2月24日,浙江大学团队在《神经元》(Neuron)发表论文Endogenous retrovirus-derived RNA-DNA hybrids induce microglial synaptic pruning in autism models,报告他们发现内源性逆转录病毒(ERV,一类特殊的逆转座序列,在基因组中拥有大量序列相似的拷贝)衍生的RNA-DNA杂交体诱导自闭症模型中的小胶质细胞突触修剪。研究团队使用已被美国FDA批准用于治疗HIV感染的逆转录酶抑制剂进行早期干预,能够显著抑制ERV的逆转录活性,从源头上减少RNA-DNA杂交体的形成,进而降低补体分子的C4b表达、减轻小胶质细胞的过度修剪,最终挽救小鼠的自闭症核心症状。
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