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Single-cell sequencing of uncultivated microbial species is rapidly providing a wealth of new information. Here, the authors provide an update on recent progress in capturing novel genomes, large-scale environmental studies and research relating to human health, as well as recent methodological improvements and remaining technical challenges.
Mutagenic processes leave characteristic imprints on the cancer genome that can help to identify the underlying DNA damaging components as well as DNA repair and replicative pathways that are active or disrupted. This Review discusses these mutational signatures according to different classes of mutations and summarizes how different components contribute mechanistically to produce each signature type.
This Review discusses the main experimental approaches for microRNA (miRNA) target identification, as well as the modulators and the consequences of miRNA–target interactions. It also highlights the role of computational modelling in furthering the conceptual understanding of miRNA functions in gene regulatory networks.
DNA and histone modifications undergo extensive reprogramming to reset the epigenomic state between generations. This Review discusses the mechanisms and consequences of epigenetic reprogramming during plant sexual reproduction. Despite various similarities to the equivalent process in mammals, a key difference is the seemingly incomplete reprogramming of plant epigenomes, which has implications for evolution and transgenerational epigenetic inheritance.
Understanding disease pathogenesis and developing potential therapies require accurate and genetically tractable models. This Review discusses how human stem cells — including embryonic stem cells, adult stem cells and induced pluripotent stem cells — can provide informative models of diverse human diseases. Such methods can also be extended through gene editing, co-culture or infectious agent approaches.
