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Updated: Jul 6, 2025

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Published on: February 24, 2021
TBC1D1 represses glioma progression by altering the integrity of the cytoskeleton
Jiahong Cai1, Yong'an Jiang1, Peng Chen1
1Department of Neurosurgery, The Second Affiliated Hospital of Nanchang University, Nanchang 330000, Jiangxi, China.
Background:
Glioma is one of the most aggressive malignant brain tumors and is characterized by invasive growth and poor prognosis. TBC1D1, a member of the TBC family, is associated with the development of various malignancies. However, the role of TBC1D1 in glioma-genesis remains unclear.
Methods:
The effect of TBC1D1 on the prognosis of glioma patients and related influencing factors were analyzed in the Chinese Glioma Genome Atlas (CGGA) and The Cancer Genome Atlas (TCGA) databases. Expression of TBC1D1 in glioma cell lines was detected by western blotting. Cell viability and proliferation were measured by EdU and Colony formation assays, respectively. Transwell and wound healing assays were performed to determine the cell migration and invasion capacities. Immunofluorescence was used to observe actin morphology in the cytoskeleton.
Results:
We discovered that high TBC1D1 expression in gliomas led to poor prognosis. Downregulation of TBC1D1 in glioma cells significantly inhibited multiple important functions, such as proliferation, migration, and invasion. We further demonstrated that the tumor-inhibitory effect of TBC1D1 might occur through the P-LIMK/cofilin pathway, destroying the cytoskeletal structure and affecting the depolymerization of F-actin, thereby inhibiting glioma migration.
Conclusion:
TBC1D1 affects the balance and integrity of the actin cytoskeleton via cofilin, thereby altering the morphology and aggressiveness of glioma cells. This study provides a new perspective on its role in tumorigenesis, thereby identifying a potential therapeutic target for the treatment of gliomas.
Insights
High TBC1D1 expression correlates with poor glioma prognosis. Inhibiting TBC1D1 reduces glioma cell proliferation, migration, and invasion by affecting the actin cytoskeleton, suggesting TBC1D1 as a potential therapeutic target.
Area of Science:
- Neuro-oncology
- Molecular Biology
- Cell Biology
Background:
- Glioma is an aggressive brain tumor with poor prognosis.
- TBC1D1 is linked to various cancers, but its role in glioma is unknown.
Purpose of the Study:
- To investigate the role of TBC1D1 in glioma development and prognosis.
- To explore TBC1D1 as a potential therapeutic target for glioma.
Main Methods:
- Analyzed TBC1D1 expression in glioma patient data (CGGA, TCGA).
- Assessed TBC1D1's effect on glioma cell viability, proliferation, migration, and invasion in vitro.
- Investigated the P-LIMK/cofilin pathway and actin cytoskeleton dynamics.
Main Results:
- High TBC1D1 expression is associated with poor glioma prognosis.
- Downregulating TBC1D1 inhibited glioma cell proliferation, migration, and invasion.
- TBC1D1 affects actin cytoskeleton integrity via the P-LIMK/cofilin pathway.
Conclusions:
- TBC1D1 influences glioma cell aggressiveness by altering actin cytoskeleton balance.
- TBC1D1 represents a potential therapeutic target for glioma treatment.
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