Autophagy up-regulation by early weaning in the liver, spleen and skeletal muscle of piglets

Autophagy up-regulation by early weaning in the liver, spleen and skeletal muscle of piglets
复制标题

早期断奶对仔猪肝脏、脾脏和骨骼肌自噬的上调

DOI:
10.1017/s0007114511001000
复制
发表时间:
2011-04
影响因子:
3.6
通讯作者:
晏向华
晏向华
中科院分区:
医学3区
文献类型:
--
作者:
晏向华

文献摘要

参考文献

被引文献

相似文献

自噬是一种分解代谢过程,在几乎所有真核生物中负责细胞溶质组分的降解和细胞内稳态的保持,当营养供应有限时,自噬被上调。然而,早期断奶是否会诱导婴儿的自噬尚不完全清楚。在本研究中,我们使用仔猪作为早期断奶模型,研究不同组织中自噬活性对营养状况的反应。Western blot分析表明,与未断奶处理相比,断奶处理12和24 h后,微管相关蛋白1轻链3-II的表达水平显著升高,这是一种有希望的大自噬标记蛋白P <0.01),且p62断乳处理后,肝脏、脾脏和骨骼肌组织中SQSTM 1的表达水平显著降低(P <0.01)。透射电镜下可见自噬空泡明显增多(P <0.01)。总之,这些结果表明,早期断奶诱导的自噬可能有助于生理系统,该系统控制仔猪模型中基本细胞功能的能量和营养平衡。
Autophagy, a catabolic process responsible for the degradation of cytosolic components and the preservation of cellular homeostasis in virtually all eukaryotic organisms, is up-regulated when nutrient supplies are limited. However, whether early weaning induces autophagy in infants is not completely clear. In the present study, we used piglets as the early-weaning model to examine the autophagic activity in different tissues in response to nutrient status. Western blot analysis demonstrated that microtubule-associated protein 1 light chain 3-II, a promising marker protein for macroautophagy, was expressed at a notably higher level at 12 and 24 h weaning treatments than without weaning treatment (P < 0·01), and that the p62 (sequestome 1; SQSTM1) expression level was significantly attenuated after weaning treatments (P < 0·01) in the liver, spleen and skeletal muscle tissues. In addition, autophagic vacuoles detected by transmission electron microscopy were dramatically accumulated in these tissues (P < 0·01). Together, these results indicate that autophagy induced by early weaning may be helpful for the physiological system, which controls the balance of energy and nutrients for basic cell functions in the piglet model.
DOI: 10.1016/s0021-9258(18)74756-x
发表时间: 1936-08
影响因子: 4.8
作者:
T. Addis;L. J. Poo;W. Lew
通讯作者: T. Addis;L. J. Poo;W. Lew
DOI: 10.1096/fasebj.8.14.7958612
发表时间: 1994-11
期刊: The FASEB Journal
影响因子: --
作者:
T. Edgington
通讯作者: T. Edgington
p62/SQSTM1形成自噬降解的蛋白质聚集体,并对亨廷顿蛋白诱导的细胞死亡具有保护作用。
DOI: 10.1083/jcb.200507002
发表时间: 2005-11-21
影响因子: 7.8
作者:
Bjorkoy, Geir;Lamark, Trond;Brech, Andreas;Outzen, Heidi;Perander, Maria;Overvatn, Aud;Stenmark, Harald;Johansen, Terje
通讯作者: Johansen, Terje
DOI: 10.1016/b978-0-12-822003-0.00014-0
发表时间: 2022
期刊: Autophagy in Health and Disease
影响因子: --
作者:
Mark Li;Ling Yang
通讯作者: Mark Li;Ling Yang
DOI: 10.1038/nature03029
发表时间: 2004-12-23
期刊: NATURE
影响因子: 64.8
作者:
Kuma, A;Hatano, M;Mizushima, N
通讯作者: Mizushima, N