Epigenome-wide exploratory study of monozygotic twins suggests differentially methylated regions to associate with hand grip strength

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Abstract

Hand grip strength is a measure of muscular strength and is used to study age-related loss of physical capacity. In order to explore the biological mechanisms that influence hand grip strength variation, an epigenome-wide association study (EWAS) of hand grip strength in 672 middle-aged and elderly monozygotic twins (age 55-90 years) was performed, using both individual and twin pair level analyses, the latter controlling the influence of genetic variation. Moreover, as measurements of hand grip strength performed over 8 years were available in the elderly twins (age 73-90 at intake), a longitudinal EWAS was conducted for this subsample. No genome-wide significant CpG sites or pathways were found, however two of the suggestive top CpG sites were mapped to the COL6A1 and CACNA1B genes, known to be related to muscular dysfunction. By investigating genomic regions using the comb-p algorithm, several differentially methylated regions in regulatory domains were identified as significantly associated to hand grip strength, and pathway analyses of these regions revealed significant pathways related to the immune system, autoimmune disorders, including diabetes type 1 and viral myocarditis, as well as negative regulation of cell differentiation. The genes contributing to the immunological pathways were HLA-B, HLA-C, HLA-DMA, HLA-DPB1, MYH10, ERAP1 and IRF8, while the genes implicated in the negative regulation of cell differentiation were IRF8, CEBPD, ID2 and BRCA1. In conclusion, this exploratory study suggests hand grip strength to associate with differentially methylated regions enriched in immunological and cell differentiation pathways, and hence merits further investigations.

Original languageEnglish
JournalBiogerontology
Volume20
Issue number5
Pages (from-to)627-647
ISSN1389-5729
DOIs
Publication statusPublished - Oct 2019

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Monozygotic Twins
Cell Differentiation
HLA-C Antigens
Comb and Wattles
Nucleic Acid Regulatory Sequences
Myocarditis
Immune System

Keywords

  • Comb-p
  • Epigenome-wide association study
  • Hand grip strength
  • Longitudinal data
  • Pathway analyses
  • Twin data

Cite this

@article{44e4e9f9b486485cbb20b76c400f84a9,
title = "Epigenome-wide exploratory study of monozygotic twins suggests differentially methylated regions to associate with hand grip strength",
abstract = "Hand grip strength is a measure of muscular strength and is used to study age-related loss of physical capacity. In order to explore the biological mechanisms that influence hand grip strength variation, an epigenome-wide association study (EWAS) of hand grip strength in 672 middle-aged and elderly monozygotic twins (age 55-90 years) was performed, using both individual and twin pair level analyses, the latter controlling the influence of genetic variation. Moreover, as measurements of hand grip strength performed over 8 years were available in the elderly twins (age 73-90 at intake), a longitudinal EWAS was conducted for this subsample. No genome-wide significant CpG sites or pathways were found, however two of the suggestive top CpG sites were mapped to the COL6A1 and CACNA1B genes, known to be related to muscular dysfunction. By investigating genomic regions using the comb-p algorithm, several differentially methylated regions in regulatory domains were identified as significantly associated to hand grip strength, and pathway analyses of these regions revealed significant pathways related to the immune system, autoimmune disorders, including diabetes type 1 and viral myocarditis, as well as negative regulation of cell differentiation. The genes contributing to the immunological pathways were HLA-B, HLA-C, HLA-DMA, HLA-DPB1, MYH10, ERAP1 and IRF8, while the genes implicated in the negative regulation of cell differentiation were IRF8, CEBPD, ID2 and BRCA1. In conclusion, this exploratory study suggests hand grip strength to associate with differentially methylated regions enriched in immunological and cell differentiation pathways, and hence merits further investigations.",
keywords = "Comb-p, Epigenome-wide association study, Hand grip strength, Longitudinal data, Pathway analyses, Twin data, Comb-p, Epigenome-wide association study, Hand grip strength, Longitudinal data, Pathway analyses, Twin data",
author = "Mette Soerensen and Weilong Li and Birgit Debrabant and Marianne Nygaard and Jonas Mengel-From and Morten Frost and Kaare Christensen and Lene Christiansen and Qihua Tan",
year = "2019",
month = "10",
doi = "10.1007/s10522-019-09818-1",
language = "English",
volume = "20",
pages = "627--647",
journal = "Biogerontology",
issn = "1389-5729",
publisher = "Springer",
number = "5",

