| Autor: |
Keizo Takenaga, Jim Nygren, Marina Zelenina, Miki Ohira, Toshihiko Iuchi, Eugen Lukanidin, Mats Sjöquist, Elena N. Kozlova |
| Jazyk: |
angličtina |
| Rok vydání: |
2007 |
| Předmět: |
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| Zdroj: |
Neurobiology of Disease, Vol 25, Iss 3, Pp 455-463 (2007) |
| Druh dokumentu: |
article |
| ISSN: |
1095-953X |
| DOI: |
10.1016/j.nbd.2006.10.021 |
| Popis: |
The calcium-binding Mts1/S100A4 protein plays an important role in motility and metastatic activity of tumor cells. Recently we showed that Mts1/S100A4 is expressed in white matter astrocytes and influences their migration in vitro and in vivo. Here, we have investigated the role of Mts1/S100A4 expression in C6 glioma cells or surrounding astrocytes for migration of C6 cells on astrocytes, using short interference (si) RNA to silence Mts1/S100A4 expression. We find that in vitro, the migration of Mts1/S100A4 expressing and silenced C6 cells on astrocytes is predominantly dependent on the expression of Mts1/S100A4 in astrocytes, i.e. C6 cells preferably migrate on Mts1/S100A4-silenced astrocytes. In vivo, Mts1/S100A4-positive C6 cells preferably migrate in white matter. In contrast Mts1/S100A4-silenced C6 cells avoid white matter and migrate in gray matter and meninges. Thus, the migration pattern of C6 cells is affected by their intrinsic Mts1/S100A4 expression as well as Mts1/S100A4 expression in astrocytes.To investigate if Mts1/S100A4 has a significant role on brain tumor progression, we made quantitative RT-PCR analysis for the expression of S100A4/Mts1 in various grades of astrocytic tumors. Our data showed that high-grade glioblastomas express higher amount of S100A4/Mts1 than low-grade astrocytic tumors. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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