1
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Zhang S, Shao H, Li KB, Shi W, Han DM. Nanofluidic sensing platform for PNK assay using nonlinear hybridization chain reaction and its application in DNA logic circuit. Biosens Bioelectron 2023; 240:115632. [PMID: 37647684 DOI: 10.1016/j.bios.2023.115632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 08/14/2023] [Accepted: 08/22/2023] [Indexed: 09/01/2023]
Abstract
In this study, a polyethyleneimine (PEI)/Zr4+-functionalized nanofluidic sensing platform based on nonlinear hybridization chain reaction (NHCR) was developed for PNK activity assay. With the existence of PNK, the hairpin HPNK was cleaved by λ exonuclease, liberating the initiator T-DNA. Then T-DNA triggered the nonlinear HCR in solution and the reaction products were absorbed onto the nanopore, which changed the surface charge of nanofluidic device and could be detected by current-voltage characteristic curves. Compared to traditional linear HCR, the nonlinear HCR exhibits a higher sensitivity and order of growth kinetics, making it a powerful signal amplifier in bioanalysis. Due to the powerful amplification efficiency of nonlinear HCR, high sensitivity of the nanopore and specific recognition site of PNK/λ-Exo, an ultrasensitive and selective PNK sensing approach had been developed and applied to precisely quantitate the PNK activity with a LOD of 0.0001 U/mL. Moreover, utilizing this nanofluidic system as a foundation, we constructed a logic circuit that utilized PNK, adenosine diphosphate (ADP), and (NH4)2SO4 as input elements. ADP and (NH4)2SO4 had a crucial function in facilitating the PNK to regulate the DNA logic gate. By modifying the target and inhibitors, the nanofluidic device could detect a variety of stimuli and execute more advanced logical operations.
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Affiliation(s)
- Siqi Zhang
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Jiaojiang, Zhejiang, 318000, China
| | - Huahao Shao
- Zhijiang College of Zhejiang University of Technology, Shaoxing, Zhejiang, 312000, China
| | - Kai-Bin Li
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Jiaojiang, Zhejiang, 318000, China.
| | - Wei Shi
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Jiaojiang, Zhejiang, 318000, China
| | - De-Man Han
- School of Pharmaceutical and Chemical Engineering, Taizhou University, Jiaojiang, Zhejiang, 318000, China.
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2
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Liu XW, Liu WJ, Meng Y, Hu J, Zhang CY. Development of a tandem signal amplification strategy for label-free sensing polynucleotide kinase activity in cancer cells. Talanta 2023. [DOI: 10.1016/j.talanta.2022.124001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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3
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Zhang Y, Li R, Yu S, Shang J, He Y, Wang Y, Liu X, Wang F. Sensitive Autocatalytic Hybridization Circuit for Reliable In Situ Intracellular Polynucleotide Kinase Imaging. Anal Chem 2022; 94:13951-13957. [PMID: 36170650 DOI: 10.1021/acs.analchem.2c03169] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Exploring the characteristic functions of polynucleotide kinase (PNK) could substantially promote the elucidation of PNK-related mechanistic pathways. Yet, the sensitive and reliable detection of intracellular PNK still presents a challenging goal. Herein, we propose a simple autocatalytic hybridization circuit (AHC) for in situ intracellular imaging of PNK with high reliability. The AHC amplifier consists of two mutually activated hybridization chain reaction (HCR) modules for magnified signal transduction. The PNK is transduced into initiator I by phosphorylation and cleavage of mediator Hp. Initiator I activates the initial HCR-1 module, leading to the formation of long dsDNA nanowires that carry numerous initiator T. Then, T-initiated feedback HCR-2 module generates branched products that contain plentiful initiator I, thus realizing an autocatalytic HCR amplification reaction. Simultaneously, the HCR-2 module is also assembled as a versatile signal transduction unit for generating the amplified readout. Based on the mutually sustained accumulation of two initiators for the reciprocal activation of two reaction modules, continuous signal amplification and assembly of high-molecular-weight copolymers endow the AHC system with high sensitivity and robustness for the PNK assay. Moreover, the PNK-sensing AHC system achieves reliable imaging of intracellular PNK, thus showing great potential to decipher the correlation between PNK and related diseases.
