Role of SFRS13A in low-density lipoprotein receptor splicing.
Role of SFRS13A in low-density lipoprotein receptor splicing.
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DOI:
10.1002/humu.21244
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发表时间:
2010-06
期刊:
影响因子:
3.9
通讯作者:
Estus, Steven
中科院分区:
文献类型:
--
作者:
Ling, I-Fang;Estus, Steven
Low density lipoprotein receptor (LDLR) is a major apolipoprotein E (APOE) receptor and thereby is critical to cholesterol homeostasis and, possibly, Alzheimer disease (AD) development. We previously identified a single nucleotide polymorphism (SNP), rs688:C>T, that modulates LDLR exon 12 splicing and is associated with cholesterol levels in pre-menopausal women and with Alzheimer disease in men. To gain additional insights into LDLR splicing regulation, we seek to identify splicing factors that modulate LDLR splicing efficiency. By using an in vitro minigene study, we first found that ectopic expression of SFRS3 (SRp20), SFRS13A (SRp38), SFRS13A-2 (SRp38-2) and RBMX (hnRNP G) robustly decreased LDLR splicing efficiency. While SFRS3 and SFRS13A specifically increased the LDLR transcript lacking exon 11, SFRS13A-2 and RBMX primarily increased the LDLR isoform lacking both exons 11 and 12. When we evaluated the relationship between the expression of these splicing factors and LDLR splicing in human brain and liver specimens, we found that overall SFRS13A expression was significantly associated with LDLR splicing efficiency in vivo. We interpret these results as suggesting that SFRS13A regulates LDLR splicing efficiency and may therefore emerge as a modulator of cholesterol homeostasis.
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影响因子:
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DOI:
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发表时间:
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期刊:
Cellular and molecular life sciences : CMLS
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DOI:
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发表时间:
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期刊:
Biochimica et biophysica acta
影响因子:
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作者:
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通讯作者:
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