Marine Drugs (Oct 2020)

Viridicatol Isolated from Deep-Sea <i>Penicillium</i> <i>Griseofulvum</i> Alleviates Anaphylaxis and Repairs the Intestinal Barrier in Mice by Suppressing Mast Cell Activation

  • Zhendan Shu,
  • Qingmei Liu,
  • Cuiping Xing,
  • Yafen Zhang,
  • Yu Zhou,
  • Jun Zhang,
  • Hong Liu,
  • Minjie Cao,
  • Xianwen Yang,
  • Guangming Liu

DOI
https://doi.org/10.3390/md18100517
Journal volume & issue
Vol. 18, no. 10
p. 517

Abstract

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Viridicatol is a quinoline alkaloid isolated from the deep-sea-derived fungus Penicillium griseofulvum. The structure of viridicatol was unambiguously established by X-ray diffraction analysis. In this study, a mouse model of ovalbumin-induced food allergy and the rat basophil leukemia (RBL)-2H3 cell model were established to explore the anti-allergic properties of viridicatol. On the basis of the mouse model, we found viridicatol to alleviate the allergy symptoms; decrease the levels of specific immunoglobulin E, mast cell protease-1, histamine, and tumor necrosis factor-α; and promote the production of interleukin-10 in the serum. The treatment of viridicatol also downregulated the population of B cells and mast cells (MCs), as well as upregulated the population of regulatory T cells in the spleen. Moreover, viridicatol alleviated intestinal villi injury and inhibited the degranulation of intestinal MCs to promote intestinal barrier repair in mice. Furthermore, the accumulation of Ca2+ in RBL-2H3 cells was significantly suppressed by viridicatol, which could block the activation of MCs. Taken together, these data indicated that deep-sea viridicatol may represent a novel therapeutic for allergic diseases.

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