SNP rs6265 regulates protein phosphorylation and osteoblast differentiation and influences BMD in humans.
SNP rs6265 regulates protein phosphorylation and osteoblast differentiation and influences BMD in humans.
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DOI:
10.1002/jbmr.1997
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发表时间:
2013-12
影响因子:
6.2
通讯作者:
Deng, Hong-Wen
中科院分区:
文献类型:
--
作者:
Deng, Fei-Yan;Tan, Li-Jun;Shen, Hui;Liu, Yong-Jun;Liu, Yao-Zhong;Li, Jian;Zhu, Xue-Zhen;Chen, Xiang-Ding;Tian, Qing;Zhao, Ming;Deng, Hong-Wen
Bone Mineral Density (BMD) is major index for diagnosing osteoporosis. PhosSNPs are non-synonymous SNPs that affect protein phosphorylation. The relevance and significance of phosSNPs to BMD and osteoporosis is unknown. This study aims to identify and characterize phosSNPs significant for BMD in humans. We conducted a pilot genome-wide phosSNP association study for BMD in three independent population samples, involving ~5,000 unrelated individuals. We identified and replicated three phosSNPs associated with both spine BMD and hip BMD in Caucasians. Association with hip BMD for one of these phosSNPs, i.e., rs6265 (major/minor allele: G/A) in BDNF gene, was also suggested in Chinese. Consistently in both ethnicities, individuals carrying AA genotype have significant lower hip BMD than carriers of GA and GG genotypes. Through in vitro molecular and cellular studies, we found that compared to osteoblastic cells transfected with wild-type BDNF-Val66 (encoded with allele G at rs6265), transfection of variant BDNF-Met66 (encoded with allele A at rs6265) significantly decreased BDNF protein phosphorylation (at amino acid residue T62), expression of osteoblastic genes (OPN, BMP2, and ALP), and osteoblastic activity. The findings are consistent with and explain our prior observations in general human populations. We conclude that phosSNP rs6265, via regulating BDNF protein phosphorylation and osteoblast differentiation, influence hip BMD in humans. This study represents our first endeavor to dissect the functions of phosSNPs in bone, which might stimulate extended large-scale studies on bone or similar studies on other human complex traits and diseases.
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影响因子:
6.2
作者:
Deng, HW;Shen, H;Recker, RR
通讯作者:
Recker, RR
影响因子:
7
作者:
Ren, Jian;Jiang, Chunhui;Yao, Xuebiao
通讯作者:
Yao, Xuebiao
影响因子:
5.2
作者:
Shugart, Yin Yao;Chen, Lina;Davey-Smith, George
通讯作者:
Davey-Smith, George
影响因子:
3.2
作者:
Gunstad, J;Chofield, P;Gordon, E
通讯作者:
Gordon, E
影响因子:
4
作者:
Shen, H;Zhang, YY;Deng, HW
通讯作者:
Deng, HW