TY - JOUR
T1 - Notch ligand Dll1 mediates cross-talk between mammary stem cells and the macrophageal niche
AU - Chakrabarti, Rumela
AU - Celià-Terrassa, Toni
AU - Kumar, Sushil
AU - Hang, Xiang
AU - Wei, Yong
AU - Choudhury, Abrar
AU - Hwang, Julie
AU - Peng, Jia
AU - Nixon, Briana
AU - Grady, John J.
AU - DeCoste, Christina
AU - Gao, Jie
AU - van Es, Johan H.
AU - Li, Ming O.
AU - Aifantis, Iannis
AU - Clevers, Hans
AU - Kang, Yibin
N1 - Publisher Copyright:
© 2017 The Authors.
PY - 2018/6/29
Y1 - 2018/6/29
N2 - The stem cell niche is a specialized environment that dictates stem cell function during development and homeostasis. We show that Dll1, a Notch pathway ligand, is enriched in mammary gland stem cells (MaSCs) and mediates critical interactions with stromal macrophages in the surrounding niche in mouse models. Conditional deletion of Dll1 reduced the number of MaSCs and impaired ductal morphogenesis in the mammary gland. Moreover, MaSC-expressed Dll1 activates Notch signaling in stromal macrophages, increasing their expression of Wnt family ligands such as Wnt3, Wnt10A, and Wnt16, thereby initiating a feedback loop that promotes the function of Dll1-expressing MaSCs. Together, these findings reveal functionally important cross-talk between MaSCs and their macrophageal niche through Dll1-mediated Notch signaling.
AB - The stem cell niche is a specialized environment that dictates stem cell function during development and homeostasis. We show that Dll1, a Notch pathway ligand, is enriched in mammary gland stem cells (MaSCs) and mediates critical interactions with stromal macrophages in the surrounding niche in mouse models. Conditional deletion of Dll1 reduced the number of MaSCs and impaired ductal morphogenesis in the mammary gland. Moreover, MaSC-expressed Dll1 activates Notch signaling in stromal macrophages, increasing their expression of Wnt family ligands such as Wnt3, Wnt10A, and Wnt16, thereby initiating a feedback loop that promotes the function of Dll1-expressing MaSCs. Together, these findings reveal functionally important cross-talk between MaSCs and their macrophageal niche through Dll1-mediated Notch signaling.
UR - http://www.scopus.com/inward/record.url?scp=85047263264&partnerID=8YFLogxK
U2 - 10.1126/science.aan4153
DO - 10.1126/science.aan4153
M3 - Article
C2 - 29773667
AN - SCOPUS:85047263264
SN - 0036-8075
VL - 360
JO - Science
JF - Science
IS - 6396
M1 - eaan4153
ER -