Study identifies SGK1 as a regulator of myeloid cell senescence in ME/CFS
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Event tier C · Tier ceiling 74 · LONGIFI_SIGNAL_V1
Quick take
Researchers have identified SGK1 as a key regulator of myeloid cell senescence in ME/CFS, showing that siRNA knockdown of the gene reduces classical senescence markers including p16, p21, and p53.
What happened
A peer-reviewed study published in PLoS One utilized bulk and single-cell transcriptomic datasets alongside in vitro validation to investigate myeloid cell senescence in myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS).
The researchers identified HMGCR and SGK1 as core hub genes, with single-cell analysis revealing that SGK1 expression is highly enriched in myeloid cell populations, such as monocytes and neutrophils, in ME/CFS patients.
In vitro functional validation showed that SGK1 is upregulated in a D-galactose-induced senescent THP-1 cell model.
Knockdown of SGK1 using siRNA significantly decreased the mRNA expression levels of key cellular senescence markers p16, p21, and p53.
Why it matters
ME/CFS exhibits immune dysregulation and chronic inflammation reminiscent of aging phenotypes, and this study provides the first exploration of myeloid cell senescence in the disease.
The finding that SGK1 knockdown downregulates p16, p21, and p53 suggests that SGK1 acts as a functional upstream regulator of the senescent phenotype in myeloid cells.
Single-gene gene set enrichment analysis (GSEA) suggests that SGK1 is associated with autophagy and lysosomal function, offering a mechanistic link between impaired cellular clearance and immune cell aging.
Market impact
The identification of SGK1 as a target regulating immune cell senescence could inform preclinical pipelines for biotechnology companies targeting cellular senescence.
While ME/CFS is the primary disease context of the research, the validation of SGK1 as an upstream modulator of classic senescent markers is relevant to the broader senology sector.
What comes next
Further experimental validation of SGK1 in primary immune cells and clinical cohorts derived from ME/CFS patients to establish its clinical viability as a therapeutic target.
Sources
- NCBIPUBMED:LONGEVITY_RESEARCH