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279736 occurrences (No.90 in the rank) during 5 years in the PubMed. [no cache] 500 found

53) When the hiPSCs were subsequently cultured in a flask using cardiac differentiation medium, expression of cardiac cell-specific genes and beating cardiomyocytes were observed.

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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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(1)15 to	(19)4 types	(37)2 attention	(55)2 lineages
(2)9 sequence	(20)3 characteristics	(38)2 barriers	(56)2 measures
(3)7 and	(21)3 features	(39)2 computational	(57)2 miRNAs
(4)7 cell	(22)3 job	(40)2 constitutive	(58)2 molecular
(5)7 variations	(23)3 target	(41)2 criteria	(59)2 neuronal
(6)6 cognitive	(24)3 tendon	(42)2 deficits	(60)2 or
(7)6 genes	(25)3 therapy	(43)2 differences	(61)2 parameters
(8)6 surface	(26)3 type	(44)2 divergence	(62)2 phytotoxicity
(9)5 antibodies	(27)3 variation	(45)2 effect	(63)2 polymerase
(10)5 for	(28)2 null	(46)2 elements	(64)2 primers
(11)5 phobias	(29)2 ECM	(47)2 ethnocultural	(65)2 protein
(12)4 brain	(30)2 IgG	(48)2 extracellular	(66)2 proteins
(13)4 effects	(31)2 PCR	(49)2 fault	(67)2 recommendations
(14)4 growth	(32)2 age-dependent	(50)2 function	(68)2 requirements
(15)4 incidence	(33)2 analysis	(51)2 genetic	(69)2 self-efficacy
(16)4 manner	(34)2 antigen	(52)2 genomic	(70)2 targeted
(17)4 motor	(35)2 antigens	(53)2 information	(71)2 tests
(18)4 needs	(36)2 approach	(54)2 inhibitors

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--- WordNet output for specific --- =>特有の, 特効薬, 明確な, 特定の, 種の, はっきりした Overview of noun specific The noun specific has 2 senses (no senses from tagged texts) 1. particular, specific -- (a fact about some part (as opposed to general); "he always reasons from the particular to the general") 2. specific -- (a medicine that has a mitigating effect on a specific disease; "quinine is a specific for malaria") Overview of adj specific The adj specific has 4 senses (first 2 from tagged texts) 1. (39) specific -- ((sometimes followed by `to') applying to or characterized by or distinguishing something particular or special or unique; "rules with specific application"; "demands specific to the job"; "a specific and detailed account of the accident") 2. (5) specific -- (stated explicitly or in detail; "needed a specific amount") 3. specific -- (relating to or distinguishing or constituting a taxonomic species; "specific characters") 4. specific -- (being or affecting a disease produced by a particular microorganism or condition; used also of stains or dyes used in making microscope slides; "quinine is highly specific for malaria"; "a specific remedy"; "a specific stain is one having a specific affinity for particular structural elements") --- WordNet end ---