* Targeted delivery of 5-fluorouracil to HT-29 cells using high efficient folic acid-conjugated nanoparticles.
- The incorporation of a high percentage of targeting molecules into drug delivery system is one of the important methods for improving efficacy of targeting therapeutic drugs to cancer cells. PLGA-based drug delivery carriers with folic acid (FA) as targeting molecule have a low targeting efficiency due to a low FA conjugation ratio. In this work, we fabricated a FA-conjugated PLGA system using a crosslinker 1, 3-diaminopropane and have achieved a high conjugation ratio of 46.7% (mol/mol). The as-prepared PLGA-based biomaterial was used to encapsulate therapeutic drug 5-fluorouracil (5-FU) into nanoparticles. In the in vitro experiments, an IC₅₀ of 5.69 µg/mL has been achieved for 5-FU loaded PLGA-1, 3-diaminopropane-folic acid nanoparticles on HT-29 cancer cells and is significantly lower than that of 5-FU and 5-FU loaded PLGA nanoparticles which only have an IC₅₀ of 22.9 and 14.17 µg/mL, respectively. The fluorescent microscopy images showed that nanoparticles with FA are largely taken up by HT-29 cancer cells and the targeting nanoparticles have more affinity to cancer cells than the pure drugs and untreated nanoparticles. Therefore, the 1, 3-diaminopropane can facilitate the conjugation of FA to PLGA to form a novel polymer and 5-FU loaded PLGA-1, 3-diaminopropane-folic acid nanoparticles can be a highly efficient system for specific delivery of drugs to cancer cells.
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Overview of noun due
The noun due has 2 senses (first 1 from tagged texts)
1. (4) due -- (that which is deserved or owed; "give the devil his due")
2. due -- (a payment that is due (e.g., as the price of membership); "the society dropped him for
non-payment of dues")
Overview of adj due
The adj due has 4 senses (first 2 from tagged texts)
1. (6) due -- (owed and payable immediately or on demand; "payment is due")
2. (1) due -- (scheduled to arrive; "the train is due in 15 minutes")
3. due -- (suitable to or expected in the circumstances; "all due respect"; "due cause to honor
them"; "a long due promotion"; "in due course"; "due esteem"; "exercising due care")
4. ascribable, due, imputable, referable -- (capable of being assigned or credited to; "punctuation
errors ascribable to careless proofreading"; "the cancellation of the concert was due to the rain";
"the oversight was not imputable to him")
Overview of adv due
The adv due has 1 sense (no senses from tagged texts)
1. due -- (directly or exactly; straight; "went due North")
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