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Updated: Mar 27, 2026
14:57
Yeast As a Chassis for Developing Functional Assays to Study Human P53
Published on: August 4, 2019
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Modulating p53 condensation rewires transcriptional programs to enhance tumor suppression
Yan Liu1, Haoran Jia1, Xueying Guan1
1Department of Medical Genetics and Center for Rare Diseases and Zhejiang Key Laboratory of Rare Diseases for Precision Medicine and Clinical Translation, Second Affiliated Hospital, Liangzhu Laboratory & Department of Biochemistry, School of Medicine, Zhejiang University, Hangzhou 310058, China.
Summary
Engineering p53 protein condensates enhances its tumor-suppressing activity by selectively boosting anti-cancer genes and reducing pro-cancerous ones. This novel approach shows promise for more effective cancer therapies.
Area of Science:
- Molecular Biology
- Biophysics
- Cancer Therapeutics
Background:
- Wild-type p53 restoration is a cancer therapy strategy with limited success.
- p53's dual role in regulating both tumor suppressor and malignancy-promoting genes complicates its therapeutic use.
Purpose of the Study:
- To investigate the role of p53 biomolecular condensates in regulating gene expression.
- To engineer p53 with enhanced condensation properties for improved cancer therapy.
Main Methods:
- Live-cell super-resolution imaging to visualize endogenous p53 condensates.
- Engineering of liquid-liquid phase separation (LLPS)-enhanced p53 constructs (LLPSEp53s).
- Transcriptomic analysis to assess changes in gene expression.
- In vitro and in vivo cancer models (including melanoma in mice).
Main Results:
- Endogenous p53 forms novel, regulatable biomolecular condensates.
- Engineered LLPSEp53s exhibit increased condensation and act as hubs for gene regulation.
- LLPSEp53s preferentially enhance tumor-suppressive transcription while suppressing neuro-oncogenic gene expression.
- LLPSEp53s inhibit cancer cell proliferation and melanoma tumor growth with no added toxicity.
Conclusions:
- Biomolecular condensate formation is a critical, manipulable aspect of p53 function.
- Condensate engineering offers a strategy to enhance p53's tumor-suppressive selectivity.
- This approach holds potential for developing more effective p53-based cancer therapies.
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