Structure and Function of the Nuclear Receptor Superfamily and Current Targeted Therapies of Prostate Cancer
Baylee A Porter1,2, Maria A Ortiz1,2, Gennady Bratslavsky1,2
1Department of Urology, Upstate Cancer Center, SUNY Upstate Medical University, Syracuse, NY 13210, USA.
Abstract:
The nuclear receptor superfamily comprises a large group of proteins with functions essential for cell signaling, survival, and proliferation. There are multiple distinctions between nuclear superfamily classes defined by hallmark differences in function, ligand binding, tissue specificity, and DNA binding. In this review, we utilize the initial classification system, which defines subfamilies based on structure and functional difference. The defining feature of the nuclear receptor superfamily is that these proteins function as transcription factors. The loss of transcriptional regulation or gain of functioning of these receptors is a hallmark in numerous diseases. For example, in prostate cancer, the androgen receptor is a primary target for current prostate cancer therapies. Targeted cancer therapies for nuclear hormone receptors have been more feasible to develop than others due to the ligand availability and cell permeability of hormones. To better target these receptors, it is critical to understand their structural and functional regulation. Given that late-stage cancers often develop hormone insensitivity, we will explore the strengths and pitfalls of targeting other transcription factors outside of the nuclear receptor superfamily such as the signal transducer and activator of transcription (STAT).
Insights
Nuclear receptors are key transcription factors involved in cell signaling and disease. This review explores targeting them and other transcription factors like signal transducer and activator of transcription (STAT) proteins for cancer therapy.
Area of Science:
- Molecular Biology
- Cell Biology
- Biochemistry
Background:
- The nuclear receptor superfamily is a large group of proteins crucial for cell signaling, survival, and proliferation.
- These receptors function as transcription factors, and their dysregulation is implicated in numerous diseases.
- Targeting nuclear hormone receptors is a viable strategy for cancer therapy due to ligand availability.
Purpose of the Study:
- To review the classification, structure, and function of nuclear receptors.
- To discuss the therapeutic potential and challenges of targeting nuclear receptors in diseases like prostate cancer.
- To explore alternative transcription factor targets, such as signal transducer and activator of transcription (STAT) proteins, for late-stage cancers.
Main Methods:
- Literature review of nuclear receptor superfamily classification and function.
- Analysis of therapeutic strategies targeting nuclear receptors.
- Exploration of alternative transcription factor targets outside the nuclear receptor superfamily.
Main Results:
- Nuclear receptors are classified based on structural and functional differences, acting as critical transcription factors.
- Dysregulation of nuclear receptors is a hallmark of many diseases, with androgen receptor being a key target in prostate cancer.
- Hormone insensitivity in late-stage cancers necessitates exploring alternative targets like STAT proteins.
Conclusions:
- Understanding the structural and functional regulation of nuclear receptors is vital for developing effective therapies.
- Targeting nuclear receptors offers a feasible therapeutic approach, but challenges like hormone insensitivity exist.
- Exploring transcription factors beyond the nuclear receptor superfamily, such as STATs, presents a promising avenue for treating advanced cancers.
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