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Tang BJH, Li H, Yuan C, Parigi G, Luchinat C, Meade TJ. Molecular Engineering of Self-Immolative Bioresponsive MR Probes. J Am Chem Soc 2023; 145:10045-10050. [PMID: 37116079 PMCID: PMC10769484 DOI: 10.1021/jacs.2c13672] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Abstract
Real-time detection of bio-event in whole animals provides essential information for understanding biological and therapeutic processes. Magnetic resonance (MR) imaging represents a non-invasive approach to generating three-dimensional anatomic images with high spatial-temporal resolution and unlimited depth penetration. We have developed several self-immolative enzyme-activatable agents that provide excellent in vivo contrast and function as gene expression reporters. Here, we describe a vast improvement in image contrast over our previous generations of these bioresponsive agents based on a new pyridyl-carbamate Gd(III) complex. The pyridyl-carbamate-based agent has a very low MR relaxivity in the "off-state" (r1 = 1.8 mM-1 s-1 at 1.41 T). However, upon enzymatic processing, it generates a significantly higher relaxivity with a Δr1 = 106% versus Δr1 ∼ 20% reported previously. Single X-ray crystal and nuclear magnetic relaxation dispersion analyses offer mechanistic insights regarding MR signal enhancement at the molecular scale. This work demonstrates a pyridyl-carbamate-based self-immolative molecular platform for the construction of enzymatic bio-responsive MR agents, which can be adapted to a wide range of other targets for exploring stimuli-responsive materials and biomedical applications.
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Affiliation(s)
- bJian-Hong Tang
- Departments of Chemistry; Molecular Biosciences; Neurobiology and Physiology; and Radiology, Northwestern University, Evanston, IL 60208
| | - Hao Li
- Departments of Chemistry; Molecular Biosciences; Neurobiology and Physiology; and Radiology, Northwestern University, Evanston, IL 60208
| | - Chaonan Yuan
- Departments of Chemistry; Molecular Biosciences; Neurobiology and Physiology; and Radiology, Northwestern University, Evanston, IL 60208
| | - Giacomo Parigi
- Department of Chemistry and Magnetic Resonance Center (CERM), University of Florence, and Consorzio Interuniversitario Risonanze Magnetiche Metallo Proteine (CIRMMP), Via L. Sacconi 6, 50019 Sesto Fiorentino, Italy
| | - Claudio Luchinat
- Department of Chemistry and Magnetic Resonance Center (CERM), University of Florence, and Consorzio Interuniversitario Risonanze Magnetiche Metallo Proteine (CIRMMP), Via L. Sacconi 6, 50019 Sesto Fiorentino, Italy
| | - Thomas J. Meade
- Departments of Chemistry; Molecular Biosciences; Neurobiology and Physiology; and Radiology, Northwestern University, Evanston, IL 60208
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Chen S, Liu M, Zi Y, He J, Wang L, Wu Y, Hou S, Wu W. Rational design of near-infrared ratiometric fluorescent probes for real-time tracking of β-galactosidase in vivo. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 285:121879. [PMID: 36122464 DOI: 10.1016/j.saa.2022.121879] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 08/18/2022] [Accepted: 09/10/2022] [Indexed: 06/15/2023]
Abstract
β-Galactosidase (β-gal) is a hydrolytic enzyme in lysosomes and is also an important biomarker of cellular senescence and primary ovarian cancer. Therefore, real-time non-invasive detection of β-gal activity in vivo is of great significance for the prevention of cell senescence and early diagnosis of ovarian cancer. We designed an enzyme-activated proportional near-infrared (NIR) probe (Gal-Br-NO2) for real-time fluorescence quantification and capture of β-gal activity in vivo. The main characteristics of the Gal-Br-NO2 probe include short response time (less than 10 min), large Stokes displacement (155 nm), and near-infrared fluorescence emission (670 nm). The probe has also been successfully used to detect β-gal in ovarian cancer cells and senile cells and can accurately detect endogenous β-gal in zebrafish. Our work provides a potential tool for pre-clinical real-time tracking of β-gal activity in vivo and early diagnosis of disease.
