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The molecular aging process in cells affects the genome integrity and the <t>DNAm</t> signature. The ends of chromosomes are organized as telomeric complexes. Telomeres comprise of [TTAGGG] n tandem repeats of double-stranded <t>DNA</t> and protruding single-stranded 3’-overhangs. Due to the absence of telomerase activity in healthy somatic cells gradual telomere shortening with each cell cycle is an age-dependent process, which limits the maximum number of cell divisions, thus providing a protective anti-proliferative mechanism. Telomere length is correlated with biological aging. However, their length of origin at the beginning of ontogeny seems to be heterogeneous between sexes and ethnicities , which complicates calibration when longitudinal measurements are not available. Whereas genome-wide studies on DNAm signatures in monozygotic twins suggest a high level of persistence of early genome programming , subtle changes in numerous genetic loci are observed at the same time, which correlate with biological age. These form the basis for the concept of so-called epigenetic clocks [ – ]. Such age-related DNAm variations can take place in intergenic regions (yellow shaded) as well as in the vicinty of gene promoters (red shaded), where they can take influence on gene regulation. The frequently used ‘Horvath clock’ is, in combination with Illumina’s Infinium HumanMethylome450 BeadChips, calibrated for 353 CpG sites, which can be associated with genes, promoters, long-range regulatory elements or intergenic DNA with no known function [ , ]. The illustration exemplarily shows an age-related hypermethylated intergenic region as well as a hypomethylated gene promoter during fetal growth that cis-activates mRNA synthesis from adjacent transcription start site (TSS). Below are shown the results of senescence, whereafter the same intergenic region became hypomethlylated and the promoter became hypermethylated. Promoter hypermethylation resulted in the suppression of mRNA synthesis from the adjacent TSS
Human Dna Methylation Beadchip Arrays 27k, supplied by Illumina Inc, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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human dna methylation beadchip arrays 27k - by Bioz Stars, 2026-09
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infinium human methylation beadchip 27k methylation array  (Illumina Inc)
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The molecular aging process in cells affects the genome integrity and the <t>DNAm</t> signature. The ends of chromosomes are organized as telomeric complexes. Telomeres comprise of [TTAGGG] n tandem repeats of double-stranded <t>DNA</t> and protruding single-stranded 3’-overhangs. Due to the absence of telomerase activity in healthy somatic cells gradual telomere shortening with each cell cycle is an age-dependent process, which limits the maximum number of cell divisions, thus providing a protective anti-proliferative mechanism. Telomere length is correlated with biological aging. However, their length of origin at the beginning of ontogeny seems to be heterogeneous between sexes and ethnicities , which complicates calibration when longitudinal measurements are not available. Whereas genome-wide studies on DNAm signatures in monozygotic twins suggest a high level of persistence of early genome programming , subtle changes in numerous genetic loci are observed at the same time, which correlate with biological age. These form the basis for the concept of so-called epigenetic clocks [ – ]. Such age-related DNAm variations can take place in intergenic regions (yellow shaded) as well as in the vicinty of gene promoters (red shaded), where they can take influence on gene regulation. The frequently used ‘Horvath clock’ is, in combination with Illumina’s Infinium HumanMethylome450 BeadChips, calibrated for 353 CpG sites, which can be associated with genes, promoters, long-range regulatory elements or intergenic DNA with no known function [ , ]. The illustration exemplarily shows an age-related hypermethylated intergenic region as well as a hypomethylated gene promoter during fetal growth that cis-activates mRNA synthesis from adjacent transcription start site (TSS). Below are shown the results of senescence, whereafter the same intergenic region became hypomethlylated and the promoter became hypermethylated. Promoter hypermethylation resulted in the suppression of mRNA synthesis from the adjacent TSS
Infinium Human Methylation Beadchip 27k Methylation Array, supplied by Illumina Inc, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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infinium human methylation beadchip 27k methylation array - by Bioz Stars, 2026-09
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human methylation27 beadchip array 27k array  (Illumina Inc)
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Illumina Inc human methylation27 beadchip array 27k array
