A locus on distal chromosome 11 (ahl8) and its interaction with Cdh23 ahl underlie the early onset, age-related hearing loss of DBA/2J mice.

A locus on distal chromosome 11 (ahl8) and its interaction with Cdh23 ahl underlie the early onset, age-related hearing loss of DBA/2J mice.
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DOI:
10.1016/j.ygeno.2008.06.007
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发表时间:
2008-10
期刊:
影响因子:
4.4
通讯作者:
Zheng, Qing Yin
Zheng, Qing Yin
中科院分区:
生物学3区
文献类型:
--
作者:
Johnson, Kenneth R.;Longo-Guess, Chantal;Gagnon, Leona H.;Yu, Heping;Zheng, Qing Yin

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DBA/2 J近交系小鼠广泛用于听力研究,但对其早发性、进行性听力损失的遗传基础知之甚少。为了定位潜在的遗传因素,我们分析了重组近交系和连锁回交。对来自31个BXD重组近交系的213只小鼠的分析检测到听觉脑干反应(ABR)阈值与远端11号染色体上的一个位点(我们将其命名为ahl 8)的连锁。对来自(C57 BL/6 J × DBA/2 J)F1与DBA/2 J小鼠回交的225只N2小鼠的分析证实了这种连锁(LOD>50),并细化了ahl 8候选基因区间。对来自(B6. CAST-Cdh 23 Ahl + × DBA/2 J)F1与DBA/2 J小鼠回交的214只小鼠的分析表明Cdh 23与ahl 8具有遗传互作。我们的结论是ahl 8是一个主要的贡献者DBA/2 J的听力损失,它的影响是依赖于易感Cdh 23 ahl基因型的菌株。
The DBA/2J inbred strain of mice is used extensively in hearing research, yet little is known about the genetic basis for its early onset, progressive hearing loss. To map underlying genetic factors we analyzed recombinant inbred strains and linkage backcrosses. Analysis of 213 mice from 31 BXD recombinant inbred strains detected linkage of auditory brainstem response (ABR) thresholds with a locus on distal Chromosome 11, which we designate ahl8. Analysis of 225 N2 mice from a backcross of (C57BL/6J × DBA/2J) F1 hybrids to DBA/2J mice confirmed this linkage (LOD>50) and refined the ahl8 candidate gene interval. Analysis of 214 mice from a backcross of (B6.CAST-Cdh23Ahl+ × DBA/2J) F1 hybrids to DBA/2J mice demonstrated a genetic interaction of Cdh23 with ahl8. We conclude that ahl8 is a major contributor to the hearing loss of DBA/2J and that its effects are dependent on the predisposing Cdh23ahl genotype of this strain.
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