Gene-by-diet interactions affect serum 1,25-dihydroxyvitamin D levels in male BXD recombinant inbred mice

James C. Fleet, Rebecca A. Replogle, Perla Reyes-Fernandez, Libo Wang, Min Zhang, Erica L. Clinkenbeard, Kenneth White

Research output: Contribution to journalArticle

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Abstract

1,25-Dihydroxyvitamin D (1,25[OH]2D) regulates calcium (Ca), phosphate, and bone metabolism. Serum 1,25(OH)2D levels are reduced by low vitamin D status and high fibroblast growth factor 23 (FGF23) levels and increased by low Ca intake and high PTH levels. Natural genetic variation controls serum 25-hydroxyvitamin D (25[OH]D) levels, but it is unclear how it controls serum 1,25(OH)2D or the response of serum 1,25(OH)2D levels to dietary Ca restriction (RCR). Male mice from 11 inbred lines and from 51 BXD recombinant inbred lines were fed diets with either 0.5% (basal) or 0.25% Ca from 4 to 12 weeks of age (n = 8 per line per diet). Significant variation among the lines was found in basal serum 1,25(OH)2D and in the RCR as well as basal serum 25(OH)D and FGF23 levels. 1,25(OH)2D was not correlated to 25(OH)D but was negatively correlated to FGF23 (r = -0.5). Narrow sense heritability of 1,25(OH)2D was 0.67 on the 0.5% Ca diet, 0.66 on the 0.25% Ca diet, and 0.59 for the RCR, indicating a strong genetic control of serum 1,25(OH)2D. Genetic mapping revealed many loci controlling 1,25(OH)2D (seven loci) and the RCR (three loci) as well as 25(OH)D (four loci) and FGF23 (two loci); a locus on chromosome 18 controlled both 1,25(OH)2D and FGF23. Candidate genes underlying loci include the following: Ets1 (1,25[OH]2D), Elac1 (FGF23 and 1,25[OH]2D), Tbc1d15 (RCR), Plekha8 and Lyplal1 (25[OH]D), and Trim35 (FGF23). This report is the first to reveal that serum 1,25(OH)2D levels are controlled by multiple genetic factors and that some of these genetic loci interact with the dietary environment.

Original languageEnglish (US)
Pages (from-to)470-481
Number of pages12
JournalEndocrinology
Volume157
Issue number2
DOIs
StatePublished - Feb 1 2016

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Diet
Serum
Genes
Calcium
Chromosomes, Human, Pair 18
Fibroblast Growth Factor 1
Dietary Calcium
Genetic Loci
1,25-dihydroxyvitamin D
fibroblast growth factor 23
Vitamin D
Bone and Bones

ASJC Scopus subject areas

  • Endocrinology

Cite this

Fleet, J. C., Replogle, R. A., Reyes-Fernandez, P., Wang, L., Zhang, M., Clinkenbeard, E. L., & White, K. (2016). Gene-by-diet interactions affect serum 1,25-dihydroxyvitamin D levels in male BXD recombinant inbred mice. Endocrinology, 157(2), 470-481. https://doi.org/10.1210/en.2015-1786

Gene-by-diet interactions affect serum 1,25-dihydroxyvitamin D levels in male BXD recombinant inbred mice. / Fleet, James C.; Replogle, Rebecca A.; Reyes-Fernandez, Perla; Wang, Libo; Zhang, Min; Clinkenbeard, Erica L.; White, Kenneth.

In: Endocrinology, Vol. 157, No. 2, 01.02.2016, p. 470-481.

Research output: Contribution to journalArticle

Fleet, JC, Replogle, RA, Reyes-Fernandez, P, Wang, L, Zhang, M, Clinkenbeard, EL & White, K 2016, 'Gene-by-diet interactions affect serum 1,25-dihydroxyvitamin D levels in male BXD recombinant inbred mice', Endocrinology, vol. 157, no. 2, pp. 470-481. https://doi.org/10.1210/en.2015-1786
Fleet JC, Replogle RA, Reyes-Fernandez P, Wang L, Zhang M, Clinkenbeard EL et al. Gene-by-diet interactions affect serum 1,25-dihydroxyvitamin D levels in male BXD recombinant inbred mice. Endocrinology. 2016 Feb 1;157(2):470-481. https://doi.org/10.1210/en.2015-1786
Fleet, James C. ; Replogle, Rebecca A. ; Reyes-Fernandez, Perla ; Wang, Libo ; Zhang, Min ; Clinkenbeard, Erica L. ; White, Kenneth. / Gene-by-diet interactions affect serum 1,25-dihydroxyvitamin D levels in male BXD recombinant inbred mice. In: Endocrinology. 2016 ; Vol. 157, No. 2. pp. 470-481.
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abstract = "1,25-Dihydroxyvitamin D (1,25[OH]2D) regulates calcium (Ca), phosphate, and bone metabolism. Serum 1,25(OH)2D levels are reduced by low vitamin D status and high fibroblast growth factor 23 (FGF23) levels and increased by low Ca intake and high PTH levels. Natural genetic variation controls serum 25-hydroxyvitamin D (25[OH]D) levels, but it is unclear how it controls serum 1,25(OH)2D or the response of serum 1,25(OH)2D levels to dietary Ca restriction (RCR). Male mice from 11 inbred lines and from 51 BXD recombinant inbred lines were fed diets with either 0.5{\%} (basal) or 0.25{\%} Ca from 4 to 12 weeks of age (n = 8 per line per diet). Significant variation among the lines was found in basal serum 1,25(OH)2D and in the RCR as well as basal serum 25(OH)D and FGF23 levels. 1,25(OH)2D was not correlated to 25(OH)D but was negatively correlated to FGF23 (r = -0.5). Narrow sense heritability of 1,25(OH)2D was 0.67 on the 0.5{\%} Ca diet, 0.66 on the 0.25{\%} Ca diet, and 0.59 for the RCR, indicating a strong genetic control of serum 1,25(OH)2D. Genetic mapping revealed many loci controlling 1,25(OH)2D (seven loci) and the RCR (three loci) as well as 25(OH)D (four loci) and FGF23 (two loci); a locus on chromosome 18 controlled both 1,25(OH)2D and FGF23. Candidate genes underlying loci include the following: Ets1 (1,25[OH]2D), Elac1 (FGF23 and 1,25[OH]2D), Tbc1d15 (RCR), Plekha8 and Lyplal1 (25[OH]D), and Trim35 (FGF23). This report is the first to reveal that serum 1,25(OH)2D levels are controlled by multiple genetic factors and that some of these genetic loci interact with the dietary environment.",
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