突触发生
视网膜变性
生物
视网膜
视紫红质
细胞生物学
神经科学
视网膜
变性(医学)
感光细胞
视觉光转导
色素性视网膜炎
病理
医学
生物化学
作者
Yuandong Peng,Ying Hao,Robert M. Petters,Fulton Wong
摘要
In addition to rod photoreceptor loss, many mutations in rod photoreceptor-specific genes cause degeneration of other neuronal types. Identifying mechanisms of cell-cell interactions initiated by rod-specific mutations and affecting other retinal cells is important for understanding the pathogenesis and progression of retinal degeneration. Here we show in animals with rod and cone degeneration due to mutations in the genes encoding rhodopsin and cGMP phosphodiesterase beta-subunit (PDE-beta) respectively, that rod bipolar cells received ectopic synapses from cones in the absence of rods. Thus, synaptic plasticity links certain rod-specific mutations to retina-wide structural alterations that involve different types of neurons.
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