ZNF8 promotes progression of gastrointestinal cancers via a p53-dependent mechanism
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View abstract on PubMed
Summary
This summary is machine-generated.Zinc finger protein 8 (ZNF8) promotes gastrointestinal cancer progression by suppressing the tumor suppressor p53. Targeting ZNF8 may offer a new therapeutic strategy for these malignancies.
Area Of Science
- Oncology
- Molecular Biology
- Cancer Genetics
Background
- p53 is a crucial tumor suppressor, and its dysfunction is linked to cancer development.
- Krüppel-associated box (KRAB) domain zinc-finger proteins (KZFPs) are known to interact with and regulate p53.
- The specific roles of KZFPs in tumor biology require further elucidation.
Purpose Of The Study
- To investigate the tumor biology functions of ZNF8, a p53-interacting protein, in gastrointestinal cancers (GICs).
- To determine the prognostic significance of ZNF8 in GICs.
- To explore the mechanism by which ZNF8 influences cancer progression in a p53-dependent manner.
Main Methods
- Pan-cancer analysis of gastrointestinal cancer data.
- In vitro studies using colon cancer cell lines (HCT116, HepG2, EC109) with varying p53 status.
- Assessment of cell proliferation, colony formation, migration, invasion, and angiogenesis.
- In vivo xenograft experiments in mice.
- Immunohistochemistry analysis of clinical patient cohorts.
Main Results
- ZNF8 expression is an unfavorable prognostic factor in GICs, particularly in patients with intact p53.
- ZNF8 interacts with p53 and inhibits its transcriptional activity in colon cancer cells.
- ZNF8 knockdown suppresses, while overexpression enhances, cancer cell behaviors (colony formation, migration, invasion, angiogenesis) in a p53-dependent manner.
- In vivo, ZNF8 knockdown curbed tumor growth and metastasis in p53-proficient models.
- High ZNF8 expression in tumor tissues correlates with worse survival in GIC patients without p53 mutations.
Conclusions
- ZNF8 exhibits p53-specific oncogenic functions in gastrointestinal cancers.
- ZNF8 promotes tumor growth, invasion, and metastasis.
- ZNF8 represents a potential therapeutic target for GICs, especially in tumors with functional p53.
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