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Review
. 2020 Dec;38(12):1373-1384.
doi: 10.1016/j.tibtech.2020.04.013. Epub 2020 Jul 1.

Emergence of the Stem Cell Secretome in Regenerative Engineering

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Review

Emergence of the Stem Cell Secretome in Regenerative Engineering

Leila Daneshmandi et al. Trends Biotechnol. 2020 Dec.

Abstract

The secretome is defined as the set of molecules and biological factors that are secreted by cells into the extracellular space. In the past decade, secretome-based therapies have emerged as a promising approach to overcome the limitations associated with cell-based therapies for tissue and organ regeneration. Considering the growing number of recent publications related to secretome-based therapies, this review takes a step-by-step engineering approach to evaluate the role of the stem cell secretome in regenerative engineering. We discuss the functional benefits of the secretome, the techniques used to engineer the secretome and tailor its therapeutic effects, and the delivery systems and strategies that have been developed to use the secretome for tissue regeneration.

Keywords: conditioned media; regenerative engineering; secretome; stem cell; tissue engineering.

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Figures

Figure 1.
Figure 1.. Schematic Representation of the Secretome and Its Therapeutic Effects.
Stem cells secrete various soluble factors and extracellular vehicles (including exosomes and microvesicles) that are collectively termed the secretome. These biologically active factors exert therapeutic effects through their proangiogenic, antifibrotic, antiapoptotic, anti-inflammatory, and immunomodulatory properties. Abbreviations: ANG, angiogenin; ANGPT-1, angiopoietin-1; Cyr61, cysteine-rich protein 61; FGF-2, fibroblast growth factor 2; G/M-CSF, granulocyte/macrophage colony stimulating factor; HGF, hepatocyte growth factor; IDO-1, indolamine 2,3-dioxygenase-1; IFN-γ, interferon-γ; IGF-1, insulin-like growth factor-1; IL-1Ra, IL-1 receptor antagonist; IL-6, interleukin-6; MCP-1, monocyte chemoattractant protein-1; MFGE-8, milk fat globule-EGF factor 8; miR-, miRNAs found within the extracellular vesicles; PGE2, prostaglandin E2; SDF-1, stromal-derived factor-1; STC-1, stanniocalcin-1; TGF-β1, transforming growth factor-β1; TIMP-1, tissue inhibitors of metalloproteinase-1; VEGF, vascular endothelial growth factor.

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