Stem-cell research

  • Article |

    In a rat model of short bowel syndrome, transplantation of small intestinal organoids into the colon partially restores intestinal function and improves survival—a proof of principle that organoid transplantation might have therapeutic benefit.

    • Shinya Sugimoto
    • , Eiji Kobayashi
    •  & Toshiro Sato
  • Article |

    Whole-exome sequencing of colon organoids derived from patients with ulcerative colitis identifies somatic mutations in components of the IL-17 signalling pathway, which may confer a growth advantage to cells under inflammatory conditions.

    • Kosaku Nanki
    • , Masayuki Fujii
    •  & Toshiro Sato
  • Article |

    MLLT3 is identified as a crucial regulator of the self-renewal of human haematopoietic stem cells, and helps to maintain an active chromatin state in haematopoietic stem-cell regulatory genes during culture.

    • Vincenzo Calvanese
    • , Andrew T. Nguyen
    •  & Hanna K. A. Mikkola
  • Letter |

    A tissue culture system that provides an increasing intensity of electromechanical stimulation over time enables an in vitro model of cardiac tissue derived from human induced pluripotent stem cells to develop many of the characteristics of adult cardiac tissue.

    • Kacey Ronaldson-Bouchard
    • , Stephen P. Ma
    •  & Gordana Vunjak-Novakovic
  • Letter |

    The Haplobank contains over 100,000 individually reversibly mutagenized, barcoded, mouse embryonic cell lines; proof-of-principle experiments were used to search for genes that are required for rhinovirus infection and angiogenesis using forward and reverse genetic screens, respectively.

    • Ulrich Elling
    • , Reiner A. Wimmer
    •  & Josef M. Penninger
  • Article |

    The authors reprogram in vitro endothelial cells from adult mice into engraftable haematopoietic stem cells that display single-cell and multilineage properties, are capable of long-term self-renewal and can reconstitute T cell adaptive immune function.

    • Raphael Lis
    • , Charles C. Karrasch
    •  & Shahin Rafii
  • Letter |

    Regeneration of the heart muscle after myocardial infarction with cardiomyocytes derived from human embryonic stem cells is demonstrated in non-human primates, with the grafts showing evidence of electromechanical coupling, although they were also associated with non-fatal arrhythmias.

    • James J. H. Chong
    • , Xiulan Yang
    •  & Charles E. Murry
  • Letter |

    Here, using two-photon phosphorescence lifetime microscopy, the local oxygen tension in the bone marrow of live mice is found to be quite low, with spatiotemporal variations depending on the blood vessel type, distance to the endosteum, and changes in cellularity after stress.

    • Joel A. Spencer
    • , Francesca Ferraro
    •  & Charles P. Lin
  • Article |

    Immunofluorescence imaging and computational modelling are used to study the spatial distribution of different cell types within the haematopoietic stem cell (HSC) niche; findings show that quiescent HSCs associate specifically with small arterioles that are preferentially found in the endosteal bone marrow and are essential in maintaining this quiescence.

    • Yuya Kunisaki
    • , Ingmar Bruns
    •  & Paul S. Frenette
  • Letter |

    Realizing the full potential of human embryonic stem cells (hESCs) in research and clinical applications requires a detailed understanding of the genetic network that governs their unique properties. A genome-wide RNA interference screen identifies a wealth of new regulators of self-renewal and pluripotency properties in hESCs. The transcription factor PRDM14, for example, is required for the maintenance of hESC identity and reprogramming of somatic cells to pluripotency.

    • Na-Yu Chia
    • , Yun-Shen Chan
    •  & Huck-Hui Ng