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Sci Rep. 2018 Jun 29;8(1):9848. doi: 10.1038/s41598-018-28064-y.

Marine microalgae bioengineered Schizochytrium sp. meal hydrolysates inhibits acute inflammation.

Author information

1
Institute of Applied Biotechnology, College of Biological Science and Technology, Fuzhou University, Fuzhou, Fujian, 350116, China.
2
Section of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, The University of Chicago, Chicago, IL, 60637, USA.
3
Department of Human Genetics, The University of Chicago, Chicago, IL, 60637, USA.
4
Central Laboratory, Fujian Medical University Union Hospital, Fuzhou, 350001, China.
5
Fujian Key Laboratory of Marine Enzyme Engineering, Fuzhou University, Fuzhou, Fujian, China.
6
Institute of Applied Biotechnology, College of Biological Science and Technology, Fuzhou University, Fuzhou, Fujian, 350116, China. haoli@fzu.edu.cn.
7
Section of Gastroenterology, Hepatology, and Nutrition, Department of Medicine, The University of Chicago, Chicago, IL, 60637, USA. haoli@fzu.edu.cn.
8
Fujian LandhowbioTech. Corp.,Ltd., Fuzhou, Fujian, 350108, China. haoli@fzu.edu.cn.

Abstract

Bioengineered marine microalgae Schizochytrium sp. is currently used to produce docosahexaenoic acid (DHA). However, following DHA extraction, the remaining protein-rich materials are not well utilized. In this study, we report that marine microalgae bioengineered Schizochytrium sp. hydrolysate (MESH), which exhibits a unique peptide profile as identified by Ultra Performance Liquid Chromatography coupled with Q-TOF mass spectrometry(UPLC/Q-TOF-MS), ameliorated bowel inflammation in mice. In a mouse model of experimentalcolitis induced by dextran sulfate sodium, compared with the control mice, the mice treated with MESH were highly resistant to colitis, as demonstrated by marked reductions in body weight loss, clinical colitis scores, colonic histological damage, and colonic inflammation. Mechanistically, MESH attenuated the induction of pro-inflammatory cytokines and increased the induction of anti-inflammatory cytokines. MESH also promoted the proliferation of colonic crypt stem cells and progenitor cells required for crypt repair. Collectively, these results reveal a previously unrecognized role of MESH as a potential anti-inflammatory treatment for colitis.

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