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Tubulin polymerization promoting protein 1 (TPPP1): A DNA-damage induced microtubule regulatory gene
The eukaryotic cell cycle relies heavily on the mechanical forces vested by the dynamic rearrangement of the microtubule (MT) network. Tubulin Polymerization promoting Protein 1 (TPPP1) alters MT dynamics by driving MT polymerization as well as stabilization, via increasing MT acetylation. It increa...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Landes Bioscience
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3925458/ https://www.ncbi.nlm.nih.gov/pubmed/24567774 http://dx.doi.org/10.4161/cib.26316 |
Sumario: | The eukaryotic cell cycle relies heavily on the mechanical forces vested by the dynamic rearrangement of the microtubule (MT) network. Tubulin Polymerization promoting Protein 1 (TPPP1) alters MT dynamics by driving MT polymerization as well as stabilization, via increasing MT acetylation. It increases MT rigidity, which results in reduced cell proliferation through downregulation of G(1)/S-phase and mitosis to G(1)-phase cell cycle transitioning. In this communication, we provide further evidence that TPPP1 may be an important regulator of genomic homeostasis. Our preliminary data show that long-term TPPP1 overexpression reduces cell viability via induction of apoptotic cell death pathways. Moreover, induction of DNA-damage results in increased TPPP1 expression, which is inhibited in the absence of expression of the tumor suppressor p53. |
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