Particle size affects concentration-dependent cytotoxicity of chitosan nanoparticles towards mouse hematopoietic stem cells

Siti Sarah Omar Zaki, Mohd Nazmi Ibrahim, Haliza Katas

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Chitosan nanoparticles (CSNPs) have been extensively applied in medical and pharmaceutical fields as promising drug delivery systems. Despite that, the safety of CSNPs remains inadequate and needs further investigation, particularly on hematopoietic stem cells (HSCs). CSNPs were prepared by ionic gelation method and later were characterized for their physical characteristics (particle size and zeta potential). Cytotoxicity of CSNPs was assessed by MTT assay. Particle size was highly influenced by chitosan concentration and molecular weight (medium and high molecular weight (MMW and HMW)). Higher chitosan concentration and molecular weight produced larger nanoparticles. Zeta potential of CSNPs was not significantly affected by chitosan concentrations and molecular weights used in the present study. MMW had a better stability than HMW CSNPs as their particle size and zeta potential were not significantly altered after autoclaving. Cytotoxicity of CSNPs was influenced by zeta potential and particle size. On the other hand, chitosan concentration and molecular weight indirectly influenced cytotoxicity by affecting particle size and zeta potential of CSNPs. In conclusion, cytotoxicity of CSNPs was mainly attributed to their physical characteristics and this opens a strategy to ensure the safety of CSNPs applications in stem cell technology.

Original languageEnglish
Article number919658
JournalJournal of Nanotechnology
Volume2015
DOIs
Publication statusPublished - 2015

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Chitosan
Cytotoxicity
Stem cells
Particle size
Nanoparticles
Zeta potential
Molecular weight
Gelation
Drug products
Assays

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Particle size affects concentration-dependent cytotoxicity of chitosan nanoparticles towards mouse hematopoietic stem cells. / Omar Zaki, Siti Sarah; Ibrahim, Mohd Nazmi; Katas, Haliza.

In: Journal of Nanotechnology, Vol. 2015, 919658, 2015.

Research output: Contribution to journalArticle

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