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JoVE Encyclopedia of Experiments
Cancer Research
将原位注射到乳腺脂肪垫中:在小鼠中确定乳腺癌
将原位注射到乳腺脂肪垫中:在小鼠中确定乳腺癌
Encyclopedia of Experiments
Cancer Research
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Encyclopedia of Experiments Cancer Research
Orthotopic Injection into the Mammary Fat Pad: Establishing Breast Cancer in Mice

将原位注射到乳腺脂肪垫中:在小鼠中确定乳腺癌

Protocol
23,592 Views
03:40 min
April 30, 2023
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Please note that some of the translations on this page are AI generated. Click here for the English version.

Transcript

首先,在培养物中建立所需的乳腺癌细胞系。手术前一天,剃掉小鼠的腹部,用脱毛膏去除皮毛,露出腹股沟。手术当天,收集细胞,麻醉小鼠并确认对脚趾捏没有反应。使用镊子捏住周围的皮肤,形成一个隆起的隧道。

然后,用注射器收集的细胞刺穿皮肤。针头应沿着隧道,直到尖端靠近。轻轻地将针尖向上移动到正下方的乳腺脂肪垫中。取下镊子,用针头形成一个皮肤帐篷,然后慢慢注射细胞。

最后,缩回注射器,注意不要打扰周围的圆形凸起。注射的细胞和随后的肿瘤表达荧光素酶,可以使用生物发光成像进行追踪。在示例方案中,我们将展示小鼠原位乳腺癌的建立。手术前一天,手动约束受体小鼠,将动物腹部的一面向上翻转到第四个周围要剃光的毛皮。

用一层薄薄的脱毛膏擦拭毛皮。30 到 60 秒后,用蒸馏水去除乳霜。并用柔软的纸巾擦干鼠标。手术当天,在冰上的无菌微量离心管中将小鼠乳腺癌细胞悬液稀释至每毫升 PBS 浓度的 2 x 10 至第 5 个细胞。

每次注射前,装入一个配备 .45 x 16 针头的 1 毫升注射器,每只小鼠 50 微升细胞。并确认每只镇静动物对脚趾捏无反应。在动物的眼睛上涂抹药膏,用镊子在第一只老鼠的第四个周围的皮肤上搭帐篷,为注射器创造一个隧道。

握住注射器,斜面朝上,在距离5 到 10 毫升的地方皮下进入皮肤,沿着隧道直到针尖几乎到达。- 使用镊子在第一个周围的皮肤上搭帐篷,为注射器创造一个隧道。针头应进入镊子尖端之间,并应向上滑起,而不是压入组织。小心地将针尖向上移动到乳腺脂肪垫中,直到斜面位于下方。

并松开皮肤帐篷,让癌细胞缓慢注射。- 插入后,小心地将针尖向上移动到乳腺脂肪垫中,直到斜面位于下方,并且您感到阻力,以确保将细胞输送到正确的位置。注射完所有细胞后,将针头稍微转向一侧并慢慢缩回注射器。用棉签对针头伤口施加压力 10 到 20 秒,以确保没有液体渗出。

注射的应显示为透明的白色扁平球体,位于中心

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