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東日本大震災の地盤沈下 最大30センチ以上隆起 (NHK)

東日本大震災の直後、東北や関東などの沿岸部を中心に最大で1メートル余り沈下した地盤は元に戻る動きが続き、当時と比べて最大で30センチ以上隆起していたことが、国土...

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Autophagic activity in BC3H1 cells exposed to yessotoxin.

著者 Korsnes MS , Kolstad H , Kleiveland CR , Korsnes R , Ørmen E
Toxicol In Vitro.2015 Dec 29 ; ():.
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The marine toxin yessotoxin (YTX) can induce programmed cell death through both caspase-dependent and -independent pathways in various cellular systems. It appears to stimulate different forms of cellular stress causing instability among cell death mechanisms and making them overlap and cross-talk. Autophagy is one of the key pathways that can be stimulated by multiple forms of cellular stress which may determine cell survival or death. The present work evaluates a plausible link between ribotoxic stress and autophagic activity in BC3H1 cells treated with YTX. Such treatment produces massive cytoplasmic compartments as well as double-membrane vesicles termed autophagosomes which are typically observed in cells undergoing autophagy. The observed autophagosomes contain a large amount of ribosomes associated with the endoplasmic reticulum (ER). Western blotting analysis of Atg proteins and detection of the autophagic markers LC3-II and SQSTM1/p62 by flow cytometry and immunofluorescence verified autophagic activity during YTX-treatment. The present work supports the idea that autophagic activity upon YTX exposure may represent a response to ribotoxic stress.
PMID: 26743762 [PubMed - as supplied by publisher]
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