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Huang J, Lin C, Fang J, Li X, Wang J, Deng S, Zhang S, Su W, Feng X, Chen B, Cheng D, Shuai X. pH-Sensitive Nanocarrier-Mediated Codelivery of Simvastatin and Noggin siRNA for Synergistic Enhancement of Osteogenesis. ACS Appl Mater Interfaces 2018; 10:28471-28482. [PMID: 30067011 DOI: 10.1021/acsami.8b10521] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [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: 06/08/2023]
Abstract
The inexpensive hypolipidemic drug simvastatin (SIM), which promotes bone regeneration by enhancing bone morphogenetic protein 2 (BMP-2) expression, has been regarded as an ideal alternative to BMP-2 therapy. However, SIM has low bioavailability and may induce the upregulation of the BMP-2-antagonistic noggin protein, which greatly limits the osteogenic effect. Here, a pH-sensitive copolymer, monomethoxy-poly(ethylene glycol)- b-branched polyethyleneimine- b-poly( N-( N', N'-diisopropylaminoethyl)- co-benzylamino)aspartamide (mPEG-bPEI-PAsp(DIP-BzA)) (PBP), was synthesized and self-assembled into a cationic micelle. SIM and siRNA targeting the noggin gene (N-siRNA) were loaded into the PAsp(DIP-BzA) core and the cationic bPEI interlayer of the micelle via hydrophobic and electrostatic interactions, respectively. The SIM-loaded micelle effectively delivered SIM into preosteoblast MC3T3-E1 cells and rapidly released it inside the acidic lysosome, resulting in the elevated expression of BMP-2. Meanwhile, the codelivered N-siRNA effectively suppressed the expression of noggin. Consequently, SIM and N-siRNA synergistically increased the BMP-2/noggin ratio and resulted in an obviously higher osteogenetic effect than did simvastatin or N-siRNA alone, both in vitro and in vivo.
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Affiliation(s)
- Jinsheng Huang
- PCFM Lab of Ministry of Education, School of Materials Science and Engineering , Sun Yat-sen University , Guangzhou 510275 , China
| | - Chaowen Lin
- Department of Orthopaedics and Traumatology, Nanfang Hospital , Southern Medical University , Guangzhou 510515 , China
| | - Jintao Fang
- Department of Microsurgery & Orthopedic Trauma , The First Affiliated Hospital of Sun Yat-sen University , Guangzhou 510080 , China
| | - Xiaoxia Li
- PCFM Lab of Ministry of Education, School of Materials Science and Engineering , Sun Yat-sen University , Guangzhou 510275 , China
| | - Jin Wang
- The Third Affiliated Hospital , Sun Yat-sen University , Guangzhou 510630 , China
| | - Shaohui Deng
- PCFM Lab of Ministry of Education, School of Materials Science and Engineering , Sun Yat-sen University , Guangzhou 510275 , China
| | - Sheng Zhang
- Department of Orthopaedics and Traumatology, Nanfang Hospital , Southern Medical University , Guangzhou 510515 , China
| | - Wanhan Su
- Department of Spinal Surgery, Longyan First Hospital , Fujian Medical University , Longyan 364000 , Fujian , China
| | - Xiaoreng Feng
- Department of Orthopaedics and Traumatology, Nanfang Hospital , Southern Medical University , Guangzhou 510515 , China
| | - Bin Chen
- Department of Orthopaedics and Traumatology, Nanfang Hospital , Southern Medical University , Guangzhou 510515 , China
| | - Du Cheng
- PCFM Lab of Ministry of Education, School of Materials Science and Engineering , Sun Yat-sen University , Guangzhou 510275 , China
| | - Xintao Shuai
- PCFM Lab of Ministry of Education, School of Materials Science and Engineering , Sun Yat-sen University , Guangzhou 510275 , China
- The Third Affiliated Hospital , Sun Yat-sen University , Guangzhou 510630 , China
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