2020年8月30日
Blood retention and antigenicity of polycarboxybetaine-modified liposomes
International Journal of Pharmaceutics
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- 巻
- 586
- 号
- 開始ページ
- 119521
- 終了ページ
- 119521
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.ijpharm.2020.119521
Zwitterionic polycarboxybetaines (PCBs) have gained attention as alternative stealth polymers whose liposomal formulation and protein conjugates were reported not to elicit anti-polymer antibodies. Here, we studied the blood retention and antigenicity of liposomes modified with PCBs focusing on their chemical structures and doses. We compared PCBs with either 1 or 3 (PCB1 or PCB3) spacer carbons between the carboxylate and ammonium groups. PCB3-modified liposomes had a short blood retention, whereas PCB1-modified liposomes demonstrated extended blood retention that was somewhat superior to PEGylated liposome. This confirmed the excellent non-fouling nature of PCB1 reported previously. Interestingly, PCB1-liposome as well as PCB3-liposome elicited specific IgMs toward each PCB. The dose-dependent production of specific IgMs to PCB-liposomes was similar to that of PEGylated liposome, i.e., high doses of PCB-liposomes reduced the production of specific IgMs, termed immunological tolerance. These results indicate the importance of investigating the effect of dose to clarify the existence of antigenicity of stealth polymers.
- リンク情報
- ID情報
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- DOI : 10.1016/j.ijpharm.2020.119521
- ISSN : 1873-3476
- ISSN : 0378-5173
- ORCIDのPut Code : 97728637
- SCOPUS ID : 85086721197