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Khatri S, Hansen J, Mendes AC, Chronakis IS, Hung SC, Mellins ED, Astakhova K. Citrullinated Peptide Epitope Targets Therapeutic Nanoparticles to Human Neutrophils. Bioconjug Chem 2019; 30:2584-2593. [PMID: 31524379 DOI: 10.1021/acs.bioconjchem.9b00518] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Multiple drugs have been proposed for reducing harsh symptoms of human rheumatic diseases. However, a targeted therapy with mild to no side effects is still missing. In this study, we have prepared and tested a series of therapeutic nanoparticles for specific targeting of human neutrophils associated with rheumatoid arthritis. In doing this, a series of citrullinated peptide epitopes derived from human proteins, fibrinogen, vimentin, and histone 3, were screened with regard to specific recognition of neutrophils. The most potent epitope proved to be a mutated fragment of an alpha chain in human fibrinogen. Next, a straightforward synthetic strategy was developed for nanoparticles decorated with this citrullinated peptide epitope and an antisense oligonucleotide targeting disease associated microRNA miR-125b-5p. Our study shows that the nanoparticles specifically recognize neutrophils and knock down miR-125b-5p, with no apparent toxicity to human cells. In contrast to organic dendrimers, chitosan-hyaluronic acid formulations do not activate human innate immune response. Our data proves that the strategy we report herein is effective in developing peptide epitopes for decorating delivery vehicles bearing biological drugs, targeted to a specific cell type.
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Affiliation(s)
- Sangita Khatri
- Department of Chemistry , Technical University of Denmark , Kongens Lyngby , Region Hovedstaden 2800 , Denmark
| | - Jonas Hansen
- Department of Chemistry , Technical University of Denmark , Kongens Lyngby , Region Hovedstaden 2800 , Denmark.,Institute of Molecular Medicine , Sechenov First Moscow State Medical University , Moscow 119991 , Russia
| | - Ana C Mendes
- DTU Food , Technical University of Denmark , Kongens Lyngby , Region Hovedstaden 2800 , Denmark
| | - Ioannis S Chronakis
- DTU Food , Technical University of Denmark , Kongens Lyngby , Region Hovedstaden 2800 , Denmark
| | - Shu-Chen Hung
- Department of Pediatrics, Program in Immunology , Stanford University School of Medicine , Stanford , California 94305 , United States of America
| | - Elizabeth D Mellins
- Department of Pediatrics, Program in Immunology , Stanford University School of Medicine , Stanford , California 94305 , United States of America
| | - Kira Astakhova
- Department of Chemistry , Technical University of Denmark , Kongens Lyngby , Region Hovedstaden 2800 , Denmark
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Wan Y, Xu L, Zhuo N, Lu X. A novel DNA sensor based on C 60NPs-PAMAM-PtPNPs to detect VKORC1 gene for guiding rational clinical therapy with warfarin. Anal Chim Acta 2018; 1009:39-47. [PMID: 29422130 DOI: 10.1016/j.aca.2018.01.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2017] [Revised: 12/24/2017] [Accepted: 01/10/2018] [Indexed: 12/31/2022]
Abstract
Reports have indicated that warfarin is the most widely prescribed anticoagulant. However, traditionally prescribed doses for each patient may be too low or too high. The therapeutic effect is often hindered by a lack of evidence-based medical information. Herein, our aim is to provide this information. To accomplish this challenge, we report the development of a novel assay based on biotinylated tetrahedral DNA as a capture probe and fullerene (C60)-based nanomaterial as a redox probe using an ultrasensitivity assay with the Vitamin K epoxide reductase complex, subunit 1 (VKORC1). Platinum porous nanoparticles (PtPNPs) were modified on amino-terminated polyamidoamine (PAMAM)-functionalized C60 nanoparticles (C60NPs). The resultant C60NPs-PAMAM-PtPNPs were used as a redox probe. In this design, C60 exhibited excellent redox activity that was triggered by tetraoctylammonium bromide (TOAB). To improve the immobilization of the tetrahedral DNA capture probe, avidin was introduced during the fabrication of the biosensor because it can provide more active sites for the immobilization capture probe. The free-standing probe on top of the tetrahedral DNA served as a receptor to hybridize with target DNA directly. Different pulse voltammetry (DPV) was applied to record the electrochemical signals, which increased linearly with the target DNA. Under optimal conditions, the prepared biosensor showed a wide linear relationship, from 1 pM to 10 nM, with detection limits of 0.33 pM. This strategy demonstrates a new avenue for the determination of tumour-related mutated nucleotides in biosamples.
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Affiliation(s)
- Yongxian Wan
- Department of Orthopedics, Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Lili Xu
- Department of Rehabilitation Medicine, Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Naiqiang Zhuo
- Department of Orthopedics, Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Xiaobo Lu
- Department of Orthopedics, Affiliated Hospital of Southwest Medical University, Luzhou, China
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