Effect of solubilizing agents on mupirocin loading into and release from PEGylated nanoliposomes

Ahuva Cern1, Einat Nativ-Roth2, Amiram Goldblum3

  • 1Laboratory of Membrane and Liposome Research, Department of Biochemistry, IMRIC, The Hebrew University - Hadassah Medical School, Jerusalem, Israel; Molecular Modeling and Drug Design Laboratory, The Institute for Drug Research, The Hebrew University of Jerusalem, Jerusalem, Israel.

Insights

Mupirocin antibiotic loading into nanoliposomes was enhanced using solubilizing agents like propylene glycol and hydroxypropyl-β-cyclodextrin (HPCD). This formulation may enable parenteral delivery by protecting mupirocin from degradation.

Area of Science:

  • Pharmaceutical Sciences
  • Drug Delivery Systems
  • Nanotechnology

Background:

  • Mupirocin is an antibiotic limited to topical use due to rapid in vivo hydrolysis.
  • Nanoliposomal formulation offers potential for parenteral administration and targeted delivery.
  • Solubilizing agents can improve drug loading in liposomes.

Purpose of the Study:

  • To investigate the effect of solubilizing agents on remote mupirocin loading into PEGylated nanoliposomes.
  • To evaluate the impact of these agents on drug stability and release characteristics.

Main Methods:

  • Quantitative structure-property relationship (QSPR) modeling identified mupirocin as suitable for liposomal loading.
  • Nanoliposomes were formulated with PEGylation.
  • Solubilizing agents (propylene glycol, polyethylene glycol 400, hydroxypropyl-β-cyclodextrin) were added to the drug loading solution.
  • Drug loading efficiency and in vitro release were assessed.

Main Results:

  • Propylene glycol increased mupirocin loading into nanoliposomes.
  • Polyethylene glycol 400 had no significant effect on loading.
  • Hydroxypropyl-β-cyclodextrin (HPCD) demonstrated a concentration-dependent effect, enhancing loading at optimal concentrations but inhibiting it at higher levels.
  • Incorporating HPCD during liposome formation increased drug loading and significantly reduced serum-mediated drug release.

Conclusions:

  • Solubilizing agents, particularly propylene glycol and optimized HPCD concentrations, can enhance mupirocin remote loading into nanoliposomes.
  • HPCD inclusion improves drug loading and stability, suggesting potential for developing parenteral mupirocin formulations.
  • PEGylated nanoliposomes with HPCD show promise for protecting mupirocin from degradation and controlling its release.

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