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Researches and Applications of Stem Cell Secretome

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Stem cells: From Potential to Promise

Abstract

Unlike the terminally differentiated somatic cells, stem cells are characterized by their unlimited, undifferentiated self-renewal, and differentiation potential to adopt diverse phenotypes, a property which is being exploited in cell-based therapy to repair injured organs or tissues. In the body, stem/progenitor cells are an essential part of the body’s intrinsic repair system in tissue injury to replace the damaged cells. Recent data indicate that the mechanism of stem cell therapy’s effectiveness may be due to cells’ paracrine activity more than to the replacement of the injured cells at the site of injury. The paracrine effect stems from their secretome that contains a significant number of growth factors, chemokines, cytokines, and exosomes. The cell secretome’s regulatory role has been validated in various physiological processes, including homing in of the cells to injured body sites, regulating apoptotic processes, proliferation, migration, and differentiation. The immunomodulatory and regenerative capacity of these paracrine factors plays an essential role in determining the therapeutic outcome after treatment with stem cells. As a cell-free regenerative therapeutic alternative, stem cell secretome has enormous potential to alleviate neurodegenerative disease, ischemic stroke, lung diseases, liver diseases, and renal diseases.

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Abbreviations

6-OHDA:

6-hydroxydopamine

AD:

Alzheimer’s disease

AKI:

Acute kidney injury

ALI:

Abnormalities underlying acute lung injury

Ang-2:

Angiopoietin-2

APAP:

Acetaminophen

ASCs:

Adipose stem cells

BM-MSCs:

Bone marrow-derived MSCs

BNDF:

Brain-derived neurotrophic factor

BPD:

Bronchopulmonary dysplasia

CKD:

Chronic kidney disease

CM:

Conditioned medium

CNTF:

Ciliary neurotrophic factor

COMT:

Catechol-O-methyltransferase

EMT:

Epithelial to mesenchymal transition

ESRD:

End-stage renal disease

EVs:

Extracellular vesicles

GDNF:

Glial cell line-derived neurotrophic factor

hBM-MSCs:

Human BM-MSCs

HGF:

Hepatocyte growth factor

hMSCs:

Human MSCs

hNPCs:

Human neural progenitor cells

hUc-MSCs:

Human umbilical cord-derived MSCs

IDO:

Indoleamine 2,3 dioxygenase

IGF-1:

Insulin-like growth factor-1

KGF:

Keratinocyte growth factor

MAO-B:

Monoamine oxidase B

MIP-2:

Macrophage inflammatory protein-2

MMP-2:

Matrix metalloproteinase-2

NCM:

Nonconditioned media

NFkb:

Nuclear factor kappa-light-chain-enhancer of activated B cells

PDGF-A:

Platelet-derived growth factor-AA

PGE2:

Prostaglandin-E2 (PGE2 substantia nigra)

STAT3:

Signal transducer and activator of transcription 3

TGF-β:

Transforming growth factor-β

TNF-α:

Tumor necrosis factor-alpha

VCAM-1:

Vascular cell adhesion molecule 1

VEGF:

Vascular endothelial growth factor

VEGFR2:

VEGF receptor 2

WJ-MSCs:

WJ-derived MSCs

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Correspondence to Jufeng Xia .

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© 2021 The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

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Xia, J., Arai, S., Haider, K.H. (2021). Researches and Applications of Stem Cell Secretome. In: Haider, K.H. (eds) Stem cells: From Potential to Promise. Springer, Singapore. https://doi.org/10.1007/978-981-16-0301-3_7

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