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PELP1: Structure, biological function and clinical significance
Gangadhara Reddy Sareddy1, Ratna K Vadlamudi1
1Department of Obstetrics and Gynecology, The University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, United States.
Insights
Proline-, glutamic acid-, and leucine-rich protein 1 (PELP1) is a key protein involved in cancer. This review summarizes PELP1
Area of Science:
- Molecular Biology
- Cancer Biology
- Epigenetics
Background:
- Proline-, glutamic acid-, and leucine-rich protein 1 (PELP1) is a scaffolding protein.
- PELP1 interacts with transcription factors, nuclear receptors, and chromatin-modifying complexes.
- Histone modifications and kinase phosphorylation regulate PELP1 function.
Purpose of the Study:
- To review the biological properties and functions of PELP1.
- To highlight PELP1's roles in various cellular pathways.
- To discuss PELP1's significance in cancer and as a therapeutic target.
Main Methods:
- Literature review of existing studies on PELP1.
- Analysis of PELP1's interactions with other proteins and complexes.
- Examination of PELP1's role in cancer signaling and response.
Main Results:
- PELP1 regulates hormonal signaling, cell cycle, ribosomal biogenesis, and DNA damage response.
- PELP1 expression is elevated in various cancers.
- PELP1 deregulation is linked to therapy resistance and poor prognosis in breast cancer.
Conclusions:
- PELP1 is a crucial regulator in multiple cellular processes.
- PELP1's aberrant expression and function make it a significant factor in cancer development.
- PELP1 represents a promising therapeutic target for hormonal cancers.
Abstract:
Proline-, glutamic acid-, and leucine-rich protein 1 (PELP1) is a scaffolding protein that functions as a coregulator of several transcription factors and nuclear receptors. Notably, the PELP1 protein has a histone-binding domain, recognizes histone modifications and interacts with several chromatin-modifying complexes. PELP1 serves as a substrate of multitude of kinases, and phosphorylation regulates its functions in various complexes. Further, PELP1 plays essential roles in several pathways including hormonal signaling, cell cycle progression, ribosomal biogenesis, and the DNA damage response. PELP1 expression is upregulated in several cancers, its deregulation contributes to therapy resistance, and it is a prognostic biomarker for breast cancer survival. Recent evidence suggests that PELP1 represents a novel therapeutic target for many hormonal cancers. In this review, we summarized the emerging biological properties and functions of PELP1.
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