Regional Variation in Genetic Control of Atherosclerosis in Hyperlipidemic Mice
Atherosclerosis is a polygenic disorder that often affects multiple arteries. Carotid arteries are common sites for evaluating subclinical atherosclerosis, and aortic root is the standard site for quantifying atherosclerosis in mice. We compared genetic control of atherosclerosis between the two sit...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Oxford University Press
2020-12-01
|
| Series: | G3: Genes, Genomes, Genetics |
| Subjects: | |
| Online Access: | http://g3journal.org/lookup/doi/10.1534/g3.120.401856 |
| _version_ | 1818432530696634368 |
|---|---|
| author | Michael B. Jones Alexander An Lisa J. Shi Weibin Shi |
| author_facet | Michael B. Jones Alexander An Lisa J. Shi Weibin Shi |
| author_sort | Michael B. Jones |
| collection | DOAJ |
| description | Atherosclerosis is a polygenic disorder that often affects multiple arteries. Carotid arteries are common sites for evaluating subclinical atherosclerosis, and aortic root is the standard site for quantifying atherosclerosis in mice. We compared genetic control of atherosclerosis between the two sites in the same cohort derived from two phenotypically divergent Apoe-null (Apoe−/−) mouse strains. Female F2 mice were generated from C57BL/6 (B6) and C3H/He (C3H) Apoe−/− mice and fed 12 weeks of Western diet. Atherosclerotic lesions in carotid bifurcation and aortic root and plasma levels of fasting lipids and glucose were measured. 153 genetic markers across the genome were typed. All F2 mice developed aortic atherosclerosis, while 1/5 formed no or little carotid lesions. Genome-wide scans revealed 3 significant loci on chromosome (Chr) 1, Chr15, 6 suggestive loci for aortic atherosclerosis, 2 significant loci on Chr6, Chr12, and 6 suggestive loci for carotid atherosclerosis. Only 2 loci for aortic lesions showed colocalization with loci for carotid lesions. Carotid lesion sizes were moderately correlated with aortic lesion sizes (r = 0.303; P = 4.6E-6), but they showed slight or no association with plasma HDL, non-HDL cholesterol, triglyceride, or glucose levels among F2 mice. Bioinformatics analyses prioritized Cryge as a likely causal gene for Ath30, Cdh6 and Dnah5 as causal genes for Ath22. Our data demonstrate vascular site-specific effects of genetic factors on atherosclerosis in the same animals and highlight the need to extend studies of atherosclerosis to sites beyond aortas of mice. |
| first_indexed | 2024-12-14T16:06:40Z |
| format | Article |
| id | doaj.art-3fb29ea9a9154463bebc6c7c0b5e8633 |
| institution | Directory Open Access Journal |
| issn | 2160-1836 |
| language | English |
| last_indexed | 2024-12-14T16:06:40Z |
| publishDate | 2020-12-01 |
| publisher | Oxford University Press |
| record_format | Article |
| series | G3: Genes, Genomes, Genetics |
| spelling | doaj.art-3fb29ea9a9154463bebc6c7c0b5e86332022-12-21T22:55:05ZengOxford University PressG3: Genes, Genomes, Genetics2160-18362020-12-0110124679468910.1534/g3.120.40185634Regional Variation in Genetic Control of Atherosclerosis in Hyperlipidemic MiceMichael B. JonesAlexander AnLisa J. ShiWeibin ShiAtherosclerosis is a polygenic disorder that often affects multiple arteries. Carotid arteries are common sites for evaluating subclinical atherosclerosis, and aortic root is the standard site for quantifying atherosclerosis in mice. We compared genetic control of atherosclerosis between the two sites in the same cohort derived from two phenotypically divergent Apoe-null (Apoe−/−) mouse strains. Female F2 mice were generated from C57BL/6 (B6) and C3H/He (C3H) Apoe−/− mice and fed 12 weeks of Western diet. Atherosclerotic lesions in carotid bifurcation and aortic root and plasma levels of fasting lipids and glucose were measured. 153 genetic markers across the genome were typed. All F2 mice developed aortic atherosclerosis, while 1/5 formed no or little carotid lesions. Genome-wide scans revealed 3 significant loci on chromosome (Chr) 1, Chr15, 6 suggestive loci for aortic atherosclerosis, 2 significant loci on Chr6, Chr12, and 6 suggestive loci for carotid atherosclerosis. Only 2 loci for aortic lesions showed colocalization with loci for carotid lesions. Carotid lesion sizes were moderately correlated with aortic lesion sizes (r = 0.303; P = 4.6E-6), but they showed slight or no association with plasma HDL, non-HDL cholesterol, triglyceride, or glucose levels among F2 mice. Bioinformatics analyses prioritized Cryge as a likely causal gene for Ath30, Cdh6 and Dnah5 as causal genes for Ath22. Our data demonstrate vascular site-specific effects of genetic factors on atherosclerosis in the same animals and highlight the need to extend studies of atherosclerosis to sites beyond aortas of mice.http://g3journal.org/lookup/doi/10.1534/g3.120.401856atherosclerosiscarotid arteryaortagenetic locisite specificity |
| spellingShingle | Michael B. Jones Alexander An Lisa J. Shi Weibin Shi Regional Variation in Genetic Control of Atherosclerosis in Hyperlipidemic Mice G3: Genes, Genomes, Genetics atherosclerosis carotid artery aorta genetic loci site specificity |
| title | Regional Variation in Genetic Control of Atherosclerosis in Hyperlipidemic Mice |
| title_full | Regional Variation in Genetic Control of Atherosclerosis in Hyperlipidemic Mice |
| title_fullStr | Regional Variation in Genetic Control of Atherosclerosis in Hyperlipidemic Mice |
| title_full_unstemmed | Regional Variation in Genetic Control of Atherosclerosis in Hyperlipidemic Mice |
| title_short | Regional Variation in Genetic Control of Atherosclerosis in Hyperlipidemic Mice |
| title_sort | regional variation in genetic control of atherosclerosis in hyperlipidemic mice |
| topic | atherosclerosis carotid artery aorta genetic loci site specificity |
| url | http://g3journal.org/lookup/doi/10.1534/g3.120.401856 |
| work_keys_str_mv | AT michaelbjones regionalvariationingeneticcontrolofatherosclerosisinhyperlipidemicmice AT alexanderan regionalvariationingeneticcontrolofatherosclerosisinhyperlipidemicmice AT lisajshi regionalvariationingeneticcontrolofatherosclerosisinhyperlipidemicmice AT weibinshi regionalvariationingeneticcontrolofatherosclerosisinhyperlipidemicmice |