MLST8

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Target of rapamycin complex subunit LST8 (TORC subunit LST8) (G protein beta subunit-like) (Gable) (Protein GbetaL) (Mammalian lethal with SEC13 protein 8) (mLST8) [GBL] [LST8]

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Genetic variants near MLST8 and DHX57 affect the epigenetic age of the cerebellum.

DNA methylation (DNAm) levels lend themselves for defining an epigenetic biomarker of aging known as the 'epigenetic clock'. Our genome-wide association study (GWAS) of cerebellar epigenetic age acceleration identifies five significant (P<5.0 × 10(-8)) SNPs in two loci: 2p22.1 (inside gene DHX57) and 16p13.3 near gene MLST8 (a subunit of mTOR complex 1 and 2). We find that the SNP in 16p13.3 has a cis-acting effect on the expression levels of MLST8 (P=6.9 × 10(-18)) in most brain regions. In cerebellar samples, the SNP in 2p22.1 has a cis-effect on DHX57 (P=4.4 × 10(-5)). Gene sets found by our GWAS analysis of cerebellar age acceleration exhibit significant overlap with those of Alzheimer's disease (P=4.4 × 10(-15)), age-related macular degeneration (P=6.4 × 10(-6)), and Parkinson's disease (P=2.6 × 10(-4)). Overall, our results demonstrate the utility of a new paradigm for understanding aging and age-related diseases: it will be fruitful to use epigenetic tissue age as endophenotype in GWAS.

MeSH Terms

  • Adaptor Proteins, Signal Transducing
  • Aging
  • Cell Line
  • Cerebellum
  • Epigenesis, Genetic
  • Gene Expression Regulation
  • Genetic Variation
  • Genome-Wide Association Study
  • Humans
  • Linkage Disequilibrium
  • mTOR Associated Protein, LST8 Homolog