Related Experiment Video
Updated: May 12, 2026

Sequencing Small Non-coding RNA from Formalin-fixed Tissues and Serum-derived Exosomes from Castration-resistant Prostate Cancer Patients
Published on: November 19, 2019
Transcriptional network of androgen receptor in prostate cancer progression
Ken-ichi Takayama1, Satoshi Inoue
1Department of Anti-Aging Medicine, The University of Tokyo, Tokyo, Japan.
Abstract:
The androgen receptor belongs to the nuclear receptor superfamily and functions as a ligand-dependent transcription factor. It binds to the androgen responsive element and recruits coregulatory factors to modulate gene transcription. In addition, the androgen receptor interacts with other transcription factors, such as forkhead box A1, and other oncogenic signaling pathway molecules that bind deoxyribonucleic acid and regulate transcription. Androgen receptor signaling plays an important role in the development of prostate cancer. Prostate cancer cells proliferate in an androgen-dependent manner, and androgen receptor blockade is effective in prostate cancer therapy. However, patients often progress to castration-resistant prostate cancer with elevated androgen receptor expression and hypersensitivity to androgen. Recently, comprehensive analysis tools, such as complementary DNA microarray, chromatin immunoprecipitation-on-chip and chromatin immunoprecipitation-sequence, have described the androgen-mediated diverse transcriptional program and gene networks in prostate cancer. Furthermore, functional and clinical studies have shown that some of the androgen receptor-regulated genes could be prognostic markers and potential therapeutic targets for the treatment of prostate cancer, particularly castration-resistant prostate cancer. Thus, identifying androgen receptor downstream signaling events and investigating the regulation of androgen receptor activity is critical for understanding the mechanism of carcinogenesis and progression to castration-resistant prostate cancer.
Insights
Androgen receptor signaling drives prostate cancer growth. Understanding its downstream effects is key to treating castration-resistant prostate cancer and identifying new therapeutic targets.
Area of Science:
- Molecular Biology
- Oncology
- Genetics
Background:
- The androgen receptor (AR) is a nuclear receptor and transcription factor crucial for prostate cancer development.
- AR signaling drives prostate cancer cell proliferation, and AR blockade is a primary therapy.
- Progression to castration-resistant prostate cancer (CRPC) involves elevated AR expression and hypersensitivity.
Purpose of the Study:
- To elucidate the diverse transcriptional programs regulated by androgen receptor in prostate cancer.
- To identify AR-regulated genes that serve as prognostic markers or therapeutic targets for CRPC.
Main Methods:
- Utilized comprehensive analysis tools including complementary DNA microarray, chromatin immunoprecipitation-on-chip, and chromatin immunoprecipitation-sequence.
- Conducted functional and clinical studies on AR-regulated genes.
Main Results:
- Characterized androgen-mediated transcriptional programs and gene networks in prostate cancer.
- Identified several AR-regulated genes with potential as prognostic markers and therapeutic targets for CRPC.
Conclusions:
- Identifying AR downstream signaling events is critical for understanding prostate cancer carcinogenesis and CRPC progression.
- AR-regulated genes represent promising avenues for novel CRPC therapies.
Related Concept Videos
mTOR Signaling and Cancer Progression
The mTOR pathway or the...
mTOR Signaling and Cancer Progression
The mTOR pathway or the...
Tumor Progression
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
Tumor Progression
Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
RNA Polymerase II Accessory Proteins
Master Transcription Regulators