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Affiliation(s)
- Yanping Zhang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Ruomeng Li
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Shanshan Yu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Jinhua Shang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Yuqiu He
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Yushi Wang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Xiaoqing Liu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Fuan Wang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China.,Wuhan Research Center for Infectious Diseases and Cancer, Chinese Academy of Medical Sciences, Wuhan 430072, P. R. China
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4
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Zhu J, Chen L. Highly efficient incorporation of dATP in terminal transferase polymerization forming the ploy (A)n-DITO-1 fluorescent probe sensing terminal transferase and T4 polynucleotide kinase activity. Anal Chim Acta 2022; 1221:340080. [DOI: 10.1016/j.aca.2022.340080] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 05/23/2022] [Accepted: 06/09/2022] [Indexed: 11/29/2022]
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5
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Jia D, Fan W, Ren W, Liu C. One-step detection of T4 polynucleotide kinase activity based on single particle-confined enzyme reaction and digital particle counting. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.07.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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6
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Discovery of potential inhibitors targeting the kinase domain of polynucleotide kinase/phosphatase (PNKP): Homology modeling, virtual screening based on multiple conformations, and molecular dynamics simulation. Comput Biol Chem 2021; 94:107517. [PMID: 34456161 DOI: 10.1016/j.compbiolchem.2021.107517] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 05/11/2021] [Accepted: 05/16/2021] [Indexed: 12/15/2022]
Abstract
In recent years, the level of interest has been increased in developing the DNA-repair inhibitors, to enhance the cytotoxic effects in the treatment of cancers. Polynucleotide kinase/phosphatase (PNKP) is a critical human DNA repair enzyme that repairs DNA strand breaks by catalyzing the restoration of 5'-phosphate and 3'-hydroxyl termini that are required for subsequent processing by DNA ligases and polymerases. PNKP is the only protein that repairs the 3'-hydroxyl group and 5'-phosphate group, which depicts PNKP as a potential therapeutic target. Besides, PNKP is the only DNA-repair enzyme that contains the 5'-kinase activity, therefore, targeting this kinase domain would motivate the development of novel PNKP-specific inhibitors. However, there are neither crystal structures of human PNKP nor the kinase inhibitors reported so far. Thus, in this present study, a sequential molecular docking-based virtual screening with multiple PNKP conformations integrating homology modeling, molecular dynamics simulation, and binding free energy calculation was developed to discover novel PNKP kinase inhibitors, and the top-scored molecule was finally submitted to molecular dynamics simulation to reveal the binding mechanism between the inhibitor and PNKP. Taken together, the current study could provide some guidance for the molecular docking based-virtual screening of novel PNKP kinase inhibitors.
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7
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Huang G, Su C, Wang L, Fei Y, Yang J. The Application of Nucleic Acid Probe-Based Fluorescent Sensing and Imaging in Cancer Diagnosis and Therapy. Front Chem 2021; 9:705458. [PMID: 34141699 PMCID: PMC8204288 DOI: 10.3389/fchem.2021.705458] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 05/17/2021] [Indexed: 01/27/2023] Open
Abstract
It is well known that cancer incidence and death rates have been growing, but the development of cancer theranostics and therapeutics has been a challenging work. Recently, nucleic acid probe-based fluorescent sensing and imaging have achieved remarkable improvements in a variety of cancer management techniques, credited to their high sensitivity, good tolerance to interference, fast detection, and high versatility. Herein, nucleic acid probe-based fluorescent sensing and imaging are labeled with advanced fluorophores, which are essential for fast and sensitive detection of aberrant nucleic acids and other cancer-relevant molecules, consequently performing cancer early diagnosis and targeted treatment. In this review, we introduce the characteristics of nucleic acid probes, summarize the development of nucleic acid probe-based fluorescent sensing and imaging, and prominently elaborate their applications in cancer diagnosis and treatment. In discussion, some challenges and perspectives are elaborated in the field of nucleic acid probe-based fluorescent sensing and imaging.
