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miRNA Expression Analyses in Prostate Cancer Clinical Tissues
Published on: September 8, 2015
Interactions between androgen receptor signaling and other molecular pathways in prostate cancer progression: Current
Chiara Pisano1, Marcello Tucci2, Rosario Francesco Di Stefano1
1Department of Oncology, University of Turin, at Division of Medical Oncology, San Luigi Gonzaga Hospital, Regione Gonzole 10, 10043, Orbassano, Turin, Italy.
Abstract:
In last years several improvements have been made in the management of prostate cancer (PCa). Androgen receptor (AR) is considered the main driver in PCa growth and progression and most drugs are directed against AR pathway. Once PCa spreads outside the prostate, androgen deprivation therapy (ADT) represents the cornerstone of treatment in hormone-sensitive prostate cancer (HSPC). Unfortunately, the response is only transient and most patients eventually develop castration-resistant prostate cancer (CRPC). Most resistance mechanisms depend on maintenance of AR signalling in castration environment. Recent discoveries of multiple growth-promoting and survival pathways in PCa suggest the importance of alternative mechanisms involved in disease progression, such as DNA damage response pathway, PTEN/PI3K/AKT/mTOR pathway, cell cycle pathway, WNT pathway, TMPRSS2/ETS fusion, neuroendocrine pattern and immune system response. In this review, we discuss the interplay between AR signaling and other molecular pathways involved in PCa pathogenesis and their therapeutic implication in advanced disease.
Insights
Prostate cancer (PCa) treatment faces challenges with resistance to androgen deprivation therapy (ADT). This review explores how AR signaling interacts with other pathways, offering insights into advanced PCa progression and new therapeutic strategies.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Research
Background:
- Androgen receptor (AR) signaling drives prostate cancer (PCa) growth.
- Androgen deprivation therapy (ADT) is a primary treatment for hormone-sensitive PCa (HSPC).
- Resistance to ADT leads to castration-resistant prostate cancer (CRPC), often due to sustained AR signaling.
Purpose of the Study:
- To review the interplay between AR signaling and other molecular pathways in PCa.
- To discuss mechanisms of resistance to ADT in advanced prostate cancer.
- To highlight therapeutic implications for advanced PCa.
Main Methods:
- Literature review of recent advancements in prostate cancer management.
- Analysis of molecular pathways involved in PCa pathogenesis.
- Discussion of therapeutic strategies targeting AR signaling and alternative pathways.
Main Results:
- AR signaling is central to PCa, but alternative pathways are crucial for progression.
- Mechanisms of resistance to ADT involve sustained AR signaling and activation of other pathways.
- Multiple pathways, including DNA damage response, PI3K/AKT/mTOR, and immune response, are implicated in CRPC.
Conclusions:
- Understanding the crosstalk between AR and other pathways is vital for treating advanced PCa.
- Targeting AR signaling in combination with other pathways may overcome treatment resistance.
- Further research into these interactions can lead to novel therapeutic approaches for CRPC.
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