Effects of neutrophils peptide-1 transgenic Chlorella ellipsoidea on the gut microbiota of male Sprague–Dawley rats, as revealed by high-throughput 16S rRNA sequencing

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• 作者：Mingzhang Guo ; Qi Bao ; Siyuan Chen…
• 关键词：Neutrophils peptide ; 1 ; Chlorella ellipsoidea ; Gut microbiota ; Lactic acid bacteria
• 刊名：World Journal of Microbiology & Biotechnology
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：32
• 期：3
• 全文大小：930 KB
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• 作者单位：Mingzhang Guo (1)
  Qi Bao (1)
  Siyuan Chen (1)
  Xingtian Cui (1)
  Wentao Xu (1) (2)
  Xiaoyun He (1)
  Yunbo Luo (1)
  Xiaozhe Qi (1)
  Kunlun Huang (1) (2)
  
  1. Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, People’s Republic of China
  2. Beijing Laboratory for Food Quality and Safety, Beijing, People’s Republic of China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Applied Microbiology
  Biotechnology
  Biochemistry
  Environmental Biotechnology
  Microbiology
  
• 出版者：Springer Netherlands
• ISSN：1573-0972

文摘

Rabbit neutrophils peptide-1 (NP-1) is a type of defensin that possesses a broad spectrum of antimicrobial activity. Chlorella ellipsoidea is a new eukaryotic expression system for exogenously producing NP-1. The NP-1 transgenic C. ellipsoidea can be directly added into feed as antimicrobial agent without any purification procedure for the NP-1 peptide. However, the effects of C. ellipsoidea and NP-1 on the host gut microbiota should be explored before application. In this study, diets containing different concentrations (1.25, 2.5, and 5 %) of C. ellipsoidea and NP-1 transgenic C. ellipsoidea were administered to male Sprague–Dawley rats. Compared with the chow diet control group, none of the experimental groups showed any significant differences in their growth indices, and no histopathological damage was observed. The phylotypes of gut microbiota in the control group, the 5 % C. ellipsoidea diet group and the 5 % NP-1 transgenic C. ellipsoidea diet group were determined by 16S rRNA sequencing. The results showed that both 5 % experimental groups had shifted community memberships of gut microbiota. In particular, the 5 % NP-1 transgenic C. ellipsoidea diet exhibited an increased abundance of most Gram-positive bacterial taxa and a reduced abundance of most Gram-negative bacterial taxa, and it promoted the growth of some lactic acid bacterial genera. Lactic acid bacteria, especially the Bifidobacterium and Lactobacillus, have been widely reported to be benefic effects on the host. Thus NP-1 transgenic C. ellipsoidea is promising feed additive and gut regulator, as it have the potential to increase the abundance of Bifidobacterium and Lactobacillus in gut microbiota of animal. Keywords Neutrophils peptide-1 Chlorella ellipsoidea Gut microbiota Lactic acid bacteria