GPCR autoantibody patterns in adults with decelerated biological aging resemble pediatric profiles
In this descriptive study, autoantibodies against 14 G protein-coupled receptors were measured in 83 children and 198 adults; patterns changed across life, and adults with decelerated biological aging (negative PhenoAge difference) showed profiles similar to the pediatric cohort. [1]
Automatic summary · not editorially reviewed
The key findings
The descriptive study measured autoantibodies targeting 14 distinct GPCRs in 83 children and 198 adults, considering chronological and PhenoAge-defined biological age. [1]
Antibodies against ACE2, CXCR3 and BDKRB1 rose significantly in adults and older individuals, while antibodies against ATR1, ADRA1A, ADRB2 and ETAR were significantly higher in children than adults. [1]
Adults with a negative PhenoAge difference-age score showed GPCR antibody profiles similar to the pediatric cohort; the authors hypothesize this may reflect inflammation and call for future research. [1]
The source at a glance
- Study type / format
- Descriptive study (abstract only)
- Population / context
- 83 children and 198 adults whose GPCR autoantibody levels were measured.
- Summary based on
- Study abstract
- Original publication
- June 4, 2026
Autoantibodies to 14 GPCRs in 83 children and 198 adults
The study describes levels of natural autoantibodies that bind G protein-coupled receptors (GPCRs), the largest family of membrane proteins. It measured antibodies targeting 14 distinct GPCRs in 83 children and 198 adults and considered both chronological age and biological age as defined by the PhenoAge clock. The authors note that antibody concentrations are known to rise with chronological age and that some GPCR-binding antibodies have been linked to chronic inflammation and specific autoimmune diseases in adults, while prevalence in children was previously unknown.
Supporting source [1]
Higher ACE2, CXCR3, BDKRB1 in adults; ATR1, ADRA1A, ADRB2, ETAR in children
The authors report that anti-GPCR autoantibodies are present from childhood through adulthood, but their expression patterns change significantly over life. Antibodies targeting ACE2, CXCR3 and BDKRB1 increased significantly in adults and older individuals. In contrast, concentrations of antibodies against ATR1, ADRA1A, ADRB2 and ETAR were significantly higher in children than in adults. The authors also report a concordant presence of CXCR3 antibodies and expansion of CXCR3-positive T cells with increased chronological age.
Supporting source [1]
Decelerated-aging adults show pediatric-like antibody profiles
The authors assessed age acceleration using a positive difference-age score based on the PhenoAge clock. Distinct GPCR antibody signatures correlated with accelerated aging and differed notably from patterns in the pediatric and adult cohorts. Specifically, the antibody profile in adults with a negative difference-age score resembled that of the pediatric cohort. Because chronic systemic inflammation is a known driver of accelerated aging, the authors hypothesize that altered antibody profiles in biologically older adults may reflect this inflammatory state. They state that future research is needed to evaluate therapeutic potential, and that chronological and biological age should be considered when assessing these patterns.
Supporting source [1]
How to interpret this
This is an abstract; the full text was not reviewed. The study is described as descriptive, so the reported associations do not establish causation, and the inflammation link is explicitly a hypothesis. The abstract does not report follow-up duration or detailed methods.
Based on the study abstract; the full paper, tables and supplementary data were not reviewed.
Source & supporting passages
Paniskaki K, Stervbo U, Goretzki S, Hufnagel D, Anft M, Heidecke H, Westhoff TH, Rohn H, Felderhoff-Mueser U, Witzke O, Dohna-Schwake C, Babel N. · europepmc.org · June 4, 2026