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Updated: Feb 16, 2026

Development of Compendium for Esophageal Squamous Cell Carcinoma
Published on: April 12, 2024
KH-type splicing regulatory protein is involved in esophageal squamous cell carcinoma progression
Yuji Fujita1,2, Kiyoshi Masuda1, Junichi Hamada1,2
1Department of Human Genetics, Graduate School of Biomedical Sciences, Tokushima University, Tokushima, Japan.
Abstract:
KH-type splicing regulatory protein (KHSRP) is a multifunctional RNA-binding protein, which is involved in several post-transcriptional aspects of RNA metabolism, including microRNA (miRNA) biogenesis. It affects distinct cell functions in different tissues and can have an impact on various pathological conditions. In the present study, we investigated the oncogenic functions of KHSRP and their underlying mechanisms in the pathogenesis of esophageal squamous cell carcinoma (ESCC). KHSRP expression levels were elevated in ESCC tumors when compared with those in non-tumorous tissues by immunohistochemistry, and cytoplasmic KHSRP overexpression was found to be an independent prognosticator for worse overall survival in a cohort of 104 patients with ESCC. KHSRP knockdown inhibited growth, migration, and invasion of ESCC cells. KHSRP knockdown also inhibited the maturation of cancer-associated miRNAs, such as miR-21, miR-130b, and miR-301, and induced the expression of their target mRNAs, such as BMP6, PDCD4, and TIMP3, resulting in the inhibition of epithelial-to-mesenchymal transition. Our findings uncover a novel oncogenic function of KHSRP in esophageal tumorigenesis and implicate its use as a marker for prognostic evaluation and as a putative therapeutic target in ESCC.
Insights
KH-type splicing regulatory protein (KHSRP) promotes esophageal squamous cell carcinoma (ESCC) by affecting microRNA maturation. Elevated KHSRP indicates poor prognosis and suggests it as a potential therapeutic target for ESCC.
Area of Science:
- Molecular Biology
- Oncology
- RNA Metabolism
Background:
- KH-type splicing regulatory protein (KHSRP) is a multifunctional RNA-binding protein involved in post-transcriptional RNA metabolism, including microRNA (miRNA) biogenesis.
- KHSRP influences various cellular functions and pathological conditions.
Purpose of the Study:
- To investigate the oncogenic functions of KHSRP and its mechanisms in esophageal squamous cell carcinoma (ESCC) pathogenesis.
Main Methods:
- Immunohistochemistry to assess KHSRP expression in ESCC tumors versus non-tumorous tissues.
- KHSRP knockdown experiments in ESCC cells.
- Analysis of miRNA maturation and target mRNA expression.
Main Results:
- KHSRP expression was elevated in ESCC tumors and correlated with worse overall survival.
- KHSRP knockdown inhibited ESCC cell growth, migration, and invasion.
- KHSRP knockdown impaired cancer-associated miRNA maturation and suppressed epithelial-to-mesenchymal transition.
Conclusions:
- KHSRP exhibits oncogenic functions in esophageal tumorigenesis.
- KHSRP serves as a prognostic marker for ESCC.
- KHSRP represents a potential therapeutic target for ESCC treatment.
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