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Decellularization of Whole Human Heart Inside a Pressurized Pouch in an Inverted Orientation
Published on: November 26, 2018
Human Heart Explant-Derived Extracellular Vesicles: Characterization and Effects on the In Vitro Recellularization of
Amanda Leitolis1, Paula Hansen Suss2, João Gabriel Roderjan3
1Laboratory of Basic Biology of Stem Cells, Carlos Chagas Institute, Fiocruz-Paraná, Curitiba 81350-010, Brazil. aleitolis@gmail.com.
Human heart-derived extracellular vesicles (hH-EVs) show promise for tissue regeneration. These vesicles promote cell proliferation, angiogenesis, and wound healing, aiding in scaffold recellularization.
Area of Science:
- Regenerative Medicine
- Biomaterials Science
- Cell Biology
Background:
- Extracellular vesicles (EVs) are crucial for paracrine signaling and show therapeutic potential in tissue regeneration.
- Human heart-derived extracellular vesicles (hH-EVs) offer a promising source for regenerative applications.
Purpose of the Study:
- To isolate and characterize hH-EVs from discarded human heart tissue.
- To investigate the in vitro effects of hH-EVs on cellular processes relevant to tissue repair.
- To evaluate the potential of hH-EVs in recellularizing decellularized heart valve scaffolds.
Main Methods:
- Isolation of hH-EVs from human heart tissue.
- Physical characterization using Nanoparticle Tracking Analysis (NTA) and Transmission Electron Microscopy (TEM).
- Proteomic profiling via Mass Spectrometry (MS) and Gene Ontology (GO) enrichment analysis.
Main Results:
- Characterization confirmed hH-EVs with identified proteins involved in cell death and wound response.
- In vitro studies showed hH-EVs promote endothelial cell proliferation and angiogenesis.
- hH-EVs improved wound healing, reduced stem cell adhesion, and enhanced scaffold recellularization.
Conclusions:
- hH-EVs possess significant regenerative potential, modulating key cellular processes.
- These findings highlight hH-EVs as a viable therapeutic tool for tissue regeneration and scaffold engineering.
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