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Int. J. Mol. Sci. 2018, 19(9), 2669; https://doi.org/10.3390/ijms19092669

Molecular Characterisation and Functions of Fis1 and PDCD6 Genes from Echinococcus granulosus

1
Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
2
College of Bioengineering, Sichuan University of Science and Engineering, Yibin 644000, China
3
Department of Chemistry, College of Life and Basic Science, Sichuan Agricultural University, Chengdu 611130, China
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 22 July 2018 / Revised: 22 August 2018 / Accepted: 5 September 2018 / Published: 8 September 2018
(This article belongs to the Section Biochemistry, Molecular and Cellular Biology)
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Abstract

Cystic echinococcosis, a parasitic zoonosis that causes significant economic losses and poses a threat to public health, is caused by larvae of the tapeworm Echinococcus granulosus. Infection causes infertile cysts in intermediate hosts that cannot produce protoscoleces (PSCs) or complete the life cycle. Herein, we cloned, expressed, and characterised mitochondrial fission protein 1 (Eg-Fis1) and programmed cell death protein 6 (Eg-PDCD6) from E. granulosus, and explored their functions related to infertile cysts. Eg-Fis1 and Eg-PDCD6 encode putative 157 and 174 residue proteins, respectively, and Western blotting indicated good reactogenicity for both. Eg-Fis1 and Eg-PDCD6 were ubiquitously distributed in all stages of E. granulosus. Furthermore, mRNAs of Eg-Fis1 and Eg-PDCD6 were upregulated following H2O2 treatment which induced apoptosis in PSCs. To investigate the regulation of apoptosis in response to oxidative stress, RNA interference (RNAi) and terminal deoxynucleotidyl transferase dUTP nick-end labelling (TUNEL) assays were performed. The apoptotic rate of the Eg-Fis1 RNAi group was significantly lower than non-interference group, but there was no such difference for Eg-PDCD6. In conclusion, Eg-Fis1 promotes apoptosis induced by oxidative stress, whereas Eg-PDCD6 does not appear to be a key regulator of apoptosis. View Full-Text
Keywords: mitochondrial fission protein 1; programmed cell death protein 6; Echinococcus granulosus; infertile cyst; apoptosis; oxidative stress mitochondrial fission protein 1; programmed cell death protein 6; Echinococcus granulosus; infertile cyst; apoptosis; oxidative stress
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Wang, N.; Zhan, J.; Guo, C.; Li, C.; Shen, N.; Gu, X.; Xie, Y.; Peng, X.; Yang, G. Molecular Characterisation and Functions of Fis1 and PDCD6 Genes from Echinococcus granulosus. Int. J. Mol. Sci. 2018, 19, 2669.

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