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Affiliation(s)
- Shijun Chen
- College of Science, China Agricultural University, Beijing 100193, PR China
| | - Mengyao Liu
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, PR China
| | - Yunjiang Zi
- College of Science, China Agricultural University, Beijing 100193, PR China
| | - Junyi He
- College of Science, China Agricultural University, Beijing 100193, PR China
| | - Lin Wang
- College of Science, China Agricultural University, Beijing 100193, PR China
| | - Yuanyuan Wu
- College of Science, China Agricultural University, Beijing 100193, PR China
| | - Shicong Hou
- College of Science, China Agricultural University, Beijing 100193, PR China.
| | - Wenxue Wu
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, PR China.
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Chen S, Niu K, Wang L, Wu Y, Hou S, Ma X. Near-infrared fluorescent probe with a large Stokes shift for bioimaging of β-galactosidase in living cells and zebrafish develop at different period. Anal Chim Acta 2022; 1232:340459. [DOI: 10.1016/j.aca.2022.340459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Accepted: 09/27/2022] [Indexed: 11/01/2022]
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Li Y, Liu F, Zhu D, Zhu T, Zhang Y, Li Y, Luo J, Kong L. A new near-infrared excitation/emission fluorescent probe for the detection of β-galactosidase in living cells and in vivo. Talanta 2022; 237:122952. [PMID: 34736678 DOI: 10.1016/j.talanta.2021.122952] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 10/04/2021] [Accepted: 10/08/2021] [Indexed: 01/09/2023]
Abstract
Development of noninvasive bioimaging fluorescent probes for detecting particular enzyme activity is greatly recommendable for preclinical diagnosis of cancer. Given that the elevated β-gal activity is positively correlated with several tumors, developing a fluorescent probe for the sensing of β-gal is therefore highly desirable for cancer diagnosis. Herein, a new enzyme-activatable near-infrared (NIR) turn-on fluorescent probe (DMC-βgal) was developed for accurately detecting β-gal activity characterized by excellent selectivity, high sensitivity (LOD = 0.298 U/L), and low toxicity. More importantly, DMC-βgal qualifies remarkable NIR excitation (725 nm) and emission wavelength (770 nm), an ideal tool for restrained photodamage and suppressed autofluorescence. The above excellent performance of DMC-β-gal allowed for the accurate monitoring of endogenous β-gal in living cells. Moreover, the probe was successfully applied to detect intracellular β-gal activity in different types of cancer cells, verifying that SKOV-3 cells had a higher level of β-gal activity than those of A549, HCT-116, MCF-7, and HepG2 cells. Furthermore, DMC-βgal could real-time visualize endogenously β-gal in tumor-bearing nude mice with low auto-fluorescence interference. All results fully demonstrated that DMC-βgal has potential value as a promising strategy for diagnosis of β-gal-related diseases.
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Affiliation(s)
- Yin Li
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Bioactive Natural Product Research, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, PR China
| | - Feiyan Liu
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Bioactive Natural Product Research, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, PR China
| | - Dongrong Zhu
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Bioactive Natural Product Research, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, PR China
| | - Tianyu Zhu
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Bioactive Natural Product Research, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, PR China
| | - Yuxin Zhang
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Bioactive Natural Product Research, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, PR China
| | - Yalin Li
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Bioactive Natural Product Research, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, PR China
| | - Jianguang Luo
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Bioactive Natural Product Research, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, PR China.
| | - Lingyi Kong
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Bioactive Natural Product Research, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, PR China.
