ArticleCellular & molecular biology letters2024
Extrachromosomal circular DNA promotes prostate cancer progression through the FAM84B/CDKN1B/MYC/WWP1 axis.
Article in Cellular & molecular biology letters, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- KIAA1429 Stabilizes FAM84B mRNA to Enhance Colorectal Cancer Tumorigenesis via Wnt/β-Catenin Pathway.Biochemical genetics · 2026Article
- CircleBase V2: an eccDNA annotation platform across cancers and species.Nucleic acids research · 2026Article
- Article
- THBS2 Promotes Prostate Cancer Malignancy via INHBA-Dependent FAK/PI3K/AKT Signaling Activation.Analytical cellular pathology (Amsterdam) · 2026Article
- Extrachromosomal Circular DNA as a Cancer Biomarker: From Diagnosis to Treatment.Cancer innovation · 2025Review
- PAFAH1B3 Exists in Linear Chromosomal and Extrachromosomal Circular DNA and Promotes HCC Progression via EMT.International journal of molecular sciences · 2025Article
- Identification of eccDNA in Extracellular Vesicles Derived from Human Dermal Fibroblasts Through Nanopore Sequencing.International journal of molecular sciences · 2025Article
- Unveiling the mysteries of extrachromosomal circular DNA: from generation to clinical relevance in human cancers and health.Molecular cancer · 2024Review
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Authors and funding
4 authors.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundExtrachromosomal circular DNA (eccDNA), a kind of circular DNA that originates from chromosomes, carries complete gene information, particularly the oncogenic genes. This study aimed to examine the contributions of FAM84B induced by eccDNA to prostate cancer (PCa) development and the biomolecules involved.
methodsThe presence of eccDNA in PCa cells and the FAM84B transcripts that eccDNA carries were verified by outward and inward PCR. The effect of inhibition of eccDNA synthesis on FAM84B expression in PCa cells was analyzed by knocking down Lig3. The impact of FAM84B on the growth and metastases of PCa cells was verified by Cell Counting Kit-8 (CCK8), EdU, transwell assays, and a xenograft mouse model. Chromatin immunoprecipitation quantitative PCR (ChIP-qPCR) and dual-luciferase reporter assays were carried out to examine the effect of FAM84B/MYC on WWP1 transcription, and a co-immunoprecipitation (Co-IP) assay was conducted to verify the modification of CDKN1B by WWP1. The function of this molecular axis in PCa was explored by rescue assays.
resultsThe inhibited eccDNA synthesis significantly downregulated FAM84B in PCa cells, thereby attenuating the growth and metastasis of PCa. FAM84B promoted the transcription of WWP1 by MYC by activating the expression of MYC coterminous with the 8q24.21 gene desert in a beta catenin-dependent approach. WWP1 transcription promoted by MYC facilitated the ubiquitination and degradation of CDKN1B protein and inversely attenuated the repressive effect of CDKN1B on MYC expression. Exogenous overexpression of CDKN1B blocked FAM84B-activated MYC/WWP1 expression, thereby inhibiting PCa progression.
conclusionsFAM84B promoted by eccDNA mediates degradation of CDKN1B via MYC/WWP1, thereby accelerating PCa progression.
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