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Regulation of neuronal differentiation by proteins associated with nuclear bodies.

التفاصيل البيبلوغرافية
العنوان: Regulation of neuronal differentiation by proteins associated with nuclear bodies.
المؤلفون: Benjamin Förthmann, Jeroen van Bergeijk, Yu-Wei Lee, Verena Lübben, Yvonne Schill, Hella Brinkmann, Andreas Ratzka, Michal K Stachowiak, Michael Hebert, Claudia Grothe, Peter Claus
المصدر: PLoS ONE, Vol 8, Iss 12, p e82871 (2013)
بيانات النشر: Public Library of Science (PLoS), 2013.
سنة النشر: 2013
المجموعة: LCC:Medicine
LCC:Science
مصطلحات موضوعية: Medicine, Science
الوصف: Nuclear bodies are large sub-nuclear structures composed of RNA and protein molecules. The Survival of Motor Neuron (SMN) protein localizes to Cajal bodies (CBs) and nuclear gems. Diminished cellular concentration of SMN is associated with the neurodegenerative disease Spinal Muscular Atrophy (SMA). How nuclear body architecture and its structural components influence neuronal differentiation remains elusive. In this study, we analyzed the effects of SMN and two of its interaction partners in cellular models of neuronal differentiation. The nuclear 23 kDa isoform of Fibroblast Growth Factor - 2 (FGF-2(23)) is one of these interacting proteins - and was previously observed to influence nuclear bodies by destabilizing nuclear gems and mobilizing SMN from Cajal bodies (CBs). Here we demonstrate that FGF-2(23) blocks SMN-promoted neurite outgrowth, and also show that SMN disrupts FGF-2(23)-dependent transcription. Our results indicate that FGF-2(23) and SMN form an inactive complex that interferes with neuronal differentiation by mutually antagonizing nuclear functions. Coilin is another nuclear SMN binding partner and a marker protein for Cajal bodies (CBs). In addition, coilin is essential for CB function in maturation of small nuclear ribonucleoprotein particles (snRNPs). The role of coilin outside of Cajal bodies and its putative impacts in tissue differentiation are poorly defined. The present study shows that protein levels of nucleoplasmic coilin outside of CBs decrease during neuronal differentiation. Overexpression of coilin has an inhibitory effect on neurite outgrowth. Furthermore, we find that nucleoplasmic coilin inhibits neurite outgrowth independent of SMN binding revealing a new function for coilin in neuronal differentiation.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 1932-6203
Relation: http://europepmc.org/articles/PMC3866168?pdf=render; https://doaj.org/toc/1932-6203
DOI: 10.1371/journal.pone.0082871
URL الوصول: https://doaj.org/article/ff076f29399142cb86fa9a882184af86
رقم الأكسشن: edsdoj.ff076f29399142cb86fa9a882184af86
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:19326203
DOI:10.1371/journal.pone.0082871