organoid | 类器官 | 培养 | 单细胞测序
示例paper:Retinoic acid signaling drives differentiation toward the absorptive lineage in colorectal cancer - 2021
常见的表型分析:
Alkaline phosphatase/nuclear fast red staining
pink是nuclei,dark blue是enterocyte;
Alcian blue/nuclear fast red staining
light blue是Goblet的分泌物,pink同样是nuclei;
单细胞是必须要做的
- 细胞系没有做单细胞的必要,除非是Perturb-seq;
- 其次就是Patient或Mouse derived Organoid了;
- 最后就是纯in vivo的Mouse,这个周期长门槛高;
重点来讲一下肠道类器官
Hans clever,鼻祖,YT上有ibiology的教学,可以看一看;
Gastrointestinal Organoid Derivation and Culture
L-WRN细胞系:
- Wnt3a - Wnt激活剂,stem cell
- R-spondin3 - 辅助剂,提高Wnt的敏感度
- Noggin - BMP抑制剂,防止分化
ER medium:
- EGF - promoting proliferation
- R-spondin3 - 辅助剂,提高Wnt的敏感度
什么是conditioned media?这里的条件是指引分化的条件。
In the strictest sense, the cell secretome (conditioned media) refers to the collection of proteins that contain a signal peptide and are processed via the endoplasmic reticulum and Golgi apparatus through the classical secretion pathway.
参考: