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A high-fidelity variant of Streptococcus pyogenes CRISPR–Cas9 is reported that lacks detectable off-target events as assessed by genome-wide break capture and targeted sequencing methods.
HIFα transcription factors are highly expressed in cancer stem cells from glioma; DYRK1 kinases inhibit the protein ID2 to modulate the level of HIF2α and the tumorigenic properties of glioblastoma-associated cancer stem cells.
Two-photon calcium imaging reveals that the mouse retina contains more than 30 functionally distinct retinal ganglion cells, including some that have not been described before, exceeding current estimates and suggesting that the functional diversity of retinal ganglion cells may be much larger than previously thought.
The regenerative properties of muscle stem cells decline with age as the stem cells enter an irreversible state of senescence; a study of mouse muscle stem cells reveals that entry into senescence is an autophagy-dependent process and promoting autophagy in old satellite cells can reverse senescence and restore their regenerative properties in an injury model.
