* 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.
=>反応, 応答, 返答, 返報, 反響, 答唱句
Overview of noun response
The noun response has 7 senses (first 5 from tagged texts)
1. (11) response -- (a result; "this situation developed in response to events in Africa")
2. (11) reaction, response -- (a bodily process occurring due to the effect of some antecedent
stimulus or agent; "a bad reaction to the medicine"; "his responses have slowed with age")
3. (6) answer, reply, response -- (a statement (either spoken or written) that is made to reply to a
question or request or criticism or accusation; "I waited several days for his answer"; "he wrote
replies to several of his critics")
4. (4) reception, response -- (the manner in which something is greeted; "she did not expect the
cold reception she received from her superiors")
5. (1) response -- (a phrase recited or sung by the congregation following a versicle by the priest
or minister)
6. reply, response -- (the speech act of continuing a conversational exchange; "he growled his
reply")
7. response -- (the manner in which an electrical or mechanical device responds to an input signal
or a range of input signals)
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