The molecular aging process in cells affects the genome integrity and the <t>DNAm</t> signature. The ends of chromosomes are organized as telomeric complexes. Telomeres comprise of [TTAGGG] n tandem repeats of double-stranded <t>DNA</t> and protruding single-stranded 3’-overhangs. Due to the absence of telomerase activity in healthy somatic cells gradual telomere shortening with each cell cycle is an age-dependent process, which limits the maximum number of cell divisions, thus providing a protective anti-proliferative mechanism. Telomere length is correlated with biological aging. However, their length of origin at the beginning of ontogeny seems to be heterogeneous between sexes and ethnicities , which complicates calibration when longitudinal measurements are not available. Whereas genome-wide studies on DNAm signatures in monozygotic twins suggest a high level of persistence of early genome programming , subtle changes in numerous genetic loci are observed at the same time, which correlate with biological age. These form the basis for the concept of so-called epigenetic clocks [ – ]. Such age-related DNAm variations can take place in intergenic regions (yellow shaded) as well as in the vicinty of gene promoters (red shaded), where they can take influence on gene regulation. The frequently used ‘Horvath clock’ is, in combination with Illumina’s Infinium HumanMethylome450 BeadChips, calibrated for 353 CpG sites, which can be associated with genes, promoters, long-range regulatory elements or intergenic DNA with no known function [ , ]. The illustration exemplarily shows an age-related hypermethylated intergenic region as well as a hypomethylated gene promoter during fetal growth that cis-activates mRNA synthesis from adjacent transcription start site (TSS). Below are shown the results of senescence, whereafter the same intergenic region became hypomethlylated and the promoter became hypermethylated. Promoter hypermethylation resulted in the suppression of mRNA synthesis from the adjacent TSS
Human Methylation27 Beadchip Array 27k Array, supplied by Illumina Inc, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
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The molecular aging process in cells affects the genome integrity and the <t>DNAm</t> signature. The ends of chromosomes are organized as telomeric complexes. Telomeres comprise of [TTAGGG] n tandem repeats of double-stranded <t>DNA</t> and protruding single-stranded 3’-overhangs. Due to the absence of telomerase activity in healthy somatic cells gradual telomere shortening with each cell cycle is an age-dependent process, which limits the maximum number of cell divisions, thus providing a protective anti-proliferative mechanism. Telomere length is correlated with biological aging. However, their length of origin at the beginning of ontogeny seems to be heterogeneous between sexes and ethnicities , which complicates calibration when longitudinal measurements are not available. Whereas genome-wide studies on DNAm signatures in monozygotic twins suggest a high level of persistence of early genome programming , subtle changes in numerous genetic loci are observed at the same time, which correlate with biological age. These form the basis for the concept of so-called epigenetic clocks [ – ]. Such age-related DNAm variations can take place in intergenic regions (yellow shaded) as well as in the vicinty of gene promoters (red shaded), where they can take influence on gene regulation. The frequently used ‘Horvath clock’ is, in combination with Illumina’s Infinium HumanMethylome450 BeadChips, calibrated for 353 CpG sites, which can be associated with genes, promoters, long-range regulatory elements or intergenic DNA with no known function [ , ]. The illustration exemplarily shows an age-related hypermethylated intergenic region as well as a hypomethylated gene promoter during fetal growth that cis-activates mRNA synthesis from adjacent transcription start site (TSS). Below are shown the results of senescence, whereafter the same intergenic region became hypomethlylated and the promoter became hypermethylated. Promoter hypermethylation resulted in the suppression of mRNA synthesis from the adjacent TSS
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The molecular aging process in cells affects the genome integrity and the <t>DNAm</t> signature. The ends of chromosomes are organized as telomeric complexes. Telomeres comprise of [TTAGGG] n tandem repeats of double-stranded <t>DNA</t> and protruding single-stranded 3’-overhangs. Due to the absence of telomerase activity in healthy somatic cells gradual telomere shortening with each cell cycle is an age-dependent process, which limits the maximum number of cell divisions, thus providing a protective anti-proliferative mechanism. Telomere length is correlated with biological aging. However, their length of origin at the beginning of ontogeny seems to be heterogeneous between sexes and ethnicities , which complicates calibration when longitudinal measurements are not available. Whereas genome-wide studies on DNAm signatures in monozygotic twins suggest a high level of persistence of early genome programming , subtle changes in numerous genetic loci are observed at the same time, which correlate with biological age. These form the basis for the concept of so-called epigenetic clocks [ – ]. Such age-related DNAm variations can take place in intergenic regions (yellow shaded) as well as in the vicinty of gene promoters (red shaded), where they can take influence on gene regulation. The frequently used ‘Horvath clock’ is, in combination with Illumina’s Infinium HumanMethylome450 BeadChips, calibrated for 353 CpG sites, which can be associated with genes, promoters, long-range regulatory elements or intergenic DNA with no known function [ , ]. The illustration exemplarily shows an age-related hypermethylated intergenic region as well as a hypomethylated gene promoter during fetal growth that cis-activates mRNA synthesis from adjacent transcription start site (TSS). Below are shown the results of senescence, whereafter the same intergenic region became hypomethlylated and the promoter became hypermethylated. Promoter hypermethylation resulted in the suppression of mRNA synthesis from the adjacent TSS
