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Published in: Child's Nervous System 3/2008

01-03-2008 | Original Paper

Cytotoxicity of human umbilical cord blood-derived mesenchymal stem cells against human malignant glioma cells

Authors: Seok-Gu Kang, Sin Soo Jeun, Jung Yeon Lim, Seong Muk Kim, Yoon Sun Yang, Won IL Oh, Pil-Woo Huh, Chun Kun Park

Published in: Child's Nervous System | Issue 3/2008

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Abstract

Background

Mesenchymal stem cells (MSCs) represent a potential useful source for cell-based glioma therapies because these cells evidence both orthodox and unorthodox plasticity and also show tropism for cancer. In this study, the authors attempted to access the cytotoxicity of human umbilical cord blood (hUCB)-derived MSCs, with or without cytokine activations against malignant glioma cells.

Materials and methods

hUCB-derived MSCs were activated by interleukin-2, interleukin-15, granulocyte macrophage colony-stimulating factor, and combinations. The hUCB-derived MSCs and activated hUCB-derived MSCs were effector cells. The cytotoxicity of the unactivated hUCB-derived MSCs and activated hUCB-derived MSCs against the target cells (human malignant glioma cells) was estimated via visual survival cell assays and transwell inserts. Phenotypic changes occurring in these hUCB-derived MSCs before and after cytokine activation were determined via flow cytometry. The secreted proteins from these effector cells were estimated via enzyme-linked immunosorbent assays.

Results

We noted a significant cytotoxicity of hUCB-derived MSCs against malignant glioma cells. In addition, the hUCB-derived MSCs activated with cytokines evidenced significantly higher cytotoxicity than that observed with unactivated hUCB-derived MSCs. Differentiated immune effectors cells from the hUCB-derived MSCs after cytokine activation were not shown to have increased in number. However, the activated hUCB-derived MSCs secreted more immune response-related proteins (interleukin 4, interferon-γ) than did the unactivated hUCB-derived MSCs.

Conclusion

The data collected herein confirm for the first time that hUCB-derived MSCs, with or without activation, evidence significant cytotoxicity against human malignant glioma cells, and the immune response-related proteins secreted in this process may perform relevant functions.
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Metadata
Title
Cytotoxicity of human umbilical cord blood-derived mesenchymal stem cells against human malignant glioma cells
Authors
Seok-Gu Kang
Sin Soo Jeun
Jung Yeon Lim
Seong Muk Kim
Yoon Sun Yang
Won IL Oh
Pil-Woo Huh
Chun Kun Park
Publication date
01-03-2008
Publisher
Springer-Verlag
Published in
Child's Nervous System / Issue 3/2008
Print ISSN: 0256-7040
Electronic ISSN: 1433-0350
DOI
https://doi.org/10.1007/s00381-007-0515-2

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