Hyaluronic Acid-Tocopherol Succinate-Based Self-Assembling Micelles for Targeted Delivery of Rifampicin to Alveolar Macrophages

J Biomed Nanotechnol. 2015 Aug;11(8):1312-29. doi: 10.1166/jbn.2015.2091.

Abstract

We developed a target drug delivery system for the treatment of tuberculosis using rifampicin (RIF) incorporated into hyaluronic acid-tocopherol succinate (HA-TS) micelles. The RIF-HA-TS micelles were physicochemically characterized and the cellular uptake of RIF-HA-TS micelles on murine alveolar macrophage MH-S cells was investigated. Furthermore, the cytokine secreting activities of the alveolar macrophages after treatment with RIF-HA-TS micelles were evaluated. The results of the studies indicate that (i) mean particle size of HA-TS micelles was in the range of 212-294.6 nm depending on the degree of substitution (DS) of the hydrophobic moiety. The incorporated RIF was sustained released from RIF loaded HA-TS micelles (ii) cellular uptake of RIF-HA-TS micelles was dose and energy dependent (iii) RIF-HA-TS micelles had a significant uptake in comparison to free RIF, with the highest uptake at 12 h (iv) RIF-HA-TS micelles were taken up into cells via phygocytosis as well as CD44 receptor-mediate endocytosis (v) beside E. coli lipopolysccharide (LPS), HA-TS micelles also could activate MH-S cells, which improved the RIF-HA-TS uptake (vi) RIF-HA-TS micelles induced higher concentration of Th1 cytokines than free drug, which will help to enhance the anti-tuberculosis activity. The results of the current studies demonstrate the feasibility of targeting macrophages and the possibility of using the HA-TS micelles for tuberculosis treatment.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Antitubercular Agents / administration & dosage
  • Antitubercular Agents / pharmacokinetics
  • Cell Line
  • Cell Survival / drug effects
  • Cell Survival / immunology
  • Cytokines / immunology
  • Delayed-Action Preparations / administration & dosage
  • Delayed-Action Preparations / chemistry*
  • Diffusion
  • Hyaluronic Acid / chemistry*
  • Macrophages, Alveolar / drug effects
  • Macrophages, Alveolar / immunology
  • Macrophages, Alveolar / metabolism*
  • Mice
  • Micelles
  • Nanocapsules / administration & dosage
  • Nanocapsules / chemistry
  • Nanocapsules / ultrastructure
  • Particle Size
  • Rifampin / administration & dosage*
  • Rifampin / pharmacokinetics*
  • alpha-Tocopherol / chemistry*

Substances

  • Antitubercular Agents
  • Cytokines
  • Delayed-Action Preparations
  • Micelles
  • Nanocapsules
  • Hyaluronic Acid
  • alpha-Tocopherol
  • Rifampin