期刊
FOOD RESEARCH INTERNATIONAL
卷 147, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.foodres.2021.110515
关键词
Paecilomyces cicadae TJJ1213; Intracellular polysaccharide (IPS); Isolation; Purification; Structural characterization; Immunomodulatory activities
资金
- National Natural Science Foundation of China [U1903108, 31871771, 31571818]
- Natural Science Foundation of Jiangsu Province [BK20161448]
- Jiangsu Provincial Key Research and Development Program [BK2020305]
- Post-graduate Research & Practice Innovation Program of Jiangsu Province [KYCX19_0589]
- Qing Lan Project of Jiangsu Province
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
Two intracellular polysaccharide fractions (IPS1 and IPS2) were obtained from the mycelium of Paecilomyces cicadae TJJ1213, showing homogenous structures and potential immunomodulatory effects by promoting cell proliferation and enhancing phagocytosis, nitric oxide release, and cytokine production. These results indicated their capability to enhance immune responses.
Two intracellular polysaccharide fractions (IPS1 and IPS2) were obtained from the mycelium of Paecilomyces cicadae TJJ1213, and the structures were conducted. Results showed that they were homogenous with the average molecular weight of 2.40 x 10(6) Da and 6.79 x 10(5) Da. Two fractions were composed of mannose, glucose and galactose with molar ratios of 1.35: 6.93: 1.0 and 2.04: 1.0: 1.87, respectively. The backbone of IPS1 was -> 4)-alpha-D-Glcp (1 -> and -> 3,4)-alpha-D-Manp (1 -> residues with a side chain consisted of T-alpha-D-Galp. IPS2 was consisted of -> 4)-alpha-D-Glcp-(1 ->, -> 3,4)-alpha-D-Manp-(1 -> and -> 2,6)-alpha-D-Manp-(1 -> residues and the branches were also consisted of T-alpha-D-Galp. In addition, the scanning electron microscope and atomic force microscope images presented different features of IPS1 and IPS2, respectively. Furthermore, two fractions exhibited better immunomodulatory effects. They could markedly promote the proliferation of RAW264.7 cells and enhance phagocytosis, nitric oxide release and cytokines production. These results indicated that IPS1 and IPS2 had potential to enhance immune responses.
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