Metabolomics reveals a link between homocysteine and lipid metabolism and leukocyte telomere length: the ENGAGE consortium

Ashley van der Spek, Linda Broer, Harmen H M Draisma, René Pool, Eva Albrecht, Marian Beekman, Massimo Mangino, Mait Raag, Dale R Nyholt, Harish K Dharuri, Veryan Codd, Najaf Amin, Eco J C de Geus, Joris Deelen, Ayse Demirkan, Idil Yet, Krista Fischer, Toomas Haller, Anjali K Henders, Aaron IsaacsSarah E Medland, Grant W Montgomery, Simon P Mooijaart, Konstantin Strauch, H Eka D Suchiman, Anika A M Vaarhorst, Diana van Heemst, Rui Wang-Sattler, John B Whitfield, Gonneke Willemsen, Margaret J Wright, Nicholas G Martin, Nilesh J Samani, Andres Metspalu, P Eline Slagboom, Tim D Spector, D.I. Boomsma, Cornelia M van Duijn, Christian Gieger

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

Telomere shortening has been associated with multiple age-related diseases such as cardiovascular disease, diabetes, and dementia. However, the biological mechanisms responsible for these associations remain largely unknown. In order to gain insight into the metabolic processes driving the association of leukocyte telomere length (LTL) with age-related diseases, we investigated the association between LTL and serum metabolite levels in 7,853 individuals from seven independent cohorts. LTL was determined by quantitative polymerase chain reaction and the levels of 131 serum metabolites were measured with mass spectrometry in biological samples from the same blood draw. With partial correlation analysis, we identified six metabolites that were significantly associated with LTL after adjustment for multiple testing: lysophosphatidylcholine acyl C17:0 (lysoPC a C17:0, p-value = 7.1 × 10-6), methionine (p-value = 9.2 × 10-5), tyrosine (p-value = 2.1 × 10-4), phosphatidylcholine diacyl C32:1 (PC aa C32:1, p-value = 2.4 × 10-4), hydroxypropionylcarnitine (C3-OH, p-value = 2.6 × 10-4), and phosphatidylcholine acyl-alkyl C38:4 (PC ae C38:4, p-value = 9.0 × 10-4). Pathway analysis showed that the three phosphatidylcholines and methionine are involved in homocysteine metabolism and we found supporting evidence for an association of lipid metabolism with LTL. In conclusion, we found longer LTL associated with higher levels of lysoPC a C17:0 and PC ae C38:4, and with lower levels of methionine, tyrosine, PC aa C32:1, and C3-OH. These metabolites have been implicated in inflammation, oxidative stress, homocysteine metabolism, and in cardiovascular disease and diabetes, two major drivers of morbidity and mortality.

Original languageEnglish
Article number11623
Pages (from-to)11623
JournalScientific Reports
Volume9
Issue number1
DOIs
Publication statusPublished - 12 Aug 2019

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    van der Spek, A., Broer, L., Draisma, H. H. M., Pool, R., Albrecht, E., Beekman, M., Mangino, M., Raag, M., Nyholt, D. R., Dharuri, H. K., Codd, V., Amin, N., de Geus, E. J. C., Deelen, J., Demirkan, A., Yet, I., Fischer, K., Haller, T., Henders, A. K., ... Gieger, C. (2019). Metabolomics reveals a link between homocysteine and lipid metabolism and leukocyte telomere length: the ENGAGE consortium. Scientific Reports, 9(1), 11623. [11623]. https://doi.org/10.1038/s41598-019-47282-6