An Effective Oral Nanodelivery Material for Curcumin: Ingenious Utilization of Gastrointestinal Absorption Characteristics

Curcumin exhibits compromised bioavailability upon oral administration due to its inherent limitations, including low aqueous solubility, poor membrane permeability, and chemical instability. Inspired by the efficient mechanism by which viruses penetrate mucus and cells, we constructed an electrical...

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Main Authors: Qiuxu An, Yuanyuan Liu, Guodong Liang, Yuewu Wang, Fengying Liang, Yunyang Bai, Chaolu Eerdun, Riqing Cheng, Haifeng Zhang, Xiaojie Lv
Format: Article
Language:English
Published: MDPI AG 2025-06-01
Series:Molecules
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Online Access:https://www.mdpi.com/1420-3049/30/12/2536
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author Qiuxu An
Yuanyuan Liu
Guodong Liang
Yuewu Wang
Fengying Liang
Yunyang Bai
Chaolu Eerdun
Riqing Cheng
Haifeng Zhang
Xiaojie Lv
author_facet Qiuxu An
Yuanyuan Liu
Guodong Liang
Yuewu Wang
Fengying Liang
Yunyang Bai
Chaolu Eerdun
Riqing Cheng
Haifeng Zhang
Xiaojie Lv
author_sort Qiuxu An
collection DOAJ
description Curcumin exhibits compromised bioavailability upon oral administration due to its inherent limitations, including low aqueous solubility, poor membrane permeability, and chemical instability. Inspired by the efficient mechanism by which viruses penetrate mucus and cells, we constructed an electrically neutral and hydrophilic nanocarrier (C60-CPP5/Pser@CUR) using fullerene C60 as the matrix modified with cell-penetrating peptides and phosphoserine. CPP5 facilitates efficient cellular internalization of therapeutic agents, while the incorporation of phosphoserine serves as a charge reversal strategy. This design enables dynamic surface charge modulation to enhance curcumin’s trans-barrier delivery efficiency. Systematic in vitro and in vivo evaluations demonstrated that the synthesized carrier significantly improved the synergistic effects of mucus penetration and cellular uptake. The Caco-2 cellular uptake of curcumin-loaded carriers was 2.26 times higher than that of free drugs. In a single-pass intestinal perfusion study in rat models, this nanocarrier significantly enhanced the absorption of curcumin in the duodenal and colonic regions. In the in vivo experiments, compared with free curcumin, its C<sub>max</sub> and AUC<sub>0–t</sub> achieved improvements of 2.60 times and 14.70 times, respectively. This virus-mimetic platform dynamically adapts to micro-environmental demands through charge reversal mechanisms, effectively overcoming sequential biological barriers and providing a robust strategy for oral delivery of hydrophobic therapeutics.
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spelling doaj-art-4f3b3b43b17a43c89d3f4d9cdc80adcf2025-06-25T14:13:29ZengMDPI AGMolecules1420-30492025-06-013012253610.3390/molecules30122536An Effective Oral Nanodelivery Material for Curcumin: Ingenious Utilization of Gastrointestinal Absorption CharacteristicsQiuxu An0Yuanyuan Liu1Guodong Liang2Yuewu Wang3Fengying Liang4Yunyang Bai5Chaolu Eerdun6Riqing Cheng7Haifeng Zhang8Xiaojie Lv9College of Pharmacy, Inner Mongolia Medical University, Hohhot 010110, ChinaCollege of Pharmacy, Inner Mongolia Medical University, Hohhot 010110, ChinaCollege of Pharmacy, Inner Mongolia Medical University, Hohhot 010110, ChinaCollege of Pharmacy, Inner Mongolia Medical University, Hohhot 010110, ChinaCollege of Pharmacy, Inner Mongolia Medical University, Hohhot 010110, ChinaCollege of Pharmacy, Inner Mongolia Medical University, Hohhot 010110, ChinaCollege of Pharmacy, Inner Mongolia Medical University, Hohhot 010110, ChinaCollege of Pharmacy, Inner Mongolia Medical University, Hohhot 010110, ChinaCollege of Basic Medicine, Inner Mongolia Medical University, Hohhot 010110, ChinaCollege of Pharmacy, Inner Mongolia Medical University, Hohhot 010110, ChinaCurcumin exhibits compromised bioavailability upon oral administration due to its inherent limitations, including low aqueous solubility, poor membrane permeability, and chemical instability. Inspired by the efficient mechanism by which viruses penetrate mucus and cells, we constructed an electrically neutral and hydrophilic nanocarrier (C60-CPP5/Pser@CUR) using fullerene C60 as the matrix modified with cell-penetrating peptides and phosphoserine. CPP5 facilitates efficient cellular internalization of therapeutic agents, while the incorporation of phosphoserine serves as a charge reversal strategy. This design enables dynamic surface charge modulation to enhance curcumin’s trans-barrier delivery efficiency. Systematic in vitro and in vivo evaluations demonstrated that the synthesized carrier significantly improved the synergistic effects of mucus penetration and cellular uptake. The Caco-2 cellular uptake of curcumin-loaded carriers was 2.26 times higher than that of free drugs. In a single-pass intestinal perfusion study in rat models, this nanocarrier significantly enhanced the absorption of curcumin in the duodenal and colonic regions. In the in vivo experiments, compared with free curcumin, its C<sub>max</sub> and AUC<sub>0–t</sub> achieved improvements of 2.60 times and 14.70 times, respectively. This virus-mimetic platform dynamically adapts to micro-environmental demands through charge reversal mechanisms, effectively overcoming sequential biological barriers and providing a robust strategy for oral delivery of hydrophobic therapeutics.https://www.mdpi.com/1420-3049/30/12/2536fullereneintestinal absorption barriernanocarriercharge reversalcell-penetrating peptides
spellingShingle Qiuxu An
Yuanyuan Liu
Guodong Liang
Yuewu Wang
Fengying Liang
Yunyang Bai
Chaolu Eerdun
Riqing Cheng
Haifeng Zhang
Xiaojie Lv
An Effective Oral Nanodelivery Material for Curcumin: Ingenious Utilization of Gastrointestinal Absorption Characteristics
Molecules
fullerene
intestinal absorption barrier
nanocarrier
charge reversal
cell-penetrating peptides
title An Effective Oral Nanodelivery Material for Curcumin: Ingenious Utilization of Gastrointestinal Absorption Characteristics
title_full An Effective Oral Nanodelivery Material for Curcumin: Ingenious Utilization of Gastrointestinal Absorption Characteristics
title_fullStr An Effective Oral Nanodelivery Material for Curcumin: Ingenious Utilization of Gastrointestinal Absorption Characteristics
title_full_unstemmed An Effective Oral Nanodelivery Material for Curcumin: Ingenious Utilization of Gastrointestinal Absorption Characteristics
title_short An Effective Oral Nanodelivery Material for Curcumin: Ingenious Utilization of Gastrointestinal Absorption Characteristics
title_sort effective oral nanodelivery material for curcumin ingenious utilization of gastrointestinal absorption characteristics
topic fullerene
intestinal absorption barrier
nanocarrier
charge reversal
cell-penetrating peptides
url https://www.mdpi.com/1420-3049/30/12/2536
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