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STAT1 Drives the Interferon-Like Response and Aging Hallmarks in Progeria.
Rafael Cancado de Faria1, Elena V Shashkova1, Colin Flaveny2,3
1Edward A. Doisy Department of Biochemistry and Molecular Biology, Saint Louis University School of Medicine, St. Louis, MO, USA.
Aging Biology
|April 21, 2025
Summary
Hutchinson-Gilford progeria syndrome (HGPS) involves sterile inflammation driven by STAT1. Treatments like calcitriol and baricitinib, and reduced STAT1, improve HGPS models and extend lifespan.
Area of Science:
- Cellular and Molecular Biology
- Genetics and Aging Research
- Immunology and Inflammation
Background:
- Hutchinson-Gilford progeria syndrome (HGPS) is a premature aging disease caused by progerin, characterized by sterile inflammation and interferon-like responses.
- The precise mechanisms driving this inflammation and its role in HGPS-related tissue degeneration remain unclear.
Purpose of the Study:
- To investigate the role of signal transducer and activator of transcription 1 (STAT1) in HGPS-associated sterile inflammation and aging phenotypes.
- To evaluate the therapeutic potential of targeting STAT1 or its downstream pathways in HGPS models.
Main Methods:
- Utilized cellular and mouse models of HGPS expressing progerin.
- Administered calcitriol and baricitinib to assess their effects on cellular hallmarks and organismal phenotypes.
- Investigated the impact of Stat1 haploinsufficiency on HGPS mouse models.
Main Results:
- STAT1 was identified as a key driver of the interferon-like response and aging phenotypes in HGPS.
- Calcitriol and baricitinib treatment ameliorated cellular defects and extended lifespan in progeria mice.
- Stat1 haploinsufficiency recapitulated the benefits of baricitinib, reducing tissue degeneration and increasing lifespan.
Conclusions:
- STAT1 signaling is a critical mediator of sterile inflammation and pathology in HGPS.
- Targeting STAT1 offers a promising therapeutic strategy for HGPS and potentially other aging-related inflammatory diseases.
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