Merkel cells are essential for light-touch responses.
Merkel cells are essential for light-touch responses.
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DOI:
10.1126/science.1172890
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发表时间:
2009-06-19
期刊:
影响因子:
--
通讯作者:
Zoghbi HY
中科院分区:
文献类型:
--
作者:
Maricich SM;Wellnitz SA;Nelson AM;Lesniak DR;Gerling GJ;Lumpkin EA;Zoghbi HY
The peripheral nervous system detects different somatosensory stimuli including pain, temperature and touch. Merkel receptors are touch receptors composed of sensory afferents and Merkel cells. The role that Merkel cells play in light touch responses has been the center of controversy for over 100 years. We used Cre-loxP technology to conditionally delete the transcription factor Atoh1 from the body skin and foot pads of mice. Merkel cells are absent from these areas in Atoh1CKO animals. Ex vivo skin/nerve preparations from Atoh1CKO animals demonstrate complete loss of the characteristic neurophysiologic responses normally mediated by Merkel receptors. Merkel cells are therefore required for the proper encoding of Merkel receptor responses, suggesting that these cells form an indispensible part of the somatosensory system.
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