The association between the expression of nuclear Yes-associated protein 1 (YAP1) and p53 protein expression profile in breast cancer patients.

Abstract

BACKGROUND:

Yes-associated protein 1 (YAP1) is a key effector molecule regulated by the Hippo pathway and described as a poor prognostic factor in breast cancer. Tumor protein 53 (TP53) mutation is well known as a biomarker related to poor survival outcomes. So far clinical characteristics and survival outcome according to YAP1 and TP53 mutation have been poorly identified in breast cancer.

PATIENTS AND METHODS:

Retrospectively, 533 breast tumor tissues were collected at the Seoul St Mary's hospital and Gangnam Severance Hospital from 1992 to 2017. Immunohistochemistry with YAP1 and p53 specific antibodies were performed, and the clinical data were analyzed.

RESULTS:

Mutant p53 pattern was associated with aggressive tumor features and advanced anatomical stage. Inferior overall survival (OS) and recurrence free survival (RFS) were related with mutant p53 pattern cases with low nuclear YAP1 expression (P = 0.0009 and P = 0.0011, respectively). Multivariate analysis showed that mutant p53 pattern was an independent prognostic marker for OS [hazard ratios (HR): 2.938, 95% confidence intervals (CIs): 1.028-8.395, P = 0.044] and RFS (HR: 1.842, 95% CIs: 1.026-3.304). However, in cases with high nuclear YAP1 expression, there were no significantly difference in OS and RFS according to p53 staining pattern.

CONCLUSION:

We found that mutant p53 pattern is a poor prognostic biomarker in breast tumor with low nuclear YAP1 expression. Our findings suggest that interaction between nuclear YAP1 and p53 expression pattern impact survival outcomes.

• Authors: Yoon Jin Cha, Dooreh Kim, Soong June Bae, Sung Gwe Ahn, Joon Jeong, Min Kyung Cho, Pill Sun Paik, Tae-Kyung Yoo, Woo-Chan Park, Chang Ik Yoon
• Journal: PloS one (PLoS One) Vol. 16 Issue 5 Pg. e0250986 ( 2021) ISSN: 1932-6203 [Electronic] United States
• PMID: 33970925 (Publication Type: Journal Article)

Chemical References

• Adaptor Proteins, Signal Transducing
• Biomarkers, Tumor
• TP53 protein, human
• Transcription Factors
• Tumor Suppressor Protein p53
• YAP-Signaling Proteins
• YAP1 protein, human

Topics

• Adaptor Proteins, Signal Transducing (genetics, metabolism)
• Biomarkers, Tumor (genetics, metabolism)
• Breast Neoplasms (genetics, metabolism, pathology)
• Cell Nucleus (metabolism)
• Female
• Humans
• Immunohistochemistry (methods)
• Middle Aged
• Mutation
• Prognosis
• Survival Rate
• Transcription Factors (genetics, metabolism)
• Tumor Suppressor Protein p53 (genetics, metabolism)
• YAP-Signaling Proteins