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Affiliation(s)
- Ge Huang
- Department of Medicine, University of South China, Hengyang, China.,Department of Anesthesiology and Pain Medicine, Hunan Cancer Hospital/The Affiliated Cancer Hospital of Xiangya School of Medicine, Changsha, China
| | - Chen Su
- Department of Anesthesiology and Pain Medicine, Hunan Cancer Hospital/The Affiliated Cancer Hospital of Xiangya School of Medicine, Changsha, China
| | - Lijuan Wang
- Department of Medicine, University of South China, Hengyang, China.,Department of Anesthesiology and Pain Medicine, Hunan Cancer Hospital/The Affiliated Cancer Hospital of Xiangya School of Medicine, Changsha, China
| | - Yanxia Fei
- Department of Anesthesiology and Pain Medicine, Hunan Cancer Hospital/The Affiliated Cancer Hospital of Xiangya School of Medicine, Changsha, China
| | - Jinfeng Yang
- Department of Anesthesiology and Pain Medicine, Hunan Cancer Hospital/The Affiliated Cancer Hospital of Xiangya School of Medicine, Changsha, China
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8
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Zhang Y, Wu Y, Wu Y, Chang Y, Liu M. CRISPR-Cas systems: From gene scissors to programmable biosensors. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2021.116210] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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9
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Zhao H, Yan Y, Chen M, Hu T, Wu K, Liu H, Ma C. Exonuclease III-assisted signal amplification strategy for sensitive fluorescence detection of polynucleotide kinase based on poly(thymine)-templated copper nanoparticles. Analyst 2020; 144:6689-6697. [PMID: 31598619 DOI: 10.1039/c9an01659g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
A sensitive and label-free fluorometric method has been developed for the determination of polynucleotide kinase (PNK) activity, by employing exonuclease III (Exo III)-assisted cyclic signal amplification and poly(thymine)-templated copper nanoparticles (polyT-CuNPs). In the presence of PNK, cDNA with 5'-hydroxyl termini was phosphorylated and then hybridized with tDNA to form the cDNA/tDNA duplex, which subsequently triggered the λ exonuclease cleavage reaction, eventually resulting in the release of tDNA. The released tDNA could unfold the hairpin structure of HP DNA to generate partially complementary duplex (tDNA/HP DNA), wherein the HP DNA possessed T-rich sequences (T30) and tDNA recognition sequence. With the help of Exo III digestion, the tDNA was able to initiate the cycle for the generation of T-rich sequences, the template for the formation of fluorescent CuNPs. Conversely, the cDNA could not be cleaved by λ exonuclease without PNK and individual HP DNA could not be hydrolyzed by Exo III. The T-rich sequence was caged in HP DNA, resulting in a weak fluorescence signal. Under optimized conditions, the fluorescence intensity was linearly correlated to a concentration range of 0.001 to 1 U mL-1 with a low detection limit of 2 × 10-4 U mL-1. Considering the intriguing analytical performance, this approach could be explored to screen T4 PNK inhibitors and hold promising applications in drug discovery and disease therapy.
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Affiliation(s)
- Han Zhao
- School of Life Sciences, Central South University, Changsha 410013, China.
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10
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A nanoplatform based on metal-organic frameworks and coupled exonuclease reaction for the fluorimetric determination of T4 polynucleotide kinase activity and inhibition. Mikrochim Acta 2020; 187:243. [PMID: 32206934 DOI: 10.1007/s00604-020-4194-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 02/25/2020] [Indexed: 10/24/2022]
Abstract
A nanoplatform based on metal-organic frameworks (MOFs) and lambda exonuclease (λ exo) for the fluorimetric determination of T4 polynucleotide kinase (T4 PNK) activity and inhibition is described. Fe-MIL-88 was selected as the nanomaterial because of its significant preferential binding ability to single-stranded DNA (ssDNA) over double-stranded DNA (dsDNA) and its quenching property. The synthesized Fe-MIL-88 was characterized by transmission electron microscope, scanning electron microscope, and X-ray photoelectron spectroscopy. In the presence of T4 PNK, FAM-labeled dsDNA (FAM-dsDNA) is phosphorylated on its 5'-terminal. λ exo then recognizes and cleaves the phosphorylated strand yielding FAM-labeled ssDNA (FAM-ssDNA). The fluorescence of the produced FAM-ssDNA is quenched due to Fe-MIL-88's absorbing on FAM-ssDNA. On the contrary, in the absence of T4 PNK, the phosphorylation and cleavage processes cannot take place. Therefore, the fluorescence of FAM-dsDNA still remains. The fluorescence intensity is detected at the maximum emission wavelength of 524 nm using the maximum excitation wavelength of 488 nm. The assay of T4 PNK based on the fluorescence quenching of FAM-ssDNA achieves a linear relationship in the range 0.01-5.0 U mL-1 with a detection limit of 0.0089 U mL-1 in buffer. The assay exhibits excellent performance for T4 PNK activity determination in a complex biological matrix. The results also reveal the ability of the assay for T4 PNK inhibitor screening. Graphical abstract Schematic presentation of a nanoplatform based on Fe-MIL-88 and coupled exonuclease reaction for the fluorimetric determination of T4 polynucleotide kinase activity. FAM-ssDNA, FAM-labeled single-stranded DNA; cDNA, complementary DNA; λ exo, lambda exonuclease;T4 PNK, T4 polynucleotide kinase.