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https://www.bioz.com/product/human+beadchip+27k+array/illumina+arrays/pm31476985-50-11-14
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infinitum human methylation 27k beadchip array - by Bioz Stars, 2026-09
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human methylation 27 beadchip (27k) arrays  (Illumina Inc)
90
Illumina Inc human methylation 27 beadchip (27k) arrays
The molecular aging process in cells affects the genome integrity and the <t>DNAm</t> signature. The ends of chromosomes are organized as telomeric complexes. Telomeres comprise of [TTAGGG] n tandem repeats of double-stranded <t>DNA</t> and protruding single-stranded 3’-overhangs. Due to the absence of telomerase activity in healthy somatic cells gradual telomere shortening with each cell cycle is an age-dependent process, which limits the maximum number of cell divisions, thus providing a protective anti-proliferative mechanism. Telomere length is correlated with biological aging. However, their length of origin at the beginning of ontogeny seems to be heterogeneous between sexes and ethnicities , which complicates calibration when longitudinal measurements are not available. Whereas genome-wide studies on DNAm signatures in monozygotic twins suggest a high level of persistence of early genome programming , subtle changes in numerous genetic loci are observed at the same time, which correlate with biological age. These form the basis for the concept of so-called epigenetic clocks [ – ]. Such age-related DNAm variations can take place in intergenic regions (yellow shaded) as well as in the vicinty of gene promoters (red shaded), where they can take influence on gene regulation. The frequently used ‘Horvath clock’ is, in combination with Illumina’s Infinium HumanMethylome450 BeadChips, calibrated for 353 CpG sites, which can be associated with genes, promoters, long-range regulatory elements or intergenic DNA with no known function [ , ]. The illustration exemplarily shows an age-related hypermethylated intergenic region as well as a hypomethylated gene promoter during fetal growth that cis-activates mRNA synthesis from adjacent transcription start site (TSS). Below are shown the results of senescence, whereafter the same intergenic region became hypomethlylated and the promoter became hypermethylated. Promoter hypermethylation resulted in the suppression of mRNA synthesis from the adjacent TSS
Human Methylation 27 Beadchip (27k) Arrays, supplied by Illumina Inc, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/human+beadchip+27k+array/illumina+arrays/pmc05564570-37-31-30
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human methylation 27 beadchip (27k) arrays - by Bioz Stars, 2026-09
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The molecular aging process in cells affects the genome integrity and the DNAm signature. The ends of chromosomes are organized as telomeric complexes. Telomeres comprise of [TTAGGG] n tandem repeats of double-stranded DNA and protruding single-stranded 3’-overhangs. Due to the absence of telomerase activity in healthy somatic cells gradual telomere shortening with each cell cycle is an age-dependent process, which limits the maximum number of cell divisions, thus providing a protective anti-proliferative mechanism. Telomere length is correlated with biological aging. However, their length of origin at the beginning of ontogeny seems to be heterogeneous between sexes and ethnicities , which complicates calibration when longitudinal measurements are not available. Whereas genome-wide studies on DNAm signatures in monozygotic twins suggest a high level of persistence of early genome programming , subtle changes in numerous genetic loci are observed at the same time, which correlate with biological age. These form the basis for the concept of so-called epigenetic clocks [ – ]. Such age-related DNAm variations can take place in intergenic regions (yellow shaded) as well as in the vicinty of gene promoters (red shaded), where they can take influence on gene regulation. The frequently used ‘Horvath clock’ is, in combination with Illumina’s Infinium HumanMethylome450 BeadChips, calibrated for 353 CpG sites, which can be associated with genes, promoters, long-range regulatory elements or intergenic DNA with no known function [ , ]. The illustration exemplarily shows an age-related hypermethylated intergenic region as well as a hypomethylated gene promoter during fetal growth that cis-activates mRNA synthesis from adjacent transcription start site (TSS). Below are shown the results of senescence, whereafter the same intergenic region became hypomethlylated and the promoter became hypermethylated. Promoter hypermethylation resulted in the suppression of mRNA synthesis from the adjacent TSS

