 68. Challenges and advances in clinical applications of mesenchymal stromal cells. J. Hematol. Oncol. 14
doi: 10.1186/S13045-021-01037-X (2021). - 69. . A Comprehensive Review on Factors Influences Biogenesis, Functions, Therapeutic and Clinical Implications of Exosomes. Int. J. Nanomed. 16, 1281–1312 (2021).
- 70. Extracellular vesicle-based therapeutics: natural versus engineered targeting and trafficking. Exp. Mol. Med. 51, 1–12 (2019).
- 71. Extracellular vesicles through the blood-brain barrier: a review. Fluids Barriers CNS 19
doi: 10.1186/S12987-022-00359-3 (2022). - 72. . Specificities of secretion and uptake of exosomes and other extracellular vesicles for cell-to-cell communication. Nature Cell Biol. 21, 9–17 (2019).
- 73. . Exosomes as potential alternatives to stem cell therapy in mediating cardiac regeneration. Circ. Res. 117, 7–9 (2015).
- 74. . Extracellular Vesicle-Based Therapeutics: Preclinical and Clinical Investigations. Pharmaceutics 12, 1–26 (2020).
- 75. . Preserving extracellular vesicles for biomedical applications: consideration of storage stability before and after isolation. Drug Deliv. 28, 1501–1509 (2021).
- 76. . Cryopreservation of mesenchymal stromal cell-derived extracellular vesicles using trehalose maintains their ability to expand hematopoietic stem cells in vitro. Cryobiology 98, 152–163 (2021).