circRNA basic information
circBase ID: hsa_circ_0001535
Name: hsa_circ_FAM13B
Synonym: hsa_circRNA_103951
Host Gene: FAM13B
Genomic location(hg19): chr5:137320945-137324004:-
Genomic location(hg38): chr5:137985256-137988315:-
Subcellular localization: cytoplasm
 
 
 
 
 
 
 
Disease basic information
MONDO ID:
0007256
MONDO name: hepatocellular carcinoma
Disease details: hepatocellular carcinoma
Disease DO ID:
684, 686
Disease MeSH ID:
D006528
Disease NCIt ID:
C3099
Disease ICD11 ID:
1294035808
Disease OMIM ID:
114550
Species: Human
Species details: Homo sapiens
Tissue specimen:

HCC tissue; adjacent tissue; tumor tissue

Cell lines:

HepG2; Smmc-7721; HLE; Huh7; Bel-7404; LO2

In vivo animal model:

cell line-derived xenograft

circRNA-disease information
Expression pattern:
UP
Associated gene: E2F5, Ago2, p53, PUMA, P21
Associated microRNA: miR-212-3p
Biological function: promotes proliferation; promotes tumor growth in vivo
Molecular mechanism: Acts as a ceRNA/molecular sponge for miR-212-3p to upregulate E2F5; inhibits p53 signaling pathway
Biological pathway or process:

proliferation (promotes); p53 signaling (inhibits); ceRNA regulation (promotes); ERK (promotes)

Detected method:
Q
M
Validation methods:

Microarray; RT-qPCR; Back-Splice Junction PCR / divergent primers PCR; RNase R Treatment; Actinomycin D / DRB Stability Assay; Nuclear-Cytoplasmic Fractionation; FISH / smFISH; RIP (RNA Immunoprecipitation); Luciferase Reporter Assay; Transfection; CCK8; Colony Formation Assay; Western Blot; In Vivo Animal Model; Bioinformatics Analysis; Clinical Sample Validation

Clinical significance:

circFAM13B may represent used as a novel biomarker and target for the diagnosis and clinical treatment of HCC.

Description:

circFAM13B is up-regulated in HCC tissues/cell lines and promotes HCC cell proliferation and xenograft tumor growth. Mechanistically, it functions as a ceRNA by sponging miR-212-3p to relieve repression of E2F5, thereby suppressing p53 pathway activity (and is also discussed as activating ERK signaling).

Confidence score:

0.8375

Other information
Title:

CircFAM13B promotes the proliferation of hepatocellular carcinoma by sponging miR-212, upregulating E2F5 expression and activating the P53 pathway.

Journal: Cancer cell international
Published: 2021
PubMed ID: 34348712
Study type:

combined biological and clinical study

Data availability: GSE97332; 10.1186/s12935-021-02120-6
Code availability: -