TRAIL induced apoptosis of tumor cells is currently entering phase II clinical settings, despite the fact that not all tumor types are sensitive to TRAIL. TRAIL resistance in ovarian carcinomas can be caused by a blockade upstream of the caspase 3 signaling cascade. We explored the ability of restriction endonucleases to directly digest DNA in vivo, thereby circumventing the caspase cascade. For this purpose, we delivered enzymatically active endonucleases via the cationic amphiphilic lipid SAINT-18((R)):DOPE to both TRAIL-sensitive and insensitive ovarian carcinoma cells (OVCAR and SKOV-3, respectively). Functional nuclear localization after delivery of various endonucleases (BfiI, PvuII and NucA) was indicated by confocal microscopy and genomic cleavage analysis. For PvuII, analysis of mitochondrial damage demonstrated extensive apoptosis both in SKOV-3 and OVCAR. This study clearly demonstrates that cellular delivery of restriction endonucleases holds promise to serve as a novel therapeutic tool for the treatment of resistant ovarian carcinomas.
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http://dx.doi.org/10.1016/j.yexcr.2009.06.011 | DOI Listing |
BMJ Case Rep
January 2025
Cardiology, East Cheshire NHS Trust, Macclesfield, UK.
Non-bacterial thrombotic endocarditis (NBTE) is characterised by sterile vegetations on heart valves and often emerges in hypercoagulable states like malignancy. It is frequently underdiagnosed and only comes to light during postmortem examination. Early diagnosis and treatment with anticoagulation can help lower mortality.
View Article and Find Full Text PDFCell Transplant
January 2025
Department of Obstetrics and Gynecology, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Tzu Chi University, Hualien.
Leucine-rich repeat-containing G-protein-coupled receptors regulate stem cell activity and tissue homeostasis within female reproductive organs, primarily through their interaction with the Wnt/β-catenin signaling pathway. LGR4-6 are increasingly recognized for their roles in organ development, regeneration, and cancer. This review aims to provide a comprehensive overview of the roles of LGR4-6 in female reproductive organs, highlighting their significance in normal physiology and disease states, specifically in the context of ovarian cancer.
View Article and Find Full Text PDFBJS Open
December 2024
Department of Obstetrics and Gynecology, and Catharina Cancer Institute, Catharina Hospital, Eindhoven, The Netherlands.
Background: Ovarian cancer is the leading cause of death among gynaecological cancers. The identification of the fallopian tube epithelium as the origin of most ovarian cancers introduces a novel prevention strategy by removing the fallopian tubes during an already indicated abdominal surgery for another reason, also known as an opportunistic salpingectomy. This preventive opportunity is evidence based, recommended and established at the time of gynaecologic surgery in many countries worldwide.
View Article and Find Full Text PDFSci Rep
January 2025
Department of Obstetrics and Gynecology, Center for Reproductive Medicine, Affiliated Hospital of North Sichuan Medical College, Nanchong, 637000, Sichuan, People's Republic of China.
Lysine acetyltransferase 2B (KAT2B) plays a crucial role in epigenetic regulation and tumor pathogenesis. Our study investigates KAT2B's function in epithelial ovarian cancer (EOC) using in vivo and in vitro methods. Immunohistochemistry showed the KAT2B expression in EOC tissues.
View Article and Find Full Text PDFInt J Gynecol Pathol
January 2025
Department of Pathology, Division of Women's and Perinatal Pathology, Brigham and Women's Hospital, Harvard Medical School.
Ovarian clear cell carcinoma (OCCC) is an endometriosis-related neoplasm, in which traditional histologic grading does not show prognostic significance. Tumor budding was associated with poorer outcomes in OCCC in previous studies. We aimed to evaluate the prognostic significance of tumor budding in OCCC in an independent cohort.
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