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Acupoint nanocomposite hydrogel for simulation of acupuncture and targeted delivery of triptolide against rheumatoid arthritis

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机构: [1]School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023,China [2]Key Laboratory of Acupuncture and Medicine Research of Ministryof Education, Nanjing 210023, China [3]Nantong First People’s Hospital,Nantong 226001, China [4]Yunnan Provincial Key Laboratory of EntomologicalBiopharmaceutical R&D, Dali University, Dali 671000, China [5]Gusu School,Nanjing Medical University, Suzhou 215002, China [6]Jiangyin Hospital Affiliatedto Nanjing University of Chinese Medicine, Jiangyin 214400, China
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Attenuating inflammatory response and relieving pain are two therapeutic therapeutical goals for rheumatoid arthritis (RA). Anti-inflammatory and analgesic drugs are often associated with many adverse effects due to nonspecific distribution. New drug delivery systems with practical targeting ability and other complementary strategies urgently need to be explored. To achieve this goal, an acupoint drug delivery system that can target deliver anti-inflammatory drugs and simulate acupuncture in relieving pain was constructed, which can co-deliver triptolide (TP) and 2-chloro-N (6)-cyclopentyl adenosine (CCPA).We have successfully demonstrated that acupoint nanocomposite hydrogel composed of TP-Human serum album nanoparticles (TP@HSA NPs) and CCPA could effectively treat RA. The result shows that CCPA-Gel can enhance analgesic effects specifically at the acupoint, while the mechanical and thermal pain threshold was 4.9 and 1.6 times compared with non-acupoint, respectively, and the nanocomposite gel further enhanced. Otherwise, the combination of acupoint and nanocomposite hydrogel exerted synergetic improvement of inflammation, bone erosion, and reduction of systemic toxicity. Furthermore, it could regulate inflammatory factors and restore the balance of Th17/Treg cells, which provided a novel and effective treatment strategy for RA. Interestingly, acupoint administration could improve the accumulation of the designed nanomedicine in arthritic paws (13.5% higher than those in non-acupoint at 48 h), which may explain the better therapeutic efficiency and low toxicity.This novel therapeutic approach-acupoint nanocomposite hydrogel, builds a bridge between acupuncture and drugs which sheds light on the combination of traditional and modern medicine.© 2021. The Author(s).

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出版当年[2021]版:
大类 | 1 区 工程技术
小类 | 2 区 生物工程与应用微生物 3 区 纳米科技
最新[2023]版:
大类 | 1 区 生物学
小类 | 1 区 生物工程与应用微生物 2 区 纳米科技
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第一作者机构: [1]School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023,China [3]Nantong First People’s Hospital,Nantong 226001, China
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