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Gao T, Li H, Wu Y, Deng C, Xie Y, Wang J, Yang Y, Lv Q, Jin Q, Chen Y, Yi L, Zhong Y, Li X, Zhao Q, Zhang L, Xie M. First aggregation-induced emission-active probe for species-specific detection of β-galactosidase. Talanta 2021; 235:122659. [PMID: 34517575 DOI: 10.1016/j.talanta.2021.122659] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 06/22/2021] [Accepted: 06/24/2021] [Indexed: 11/29/2022]
Abstract
Sensitive detection of β-galactosidase (β-gal) is of great significance for early diagnosis of ovarian cancer. Fluorescent probes for detecting β-gal have received great interest due to the non-invasiveness, excellent sensitivity, high temporal, and superior spatial resolution. However, most reported fluorescent sensors for β-gal suffer from aggregation caused quenching effect when accumulated, and cannot discriminate β-gal from other species, especially, Escherichia coliβ-gal. Herein, we report the first aggregation-induced emission (AIE)-active fluorescent probe HBTTPAG, which achieves species-selective detection of β-gal. Probe HBTTPAG can discriminate Aspergillus oryzae β-gal from Escherichia coliβ-gal, with high sensitivity (detection limit of 3.7 × 10-3 UmL-1), superior selectivity and low cytotoxicity. Furthermore, HBTTPAG is utilized to visualize endogenous β-gal in lysosomes of SKOV-3 cells, as well as to detect β-gal activity in ovarian cancer tissues. Notably, owing to the AIE-active, HBTTPAG realizes long-term (12 h) tracking β-gal in ovarian cancer cells. This work provides a promising method for species-selective detection of β-gal in preclinical.
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Affiliation(s)
- Tang Gao
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China; Hubei Province Clinical Research Center for Medical Imaging, Wuhan, 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, 430022, China
| | - Huiling Li
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China; Hubei Province Clinical Research Center for Medical Imaging, Wuhan, 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, 430022, China
| | - Ya Wu
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China; Hubei Province Clinical Research Center for Medical Imaging, Wuhan, 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, 430022, China
| | - Cheng Deng
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China; Hubei Province Clinical Research Center for Medical Imaging, Wuhan, 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, 430022, China
| | - Yuji Xie
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China; Hubei Province Clinical Research Center for Medical Imaging, Wuhan, 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, 430022, China
| | - Jing Wang
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China; Hubei Province Clinical Research Center for Medical Imaging, Wuhan, 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, 430022, China
| | - Yali Yang
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China; Hubei Province Clinical Research Center for Medical Imaging, Wuhan, 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, 430022, China
| | - Qin Lv
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China; Hubei Province Clinical Research Center for Medical Imaging, Wuhan, 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, 430022, China
| | - Qiaofeng Jin
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China; Hubei Province Clinical Research Center for Medical Imaging, Wuhan, 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, 430022, China
| | - Yihan Chen
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China; Hubei Province Clinical Research Center for Medical Imaging, Wuhan, 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, 430022, China
| | - Luyang Yi
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China; Hubei Province Clinical Research Center for Medical Imaging, Wuhan, 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, 430022, China
| | - Yi Zhong
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China; Hubei Province Clinical Research Center for Medical Imaging, Wuhan, 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, 430022, China
| | - Xueke Li
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China; Hubei Province Clinical Research Center for Medical Imaging, Wuhan, 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, 430022, China
| | - Qianqian Zhao
- Institute for Advanced Simulations (IAS)-5/Institute for Neuroscience and Medicine (INM)-9, Forschungszentrum Jülich, 52428, Jülich, Germany
| | - Li Zhang
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China; Hubei Province Clinical Research Center for Medical Imaging, Wuhan, 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, 430022, China.
| | - Mingxing Xie
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China; Hubei Province Clinical Research Center for Medical Imaging, Wuhan, 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan, 430022, China.
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Yao Y, Zhang Y, Yan C, Zhu WH, Guo Z. Enzyme-activatable fluorescent probes for β-galactosidase: from design to biological applications. Chem Sci 2021; 12:9885-9894. [PMID: 34349961 PMCID: PMC8317648 DOI: 10.1039/d1sc02069b] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 06/27/2021] [Indexed: 12/15/2022] Open
Abstract
β-Galactosidase (β-gal), a typical hydrolytic enzyme, is a vital biomarker for cell senescence and primary ovarian cancers. Developing precise and rapid methods to monitor β-gal activity is crucial for early cancer diagnoses and biological research. Over the past decade, activatable optical probes have become a powerful tool for real-time tracking and in vivo visualization with high sensitivity and specificity. In this review, we summarize the latest advances in the design of β-gal-activatable probes via spectral characteristics and responsiveness regulation for biological applications, and particularly focus on the molecular design strategy from turn-on mode to ratiometric mode, from aggregation-caused quenching (ACQ) probes to aggregation-induced emission (AIE)-active probes, from near-infrared-I (NIR-I) imaging to NIR-II imaging, and from one-mode to dual-mode of chemo-fluoro-luminescence sensing β-gal activity.
