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Alzheimers Dement
December 2024
Good T Cells, Seoul, Mapo-gu, Korea, Republic of (South); YONSEI University, Seoul, Seodaemun-gu, Korea, Republic of (South).
Background: Neurodegenerative diseases, including Alzheimer's disease (AD), have been long thought to be independent of the peripheral immune system, but their pathogenesis status is functionally influenced by various T cell subsets in the periphery. Especially Treg cells are emerging as an important dynamic population in the brain, but the detailed immunological molecular and cellular processes are poorly characterized METHOD: We reported that the cell surface protein Lrig1 is enriched in Treg cells and is an essential regulator of the functions of Treg cells in vitro and in vivo. To evaluate the functional importance of Treg cells in AD pathogenesis, the modulating mAb specific to Lrig1 (GTC 310-01) via intravenous injection route was administered into 5xFAD or 6xTg mice, the genetic mouse model of AD, and the various AD symptoms were investigated.
View Article and Find Full Text PDFAdvances on the Role of Lung Macrophages in the Pathogenesis of Chronic Obstructive Pulmonary Disease in the Era of Single-Cell Genomics.
Int J Med Sci
January 2025
Department of Respiratory and Critical Medicine, the Eighth Affiliated Hospital, Sun Yat-Sen University, Shenzhen 518000, Guangdong Province, China.
Chronic Obstructive Pulmonary Disease (COPD) is a heterogeneous respiratory disorder characterized by persistent airflow limitation. The diverse pathogenic mechanisms underlying COPD progression remain incompletely understood. Macrophages, serving as the most representative immune cells in the respiratory tract, constitute the first line of innate immune defense and maintain pulmonary immunological homeostasis.
View Article and Find Full Text PDFInborn errors of immunity (primary immunodeficiencies).
Allergy Asthma Clin Immunol
January 2025
Division of Allergy and Clinical Immunology, Department of Pediatrics, Montreal Children's Hospital, McGill University Health Centre, Montreal, QC, Canada.
Primary immunodeficiencies (PID), now often referred to as inborn errors of immunity (IEI), are a large heterogeneous group of disorders that result from deficiencies in immune system development and/or function. IEIs can be broadly classified as disorders of adaptive immunity (e.g.
View Article and Find Full Text PDFIntra-tumoral sphingobacterium multivorum promotes triple-negative breast cancer progression by suppressing tumor immunosurveillance.
Mol Cancer
January 2025
Foshan Maternity and Child Healthcare Hospital; School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, 515150, China.
Background: Intratumor-resident bacteria represent an integral component of the tumor microenvironment (TME). Microbial dysbiosis, which refers to an imbalance in the bacterial composition and bacterial metabolic activities, plays an important role in regulating breast cancer development and progression. However, the impact of specific intratumor-resident bacteria on tumor progression and their underlying mechanisms remain elusive.
View Article and Find Full Text PDFβ-Glucan reprograms neutrophils to promote disease tolerance against influenza A virus.
Nat Immunol
January 2025
Department of Medicine, Department of Pathology, Department of Microbiology & Immunology, McGill University Health Centre, McGill International TB Centre, Meakins Christie Laboratories, McGill University, Montréal, Québec, Canada.
Disease tolerance is an evolutionarily conserved host defense strategy that preserves tissue integrity and physiology without affecting pathogen load. Unlike host resistance, the mechanisms underlying disease tolerance remain poorly understood. In the present study, we investigated whether an adjuvant (β-glucan) can reprogram innate immunity to provide protection against influenza A virus (IAV) infection.
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