Pseudotemporal Ordering of Single Cells Reveals Metabolic Control of Postnatal β Cell Proliferation.

Pseudotemporal Ordering of Single Cells Reveals Metabolic Control of Postnatal β Cell Proliferation.
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DOI:
10.1016/j.cmet.2017.04.014
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发表时间:
2017-05-02
期刊:
影响因子:
29
通讯作者:
Sander M
Sander M
中科院分区:
生物学1区
文献类型:
--
作者:
Zeng C;Mulas F;Sui Y;Guan T;Miller N;Tan Y;Liu F;Jin W;Carrano AC;Huising MO;Shirihai OS;Yeo GW;Sander M

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Pancreatic beta-cell mass for appropriate blood glucose control is established during early postnatal life. Beta-cell proliferative capacity declines postnatally but the extrinsic cues and intracellular signals that cause this decline remain unknown. To obtain a high-resolution map of beta-cell transcriptome dynamics after birth, we generated single-cell RNA-seq data of beta-cells from multiple postnatal time points and ordered cells based on transcriptional similarity using a new analytical tool. This analysis captured signatures of immature, proliferative beta-cells and established high expression of amino acid metabolic, mitochondrial, and Srf/Jun/Fos transcription factor genes as their hallmark feature. Experimental validation revealed high metabolic activity in immature beta-cells and a role for reactive oxygen species and Srf/Jun/Fos transcription factors in driving postnatal beta-cell proliferation and mass expansion. Our work provides the first high-resolution molecular characterization of state changes in postnatal beta-cells and paves the way for the identification of novel therapeutic targets to stimulate beta-cell regeneration.
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