circRNA basic information
circBase ID: hsa_circ_0003222
Name: hsa_circ_LARP4
Synonym: hsa-circ-0003222
Host Gene: LARP4
Genomic location(hg19): chr12:50848096-50855130:+
Genomic location(hg38): chr12:50454313-50461347:+
Subcellular localization: nucleus and cytoplasm
 
 
 
 
 
 
 
Disease basic information
MONDO ID:
0005233
MONDO name: non-small cell lung carcinoma
Disease details: non-small cell lung cancer
Disease DO ID:
3908
Disease MeSH ID:
D002289
Disease NCIt ID:
C2926
Disease ICD11 ID:
-
Disease OMIM ID:
-
Species: Human
Species details: Homo sapiens
Tissue specimen:

NSCLC tumor tissues; adjacent non-tumor tissues; xenograft tumor tissue

Cell lines:

PC9; A549; SW900

In vivo animal model:

cell line-derived xenograft

circRNA-disease information
Expression pattern:
UP
Associated gene: PHF21B, beta-catenin, PD-L1
Associated microRNA: hsa-miR-527
Biological function: promotes proliferation, migration, invasion, stemness-like properties, metastasis and chemoresistance; contributes to anti-PD-L1 therapy resistance
Molecular mechanism: ceRNA sponge of miR-527 to relieve repression of PHF21B, promoting downstream beta-catenin/Wnt signaling and stemness; influences PD-L1 levels
Biological pathway or process:

proliferation (promotes); migration (promotes); invasion (promotes); metastasis (promotes); stemness (promotes); chemoresistance (promotes); apoptosis (inhibits); Wnt/beta-catenin (promotes); ceRNA regulation (promotes); drug resistance (promotes)

Detected method:
Q
H
Validation methods:

RT-qPCR; ISH (In Situ Hybridization); Back-Splice Junction PCR / divergent primers PCR; RNase R Treatment; Luciferase Reporter Assay; RIP (RNA Immunoprecipitation); FISH / smFISH; Transfection; CCK8; Colony Formation Assay; Transwell Assay; Western Blot; IF (Immunofluorescence); In Vivo Animal Model; H&E Staining; IHC (Immunohistochemistry); TUNEL; Survival Analysis; Bioinformatics Analysis

Clinical significance:

Higher levels of hsa_circ_0003222 were associated with the stage, metastasis, and survival rate of patients with NSCLC; high expression indicates unfavorable prognosis.

Description:

hsa_circ_0003222 is up-regulated in NSCLC tissues and lung cancer stem-like cells and promotes proliferation, migration/invasion, stemness and cisplatin resistance. Mechanistically, it sponges miR-527 to increase PHF21B and downstream beta-catenin/Wnt signaling, and its inhibition sensitizes tumors to anti-PD-L1 therapy in vivo.

Confidence score:

0.8512

Other information
Title:

hsa_circ_0003222 accelerates stemness and progression of non-small cell lung cancer by sponging miR-527.

Journal: Cell death & disease
Published: 2021
PubMed ID: 34433810
Study type:

combined biological and clinical study

Data availability: Supplementary information available at 10.1038/s41419-021-04095-8
Code availability: -