Design of synthetic polymer nanoparticles that inhibit glucose absorption from the intestine

Hiroyuki Koide, Naoki Hayashi, Go Yasuno, Anna Okishima, Yu Hoshino, Hiromichi Egami, Yoshitaka Hamashima, Naoto Oku, Tomohiro Asai

研究成果: ジャーナルへの寄稿学術誌査読


Synthetic polymers prepared using several functional monomers have attracted attention as cost-effective protein affinity reagents and alternative to antibodies. We previously reported the synthesis of poly NIPAm-based nanoparticles (NPs) using several functional monomers that can capture target molecules. In this study, we designed NPs for capturing glucose and inhibiting intestinal absorption in living mice. For capturing glucose, we focused on the Maillard reaction between primary amines and aldehyde residues. We hypothesized that the primary amine-containing NPs can capture the open-chain structure of glucose via the Maillard reaction and inhibit intestinal absorption. NPs were prepared by the precipitation polymerization of NIPAm, N-tert-butylacrylamide (TBAm), trifluoroacetate-protected N-(3-aminopropyl)methacrylamide (T-APM), and N,N′-methylenebisacrylamide. Then, T-APM in NPs was deprotected by NH3 (aq). The amount of glucose captured by NPs depended on the percentage of TBAm and APM in vitro. After 24 h, only 2% of orally administered NPs remained in the body after administration, suggesting that many NPs were excreted without being absorbed. The prepared NPs significantly inhibited an increase in blood glucose concentration after the oral administration of glucose and NPs, indicating that NPs capture glucose and inhibit intestinal absorption. These results show the potential of using synthetic polymer nanoparticles for inhibiting postprandial hyperglycemia.

ジャーナルBiochemical and Biophysical Research Communications
出版ステータス出版済み - 7月 5 2021

!!!All Science Journal Classification (ASJC) codes

  • 生物理学
  • 生化学
  • 分子生物学
  • 細胞生物学


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