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Uddin J, Oltman CG, Lo JHJ, Gupta MK, Werfel TA, Mohyuddin M, Nazmin F, Rahman S, Crews BC, Kingsley PJ, Marnett LJ, Duvall CL, Cook RS. Polymeric Micellar Nanoparticles Enable Image-guided Drug Delivery in Solid Tumors. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.07.598019. [PMID: 38915607 PMCID: PMC11195104 DOI: 10.1101/2024.06.07.598019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
We report the development of a nanotechnology to co-deliver chemocoxib A with a reactive oxygen species (ROS)-activatable and COX-2 targeted pro-fluorescent probe, fluorocoxib Q (FQ) enabling real time visualization of COX-2 and CA drug delivery into solid cancers, using a di-block PPS 135 - b -POEGA 17 copolymer, selected for its intrinsic responsiveness to elevated reactive oxygen species (ROS), a key trait of the tumor microenvironment. FQ and CA were synthesized independently, then co-encapsulated within micellar PPS 135 - b -POEGA 17 co-polymeric nanoparticles (FQ-CA-NPs), and were assessed for cargo concentration, hydrodynamic diameter, zeta potential, and ROS-dependent cargo release. The uptake of FQ-CA-NPs in mouse mammary cancer cells and cargo release was assessed by fluorescence microscopy. Intravenous delivery of FQ-CA-NPs to mice harboring orthotopic mammary tumors, followed by vital optimal imaging, was used to assess delivery to tumors in vivo . The CA-FQ-NPs exhibited a hydrodynamic diameter of 109.2 ± 4.1 nm and a zeta potential (σ) of -1.59 ± 0.3 mV. Fluorescence microscopy showed ROS-dependent cargo release by FQ-CA-NPs in 4T1 cells, decreasing growth of 4T1 breast cancer cells, but not affecting growth of primary human mammary epithelial cells (HMECs). NP-derived fluorescence was detected in mammary tumors, but not in healthy organs. Tumor LC-MS/MS analysis identified both CA (2.38 nmol/g tumor tissue) and FQ (0.115 nmol/g tumor tissue), confirming the FQ-mediated image guidance of CA delivery in solid tumors. Thus, co-encapsulation of FQ and CA into micellar nanoparticles (FQ-CA-NPs) enabled ROS-sensitive drug release and COX-2-targeted visualization of solid tumors.
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Heo CH, Roh EJ, Kim J, Choi H, Jang HY, Lee G, Lim CS, Han I. Development of a COX-2-Selective Fluorescent Probe for the Observation of Early Intervertebral Disc Degeneration. J Funct Biomater 2023; 14:jfb14040192. [PMID: 37103282 PMCID: PMC10146728 DOI: 10.3390/jfb14040192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 02/17/2023] [Accepted: 02/20/2023] [Indexed: 04/03/2023] Open
Abstract
Cyclooxygenase-2 (COX-2) is a biomolecule known to be overexpressed in inflammation. Therefore, it has been considered a diagnostically useful marker in numerous studies. In this study, we attempted to assess the correlation between COX-2 expression and the severity of intervertebral disc (IVD) degeneration using a COX-2-targeting fluorescent molecular compound that had not been extensively studied. This compound, indomethacin-adopted benzothiazole-pyranocarbazole (IBPC1), was synthesized by introducing indomethacin—a compound with known selectivity for COX-2—into a phosphor with a benzothiazole-pyranocarbazole structure. IBPC1 exhibited relatively high fluorescence intensity in cells pretreated with lipopolysaccharide, which induces inflammation. Furthermore, we observed significantly higher fluorescence in tissues with artificially damaged discs (modeling IVD degeneration) compared to normal disc tissues. These findings indicate that IBPC1 can meaningfully contribute to the study of the mechanism of IVD degeneration in living cells and tissues and to the development of therapeutic agents.
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Affiliation(s)
- Cheol Ho Heo
- Department of Applied Chemistry, Kookmin University, Seoul 02707, Republic of Korea
- Pure Chem Co., Ltd., Knu Start-up CUBE, Chunchenon 24341, Republic of Korea
| | - Eun Ji Roh
- Department of Neurosurgery, CHA University School of Medicine, CHA Bundang Medical Center, Seongnam-si 13496, Republic of Korea
- Department of Biomedical Science, CHA University School of Medicine, CHA Bundang Medical Center, Seongnam-si 13496, Republic of Korea
| | - Jaehee Kim
- Pure Chem Co., Ltd., Knu Start-up CUBE, Chunchenon 24341, Republic of Korea
| | - Hyemin Choi
- Department of Neurosurgery, CHA University School of Medicine, CHA Bundang Medical Center, Seongnam-si 13496, Republic of Korea
| | - Ho Yeon Jang
- Department of Applied Chemistry, Kookmin University, Seoul 02707, Republic of Korea
| | - Giseong Lee
- Pure Chem Co., Ltd., Knu Start-up CUBE, Chunchenon 24341, Republic of Korea
- College of General Education, Kookmin University, Seoul 02707, Republic of Korea
- Correspondence: (G.L.); (C.S.L.); (I.H.)
| | - Chang Su Lim
- Department of Neurosurgery, CHA University School of Medicine, CHA Bundang Medical Center, Seongnam-si 13496, Republic of Korea
- Correspondence: (G.L.); (C.S.L.); (I.H.)
| | - Inbo Han
- Department of Neurosurgery, CHA University School of Medicine, CHA Bundang Medical Center, Seongnam-si 13496, Republic of Korea
- Correspondence: (G.L.); (C.S.L.); (I.H.)
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Yao L, Yin C, Huo F. Small-Molecule Fluorescent Probes for Detecting Several Abnormally Expressed Substances in Tumors. MICROMACHINES 2022; 13:1328. [PMID: 36014250 PMCID: PMC9412406 DOI: 10.3390/mi13081328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/04/2022] [Accepted: 08/12/2022] [Indexed: 06/15/2023]
Abstract
Malignant tumors have always been the biggest problem facing human survival, and a huge number of people die from cancer every year. Therefore, the identification and detection of malignant tumors have far-reaching significance for human survival and development. Some substances are abnormally expressed in tumors, such as cyclooxygenase-2 (COX-2), nitroreductase (NTR), pH, biothiols (GSH, Cys, Hcy), hydrogen sulfide (H2S), hydrogen sulfide (H2O2), hypochlorous acid (HOCl) and NADH. Consequently, it is of great value to diagnose and treat malignant tumors due to the identification and detection of these substances. Compared with traditional tumor detection methods, fluorescence imaging technology has the advantages of an inexpensive cost, fast detection and high sensitivity. Herein, we mainly introduce the research progress of fluorescent probes for identifying and detecting abnormally expressed substances in several tumors.
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Affiliation(s)
- Leilei Yao
- Research Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, China
| | - Caixia Yin
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Molecular Science, Shanxi University, Taiyuan 030006, China
| | - Fangjun Huo
- Research Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, China
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