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Weiyue S, Ying L, Kanamoto T, Asai D, Takemura H, Nakashima H, Miyazaki K, Yoshida T. Elucidation of anti-HIV mechanism of sulfated cellobiose-polylysine dendrimers. Carbohydr Res 2020; 495:108084. [PMID: 32658833 DOI: 10.1016/j.carres.2020.108084] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 06/17/2020] [Accepted: 06/17/2020] [Indexed: 11/24/2022]
Abstract
Three new spherical sulfated cellobiose-polylysine dendrimers of increasing generations bearing negatively charged sulfate groups were prepared by sulfating the corresponding cellobiose-polylysine dendrimers. The first, second, and third-generation derivatives exhibited potent anti-HIV activity with EC50 values of 3.7, 0.6, and 1.5 μg/mL, respectively, in constant to sulfated oligosaccharides with low anti-HIV activity, while the second-generation sulfated dendrimer was the most active. Surface plasmon resonance measurements with poly-l-lysine bearing positively charged amino acids as a model of the HIV surface glycoprotein gp120, indicated that the second-generation dendrimer had the lowest dissociation constant (KD = 1.86 × 10-12 M). Both the particle size and ζ potential increased in the presence of poly-l-lysine. It was proven that the moderate distance between the terminal sulfated cellobiose units in the second-generation dendrimer favored the high anti-HIV activity, owing to the electrostatic interactions developed due to the cluster effect.
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Affiliation(s)
- Song Weiyue
- Department of Bio and Environmental Chemistry, Kitami Institute of Technology, 165 Koen-cho, Kitami, Hokkaido, 090-8507, Japan
| | - Li Ying
- Department of Bio and Environmental Chemistry, Kitami Institute of Technology, 165 Koen-cho, Kitami, Hokkaido, 090-8507, Japan
| | - Taisei Kanamoto
- Showa Pharmaceutical University, 3-3165 Higashi-Tamagawagakuen, Machida, Tokyo, 194-8543, Japan
| | - Daisuke Asai
- St. Marianna University School of Medicine, Miyamae-ku, Kawasaki, 216-8511, Japan
| | - Hiromu Takemura
- St. Marianna University School of Medicine, Miyamae-ku, Kawasaki, 216-8511, Japan
| | - Hideki Nakashima
- St. Marianna University School of Medicine, Miyamae-ku, Kawasaki, 216-8511, Japan
| | - Kensuke Miyazaki
- Department of Bio and Environmental Chemistry, Kitami Institute of Technology, 165 Koen-cho, Kitami, Hokkaido, 090-8507, Japan
| | - Takashi Yoshida
- Department of Bio and Environmental Chemistry, Kitami Institute of Technology, 165 Koen-cho, Kitami, Hokkaido, 090-8507, Japan.
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