Compilation and functional classification of telomere length-associated genes in humans and other animal species DOI Creative Commons
E. V. Ignatieva, N. S. Yudin, Denis M. Larkin

et al.

Vavilov Journal of Genetics and Breeding, Journal Year: 2023, Volume and Issue: 27(3), P. 283 - 292

Published: June 2, 2023

Telomeres are the terminal regions of chromosomes that ensure their stability while cell division. Telomere shortening initiates cellular senescence, which can lead to degeneration and atrophy tissues, so process is associated with a reduction in life expectancy predisposition number diseases. An accelerated rate telomere attrition serve as predictor health status an individual. length complex phenotypic trait determined by many factors, including genetic ones. Numerous studies (including genome-wide association studies, GWAS) indicate polygenic nature control. The objective present study was characterize basis regulation using GWAS data obtained during various human other animal populations. To do so, compilation genes experiments collected, included information on 270 genes, well 23, 22, 9 identified cattle, sparrow, nematode, respectively. Among them were two orthologous encoding shelterin protein (POT1 humans pot-2 C. elegans). Functional analysis has shown be influenced variants encoding: (1) structural components telomerase; (2) telomeric (shelterin CST complexes); (3) proteins involved telomerase biogenesis regulating its activity; (4) regulate functional activity components; (5) replication and/or capping; (6) alternative lengthening; (7) respond DNA damage responsible for repair; (8) RNA-exosome components. several research groups populations different ethnic origins such TERC TERT STN1 component. Apparently, polymorphic loci affecting functions these may most reliable susceptibility markers telomere-related systematized about development prognostic criteria length-associated diseases humans. Information processes control used marker-assisted genomic selection farm animals, aimed at increasing duration productive lifetime.Теломеры – это концевые участки хромосом, обеспечивающие их стабильность в ходе клеточного деления. Укорочение теломер инициирует процесс старения клеток, что может приводить к дегенерации и атрофии тканей. связано с сокращением продолжительности жизни предрасположенностью ряду заболеваний, поэтому данный показатель быть использован качестве предиктора состояния здоровья отдельного индивида. Длина сложный фенотипический признак, который определяется многими факторами, том числе генетическими. Многочисленные исследования (включая полногеномный анализ ассоциаций, ПГАА) свидетельствуют о полигенном характере контроля длины теломер. Цель работы охарактеризовать генетические основы регуляции на основе данных ПГАА, полученных при исследовании различных популяционных выборок человека других животных. Для этого авторами была собрана компиляция генов, ассоциированных длиной по данным которая включала сведения генах человека, а также 22 генах, выявленных у крупного рогатого скота, домового воробья нематоды соответственно. Среди них присутствовали два гена-ортолога, кодирующих белок шелтеринового комплекса Функциональный показал, длину могут влиять варианты кодирующих: 1) структурные компоненты теломеразы; 2) белковые теломерных участков хромосом (шелтериновый комплекс комплекс); 3) белки, участвующие биогенезе теломеразы регулирующие ее активность; 4) функциональную активность компонентов комплекса; 5) репликации и/или кэпировании теломер; 6) контролирующие альтернативный путь удлинения 7) реагирующие повреждения ДНК отвечающие за репарацию; 8) РНК экзосом. В работе выявлены гены идентифицированные несколькими исследовательскими группами популяциях различного этнического происхождения. Это гены, кодирующие (TERC TERT), ген STN1, кодирующий комплекса. По-видимому, полиморфные локусы, затрагивающие функции этих наиболее надежными маркерами предрасположенности заболеваниям, связанным Систематизированные нами данные функциях будут полезны разработке прогностических критериев заболеваний для которых показана связь Сведения процессах, контролирующих теломер, востребованы маркер-ориентированной геномной селекции сельскохозяйственных животных, направленной повышение хозяйственного использования.

Language: Русский

Does oxidative stress shorten telomeres in vivo? A meta-analysis DOI Creative Commons
Emma Armstrong, Jelle J. Boonekamp

Ageing Research Reviews, Journal Year: 2023, Volume and Issue: 85, P. 101854 - 101854

Published: Jan. 17, 2023

Telomere attrition is considered a hallmark of ageing. Untangling the proximate causes telomere may therefore reveal important aspects about ageing process. In landmark paper in 2002 Thomas von Zglinicki demonstrated that oxidative stress accelerates cell culture. next 20 years, became firmly embedded into modern theories and attrition. However, recent surge vivo studies reveals an inconsistent pattern questioning unequivocal role length (henceforth referred to as dynamics), living organisms. Here we report results first formal meta-analysis on association between dynamics vivo, representing 37 studies, 4969 individuals, 18,677 correlational measurements. The overall correlation markers was indistinguishable from zero (r = 0.027). This result independent type marker, dynamic, or taxonomic group. measurement method affected analysis subset TRF-based showed significant 0.09), supporting prediction more pronounced short-lived species during adult life phase, when becomes apparent. We then performed additional interventional (n 7) manipulating stress. revealed effect treatment (d=0.36). Our findings provide new support for hypothesis

Language: Английский

Citations

70

Telomere Dynamics in Post-Traumatic Stress Disorder: A Critical Synthesis DOI Creative Commons
Ravi Philip Rajkumar