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11
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Li XY, Cui YX, Du YC, Tang AN, Kong DM. Isothermal cross-boosting extension–nicking reaction mediated exponential signal amplification for ultrasensitive detection of polynucleotide kinase. Analyst 2020; 145:3742-3748. [DOI: 10.1039/c9an02569c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A novel nucleic acid-based isothermal signal amplification strategy, named cross-boosting extension–nicking reaction (CBENR) is developed and successfully used for rapid and ultrasensitive detection of polynucleotide kinase (PNK) activity.
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Affiliation(s)
- Xiao-Yu Li
- State Key Laboratory of Medicinal Chemical Biology
- Tianjin Key Laboratory of Biosensing and Molecular Recognition
- Research Center for Analytical Sciences
- College of Chemistry
- Nankai University
| | - Yun-Xi Cui
- State Key Laboratory of Medicinal Chemical Biology
- Tianjin Key Laboratory of Biosensing and Molecular Recognition
- Research Center for Analytical Sciences
- College of Chemistry
- Nankai University
| | - Yi-Chen Du
- State Key Laboratory of Medicinal Chemical Biology
- Tianjin Key Laboratory of Biosensing and Molecular Recognition
- Research Center for Analytical Sciences
- College of Chemistry
- Nankai University
| | - An-Na Tang
- State Key Laboratory of Medicinal Chemical Biology
- Tianjin Key Laboratory of Biosensing and Molecular Recognition
- Research Center for Analytical Sciences
- College of Chemistry
- Nankai University
| | - De-Ming Kong
- State Key Laboratory of Medicinal Chemical Biology
- Tianjin Key Laboratory of Biosensing and Molecular Recognition
- Research Center for Analytical Sciences
- College of Chemistry
- Nankai University
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12
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Wang M, Kong D, Su D, Liu Y, Su X. Ratio fluorescence analysis of T4 polynucleotide kinase activity based on the formation of a graphene quantum dot-copper nanocluster nanohybrid. NANOSCALE 2019; 11:13903-13908. [PMID: 31304938 DOI: 10.1039/c9nr02901j] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this work, a ratio fluorescence method was developed for T4 polynucleotide kinase (PNK) activity analysis based on the formation of a dual-emitting graphene quantum dot-copper nanocluster (GQD-CuNC) nanohybrid. An amino capped single-strand DNA (ssDNA) was firstly used to modify GQDs (GQD-ssDNA) and then hybridize with its complementary DNA strand to form double-stranded DNA functionalized GQDs (GQD-dsDNA). The dsDNA of GQD-dsDNA can act as an effective template for the preparation of CuNCs with fluorescence emission at 594 nm. When the dsDNA of GQD-dsDNA was phosphorylated through T4 PNK and subsequently degraded via λ exonuclease (λ exo) to produce mononucleotides and GQD-ssDNA, the formation of fluorescence CuNCs in GQD-CuNCs was blocked due to the lack of an effective dsDNA substrate, during which the fluorescence of GQDs at 446 nm in the nanohybrid was mostly not influenced. Thus, with the CuNCs serving as the reporter and GQDs as the reference signal, T4 PNK activity can be monitored through the change in the fluorescence intensity ratio (F594/F446) in the range of 0.01-10 U mL-1 with a detection limit (LOD) of 0.0037 U mL-1. Furthermore, the practicality of this T4 PNK activity analysis strategy in a complex sample was tested in cell lysates.
