Research Papers:

Disrupted in schizophrenia 1 (DISC1) inhibits glioblastoma development by regulating mitochondria dynamics

Xingchun Gao, Yajing Mi, Na Guo, Zhifang Hu, Fengrui Hu, Dou liu, Lei Gao, Xingchun Gou and Weilin Jin _

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Oncotarget. 2016; 7:85963-85974. https://doi.org/10.18632/oncotarget.13290

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Xingchun Gao1,2,*, Yajing Mi1,*, Na Guo1,*, Zhifang Hu1, Fengrui Hu1, Dou liu1, Lei Gao1, Xingchun Gou1, Weilin Jin1,2,3

1Institute of Basic Medical Sciences and Shaanxi key Laboratory of ischemic Cardiovascular Disease, Xi’an Medical University, Xi’an 710021, P. R. China

2Institute of Nano Biomedicine and Engineering, Department of Instrument Science and Engineering, Key Lab. for Thin Film and Microfabrication Technology of Ministry of Education, School of Electronic Information and Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China

3National Centers for Translational Medicine, Shanghai Jiao Tong University, Shanghai 200240, P. R. China

*These authors contributed equally to this work

Correspondence to:

Xingchun Gou, email: [email protected]

Weilin Jin, email: [email protected], [email protected]

Keywords: glioblastoma, DISC1, mitochondria dynamics, self-renewal, Drp1

Received: August 15, 2016     Accepted: November 07, 2016     Published: November 11, 2016


Glioblastoma(GBM) is one of the most common and aggressive malignant primary tumors of the central nervous system and mitochondria have been proposed to participate in GBM tumorigenesis. Previous studies have identified a potential role of Disrupted in Schizophrenia 1 (DISC1), a multi-compartmentalized protein, in mitochondria. But whether DISC1 could regulate GBM tumorigenesis via mitochondria is still unknown. We determined the expression level of DISC1 by both bioinformatics analysis and tissue analysis, and found that DISC1 was highly expressed in GBM. Knocking down of DISC1 by shRNA in GBM cells significantly inhibited cell proliferation both in vitro and in vivo. In addition, down-regulation of DISC1 decreased cell migration and invasion of GBM and self renewal capacity of glioblastoma stem-like cells. Furthermore, multiple independent rings or spheres could be observed in mitochondria in GBM depleted of DISC1, while normal filamentous morphology was observed in control cells, demonstrating that DISC1 affected the mitochondrial dynamic. Dynamin-related protein 1 (Drp1) was reported to contribute to mitochondrial dynamic regulation and influence glioma cells proliferation and invasion by RHOA/ ROCK1 pathway. Our data showed a significant decrease of Drp1 both in mRNA and protein level in GBM lack of DISC1, indicating that DISC1 maybe affect the mitochondrial dynamic by regulating Drp1. Taken together, our findings reveal that DISC1 affects glioblastoma cell development via mitochondria dynamics partly by down regulation of Drp1.

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