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Related Concept Videos

Modified-Release Drug Delivery Systems: Site-Targeted01:24

Modified-Release Drug Delivery Systems: Site-Targeted

Site-targeted drug delivery systems enhance therapeutic efficacy while minimizing systemic toxicity and treatment costs. Unlike conventional methods, these systems ensure precise drug delivery, improving bioavailability and reducing side effects. Targeted drug delivery is classified into three levels. First-order targeting directs drugs to the capillary beds of specific organs or tissues. Second-order targets specific cell types, such as tumor cells, using receptor-mediated interactions.

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Lipid-Coated Mesoporous Silica Particles for pH-Sensitive Tumor-Targeted Paclitaxel: Development, Characterization.

Yingyue Deng1,2, Tao Zhang1,2, Jiaru Zhou1,2

  • 1Guangdong Pharmaceutical University; Guangzhou, China.

Journal of Cancer
|October 6, 2025
PubMed
Summary
This summary is machine-generated.

Lipid-shell mesoporous silica nanoparticles (LMSNs) effectively deliver paclitaxel (PTX) to tumors. These novel nanoparticle carriers demonstrate enhanced drug retention and improved pharmacokinetic profiles compared to traditional treatments.

Keywords:
Paclitaxelantitumorcontrollable drug deliveryliposomesmesoporous silica nanoparticlespH sensitivity

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Area of Science:

  • Biomaterials Science
  • Nanotechnology
  • Pharmacology

Background:

  • Nanoparticle drug delivery systems offer targeted delivery to tumor cells, minimizing off-target effects.
  • Selective delivery enhances drug retention and reduces non-specific binding.
  • Mesoporous silica nanoparticles (MSNs) are investigated for their potential as drug carriers.

Purpose of the Study:

  • To construct and characterize paclitaxel (PTX)-loaded lipid-shell mesoporous silica nanoparticles (LMSNs).
  • To evaluate the anti-cancer drug delivery capabilities of LMSNs.
  • To assess the in vitro and in vivo performance of PTX-LMSNs.

Main Methods:

  • Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) for structural analysis.
  • High-performance liquid chromatography (HPLC) for drug loading (DL%) and entrapment efficiency (EE%).
  • In vitro drug release studies, in vivo imaging, tissue distribution, and pharmacokinetic analysis.

Main Results:

  • SEM confirmed spherical MSNs with fine pores; TEM verified uniform core-shell structures of PTX-LMSNs.
  • High drug loading capacity (21.75%) and pH-dependent in vitro drug release observed.
  • In vivo imaging showed prolonged retention; pharmacokinetic studies indicated significantly longer half-life compared to Taxol.

Conclusions:

  • LMSNs exhibit a promising core-shell structure suitable for drug delivery.
  • pH-dependent drug release favors accumulation in acidic tumor microenvironments.
  • LMSNs demonstrate superior pharmacokinetic properties and prolonged in vivo retention, positioning them as a highly promising antineoplastic drug carrier system.