Membrane prestin expression correlates with the magnitude of prestin-associated charge movement.

Membrane prestin expression correlates with the magnitude of prestin-associated charge movement.
复制标题

DOI:
10.1016/j.heares.2016.05.016
复制
发表时间:
2016-09
期刊:
影响因子:
2.8
通讯作者:
Pereira, Fred A.
Pereira, Fred A.
中科院分区:
医学1区
文献类型:
--
作者:
Seymour, Michelle L.;Rajagopalan, Lavanya;Duret, Guillaume;Volk, Matthew J.;Liu, Haiying;Brownell, William E.;Pereira, Fred A.

文献摘要

参考文献

被引文献

相似文献

耳蜗外毛细胞(OHC)侧壁的普雷斯廷功能是电活动、非线性电容(NLC)产生和高灵敏度哺乳动物听力的重要基础。对OHC膜中普雷斯廷分子数量的估计各不相同,关于普雷斯廷表达与OHC中普雷斯丁相关电荷运动之间的相关性尚未达成共识。使用诱导型prestin表达细胞系,我们证明了电荷密度,但不是在峰值电容电压,直接与质膜中的普雷斯廷的量。这种相关性在涉及诱导后普雷斯廷表达随时间和诱导剂剂量反应的受控增加的研究中是明显的。相反,膜普雷斯廷水平和电荷密度逐渐下降后,普雷斯廷水平从一个稳定状态的诱导剂的去除。因此,电荷密度与膜普雷斯廷表达水平直接相关,而改变普雷斯廷的膜水平对该可诱导的普雷斯丁表达细胞系中峰值电容处的电压没有影响。
Full expression of electromotility, generation of non-linear capacitance (NLC), and high-acuity mammalian hearing require prestin function in the lateral wall of cochlear outer hair cells (OHCs). Estimates of the number of prestin molecules in the OHC membrane vary, and a consensus has not emerged about the correlation between prestin expression and prestin-associated charge movement in the OHC. Using an inducible prestin-expressing cell line, we demonstrate that the charge density, but not the voltage at peak capacitance, directly correlates with the amount of prestin in the plasma membrane. This correlation is evident in studies involving a controlled increase of prestin expression with time after induction and inducer dose-response. Conversely, membrane prestin levels and charge density gradually decline together following the reduction of prestin levels from a steady state by removal of the inducer. Thus, charge density directly correlates with the level of membrane prestin expression, whereas changing membrane levels of prestin have no effect on the voltage at peak capacitance in this inducible prestin-expressing cell line.
DOI: 10.1371/journal.pone.0066078
发表时间: 2013
期刊: PloS one
影响因子: 3.7
作者:
Bian S;Navaratnam D;Santos-Sacchi J
通讯作者: Santos-Sacchi J
DOI: 10.1007/s10162-009-0196-5
发表时间: 2010-03-01
影响因子: 2.4
作者:
Rajagopalan, Lavanya;Organ-Darling, Louise E.;Pereira, Fred A.
通讯作者: Pereira, Fred A.
DOI: 10.1016/j.neuron.2008.02.028
发表时间: 2008-05-08
期刊: NEURON
影响因子: 16.2
作者:
Dallos, Peter;Wu, Xudong;Zuo, Jian
通讯作者: Zuo, Jian
DOI: 10.1113/jphysiol.2002.036434
发表时间: 2003-03-15
影响因子: 5.5
作者:
Rybalchenko, V;Santos-Sacchi, J
通讯作者: Santos-Sacchi, J
DOI: 10.1073/pnas.071613498
发表时间: 2001-03-27
影响因子: 11.1
作者:
Ludwig, J;Oliver, D;Fakler, B
通讯作者: Fakler, B