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Synthesis and Characterization of Dual-Sensitive Fluorescent Nanogels for Enhancing Drug Delivery and Tracking Intracellular Drug Delivery.
Int J Mol Sci. 2017 May 19; 18(5)IJ

Abstract

Here, dual-sensitive fluorescent branched alginate-polyethyleneimine copolymer (bAPSC) nanogels were synthesized from thiolated alginate and stearoyl-derivatized branched polyethyleneimine. The formation of bAPSC conjugates was confirmed through proton nuclear magnetic resonance and Fourier transform infrared spectroscopy, whereas dynamic light scattering was used to measure the particle size and ζ potential of the nanogels. The fluorescent properties of the nanogels were confirmed through fluorescent spectroscopy and microscopy. In addition to the excitation-dependent fluorescence behavior, the fluorescence emission intensity of bAPSC was altered by both pH and γ-irradiation. This intensity was higher at a lower pH than at a higher pH, and it slightly decreased after γ-irradiation. The drug loading and encapsulation efficiency of bAPSC were 25.9% and 11.2%, respectively. An in vitro drug release study revealed that the synthesized nanogels release their doxorubicin (Dox) contents in a time-dependent manner, and the drug release was higher after 96 h of incubation. Approximately 43.74% and 88.36% of Dox was released after 96 h of incubation at pH 5.5 in the absence and presence of glutathione (GSH), respectively. However, relatively lower drug release, approximately 21.6% and 16%, was observed in the presence and absence of GSH at pH 7.4, respectively. Fluorescence microscopy confirmed that Dox-loaded bAPSC nanogels were internalized by HeLa cells, and drug distribution was easily tracked using fluorescent materials without additional probing agents. Moreover, cellular cytotoxicity and hemolysis results revealed less cytotoxicity and hemocompatibility of the synthesized nanogels, confirming that they are the most favorable alternative drug carriers for drug delivery systems.

Authors+Show Affiliations

Institute of Toxicology, College of Medicine, National Taiwan University, Taipei 106, Taiwan. szuyuanwu5399@gmail.com. Department of Radiation Oncology, Wan Fang Hospital, Taipei Medical University, Taipei 116, Taiwan. szuyuanwu5399@gmail.com. Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan. szuyuanwu5399@gmail.com. Department of Biotechnology, Hungkuang University, Taichung 433, Taiwan. szuyuanwu5399@gmail.com.Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan. tilish4ayane@yahoo.com.Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan. sse2a@hotmail.com.Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 106, Taiwan. h.c.tsai@mail.ntust.edu.tw.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28534813

Citation

Wu, Szu-Yuan, et al. "Synthesis and Characterization of Dual-Sensitive Fluorescent Nanogels for Enhancing Drug Delivery and Tracking Intracellular Drug Delivery." International Journal of Molecular Sciences, vol. 18, no. 5, 2017.
Wu SY, Debele TA, Kao YC, et al. Synthesis and Characterization of Dual-Sensitive Fluorescent Nanogels for Enhancing Drug Delivery and Tracking Intracellular Drug Delivery. Int J Mol Sci. 2017;18(5).
Wu, S. Y., Debele, T. A., Kao, Y. C., & Tsai, H. C. (2017). Synthesis and Characterization of Dual-Sensitive Fluorescent Nanogels for Enhancing Drug Delivery and Tracking Intracellular Drug Delivery. International Journal of Molecular Sciences, 18(5). https://doi.org/10.3390/ijms18051090
Wu SY, et al. Synthesis and Characterization of Dual-Sensitive Fluorescent Nanogels for Enhancing Drug Delivery and Tracking Intracellular Drug Delivery. Int J Mol Sci. 2017 May 19;18(5) PubMed PMID: 28534813.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Synthesis and Characterization of Dual-Sensitive Fluorescent Nanogels for Enhancing Drug Delivery and Tracking Intracellular Drug Delivery. AU - Wu,Szu-Yuan, AU - Debele,Tilahun Ayane, AU - Kao,Yu-Chih, AU - Tsai,Hsieh-Chih, Y1 - 2017/05/19/ PY - 2017/03/03/received PY - 2017/04/16/revised PY - 2017/05/12/accepted PY - 2017/5/24/entrez PY - 2017/5/24/pubmed PY - 2018/3/8/medline KW - alginate KW - fluorescent organic nanoparticles KW - nanogel KW - polyethyleneimine KW - redox-sensitive JF - International journal of molecular sciences JO - Int J Mol Sci VL - 18 IS - 5 N2 - Here, dual-sensitive fluorescent branched alginate-polyethyleneimine copolymer (bAPSC) nanogels were synthesized from thiolated alginate and stearoyl-derivatized branched polyethyleneimine. The formation of bAPSC conjugates was confirmed through proton nuclear magnetic resonance and Fourier transform infrared spectroscopy, whereas dynamic light scattering was used to measure the particle size and ζ potential of the nanogels. The fluorescent properties of the nanogels were confirmed through fluorescent spectroscopy and microscopy. In addition to the excitation-dependent fluorescence behavior, the fluorescence emission intensity of bAPSC was altered by both pH and γ-irradiation. This intensity was higher at a lower pH than at a higher pH, and it slightly decreased after γ-irradiation. The drug loading and encapsulation efficiency of bAPSC were 25.9% and 11.2%, respectively. An in vitro drug release study revealed that the synthesized nanogels release their doxorubicin (Dox) contents in a time-dependent manner, and the drug release was higher after 96 h of incubation. Approximately 43.74% and 88.36% of Dox was released after 96 h of incubation at pH 5.5 in the absence and presence of glutathione (GSH), respectively. However, relatively lower drug release, approximately 21.6% and 16%, was observed in the presence and absence of GSH at pH 7.4, respectively. Fluorescence microscopy confirmed that Dox-loaded bAPSC nanogels were internalized by HeLa cells, and drug distribution was easily tracked using fluorescent materials without additional probing agents. Moreover, cellular cytotoxicity and hemolysis results revealed less cytotoxicity and hemocompatibility of the synthesized nanogels, confirming that they are the most favorable alternative drug carriers for drug delivery systems. SN - 1422-0067 UR - https://www.unboundmedicine.com/medline/citation/28534813/Synthesis_and_Characterization_of_Dual_Sensitive_Fluorescent_Nanogels_for_Enhancing_Drug_Delivery_and_Tracking_Intracellular_Drug_Delivery_ L2 - http://www.mdpi.com/resolver?pii=ijms18051090 DB - PRIME DP - Unbound Medicine ER -