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Affiliation(s)
- Mengke Wang
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, PR China.
| | - Deshuai Kong
- State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, PR China
| | - Dandan Su
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, PR China.
| | - Yang Liu
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, PR China.
| | - Xingguang Su
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, PR China.
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Zhang Y, Zhao J, Chen S, Li S, Zhao S. A novel microchip electrophoresis laser induced fluorescence detection method for the assay of T4 polynucleotide kinase activity and inhibitors. Talanta 2019; 202:317-322. [PMID: 31171188 DOI: 10.1016/j.talanta.2019.05.032] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 05/01/2019] [Accepted: 05/04/2019] [Indexed: 12/19/2022]
Abstract
T4 polynucleotide kinase (T4 PNK) may catalyze the phosphorylation of 5'-hydroxyl termini in nucleic acids, which play a crucial role in DNA recombination, replication and damage repair. Here, a microchip electrophoresis laser induced fluorescence (MCE-LIF) method based on biochemical reaction was developed for the detection of T4 PNK activity and inhibitors. In this method, the single strand DNA (ssDNA) was hybridized with the 5-carboxyfluorescein (FAM) labeled single strand DNA (ssDNA-FAM) to form FAM labeled double-stranded DNA (dsDNA-FAM). In the presence of T4 PNK and adenosine triphosphate (ATP), T4 PNK catalyzes the transfer of γ-phosphate residues from ATP to the 5-hydroxyl terminal of dsDNA-FAM. The phosphorylated dsDNA-FAM can be gradually hydrolyzed by λexo to produce a FAM labeled single nucleotide fragment. Then the FAM labeled single nucleotide fragment and the unhydrolyzed dsDNA-FAM were separated by MCE, and two electrophoresis peaks appeared in the electrophoretogram. The detection of T4 PNK activity and inhibitors was realized by measuring the peak height of the FAM labeled single nucleotide fragment in electrophoretogram. This assay is very sensitive with a limit of detection of 0.002 U/mL, and it can be further used to screen the T4 PNK inhibitors.
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Affiliation(s)
- Yan Zhang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin, 541004, China
| | - Jingjin Zhao
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin, 541004, China.
| | - Shenyu Chen
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin, 541004, China
| | - Shuting Li
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin, 541004, China
| | - Shulin Zhao
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin, 541004, China.
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14
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Cui YX, Feng XN, Li XY, Zhang YP, Tang AN, Kong DM. Trifunctional integrated DNA-based universal sensing platform for detection of diverse biomolecules in one-pot isothermal exponential amplification mode. Chem Commun (Camb) 2019; 55:7603-7606. [DOI: 10.1039/c9cc03758f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Template constructed with only a short single-stranded DNA is necessary; it is first recognized by the target enzyme, then multiple amplification cycles are initiated, achieving ultra-high sensitivity by a one-pot isothermal reaction.
