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Lei F, Zeng F, Yu X, Deng Y, Zhang Z, Xu M, Ding N, Tian J, Li C. Oral hydrogel nanoemulsion co-delivery system treats inflammatory bowel disease via anti-inflammatory and promoting intestinal mucosa repair. J Nanobiotechnology 2023; 21:275. [PMID: 37596598 PMCID: PMC10436423 DOI: 10.1186/s12951-023-02045-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Accepted: 08/01/2023] [Indexed: 08/20/2023] Open
Abstract
BACKGROUND Due to oral nano-delivery systems for the treatment of inflammatory bowel disease (IBD) are often failed to accumulated to the colonic site and could not achieve controlled drug release, it's urgent to develop a microenvironment responsive drug delivery to improve therapy efficacy. Inflammation at the IBD site is mainly mediated by macrophages, which are the key effector cells. Excessive inflammation leads to oxidative stress and intestinal mucosal damage. The use of curcumin (CUR) and emodin (EMO) together for the treatment of IBD is promising due to their respective anti-inflammatory and intestinal mucosal repair effects. In view of the pH gradient environment of gastrointestinal tract, here we prepared pH-responsive sodium alginate (SA) hydrogel-coated nanoemulsions to co-deliver CUR and EMO (CUR/EMO NE@SA) to achieve controlled drug release and specifically target macrophages of the colon. RESULTS In this study, a pH-responsive CUR/EMO NE@SA was successfully developed, in which the CUR/EMO NE was loaded by chitosan and further crosslinked with sodium alginate. CUR/EMO NE@SA had a pH-responsive property and could achieve controlled drug release in the colon. The preparation could significantly alleviate and improve the colon inflammatory microenvironment by decreasing TNF-α and IL-6 expression, increasing IL-10 expression, scavenging reactive oxygen species in macrophages, and by ameliorating the restoration of intestinal mucosal tight junction protein expression. Furthermore, we revealed the molecular mechanism of the preparation for IBD treatment, which might due to the CUR and EMO synergic inhibition of NF-κB to improve the pro-inflammatory microenvironment. Our study provides a new IBD therapy strategy via synergically inhibiting inflammatory, repairing mucosal and clearing ROS by pH-sensitive hydrogel-encapsulated nanoemulsion drug delivery system, which might be developed for other chronic inflammatory disease treatment. CONCLUSIONS It's suggested that pH-sensitive hydrogel-coated nanoemulsion-based codelivery systems are a promising combinatorial platform in IBD.
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Affiliation(s)
- Fenting Lei
- Analysis and Testing Center, School of Pharmacy, Southwest Medical University, 1-1 Xianglin Road, Luzhou, 646000, Sichuan, People's Republic of China
| | - Fancai Zeng
- Laboratory of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Southwest Medical University, Luzhou, 646000, China
| | - Xin Yu
- Chinese Pharmacy Laboratory, School of Pharmacy, Southwest Medical University, Luzhou, Sichuan, China
| | - Yiping Deng
- Analysis and Testing Center, School of Pharmacy, Southwest Medical University, 1-1 Xianglin Road, Luzhou, 646000, Sichuan, People's Republic of China
| | - Zongquan Zhang
- Department of Pharmaceutical Sciences, School of Pharmacy, Southwest Medical University, 1-1 Xianglin Road, Luzhou, 646000, Sichuan, People's Republic of China
| | - Maochang Xu
- Department of Pharmaceutical Sciences, School of Pharmacy, Southwest Medical University, 1-1 Xianglin Road, Luzhou, 646000, Sichuan, People's Republic of China
| | - Nianhui Ding
- School of Pharmacy, Southwest Medical University, Luzhou, 646000, China
| | - Ji Tian
- Analysis and Testing Center, School of Pharmacy, Southwest Medical University, 1-1 Xianglin Road, Luzhou, 646000, Sichuan, People's Republic of China.
| | - Chunhong Li
- Department of Pharmaceutical Sciences, School of Pharmacy, Southwest Medical University, 1-1 Xianglin Road, Luzhou, 646000, Sichuan, People's Republic of China.
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