ArticleThe Journal of cell biology2024
Claudin 7 suppresses invasion and metastasis through repression of a smooth muscle actin program.
Article in The Journal of cell biology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- From Glycan Biology to Drug Candidates: An Integrated Sialylation Niche Index and AI-Guided Therapeutic Framework for Head and Neck Squamous Cell Carcinoma.Biomedicines · 2026Article
- Claudin proteins as emerging therapeutic targets for solid tumours.Nature reviews. Cancer · 2026Review
- CLDN7: Epithelial gatekeeper from physiology to pathology‑roles in cancer and epithelial‑related diseases (Review).International journal of molecular medicine · 2026Review
- Identification and validation of a novel estrogen-related model for breast cancer to predict the prognosis.Translational cancer research · 2026Article
- Gap junction communication regulates luminal-myoepithelial crosstalk and cell differentiation in a bilayered human mammary epithelial cell model.Biology methods & protocols · 2026Article
- Inhibition of HuR/ELAVL-1 attenuates fibrotic progression in Mdx mice with dilated cardiomyopathy.Cellular and molecular life sciences : CMLS · 2025Article
- Computational Investigation of Smooth Muscle Cell Plasticity in Atherosclerosis and Vascular Calcification: Insights from Differential Gene Expression Analysis of Microarray Data.Bioengineering (Basel, Switzerland) · 2025Article
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Authors and funding
8 authors.
Funding
Abstract
Metastasis initiates when cancer cells escape from the primary tumor, which requires changes to intercellular junctions. Claudins are transmembrane proteins that form the tight junction, and their expression is reduced in aggressive breast tumors. However, claudins' roles during breast cancer metastasis remain unclear. We used gain- and loss-of-function genetics in organoids isolated from murine breast cancer models to establish that Cldn7 suppresses invasion and metastasis. Transcriptomic analysis revealed that Cldn7 knockdown induced smooth muscle actin (SMA)-related genes and a broader mesenchymal phenotype. We validated our results in human cell lines, fresh human tumor tissue, bulk RNA-seq, and public single-cell RNA-seq data. We consistently observed an inverse relationship between Cldn7 expression and expression of SMA-related genes. Furthermore, knockdown and overexpression of SMA-related genes demonstrated that they promote breast cancer invasion. Our data reveal that Cldn7 suppresses breast cancer invasion and metastasis through negative regulation of SMA-related and mesenchymal gene expression.
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