Journal of Tropical Oceanography ›› 2022, Vol. 41 ›› Issue (5): 105-116.doi: 10.11978/2021155CSTR: 32234.14.2021155

• Exploitation of Marine Resources • Previous Articles     Next Articles

Oyster hydrolysates alleviate 5-fluorouracil-induced intestinal mucosal injury on S180 tumor-bearing mice*

YE Ziqing1,2,4(), ZHAO Xiangdan1,2,4, CAI Bingna1,3,4, WAN Peng1,3,4, CHEN Hua1,3,4, PAN Jianyu1,3,4()   

  1. 1. CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
    2. University of Chinese Academy of Sciences, Beijing 100049, China
    3. Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
    4. Institution of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou 510301, China
  • Received:2021-11-10 Revised:2021-12-21 Online:2022-09-10 Published:2021-12-22
  • Contact: PAN Jianyu E-mail:yeziqing19@mails.ucas.ac.cn;jypan@scsio.ac.cn
  • Supported by:
    National Key Research and Development Program of China(2018YFC0311202);Marine Economy Development Special Project of Guangdong Province(GDNRC[2020]038);Marine Economy Development Special Project of Guangdong Province(GDNRC[2020]036);National Natural Science Foundation of Guangdong, China(2018A030313088);Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)(GML2019ZD0406);Key-Area Research and Development Program of Guangdong Province(2020B1111030004);Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences(ISEE2021PY05)

Abstract:

In this study, oyster meat was used as the raw material to produce trypsin hydrolysates of oyster (OYH). The amino acid composition and relative molecular weight distribution of OYH were then analyzed. The effect of OYH on reducing 5-fluorouracil (5-FU) induced intestinal mucosal injury on S180 tumor-bearing mice was preliminarily investigated. The results showed that the essential amino acids in the total amino acids of OYH accounted for 36.44 %, and content of glutamic acid was the highest. The molecular weight of OYH was mostly below 1 kDa, accounting for 92.18 %. The results showed that the tumor inhibition ratio of 5-FU group was 31.00 %. Compared with model group, the tumor inhibition ratio of mice in OYH-L+5-FU, OYH-M+5-FU and OYH-H+5-FU group were significantly increased (p < 0.001) with the percentage of 38.24 %, 46.27 % and 47.57 %, respectively. Tumor inhibition ratios of OYH-M+5-FU and OYH-H+5-FU group were greatly higher than 5-FU (p < 0.01, p < 0.001). Meanwhile, OYH can alleviate intestinal mucosal injury caused by 5-FU chemotherapy. Compared with 5-FU alone treatment, OYH-L+5-FU, OYH-M+5-FU and OYH-H+5-FU group significantly increased the villus height, crypt depth, mucosa thickness and villus surface area of small intestine (p < 0.01, p < 0.001), which indicated that OYH can improve the state of intestinal crypt and epithelial villi, maintain the integrity of the intestinal mucosal barrier during chemotherapy. In addition, compared with model group, the percentage of neutrophils was decreased but the percentage of lymphocytes was increased in OYH-L+5-FU, OYH-M+5-FU and OYH-H+5-FU group (p < 0.05, p < 0.01). And the OYH-H+5-FU group can largely increase the levels of total protein, albumin and immune globulin in serum (p < 0.05, p < 0.01, p < 0.001), which showed that OYH play a role in the immunologic function, nutritional improvement and level of immune antibody regulation in serum immunoregulation. In conclusion, trypsin hydrolysates of oyster meat have the potential for becoming an adjuvant nutritional food in the process of chemotherapy, protecting intestinal mucosa and improving body tolerance.

Key words: oyster hydrolysates, chemotherapy, anti-tumor, intestinal mucosal protection, immune regulation

CLC Number: 

  • P735.4