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Li X, Yang Y, Wang Z, Ju H, Fu X, Zou L, Li M, Xue Q, Ma H, Meng Y, Zhao L, Qi H, Yu T. Multistage-Responsive Nanocomplexes Attenuate Ulcerative Colitis by Improving the Accumulation and Distribution of Oral Nucleic Acid Drugs in the Colon. ACS Appl Mater Interfaces 2022; 14:2058-2070. [PMID: 34978415 DOI: 10.1021/acsami.1c21595] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Oral gene therapy has emerged as a potential optimal treatment for ulcerative colitis (UC). Nucleic acid drugs possessing versatility can not only inhibit inflammation but realize colon mucosal healing, fulfilling the clinical objective of UC therapy. However, the effective accumulation and distribution of oral nucleic acid drugs in the colon remain a considerable challenge. Furthermore, current delivery systems pay more attention to the accumulation of nucleic acid drugs in the colon, while the distribution of nucleic acid drugs in the colon, which plays a key role in the UC treatment, never catches the attention of researchers. Here, we used miR-320 as a model nucleic acid drug to develop a kind of multistage-responsive nanocomplexes (MSNs) based on polymeric nanocapsules and alginate. MSNs possess the pH responsiveness in the stomach, the enzyme responsiveness in the colonic lumen, and the redox responsiveness in the cytoplasm. In vivo imaging results showed that MSNs reach the colon within 2 h and effectively release miR-320 nanocapsules in the colonic lumen. The nanocapsules can further deliver miR-320 to the submucosal layer and even the muscular layer. Moreover, MSNs decreased the activity of myeloperoxidase and proinflammatory cytokines and exhibited anti-inflammatory activity by inhibiting the phosphorylation of IκBα and AKT, reducing colonic inflammation and enhancing mucosal repair. Therefore, MSNs can successfully alleviate UC by improving the accumulation and distribution of oral nucleic acid drugs in the colon, promoting the clinical translational application of nucleic acid drugs in the treatment of UC.
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Affiliation(s)
- Xiaoxin Li
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao 266021, China
| | - Yanyan Yang
- Department of Immunology, Basic Medicine School, Qingdao University, Qingdao 266021, China
| | - Zhibin Wang
- Department of Cardiac Ultrasound, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Hui Ju
- Department of Gastroenterology, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Xiuxiu Fu
- Department of Cardiac Ultrasound, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Lu Zou
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao 266021, China
| | - Min Li
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao 266021, China
| | - Qianqian Xue
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao 266021, China
| | - Huibo Ma
- Department of Vascular Surgery, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Yuanyuan Meng
- Department of Cardiac Ultrasound, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Liang Zhao
- Department of Cardiac Ultrasound, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Hongzhao Qi
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao 266021, China
| | - Tao Yu
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao 266021, China
- Department of Cardiac Ultrasound, The Affiliated Hospital of Qingdao University, Qingdao 266000, China
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