PNAS:沈伟教授利用光遗传学等技术解析体温调节

2017-02-22 佚名 生物通

来自上海科技大学的研究人员发现了一个控制体温的下丘脑神经环路,这为进一步揭示温度调节机制提供了基础,也为深入理解中暑、发烧等生理病理反应提供了新的线索,为这些常见疾病的防治提供了新的药物靶点和治疗策略。这一研究成果公布在《美国国家科学院院刊》(PNAS)杂志上,文章的通讯作者是上海科技大学沈伟博士,他早年毕业于清华大学,主要从事神经生物学、行为生物学的研究。体温的稳定对于人类正常生理活动的开展十分


来自上海科技大学的研究人员发现了一个控制体温的下丘脑神经环路,这为进一步揭示温度调节机制提供了基础,也为深入理解中暑、发烧等生理病理反应提供了新的线索,为这些常见疾病的防治提供了新的药物靶点和治疗策略。

这一研究成果公布在《美国国家科学院院刊》(PNAS)杂志上,文章的通讯作者是上海科技大学沈伟博士,他早年毕业于清华大学,主要从事神经生物学、行为生物学的研究。

体温的稳定对于人类正常生理活动的开展十分关键。体温调节紊乱(如发热、中暑等),则会打乱很多重要生理活动,严重时甚至危及生命。体温调节主要受中枢神经系统控制。尽管人们在 20 世纪就已知体温的控制中枢位于下丘脑,但由于下丘脑位于大脑深部,用传统方法很难完全解析其对体温的调节机制。

为了阐明下丘脑参与体温调节的神经元与神经环路,沈伟课题组利用光遗传学、生理钙信号记录等手段,从神经环路水平对小鼠下丘脑的作用进行了系列实验,研究发现:下丘脑视前区的亚区(ventral part of lateral preoptic nucleus,vLPO)神经元调控热驱动的降温行为,而下丘脑的另一个亚区——下丘脑背中侧部的背侧(dorsomedial hypothalamic nucleus,dorsal part,DMD)的神经元负责冷刺激引起的产热机制,而且证实 DMD 神经元的活动受到 vLPO 神经元的抑制。

此外,该研究还发现一个新的热敏感神经元标记物——脑源性神经营养因子(brain-derived neurotrophic factor, BDNF),BDNF 神经元代表了一类新的热调节神经元,它的发现为进一步揭示温度调节机制提供了基础。上述结果为人们深入理解中暑、发烧等生理病理反应提供了新的线索,为这些常见疾病的防治提供了新的药物靶点和治疗策略。

原始出处:
Zheng-Dong Zhao,Wen Z.Yang,Cuicui Gao,et al.A hypothalamic circuit that controls body temperature.PNAS,Jan 4.

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    2017-09-01 drwjr
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    2017-12-02 hongbochen
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    2017-02-28 wxl882001

    学习一下

    0