NDLI: Bcl-2 protects against apoptosis-related microtubule alterations in neuronal cells

Content Provider	Springer Nature Link
Author	Nuydens, Rony Dispersyn, Gwenda Van Den Kieboom, Gerd De Jong, Mirjam Conrs, Rich Ramaekers, Frans Borgers, Marcel Geerts, Hugo
Copyright Year	2000
Abstract	Bcl-2 is a gene with clear anti-apoptotic properties in neurodegenerative conditions. One of the earliest hallmarks of degeneration in neuronal cell cultures is the loss of neurite morphology. Therefore the effect of Bcl-2 on neuronal morphology and microtubule stability was studied in nerve growth factor differentiated PC12 cells. Microtubule dynamics were modulated using the microtubule stabilizer taxol and the microtubule destabilizer, okadaic acid, a protein phosphatase inhibitor. It was shown that Bcl-2 protects against both taxol- and okadaic acid induced neurite retraction. Bcl-2 overexpression also significantly reduced the increased ratio of acetylated tubulin over total tubulin induced by taxol treatment. Interestingly, Bcl-2 attenuates the decrease of the same ratio after exposure to okadaic acid, suggesting that Bcl-2 is able to normalize the level of acetylated tubulin. In addition, cell death and nuclear fragmentation, induced by okadaic acid, were reduced in Bcl-2 overexpressing cells. This protection is either downstream or independent of tau phosphorylation as quantitative immunocytochemistry with AT8 showed that Bcl-2 did not modify the level of tau phosphorylation. The data suggest that the protective effect of Bcl-2 on the neuronal cytoskeleton is probably linked to changes in the post-translational modification of tubulin.
Starting Page	43
Ending Page	51
Page Count	9
File Format	PDF
ISSN	13608185
Journal	Apoptosis
Volume Number	5
Issue Number	1
e-ISSN	1573675X
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2000-01-01
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cancer Research Virology Anatomy Oncology Biochemistry
Content Type	Text
Resource Type	Article
Subject	Pharmaceutical Science Biochemistry (medical) Cell Biology Clinical Biochemistry Cancer Research Pharmacology

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