Astrocyte Elevated Gene Functions in Cancer Progression

The astrocyte elevated gene family, notably AEG-1 (also known as metadherin), has emerged as a central driver of oncogenesis across diverse tumour types. AEG-1 exerts multifaceted effects on cancer progression by modulating key signalling cascades such as NF-κB, PI3K/Akt, Wnt/β-catenin and MAPK. It enhances angiogenesis, invasion and metastatic dissemination through transcriptional co-activation and post-transcriptional regulation of target genes. Interaction with proteins like SND1 within the RNA-induced silencing complex amplifies the degradation of tumour suppressor mRNAs, thereby promoting chemoresistance and evasion of senescence. Epigenetic mechanisms, including DNA methylation of adhesion molecules, further contribute to the aggressive phenotype. Understanding the dynamic regulation of AEG-1 and its partners offers promising avenues for therapeutic intervention across hepatocellular carcinoma, breast, lung and other malignancies.

Research from Nature Portfolio

Recent studies have illuminated post-translational control of AEG-1 by identifying it as a direct substrate of IKKβ. Quantitative phosphoproteomic analyses revealed phosphorylation of AEG-1 at a conserved serine residue, which is essential for efficient IκBα degradation and full activation of NF-κB-dependent transcription. This modification correlates with enhanced proliferative capacity and poorer patient outcomes, highlighting a novel regulatory node that links inflammatory signalling to oncogenic AEG-1 function.

Astrocyte Elevated Gene Functions in Cancer Progression publication trend

The graph below shows the total number of articles in astrocyte elevated gene functions in cancer progression across all publications each year (not limited to Nature Index journals).

Technical terms

AEG-1/Metadherin (MTDH): An oncogenic protein that enhances tumour growth, invasion and chemoresistance through transcriptional and post-transcriptional mechanisms.

SND1: A multifunctional nuclease and scaffolding protein involved in RNA-induced gene silencing and transcriptional regulation, which cooperates with AEG-1 to promote cancer progression.

NF-κB: A family of transcription factors central to inflammatory and survival signalling that is commonly hijacked by oncogenes to support tumour development.

Phosphorylation: The enzymatic addition of a phosphate group to a protein, often modulating its activity, localisation or interactions.

RNA-induced silencing complex (RISC): A multiprotein assembly that mediates microRNA and siRNA-dependent gene silencing by targeting and degrading complementary mRNA transcripts.

References

1. Metadherin: A Therapeutic Target in Multiple Cancers. Frontiers in Oncology (2019).
2. Quantitative analysis of the TNF-α-induced phosphoproteome reveals AEG-1/MTDH/LYRIC as an IKKβ substrate. Nature Communications (2015).
3. The crosstalk between SND1 and PDCD4 is associated with chemoresistance of non-small cell lung carcinoma cells. Cell Death Discovery (2025).
4. The chromatin architectural regulator SND1 mediates metastasis in triple-negative breast cancer by promoting CDH1 gene methylation. Breast Cancer Research (2023).
5. Identification of Staphylococcal Nuclease Domain-containing 1 (SND1) as a Metadherin-interacting Protein with Metastasis-promoting Functions*. Journal of Biological Chemistry (2011).