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Letter |
Hierarchically related lineage-restricted fates of multipotent haematopoietic stem cells
Analysis of transplantation of single haematopoietic stem cells in mice defines stable lineage-restricted fates in long-term self-renewing multipotent stem cells, including a class of multipotent stem cells that exclusively replenishes the megakaryocyte/platelet lineage.
- Joana Carrelha
- , Yiran Meng
- & Sten Eirik W. Jacobsen
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Letter |
Microenvironmental reprogramming of thymic epithelial cells to skin multipotent stem cells
The thymus contains thymic epithelial cells (TECs), which form a complex three-dimensional network organized into cortical and medullary compartments. It is shown here that these cells are plastic. Clonogenic TECs can acquire new properties when exposed to the skin microenvironment; under such conditions, they can permanently adopt the fate of hair follicle multipotent stem cells. Hence, microenvironmental cues can be sufficient to re-direct epithelial cell fate.
- Paola Bonfanti
- , Stéphanie Claudinot
- & Yann Barrandon
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Letter |
IL25 elicits a multipotent progenitor cell population that promotes TH2 cytokine responses
Several non-haematopoietic-cell-derived cytokines, including interleukin (IL)25, have been implicated in inducing T helper 2 (TH2) cell-dependent inflammation, but their precise role has been unclear. Here, IL25 is shown to promote the accumulation of multipotent progenitor cells in gut-associated lymphoid tissue. These cells can give rise to macrophage or granulocyte lineages that promote the differentiation of TH2 cells and contribute to protective immunity against helminth infections.
- Steven A. Saenz
- , Mark C. Siracusa
- & David Artis