15-Deoxi-Δ12,14-prostaglandin J2 is a tubulin-binding agent that destabilizes microtubules and induces mitotic arrest
15-Deoxi-Delta(12,14)-prostaglandin J(2) (15d-PGJ(2)) is known to play an important role in the pathophysiology of carcinogenesis, however, the molecular mechanisms underlying these effects are not yet fully understood. Recently, we have shown that 15d-PGJ(2) is a potent inducer of breast cancer cel...
| Autores: | , , , , , |
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| Tipo de documento: | artigo |
| Estado: | Versão publicada |
| Data de publicação: | 2009 |
| País: | Argentina |
| Recursos: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositório: | CONICET Digital (CONICET) |
| Idioma: | inglês |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/137309 |
| Acesso em linha: | http://hdl.handle.net/11336/137309 |
| Access Level: | Acceso aberto |
| Palavra-chave: | 15D-PGJ2 CANCER CELL DEATH CYTOSKELETON MITOSIS TUBULIN https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
| Resumo: | 15-Deoxi-Delta(12,14)-prostaglandin J(2) (15d-PGJ(2)) is known to play an important role in the pathophysiology of carcinogenesis, however, the molecular mechanisms underlying these effects are not yet fully understood. Recently, we have shown that 15d-PGJ(2) is a potent inducer of breast cancer cell death and that this effect is associated with a disruption of the microtubule cytoskeletal network. Here, we show that treatment of the MCF-7 breast cancer cell line with 15d-PGJ(2) induces an accumulation of cells in the G(2)/M compartment of the cell cycle and a marked disruption of the microtubule network. 15d-PGJ(2) treatment causes mitotic abnormalities that consist of failure to form a stable metaphase plate, incapacity to progress through anaphase, and failure to complete cytokinesis. 15d-PGJ(2) binds to tubulin through the formation of a covalent adduct with at least four cysteine residues in alpha- and beta-tubulin, as detected by hybrid triple-quadrupole mass spectrometry analysis. Overall, these results support the hypothesis that microtubule disruption and mitotic arrest, as a consequence of the binding of 15d-PGJ(2) to tubulin, can represent one important pathway leading to breast cancer cell death. |
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