{
  "abstract": "In mammals, heat sensation is primarily mediated by thermosensitive channels, particularly transient receptor potential (TRP) channels, in dorsal root ganglion (DRG) neurons. However, whether additional channels contribute to noxious heat detection remains unclear. Here, we investigated the role of the mechanosensitive cation channel TMEM63B in DRG neurons and unexpectedly discovered its involvement in noxious thermosensation rather than mechanosensation. TMEM63B was broadly expressed in DRG neurons, and its global knockout or DRG-specific conditional knockout markedly reduced heat sensitivity. Deletion of TMEM63B significantly attenuated heat-induced calcium responses and currents in DRG neurons and elevated the temperature threshold for action potential initiation. Recombinant TMEM63B exhibited moderate heat response in calcium imaging assays. Notably, in the presence of arachidonic acid, TMEM63B was strongly activated by heat, suggesting that its thermosensitivity is modulated by the membrane lipid environment. Together, these findings identify TMEM63B as a novel channel contributing to heat sensation and reveal a lipid-dependent modulation of its channel activity.\n\nHeat sensation is primarily mediated by thermosensitive channels in mammals, however whether additional channels contribute to noxious heat detection remains unclear. This study shows that the mechanosensitive cation channel TMEM63B contributes to heat sensation through a unique mechanism modulated by the membrane lipid environment.",
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  "affiliations": [
    "Department of Anesthesiology, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China",
    "Guangdong Institute of Intelligence Science and Technology, Zhuhai, China",
    "Ministry of Education Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Medical School, Nanjing University, Nanjing, China",
    "State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing, China",
    "Department of Neurology, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China"
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      "name": "Chang Ye"
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      "name": "Yan-Yu Zang"
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      "name": "Gui-Fang Duan"
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      "name": "Jiang Chen"
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      "name": "Dan Wu"
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    {
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      "name": "Dan Wang"
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    {
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      "name": "Changlin Li"
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    {
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      "name": "Yun Xu"
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      "name": "Tianjiao Xia"
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      "name": "Xiaoping Gu"
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      "name": "Yun Stone Shi",
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  "doi": "10.1371/journal.pbio.3004060",
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  "published": "2026-10-16",
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      "field": "biochemistry",
      "origin": "heading:Biophysics",
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      "origin": "heading:Cell Biology",
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  "title": "The mechanosensitive channel TMEM63B contributes to noxious heat sensation in the dorsal root ganglia",
  "title_text": "The mechanosensitive channel TMEM63B contributes to noxious heat sensation in the dorsal root ganglia",
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