Chondroitin sulfate liposome: clustering toward high functional efficiency

Author:

Shioiri Tatsumasa1,Tsuchimoto Jun1,Fukushige Kaori23,Takeuchi Takao23,Naito Munekazu23,Watanabe Hideto1,Sugiura Nobuo1

Affiliation:

1. Institute for Molecular Science of Medicine, Aichi Medical University , Nagakute, Aichi , Japan

2. Department of Anatomy , School of Medicine, , 1-1 Yazakokarimata, Nagakute-shi 480-1195 , Japan

3. Aichi Medical University , School of Medicine, , 1-1 Yazakokarimata, Nagakute-shi 480-1195 , Japan

Abstract

Abstract Chondroitin sulfate (CS) is a linear polysaccharide chain of alternating residues of glucuronic acid (GlcA) and N-acetylgalactosamine (GalNAc), modified with sulfate groups. Based on the structure, CS chains bind to bioactive molecules specifically and regulate their functions. For example, CS whose GalNAc is sulfated at the C4 position, termed CSA, and CS whose GalNAc is sulfated at both C4 and C6 positions, termed CSE, bind to a malaria protein VAR2CSA and receptor type of protein tyrosine phosphatase sigma (RPTPσ), respectively, in a specific manner. Here, we modified CSA and CSE chains with phosphatidylethanolamine (PE) at a reducing end, attached them to liposomes containing phospholipids and generated CSA and CSE liposomes. The CS-PE was incorporated into the liposome particles efficiently. Inhibition ELISA revealed specific interaction of CSA and CSE with recombinant VAR2CSA and RPTPσ, respectively, more efficiently than CS chains alone. Furthermore, CSE liposome was specifically incorporated into RPTPσ-expressing HEK293T cells. These results indicate CS liposome as a novel and efficient drug delivery system, especially for CS-binding molecules.

Funder

Japan Society for the Promotion of Science

Publisher

Oxford University Press (OUP)

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