کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2039524 1073063 2015 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Clonal Dynamics Reveal Two Distinct Populations of Basal Cells in Slow-Turnover Airway Epithelium
ترجمه فارسی عنوان
دینامیک کلونال دو گروه واضح سلول های بنیادی را در اپیتلیوم هواپیما به سرعت کاهش می دهد
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم کشاورزی و بیولوژیک (عمومی)
چکیده انگلیسی


• Clonal analysis for determining homeostatic tracheal epithelial cell hierarchy
• Basal cells comprise two subpopulations: stem cells and luminal precursors
• Luminal secretory cells are short-lived and self-renewing
• Secretory cells are the major steady-state source of new ciliated cells

SummaryEpithelial lineages have been studied at cellular resolution in multiple organs that turn over rapidly. However, many epithelia, including those of the lung, liver, pancreas, and prostate, turn over slowly and may be regulated differently. We investigated the mouse tracheal epithelial lineage at homeostasis by using long-term clonal analysis and mathematical modeling. This pseudostratified epithelium contains basal cells and secretory and multiciliated luminal cells. Our analysis revealed that basal cells are heterogeneous, comprising approximately equal numbers of multipotent stem cells and committed precursors, which persist in the basal layer for 11 days before differentiating to luminal fate. We confirmed the molecular and functional differences within the basal population by using single-cell qRT-PCR and further lineage labeling. Additionally, we show that self-renewal of short-lived secretory cells is a feature of homeostasis. We have thus revealed early luminal commitment of cells that are morphologically indistinguishable from stem cells.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: - Volume 12, Issue 1, 7 July 2015, Pages 90–101
نویسندگان
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