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Expression of socially sensitive genes: The multi-ethnic study of atherosclerosis
BACKGROUND: Gene expression may be an important biological mediator in associations between social factors and health. However, previous studies were limited by small sample sizes and use of differing cell types with heterogeneous expression patterns. We use a large population-based cohort with gene...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6459532/ https://www.ncbi.nlm.nih.gov/pubmed/30973896 http://dx.doi.org/10.1371/journal.pone.0214061 |
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author | Brown, Kristen M. Diez-Roux, Ana V. Smith, Jennifer A. Needham, Belinda L. Mukherjee, Bhramar Ware, Erin B. Liu, Yongmei Cole, Steven W. Seeman, Teresa E. Kardia, Sharon L. R. |
author_facet | Brown, Kristen M. Diez-Roux, Ana V. Smith, Jennifer A. Needham, Belinda L. Mukherjee, Bhramar Ware, Erin B. Liu, Yongmei Cole, Steven W. Seeman, Teresa E. Kardia, Sharon L. R. |
author_sort | Brown, Kristen M. |
collection | PubMed |
description | BACKGROUND: Gene expression may be an important biological mediator in associations between social factors and health. However, previous studies were limited by small sample sizes and use of differing cell types with heterogeneous expression patterns. We use a large population-based cohort with gene expression measured solely in monocytes to investigate associations between seven social factors and expression of genes previously found to be sensitive to social factors. METHODS: We employ three methodological approaches: 1) omnibus test for the entire gene set (Global ANCOVA), 2) assessment of each association individually (linear regression), and 3) machine learning method that performs variable selection with correlated predictors (elastic net). RESULTS: In global analyses, significant associations with the a priori defined socially sensitive gene set were detected for major or lifetime discrimination and chronic burden (p = 0.019 and p = 0.047, respectively). Marginally significant associations were detected for loneliness and adult socioeconomic status (p = 0.066, p = 0.093, respectively). No associations were significant in linear regression analyses after accounting for multiple testing. However, a small percentage of gene expressions (up to 11%) were associated with at least one social factor using elastic net. CONCLUSION: The Global ANCOVA and elastic net findings suggest that a small percentage of genes may be “socially sensitive,” (i.e. demonstrate differential expression by social factor), yet single gene approaches such as linear regression may be ill powered to capture this relationship. Future research should further investigate the biological mechanisms through which social factors act to influence gene expression and how systemic changes in gene expression affect overall health. |
format | Online Article Text |
id | pubmed-6459532 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-64595322019-05-03 Expression of socially sensitive genes: The multi-ethnic study of atherosclerosis Brown, Kristen M. Diez-Roux, Ana V. Smith, Jennifer A. Needham, Belinda L. Mukherjee, Bhramar Ware, Erin B. Liu, Yongmei Cole, Steven W. Seeman, Teresa E. Kardia, Sharon L. R. PLoS One Research Article BACKGROUND: Gene expression may be an important biological mediator in associations between social factors and health. However, previous studies were limited by small sample sizes and use of differing cell types with heterogeneous expression patterns. We use a large population-based cohort with gene expression measured solely in monocytes to investigate associations between seven social factors and expression of genes previously found to be sensitive to social factors. METHODS: We employ three methodological approaches: 1) omnibus test for the entire gene set (Global ANCOVA), 2) assessment of each association individually (linear regression), and 3) machine learning method that performs variable selection with correlated predictors (elastic net). RESULTS: In global analyses, significant associations with the a priori defined socially sensitive gene set were detected for major or lifetime discrimination and chronic burden (p = 0.019 and p = 0.047, respectively). Marginally significant associations were detected for loneliness and adult socioeconomic status (p = 0.066, p = 0.093, respectively). No associations were significant in linear regression analyses after accounting for multiple testing. However, a small percentage of gene expressions (up to 11%) were associated with at least one social factor using elastic net. CONCLUSION: The Global ANCOVA and elastic net findings suggest that a small percentage of genes may be “socially sensitive,” (i.e. demonstrate differential expression by social factor), yet single gene approaches such as linear regression may be ill powered to capture this relationship. Future research should further investigate the biological mechanisms through which social factors act to influence gene expression and how systemic changes in gene expression affect overall health. Public Library of Science 2019-04-11 /pmc/articles/PMC6459532/ /pubmed/30973896 http://dx.doi.org/10.1371/journal.pone.0214061 Text en © 2019 Brown et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Brown, Kristen M. Diez-Roux, Ana V. Smith, Jennifer A. Needham, Belinda L. Mukherjee, Bhramar Ware, Erin B. Liu, Yongmei Cole, Steven W. Seeman, Teresa E. Kardia, Sharon L. R. Expression of socially sensitive genes: The multi-ethnic study of atherosclerosis |
title | Expression of socially sensitive genes: The multi-ethnic study of atherosclerosis |
title_full | Expression of socially sensitive genes: The multi-ethnic study of atherosclerosis |
title_fullStr | Expression of socially sensitive genes: The multi-ethnic study of atherosclerosis |
title_full_unstemmed | Expression of socially sensitive genes: The multi-ethnic study of atherosclerosis |
title_short | Expression of socially sensitive genes: The multi-ethnic study of atherosclerosis |
title_sort | expression of socially sensitive genes: the multi-ethnic study of atherosclerosis |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6459532/ https://www.ncbi.nlm.nih.gov/pubmed/30973896 http://dx.doi.org/10.1371/journal.pone.0214061 |
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