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Tumor acidity and CD44 dual targeting hyaluronic acid-coated gold nanorods for combined chemo- and photothermal cancer therapy
作者:Yi Li,Thai Minh Duy Le,Quang Nam Bui,Hong Yu Yang,Doo SungLee
關(guān)鍵字:CD44 dual targeting,photothermal cancer therapy
論文來(lái)源:期刊
具體來(lái)源:https://doi.org/10.1016/j.carbpol.2019.115281Get
發(fā)表時(shí)間:2019年
In this work, tumor acidity and CD44 dual targeting hyaluronic acid-coated gold nanorods (AuNRs) are investigated for combined chemo- and photothermal cancer therapy. Low molecular weight hyaluronic acid (LMWHA) is conjugated with pH-sensitive groups for pH-induced aggregation and lipoic acid for coating of AuNRs. By changing pH-sensitive groups with different pKa values, pH-sensitivity of modified LMWHA can be tuned. After coating modified LMWHA onto AuNRs, biocompatibility of the AuNRs is significantly improved. These LMWHA-coated AuNRs can gradually aggregate under slightly acidic conditions, making them favorable for accumulation at acidic tumor sites. Surface LMWHA allows the nanocomposites to be selectively uptaken by CD44-expressing cancer cells, and AuNRs endows the nanocomposites with excellent photothermal ability. Loading of doxorubicin, a chemical drug, provides the LMWHA-coated AuNRs synergistic cancer cell-killing (in vitro) and tumor growth inhibiting (in vivo) ability. Taken together, these results demonstrate that this multifunctional nanosystem with pH-induced aggregation and CD44 targeting has potential for combined chemo- and photothermal cancer therapy.
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