Reprogramming adult Schwann cells to stem cell-like cells by leprosy bacilli promotes dissemination of infection.

Reprogramming adult Schwann cells to stem cell-like cells by leprosy bacilli promotes dissemination of infection.
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DOI:
10.1016/j.cell.2012.12.014
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发表时间:
2013-01-17
期刊:
影响因子:
64.5
通讯作者:
Rambukkana A
Rambukkana A
中科院分区:
生物学1区
文献类型:
--
作者:
Masaki T;Qu J;Cholewa-Waclaw J;Burr K;Raaum R;Rambukkana A

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Differentiated cells possess a remarkable genomic plasticity that can be manipulated to reverse or change developmental commitments. Here, we show that the leprosy bacterium hijacks this property to reprogram adult Schwann cells, its preferred host niche, to a stage of progenitor/stem-like cells (pSLC) of mesenchymal traits by downregulating Schwann cell lineage/differentiation-associated genes and upregulating genes mostly of mesoderm development. Reprogramming accompanies epigenetic changes and rendered infected cells highly plastic, migratory and immunomodulatory. We provide evidence that acquisition of these properties by pSLC promotes bacterial spread by two distinct mechanisms: direct differentiation to mesenchymal tissues, including skeletal and smooth muscles, and by forming granuloma-like structures and subsequently release bacteria-laden macrophages. These findings support a model of host cell reprogramming in which a bacterial pathogen uses the plasticity of its cellular niche for promoting dissemination of infection, and provide an unexpected link between cellular reprogramming and host-pathogen interaction.
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