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Epidermal stem cells (EpiSCs) are mainly located at the basal layer of the epidermis. These cells repair minor injuries of the skin and replace dead skin cells. However, EpiSCs’ cannot heal severe wounds such as major burns or those from diabetes or hereditary disorders. In such cases, culturing the epidermal stem cells from the patient is possible and has yielded successful treatment options, such as laboratory-grown skin grafts. These grafts are synthesized using a patient’s own...
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Mesenchymal stem cells (MSCs) are adult stem cells that can differentiate into most connective tissue cell types, except for hematopoietic cells, depending upon the source of MSCs. For example, bone-marrow-derived MSCs (BM-MSCs) can differentiate into osteocytes, hepatocytes, and pancreatic and neuronal cells. MSCs can be isolated from various sources such as bone marrow, placenta, adipose tissue, teeth, and Wharton’s jelly, a gelatinous substance in the umbilical cord. The ease of their...
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Related Experiment Video

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Setting a Successful Sorting for Extracellular Vesicle Isolation
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Extracellular Vesicles for Immunomodulation in Tissue Regeneration.

Kaichao Zhang1,2, Lu Liu1,3, Ke Shi1,2

  • 1State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical University, Xi'an, China.

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Extracellular vesicles (EVs) show promise for regenerative medicine by modulating immune responses to aid tissue repair. Engineering these natural EVs enhances their therapeutic potential for treating tissue defects.

Keywords:
engineering constructionextracellular vesiclesimmune regulationtissue regeneration

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Area of Science:

  • Regenerative Medicine
  • Immunology
  • Biotechnology

Background:

  • Tissue injury and defects present a significant global challenge for regenerative medicine.
  • Immune responses are integral to tissue repair and regeneration, offering therapeutic targets.
  • Extracellular vesicles (EVs), including exosomes, microvesicles, and apoptotic vesicles, are key mediators of cell-cell communication with immunomodulatory roles.

Purpose of the Study:

  • To review the biology of EVs and their role in immune regulation.
  • To summarize the application of EV-based therapies in tissue regeneration, focusing on immune modulation.
  • To discuss engineered EVs for enhanced therapeutic performance in tissue repair.

Main Methods:

  • Review of existing literature on EV biology, immunomodulation, and therapeutic applications.
  • Focus on exosomes, microvesicles, and apoptotic vesicles.
  • Discussion of genetic and chemical engineering strategies for EVs.

Main Results:

  • EVs possess inherent immunomodulatory potential beneficial for tissue repair.
  • Engineered EVs can be optimized for enhanced therapeutic efficacy.
  • EV-based therapies demonstrate significant potential for modulating immune systems in tissue regeneration.

Conclusions:

  • Extracellular vesicles are potent therapeutic agents for tissue regeneration through immune modulation.
  • Engineering technologies provide tools to optimize natural EVs for improved clinical outcomes.
  • EV-based strategies hold outstanding potential for addressing tissue injury and defects.