Regulatory connection between the expression level of classical protein kinase C and pruning of climbing fibers from cerebellar Purkinje cells

Regulatory connection between the expression level of classical protein kinase C and pruning of climbing fibers from cerebellar Purkinje cells
复制标题

经典蛋白激酶C的表达水平与小脑浦肯野细胞攀爬纤维修剪之间的调节联系

DOI:
10.1111/jnc.14239
复制
发表时间:
2017
影响因子:
4.7
通讯作者:
Hirai Hirokazu
Hirai Hirokazu
中科院分区:
医学2区
文献类型:
--
作者:
Takahashi Nobutaka;Shuvaev Anton N.;Konno Ayumu;Matsuzaki Yasunori;Watanave Masashi;Hirai Hirokazu

文献摘要

参考文献

被引文献

相似文献

小脑浦肯野细胞(PC)表达经典蛋白激酶C(cPKC)亚家族的两个成员,即PKCα和PKCγ。以往对PKCγ基因敲除(KO)小鼠的研究揭示了PKCγ在发育过程中从PC修剪攀爬纤维(CF)中的关键作用。问题仍然是为什么只有PKCγ而不是PKCα参与从PC的CF突触消除。为了解决这个问题,我们使用PC特异性定量真实的时间逆转录聚合酶链反应、蛋白质印迹和免疫组织化学分析评估了野生型(WT)和PKCγ KO PC中PKCγ和PKCα的表达水平。结果表明,PC中绝大多数cPKC为PKCγ,而PKCα仅占极小部分。PKCγ KO PC中PKCα的量未上调。与WT PC相比,PKCγ KO PC中PKCα的慢病毒表达导致PKCγ KO PC中PKCα mRNA的量增加10倍。我们的定量结果显示,PKCγ KO PC中cPKC mRNA的表达水平仅通过PKCα表达而从WT PC中的1%增加到22%。PKCγ KO PC中PKCα的上调显著挽救了受损的CF突触消除。虽然PKCα和PKCγ都能从发育中的PC中修剪多余的CF突触,但这些结果表明,PKCγ KO PC中cPKC的表达水平太低,不能进行CF修剪。
Cerebellar Purkinje cells (PCs) express two members of the classical protein kinase C (cPKC) subfamily, namely, PKCα and PKCγ. Previous studies on PKCγ knockout (KO) mice have revealed a critical role of PKCγ in the pruning of climbing fibers (CFs) from PCs during development. The question remains as to why only PKCγ and not PKCα is involved in CF synapse elimination from PCs. To address this question, we assessed the expression levels of PKCγ and PKCα in wild‐type (WT) and PKCγ KO PCs using PC‐specific quantitative real‐time reverse transcription‐polymerase chain reaction, western blotting, and immunohistochemical analysis. The results revealed that the vast majority of cPKCs in PCs were PKCγ, whereas PKCα accounted for the remaining minimal fraction. The amount of PKCα was not up‐regulated in PKCγ KO PCs. Lentiviral expression of PKCα in PKCγ KO PCs resulted in a 10‐times increase in the amount of PKCα mRNA in the PKCγ KO PCs, compared to that in WT PCs. Our quantification showed that the expression levels of cPKC mRNA in PKCγ KO PCs increased roughly from 1% to 22% of that in WT PCs solely through PKCα expression. The up‐regulation of PKCα in PKCγ KO PCs significantly rescued the impaired CF synapse elimination. Although both PKCα and PKCγ are capable of pruning supernumerary CF synapses from developing PCs, these results suggest that the expression levels of cPKCs in PKCγ KO PCs are too low for CF pruning.
DOI: --
发表时间: 1994-03
期刊: Gene therapy
影响因子: 5.1
作者:
R. Hawley;F. Lieu;A. Fong;T. Hawley
通讯作者: R. Hawley;F. Lieu;A. Fong;T. Hawley
发育中小脑中活动依赖性突触消除
DOI: --
发表时间: 2015
期刊:
影响因子: --
作者:
Hiraoka;K.;Morimoto;Y. V.;Fujii;T.;Miyata;T.;Makino. F.;Minamino;T.;Namba;K.;Kano M.
通讯作者: Kano M.
DOI: 10.1523/jneurosci.5530-10.2011
发表时间: 2011-10
期刊: The Journal of Neuroscience
影响因子: --
作者:
A. Shuvaev;Hajime Horiuchi;T. Seki;H. Goenawan;T. Irie;Akira Iizuka;N. Sakai;H. Hirai
通讯作者: A. Shuvaev;Hajime Horiuchi;T. Seki;H. Goenawan;T. Irie;Akira Iizuka;N. Sakai;H. Hirai
DOI: 10.1080/14734220310016150
发表时间: 2003-01-01
期刊: CEREBELLUM
影响因子: 3.5
作者:
Metzger, F;Kapfhammer, JP
通讯作者: Kapfhammer, JP
大鼠脑中蛋白激酶 C β I 亚种的免疫细胞化学定位。
影响因子: 11.1
作者:
Kohkichi Hosoda;Naoaki Saito;A. Kose;A. Ito;T. Tsujino;K. Ogita;U. Kikkawa;Yoshitaka Ono;Koichi Igarashi;Yasutomi Nishizuka
通讯作者: Yasutomi Nishizuka