WNT5A Interacts With FZD5 and LRP5 to Regulate Proliferation and Self-Renewal of Endometrial Mesenchymal Stem-Like Cells
Endometrial mesenchymal stem-like cells (eMSC) reside in the basal layer of the endometrium and are responsible for cyclic regeneration during the reproductive lives of women. Myometrial cells act as a component of the niche and regulate the stem cell fate through the activation of WNT/β-catenin sig...
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Frontiers Media S.A.
2022-02-01
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Online Access: | https://www.frontiersin.org/articles/10.3389/fcell.2022.837827/full |
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author | Tianqi Li Rachel W.S. Chan Rachel W.S. Chan Cheuk-Lun Lee Cheuk-Lun Lee Philip C.N. Chiu Philip C.N. Chiu Raymond H.W. Li Raymond H.W. Li Ernest H.Y. Ng Ernest H.Y. Ng William S.B. Yeung William S.B. Yeung |
author_facet | Tianqi Li Rachel W.S. Chan Rachel W.S. Chan Cheuk-Lun Lee Cheuk-Lun Lee Philip C.N. Chiu Philip C.N. Chiu Raymond H.W. Li Raymond H.W. Li Ernest H.Y. Ng Ernest H.Y. Ng William S.B. Yeung William S.B. Yeung |
author_sort | Tianqi Li |
collection | DOAJ |
description | Endometrial mesenchymal stem-like cells (eMSC) reside in the basal layer of the endometrium and are responsible for cyclic regeneration during the reproductive lives of women. Myometrial cells act as a component of the niche and regulate the stem cell fate through the activation of WNT/β-catenin signaling via WNT5A. Since WNT5A-responsive mechanisms on eMSC are still uncertain, we hypothesize that the WNT ligand–WNT5A works to activate WNT/β-catenin signaling through binding to Frizzled receptors (FZDs) and co-receptor low-density lipoprotein receptor-related protein 5 (LRP5). Among the various receptors that have been reported to interact with WNT5A, we found FZD5 abundantly expressed by eMSC when compared to unfractionated stromal cells. Neutralizing the protein expression by using anti-FZD5 antibody suppressed the stimulatory effects on phenotypic expression and the clonogenicity of eMSC in a myometrial cell–eMSC co-culture system as well as in an L-Wnt5a conditioned medium. Gene silencing of FZD5 not only reduced the binding of WNT5A to eMSC but also decreased the TCF/LEF transcriptional activities and expression of active β-catenin. Inhibition of LRP coreceptors with recombinant Dickkopf-1 protein significantly reduced the binding affinity of eMSC to WNT5A as well as the proliferation and self-renewal activity. During postpartum remodeling in mouse endometrium, active β-catenin (ABC) was detected in label-retaining stromal cells (LRSCs), and these ABC+ LRSCs express FZD5 and LRP5, suggesting the activation of WNT/β-catenin signaling. In conclusion, our findings demonstrate the interaction of WNT5A, FZD5, and LRP5 in regulating the proliferation and self-renewal of eMSC through WNT/β-catenin signaling. |
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spelling | doaj.art-126209b3b34d464a8ca6f019d9a7df532022-12-21T19:30:59ZengFrontiers Media S.A.Frontiers in Cell and Developmental Biology2296-634X2022-02-011010.3389/fcell.2022.837827837827WNT5A Interacts With FZD5 and LRP5 to Regulate Proliferation and Self-Renewal of Endometrial Mesenchymal Stem-Like CellsTianqi Li0Rachel W.S. Chan1Rachel W.S. Chan2Cheuk-Lun Lee3Cheuk-Lun Lee4Philip C.N. Chiu5Philip C.N. Chiu6Raymond H.W. Li7Raymond H.W. Li8Ernest H.Y. Ng9Ernest H.Y. Ng10William S.B. Yeung11William S.B. Yeung12Department of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, ChinaDepartment of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, ChinaShenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong Shenzhen Hospital, Shenzhen, ChinaShenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong Shenzhen Hospital, Shenzhen, ChinaDepartment of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, ChinaDepartment of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, ChinaShenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong