rTg4510
以tau病理及神经退变为主要观察对象,tau表达具有时间调控特征。
Study design
重复训练后移除平台进行探测,比较训练过程中的学习曲线及探测试验的目标象限偏好。
Randomisation
每日从 N、S、E、W 四个方位下水,起始方位在动物和训练日之间随机排列。
Blinding
实验操作与数据分析对分组设盲。
Outcome measures
训练期逃避潜伏期、路径长度和游泳速度;探测期目标象限停留时间及搜索路径。
Experimental animals
- Age
- 2.5月龄
- Sex
- Mixed
- Tissue
- 活体小鼠;F1 FVB/N×129S6及另行比较的rTg4510B6背景
- Age
- 2.5月龄
- Sex
- Mixed
- Tissue
- 活体小鼠;F1 FVB/N×129S6及另行比较的rTg4510B6背景
Experimental procedures
训练试次 每天从 N、S、E、W 四个象限边缘的 4 个不同起始位置释放每只小鼠。每次给予至多 100 s 寻找隐蔽平台;到达平台后停留 15 s。若小鼠在 100 s 内未找到平台,引导其到平台并停留 15 s。试次间将小鼠放回铺有干燥垫料的暂养笼,间隔 15–30 min。动物之间及不同训练日的起始位置应随机排列,避免形成固定位置策略。 无平台探测试次 每个工作周结束时移除隐蔽平台,从原平台相对象限释放小鼠,自由游泳 100 s。使用 EthoVision 记录搜索路径。对目标象限的偏好反映空间记忆巩固。 数据分析 使用 EthoVision 自动计算路径长度(cm)、游泳速度(cm/s)及各区域或象限停留时间。分析训练日之间的逃避潜伏期和路径长度,形成学习曲线;探测试验比较目标象限与其他象限的停留时间,并采用适合研究设计的统计检验。WT 小鼠的逃避潜伏期应随训练逐渐下降,探测试验对目标象限的偏好应达到 >25% 停留时间。KO 小鼠若存在空间学习障碍,可表现为逃避潜伏期延长或缺少象限偏好。
Model identity
- Model name
- rTg4510
- Species
- mouse
- Strain
- rTg4510
- Genetic background
- 原始rTg4510为F1 FVB/N×129S6背景;rTg4510B6为原研另行比较的F1 FVB/N×C57BL/6N背景变体。
- Genotype / zygosity
- TRE驱动的人MAPT(P301L)应答转基因与CaMKIIα-tTA激活转基因组合,在前脑表达可调控的人突变tau。
Biological characteristics
- Research questions
- 研究tau表达、tau相关病变与神经退变之间的时间关系,以及抑制tau表达的阶段性影响。
- Limitations
- 模型本身缺少Aβ病理成分,主要适用于tau相关机制,不能单独覆盖淀粉样病理问题。
Experimental methods
Experimental protocols
- 小鼠 Morris 水迷宫空间学习与记忆测定
Assess spatial learning and memory in adult mice using hidden-platform training and platform-free probe trials, with escape latency, path length, swim velocity and target-quadrant time as readouts.
- 小鼠 Morris 水迷宫空间学习与记忆测定
Assess spatial learning and memory in adult mice using hidden-platform training and platform-free probe trials, with escape latency, path length, swim velocity and target-quadrant time as readouts.
Reagents and materials
- ACUSOL OP301 遮光剂
水体遮光
- ACUSOL OP301 遮光剂
水体遮光
References
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- Sarah van Veen; Zsuzsanna Callaerts-Végh. Morris Water Maze: Spatial Learning and Memory Assessment in Mice. protocols.io, version 1, 2026-04-28. DOI:10.17504/protocols.io.5jyl84zk7g2w/v1.
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- ARRIVE 2.0 guidelines