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Updated: Feb 11, 2026

Heterotypic Three-dimensional In Vitro Modeling of Stromal-Epithelial Interactions During Ovarian Cancer Initiation and Progression
Published on: August 28, 2012
FGFRL1 Promotes Ovarian Cancer Progression by Crosstalk with Hedgehog Signaling
Haiyan Tai1, Zhiyong Wu1, Su'an Sun2
1Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200011, China.
Abstract:
Fibroblast growth factor receptor-like-1 (FGFRL1) has been identified as the fifth fibroblast growth factor receptor. So far, little is known about its biological functions, particularly in cancer development. Here, for the first time, we demonstrated the roles of FGFRL1 in ovarian carcinoma (OC). An array and existing databases were used to investigate the expression profile of FGFRL1 and the relationship between FGFRL1 expression and clinicopathological parameters. FGFRL1 was significantly upregulated in OC patients, and high FGFRL1 expression was correlated with poor prognosis. In vitro cell proliferation, apoptosis and migration assays, and in vivo subcutaneous xenograft tumor models were used to determine the role of FGFRL1. Loss of function of FGFRL1 significantly influenced cell proliferation, apoptosis, and migration of OC cells in vitro and tumor growth in vivo. Chromatin immunoprecipitation PCR analysis and microarray hybridization were performed to uncover the mechanism. FGFRL1 expression could be induced by hypoxia through hypoxia-inducible factor 1α, which directly binds to the promoter elements of FGFRL1. FGFRL1 promoted tumor progression by crosstalk with Hedgehog (Hh) signaling. Taken together, FGFRL1 is a potential predictor and plays an important role in tumor growth and Hh signaling which could serve as potential therapeutic targets for the treatment of OC.
Insights
Fibroblast growth factor receptor-like-1 (FGFRL1) is upregulated in ovarian carcinoma (OC), promoting tumor growth and progression. Targeting FGFRL1 and its associated Hedgehog signaling pathways may offer new therapeutic strategies for OC.
Area of Science:
- Oncology
- Molecular Biology
- Cell Biology
Background:
- Fibroblast growth factor receptor-like-1 (FGFRL1), the fifth fibroblast growth factor receptor, has largely uncharacterized biological functions, especially in cancer.
- Understanding FGFRL1's role is crucial for advancing ovarian carcinoma (OC) research and treatment.
Purpose of the Study:
- To investigate the expression profile and biological functions of FGFRL1 in ovarian carcinoma (OC).
- To explore the underlying mechanisms of FGFRL1 regulation and its impact on tumor progression.
Main Methods:
- Gene expression analysis using arrays and databases.
- In vitro assays (proliferation, apoptosis, migration) and in vivo xenograft models.
- Chromatin immunoprecipitation PCR and microarray hybridization to elucidate molecular mechanisms.
Main Results:
- FGFRL1 was significantly upregulated in OC tissues and correlated with poor prognosis.
- FGFRL1 knockdown inhibited OC cell proliferation, migration, and in vivo tumor growth.
- Hypoxia induces FGFRL1 via hypoxia-inducible factor 1α, and FGFRL1 crosstalks with Hedgehog signaling.
Conclusions:
- FGFRL1 is a potential prognostic biomarker for OC.
- FGFRL1 plays a critical role in OC progression through hypoxia-inducible factor 1α and Hedgehog signaling.
- FGFRL1 and associated pathways represent potential therapeutic targets for OC treatment.
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