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Visible-light-induced CO-releasing properties and cytotoxicity of a Ru(II) carbonyl complex containing 2-(pyridin-2-yl)-quinoxaline.
Dalton Trans
January 2025
Department of Chemistry, Faculty of Science, Cairo University, Gamma Street, Giza, Cairo 12613, Egypt.
The photo-induced CO-releasing properties of the dark-stable complex [RuCl(CO)L] (L = 2-(pyridin-2-yl)quinoxaline) were investigated under 468 nm light exposure in the presence and absence of biomolecules such as histidine, calf thymus DNA and hen egg white lysozyme. The CO release kinetics were consistent regardless of the presence of these biomolecules, suggesting that they did not influence the CO release mechanism. The quinoxaline ligand demonstrated exceptional cytotoxicity against human acute monocytic leukemia cells (THP-1), with evidence of potential DNA damage ascertained by comet assay, while it remained non-toxic to normal kidney epithelial cells derived from African green monkey (Vero) cell lines.
View Article and Find Full Text PDFHigh CD38 expression defines a mitochondrial function-adapted CD8 T cell subset with implications for lung cancer immunotherapy.
Cancer Immunol Immunother
January 2025
Department of Respiratory and Critical Medicine, the First Affiliated Hospital of Soochow University, 899 Pinghai Road, Suzhou, 215006, China.
Despite identifying specific CD8 T cell subsets associated with immunotherapy resistance, the molecular pathways driving this process remain elusive. Given the potential role of CD38 in regulating CD8 T cell function, we aimed to investigate the accumulation of CD38CD8 T cells in lung cancer and explore its role in immunotherapy resistance. Phenotypic analysis of tumoral CD8 T cells from both lung cancer patients and immunotherapy-resistant preclinical models revealed that CD38-expressing CD8 T cells consist of CD38 and CD38 subsets.
View Article and Find Full Text PDFIDO1 inhibitor enhances the effectiveness of PD-1 blockade in microsatellite stable colorectal cancer by promoting macrophage pro-inflammatory phenotype polarization.
Cancer Immunol Immunother
January 2025
State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, China.
Microsatellite stable (MSS) colorectal cancer (CRC) is a subtype of CRC that generally exhibits resistance to immunotherapy, particularly immune checkpoint inhibitors such as PD-1 blockade. This study investigates the effects and underlying mechanisms of combining PD-1 blockade with IDO1 inhibition in MSS CRC. Bioinformatics analyses of TCGA-COAD and TCGA-READ cohorts revealed significantly elevated IDO1 expression in CRC tumors, correlating with tumor mutation burden across TCGA datasets.
View Article and Find Full Text PDFBasic Science and Pathogenesis.
Alzheimers Dement
December 2024
University of California, Los Angeles, CA, USA.
Background: Dementia exhibits abnormal network activity, including altered gamma frequency (30-100 Hz) in Alzheimer's disease (AD). A non-pharmacological, non-invasive approach to AD treatment involves stimulating sensory inputs using gamma band, with 40 Hz as the most effective in eliciting a robust EEG response. Light and sound stimulation at 40 Hz reduces AD pathology in mouse models and improves cognition in humans with AD.
View Article and Find Full Text PDFBasic Science and Pathogenesis.
Alzheimers Dement
December 2024
Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Background: The H1/H2 haplotype on 17q21.31 represent the foremost genetic factor contributing to the risk of progressive supranuclear palsy (PSP). Various structural forms of 17q21.
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