The lifespan of humans has increased drastically over the last decades; considerable effort has been applied to delineate the mechanisms behind aging in order to find strategies for longevity. As the benefits of the gained knowledge might extend to diseases, where accelerated aging
is suspected, the role of aging in the systemic autoimmune disease Systemic Lupus Erythematosus (SLE) is of particular interest. In this review the immunological similarities of SLE and aging are analyzed on three levels: the clinical, the cellular and the molecular, in order to find possible
common pathological mechanisms. Common clinical features (e.g. increased infection rates, incidence of tumors and cardiovascular diseases) of SLE-patients and elderly individuals and shared characteristics of immuno-senescence and SLE are identified. These similarities are strongest in the
adaptive immune system, where terminally differentiated T-cells and an immunological risk profile are found in both conditions. Also the aging innate immune system has overlapping features with SLE, exemplified by a generally lowered phagocytic capacity. However, great disparities between
the aging immune system and SLE become apparent on a closer look, affecting numbers, phenotype and function of most immune cells, ranging from NETosis by granulocytes to the mechanisms underlying abnormal IL-2 production by T-cells. On the molecular level, also the increased presence of aging
mechanisms like telomere attrition, DNA damage, autophagy and the characteristics of the mTOR pathway in SLE, possibly contributing to the shared changes on the cellular and clinical level are elaborated. The possible implications thereof concern existing (hydroxychloroquine, rapamycine, Glucocorticoids)
as well as novel therapeutic strategies targeting more specific pathways which might rapidly reach the clinical arena.
Overall a differential view on the similarities of aging and SLE and possible consequences is presented.
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systemic lupus erythematosus;
Document Type: Research Article
Publication date: July 1, 2015
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Current Aging Science publishes frontier review and experimental articles in all areas of aging and age-related research that may influence longevity. This multidisciplinary journal will help in understanding the biology and mechanism of aging, genetics, pathogenesis, intervention of normal aging process and preventive strategies of age-related disorders. The journal publishes objective reviews written by experts and leaders actively engaged in research using cellular, clinical, molecular, and animal models, including lower organism models (e.g., yeast, Caenorhabditis elegans and Drosophila). In addition to the affect of aging on integrated systems, the journal also covers original articles on recent research in fast emerging areas of adults stem cells, brain imaging, calorie restriction, immunosenescence, molecular diagnostics, pharmacology and clinical aspects of aging. Manuscripts are encouraged that relate to developmental programming of aging and the synergistic mechanism of aging with cardiovascular diseases, obesity and neurodegenerative disorders.
Book reviews, meeting reports and letters-to-the-editor and drug clinical trial studies are also published. The journal is essential reading for researchers, educators and physicians with interest in aging, age-related dementia and Alzheimer's disease and longevity. Current Aging Science provides a comprehensive coverage of the current state of aging research for gerontologists, neuroscientists, clinicians, health science planners, granting agencies and pharmaceutical scientists.
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