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Article

Association of Hydrophobic Carboxyl-Terminal Dendrimers with Lymph Node-Resident Lymphocytes

1
Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan
2
Laboratory of Bioanalysis and Molecular Imaging, Graduate School of Pharmaceutical Sciences, Hokkaido University, Kita-12 Nishi-6, Kita-ku, Sapporo, Hokkaido 060-0812, Japan
3
Department of Biological Science, Graduate School of Science, Osaka Prefecture University, 1-2, Gakuen-cho, Naka-ku, Sakai, Osaka 599-8570, Japan
4
Central Institutes of Isotope Science, Hokkaido University, Kita 15 Nishi 7, Kita-ku, Sapporo, Hokkaido 060-0815, Japan
*
Author to whom correspondence should be addressed.
Polymers 2020, 12(7), 1474; https://doi.org/10.3390/polym12071474
Received: 25 May 2020 / Revised: 22 June 2020 / Accepted: 22 June 2020 / Published: 30 June 2020
(This article belongs to the Special Issue Biomedical Polymer Materials II)
Delivery systems to lymph node-resident T cells around tumor tissues are essential for cancer immunotherapy, in order to boost the immune responses. We previously reported that anionic dendrimers, such as carboxyl-, sulfonyl-, and phosphate-terminal dendrimers, were efficiently accumulated in lymph nodes via the intradermal injection. Depending on the terminal structure, their cell association properties were different, and the carboxyl-terminal dendrimers did not associate with any immune cells majorly. In this study, we investigated the delivery of carboxyl-terminal dendrimers with different hydrophobicity to lymph node-resident lymphocytes. Four types of carboxyl-terminal dendrimers—succinylated (C) and 2-carboxy-cyclohexanoylated (Chex) dendrimers with and without phenylalanine (Phe)—were synthesized and named C-den, C-Phe-den, Chex-den, and Chex-Phe-den, respectively. Chex-Phe-den was well associated with lymphocytes, but others were not. Chex-Phe-den, intradermally injected at the footpads of mice, was accumulated in the lymph node, and was highly associated with the lymphocytes, including T cells. Our results suggest that Chex-Phe-den has the potential for delivery to the lymph node-resident T cells, without any specific T cell-targeted ligands. View Full-Text
Keywords: dendrimer; carboxyl terminal; hydrophobicity; lymph node; T cells; phenylalanine dendrimer; carboxyl terminal; hydrophobicity; lymph node; T cells; phenylalanine
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MDPI and ACS Style

Nishimoto, Y.; Nishio, M.; Nagashima, S.; Nakajima, K.; Ohira, T.; Nakai, S.; Nakase, I.; Higashikawa, K.; Kuge, Y.; Matsumoto, A.; Ogawa, M.; Kojima, C. Association of Hydrophobic Carboxyl-Terminal Dendrimers with Lymph Node-Resident Lymphocytes. Polymers 2020, 12, 1474. https://doi.org/10.3390/polym12071474

AMA Style

Nishimoto Y, Nishio M, Nagashima S, Nakajima K, Ohira T, Nakai S, Nakase I, Higashikawa K, Kuge Y, Matsumoto A, Ogawa M, Kojima C. Association of Hydrophobic Carboxyl-Terminal Dendrimers with Lymph Node-Resident Lymphocytes. Polymers. 2020; 12(7):1474. https://doi.org/10.3390/polym12071474

Chicago/Turabian Style

Nishimoto, Yutaka, Misaki Nishio, Shu Nagashima, Kohei Nakajima, Takayuki Ohira, Shinya Nakai, Ikuhiko Nakase, Kei Higashikawa, Yuji Kuge, Akikazu Matsumoto, Mikako Ogawa, and Chie Kojima. 2020. "Association of Hydrophobic Carboxyl-Terminal Dendrimers with Lymph Node-Resident Lymphocytes" Polymers 12, no. 7: 1474. https://doi.org/10.3390/polym12071474

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