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JoVE Encyclopedia of Experiments
Cancer Research
前列腺类器官测定:一种基于基质凝胶环的离体培养技术,用于研究前列腺上皮细胞的分化能力
前列腺类器官测定:一种基于基质凝胶环的离体培养技术,用于研究前列腺上皮细胞的分化能力
Encyclopedia of Experiments
Cancer Research
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Encyclopedia of Experiments Cancer Research
Prostate Organoid Assay: A Matrix Gel Ring-based Ex Vivo Culture Technique to Study the Differentiation Capacity of Prostate Epithelial Cells

前列腺类器官测定:一种基于基质凝胶环的离体培养技术,用于研究前列腺上皮细胞的分化能力

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04:16 min
July 8, 2025
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Transcript

前列腺上皮主要包括基底上皮细胞和管腔上皮细胞。单层基底细胞形成腺体的外层并支持管腔细胞存活。相反,管腔细胞排列在管腔上并分泌前列腺特异性蛋白质。

要研究离体前列腺上皮分化,首先悬浮基底前列腺上皮细胞。将悬浮液与冷却的基底膜基质以所需比例混合。将这种混合物移液到细胞驱虫剂培养板内壁底部旁边。旋转混合物的板,使其沿孔的圆周形成一个环。

孵

育板以使基质凝固。用首选培养基补充培养物。培养基中的生长因子支持基底上皮细胞的增殖。同时,培养皿的细胞驱避性质可防止任何细胞附着,鼓励细胞在基质内形成 3D 球体。

随着时间的推移,球体会形成与多层上皮接壤的管腔。管腔内衬基底上皮细胞最终分化并形成分泌管腔细胞,产生 3D 腺体结构。

按照

文本方案中所述,从制备小鼠基底和管腔前列腺上皮细胞开始此过程。在500微升小鼠类器官培养基中洗涤细胞沉淀。然后,以每微升 1,000 个细胞的细胞密度重悬沉淀。要制备预混液,请将悬浮在小鼠类器官培养基中的上皮细胞与基质凝胶混合,以生成含有 25% 培养基细胞和 75% 基质凝胶的最终混合物。根据下游应用,基底细胞通常以每 80 微升 100 至 2,000 个细胞的浓度接种,而管腔细胞的接种浓度为每 80 微升 2,000 至 10,000 个细胞。

对于每种细胞混合物,每孔 24 孔板添加 80 微升基质凝胶。将液滴移液到孔壁的下半部分,同时避免直接接触聚 HEMA 涂层。加入基质凝胶后,旋转板,使基质凝胶细胞混合物在孔边缘周围形成一个环。将 24 孔板放入 37 摄氏度的 5% CO2 培养箱中,正面朝上,放置 10 分钟,以使基质凝胶部分硬化。

孵育10分钟后,将24孔板倒置并再孵育50分钟,使基质凝胶完全硬化。然后,将 350 微升预热的小鼠类器官培养基滴滴到每个孔的中心。添加培养基后,将 24 孔板放回培养箱中。

要补充小鼠类器官培养基,请将 24 孔板倾斜 45 度角,并使用 P1000 移液器轻轻地从每个孔的中心去除现有培养基,同时避开基质凝胶环。像以前一样加入350微升预热的小鼠类器官培养基。建议在培养超过五天的类器官中添加大量培养基,以防止关键营养素和生长因子快速耗尽。

Key Terms and Definitions

  • Prostate Epithelium - Consists of basal and luminal cells forming the prostate gland's structure.
  • Basal Cells - Cells forming the outer lining of the prostate epithelium.
  • Luminal Cells - Cells lining the lumen of the prostate gland and secreting prostate-specific proteins.
  • 3D Spheroids - Cell structures formed in a cell-repellent environment.
  • Organoid Assay - A method to study cell differentiation and formation of 3D glandular structures ex vivo.

Scientific Background

  • Introduction to Prostate Epithelium - It is formed of basal and luminal cells (e.g., prostate epithelial cells).
  • Outline of Cellular Components - Basal cells support luminal cell survival; luminal cells line the lumen (e.g., organoid assay).
  • Explanation of 3D Spheroids Formation - Grown within a matrix in a cell-repellent environment.
  • Connection to Experiment - Formation of luminal cells from basal cells in 3D glandular structures.

Questions that this video will help you answer

  • What are prostate epithelial cells and their role in the prostate epithelium?
  • How does the organoid assay contribute to the study of prostatic epithelial differentiation?
  • What is the process of 3D spheroids formation in a cell-repellent environment?

Applications and Relevance

  • Practical Applications - Used to study cell differentiation and formation of glandular structures ex vivo (e.g., organoid assay).
  • Industry Impact - Crucial for biomedical research and development in urology (e.g., prostate health).
  • Societal Importance - Contributes to better understanding and treatment of prostate diseases (e.g., prostate cancer).
  • Scientific Advancements - Enabled the study of prostate cell proliferation and differentiation.

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