}

TY - JOUR

T1 - Epigenome-wide exploratory study of monozygotic twins suggests differentially methylated regions to associate with hand grip strength

AU - Soerensen, Mette

AU - Li, Weilong

AU - Debrabant, Birgit

AU - Nygaard, Marianne

AU - Mengel-From, Jonas

AU - Frost, Morten

AU - Christensen, Kaare

AU - Christiansen, Lene

AU - Tan, Qihua

PY - 2019/10

Y1 - 2019/10

N2 - Hand grip strength is a measure of muscular strength and is used to study age-related loss of physical capacity. In order to explore the biological mechanisms that influence hand grip strength variation, an epigenome-wide association study (EWAS) of hand grip strength in 672 middle-aged and elderly monozygotic twins (age 55-90 years) was performed, using both individual and twin pair level analyses, the latter controlling the influence of genetic variation. Moreover, as measurements of hand grip strength performed over 8 years were available in the elderly twins (age 73-90 at intake), a longitudinal EWAS was conducted for this subsample. No genome-wide significant CpG sites or pathways were found, however two of the suggestive top CpG sites were mapped to the COL6A1 and CACNA1B genes, known to be related to muscular dysfunction. By investigating genomic regions using the comb-p algorithm, several differentially methylated regions in regulatory domains were identified as significantly associated to hand grip strength, and pathway analyses of these regions revealed significant pathways related to the immune system, autoimmune disorders, including diabetes type 1 and viral myocarditis, as well as negative regulation of cell differentiation. The genes contributing to the immunological pathways were HLA-B, HLA-C, HLA-DMA, HLA-DPB1, MYH10, ERAP1 and IRF8, while the genes implicated in the negative regulation of cell differentiation were IRF8, CEBPD, ID2 and BRCA1. In conclusion, this exploratory study suggests hand grip strength to associate with differentially methylated regions enriched in immunological and cell differentiation pathways, and hence merits further investigations.

AB - Hand grip strength is a measure of muscular strength and is used to study age-related loss of physical capacity. In order to explore the biological mechanisms that influence hand grip strength variation, an epigenome-wide association study (EWAS) of hand grip strength in 672 middle-aged and elderly monozygotic twins (age 55-90 years) was performed, using both individual and twin pair level analyses, the latter controlling the influence of genetic variation. Moreover, as measurements of hand grip strength performed over 8 years were available in the elderly twins (age 73-90 at intake), a longitudinal EWAS was conducted for this subsample. No genome-wide significant CpG sites or pathways were found, however two of the suggestive top CpG sites were mapped to the COL6A1 and CACNA1B genes, known to be related to muscular dysfunction. By investigating genomic regions using the comb-p algorithm, several differentially methylated regions in regulatory domains were identified as significantly associated to hand grip strength, and pathway analyses of these regions revealed significant pathways related to the immune system, autoimmune disorders, including diabetes type 1 and viral myocarditis, as well as negative regulation of cell differentiation. The genes contributing to the immunological pathways were HLA-B, HLA-C, HLA-DMA, HLA-DPB1, MYH10, ERAP1 and IRF8, while the genes implicated in the negative regulation of cell differentiation were IRF8, CEBPD, ID2 and BRCA1. In conclusion, this exploratory study suggests hand grip strength to associate with differentially methylated regions enriched in immunological and cell differentiation pathways, and hence merits further investigations.

KW - Comb-p

KW - Epigenome-wide association study

KW - Hand grip strength

KW - Longitudinal data

KW - Pathway analyses

KW - Twin data

KW - Comb-p

KW - Epigenome-wide association study

KW - Hand grip strength

KW - Longitudinal data

KW - Pathway analyses

KW - Twin data

U2 - 10.1007/s10522-019-09818-1

DO - 10.1007/s10522-019-09818-1

M3 - Journal article

VL - 20

SP - 627

EP - 647

JO - Biogerontology

JF - Biogerontology

SN - 1389-5729

IS - 5

ER -