Related Experiment Video

Updated: Aug 5, 2025

Generation of Prostate Cancer Cell Models of Resistance to the Anti-mitotic Agent Docetaxel
06:44

Generation of Prostate Cancer Cell Models of Resistance to the Anti-mitotic Agent Docetaxel

Published on: September 8, 2017

13.4K

Sympathetic β2-adrenergic receptor blockade overcomes docetaxel resistance in prostate cancer

Mi Zhang1, Fangfang Chen1, Xueqing Sun2

  • 1Institution of Life Science, Chongqing Medical University, Chongqing, China.

Biochemical and Biophysical Research Communications
|March 29, 2023
PubMed
Abstract

Insights

Targeting the beta-2 adrenergic receptor (β2-AR) enhances docetaxel effectiveness in resistant prostate cancer by promoting apoptosis and autophagy. This suggests β2-AR inhibitors could improve chemotherapy outcomes.

Area of Science:

  • Oncology
  • Molecular Biology
  • Pharmacology

Background:

  • Docetaxel resistance in prostate cancer is a major clinical challenge with limited therapeutic options.
  • The role of the beta-2 adrenergic receptor (β2-AR) in chemotherapy resistance, particularly docetaxel resistance, remains poorly understood.

Purpose of the Study:

  • To investigate the role of β2-AR in docetaxel-resistant prostate cancer.
  • To elucidate the molecular mechanisms by which β2-AR influences docetaxel sensitivity, focusing on apoptosis and autophagy.

Main Methods:

  • Analyzed β2-AR expression in prostate tissues using GEO database.
  • Developed docetaxel-resistant prostate cancer cell lines via dose-escalation.
  • Investigated the impact of β2-AR on docetaxel sensitivity using flow cytometry, western blot, and immunoprecipitation assays.
  • Examined the interplay between apoptosis and autophagy pathways.

Main Results:

  • Restraining β2-AR activity sensitized prostate cancer cells to docetaxel, reducing resistance.
  • β2-AR regulates docetaxel response through apoptosis (caspase signaling) and autophagy (Atg5/AMPK/mTOR pathway).
  • β2-AR influences the crosstalk between apoptosis and autophagy via p38 MAPK and JNK/c-Jun/FOXO3a signaling.

Conclusions:

  • Inhibiting β2-AR induces autophagy and apoptosis, enhancing docetaxel efficacy in castration-resistant prostate cancer.
  • Combination therapy with β2-AR inhibitors and autophagy inhibitors presents a potential strategy to overcome docetaxel resistance.
Keywords:
Apoptosis and autophagyChemotherapy resistanceProstate cancerβ(2)-adrenergic receptor

More Related Videos

A Bioluminescent and Fluorescent Orthotopic Syngeneic Murine Model of Androgen-dependent and Castration-resistant Prostate Cancer07:25

A Bioluminescent and Fluorescent Orthotopic Syngeneic Murine Model of Androgen-dependent and Castration-resistant Prostate Cancer

Published on: March 6, 2018

13.2K
Live Imaging to Study Microtubule Dynamic Instability in Taxane-resistant Breast Cancers06:02

Live Imaging to Study Microtubule Dynamic Instability in Taxane-resistant Breast Cancers

Published on: February 20, 2017

7.6K

Related Concept Videos

Treatment Resistant Cancers02:56

Treatment Resistant Cancers

Cancer is the second leading cause of death in the United States. A cancer cell is genetically unstable and hence can mutate faster. They can also modify their microenvironment and escape immune surveillance. The difficulties in treating cancer are further compounded by the emergence of rapid resistance to anticancer drugs. The most common ways to attain resistance in cancer cells include alteration in drug transport and metabolism, modification of drug target, elevated DNA damage response, or...
3.4K
Adrenergic Antagonists: Pharmacological Actions of ɑ-Receptor Blockers01:22

Adrenergic Antagonists: Pharmacological Actions of ɑ-Receptor Blockers

α-Adrenergic antagonists, known as α-blockers, exert their effects by inhibiting α-adrenoceptors, leading to specific physiological actions. α1-blockers and α2-blockers have distinct pharmacological actions and therapeutic applications.
α1-blockers: These drugs inhibit α1-adrenoceptors on smooth muscle cells, resulting in vasodilation. This vasodilation lowers blood pressure, making α1-blockers valuable in treating hypertension. Additionally,...
896
Targeted Cancer Therapies02:57

Targeted Cancer Therapies

The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against...
7.7K
Desensitization and Tachyphylaxis01:20

Desensitization and Tachyphylaxis

Tachyphylaxis is described as a rapid decrease in response to a drug after repeated or continuous administration of the same drug dose. It is a phenomenon where the body becomes less responsive to a particular substance or intervention over time, requiring higher doses or stronger interventions to achieve the same effect. It results from adaptive changes in the body's receptors, signaling pathways, or physiological processes that occur in response to prolonged exposure to a stimulus.
1.9K
Adrenergic Antagonists: Pharmacological Actions of β-Receptor Blockers01:27

Adrenergic Antagonists: Pharmacological Actions of β-Receptor Blockers

β-receptor blockers significantly impact the cardiovascular system by counteracting catecholamine-induced sympathetic responses. These medications decrease heart rate, contractility, and cardiac output, potentially leading to cardiac depression, life-threatening bradycardia, and death. Therapeutically, β-blockers function as mild antihypertensives and are utilized in treating angina pectoris and cardiac arrhythmias. However, nonselective β-blockers inhibit β2-receptors in...
905
Drugs that Stabilize Microtubules01:15

Drugs that Stabilize Microtubules

Microtubules are dynamic structures that undergo cycles of catastrophe and rescue. The microtubules play a central role in cell division by forming the spindle apparatus for segregating the chromosomes. This makes them ideal targets for regulating dividing cells in tumors and malignant cancer cells. Microtubule stabilizing drugs help stabilize the microtubule formation and promote its polymerization. Paclitaxel was the first microtubule stabilizing agent used as anticancer drug in chemotherapy...
2.1K