Taxol affects nuclear lamina and pore complex organization and inhibits import of karyophilic proteins into the cell nucleus
Φόρτωση...
Ημερομηνία
Συγγραφείς
Theodoropoulos, P. A.
Polioudaki, H.
Kostaki, O.
Derdas, S. P.
Georgoulias, V.
Dargemont, C.
Georgatos, S. D.
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer-reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
Cancer Res
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
Treatment of human carcinoma cells with Taxol induces focal unraveling of the nuclear lamina and extensive clustering or ectopic localization of the nuclear pore complexes. These striking aberrations develop when the cells are transferred to drug-free medium and are allowed to complete mitosis. As could be confirmed by terminal deoxynucleotidyl transferase-mediated nick end labeling assays, 4,6-diamidino-2-phenylindole staining, 5-bromo-2-deoxyuridine incorporation, and examination of the nuclear lamins by Western blotting, the malformation of the nuclear envelope is not a consequence of apoptosis or G1 arrest. In fact, Taxol-treated cells possessing a defective nuclear envelope remain alive and replication-competent for at least 24 h, undergoing programmed death 72 h after removal of the drug. While still in the nonapoptotic state, these cells lose the ability to import karyophilic proteins into the nucleus. Diminished nucleocytoplasmic transport through the nuclear pore complex can be readily demonstrated by in vitro assays involving digitonin-permeabilized cells or in vivo monitoring of nuclear factor-kappaB translocation upon stimulation with tumor necrosis factor-alpha. These observations reveal novel cellular targets of antimicrotubule drugs and may pave the way for improved schemes of anticancer treatment.
Περιγραφή
Λέξεις-κλειδιά
Apoptosis, Bromodeoxyuridine/pharmacokinetics, Cell Cycle/drug effects, Cell Division/drug effects, Cell Nucleus/*drug effects/metabolism/ultrastructure, Cell Survival/drug effects, HeLa Cells, Humans, In Situ Nick-End Labeling, Lamins, Microscopy, Video, Mitotic Index/drug effects, NF-kappa B/*metabolism, Nuclear Envelope/*drug effects/ultrastructure, Nuclear Proteins/metabolism, Paclitaxel/*toxicity, Tumor Cells, Cultured, Tumor Necrosis Factor-alpha/drug effects
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
http://www.ncbi.nlm.nih.gov/pubmed/10493517
http://cancerres.aacrjournals.org/content/59/18/4625.full.pdf
http://cancerres.aacrjournals.org/content/59/18/4625.full.pdf
Γλώσσα
en
Εκδίδον τμήμα/τομέας
Όνομα επιβλέποντος
Εξεταστική επιτροπή
Γενική Περιγραφή / Σχόλια
Ίδρυμα και Σχολή/Τμήμα του υποβάλλοντος
Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών Υγείας. Τμήμα Ιατρικής