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821596 occurrences (No.5 in the rank) during 5 years in the PubMed. [no cache] 500 found

273) This simple culture system might enable the generation of sufficient amounts of beating cardiomyocytes for use in cardiac regenerative medicine and tissue engineering.

--- ABSTRACT ---

PMID:23728860 DOI:10.1002/term.1761

2015 Journal of tissue engineering and regenerative medicine

* Simple suspension culture system of human iPS cells maintaining their pluripotency for cardiac cell sheet engineering.

- In this study, a simple three-dimensional (3D) suspension culture method for the expansion and cardiac differentiation of human induced pluripotent stem cells (hiPSCs) is reported. The culture methods were easily adapted from two-dimensional (2D) to 3D culture without any additional manipulations. When hiPSCs were directly applied to 3D culture from 2D in a single-cell suspension, only a few aggregated cells were observed. However, after 3 days, culture of the small hiPSC aggregates in a spinner flask at the optimal agitation rate created aggregates which were capable of cell passages from the single-cell suspension. Cell numbers increased to approximately 10-fold after 12 days of culture. The undifferentiated state of expanded hiPSCs was confirmed by flow cytometry, immunocytochemistry and quantitative RT-PCR, and the hiPSCs differentiated into three germ layers. When the hiPSCs were subsequently cultured in a flask using cardiac differentiation medium, expression of cardiac cell-specific genes and beating cardiomyocytes were observed. Furthermore, the culture of hiPSCs on Matrigel-coated dishes with serum-free medium containing activin A, BMP4 and FGF-2 enabled it to generate robust spontaneous beating cardiomyocytes and these cells expressed several cardiac cell-related genes, including HCN4, MLC-2a and MLC-2v. This suggests that the expanded hiPSCs might maintain the potential to differentiate into several types of cardiomyocytes, including pacemakers. Moreover, when cardiac cell sheets were fabricated using differentiated cardiomyocytes, they beat spontaneously and synchronously, indicating electrically communicative tissue. This simple culture system might enable the generation of sufficient amounts of beating cardiomyocytes for use in cardiac regenerative medicine and tissue engineering.

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--- WordNet output for use --- =>利用, 使う, 利用する, (体, 能力など)を働かす, 使用, 利用法 Overview of noun use The noun use has 7 senses (first 6 from tagged texts) 1. (90) use, usage, utilization, utilisation, employment, exercise -- (the act of using; "he warned against the use of narcotic drugs"; "skilled in the utilization of computers") 2. (18) function, purpose, role, use -- (what something is used for; "the function of an auger is to bore holes"; "ballet is beautiful but what use is it?") 3. (7) use -- (a particular service; "he put his knowledge to good use"; "patrons have their uses") 4. (1) consumption, economic consumption, usance, use, use of goods and services -- ((economics) the utilization of economic goods to satisfy needs or in manufacturing; "the consumption of energy has increased steadily") 5. (1) habit, use -- ((psychology) an automatic pattern of behavior in reaction to a specific situation; may be inherited or acquired through frequent repetition; "owls have nocturnal habits"; "she had a habit twirling the ends of her hair"; "long use had hardened him to it") 6. (1) manipulation, use -- (exerting shrewd or devious influence especially for one's own advantage; "his manipulation of his friends was scandalous") 7. use, enjoyment -- ((law) the exercise of the legal right to enjoy the benefits of owning property; "we were given the use of his boat") Overview of verb use The verb use has 6 senses (first 3 from tagged texts) 1. (603) use, utilize, utilise, apply, employ -- (put into service; make work or employ for a particular purpose or for its inherent or natural purpose; "use your head!"; "we only use Spanish at home"; "I can't use this tool"; "Apply a magnetic field here"; "This thinking was applied to many projects"; "How do you utilize this tool?"; "I apply this rule to get good results"; "use the plastic bags to store the food"; "He doesn't know how to use a computer") 2. (12) use, habituate -- (take or consume (regularly or habitually); "She uses drugs rarely") 3. (8) use, expend -- (use up, consume fully; "The legislature expended its time on school questions") 4. use -- (seek or achieve an end by using to one's advantage; "She uses her influential friends to get jobs"; "The president's wife used her good connections") 5. practice, apply, use -- (avail oneself to; "apply a principle"; "practice a religion"; "use care when going down the stairs"; "use your common sense"; "practice non-violent resistance") 6. use -- (habitually do something (use only in the past tense); "She used to call her mother every week but now she calls only occasionally"; "I used to get sick when I ate in that dining hall"; "They used to vacation in the Bahamas") --- WordNet end ---