Interferon production was investigated in mice of CBA line with experimentally induced immunosuppression. With all types of treatment (irradiation, administration of hydrocortisone, cyclophosphane, ALS) the capacity of host cells for interferon production was shown to be reduced. Administration of biologically active thymus factor, thymostimulin, to experimental animals resulted in significant restoration of alpha/beta and gamma interferon production.
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Immunity
December 2024
Division of Oncogenomics, Oncode institute, the Netherlands Cancer Institute, Amsterdam, the Netherlands; Erasmus MC, Department of Genetics, Rotterdam University, Rotterdam, the Netherlands. Electronic address:
Prolonged exposure to interferon-gamma (IFNγ) and the associated increased expression of the enzyme indoleamine 2,3-dioxygenase 1 (IDO1) create an intracellular shortage of tryptophan in the cancer cells, which stimulates ribosomal frameshifting and tryptophan to phenylalanine (W>F) codon reassignments during protein synthesis. Here, we investigated whether such neoepitopes can be useful targets of adoptive T cell therapy. Immunopeptidomic analyses uncovered hundreds of W>F neoepitopes mainly presented by the HLA-A24:02 allele.
View Article and Find Full Text PDFCancer 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 PDFAlzheimers Dement
December 2024
Institute for Regenerative Medicine, Department of Cell Biology and Genetics, School of Medicine, Texas A&M University Health Science Center, College Station, Texas, USA., College Station, TX, USA.
Background: Current treatments for Alzheimer's disease (AD) lack disease-modifying interventions. Hence, novel therapies capable of restraining AD progression and maintaining better brain function for extended periods after the initial diagnosis have great significance. Extracellular vesicles (EVs) from human induced pluripotent stem cell (hiPSC)-derived neural stem cells (NSCs) are attractive in this context due to their robust antiinflammatory properties.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Xuanwu Hospital of Capital Medical University, Beijing, Beijing, China.
Background: Alzheimer's disease (AD), also known as senile dementia, is the most common degenerative disease of the central nervous system. Neuroinflammation is currently believed to be a crucial factor in the progression of AD, while its exact mechanism remains unclear.
Method: APP/PS1 AD mice were treated with a natural active ingredient tetrahydroxy stilbene glucoside (TSG) at 40 mg/kg/day and 80 mg/kg/day respectively for 5 consecutive months, and then the Morris water maze test (MWM) and the novel object recognition test were performed to assess the effect of TSG on the cognitive and memory ability of AD mice.
Alzheimers Dement
December 2024
University of Kansas Medical Center, Kansas City, KS, USA.
Background: Mitochondrial dysfunction is an early and prominent feature of Alzheimer's disease (AD). We have recently published that lower brain mitochondrial DNA copy number (mtDNAcn) is associated with increased risk of AD neuropathological change and reduced cognitive performance. Here, we addressed how mtDNAcn affects cell-type specific phenotypes.
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