The C-terminal Helix 9 motif regulates cannabinoid receptor type 1 trafficking and surface expression
The C-terminal Helix 9 motif regulates cannabinoid receptor type 1 trafficking and surface expression
复制标题
C 端 Helix 9 基序调节大麻素受体 1 型运输和表面表达
DOI:
10.1101/501528
复制
发表时间:
2018
期刊:
影响因子:
--
通讯作者:
Fletcher-Jones A
中科院分区:
文献类型:
--
作者:
Fletcher-Jones A
Cannabinoid type 1 receptor (CB1R) is only stably surface expressed in axons, where it downregulates neurotransmitter release. How this tightly regulated axonal surface polarity is established and maintained is unclear. To address this question, we used time-resolved imaging to determine the trafficking of CB1R from biosynthesis to mature polarised localisation. We show that the secretory pathway delivery of CB1R is axonally biased and that surface expressed CB1R is more stable in axons than in dendrites. This dual mechanism is mediated by the CB1R C-terminal and involves the Helix 9 (H9) domain. Removal of theH9domain increases dendrite secretory pathway delivery and decreases in surface stability. Furthermore, CB1RΔH9is more sensitive to agonist-induced internalisation and less efficient at downstream signalling than CB1RWT. Together, these results shed new light on how polarity of CB1R is mediated and indicate that the C-terminalH9domain plays key roles in this process.
登录
查看更多内容
影响因子:
--
作者:
I. Katona
通讯作者:
I. Katona
影响因子:
3.6
作者:
McDonald, Neil A.;Henstridge, Christopher M.;Irving, Andrew J.
通讯作者:
Irving, Andrew J.
影响因子:
6.7
作者:
D. Reddy
通讯作者:
D. Reddy
影响因子:
5.5
作者:
A. Simon;C. Loverdo;A. Gaffuri;M. Urbański;D. Ladarré;D. Carrel;I. Rivals;Christophe Leterrier;O. Bénichou;P. Dournaud;B. Szabó;R. Voituriez;Z. Lenkei
通讯作者:
Z. Lenkei
影响因子:
3.6
作者:
Lawrence C. Blume;Theresa Patten;Khalil Eldeeb;S. Leone‐Kabler;Alexander A. Ilyasov;Bradley M Keegan;Jeremy E. O’Neal;C. Bass;R. Hantgan;W. Lowther;D. Selley;A. Howlett
通讯作者:
A. Howlett