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JoVE Encyclopedia of Experiments
Cancer Research
原位同种移植物肿瘤移植:一种生成胰腺肿瘤小鼠模型的技术
原位同种移植物肿瘤移植:一种生成胰腺肿瘤小鼠模型的技术
Encyclopedia of Experiments
Cancer Research
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Encyclopedia of Experiments Cancer Research
Orthotopic Homograft Tumor Transplantation: A Technique to Generate Pancreatic Tumor Mouse Models

原位同种移植物肿瘤移植:一种生成胰腺肿瘤小鼠模型的技术

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03:59 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

- 在原位同源移植物肿瘤移植过程中,来自癌性供体的肿瘤细胞或肿瘤片段在与肿瘤组织型匹配的器官或部位被移植到属于同一物种的受体中。首先取一只携带肿瘤的麻醉供体小鼠,其中包含胰腺来源的细胞。对该区域进行消毒并通过手术采集肿瘤。清洗组织以去除血液并将其切成碎片。接下来,将麻醉的受体小鼠置于右侧位置并对其腹部区域进行消毒。手术暴露脾脏。

接下来,从脾脏下方轻轻拉出一部分胰腺。将肿瘤碎片放在胰腺上并将它们缝合在一起。关闭腹部,让老鼠在笼子里恢复。每天监测受体小鼠以观察原位胰腺肿瘤的生长。在下面的方案中,我们将展示胰腺导管腺癌同源移植物从 C57 黑色 6 供体小鼠到 C57 黑色 6 受体小鼠胰腺的原位移植。

- 使用天平监测 C57 black 6 小鼠的体重。此外,通过卡尺测量监测荷瘤供体小鼠的肿瘤体积。按照方案在生物危害罩中对动物实施安乐死后,使用碘伏拭子对肿瘤周围的皮肤进行消毒。按照文本方案中的详细说明手术切除肿瘤后,将肿瘤放入含有 20 毫升 PBS 的培养皿中,该培养皿已预冷至 4 摄氏度。如果有污染的血液,将肿瘤转移到另一个培养皿中,并用 PBS 洗涤肿瘤。

将肿瘤切成两半。去除任何多余的皮肤、血管、钙化和/或坏死。仅选择完整的肿瘤块,并将它们放入无菌的 50 毫升离心管中。在将试管运输到单独的动物室进行药理学研究之前,加入 20 毫升 PBS。为了准备原位植入,将完全麻醉的鼠标固定在实验板上的右侧位置。用碘消毒脾脏周围的皮肤,然后用 75% 的乙醇脱碘。

找到脾的中间点,在腹部做一个 1 厘米的垂直切口,露出脾脏。使用平尖镊子轻轻拉出脾脏下的一部分胰腺组织,并通过 9-0 可吸收手术缝合线将小鼠同种移植肿瘤片从种子小鼠缝合到受体小鼠的胰腺上。用双缝 6-0 丝缝合合腹部。通过压缩实现体内平衡。

完成肿瘤植入后,只要不发生出血或肿瘤组织渗漏,就将动物放在温暖的笼子里。监测动物,直到它们恢复足够的意识以维持胸骨卧位。从麻醉中完全恢复后,将动物送回动物房。通过触诊脾脏附近的腹部来监测荷瘤小鼠,并挑选出携带原位肿瘤的小鼠。

Key Terms and Definitions

  • Orthotopic Homograft Transplantation - Procedure of transplanting tumor cells from a donor to a same species recipient at a corresponding organ.
  • Pancreatic Cancer Homograft Models - Scientific models used for studying pancreatic cancer by transplanting tumor homografts.
  • Orthotopic - Refers to the transplantation of cells or tissues into their natural site of occurrence in the body.
  • Tumor Homograft Models - Research models involving the transplantation of tumor tissues between same-species subjects.
  • Mouse Cancer Models - Laboratory mice bred or genetically engineered for use in cancer research.

Scientific Background

  • Introduce Orthotopic Homograft Transplantation – This procedure involves transplanting tumor cells from a donor to a same species recipient (e.g., mouse tumor).
  • Key Concepts – Pancreatic Cancer Homograft Models allow us to study pancreas cancer progression (e.g., tumor mouse models).
  • Underlying Mechanisms – Transplantation is done at matching organ site for accurate reflection of cancer progression.
  • Connect to Experiment – The procedure mentioned is used to establish a mouse model for studying pancreatic cancer progress.

Questions that this video will help you answer

[Question 1] What is Orthotopic Homograft Transplantation and how is it linked to mouse tumor models? [Question 2] How do Pancreatic Cancer Homograft Models help in studying pancreatic cancer? [Question 3] What is the significance of the orthotopic site in tumor transplantation?

Applications and Relevance

  • Practical Applications – Allows for accurate representation of cancer progression enhancing research (e.g., tumor mouse model).
  • Industry Impact – Impact on medical and biotechnological sectors (e.g., healthcare).
  • Societal Importance – Enhances understanding of cancer which could lead to better treatments (e.g., health).
  • Link to Scientific Advancements – Establishes a platform for scientific research and innovations in cancer treatment.

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