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Affiliation(s)
- Yun-Xi Cui
- State Key Laboratory of Medicinal Chemical Biology
- Tianjin Key Laboratory of Biosensing and Molecular Recognition
- Research Centre for Analytical Sciences
- College of Chemistry
- Nankai University
| | - Xue-Nan Feng
- State Key Laboratory of Medicinal Chemical Biology
- Tianjin Key Laboratory of Biosensing and Molecular Recognition
- Research Centre for Analytical Sciences
- College of Chemistry
- Nankai University
| | - Xiao-Yu Li
- State Key Laboratory of Medicinal Chemical Biology
- Tianjin Key Laboratory of Biosensing and Molecular Recognition
- Research Centre for Analytical Sciences
- College of Chemistry
- Nankai University
| | - Yu-Peng Zhang
- State Key Laboratory of Medicinal Chemical Biology
- Tianjin Key Laboratory of Biosensing and Molecular Recognition
- Research Centre for Analytical Sciences
- College of Chemistry
- Nankai University
| | - An-Na Tang
- State Key Laboratory of Medicinal Chemical Biology
- Tianjin Key Laboratory of Biosensing and Molecular Recognition
- Research Centre for Analytical Sciences
- College of Chemistry
- Nankai University
| | - De-Ming Kong
- State Key Laboratory of Medicinal Chemical Biology
- Tianjin Key Laboratory of Biosensing and Molecular Recognition
- Research Centre for Analytical Sciences
- College of Chemistry
- Nankai University
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15
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Zhang X, Liu Q, Jin Y, Li B. Determination of the activity of T4 polynucleotide kinase phosphatase by exploiting the sequence-dependent fluorescence of DNA-templated copper nanoclusters. Mikrochim Acta 2018; 186:3. [DOI: 10.1007/s00604-018-3102-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 11/16/2018] [Indexed: 12/23/2022]
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16
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Cui L, Hu J, Li CC, Wang CM, Zhang CY. An electrochemical biosensor based on the enhanced quasi-reversible redox signal of prussian blue generated by self-sacrificial label of iron metal-organic framework. Biosens Bioelectron 2018; 122:168-174. [DOI: 10.1016/j.bios.2018.09.061] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 09/15/2018] [Accepted: 09/17/2018] [Indexed: 11/25/2022]
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17
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Mani RS, Mermershtain I, Abdou I, Fanta M, Hendzel MJ, Glover JNM, Weinfeld M. Domain analysis of PNKP-XRCC1 interactions: Influence of genetic variants of XRCC1. J Biol Chem 2018; 294:520-530. [PMID: 30446622 DOI: 10.1074/jbc.ra118.004262] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 11/05/2018] [Indexed: 12/28/2022] Open
Abstract
Polynucleotide kinase/phosphatase (PNKP) and X-ray repair cross-complementing 1 (XRCC1) are key proteins in the single-strand DNA break repair pathway. Phosphorylated XRCC1 stimulates PNKP by binding to its forkhead-associated (FHA) domain, whereas nonphosphorylated XRCC1 stimulates PNKP by interacting with the PNKP catalytic domain. Here, we have further studied the interactions between these two proteins, including two variants of XRCC1 (R194W and R280H) arising from single-nucleotide polymorphisms (SNPs) that have been associated with elevated cancer risk in some reports. We observed that interaction of the PNKP FHA domain with phosphorylated XRCC1 extends beyond the immediate, well-characterized phosphorylated region of XRCC1 (residues 515-526). We also found that an XRCC1 fragment, comprising residues 166-436, binds tightly to PNKP and DNA and efficiently activates PNKP's kinase activity. However, interaction of either of the SNP-derived variants of this fragment with PNKP was considerably weaker, and their stimulation of PNKP was severely reduced, although they still could bind DNA effectively. Laser microirradiation revealed reduced recruitment of PNKP to damaged DNA in cells expressing either XRCC1 variant compared with PNKP recruitment in cells expressing WT XRCC1 even though WT and variant XRCC1s were equally efficient at localizing to the damaged DNA. These findings suggest that the elevated risk of cancer associated with these XRCC1 SNPs reported in some studies may be due in part to the reduced ability of these XRCC1 variants to recruit PNKP to damaged DNA.
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Affiliation(s)
- Rajam S Mani
- From the Department of Oncology, University of Alberta, Edmonton, Alberta T6G 1Z2 and
| | - Inbal Mermershtain
- the Department of Biochemistry, University of Alberta, Edmonton, Alberta T6G 2H7, Canada
| | - Ismail Abdou
- From the Department of Oncology, University of Alberta, Edmonton, Alberta T6G 1Z2 and
| | - Mesfin Fanta
- From the Department of Oncology, University of Alberta, Edmonton, Alberta T6G 1Z2 and
| | - Michael J Hendzel
- From the Department of Oncology, University of Alberta, Edmonton, Alberta T6G 1Z2 and
| | - J N Mark Glover
- the Department of Biochemistry, University of Alberta, Edmonton, Alberta T6G 2H7, Canada
| | - Michael Weinfeld
- From the Department of Oncology, University of Alberta, Edmonton, Alberta T6G 1Z2 and
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18
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Gu L, Yan W, Liu L, Wang S, Zhang X, Lyu M. Research Progress on Rolling Circle Amplification (RCA)-Based Biomedical Sensing. Pharmaceuticals (Basel) 2018; 11:E35. [PMID: 29690513 PMCID: PMC6027247 DOI: 10.3390/ph11020035] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 04/10/2018] [Accepted: 04/10/2018] [Indexed: 12/26/2022] Open
Abstract
Enhancing the limit of detection (LOD) is significant for crucial diseases. Cancer development could take more than 10 years, from one mutant cell to a visible tumor. Early diagnosis facilitates more effective treatment and leads to higher survival rate for cancer patients. Rolling circle amplification (RCA) is a simple and efficient isothermal enzymatic process that utilizes nuclease to generate long single stranded DNA (ssDNA) or RNA. The functional nucleic acid unit (aptamer, DNAzyme) could be replicated hundreds of times in a short period, and a lower LOD could be achieved if those units are combined with an enzymatic reaction, Surface Plasmon Resonance, electrochemical, or fluorescence detection, and other different kinds of biosensor. Multifarious RCA-based platforms have been developed to detect a variety of targets including DNA, RNA, SNP, proteins, pathogens, cytokines, micromolecules, and diseased cells. In this review, improvements in using the RCA technique for medical biosensors and biomedical applications were summarized and future trends in related research fields described.
