オカモト　カズコ   Kazuko Okamoto   岡本　和子    所属   川崎医科大学  医学部 一般教養　自然科学    職種   助教
論文種別	原著
言語種別	英語
査読の有無	査読あり
表題	Single cell analysis reveals a biophysical aspect of collective cell-state transition in embryonic stem cell differentiation.
掲載誌名	正式名：Scientific reports 略　 称：Sci Rep ISSNコード：20452322/20452322
掲載区分	国外
巻・号・頁	8(1),pp.11965
著者・共著者	Kazuko Okamoto, Arno Germond, Hideaki Fujita, Chikara Furusawa, Yasushi Okada, Tomonobu M Watanabe
担当区分	筆頭著者
発行年月	2018/08
概要	In the stem cell research field, the molecular regulatory network used to define cellular states has been extensively studied, however, the general driving force guiding the collective state dynamics remains to be identified from biophysical aspects. Here we monitored the time-development of the cell-state transition at the single-cell and colony levels, simultaneously, during the early differentiation process in mouse embryonic stem cells. Our quantitative analyses revealed that cellular heterogeneity was a result of spontaneous fluctuation of cellular state and cell-cell cooperativity. We considered that the cell state is like a ball fluctuating on a potential landscape, and found that the cooperativity affects the fluctuation. Importantly, the cooperativity temporarily decreased and increased in the intermediate state of cell differentiation, leading to cell-state transition in unison. This process can be explained using the mathematical equation of flashing-ratchet behaviour, which suggests that a general mechanism is driving the collective decision-making of stem cells.
DOI	10.1038/s41598-018-30461-2
PMID	30097661