Suppression of thrombospondin-1-mediated inflammaging prolongs hematopoietic health span.

Pradeep Ramalingam, Michael C Gutkin, Michael G Poulos, Agatha Winiarski, Arianna Smith, Cody Carter, Chelsea Doughty, Taylor Tillery, David Redmond, Ana G Freire, Jason M Butler

Division of Hematology and Oncology, Department of Medicine, University of Florida, Gainesville, FL 32610, USA. · pubmed

Paper

Abstract

Chronic low-grade inflammation observed in older adults, termed inflammaging, is a common feature underlying a multitude of aging-associated maladies including a decline in hematopoietic activity. However, whether suppression of inflammaging can preserve hematopoietic health span remains unclear, in part because of a lack of tools to measure inflammaging within hematopoietic stem cells (HSCs). Here, we identify thrombospondin-1 (Thbs1) as an essential regulator of inflammaging within HSCs. We describe a transcriptomics-based approach for measuring inflammaging within stem cells and demonstrate that deletion of

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Research summary

The paper addresses the role of thrombospondin-1 in regulating inflammaging within hematopoietic stem cells, which is directly related to the mechanisms of aging and longevity. By focusing on the suppression of chronic inflammation as a means to preserve hematopoietic health span, it contributes to understanding the root causes of aging rather than merely treating age-related diseases. However, while the findings are solid and contribute to the field, they do not represent a major breakthrough or transformative implications, thus warranting a moderate impact score.

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