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286534 occurrences (No.87 in the rank) during 5 years in the PubMed. [no cache] 500 found

421) Taken together, we successfully demonstrated antigen-responsive regulation of cell motility and migration via the signalobodies.

--- ABSTRACT ---

PMID:24375974 DOI:10.1002/btpr.1861

2015 Biotechnology progress

* Antigen-responsive regulation of Cell motility and migration via the signalobodies based on c-Fms and c-Mpl.

- Since cell migration plays critical roles in development and homeostasis of the body, artificial control of cell migration would be promising for the treatment of various diseases related to migration. To this end, we previously developed single-chain Fv (scFv)/receptor chimeras, named signalobodies, which can control cell fates via a specific antigen that is different from natural cytokines. Although a conventional chemotaxis chamber assay revealed that several signalobodies based on receptor tyrosine kinases transduced antigen-dependent migration signals, we have never performed direct observation of the cells to obtain more information on overall properties of cell motility and migration. In this study, we utilized murine pro-B Ba/F3 cells expressing either a scFv-Fms or scFv-Mpl signalobody, and compared their migratory characteristics. We employed a lipid-polyethylene glycol conjugate to softly immobilize the suspension cells on a slide, which facilitated direct observation of chemokinetic activity of the cells. Consequently, both cells markedly exhibited chemokinesis in response to a specific antigen. In addition, the cells were subjected to a stable antigen-concentration gradient to observe horizontal directional cell migration in real time. The results showed that the cells expressing scFv-Fms underwent directional migration toward a positive antigen-concentration gradient. Taken together, we successfully demonstrated antigen-responsive regulation of cell motility and migration via the signalobodies.

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(1)158 that	(10)5 good	(19)3 excellent	(28)2 efficacy
(2)48 the	(11)5 increased	(20)3 more	(29)2 greater
(3)40 a	(12)5 significantly	(21)3 no	(30)2 how
(4)23 by	(13)4 as	(22)3 that,	(31)2 successful
(5)21 to	(14)4 better	(23)2 acceptable	(32)2 through
(6)13 in	(15)4 improved	(24)2 and	(33)2 using
(7)12 null	(16)4 its	(25)2 both
(8)11 an	(17)4 similar	(26)2 decreased
(9)8 for	(18)3 between	(27)2 differential

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--- WordNet output for demonstrated --- Overview of verb demonstrate The verb demonstrate has 4 senses (first 4 from tagged texts) 1. (24) show, demo, exhibit, present, demonstrate -- (give an exhibition of to an interested audience; "She shows her dogs frequently"; "We will demo the new software in Washington") 2. (22) prove, demonstrate, establish, show, shew -- (establish the validity of something, as by an example, explanation or experiment; "The experiment demonstrated the instability of the compound"; "The mathematician showed the validity of the conjecture") 3. (2) attest, certify, manifest, demonstrate, evidence -- (provide evidence for; stand as proof of; show by one's behavior, attitude, or external attributes; "His high fever attested to his illness"; "The buildings in Rome manifest a high level of architectural sophistication"; "This decision demonstrates his sense of fairness") 4. (1) demonstrate, march -- (march in protest; take part in a demonstration; "Thousands demonstrated against globalization during the meeting of the most powerful economic nations in Seattle") Overview of adj demonstrated The adj demonstrated has 1 sense (first 1 from tagged texts) 1. (1) demonstrated -- (having been demonstrated or verified beyond doubt) --- WordNet end ---