Logo Medical Science Monitor

Call: +1.631.470.9640
Mon - Fri 10:00 am - 02:00 pm EST

Contact Us

Logo Medical Science Monitor Logo Medical Science Monitor Logo Medical Science Monitor

04 October 2018 : Clinical Research

Expression of Androgen Receptor Variant 7 (AR-V7) in Circulated Tumor Cells and Correlation with Drug Resistance of Prostate Cancer Cells

Shuaibin Wang1AC, Sen Yang1BD, Cunjin Nan1CE, Yijun Wang1DF, Youhua He1EG, Haiqi Mu1DG

DOI: 10.12659/MSM.909669

Med Sci Monit 2018; 24: CLR7051-7056

Abstract

BACKGROUND: Prostate cancer is a common type of malignant tumor invading the male reproductive-urinary system, which has increasing incidence worldwide. Androgen receptor variant 7 (AR-V7) participates in regulating prostate cancer cell proliferation and gene expression. This study aimed to investigate the expression of AR-V7 in circulated tumor cells (CTCs) in patients with prostate cancer and to assess its correlation with drug sensitivity against enzalutamide or abiraterone.

MATERIAL AND METHODS: Blood samples of prostate cancer patients were collected for separating CTCs, in which mRNA expression level of full-length AR and AR-V7 was measured to analyze their correlation with enzalutamide or abiraterone resistance. Progression-free survival (PFS) of patients with different AR-V7 expression levels was compared. AR-V7 was overexpressed in transfected prostate cancer cells, and its effects on proliferation were analyzed by clonal formation assay.

RESULTS: qRT-PCR showed AR-V7 overexpression in a total of 13 patients; 76.92% of these patients developed drug resistance, the distal metastasis of which was significantly higher than that in the group with AR-V7 downregulation, with lower PFS (p<0.01). In cultured prostate cancer cells, AR-V7 upregulation resulted in a significantly higher clonal formation rate than in the control group with enzalutamide-containing medium (p<0.05).

CONCLUSIONS: In prostate cancer cells, AR-V7 expression is correlated with drug resistance, as AR-V7 upregulation leads to enhanced proliferation potency of cancer cells, indicating unfavorable prognosis of patients.

Keywords: Drug Resistance, Prostate, Prostatic Diseases

0 Comments

Weekly Editorial

18 October 2021 : Editorial

Editorial: Global Initiatives Support the Use and Regulation of Digital Health Technology During the COVID-19 Pandemic

Dinah V. Parums
Science Editor, Medical Science Monitor, International Scientific Information, Inc., Melville, NY, USA

DOI: 10.12659/MSM.935123

Med Sci Monit 2021; 27:e935123

SARS-CoV-2/COVID-19

11 October 2021 : Clinical Research

Clinical Features and Temporal Lung Radiographic Changes in 25 Patients Recovering from COVID-19 Pneumonia:...

Med Sci Monit In Press; DOI: 10.12659/MSM.933381  

08 September 2021 : Clinical Research

Acceptance of COVID-19 Vaccination and Its Associated Factors Among Cancer Patients Attending the Oncology ...

Med Sci Monit In Press; DOI: 10.12659/MSM.932788  

12 October 2021 : Review article

Silent Hypoxemia in Patients with COVID-19 Pneumonia: A Review

Med Sci Monit 2021; 27:e930776

In Press

18 Oct 2021 : Clinical Research

Adverse Side Effects Associated with Corticosteroid Therapy: A Study in 39 Patients with Generalized Myasth...

Med Sci Monit In Press; DOI: 10.12659/MSM.933296  

13 Oct 2021 : Clinical Research

Endovascular Repair of Thoracic Aorta Injury: 17 Years of Single-Center Experience

Med Sci Monit In Press; DOI: 10.12659/MSM.934479  

11 Oct 2021 : Clinical Research

Challenges for Polish Community Pharmacists in Provision of Services to Immigrants and Non-Polish-Speakers ...

Med Sci Monit In Press; DOI: 10.12659/MSM.933678  

11 Oct 2021 : Clinical Research

Epidemiology of Birth Defects in Eastern China and the Associated Risk Factors

Med Sci Monit In Press; DOI: 10.12659/MSM.933782  

Most Viewed Current Articles

20 Mar 2020 : Clinical Research

Social Capital and Sleep Quality in Individuals Who Self-Isolated for 14 Days During the Coronavirus Diseas...

DOI :10.12659/MSM.923921

Med Sci Monit 2020; 26:e923921

15 Apr 2020 : Clinical Research

Psychological Impact and Coping Strategies of Frontline Medical Staff in Hunan Between January and March 20...

DOI :10.12659/MSM.924171

Med Sci Monit 2020; 26:e924171

05 May 2020 : Review article

An Evidence Based Perspective on mRNA-SARS-CoV-2 Vaccine Development

DOI :10.12659/MSM.924700

Med Sci Monit 2020; 26:e924700

26 Apr 2020 : Clinical Research

Comparison of Prevalence and Associated Factors of Anxiety and Depression Among People Affected by versus P...

DOI :10.12659/MSM.924609

Med Sci Monit 2020; 26:e924609

Your Privacy

We use cookies to ensure the functionality of our website, to personalize content and advertising, to provide social media features, and to analyze our traffic. If you allow us to do so, we also inform our social media, advertising and analysis partners about your use of our website, You can decise for yourself which categories you you want to deny or allow. Please note that based on your settings not all functionalities of the site are available. View our privacy policy.

Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750