Inhibition of Period Gene Expression Causes Repression of Cell Cycle Progression and Cell Growth in the Bombyx mori Cells

Inhibition of Period Gene Expression Causes Repression of Cell Cycle Progression and Cell Growth in the Bombyx mori Cells
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抑制周期基因表达会抑制家蚕细胞的细胞周期进程和细胞生长

DOI:
10.3389/fphys.2019.00537
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发表时间:
2019-05
影响因子:
4
通讯作者:
Xu Shi Qing
Xu Shi Qing
中科院分区:
医学2区
文献类型:
--
作者:
Qiu Jian Feng;Li Xue;Cui Wen Zhao;Liu Xiao Fei;Tao Hui;Yang Kun;Dai Tai Ming;Sima Yang Hu;Xu Shi Qing

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生物钟系统紊乱可导致细胞增殖失控,但其分子机制仍不清楚。我们使用单周期基因(BmPer)表达的家蚕动物模型来研究这一机制。通过持续敲低 BmPer 表达,从家蚕卵巢细胞系 (BmN) 中分离出生长缓慢的发育细胞模型 (Per-KD)。在哺乳动物中,BmPer表达敲低(Per-KD)对细胞增殖和凋亡的影响与m/hPer1和m/hPer2相反。 BmPer 表达的敲低导致细胞周期减慢,BmN 细胞核缩小,并显着抑制核 DNA 合成和细胞增殖。它还通过溶酶体途径促进自噬,并通过半胱天冬酶途径加速细胞凋亡。
Circadian clock system disorders can lead to uncontrolled cell proliferation, but the molecular mechanism remains unknown. We used a Bombyx mori animal model of single Period gene (BmPer) expression to investigate this mechanism. A slow growing developmental cell model (Per-KD) was isolated from a B. mori ovarian cell line (BmN) by continuous knock down of BmPer expression. The effects of BmPer expression knockdown (Per-KD) on cell proliferation and apoptosis were opposite to those of m/hPer1 and m/hPer2 in mammals. The knockdown of BmPer expression led to cell cycle deceleration with shrinking of the BmN cell nucleus, and significant inhibition of nuclear DNA synthesis and cell proliferation. It also promoted autophagy via the lysosomal pathway, and accelerated apoptosis via the caspase pathway.
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