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B. Yu, X. Zhang, X. Li. “Exosomes derived from mesenchymal stem cells”, Int J Mol Sci, 7; 15(3):4142-57, 2014.

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Article

The Main Molecules Involved in Human Mesenchymal Stem Cells Immunomodulation

1Laboratory of Genetics and Molecular Hematology, University of Sao Paulo Medical School, Sao Paulo, SP, Brazil

2Laboratory of Pharmaceutical Science, University of Sao Paulo, Sao Paulo, SP, Brazil


Biomedical Science and Engineering. 2015, Vol. 3 No. 1, 4-8
DOI: 10.12691/bse-3-1-2
Copyright © 2015 Science and Education Publishing

Cite this paper:
Felipe de Lara Janz, Helen Dutra Leite, Sergio Paulo Bydlowski. The Main Molecules Involved in Human Mesenchymal Stem Cells Immunomodulation. Biomedical Science and Engineering. 2015; 3(1):4-8. doi: 10.12691/bse-3-1-2.

Correspondence to: Felipe  de Lara Janz, Laboratory of Genetics and Molecular Hematology, University of Sao Paulo Medical School, Sao Paulo, SP, Brazil. Email: fljanz@usp.br

Abstract

Mesenchymal stem cells (MSCs) are described as undifferentiated cells with high capacity for self-renewal and differentiation ability in different tissues. MSCs are found in various locations in the adult organism as bone marrow, adipose tissue; and in fetal tissues as umbilical cord, placenta and amniotic fluid. They are able to produce and secrete a number of bioactive molecules with different effects: anti-fibrotic, angiogenic and mitogen. These cells also present a great immunomodulatory and anti-inflammatory potential described in experimental and human models. Several studies have demonstrated the ability of MSCs to suppress the proliferation and activation of T, B and NK cells in vitro and in vivo. Its low immunogenic action causes are not recognized by HLA mismatched receptor complex because they express low levels of MHC-I do not express MHC-II and costimulatory molecules CD40, CD80 and CD86. Because of these unique characteristics, MSCs arouse great interest in possible clinical applications in the therapy of diseases that affect the immune system. Although depending on the tissue microenvironment, the MSCs can also trigger inflammatory events. In this work, we described the main factors and another structures involved in MSCs immunoregulation.

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