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Affiliation(s)
- Yongkang Yao
- Key Laboratory for Advanced Materials, Institute of Fine Chemicals, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology Shanghai 200237 China
| | - Yutao Zhang
- Key Laboratory for Advanced Materials, Institute of Fine Chemicals, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology Shanghai 200237 China
| | - Chenxu Yan
- Key Laboratory for Advanced Materials, Institute of Fine Chemicals, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology Shanghai 200237 China
| | - Wei-Hong Zhu
- Key Laboratory for Advanced Materials, Institute of Fine Chemicals, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology Shanghai 200237 China
| | - Zhiqian Guo
- Key Laboratory for Advanced Materials, Institute of Fine Chemicals, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology Shanghai 200237 China
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Pang X, Li Y, Zhou Z, Lu Q, Xie R, Wu C, Zhang Y, Li H. Visualization of endogenous β-galactosidase activity in living cells and zebrafish with a turn-on near-infrared fluorescent probe. Talanta 2020; 217:121098. [PMID: 32498839 DOI: 10.1016/j.talanta.2020.121098] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 04/23/2020] [Accepted: 04/27/2020] [Indexed: 01/29/2023]
Abstract
β-Galactosidase (β-gal) is an important biomarker for primary ovarian cancers. Developing noninvasive bioimaging probes for studying the activity of β-gal is highly desirable for cancer diagnosis. Herein, a turn-on near-infrared (NIR) fluorescent probe, 2-((6-(((2S, 3R, 4S, 5R, 6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran -2-yl)oxy)-2,3-dihydro-1H-xanthen-4-yl)methylene)malononitrile named DXM-βgal, was rationally designed based on enzymatic reaction for the detection of β-gal activity both in vitro and in vivo. Upon incubating with β-gal, DXM-βgal displayed a significant fluorescence enhancement at 640 nm, accompanying by a color change of solution color from red to purple. DXM-βgal exhibited high selectivity and sensitively to β-gal with low limit of detection (2.92 × 10-4 U mL-1). Besides, based on its advantages of long-wavelength emission and excellent biocompatibility, DXM-βgal was successfully applied to imaging β-gal in living cells and zebrafish. Given these prominent properties, we believe that DXM-βgal will be a potential tool for investigating β-gal activity in biomedical research.
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Affiliation(s)
- Xiao Pang
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, PR China
| | - Yaqian Li
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, PR China
| | - Zile Zhou
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, PR China
| | - Qiujun Lu
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, PR China
| | - Ruihua Xie
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, PR China
| | - Cuiyan Wu
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, PR China.
| | - Youyu Zhang
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, PR China
| | - Haitao Li
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry of Education), College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, PR China.
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Yang L, Yan J, Zhang JA, Zhou XH, Fang C, Zeng EM, Tang B, Duan J, Lu GH, Hong T. The important role of connexin 43 in subarachnoid hemorrhage-induced cerebral vasospasm. J Transl Med 2019; 17:433. [PMID: 31888653 PMCID: PMC6936071 DOI: 10.1186/s12967-019-02190-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 12/23/2019] [Indexed: 12/23/2022] Open
Abstract
Background Gap junctions are involved in the development of cerebral vasospasm (CVS) after subarachnoid hemorrhage (SAH). However, the specific roles and regulatory functions of related connexin isoforms remain unknown. The aim of this study was to investigate the importance of connexin 43 (Cx43) in CVS and determine whether Cx43 alterations are modulated via the protein kinase C (PKC) signaling transduction pathway. Methods Oxyhemoglobin (OxyHb)-induced smooth muscle cells of basilar arterial and second-injection model in rat were used as CVS models in vitro and in vivo. In addition, dye transfer assays were used for gap junction-mediated intercellular communication (GJIC) observation in vitro and delayed cerebral ischemia (DCI) was observed in vivo by perfusion-weighted imaging (PWI) and intravital fluorescence microscopy. Results Increase in Cx43 mediated the development of SAH-induced CVS was found in both in vitro and in vivo CVS models. Enhanced GJIC was observed in vitro CVS model, this effect and increased Cx43 were reversed by preincubation with specific PKC inhibitors (chelerythrine or GF 109203X). DCI was observed in vivo on day 7 after SAH. However, DCI was attenuated by pretreatment with Cx43 siRNA or PKC inhibitors, and the increased Cx43 expression in vivo was also reversed by Cx43 siRNA or PKC inhibitors. Conclusions These data provide strong evidence that Cx43 plays an important role in CVS and indicate that changes in Cx43 expression may be mediated by the PKC pathway. The current findings suggest that Cx43 and the PKC pathway are novel targets for developing treatments for SAH-induced CVS.
