We analyzed age-related defects in B cell populations from young and aged mice. Microarray analysis of bone marrow resident antibody secreting cells (ASCs) showed significant changes upon aging, affecting multiple genes, pathways and functions including those that play a role in immune regulation, humoral immune responses, chromatin structure and assembly, cell metabolism and the endoplasmic reticulum (ER) stress response. Further analysis showed upon aging defects in energy production through glucose catabolism with reduced oxidative phosphorylation. In addition aged B cells had increased levels of reactive oxygen-species (ROS), which was linked to enhanced expression of the co-inhibitor programmed cell death (PD)-1.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4924646 | PMC |
| http://dx.doi.org/10.18632/oncotarget.7958 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Quantitative proteomics in rat saliva stimulated with pilocarpine and isoprenaline.
Arch Oral Biol
December 2024
Department of Pharmacology, Faculty of Medicine, Jagiellonian University Medical College, 16 Grzegorzecka str, Kraków 31 531, Poland; Proteomics Laboratory, Centre for the Development of Therapies for Civilization and Age-Related Diseases, Jagiellonian University Medical College, Krakow, Poland. Electronic address:
Objective: Saliva is increasingly being recognized as a convenient and informative reservoir of proteins that could serve as indicators of various diseases. As the literature remains taciturn with regard to saliva collection methods in rodents, our objective was to provide the protocol for a comprehensive quantitative proteomic assessment of stimulated rat saliva.
Design: We applied the next-generation proteomic methodology (directDIA) to compare qualitatively and quantitatively stimulated rat saliva specimens obtained from pilocarpine alone and pilocarpine in combination with isoprenaline.
Immunosenescence and age-related immune cells: causes of age-related diseases.
Arch Pharm Res
December 2024
Laboratory of Pathology and Physiology, College of Pharmacy, Kangwon National University, 1, Kangwondaehak-gil, Chuncheon-si, Gangwon-do, 24341, South Korea.
Immunosenescence is a weakening of the immune system due to aging, characterized by changes in immune cells and dysregulated immune function. Age-related immune cells are increasing with aging. They are associated with chronic prolonged inflammation, causing tissue dysfunction and age-related diseases.
View Article and Find Full Text PDFReconsidering the usual suspects in age-related hematologic disorders: is stem cell dysfunction a root cause of aging?
Exp Hematol
December 2024
Division of Experimental Hematology, German Cancer Research Center (DKFZ), Heidelberg, Germany; Experimental Hematology Group, Heidelberg Institute for Stem Cell Technology and Experimental Medicine (HI-STEM), Heidelberg, Germany. Electronic address:
Aging exerts a profound impact on the hematopoietic system, leading to increased susceptibility to infections, autoimmune diseases, chronic inflammation, anemia, thrombotic events, and hematologic malignancies. Within the field of experimental hematology, the functional decline of hematopoietic stem cells (HSCs) is often regarded as a primary driver of age-related hematologic conditions. However, aging is clearly a complex multifaceted process involving not only HSCs but also mature blood cells and their interactions with other tissues.
View Article and Find Full Text PDFDYSREGULATION OF AUTOPHAGY IN PERIPHERAL BLOOD LEUCOCYTES IS A FACTOR IN THE DEVELOPMENT OF INFLAMMAGING IN IMMUNOCOMPROMISED PERSONS ON THE EXAMPLE OF THE SERVICEMEN OF THE DEFENSE FORCES OF UKRAINE AND CLEAN-UP WORKERS OF THE CHORNOBYL ACCIDENT.
Probl Radiac Med Radiobiol
December 2024
State Institution «National Research Center for Radiation Medicine, Hematology and Oncology of the National Academy of Medical Sciences of Ukraine», 53 Yuriia Illienka Str., Kyiv, 04050, Ukraine.
Objective: To assess the functional state and age-related characteristics of autophagy in peripheral blood leukocytes as a risk factor for the development of inflammaging using the example of the servicemen of the DefenseForces of Ukraine and clean-up workers of the Chornobyl accident.
Materials And Methods: A total of 103 male patients aged 28-77 (56,48 ∓ 9,05) years were examined. They included: the main group - 23 servicemen of the Defense Forces of Ukraine aged 44-59 (50,21 ∓ 5,13) years; the comparison group - 57 clean-up workers of the Chornobyl accident aged 56-63 (60,31 ∓ 1,78) years; and the control group -23 civilians aged 28-77 (53,26 ∓ 15,98) years.
Decoding Brain Development and Aging: Pioneering Insights From MRI Techniques.
Invest Radiol
October 2024
From the Department of Radiology, Juntendo University School of Medicine, Tokyo, Japan (A.H., S.K., J.K., M.N., W.U., S.F., T.A., A.W., K.K., S.A.); Department of Radiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan (A.H., M.N., S.F.); Polytechnique Montréal, Montreal, Quebec, Canada (S.N.); Montreal Heart Institute, University of Montreal, Montreal, Quebec, Canada (S.N.); and Center for Advanced Interdisciplinary Research, Ss. Cyril and Methodius University in Skopje, Skopje, North Macedonia (S.N.).
The aging process induces a variety of changes in the brain detectable by magnetic resonance imaging (MRI). These changes include alterations in brain volume, fluid-attenuated inversion recovery (FLAIR) white matter hyperintense lesions, and variations in tissue properties such as relaxivity, myelin, iron content, neurite density, and other microstructures. Each MRI technique offers unique insights into the structural and compositional changes occurring in the brain due to normal aging or neurodegenerative diseases.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!