Cited by 76Wnt/β-catenin signaling in development and cancerTGF-β signaling in diseasesReproductive Biology and Fertility

SMAD4 activates Wnt signaling pathway to inhibit granulosa cell apoptosis

Open access
Du, Xing, Li, Qiqi, Yang, Liu, Liu, Lu, Cao, Qiuyu, Li, Qifa·2020·Cell Death & Disease

Abstract

The TGF-β and Wnt signaling pathways are interrelated in many cell types and tissues, and control cell functions in coordination. Here, we report that SMAD4, a downstream effector of the TGF-β signaling pathway, induces FZD4, a receptor of the Wnt signaling pathway, establishing a novel route of communication between these two pathways in granulosa cells (GCs). We found that SMAD4 is a strong inducer of FZD4, not only initiating FZD4 transcription but also activating FZD4-dependent Wnt signaling and GC apoptosis. Furthermore, we identified the direct and indirect mechanisms by which SMAD4 promotes expression of FZD4 in GCs. First, SMAD4 functions as a transcription factor to directly bind to the FZD4 promoter region to increase its transcriptional activity. Second, SMAD4 promotes production of SDNOR, a novel lncRNA that acts as a sponge for miR-29c, providing another mean to block miR-29c from degenerating FZD4 mRNA. Overall, our findings not only reveal a new channel of crosstalk between the TGF-β and Wnt signaling pathways, SMAD4–FZD4 axis, but also provide new insights into the regulatory network of GC apoptosis and follicular atresia. These RNA molecules, such as miR-29c and lnc-SDNOR, represent potential targets for treatment of reproductive diseases and improvement of female fertility.

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  • Dysregulation of SMAD4 is associated with cancer progression, encompassing autophagy, invasion and metastasis.

    “Dysregulation of SMAD4 is associated with various aspects of cancer progression, encompassing autophagy, invasion and metastasis, underscoring its significance in cellular responses and disease [114].”

    From Significance of TP53, CDKN2A, SMAD4 and KRAS in Pancreatic Cancer (2024) · cites this paper as [114]

    The Introduction (page not provided) says SMAD4 regulates autophagy, invasion and metastasis, and that its deficiency or inactivation can drive cancers. It does not specifically establish that dysregulation of SMAD4 affects all three as aspects of cancer progression. (LLM, conf=0.83)

    Experimental — accuracy not yet measured
  • SMAD4 participates in crosstalk with the Wnt signaling pathway by inducing transcription of FZD4, a Wnt pathway receptor.

    “Beyond the TGF-β pathway, SMAD4 participates in crosstalk with the Wnt signaling pathway by inducing the transcription of FZD4, a Wnt pathway receptor, emphasizing its broader regulatory impact on cellular functions [114].”

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Research works printed but not linked: 2

  1. [1]Massague J TGFbeta in Cancer Cell 2008 134 215 230 PMC3512574 18662538
  2. [31]Massague J TGFbeta signalling in context Nat. Rev. Mol. Cell Biol. 2012 13 616 630 22992590 PMC4027049

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Authors
Du, X., Li, Q., Yang, L., Liu, L., Cao, Q., & Li, Q.
Affiliations
Nanjing Agricultural University (CN)
Corresponding author
Li, Qifa
Venue
Cell Death & Disease
Published
2020-05-15
Volume
11
Issue
5
Pages
373-373
ISSN
2041-4889 (ISSN-L)
OpenAlex
W3024285751
Cited by
76
References
70
Citations by year
2026: 10 · 2025: 10 · 2024: 14 · 2023: 16 · 2022: 12 · 2021: 10 · 2020: 4
FWCI
3.41
Type
journal article
Language
en
Open access
Locations
  • Cell Death and Disease (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
National Natural Science Foundation of China (31630072, 31902130)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Wnt/β-catenin signaling in development and cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › TGF-β signaling in diseases
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Reproductive Biology and Fertility
Keywords
SMAD4, Wnt signaling, TGF-beta signaling, FZD4, granulosa cells, apoptosis, follicular atresia, long non-coding RNA, miR-29c, microRNA sponge, transcriptional regulation, female fertility
MeSH terms
Female, Follicular Atresia, Gene Expression Regulation, Granulosa Cells, Humans, Promoter Regions, Genetic, Apoptosis, MicroRNAs, Smad4 Protein, Wnt Signaling Pathway

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