ZNF768 loss amplifies p53 action and reduces lung tumorigenesis in mice
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View abstract on PubMed
Summary
This summary is machine-generated.Zinc finger protein 768 (ZNF768) drives cell proliferation and inhibits tumor suppressor p53. Loss of ZNF768 in mice impairs growth and represses lung tumor development, suggesting ZNF768 as a cancer target.
Area Of Science
- Molecular Biology
- Cell Biology
- Cancer Research
Background
- Cell proliferation is crucial for development and maintenance; its dysregulation causes cancer.
- Zinc finger protein 768 (ZNF768) is an emerging transcription factor promoting proliferation by regulating cell division genes and inhibiting p53.
- The in vivo roles of ZNF768 in physiology and pathology remain largely unknown.
Purpose Of The Study
- To investigate the physiological and pathological roles of ZNF768 in vivo.
- To characterize a ZNF768 null mouse model to understand its function in growth, cellular stress response, and cancer development.
Main Methods
- Generation and characterization of ZNF768 null mice.
- Isolation and analysis of mouse embryonic fibroblasts (MEFs) for senescence and stress response.
- Assessment of radiosensitivity in ZNF768 null mice.
- Evaluation of ZNF768's impact on lung tumorigenesis in a KRAS-driven cancer model.
Main Results
- ZNF768 null mice exhibit early-life growth defects and increased radiosensitivity.
- MEFs from ZNF768 null embryos show elevated p53, premature senescence, and heightened sensitivity to genotoxic stress.
- Loss of ZNF768 significantly repressed lung tumor development in a KRAS<sup>G12D</sup>-induced cancer model, associated with altered gene expression in signaling, adhesion, and growth pathways.
Conclusions
- ZNF768 is a key regulator of cell proliferation with significant in vivo functions.
- ZNF768 deficiency leads to impaired growth, increased sensitivity to DNA damage, and reduced tumor development.
- ZNF768 represents a potential therapeutic target for reducing tumorigenesis.
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