2015 Journal of tissue engineering and regenerative medicine
* On the use of dexamethasone-loaded liposomes to induce the osteogenic differentiation of human mesenchymal stem cells.
- Stem cells have received considerable attention by the scientific community because of their potential for tissue engineering and regenerative medicine. The most frequently used method to promote their differentiation is supplementation of the in vitro culture medium with growth/differentiation factors (GDFs). The limitations of that strategy caused by the short half-life of GDFs limit its efficacy in vivo and consequently its clinical use. Thus, the development of new concepts that enable the bioactivity and bioavailability of GDFs to be protected, both in vitro and in vivo, is very relevant. Nanoparticle-based drug delivery systems can be injected, protect the GDFs and enable spatiotemporal release kinetics to be controlled. Liposomes are well-established nanodelivery devices presenting significant advantages, viz. a high load-carrying capacity, relative safety and easy production, and a versatile nature in terms of possible formulations and surface functionalization. The main objective of the present study was to optimize the formulation of liposomes to encapsulate dexamethasone (Dex). Our results showed that the optimized Dex-loaded liposomes do not have any cytotoxic effect on human bone marrow-derived mesenchymal stem cells (hBMSCs). More importantly, they were able to promote an earlier induction of differentiation of hBMSCs into the osteogenic lineage, as demonstrated by the expression of osteoblastic markers, both phenotypically and genotypically. We concluded that Dex-loaded liposomes represent a viable nanoparticle strategy with enhanced safety and efficacy for tissue engineering and regenerative medicine.
=>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 ---