Triple-negative breast cancer (TNBC) presents a significant challenge in oncology due to its aggressive nature and limited targeted therapeutic options. This study explores the potential of autocrine motility factor (AMF) and an AMF-derived peptide as novel treatments for TNBC. AMF, primarily secreted by neoplastic cells, plays a crucial role in cancer cell motility, metastasis, and proliferation. The research demonstrates that AMF and its derived peptide inhibit TNBC cell proliferation by modulating cellular migration, redox homeostasis, apoptotic pathways, and drug efflux mechanisms. Dose-dependent antiproliferative effects were observed across three TNBC cell lines, with higher concentrations impairing cellular migration. Mechanistic studies revealed decreased glucose-6-phosphate dehydrogenase expression and elevated reactive oxygen species production, suggesting redox imbalance as a primary mediator of apoptosis. Combination studies with conventional therapeutics showed near-complete eradication of resistant TNBC cells. The observed reduction in p53 levels and increased intranuclear doxorubicin accumulation highlight the AMF/AMF peptide's potential as multidrug resistance modulators. This study underscores the promise of using AMF/AMF peptide as a novel therapeutic approach for TNBC, addressing current treatment limitations and warranting further investigation.
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http://dx.doi.org/10.3390/ijms252111714 | DOI Listing |
Int J Mol Sci
November 2024
Department of Neurosurgery, University of Colorado, Anschutz Medical Campus, Aurora, CO 80045, USA.
Chordomas are rare, generally slow-growing spinal tumors that nonetheless exhibit progressive characteristics over time, leading to malignant phenotypes and high recurrence rates, despite maximal therapeutic interventions. The tumors are notoriously resistant to therapies and are often located in regions that complicate achieving gross total resections. Cell lines from these tumors are rare as well.
View Article and Find Full Text PDFGen Comp Endocrinol
December 2024
University of Nebraska-Lincoln, Department of Animal Science, Lincoln, NE 68583-0908, United States. Electronic address:
The second form of gonadotropin-releasing hormone (GnRH-II) and its receptor (GnRHR-II) are abundantly produced within the porcine testis and immunolocalize within the seminiferous tubules, suggesting a role in spermatogenesis and/or sperm function. The objective of this study was to quantify GnRH-II and GnRHR-II abundance within boar reproductive tract tissues and examine their role in porcine sperm function. Immunoblotting revealed GnRHR-II abundance was 12-fold greater (P < 0.
View Article and Find Full Text PDFGene
February 2025
Laboratory Medicine, First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi Province 341000, China; The First School of Clinical Medicine, Gannan Medical University, Ganzhou, Jiangxi Province 341000, China. Electronic address:
Background: Diabetic nephropathy (DN) is one of the most common and serious microvascular complications associated with diabetes. DN is the leading contributor to the majority of cases of end-stage renal disease (ESRD). Small extracellular vesicles (sEVs) can transport various genetic materials to recipient cells.
View Article and Find Full Text PDFBreast Cancer Res
November 2024
Department of Pathology Case, Western Reserve University, Cleveland, OH, 44106, USA.
Background: Patients with Triple Negative Breast Cancer (TNBC) currently lack targeted therapies, and consequently face higher mortality rates when compared to patients with other breast cancer subtypes. The tumor microenvironment (TME) cytokine Oncostatin M (OSM) reprograms TNBC cells to a more stem-like/mesenchymal state, conferring aggressive cancer cell properties such as enhanced migration and invasion, increased tumor-initiating capacity, and intrinsic resistance to the current standards of care. In contrast to OSM, Interferon-β (IFN-β) promotes a more differentiated, epithelial cell phenotype in addition to its role as an activator of anti-tumor immunity.
View Article and Find Full Text PDFNan Fang Yi Ke Da Xue Xue Bao
October 2024
School of Stomatology, Wannan Medical College, Wuhu 241002, China.
Objective: To investigate whether cisplatin induces tumor necrosis factor-α (TNF-α) secretion in human head and neck squamous cell carcinoma (HNSCC) cells to trigger RIP1/RIP3/MLKL-dependent necroptosis of the cells.
Methods: HNSCC cell lines HN4 and SCC4 treated with cisplatin (CDDP) or the combined treatment with CDDP and z-VAD-fmk (a caspase inhibitor) or Nec-1 (a necroptosis inhibitor) for 24 h were examined for changes in cell viability using CCK8 assay and expressions of caspase-8 and necroptosis pathway proteins (RIP1/RIP3/MLKL) using Western blotting. The changes in migration of the cells were assessed with cell scratch assay, and the expressions of epithelial-mesenchymal transition (EMT) marker proteins N-cadherin, vimentin, and E-cadherin as well as the expressions of NF-κB (p65) and TNF-α were detected with Western blotting.
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