Abstract:
:Poor cellular uptake and slow intracellular drug release remain the main barriers for the efficient application of micellar delivery system. Taking advantage of the overexpressed CD44 receptor and mild acidic microenvironment of tumour cells, CD44-targeted pH-responsive micelles based on the self-assembly of histidine-hyaluronic acid-dodecylamine (His-HA-DA) were prepared for the delivery of doxorubicin (DOX). These micelles exhibited pH-responsive behaviour with increased particle size, decreased encapsulation efficiency (EE%) of DOX and rapid release of DOX triggered by low pH. Compared with free DOX, DOX/HHD exhibited relatively high cellular uptake mainly via the CD44-mediated endocytosis. The on-demand intracellular release of DOX from DOX/HHD led to improved cytotoxicity. DOX/HHD also showed great penetration efficiency in 3D tumour spheres in vitro. Moreover, these micelles with suitable particle size gained excellent tumour-targeting effects, as well as improved anti-tumour effects and reduced side effects in vivo. In conclusion, these micelles with CD44 targeted and pH-responsive behaviours provide a promising strategy for the efficient delivery of anti-tumour drugs in vivo.
journal_name
Artif Cells Nanomed Biotechnoljournal_title
Artificial cells, nanomedicine, and biotechnologyauthors
Yang S,Chen W,Li W,Song J,Gao Y,Si W,Li X,Cui B,Yu Tdoi
10.1080/21691401.2021.1884085keywords:
["CD44 targeted","doxorubicin","micelles","on-demand release","pH responsive"]subject
Has Abstractpub_date
2021-12-01 00:00:00pages
173-184issue
1eissn
2169-1401issn
2169-141Xjournal_volume
49pub_type
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