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Molecular and Cellular Mechanisms of Glioblastoma
Article

Inhibition of FABP6 Reduces Tumor Cell Invasion and Angiogenesis through the Decrease in MMP-2 and VEGF in Human Glioblastoma Cells

1
Department of Emergency Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei 11490, Taiwan
2
Department of Biology and Anatomy, National Defense Medical Center, Taipei 11490, Taiwan
3
Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei 11490, Taiwan
*
Authors to whom correspondence should be addressed.
Academic Editors: Javier S. Castresana and Bárbara Meléndez
Cells 2021, 10(10), 2782; https://doi.org/10.3390/cells10102782
Received: 6 September 2021 / Revised: 13 October 2021 / Accepted: 13 October 2021 / Published: 17 October 2021
(This article belongs to the Special Issue Molecular and Cellular Mechanisms of Cancers: Glioblastoma II)
Malignant glioma is one of the most lethal cancers with rapid progression, high recurrence, and poor prognosis in the central nervous system. Fatty acid-binding protein 6 (FABP6) is a bile acid carrier protein that is overexpressed in colorectal cancer. This study aimed to assess the involvement of FABP6 expression in the progression of malignant glioma. Immunohistochemical analysis revealed that FABP6 expression was higher in glioma than in normal brain tissue. After the knockdown of FABP6, a decrease in the migration and invasion abilities of glioma cells was observed. The phosphorylation of the myosin light chain was inhibited, which may be associated with migration ability. Moreover, expression levels of invasion-related proteins, matrix metalloproteinase-2 (MMP-2) and cathepsin B, were reduced. Furthermore, tube formation was inhibited in the human umbilical vein endothelial cells with a decreased concentration of vascular endothelial growth factor (VEGF) in the conditioned medium after the knockdown of FABP6. The phosphorylation of the extracellular signal-regulated kinase (ERK), c-Jun NH2-terminal kinase (JNK), and p65 were also decreased after FABP6 reduction. Finally, the bioluminescent images and immunostaining of MMP-2, cluster of differentiation 31 (CD31), and the VEGF receptor 1 (VEGFR1) revealed attenuated tumor progression in the combination of the FABP6-knocked-down and temozolomide (TMZ)-treated group in an orthotopic xenograft mouse tumor model. This is the first study that revealed the impact of FABP6 on the invasion, angiogenesis, and progression of glioma. The results of this study show that FABP6 may be a potential therapeutic target combined with TMZ for malignant gliomas. View Full-Text
Keywords: FABP6; invasion; angiogenesis; glioblastoma FABP6; invasion; angiogenesis; glioblastoma
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MDPI and ACS Style

Pai, F.-C.; Huang, H.-W.; Tsai, Y.-L.; Tsai, W.-C.; Cheng, Y.-C.; Chang, H.-H.; Chen, Y. Inhibition of FABP6 Reduces Tumor Cell Invasion and Angiogenesis through the Decrease in MMP-2 and VEGF in Human Glioblastoma Cells. Cells 2021, 10, 2782. https://doi.org/10.3390/cells10102782

AMA Style

Pai F-C, Huang H-W, Tsai Y-L, Tsai W-C, Cheng Y-C, Chang H-H, Chen Y. Inhibition of FABP6 Reduces Tumor Cell Invasion and Angiogenesis through the Decrease in MMP-2 and VEGF in Human Glioblastoma Cells. Cells. 2021; 10(10):2782. https://doi.org/10.3390/cells10102782

Chicago/Turabian Style

Pai, Feng-Cheng, Hsiang-Wei Huang, Yu-Ling Tsai, Wen-Chiuan Tsai, Yu-Chen Cheng, Hsin-Han Chang, and Ying Chen. 2021. "Inhibition of FABP6 Reduces Tumor Cell Invasion and Angiogenesis through the Decrease in MMP-2 and VEGF in Human Glioblastoma Cells" Cells 10, no. 10: 2782. https://doi.org/10.3390/cells10102782

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