circRNA basic information
circBase ID: hsa_circ_0103433
Name: hsa_circ_KNSTRN
Synonym: circKNSTRN
Host Gene: KNSTRN
Genomic location(hg19): -
Genomic location(hg38): -
Subcellular localization: cytoplasm
 
 
 
 
 
 
 
Disease basic information
MONDO ID:
0007254
MONDO name: breast cancer
Disease details: breast cancer / BC
Disease DO ID:
1612
Disease MeSH ID:
-
Disease NCIt ID:
C9335
Disease ICD11 ID:
1047754165
Disease OMIM ID:
-
Species: Human
Species details: Homo sapiens
Tissue specimen:

breast cancer tissues; adjacent normal tissues

Cell lines:

MCF-7; T47D; MCF-10 A; HEK-293T

In vivo animal model:

cell line-derived xenograft

circRNA-disease information
Expression pattern:
UP
Associated gene: SPAG5
Associated microRNA: miR-320a-3p
Biological function: promotes proliferation and migration; regulates apoptosis and cell cycle
Molecular mechanism: ceRNA sponge of miR-320a-3p to regulate SPAG5 expression
Biological pathway or process:

proliferation (promotes); migration (promotes); apoptosis (inhibits); cell cycle (other); ceRNA regulation (other)

Detected method:
Q
Validation methods:

Back-Splice Junction PCR / divergent primers PCR; RNase R Treatment; Sanger Sequencing; Actinomycin D / DRB Stability Assay; RT-qPCR; FISH / smFISH; Luciferase Reporter Assay; RNA Pull-Down; Transfection; EdU Staining; Colony Formation Assay; Wound Healing Assay; Transwell Assay; Annexin V/PI Flow Cytometry; Cell Cycle Assay; Western Blot; Clinical Sample Validation; In Vivo Animal Model; H&E Staining; IHC (Immunohistochemistry); Bioinformatics Analysis

Clinical significance:

The circKNSTRN/miR-320a-3p/SPAG5 axis may serve as a promising therapeutic and prognostic target for BC.

Description:

circKNSTRN (hsa_circ_0103433), derived from KNSTRN, is up-regulated in breast cancer tissues and cell lines and predominantly localizes in the cytoplasm. It promotes breast cancer cell proliferation and migration, and modulates apoptosis and the cell cycle, mainly by sponging miR-320a-3p to increase SPAG5 expression via a ceRNA (circKNSTRN/miR-320a-3p/SPAG5) axis.

Confidence score:

0.8625

Other information
Title:

The circRNA circKNSTRN promotes breast cancer progression by modulating the miR-320a-3p/SPAG5 axis.

Journal: Scientific reports
Published: 2025
PubMed ID: 41326569
Study type:

combined biological and clinical study

Data availability: Materials and data associated with this study are available from the corresponding author upon request.
Code availability: -