Biomedicines, Journal Year: 2025, Volume and Issue: 13(2), P. 507 - 507

Published: Feb. 18, 2025

Post-traumatic stress disorder (PTSD), a mental caused by exposure to traumatic stress, affects 5-10% of the world's population. There is some evidence that PTSD associated with accelerated cellular aging, leading an increased risk medical and neurodegenerative comorbidities. Alterations in telomere length (TL) telomerase enzyme activity have been proposed as biomarkers this process. This hypothesis was seemingly confirmed preliminary research, but more recent studies yielded mixed results. The current narrative review conducted provide critical synthesis existing research on PTSD. Data from 26 clinical suggest TL highly variable may be influenced methodological, demographic, trauma-related, psychosocial factors. no for altered In contrast, animal suggests does lead shortening. Overall, it likely not, itself, reliable biomarker aging Other markers senescence, such epigenetic changes, prove specific measuring process patients

Language: Английский

Citations

1

A meta‐analysis on the heritability of vertebrate telomere length DOI
Heung Ying Janet Chik, Alexandra M. Sparks, Julia Schroeder

et al.

Journal of Evolutionary Biology, Journal Year: 2022, Volume and Issue: 35(10), P. 1283 - 1295

Published: Aug. 6, 2022

Abstract Telomere dynamics are linked with both cellular and organismal senescence, life history, individual quality health. dynamics, particularly telomere length, have therefore garnered much research interest in evolutionary biology. To examine the evolution of it is important to quantify its heritability, proportion total variation explained by additive genetic effects. Many studies quantified length but estimates varied, no general conclusion has been drawn. Additionally, unclear whether biological methodological factors influence heritability estimates. We present first meta‐analysis using 104 from 43 over 18 vertebrate species. calculated an overall mean examined how varied study, phylogeny, species‐specific ecology, environmental setting, age at sampling, laboratory methods, statistical sex repeated measurements. Overall was moderate (44.9%, 95% CI: 25.2–64.7%), there considerable heterogeneity estimates, particular among Laboratory method influenced in‐gel hybridization TRF yielding higher heritabilities than qPCR Southern blot TRF. There also effect method, twin‐based SNP‐based lower correlation‐based or pedigree‐based Our results highlight heritable basis we recommend future on a wider range taxa, use variance‐partitioning methods relatedness SNP data correlation minimize estimation bias.

Language: Английский

Citations

34

Longitudinal telomere dynamics within natural lifespans of a wild bird DOI Creative Commons
Michael Le Pepke, Thomas Kvalnes, Jonathan Wright

et al.

Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)

Published: March 15, 2023

Abstract Telomeres, the nucleotide sequences that protect ends of eukaryotic chromosomes, shorten with each cell division and telomere loss may be influenced by environmental factors. Telomere length (TL) decreases age in several species, but little is known about sources genetic variation change TL (∆TL) wild animals. In this study, we tracked changes throughout natural lifespan (from a few months to almost 9 years) free-living house sparrows ( Passer domesticus ) two different island populations. was measured nestlings subsequently up four times during their lifetime. generally decreased (senescence), also observed instances lengthening within individuals. We found some evidence for selective disappearance individuals shorter telomeres through life. Early-life positively predicted later-life TL, within-individual repeatability low (9.2%). Using pedigrees, moderate heritability ∆TL h 2 = 0.21), which higher than heritabilities early-life 0.14) measurements 0.15). Cohort effects explained considerable proportions (60%), (53%), (37%), suggests persistent impacts environment on lifelong dynamics. Individual were independent TL. Finally, there weak population differences linked ecological habitat types. Combined, our results show individual biology highly dynamic both conditions.

Language: Английский

Citations

14

Sibling similarity in telomere length in Adélie penguin chicks DOI
Coline Marciau, Sophie Bestley, David Costantini

et al.

Comparative Biochemistry and Physiology Part A Molecular & Integrative Physiology, Journal Year: 2025, Volume and Issue: unknown, P. 111818 - 111818

Published: Jan. 1, 2025

Language: Английский

Citations

0

The Executive Functioning of the Chief Executive DOI

Steven C. Hertler,

Aurelio José Figueredo, Mateo Peñaherrera‐Aguirre

et al.

Published: Jan. 1, 2025

Language: Английский

Citations

0

Arousal, Attention, and Executive Functioning DOI

Steven C. Hertler,

Aurelio José Figueredo, Mateo Peñaherrera‐Aguirre

et al.

Published: Jan. 1, 2025

Language: Английский

Citations

0

Global Decline in General Intelligence DOI

Steven C. Hertler,

Aurelio José Figueredo, Mateo Peñaherrera‐Aguirre

et al.

Published: Jan. 1, 2025

Citations

0

Toward a Consolidated Understanding of Intelligence DOI

Steven C. Hertler,

Aurelio José Figueredo, Mateo Peñaherrera‐Aguirre

et al.

Published: Jan. 1, 2025

Language: Английский

Citations

0

The Demands of Office DOI

Steven C. Hertler,

Aurelio José Figueredo, Mateo Peñaherrera‐Aguirre

et al.

Published: Jan. 1, 2025

Language: Английский

Citations

0