Abstract:
:The mammary gland undergoes cycles of growth and regeneration throughout reproductive life, a process that requires mammary stem cells (MaSCs). Whilst recent genetic fate-mapping studies using lineage-specific promoters have provided valuable insights into the mammary epithelial hierarchy, the true differentiation potential of adult MaSCs remains unclear. To address this, herein we utilize a stochastic genetic-labelling strategy to indelibly mark a single cell and its progeny in situ, combined with tissue clearing and 3D imaging. Using this approach, clones arising from a single parent cell could be visualized in their entirety. We reveal that clonal progeny contribute exclusively to either luminal or basal lineages and are distributed sporadically to branching ducts or alveoli. Quantitative analyses suggest that pools of unipotent stem/progenitor cells contribute to adult mammary gland development. Our results highlight the utility of tracing a single cell and reveal that progeny of a single proliferative MaSC/progenitor are dispersed throughout the epithelium.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Davis FM,Lloyd-Lewis B,Harris OB,Kozar S,Winton DJ,Muresan L,Watson CJdoi
10.1038/ncomms13053subject
Has Abstractpub_date
2016-10-25 00:00:00pages
13053issn
2041-1723pii
ncomms13053journal_volume
7pub_type
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