Mist1 Expressing Gastric Stem Cells Maintain the Normal and Neoplastic Gastric Epithelium and Are Supported by a Perivascular Stem Cell Niche.
Cancer Cell
; 28(6): 800-814, 2015 Dec 14.
Article
em En
| MEDLINE
| ID: mdl-26585400
ABSTRACT
The regulation and stem cell origin of normal and neoplastic gastric glands are uncertain. Here, we show that Mist1 expression marks quiescent stem cells in the gastric corpus isthmus. Mist1(+) stem cells serve as a cell-of-origin for intestinal-type cancer with the combination of Kras and Apc mutation and for diffuse-type cancer with the loss of E-cadherin. Diffuse-type cancer development is dependent on inflammation mediated by Cxcl12(+) endothelial cells and Cxcr4(+) gastric innate lymphoid cells (ILCs). These cells form the perivascular gastric stem cell niche, and Wnt5a produced from ILCs activates RhoA to inhibit anoikis in the E-cadherin-depleted cells. Targeting Cxcr4, ILCs, or Wnt5a inhibits diffuse-type gastric carcinogenesis, providing targets within the neoplastic gastric stem cell niche.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Neoplasias Gástricas
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Células-Tronco Neoplásicas
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Células Epiteliais
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Fatores de Transcrição Hélice-Alça-Hélice Básicos
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Nicho de Células-Tronco
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Microambiente Tumoral
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Mucosa Gástrica
Idioma:
En
Ano de publicação:
2015
Tipo de documento:
Article