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Two Heteropolysaccharides from Isaria Cicadae Miquel Differ in Composition and Potentially Immunomodulatory Activity
SUNLONG BIOTECH / 2024-01-09
  • Author:Xu, Z., Yan, X., Song, Z., Li, W., Zhao, W., Ma, H., Du, J., Li, S. & Zhang, D.

  • Periodical:International journal of biological macromolecules 117, 610-616 (2018)

  • Article source

Two novel heteropolysaccharides (JCH-1 and JCH-2) with molecular weights of 30.9 and 555.3?kDa were first extracted, isolated and purified from Isaria cicadae Miquel (I. Miquel). Monosaccharide analysis showed that JCH-1 and JCH-2 were composed of mannose, glucose and galactose with different monosaccharide ratio. In addition, JCH-1 had higher contents of sulfated and uronic acid compared to JCH-2. Based on MTT assay, JCH-1 and JCH-2 could markedly promote the proliferation of RAW264.7 cells and exhibit no cytotoxicity at a specific concentration range. The immunomodulatory assay exhibited that JCH-1 and JCH-2 could significantly enhance the viability of macrophage cells, and promote the release of NO, IL-6 and TNF-α. Furthermore, the immunomodulatory activity of JCH-1 was significantly better than that of JCH-2. These results proposed that I. Miquel had two polysaccharide fractions with different composition and JCH-1 is better to be developed as a functional food with the better immunomodulator activity.

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