Shenzhen Hospital, Shenzhen, ChinaDepartment of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, ChinaShenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong Shenzhen Hospital, Shenzhen, ChinaDepartment of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, ChinaShenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong Shenzhen Hospital, Shenzhen, ChinaShenzhen Key Laboratory of Fertility Regulation, The University of Hong Kong Shenzhen Hospital, Shenzhen, ChinaDepartment of Obstetrics and Gynaecology, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, Hong Kong SAR, ChinaEndometrial mesenchymal stem-like cells (eMSC) reside in the basal layer of the endometrium and are responsible for cyclic regeneration during the reproductive lives of women. Myometrial cells act as a component of the niche and regulate the stem cell fate through the activation of WNT/β-catenin signaling via WNT5A. Since WNT5A-responsive mechanisms on eMSC are still uncertain, we hypothesize that the WNT ligand–WNT5A works to activate WNT/β-catenin signaling through binding to Frizzled receptors (FZDs) and co-receptor low-density lipoprotein receptor-related protein 5 (LRP5). Among the various receptors that have been reported to interact with WNT5A, we found FZD5 abundantly expressed by eMSC when compared to unfractionated stromal cells. Neutralizing the protein expression by using anti-FZD5 antibody suppressed the stimulatory effects on phenotypic expression and the clonogenicity of eMSC in a myometrial cell–eMSC co-culture system as well as in an L-Wnt5a conditioned medium. Gene silencing of FZD5 not only reduced the binding of WNT5A to eMSC but also decreased the TCF/LEF transcriptional activities and expression of active β-catenin. Inhibition of LRP coreceptors with recombinant Dickkopf-1 protein significantly reduced the binding affinity of eMSC to WNT5A as well as the proliferation and self-renewal activity. During postpartum remodeling in mouse endometrium, active β-catenin (ABC) was detected in label-retaining stromal cells (LRSCs), and these ABC+ LRSCs express FZD5 and LRP5, suggesting the activation of WNT/β-catenin signaling. In conclusion, our findings demonstrate the interaction of WNT5A, FZD5, and LRP5 in regulating the proliferation and self-renewal of eMSC through WNT/β-catenin signaling.https://www.frontiersin.org/articles/10.3389/fcell.2022.837827/fullendometriumadult stem cellswnt / b-cateninwnt5astem cell niche |
spellingShingle | Tianqi Li Rachel W.S. Chan Rachel W.S. Chan Cheuk-Lun Lee Cheuk-Lun Lee Philip C.N. Chiu Philip C.N. Chiu Raymond H.W. Li Raymond H.W. Li Ernest H.Y. Ng Ernest H.Y. Ng William S.B. Yeung William S.B. Yeung WNT5A Interacts With FZD5 and LRP5 to Regulate Proliferation and Self-Renewal of Endometrial Mesenchymal Stem-Like Cells Frontiers in Cell and Developmental Biology endometrium adult stem cells wnt / b-catenin wnt5a stem cell niche |
title | WNT5A Interacts With FZD5 and LRP5 to Regulate Proliferation and Self-Renewal of Endometrial Mesenchymal Stem-Like Cells |
title_full | WNT5A Interacts With FZD5 and LRP5 to Regulate Proliferation and Self-Renewal of Endometrial Mesenchymal Stem-Like Cells |
title_fullStr | WNT5A Interacts With FZD5 and LRP5 to Regulate Proliferation and Self-Renewal of Endometrial Mesenchymal Stem-Like Cells |
title_full_unstemmed | WNT5A Interacts With FZD5 and LRP5 to Regulate Proliferation and Self-Renewal of Endometrial Mesenchymal Stem-Like Cells |
title_short | WNT5A Interacts With FZD5 and LRP5 to Regulate Proliferation and Self-Renewal of Endometrial Mesenchymal Stem-Like Cells |
title_sort | wnt5a interacts with fzd5 and lrp5 to regulate proliferation and self renewal of endometrial mesenchymal stem like cells |
topic | endometrium adult stem cells wnt / b-catenin wnt5a stem cell niche |
url | https://www.frontiersin.org/articles/10.3389/fcell.2022.837827/full |
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