Y-Box Binding Protein Dynamics in Cancer Biology

Y-Box Binding Proteins (YBX) are a family of cold shock domain proteins that regulate transcriptional and translational processes critical to cell survival and proliferation. Among these, YBX1 has emerged as a central actor in oncogenesis through its capacity to bind to both DNA and RNA, modulating gene expression programmes that underpin tumour growth, metastasis, drug resistance and interactions within the tumour microenvironment. Dynamic posttranslational modifications of YBX1, most notably phosphorylation at serine residues, control its subcellular localisation and affinity for target nucleic acids. In cancer cells, elevated YBX1 activity promotes epithelial-to-mesenchymal transition, sustains protein synthesis under stress, and cooperates with signalling pathways such as MAPK or CDK4/6 to drive progression and therapy resistance. Beyond YBX1, other family members such as YBX2 and YBX3 display tissue-specific patterns that correlate with disease stage and immune infiltration. The global significance of YBX dynamics spans multiple tumour types, pointing to their promise as biomarkers and therapeutic targets that can be exploited to overcome resistance and modulate the tumour milieu for improved patient outcomes.

Research from Nature Portfolio

Recent studies have illuminated the role of YBX1 as a regulator of epidermal progenitor cell homeostasis through posttranscriptional control. In stratified epithelium, YBX1 is selectively expressed in cycling keratinocyte progenitors and binds to the 3′ untranslated regions of senescence-associated cytokine mRNAs. Genetic ablation of YBX1 disrupts the balance between proliferation and differentiation, leading to premature progenitor senescence and impaired tissue architecture. These findings establish YBX1 not only as a mediator of cancer cell phenotypes but also as an essential effector of normal epithelial maintenance, underscoring the dual importance of its dynamic regulation.

Y-Box Binding Protein Dynamics in Cancer Biology publication trend

The graph below shows the total number of articles in y-box binding protein dynamics in cancer biology across all publications each year (not limited to Nature Index journals).

Technical terms

Y-Box Binding Protein 1 (YBX1): A cold shock domain protein that binds DNA and RNA to regulate gene transcription and mRNA translation.

Posttranscriptional regulation: Control of gene expression after mRNA synthesis, affecting mRNA stability or translation efficiency.

Phosphorylation: Addition of a phosphate group to a protein that alters its activity or interactions.

Tumour microenvironment: The surrounding non-cancerous cells, extracellular matrix and signalling molecules that influence tumour behaviour.

Biomarker: A measurable molecular indicator used to detect or predict disease progression and treatment response.

Epithelial-to-mesenchymal transition (EMT): The process by which epithelial cells acquire migratory and invasive characteristics typical of mesenchymal cells.

References

1. Upregulated PARP1 confers breast cancer resistance to CDK4/6 inhibitors via YB-1 phosphorylation. Experimental Hematology & Oncology (2023).
2. Inhibition of protein translational machinery in triple-negative breast cancer as a promising therapeutic strategy. Cell Reports Medicine (2024).
3. Comprehensive pan-cancer analysis of YBX family reveals YBX2 as a potential biomarker in liver cancer. Frontiers in Immunology (2024).
4. The RNA-binding protein YBX1 regulates epidermal progenitors at a posttranscriptional level. Nature Communications (2018).
5. Y-box binding protein-1 serine 102 is a downstream target of p90 ribosomal S6 kinase in basal-like breast cancer cells. Breast Cancer Research (2008).
6. YBX1/YB-1 induces partial EMT and tumourigenicity through secretion of angiogenic factors into the extracellular microenvironment. Oncotarget (2015).
7. Identification of Y-Box Binding Protein 1 As a Core Regulator of MEK/ERK Pathway-Dependent Gene Signatures in Colorectal Cancer Cells. PLOS Genetics (2010).
8. Y-Box Binding Protein 1: Unraveling the Multifaceted Role in Cancer Development and Therapeutic Potential. International Journal of Molecular Sciences (2024).
9. Cold shock proteins: from cellular mechanisms to pathophysiology and disease. Cell Communication and Signaling (2018).