کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10751505 | 1050314 | 2015 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Arf6 mediates Schwann cell differentiation and myelination
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Arf6 mediates Schwann cell differentiation and myelination Arf6 mediates Schwann cell differentiation and myelination](/preview/png/10751505.png)
چکیده انگلیسی
During development of the peripheral nervous system (PNS), Schwann cells wrap neuronal axons, becoming the myelin sheaths that help axonal functions. While the intercellular signals controlling the myelination process between Schwann cells and peripheral neurons are well studied, the transduction of these signals in Schwann cells still remains elusive. Here, we show that Arf6, an Arf protein of the small GTPase family, is involved in promoting the myelination process. Knockdown of Arf6 with the small-interfering (si)RNA in primary Schwann cells markedly decreases dibutyl-cyclic AMP-induced myelin marker protein expression, indicating that Arf6 plays a role in differentiation-like phenotypic changes. To obtain in vivo evidence, we generated small-hairpin (sh)RNA transgenic mice targeting Arf6 for Schwann cells. Transgenic mice exhibited reduced myelin thickness compared to littermate controls, consistent with the defective myelin formation observed in the transgenic mouse-derived Schwann cell and neuronal culture system. Transgenic mice also exhibited decreased phosphorylation of myelination-related signaling molecules such as Akt kinase cascade proteins as well as downregulation of myelin marker proteins. These results suggest that signaling through Arf6 is required for Schwann cell myelination, adding Arf6 to the list of intracellular signaling molecules involved in the myelination process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biochemical and Biophysical Research Communications - Volume 465, Issue 3, 25 September 2015, Pages 450-457
Journal: Biochemical and Biophysical Research Communications - Volume 465, Issue 3, 25 September 2015, Pages 450-457
نویسندگان
Tomohiro Torii, Yuki Miyamoto, Masahiro Yamamoto, Katsuya Ohbuchi, Hideki Tsumura, Kazuko Kawahara, Akito Tanoue, Hiroyuki Sakagami, Junji Yamauchi,