Abstract
We conducted in vitro transcription activities of the three zebrafish U6 putative promoters across species in cell extracts prepared from Nile tilapia (Oreochromis niloticus) and shrimps. The transcription efficiency of these putative U6 promoters in Nile tilapia cell extracts was similar to that of zebrafish cell extracts. In addition, all three zebrafish U6 snRNA promoters were able to express the shRNA in cell extracts prepared from two shrimp species, Penaeus monodon and Litopenaeus vannamei. However, the shRNA transcription products in shrimp cell extracts showed weaker signals. These U6 promoters could promote shRNA expression, suggesting that they have the potential for use for vector-based RNAi in Nile tilapia and shrimps. A putative U6 promoter would provide a powerful tool for long-term GKD in these aquaculture-related species.
References
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Acknowledgments
This work is supported by a grant from the Thailand Research Funds (MRG 4880201). We thank Prof. Piamsak Menasveta and Assoc. Prof. Somkiat Piyatiratitivorakul (Department of Marine Science, Chulalongkorn University) and Mr. Sunai Plymee (Fisheries Farm, SUT Farm) for providing the marine shrimp larvae and Nile tilapia fry. We also thank Ms. Amolwan Sang-on (Center of Scientific and Technological Equipment) for technical assistance.
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Boonanuntanasarn, S., Panyim, S. & Yoshizaki, G. Usage of putative zebrafish U6 promoters to express shRNA in Nile tilapia and shrimp cell extracts. Transgenic Res 18, 323–325 (2009). https://doi.org/10.1007/s11248-009-9249-0
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DOI: https://doi.org/10.1007/s11248-009-9249-0