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TUBB4B Downregulation Is Critical for Increasing Migration of Metastatic Colon Cancer Cells

1
Department of Molecular Cell Mechanisms, Medical University of Lodz, 92215 Lodz, Poland
2
Department of Endocrinology and Metabolic Diseases, Medical University of Lodz, 93338 Lodz, Poland
3
Institute of Medical Biology, PAS, 93232 Lodz, Poland
*
Authors to whom correspondence should be addressed.
Cells 2019, 8(8), 810; https://doi.org/10.3390/cells8080810
Received: 27 June 2019 / Revised: 30 July 2019 / Accepted: 30 July 2019 / Published: 1 August 2019
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Abstract

Tumor metastasis, the major problem for clinical oncology in colon cancer treatment, is linked with an epithelial-mesenchymal transition (EMT). The observed cellular transformation in this process is manifested by cell elongation, enhanced cell migration and invasion ability, coordinated by cytoskeleton reorganization. In the present study, we examined the role of tubulin-β4 (TUBB4B) downregulation that occurs during EMT in colon cancer cells, in the modulation of the function of microtubules. Based on biochemical and behavioral analysis (transmigration) we posit that the decrease of the TUBB4B level is critical for microtubule-vimentin interaction and contributes to the maintenance of polarity in migrating cells. The microscopic studies revealed that TUBB4B decrease is accompanied by cell elongation and increased number of matured focal adhesion sites, which is a characteristic of the cell metastatic stage. We also demonstrated faster polymerization of microtubules in cells with a lower level of TUBB4B. Simultaneous TUBB3 upregulation, reported during EMT, acts additively in this process. Our studies suggest that the protein level of TUBB4B could be used as a marker for detection of the preinvasive stages of the colon cancer cells. We also concluded that chemotherapy enriched to increase TUBB4B level and/or to stabilize microtubule polymerization might more effectively prevent metastasis in colon cancer development. View Full-Text
Keywords: microtubules; vimentin; colon cancer; EMT; migration microtubules; vimentin; colon cancer; EMT; migration
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Sobierajska, K.; Ciszewski, W.M.; Wawro, M.E.; Wieczorek-Szukała, K.; Boncela, J.; Papiewska-Pajak, I.; Niewiarowska, J.; Kowalska, M.A. TUBB4B Downregulation Is Critical for Increasing Migration of Metastatic Colon Cancer Cells. Cells 2019, 8, 810.

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