生物节律调节在染色体水平的反映
Sassone-Corsi and colleagues研究了在上书反应中组蛋白H3磷酸化的变化,这是在染色质重构反应中的核心事件。他们观察到了,在小鼠SCN中有光诱导的磷酸化,但在视网膜和松果体中就没有。研究者接着发现,H3的磷酸化的时程与一个极早期反应基因c-fos在SCN神经元中诱导模式是相吻合的,这提示了两者的关联性。如果对小鼠给药baclofen,一个能阻断节律移动的药物,H3的磷酸化和c-fos的表达都被抑制了,这更说明了在它们之间可能有共同的信号途径。这个结果向我们揭示了节律变化在染色体水平上调控的可能机制。
相关文章:
ORIGINAL RESEARCH PAPER
Crosio, C., Vermakian, N., Allis, C. D. & Sassone-Corsi, P. Light induces chromatin modification in cells of the mammalian circadian clock. Nature Neurosci. 3, 1241–1247 (2000)[Contents page] PubMed
FURTHER READING
Cheung, P., Allis, C. D. & Sassone-Corsi, P. Signaling to chromatin through histone modifications Cell 103, 263–271 (2000) PubMed, http://www.100md.com
相关文章:
ORIGINAL RESEARCH PAPER
Crosio, C., Vermakian, N., Allis, C. D. & Sassone-Corsi, P. Light induces chromatin modification in cells of the mammalian circadian clock. Nature Neurosci. 3, 1241–1247 (2000)[Contents page] PubMed
FURTHER READING
Cheung, P., Allis, C. D. & Sassone-Corsi, P. Signaling to chromatin through histone modifications Cell 103, 263–271 (2000) PubMed, http://www.100md.com