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Evaluation of the role of circular RNA (circ-FAF1) as a diagnostic biomarker for breast cancer in a cohort of Egyptian breast cancer patients.
Mol Biol Rep
January 2025
Department of Clinical Pathology, Faculty of Medicine, Alexandria University, Alexandria, Egypt.
Background: The identification of circulating potential biomarkers may help earlier diagnosis of breast cancer, which is critical for effective treatment and better disease outcomes. We aimed to study the role of circ-FAF1 as a diagnostic biomarker in female breast cancer using peripheral blood samples of these patients, and to investigate the relation between circ-FAF1 and different clinicopathological features of the included patients.
Methods And Results: This case-control study enrolled 60 female breast cancer patients and 60 age-matched healthy control subjects.
SGK3 promotes estrogen receptor-positive breast cancer proliferation by activating STAT3/ZMIZ2 pathway to stabilise β-catenin.
Br J Pharmacol
January 2025
Department of Pharmacology, College of Pharmacy, Chongqing Medical University, Chongqing, China.
Background And Purpose: Breast cancer is a leading threat to women's health, with approximately 70% of cases being estrogen receptor-positive. SGK3 is regulated by estrogen and is positively associated with estrogen receptor expression, although its molecular role remains unclear.
Experimental Approach: Proteomics was used to identify SGK3's downstream targets.
CXCR4 promotes tumor stemness maintenance and CDK4/6 inhibitors resistance in ER-positive breast cancer.
Breast Cancer Res
January 2025
Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China.
Background: CDK4/6 inhibitors have significantly improved the survival of patients with HR-positive/HER2-negative breast cancer, becoming a first-line treatment option. However, the development of resistance to these inhibitors is inevitable. To address this challenge, novel strategies are required to overcome resistance, necessitating a deeper understanding of its mechanisms.
View Article and Find Full Text PDFPhase I trial of hydroxychloroquine to enhance palbociclib and letrozole efficacy in ER+/HER2- breast cancer.
NPJ Breast Cancer
January 2025
Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
Endocrine therapy with CDK4/6 inhibitors is standard for estrogen receptor-positive, HER2-negative metastatic breast cancer (ER+/HER2- MBC), yet clinical resistance develops. Previously, we demonstrated that low doses of palbociclib activate autophagy, reversing initial G1 cell cycle arrest, while high concentrations induce off-target senescence. The autophagy inhibitor hydroxychloroquine (HCQ) induced on-target senescence at lower palbociclib doses.
View Article and Find Full Text PDFInvolvement of nuclear receptor corepressor 2 (NCOR2) in estrogen-induced repression of arcuate Kiss1 expression in female rats.
J Reprod Dev
January 2025
Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya 464-8601, Japan.
Hypothalamic arcuate (ARC) kisspeptin neurons are considered the gonadotropin-releasing hormone pulse generator in rats. In virgin rats, the expression of the ARC kisspeptin gene (Kiss1) is repressed by proestrous levels of estradiol-17β (high E2) but not by diestrous levels of E2 (low E2). In lactating rats, ARC Kiss1 expression is repressed by low E2 during late lactation.
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