circRNA basic information
circBase ID: -
Name: hsa_circ_FGFR3
Synonym: -
Host Gene: FGFR3
Genomic location(hg19): -
Genomic location(hg38): -
Subcellular localization: not tested
 
 
 
 
 
 
 
Disease basic information
MONDO ID:
0008170
MONDO name: ovarian cancer
Disease details: ovarian cancer
Disease DO ID:
2394
Disease MeSH ID:
D010051
Disease NCIt ID:
C7431
Disease ICD11 ID:
685124533
Disease OMIM ID:
167000
Species: Human
Species details: Homo sapiens
Tissue specimen:

tumor tissues

Cell lines:

IOSE80; SKOV3; A2780; OVCAR8; OVCAR3; ID8; CD8 + T cells

In vivo animal model:

syngeneic model

circRNA-disease information
Expression pattern:
UP
Associated gene: RBM15, EIF4A3, JAK2, STAT3, STAT5
Associated microRNA: -
Biological function: Promotes ovarian cancer cell proliferation, colony formation, migration, invasion, PD-L1-mediated immune escape, and tumor progression; reduces CD8 + T cell activity and anti-tumor cytokine secretion and enhances CD8 + T cell apoptosis.
Molecular mechanism: RBM15 upregulates circFGFR3 through m6A modification; circFGFR3 binds to EIF4A3 and enhances JAK2, STAT3, and STAT5 mRNA stability, activating the JAK/STAT signaling pathway and promoting PD-L1-mediated immune evasion.
Biological pathway or process:

JAK/STAT (promotes); immune regulation (promotes); proliferation (promotes); migration (promotes); invasion (promotes); mRNA stability (promotes); m6A modification (other)

Detected method:
Q
Validation methods:

RNase R Treatment; Actinomycin D / DRB Stability Assay; RT-qPCR; MeRIP / MeRIP-seq; RIP (RNA Immunoprecipitation); RNA Pull-Down; Transfection; CCK8; Colony Formation Assay; Annexin V/PI Flow Cytometry; Transwell Assay; In Vivo Animal Model; IHC (Immunohistochemistry); ELISA; Western Blot; Bioinformatics Analysis

Clinical significance:

-

Description:

circFGFR3 is upregulated in ovarian cancer cells and acts as a pro-tumor and pro-immune-escape circRNA. RBM15 increases circFGFR3 expression via m6A modification, while circFGFR3 recruits EIF4A3 to stabilize JAK2, STAT3, and STAT5 mRNAs, activating JAK/STAT signaling and increasing PD-L1-mediated immune evasion.

Confidence score:

0.8119

Other information
Title:

Mechanism of RBM15 in Regulating PD-L1-Mediated Immune Escape in Ovarian Cancer Through the JAK2/STAT3/STAT5 Pathway.

Journal: Archivum immunologiae et therapiae experimentalis
Published: 2026
PubMed ID: 41686430
Study type:

biological research

Data availability: all data supporting the findings of this study are available within the paper, and any raw data can be obtained from the corresponding author upon request
Code availability: -