PMID- 24282819 OWN - NLM STAT- MEDLINE DCOM- 20140611 LR - 20211021 IS - 2314-6141 (Electronic) IS - 2314-6133 (Print) VI - 2013 DP - 2013 TI - Folic acid-chitosan conjugated nanoparticles for improving tumor-targeted drug delivery. PG - 723158 LID - 10.1155/2013/723158 [doi] LID - 723158 AB - OBJECTIVE: To prepare folic acid-chitosan conjugated nanoparticles (FA-CS NPs) and evaluate their targeting specificity on tumor cells. METHODS: Chitosan (CS) NPs were prepared by ionic cross linking method, and folic acid (FA) was conjugated with CS NPs by electrostatic interaction. The properties of NPs were investigated, and doxorubicin hydrochloride (Dox) as a model drug was encapsulated for investigating drug release pattern in vitro. The cytotoxicity and cellular uptake of FA-CS NPs were also investigated. RESULTS: The results reveal that the obtained FA-CS NPs were monodisperse nanoparticles with suitable average size and positive surface charge. Dox was easily loaded into FA-CS NPs, and the release pattern showed a long and biphasic drug release. Noticeable phagocytosis effect was observed in the presence of rhodamine B-labeled FA-CSNPs when incubating with the folate receptor-positive SMMC-7221 cells. CONCLUSION: Compared with the unmodified CS NPs, FA-CS NPs showed much higher cell uptaking ability due to the known folate-receptor mediated endocytosis. FA-CS NPs provide a potential way to enhance the using efficiency of antitumor drug by folate receptor mediated targeting delivery. FAU - Song, Huijuan AU - Song H AD - Central Laboratory for Science and Technology, Liaoning Medical University, Jinzhou 121000, China. FAU - Su, Chang AU - Su C FAU - Cui, Wenyu AU - Cui W FAU - Zhu, Bingya AU - Zhu B FAU - Liu, Liwei AU - Liu L FAU - Chen, Zhenhua AU - Chen Z FAU - Zhao, Liang AU - Zhao L LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20131026 PL - United States TA - Biomed Res Int JT - BioMed research international JID - 101600173 RN - 0 (Antibiotics, Antineoplastic) RN - 0 (Folic Acid Transporters) RN - 0 (Neoplasm Proteins) RN - 80168379AG (Doxorubicin) RN - 9012-76-4 (Chitosan) RN - 935E97BOY8 (Folic Acid) SB - IM MH - *Antibiotics, Antineoplastic/chemistry/pharmacokinetics/pharmacology MH - Cell Line, Tumor MH - *Chitosan/chemistry/pharmacokinetics/pharmacology MH - *Doxorubicin/chemistry/pharmacokinetics/pharmacology MH - Drug Delivery Systems MH - *Folic Acid/chemistry/pharmacokinetics/pharmacology MH - Folic Acid Transporters/agonists/metabolism MH - Humans MH - Nanoparticles/*chemistry MH - Neoplasm Proteins/agonists/metabolism MH - Neoplasms/*drug therapy/metabolism/pathology MH - Phagocytosis/drug effects PMC - PMC3825055 EDAT- 2013/11/28 06:00 MHDA- 2014/06/12 06:00 PMCR- 2013/10/26 CRDT- 2013/11/28 06:00 PHST- 2013/07/06 00:00 [received] PHST- 2013/08/28 00:00 [revised] PHST- 2013/09/10 00:00 [accepted] PHST- 2013/11/28 06:00 [entrez] PHST- 2013/11/28 06:00 [pubmed] PHST- 2014/06/12 06:00 [medline] PHST- 2013/10/26 00:00 [pmc-release] AID - 10.1155/2013/723158 [doi] PST - ppublish SO - Biomed Res Int. 2013;2013:723158. doi: 10.1155/2013/723158. Epub 2013 Oct 26.