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Affiliation(s)
- Le Yang
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, 17 Yong Wai Zheng Street, Nanchang, China
| | - Jian Yan
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, 17 Yong Wai Zheng Street, Nanchang, China
| | - Jin-An Zhang
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, 17 Yong Wai Zheng Street, Nanchang, China
| | - Xin-Hui Zhou
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, 17 Yong Wai Zheng Street, Nanchang, China
| | - Chao Fang
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, 17 Yong Wai Zheng Street, Nanchang, China
| | - Er-Ming Zeng
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, 17 Yong Wai Zheng Street, Nanchang, China
| | - Bin Tang
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, 17 Yong Wai Zheng Street, Nanchang, China
| | - Jian Duan
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, 17 Yong Wai Zheng Street, Nanchang, China
| | - Guo-Hui Lu
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, 17 Yong Wai Zheng Street, Nanchang, China
| | - Tao Hong
- Department of Neurosurgery, The First Affiliated Hospital of Nanchang University, 17 Yong Wai Zheng Street, Nanchang, China.
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Zhang J, Cheng P, Pu K. Recent Advances of Molecular Optical Probes in Imaging of β-Galactosidase. Bioconjug Chem 2019; 30:2089-2101. [PMID: 31269795 DOI: 10.1021/acs.bioconjchem.9b00391] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
β-Galactosidase (β-Gal), as a lysosomal hydrolytic enzyme, plays an important physiological role in catalyzing the hydrolysis of glycosidic bonds which convert lactose into galactose. Moreover, upregulation of β-Gal is often correlated with the occurrence of primary ovarian cancers and cell senescence. Thereby, detection of β-Gal activity is relevant to cancer diagnosis. Optical imaging possesses high spatial and temporal resolution, high sensitivity, and real-time imaging capability. These properties are beneficial for the detection of β-Gal in living systems. This Review summarizes the recent progress in development of molecular optical probes for near-infrared fluorescence (NIRF), bioluminescence (BL), chemiluminescence (CL), or photoacoustic (PA) imaging of β-Gal in biological systems. The challenges and opportunities in the probe design for detection of β-Gal are also discussed.
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Affiliation(s)
- Jianjian Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Modern Separation Science Key Laboratory of Shaanxi Province, College of Chemistry & Materials Science , Northwest University , 710127 , Xi'an , China.,School of Chemical and Biomedical Engineering , Nanyang Technological University , 70 Nanyang Drive , 637457 , Singapore
| | - Penghui Cheng
- School of Chemical and Biomedical Engineering , Nanyang Technological University , 70 Nanyang Drive , 637457 , Singapore
| | - Kanyi Pu
- School of Chemical and Biomedical Engineering , Nanyang Technological University , 70 Nanyang Drive , 637457 , Singapore
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High-efficiency generation of induced pluripotent mesenchymal stem cells from human dermal fibroblasts using recombinant proteins. Stem Cell Res Ther 2016; 7:99. [PMID: 27473118 PMCID: PMC4967313 DOI: 10.1186/s13287-016-0358-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 06/13/2016] [Accepted: 06/29/2016] [Indexed: 01/04/2023] Open
Abstract
Background Induced pluripotent mesenchymal stem cells (iPMSCs) are novel candidates for drug screening, regenerative medicine, and cell therapy. However, introduction of transcription factor encoding genes for induced pluripotent stem cell (iPSC) generation which could be used to generate mesenchymal stem cells is accompanied by the risk of insertional mutations in the target cell genome. Methods We demonstrate a novel method using an inactivated viral particle to package and deliver four purified recombinant Yamanaka transcription factors (Sox2, Oct4, Klf4, and c-Myc) resulting in reprogramming of human primary fibroblasts. Whole genome bisulfite sequencing was used to analyze genome-wide CpG methylation of human iPMSCs. Western blot, quantitative PCR, immunofluorescence, and in-vitro differentiation were used to assess the pluripotency of iPMSCs. Results The resulting reprogrammed fibroblasts show high-level expression of stem cell markers. The human fibroblast-derived iPMSC genome showed gains in DNA methylation in low to medium methylated regions and concurrent loss of methylation in previously hypermethylated regions. Most of the differentially methylated regions are close to transcription start sites and many of these genes are pluripotent pathway associated. We found that DNA methylation of these genes is regulated by the four iPSC transcription factors, which functions as an epigenetic switch during somatic reprogramming as reported previously. These iPMSCs successfully differentiate into three embryonic germ layer cells, both in vitro and in vivo. Following multipotency induction in our study, the delivered transcription factors were degraded, leading to an improved efficiency of subsequent programmed differentiation. Conclusion Recombinant transcription factor based reprogramming and derivatization of iPMSC offers a novel high-efficiency approach for regenerative medicine from patient-derived cells. Electronic supplementary material The online version of this article (doi:10.1186/s13287-016-0358-4) contains supplementary material, which is available to authorized users.
