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Human Epidermal Growth Factor Receptor 2 Loss Following Treatment with Trastuzumab Deruxtecan in Patients with Metastatic Breast Cancer.
Clin Cancer Res
January 2025
The University of Texas MD Anderson Cancer Center, Houston, TX, United States.
Purpose: Trastuzumab deruxtecan (T-DXd) is currently approved for treating metastatic breast cancer (MBC) which is HER2-positive (immunohistochemistry [IHC] score of 3+ or ISH positivity) or HER2-low (IHC score of 1+ or IHC 2+/ISH negative), as well as for HER2-positive gastric cancer, HER2-mutant lung cancer, and HER2 overexpressing solid tumors. Given the increasing utilization of T-DXd, we sought to determine how HER2 receptor status might change following T-DXd therapy.
Design: We retrospectively reviewed patients with MBC who received T-DXd at The University of Texas MD Anderson Cancer Center.
Itaconate mechanism of action and dissimilation in .
Proc Natl Acad Sci U S A
January 2025
Centre for Tuberculosis Research, Tuberculosis Research Laboratory, Translational Health Science and Technology Institute, National Capital Region Biotech Science Cluster 3rd Milestone, Faridabad, Haryana 121001, India.
Itaconate, an abundant metabolite produced by macrophages upon interferon-γ stimulation, possesses both antibacterial and immunomodulatory properties. Despite its crucial role in immunity and antimicrobial control, its mechanism of action and dissimilation are poorly understood. Here, we demonstrate that infection of mice with increases itaconate levels in lung tissues.
View Article and Find Full Text PDFBCL6 coordinates muscle mass homeostasis with nutritional states.
Proc Natl Acad Sci U S A
January 2025
Gene Expression Laboratory, Salk Institute, La Jolla, CA 92037-1002.
Nutritional status is a determining factor for growth during development and homeostatic maintenance in adulthood. In the context of muscle, growth hormone (GH) coordinates growth with nutritional status; however, the detailed mechanisms remain to be fully elucidated. Here, we show that the transcriptional repressor B cell lymphoma 6 (BCL6) maintains muscle mass by sustaining GH action.
View Article and Find Full Text PDFSuper-Resolution Fluorescence Imaging Reveals the Mechanism of NRP1 Clustering on Non-Small-Cell Lung Cancer Membranes.
Anal Chem
January 2025
Department of Thoracic Surgery, The Second Hospital of Jilin University, Changchun, Jilin 130041, P. R. China.
Neuropilin 1 (NRP1) is upregulated in various types of malignant tumors, especially non-small-cell lung cancer (NSCLC). However, the precise mechanisms for membrane localization and regulation are not fully understood. Observations from super-resolution microscopy have revealed that NRP1 tends to form nanoscale clusters on the cell membrane, with these clusters varying significantly in size and density across different regions.
View Article and Find Full Text PDFProbing the effects of dextran-coated CeO nanoparticles on lung fibroblasts using multivariate single-cell Raman spectroscopy.
Nanotoxicology
January 2025
Institute of Physics Belgrade, University of Belgrade, Belgrade, Serbia.
In this study, we investigated the cytotoxic effect of highly soluble dextran-coated CeO nanoparticles on human fetal lung fibroblasts MRC-5. We examined individual nanoparticle-treated cells by Raman spectroscopy and analyzed Raman spectra using non-negative principal component analysis and k-means clustering. In this way, we determined dose-dependent differences between treated cells, which were reflected through the intensity change of lipid, phospholipid and RNA-related Raman modes.
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