Abstract

Advanced castrate-resistant prostate cancer (CRPC) is a poorly prognostic disease currently lacking effective cure. Understanding the molecular mechanism that underlies the initiation and progression of CRPC will provide new strategies for treating this deadly disease. One candidate target is the fibroblast growth factor (FGF) signaling axis. Loss of the intrinsic FGF7/FGF10-type 2 FGF receptor (FGFR2) pathway and gain of the ectopic type 1 FGF receptor (FGFR1) pathway are associated with the progression to malignancy in prostate cancer (PCa) and many other epithelial originating lesions. Although FGFR1 and FGFR2 share similar amino acid sequences and structural domains, the two transmembrane tyrosine kinases elicit distinctive, even sometime opposite signals in cells. Recent studies have revealed that the ectopic FGFR1 signaling pathway contributes to PCa progression via multiple mechanisms, including promoting tumor angiogenesis, reprogramming cancer cell metabolism, and potentiating inflammation in the tumor microenvironment. Thus, suppression of FGFR1 signaling can be an effective novel strategy to treat CRPC.

Highlights

  • Advanced castrate-resistant prostate cancer (CRPC) is a poorly prognostic disease currently lacking effective cure

  • Loss of the intrinsic FGF7/FGF10-type 2 fibroblast growth factor (FGF) receptor (FGFR2) pathway and gain of the ectopic type 1 FGF receptor (FGFR1) pathway are associated with the progression to malignancy in prostate cancer (PCa) and many other epithelial originating lesions

  • The fibroblast growth factor family consists of 18 intrinsic tissue regulatory polypeptides, which controls a broad spectrum of cellular processes through binding and activating the transmembrane FGF receptor (FGFR) tyrosine kinase (Figure 2A)

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Summary

Frontiers in Genetics

FGFR1 Signaling in the Prostate and Prostate Cancer. Advanced castrate-resistant prostate cancer (CRPC) is a poorly prognostic disease currently lacking effective cure. Understanding the molecular mechanism that underlies the initiation and progression of CRPC will provide new strategies for treating this deadly disease. Loss of the intrinsic FGF7/FGF10-type 2 FGF receptor (FGFR2) pathway and gain of the ectopic type 1 FGF receptor (FGFR1) pathway are associated with the progression to malignancy in prostate cancer (PCa) and many other epithelial originating lesions. Recent studies have revealed that the ectopic FGFR1 signaling pathway contributes to PCa progression via multiple mechanisms, including promoting tumor angiogenesis, reprogramming cancer cell metabolism, and potentiating inflammation in the tumor microenvironment. Suppression of FGFR1 signaling can be an effective novel strategy to treat CRPC

THE PROSTATE AND PROSTATE CANCER
FGF Signaling in the Prostate
THE FGF SIGNALING AXIS
INACTIVATING ECTOPIC FGF SIGNALING SUPPRESSES PROSTATE TUMORIGENESIS
Findings
AUTHOR CONTRIBUTIONS
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