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Tskitishvili E, Nakamura H, Kinugasa-Taniguchi Y, Kanagawa T, Shimoya K, Tomimatsu T, Kimura T. The effect of tumor-associated protein RCAS1 gene silencing on blood pressure and urinary protein excretion in pregnant mouse: a pilot study. Am J Obstet Gynecol 2010; 203:364.e6-364.e12. [PMID: 20579953 DOI: 10.1016/j.ajog.2010.05.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2010] [Revised: 04/14/2010] [Accepted: 05/01/2010] [Indexed: 12/24/2022]
Abstract
OBJECTIVE The level of tumor-associated receptor-binding cancer antigen that is expressed on SiSo cells (RCAS1) is decreased significantly in preeclamptic pregnancies. We hypothesized that RCAS1 protein gene silencing might affect blood pressure and proteinuria in pregnant mice. STUDY DESIGN On postcoital day 7.5, pregnant imprinting control region mice were subjected to the transfer of small interfering RNA (siRNA) against RCAS1 protein into the uterine cavity with the use of a hemagglutinating virus Japan envelope. Scramble siRNA was used as a negative control. Blood pressure and urine albumin/creatinine measurements were performed. The effect of the transferred siRNA was examined in uterine samples on postcoital day 8.5 with the use of Western blotting and immunohistochemistry analyses. RESULTS In the RCAS1 siRNA group, blood pressure significantly raised on postcoital days 9.5, 10.5, 11.5, and 15.5, whereas urine albumin/creatinine ratio was significantly increased on postcoital day 9.5 CONCLUSION Our results suggest the importance of RCAS1 protein in the pathophysiologic condition of preeclampsia.
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Affiliation(s)
- Ekaterine Tskitishvili
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Suita City, Osaka, Japan.
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Zhang Q, Li Y, Shi Y, Zhang Y. HVJ envelope vector, a versatile delivery system: its development, application, and perspectives. Biochem Biophys Res Commun 2008; 373:345-9. [PMID: 18588856 DOI: 10.1016/j.bbrc.2008.06.055] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2008] [Accepted: 06/13/2008] [Indexed: 12/31/2022]
Abstract
An efficient and minimally invasive vector system is the "bottle neck" of both gene transfer and drug delivery. Numerous viral and non-viral (synthetic) delivery systems have been developed and improved. Hemagglutinating virus of Japan (HVJ, Sendai virus) envelope vector is a novel and unique system which combined the advantages of viral and non-viral vectors with the following features and advantages: (1) safe and easy as a "non-viral" transfection reagent; (2) delivery of various molecules including plasmid DNA, siRNA, protein, antisense oligonucleotide; (3) wide usability from in vitro to in vivo. In this review, the development, application, and perspectives of the HVJ envelope vector will be discussed.
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Affiliation(s)
- Qingxian Zhang
- Department of Nephrology, Third Hospital, Hebei Medical University, No. 139 Ziqiang Road, Shijiazhuang 050051, PR China
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