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The controlled positioning and stoichiometry of aptamers on tetrahedral DNA frameworks enables the synthesis of targeted probes for the capture of circulating tumor cells from blood samples.
FiLa biosensors allow real-time subcellular analysis of lactate metabolism. This protocol describes their preparation and characterization, and their use in in vitro and in vivo assays, under various nutritional and pharmacological conditions.
This protocol describes an efficient method to reconstitute the onset of gametogenesis by co-culturing resetting hPGCLCs with human hindgut organoids, providing a new framework to clarify the physiological and pathological crosstalk between hPGCs and the hindgut.
The identification and quantitative characterization of tau posttranslational modifications in brain tissue using mass spectrometry provide a comprehensive and untargeted approach to profiling pathological tau in neurodegenerative diseases.
RNA-binding proteins orchestrate many aspects of plant development and environmental responses. This protocol describes an optimized plant individual-nucleotide-resolution cross-linking and immunoprecipitation method for genome-wide identification of RNA-binding protein binding sites on their cognate RNAs at single-nucleotide resolution.
This protocol describes a method for sampling the microbiome of food-processing facilities and analyzing it by using whole-metagenome sequencing. The protocol includes sampling and DNA-extraction and DNA-purification steps optimized for low-biomass samples.
A detailed workflow covering 3D pathology, including tissue preparation, imaging with light-sheet fluorescence microscopy, tools for initial data processing in Python (e.g., stitching, intensity leveling and false coloring) and data quality control.
A web-based tool to guide the lead optimization process by improving calculation of substructure modifications of candidate compounds with improved absorption, distribution, metabolism, excretion, and toxicity profiles.
The formation and functional relevance of N6-methyladenosine sites are key unanswered questions in the field of RNA biology. The protocol describes an unbiased sequencing-based method for the characterization of the global distribution and stoichiometry of N6-methyladenosine sites.
Light-activated assembly of split-protein fragment pairs using the covalent SpyTag/SpyCatcher peptide–protein reaction can be used to modulate biological protein activity in solution, biomaterials and cells.
Antigen-specific B cells constitute a small proportion of the total B cell population, making identification for downstream analysis challenging. Here, this is achieved by pairing fluorescent antigen tetramer probes with a sensitive enrichment approach.
A customized hyperspectral confocal microscope enables the tracking of living cells and sensing of cellular processes by characterizing bio-integrated microlasers with high spectral resolution.
Genome-scale metabolic models enable mathematical exploration of metabolism under various defined conditions. This protocol describes GECKO, a method for enhancing a genome-scale metabolic model with enzymatic constraints using kinetic and omics data (e.g., proteomics).
This protocol provides extensive guidelines and detailed steps to generate novel bio-engineered bacterial strains using CRISPR-associated transposase (CAST) systems, with available plasmids and standard molecular biology techniques.
A light sheet fluorescence microscopy approach for the analysis of immune cell composition, vascularization, tissue perfusion and hypoxia enables spatial imaging of the tissue microenvironment in cancer and cardiovascular diseases.
The procedure guides inexperienced users interested in handling spatial omics data in a Python environment to streamline data analysis and to facilitate benchmarking analysis via the spatial omics database.
Mapping of chromatin states at single-cell resolution is still challenging. This protocol describes nano-CT, a novel method to simultaneously characterize up to three epigenetic modalities at single-cell resolution.
In 2023, Nature Protocols launched four new collections (on organoids, neural probes, cognitive neuroscience frameworks and neurostimulation) to help readers navigate our content and highlight areas of particular current interest.