Journal: Neurogenetics

Article Title: A perspective on epigenomic aging processes in the human brain and their plasticity in patients with mental disorders – a systematic review

doi: 10.1007/s10048-024-00771-x

Figure Lengend Snippet: The molecular aging process in cells affects the genome integrity and the DNAm signature. The ends of chromosomes are organized as telomeric complexes. Telomeres comprise of [TTAGGG] n tandem repeats of double-stranded DNA and protruding single-stranded 3’-overhangs. Due to the absence of telomerase activity in healthy somatic cells gradual telomere shortening with each cell cycle is an age-dependent process, which limits the maximum number of cell divisions, thus providing a protective anti-proliferative mechanism. Telomere length is correlated with biological aging. However, their length of origin at the beginning of ontogeny seems to be heterogeneous between sexes and ethnicities , which complicates calibration when longitudinal measurements are not available. Whereas genome-wide studies on DNAm signatures in monozygotic twins suggest a high level of persistence of early genome programming , subtle changes in numerous genetic loci are observed at the same time, which correlate with biological age. These form the basis for the concept of so-called epigenetic clocks [ – ]. Such age-related DNAm variations can take place in intergenic regions (yellow shaded) as well as in the vicinty of gene promoters (red shaded), where they can take influence on gene regulation. The frequently used ‘Horvath clock’ is, in combination with Illumina’s Infinium HumanMethylome450 BeadChips, calibrated for 353 CpG sites, which can be associated with genes, promoters, long-range regulatory elements or intergenic DNA with no known function [ , ]. The illustration exemplarily shows an age-related hypermethylated intergenic region as well as a hypomethylated gene promoter during fetal growth that cis-activates mRNA synthesis from adjacent transcription start site (TSS). Below are shown the results of senescence, whereafter the same intergenic region became hypomethlylated and the promoter became hypermethylated. Promoter hypermethylation resulted in the suppression of mRNA synthesis from the adjacent TSS

Article Snippet: Eleven of the studies used Horvath’s model in combination with different versions of Illumina’s Human DNA Methylation BeadChip Arrays (27K, 450K, EPIC) to determine epigenetic ages [ , ].

Techniques: Activity Assay, Genome Wide

Summary of epigenetic age studies in various brain regions and mental disorders

Journal: Neurogenetics

Article Title: A perspective on epigenomic aging processes in the human brain and their plasticity in patients with mental disorders – a systematic review

doi: 10.1007/s10048-024-00771-x

Figure Lengend Snippet: Summary of epigenetic age studies in various brain regions and mental disorders

Article Snippet: Eleven of the studies used Horvath’s model in combination with different versions of Illumina’s Human DNA Methylation BeadChip Arrays (27K, 450K, EPIC) to determine epigenetic ages [ , ].

Techniques: Control, Expressing, DNA Methylation Assay, Gene Expression