有氧呼吸调节

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师从诺奖得主,中国博后一作兼通讯Cell论文,揭开疼痛感受器何以抵抗辣椒素致命伤害
生物世界· 2025-08-30 04:03
Core Viewpoint - The research led by Nobel laureate David Julius reveals that the TRPV1 nociceptors possess a low expression level of mitochondrial electron transport chain (ETC) components, which enhances their resilience to excitotoxicity and oxidative stress caused by harmful stimuli like capsaicin and high temperatures [3][4][11]. Group 1: Research Findings - TRPV1 nociceptors can withstand excitotoxicity induced by capsaicin due to their unique mitochondrial activity, which reduces calcium overload and reactive oxygen species (ROS) production [5][6][10]. - The study identified two pathways through which nociceptors resist excitotoxicity: one reduces calcium overload by lowering ETC activity, and the other decreases ROS production to avoid oxidative stress [6][7]. - The research highlights that the low expression of ETC components in nociceptors is a protective strategy, allowing them to survive in the presence of harmful stimuli [4][9]. Group 2: Broader Implications - This protective mechanism is not limited to capsaicin but also extends to various excitotoxic injuries, including those caused by bacterial toxins and metabolic diseases like diabetic neuropathy [10][11]. - The findings suggest that modulation of aerobic respiration could help nociceptors reduce damage from excitotoxicity, which has significant implications for understanding neuropathological consequences in conditions like diabetes and chemotherapy [13].