发布: 2020年10月05日第10卷第19期 DOI: 10.21769/BioProtoc.3775 浏览次数: 3762
评审: Tomohiro MizutaniShinya SugimotoJiamin Chen
Abstract
In this protocol, we describe our methods to isolate crypts from patients' biopsy samples and to culture human intestinal stem cells as it’s called “organoid.” Beyond that, we describe how to dissociate organoids cells into single cells for single-cell analysis as a further application. This protocol should provide investigators sufficient tools to generate human organoids from biopsy samples and to accomplish a stable in-vitro assay system.
Keywords: Organoid (类器官)Background
The intestinal epithelium is a multifunctional tissue that orchestrates homeostasis and forms a physical barrier. Each intestinal epithelial cells (IECs) arising from intestinal stem cells (ISCs) renew this epithelium every 4-5 days (Crosnier et al., 2006). ISCs are located at the bottom of the crypts and express specific markers as previously reported by various papers (Muñozet al., 2012; Clevers, 2013). Studies suggested that malfunctions of proper renewals of stem cells are related to intestinal disorders, and understandings of ISCs dynamic may elucidate the pathogenesis of various disorders including Inflammatory Bowel Disease (IBD) (Okamoto et al., 2016).
However, the studies of intestinal stem cell properties had been challenging due to the lack of efficient models that recapitulates physiological intestinal epithelial layers. The epic introduction of “organoid" has overcome various obstacles (Sato et al., 2009 and 2011). Organoids can be established from a single ISC in vitro, and faithfully retain the physiological and pathological features of their tissue of origin (Middendorp et al., 2014). Organoids have been used to dissect underlying pathologic changes in various gastrointestinal disease (Fatehullah et al., 2016; Noben et al., 2017) and has shown potentials to reflect complexed mechanisms of organs.
Also, recent advances in molecular biology techniques allow us to study single-cell modalities (Stuart and Satija, 2019). These techniques developed to have insights into each single cell diversities yet had known to be homogenous populations. Studies have shown that a heterogeneous group of cells share these ISC properties, and constitute a hierarchy within the ISC population (Smith et al., 2016). Furthermore, organoids can be one of the ideal tools that are consist of mostly stem cells and transit-amplifying cells under the undifferentiated culture. In the previous report, a single-cell analysis displayed this heterogeneity among the mouse small intestinal stem cells (Li et al., 2014). Combining organoid culture technique and single-cell analysis has the potential to open a new horizon toward the understandings of the dynamics of human intestinal stem cells. In this protocol, we describe in detail the work-flow of human intestinal organoids establishment and dissociation into single cells for further various applications. Compared to those protocols using scRNA-seq (Biton et al., 2014), the present protocol using multiplex PCR enables acquiring single cell profiles in a low-cost, short-time basis, while the number of cells and genes will be limited by the capacity of the microfluid chip format.
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文章信息
版权信息
© 2020 The Authors; exclusive licensee Bio-protocol LLC.
如何引用
Suzuki, K. and Okamoto, R. (2020). Fluidigm Based Single-cell Gene Expression Library Preparation from Patient-derived Small Intestinal Organoids. Bio-protocol 10(19): e3775. DOI: 10.21769/BioProtoc.3775.
分类
干细胞 > 成体干细胞 > 肠道干细胞
细胞生物学 > 基于细胞的分析方法 > 基因表达
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