TRAF-like Proteins Regulate Cellular Survival in the Planarian Schmidtea mediterranea.

TRAF-like Proteins Regulate Cellular Survival in the Planarian Schmidtea mediterranea.
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DOI:
10.1016/j.isci.2020.101665
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发表时间:
2020-11-20
期刊:
影响因子:
5.8
通讯作者:
Oviedo NJ
Oviedo NJ
中科院分区:
综合性期刊2区
文献类型:
--
作者:
Ziman B;Barghouth PG;Maciel EI;Oviedo NJ

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Tissue homeostasis relies on the timely renewal of cells that have been damaged or have surpassed their biological age. Nonetheless, the underlying molecular mechanism coordinating tissue renewal is unknown. The planarian Schmidtea mediterranea harbors a large population of stem cells that continuously divide to support the restoration of tissues throughout the body. Here, we identify that TNF Receptor Associated Factors (TRAFs) play critical roles in cellular survival during tissue repair in S. mediterranea. Disruption with RNA-interference of TRAF signaling results in rapid morphological defects and lethality within 2 weeks. The TRAF phenotype is accompanied by an increased number of mitoses and cell death. Our results also reveal TRAF signaling is required for proper regeneration of the nervous system. Taken together, we find functional conservation of TRAF-like proteins in S. mediterranea as they act as crucial regulators of cellular survival during tissue homeostasis and regeneration. The expression of Smed-TRAF-1/2, -2A/B is enriched in the digestive system Planarian TRAF-like proteins regulate the systemic cellular turnover Loss of Smed-TRAF-1/2, -2A/B leads to impaired tissue regeneration Biological Sciences; Cell Biology; Developmental Biology
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