کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10956763 | 1099446 | 2006 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Aberrant dendritic branching and sensory inputs in the superficial dorsal horn of mice lacking CaMKIIα autophosphorylation
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
بیولوژی سلول
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چکیده انگلیسی
Superficial dorsal horn neurones undergo marked structural and functional activity-dependent development during the early postnatal period, but little is known about the molecular mechanisms underlying these changes. Calcium signalling, through activation and autophosphorylation of CaMKII, has been shown to play a major role in the maturation of neuronal morphology and connectivity in the cortex. Here, we show that the normal structural and functional development of superficial dorsal horn neurones requires CaMKII autophosphorylation at the Thr286 residue. The dendritic branching of neurones from mice containing a point mutation at this site (T286A) was significantly increased compared with wild-type littermates. This was accompanied by significant increases in receptive field size, recorded from intact preparations. Whole-cell patch clamp recordings of superficial dorsal horn slices revealed a selective deficit in low-threshold A fibre-evoked synaptic input. These results show that CaMKII autophosphorylation is required for the normal development of spinal sensory circuits.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Molecular and Cellular Neuroscience - Volume 33, Issue 1, September 2006, Pages 88-95
Journal: Molecular and Cellular Neuroscience - Volume 33, Issue 1, September 2006, Pages 88-95
نویسندگان
Damian Pattinson, Mark Baccei, Ragnhildur Karadottir, Carole Torsney, Andrew Moss, Jaime McCutcheon, K. Peter Giese, Maria Fitzgerald,