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A53T alpha-synuclein transgenic mouse

A53T alpha-synuclein expression produces age- or dose-dependent aggregation, synaptic dysfunction and motor deficits; phenotype depends on the transgenic line or AAV vector.

结局指标

以荧光显微镜在脑切片中观察TH阳性胞体与纤维并采集图像;本方案输出为免疫荧光染色与成像结果,不包含体视学细胞计数、纤维密度阈值或纹状体多巴胺浓度测定。

实验动物

脑切片酪氨酸羟化酶(TH)免疫荧光染色
年龄
age as reported in the cited study
组织
substantia nigra and striatum
脑切片酪氨酸羟化酶(TH)免疫荧光染色
年龄
age as reported in the cited study
组织
substantia nigra and striatum

实验步骤

脑切片洗涤 用4% PFA/PBS洗涤脑切片一次。 去除固定液 以轻柔摇动或旋转5分钟,确保彻底去除固定液。 PBS漂洗 用PBS短暂漂洗,去除残留PFA。 封闭液配制 配制含10%驴血清和0.3% Triton-X的PBS封闭液。 封闭 室温下将切片在封闭液中孵育1小时,以减少非特异性结合。 均匀封闭 将切片置于摇床或旋转器上,使切片均匀接触封闭液。 一抗工作液配制 按下列组成配制一抗工作液。 加入鸡抗TH一抗 鸡抗TH抗体(Abcam,货号ab76442)。 稀释一抗 用含2.5%驴血清和0.3% Triton-X的PBS将一抗按1:200稀释。 一抗孵育 切片与一抗在室温孵育1小时。 湿盒孵育 在湿盒中孵育,防止液体蒸发。 一抗后洗涤 用PBS洗涤切片三次,每次5分钟。 轻柔洗涤 洗涤过程中保持轻柔摇动或旋转。 二抗孵育 与针对鸡IgG的荧光偶联二抗按1:1000在室温孵育1小时。 避光 避光以保护荧光。 终末洗涤 用PBS洗涤切片三次,每次5分钟。 避光洗涤 在避光条件下完成洗涤,以维持荧光完整性。 贴片 将切片贴于包被载玻片上。 Mowiol封片 用Mowiol封片介质覆盖切片并加盖玻片。 干燥 避光干燥至少30分钟后再成像。 荧光显微镜成像 使用Leica DM6000 B显微镜和10×物镜观察切片。 选择滤光片 使用合适的荧光滤光片组检测二抗信号。 调整曝光 调整曝光设置以优化信噪比。

模型身份

模型名称
A53T alpha-synuclein transgenic mouse
物种
mouse
基因型/合子状态
human A53T alpha-synuclein transgenic (non-M83 lines)
等位基因
human SNCA A53T

生物学特性

表型出现阶段
Progressive with age or after vector expression; line/vector dependent.
适用研究问题
A53T alpha-synuclein toxicity, aggregation and propagation.
模型局限
This record groups non-M83 A53T studies with different promoters or AAV delivery; it is not a single line. M83 is represented separately by model 30.

实验方法

实验方案

  • 脑切片酪氨酸羟化酶(TH)免疫荧光染色

    脑切片经4% PFA/PBS洗涤、10%驴血清/0.3% Triton-X封闭后,以鸡抗TH抗体ab76442(1:200)和抗鸡IgG荧光二抗(1:1000)孵育,Mowiol封片并以荧光显微镜成像,用于TH阳性胞体与纤维的定位观察。

  • 脑切片酪氨酸羟化酶(TH)免疫荧光染色

    脑切片经4% PFA/PBS洗涤、10%驴血清/0.3% Triton-X封闭后,以鸡抗TH抗体ab76442(1:200)和抗鸡IgG荧光二抗(1:1000)孵育,Mowiol封片并以荧光显微镜成像,用于TH阳性胞体与纤维的定位观察。

配套试剂与材料

参考文献

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  2. Nagy M; Fenton WA; Horwich AL. Neuronal overexpression of Kcnn1 in A53T α-synuclein mice suppresses phospho-serine 129 α-synuclein formation and doubles survival time.. Proceedings of the National Academy of Sciences of the United States of America. 2026. PMID:42616775.
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  4. Marta Graziano, Ioannis Mantas, Konstantinos Meletis. Immunohistochemistry for Tyrosine Hydroxylase (TH) Detection in Brain Sections. protocols.io, v1, 2025-02-20. DOI:10.17504/protocols.io.6qpvr9jwpvmk/v1. Protocol status: Working; License: Creative Commons Attribution License.
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  10. ARRIVE 2.0 官方规范