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Single-cell RNA sequencing (scRNA-seq) is a powerful technique for deconvoluting and clustering thousands of otherwise intermingled cells based on their gene expression. Here, we present a complete protocol for the unbiased evaluation of regenerating murine skeletal muscle using scRNA-seq. The skeletal muscle is unique in its cellular composition as being primarily multinucleated muscle cells (myofibers). This protocol focuses on isolating mononuclear cells from muscle for subsequent scRNA-seq analysis and can be modified to assess cell populations in other tissues of interest. For complete details on the use and execution of this protocol, please refer to Liu et al. (2015) and Oprescu et al. (2020).Zinc (Zn2+) plays a vital role in the functioning of the cell. Cells have influx and efflux zinc transporters to regulate the levels of Zn2+ in the cytoplasm and organellar compartments to maintain homeostasis. We present a protocol to measure changes in cellular zinc concentrations using either a low-affinity membrane permeable or a high-affinity membrane impermeable fluorescent dye. Overall, zinc-specific fluorescent indicators using the assay can reliably detect the Zn2+ flux into or out of cultured cells. For complete details on the use and execution of this protocol, please refer to Sanchez et al. (2019).Murine cardiomyocytes undergo proliferation, multinucleation, and polyploidization during the first 3 weeks of postnatal life, resulting in a mixture of diploid and tetraploid cardiomyocytes in the heart. Understanding the molecular differences between diploid and tetraploid cardiomyocytes from these processes has been limited due to lack of unique markers and their heterogenous origins. Here, we apply single-nucleus RNA-sequencing to fluorescence-activated cell sorting-selected diploid and tetraploid cardiomyocytes to characterize their heterogeneity and molecular distinctions. For complete details on the use and execution of this protocol, please refer to Cui et al. (2020).The metabolic activity of cells is interrelated with cell signaling, functions, and fate. Uncontrolled cancer cell proliferation requires metabolic adaptations. KIF18AIN6 Research focusing on understanding the characteristics of cell metabolism is crucial for the development of novel diagnostic and therapeutic strategies. Here, we describe protocols for the ATP profiling of single cancer cells by fluorescence live-cell imaging. In response to distinct metabolic inhibitions, we record individual mitochondrial ATP dynamics using established Förster resonance energy transfer-based genetically encoded fluorescent ATP probes. For complete details on the use and execution of this protocol, please refer to Depaoli et al. (2018).This protocol is a procedure for generating orthotopic isografts using mouse pancreatic cancer organoids. These isografts can be used to track the evolution of pancreatic ductal adenocarcinoma (PDA) from a preinvasive lesion to a metastatic disease and therefore represent a suitable model for identification of determinants of PDA progression. For complete details on the use and execution of this protocol, please refer to Boj et al. (2015) and Filippini et al. (2019).The structure of 5' untranslated regions (5' UTRs) of bacterial mRNAs often determines the fate of the transcripts. Using a dimethyl sulfate mutational profiling with sequencing (DMS-MaPseq) approach, we developed a protocol to generate sequence libraries to determine the base-pairing status of adenines and cytosines in the 5' UTRs of bacterial mRNAs. Our method increases the sequencing depth of the 5' UTRs and allows detection of changes in their structures by sequencing libraries of moderate sizes. For complete details on the use and execution of this protocol, please refer to Ignatov et al. (2020).Isolation of high-quantity and high-quality ventricular cardiomyocytes from adult rats is critical to study heart physiology and pathology and for drug toxicity screening. It remains challenging to produce a high yield of viable cardiomyocytes from rats. Here, we present our modified enzymatic digestion protocol that relies on the Langendorff device to generate large numbers of viable cardiomyocytes consistently. The most critical parts of this protocol are the selection of rat age and digestion time to obtain viable cardiomyocytes. For complete details on the use and execution of this protocol, please refer to Liu et al. (2019) and Qin et al. (2020).WNT signaling is crucial for embryonic development, adult tissue homeostasis, and injury repair. The poor biophysical characteristics of WNTs and their lack of receptor selectivity have hindered their use as research tools or potential therapeutics. We have developed a platform to generate potent, soluble, selective WNT mimetics with drug-like properties for both research and therapeutic applications. To help researchers adapt and expand on this platform, we describe these protocols and key considerations in generating and studying WNT mimetics. For complete details on the use and execution of this protocol, please refer to Chen et al., 2020.Organoids are three-dimensional (3D) constructs generated in stem cell cultures and are thought to mimic tissue and organ development in situ. However, until recently, they often exclusively recapitulated the development of the organ`s parenchyma without the major components of the organ stroma. Here, we describe a protocol to incorporate stromal components, first of all blood vessels, by co-culturing with induced pluripotent stem cell-derived mesodermal progenitor cells. For complete details on the use and execution of this protocol, please refer to Wörsdörfer et al. (2019).Single-cell analysis of tumor-infiltrating lymphocytes obtained before and after preoperative therapy reflects the dynamic interplay of the tumor and immune system during treatment. Here, we present a protocol to implement single-cell analysis of tumor-infiltrating B cells, which were isolated from paired human breast cancers before and after neo-adjuvant chemotherapy. This protocol also facilitates isolation and single-cell analysis of other tumor-infiltrating lymphocytes. For complete information on the generation and use of this protocol, please refer to Lu et al. (2020).
Website: https://www.selleckchem.com/products/vls-1488-kif18a-in-6.html
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