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Antigenic Liposomes for Generation of Disease-specific Antibodies
Published on: October 25, 2018
DC-SIGN mediated antigen-targeting using glycan-modified liposomes: formulation considerations.
Medha D Joshi1, Wendy W J Unger, Astrid J van Beelen
1Department of Pharmaceutics, Utrecht University of Pharmaceutical Sciences, Utrecht University, The Netherlands.
International Journal of Pharmaceutics
|March 5, 2011
Summary
Glycoliposomes modified with glycans can target dendritic cells (DCs). However, PEGylation of these glycoliposomes negatively impacted their targeting efficiency to DCs, suggesting non-PEGylated versions are more promising for immune response modulation.
Area of Science:
- Immunology
- Nanotechnology
- Biochemistry
Background:
- Dendritic cells (DCs) are crucial antigen-presenting cells that regulate T cell responses via C-type lectin receptors (CLRs).
- CLRs recognize carbohydrate structures on antigens, mediating antigen uptake and presentation.
- Targeting DCs via CLRs offers a strategy to modulate immune responses.
Purpose of the Study:
- To investigate the feasibility of glycan-modified liposomes (glycoliposomes) for targeting DCs.
- To evaluate the targeting potential of PEGylated versus non-PEGylated glycoliposomes to DC-SIGN, a CLR on DCs.
Main Methods:
- Formulation of PEGylated and non-PEGylated glycoliposomes.
- Assessment of glycoliposome targeting to DCs expressing DC-SIGN.
Main Results:
- Glycoliposomes were successfully formulated with glycans.
- PEGylation of glycoliposomes significantly reduced their ability to target DCs.
- Non-PEGylated glycoliposomes showed potential for DC targeting.
Conclusions:
- Glycan modification of liposomes is a viable strategy for DC targeting.
- PEGylation hinders glycoliposome targeting to DCs, suggesting non-PEGylated constructs are superior for this application.
- These findings provide insights for developing targeted immunotherapies using glycoliposomal delivery systems.
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