Background: This study aimed to investigate cabazitaxel efficacy in a model for docetaxel-resistant prostate cancer cells and to evaluate the involvement of ATP-cassette binding protein 4 (ABCC4) with regard to multidrug resistance.
Materials And Methods: Docetaxel and cabazitaxel sensitivity was measured in PC3 and R3327-MATLyLu (MLL) cell lines, using the sulforhodamine B (SRB) assay. ABCC4 expression was examined by western blotting and its functional involvement in drug sensitivity by blocking with MK571 inhibitor.
Results: The docetaxel-resistant MLL cells (4.5-fold compared to cabazitaxel; p<0.001) were shown to express high levels of ABCC4, while non-resistant PC3 cells had no detectable ABCC4 expression. Functional inhibition of ABCC4 in MLL cells resulted in a two-fold decrease in effective concentration of docetaxel and had no effect on toxicity of cabazitaxel.
Conclusion: Cabazitaxel showed an improved therapeutic efficacy over docetaxel in ABCC4-expressing prostate cancer cells. ABCC4 appears to be an important determinant of docetaxel resistance, since its inhibition almost completely reversed resistance.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
[Treatment algorithm following first-line therapy failure in metastatic prostate cancer].
Urologie
January 2025
Klinik für Urologie, Campus Lübeck, Universitätsklinikum Schleswig-Holstein, Lübeck, Deutschland.
This article provides a comprehensive overview of the current treatment options for patients with metastatic castration-resistant prostate cancer (mCRPC) following the failure of first-line therapy. Although significant progress has been made in the primary treatment of hormone-sensitive prostate cancer, the management of mCRPC remains a clinical challenge. The article outlines the diagnostic criteria for mCRPC, which can be confirmed through biochemical progression and imaging techniques.
View Article and Find Full Text PDFComparison of two alternative sequences with cabazitaxel and 177Lu-PSMA-617 in metastatic castration-resistant prostate cancer: A retrospective multicenter study (LuCaS).
Eur J Cancer
January 2025
Ankara University School of Medicine, Department of Medical Oncology, Ankara, Turkey; Ankara University Cancer Institute, Ankara, Turkey. Electronic address:
Background: Cabazitaxel and Lu-PSMA-617 have been shown to improve survival in patients with metastatic castration-resistant prostate cancer (mCRPC) previously treated with docetaxel and androgen receptor pathway inhibitors (ARPI). we aimed to evaluate the impact of sequencing cabazitaxel and Lu-PSMA-617 on survival outcomes in patients with mCRPC.
Patients And Methods: This is a retrospective, multicenter, cohort study which included patients with mCRPC who received sequential treatment with Lu-PSMA-617 and cabazitaxel between January 2015 and December 2023.
Synergistic Anti-tumorigenic Effects of Cabazitaxel and Usnic Acid Combination on Metastatic Castration-Resistant Prostate Cancer Cells.
Anticancer Agents Med Chem
January 2025
Department, Bursa, Faculty of Medicine, Medical Biology, Bursa Uludag University, Turkey.
Background: Prostate cancer (PC) affects millions of men, causing high mortality rates. Despite the treatment approaches, the options for metastatic castration-resistant prostate cancer (mCRPC), a lethal form of advanced PC, are still limited. Cabazitaxel (Cbx) is the last taxane-derived chemotherapeutic approved for Docetaxel- resistant mCRPC patients.
View Article and Find Full Text PDFCurrent Status of Sequential Treatment for Castration-resistant Prostate Cancer: A Retrospective Analysis.
Cancer Diagn Progn
January 2025
Department of Urology, Showa University School of Medicine, Tokyo, Japan.
Background/aim: Although multiple treatments are available for metastatic castration-resistant prostate cancer, data to determine the optimal treatment sequence are limited. This study aimed to investigate the current status of drug therapy for castration-resistant prostate cancer and clarify the sequential treatment in actual clinical practice.
Patients And Methods: This retrospective study included 425 patients diagnosed with castration-resistant prostate cancer at Showa University Hospital and affiliated hospitals between January 2014 and December 2021, who were treated with any of the following four drugs: novel androgen receptor signal inhibitors (abiraterone acetate and enzalutamide) and anticancer drugs (docetaxel and cabazitaxel).
Evolocumab in metastatic castration-resistant prostate cancer: study protocol for a single-arm, phase II trial, and initial experience with use of a validated lipid biomarker to direct therapy.
Ther Adv Med Oncol
December 2024
Medical Oncology, Chris O'Brien Lifehouse, 119-143 Missenden Rd, Camperdown, NSW 2050, Australia.
Background: Despite advances in the treatment of metastatic castration-resistant prostate cancer (mCRPC), primary and secondary resistance to current therapies remains. Elevated circulating sphingolipids are associated with poor outcomes in patients with mCRPC, including therapeutic resistance and shorter overall survival. PCPro is a clinically accessible, regulatory compliant plasma lipid biomarker of poor prognosis in mCRPC, which incorporates prognostic sphingolipids.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!