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Article: Myometrial cells stimulate self-renewal of endometrial mesenchymal stem-like cells through WNT5A/β-catenin signaling

TitleMyometrial cells stimulate self-renewal of endometrial mesenchymal stem-like cells through WNT5A/β-catenin signaling
Authors
KeywordsCell signaling
Cell biology
Stem cell-microenvironment interactions
Stromal cells
Issue Date2019
PublisherAlphaMed Press, published in association with Wiley. The Journal's web site is located at http://www.stemcells.com
Citation
Stem Cells, 2019, v. 37 n. 11, p. 1455-1466 How to Cite?
AbstractHuman endometrium undergoes cycles of proliferation and differentiation throughout the reproductive years of women. The endometrial stem/progenitor cells contribute to this regenerative process. They lie in the basalis layer of the endometrium next to the myometrium. We hypothesized that human myometrial cells provide niche signals regulating the activities of endometrial mesenchymal stem‐like cells (eMSCs). In vitro coculture of myometrial cells enhanced the colony‐forming and self‐renewal ability of eMSCs. The cocultured eMSCs retained their multipotent characteristic and exhibited a greater total cell output when compared with medium alone culture. The expression of active β‐catenin in eMSCs increased significantly after coculture with myometrial cells, suggesting activation of WNT/β‐catenin signaling. Secretory factors in spent medium from myometrial cell culture produced the same stimulatory effects on eMSCs. The involvement of WNT/β‐catenin signaling in self‐renewal of eMSCs was confirmed with the use of WNT activator (Wnt3A conditioned medium) and WNT inhibitors (XAV939 and inhibitor of Wnt Production‐2 [IWP‐2]). The myometrial cells expressed more WNT5A than other WNT ligands. Recombinant WNT5A stimulated whereas anti‐WNT5A antibody suppressed the colony formation, self‐renewal, and T‐cell factor/lymphoid enhancer‐binding factor (TCF/LEF) transcriptional activities of eMSCs. Moreover, eMSCs expressed FZD4 and LRP5. WNT5A is known to activate the canonical WNT signaling in the presence of these receptor components. WNT antagonist, DKK1, binds to LRP5/6. Consistently, DKK1 treatment nullified the stimulatory effect of myometrial cell coculture. In conclusion, our findings show that the myometrial cells are niche components of eMSCs, modulating the self‐renewal activity of eMSCs by WNT5A‐dependent activation of WNT/β‐catenin signaling.
Persistent Identifierhttp://hdl.handle.net/10722/286393
ISSN
2020 Impact Factor: 6.277
2020 SCImago Journal Rankings: 2.159
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorCao, M-
dc.contributor.authorChan, RWS-
dc.contributor.authorCheng, FHC-
dc.contributor.authorLi, J-
dc.contributor.authorLi, T-
dc.contributor.authorPang, RTK-
dc.contributor.authorLee, CL-
dc.contributor.authorLi, RHW-
dc.contributor.authorNg, EHY-
dc.contributor.authorChiu, PCN-
dc.contributor.authorYeung, WSB-
dc.date.accessioned2020-08-31T07:03:13Z-
dc.date.available2020-08-31T07:03:13Z-
dc.date.issued2019-
dc.identifier.citationStem Cells, 2019, v. 37 n. 11, p. 1455-1466-
dc.identifier.issn1066-5099-
dc.identifier.urihttp://hdl.handle.net/10722/286393-
dc.description.abstractHuman endometrium undergoes cycles of proliferation and differentiation throughout the reproductive years of women. The endometrial stem/progenitor cells contribute to this regenerative process. They lie in the basalis layer of the endometrium next to the myometrium. We hypothesized that human myometrial cells provide niche signals regulating the activities of endometrial mesenchymal stem‐like cells (eMSCs). In vitro coculture of myometrial cells enhanced the colony‐forming and self‐renewal ability of eMSCs. The cocultured eMSCs retained their multipotent characteristic and exhibited a greater total cell output when compared with medium alone culture. The expression of active β‐catenin in eMSCs increased significantly after coculture with myometrial cells, suggesting activation of WNT/β‐catenin signaling. Secretory factors in spent medium from myometrial cell culture produced the same stimulatory effects on eMSCs. The involvement of WNT/β‐catenin signaling in self‐renewal of eMSCs was confirmed with the use of WNT activator (Wnt3A conditioned medium) and WNT inhibitors (XAV939 and inhibitor of Wnt Production‐2 [IWP‐2]). The myometrial cells expressed more WNT5A than other WNT ligands. Recombinant WNT5A stimulated whereas anti‐WNT5A antibody suppressed the colony formation, self‐renewal, and T‐cell factor/lymphoid enhancer‐binding factor (TCF/LEF) transcriptional activities of eMSCs. Moreover, eMSCs expressed FZD4 and LRP5. WNT5A is known to activate the canonical WNT signaling in the presence of these receptor components. WNT antagonist, DKK1, binds to LRP5/6. Consistently, DKK1 treatment nullified the stimulatory effect of myometrial cell coculture. In conclusion, our findings show that the myometrial cells are niche components of eMSCs, modulating the self‐renewal activity of eMSCs by WNT5A‐dependent activation of WNT/β‐catenin signaling.-
dc.languageeng-
dc.publisherAlphaMed Press, published in association with Wiley. The Journal's web site is located at http://www.stemcells.com-
dc.relation.ispartofStem Cells-
dc.subjectCell signaling-
dc.subjectCell biology-
dc.subjectStem cell-microenvironment interactions-
dc.subjectStromal cells-
dc.titleMyometrial cells stimulate self-renewal of endometrial mesenchymal stem-like cells through WNT5A/β-catenin signaling-
dc.typeArticle-
dc.identifier.emailChan, RWS: rwschan@hku.hk-
dc.identifier.emailLee, CL: kcllee@hku.hk-
dc.identifier.emailLi, RHW: raymondli@hku.hk-
dc.identifier.emailNg, EHY: nghye@hku.hk-
dc.identifier.emailChiu, PCN: pchiucn@hku.hk-
dc.identifier.emailYeung, WSB: wsbyeung@hku.hk-
dc.identifier.authorityPang, RTK=rp01761-
dc.identifier.authorityLee, CL=rp02515-
dc.identifier.authorityLi, RHW=rp01649-
dc.identifier.authorityNg, EHY=rp00426-
dc.identifier.authorityChiu, PCN=rp00424-
dc.identifier.authorityYeung, WSB=rp00331-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1002/stem.3070-
dc.identifier.pmid31414525-
dc.identifier.scopuseid_2-s2.0-85074227622-
dc.identifier.hkuros313717-
dc.identifier.volume37-
dc.identifier.issue11-
dc.identifier.spage1455-
dc.identifier.epage1466-
dc.identifier.isiWOS:000489513600001-
dc.publisher.placeUnited States-
dc.identifier.issnl1066-5099-

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