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Propolis induces Ca2+ signaling in immune cells.


ABSTRACT: Propolis possesses several immunological functions. We recently generated a conditional Ca2+ biosensor yellow cameleon (YC3.60) transgenic mouse line and established a five-dimensional (5D) (x, y, z, time, and Ca2+ signaling) system for intravital imaging of lymphoid tissues, including Peyer's patches (PPs). To assess the effects of propolis on immune cells, we analyzed Ca2+ signaling in vitro and in vivo using CD11c-Cre/YC3.60flox transgenic mice, in which CD11c+ dendritic cells (DCs) specifically express YC3.60. We found that propolis induced Ca2+ signaling in DCs in the PPs. Intravital imaging of PPs also showed that an intraperitoneal injection of propolis augmented Ca2+ signaling in CD11c+ cells, suggesting that propolis possesses immune-stimulating activity. Furthermore, CD11c+ cells in PPs in mice administrated propolis indicated an increase in Ca2+ signaling. Our results indicate that propolis induces immunogenicity under physiological conditions.

SUBMITTER: Adachi T 

PROVIDER: S-EPMC6856514 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature

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Propolis induces Ca<sup>2+</sup> signaling in immune cells.

Adachi Takahiro T   Yoshikawa Soichiro S   Tezuka Hiroyuki H   Tsuji Noriko M NM   Ohteki Toshiaki T   Karasuyama Hajime H   Kumazawa Toshihiko T  

Bioscience of microbiota, food and health 20190824 4


Propolis possesses several immunological functions. We recently generated a conditional Ca<sup>2+</sup> biosensor yellow cameleon (YC3.60) transgenic mouse line and established a five-dimensional (5D) (x, y, z, time, and Ca<sup>2+</sup> signaling) system for intravital imaging of lymphoid tissues, including Peyer's patches (PPs). To assess the effects of propolis on immune cells, we analyzed Ca<sup>2+</sup> signaling <i>in vitro</i> and <i>in vivo</i> using CD11c-Cre/YC3.60<sup>flox</sup> transg  ...[more]

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