TY - JOUR
T1 - Opposing Wnt signals regulate cervical squamocolumnar homeostasis and emergence of metaplasia
AU - Chumduri, Cindrilla
AU - Kumar Gurumurthy, Rajendra
AU - Berger, Hilmar
AU - Dietrich, Oliver
AU - Kumar, Naveen
AU - Koster, Stefanie
AU - Brinkmann, Volker
AU - Hoffmann, Kirstin
AU - Drabkina, Marina
AU - Arampatzi, Panagiota
AU - Son, Dajung
AU - Klemm, Uwe
AU - Mollenkopf, Hans-Joachim
AU - Herbst, Hermann
AU - Mangler, Mandy
AU - Vogel, Jörg
AU - Saliba, Antoine-Emmanuel
AU - Meyer, Thomas F
PY - 2021/1/18
Y1 - 2021/1/18
N2 - The transition zones of the squamous and columnar epithelia constitute hotspots for the emergence of cancer, often preceded by metaplasia, in which one epithelial type is replaced by another. It remains unclear how the epithelial spatial organization is maintained and how the transition zone niche is remodelled during metaplasia. Here we used single-cell RNA sequencing to characterize epithelial subpopulations and the underlying stromal compartment of endo- and ectocervix, encompassing the transition zone. Mouse lineage tracing, organoid culture and single-molecule RNA in situ hybridizations revealed that the two epithelia derive from separate cervix-resident lineage-specific stem cell populations regulated by opposing Wnt signals from the stroma. Using a mouse model of cervical metaplasia, we further show that the endocervical stroma undergoes remodelling and increases expression of the Wnt inhibitor Dickkopf-2 (DKK2), promoting the outgrowth of ectocervical stem cells. Our data indicate that homeostasis at the transition zone results from divergent stromal signals, driving the differential proliferation of resident epithelial lineages.
AB - The transition zones of the squamous and columnar epithelia constitute hotspots for the emergence of cancer, often preceded by metaplasia, in which one epithelial type is replaced by another. It remains unclear how the epithelial spatial organization is maintained and how the transition zone niche is remodelled during metaplasia. Here we used single-cell RNA sequencing to characterize epithelial subpopulations and the underlying stromal compartment of endo- and ectocervix, encompassing the transition zone. Mouse lineage tracing, organoid culture and single-molecule RNA in situ hybridizations revealed that the two epithelia derive from separate cervix-resident lineage-specific stem cell populations regulated by opposing Wnt signals from the stroma. Using a mouse model of cervical metaplasia, we further show that the endocervical stroma undergoes remodelling and increases expression of the Wnt inhibitor Dickkopf-2 (DKK2), promoting the outgrowth of ectocervical stem cells. Our data indicate that homeostasis at the transition zone results from divergent stromal signals, driving the differential proliferation of resident epithelial lineages.
UR - http://www.scopus.com/inward/record.url?scp=85100196759&partnerID=8YFLogxK
U2 - 10.1038/s41556-020-00619-0
DO - 10.1038/s41556-020-00619-0
M3 - Journal article
SN - 1465-7392
VL - 23
SP - 184
EP - 197
JO - Nature Cell Biology
JF - Nature Cell Biology
ER -