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Affiliation(s)
- Lide Gu
- College of Marine Life and Fisheries, Huahai Institute of Technology, Lianyungang 222005, China.
| | - Wanli Yan
- College of Marine Life and Fisheries, Huahai Institute of Technology, Lianyungang 222005, China.
| | - Le Liu
- College of Marine Life and Fisheries, Huahai Institute of Technology, Lianyungang 222005, China.
| | - Shujun Wang
- Marine Resources Development Institute of Jiangsu, Lianyungang 222005, China.
- Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Huaihai Institute of Technology, Lianyungang 222005, China.
| | - Xu Zhang
- Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Huaihai Institute of Technology, Lianyungang 222005, China.
- Verschuren Centre for Sustainability in Energy & the Environment, Cape Breton University, Sydney, NS B1P 6L2, Canada.
| | - Mingsheng Lyu
- College of Marine Life and Fisheries, Huahai Institute of Technology, Lianyungang 222005, China.
- Marine Resources Development Institute of Jiangsu, Lianyungang 222005, China.
- Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Huaihai Institute of Technology, Lianyungang 222005, China.
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19
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Feng C, Wang Z, Chen T, Chen X, Mao D, Zhao J, Li G. A Dual-Enzyme-Assisted Three-Dimensional DNA Walking Machine Using T4 Polynucleotide Kinase as Activators and Application in Polynucleotide Kinase Assays. Anal Chem 2018; 90:2810-2815. [DOI: 10.1021/acs.analchem.7b04924] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Chang Feng
- State
Key Laboratory of Pharmaceutical Biotechnology and Collaborative Innovation
Center of Chemistry for Life Sciences, Department of Biochemistry, Nanjing University, Nanjing 210093, P.R. China
| | - Zihan Wang
- Center
for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai 200444, P.R. China
| | - Tianshu Chen
- Center
for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai 200444, P.R. China
| | - Xiaoxia Chen
- Center
for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai 200444, P.R. China
| | - Dongsheng Mao
- Center
for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai 200444, P.R. China
| | - Jing Zhao
- Center
for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai 200444, P.R. China
| | - Genxi Li
- State
Key Laboratory of Pharmaceutical Biotechnology and Collaborative Innovation
Center of Chemistry for Life Sciences, Department of Biochemistry, Nanjing University, Nanjing 210093, P.R. China
- Center
for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai 200444, P.R. China
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20
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Liu M, Ma F, Zhang Q, Zhang CY. Label-free and ultrasensitive detection of polynucleotide kinase activity at the single-cell level. Chem Commun (Camb) 2018; 54:1583-1586. [DOI: 10.1039/c7cc09573b] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We develop a label-free fluorescence method for the polynucleotide kinase assay at the single-cell level based on phosphorylation-triggered isothermal exponential amplification.
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Affiliation(s)
- Meng Liu
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Fei Ma
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | | | - Chun-yang Zhang
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
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21
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Li XY, Du YC, Pan YN, Su LL, Shi S, Wang SY, Tang AN, Kim K, Kong DM. Dual enzyme-assisted one-step isothermal real-time amplification assay for ultrasensitive detection of polynucleotide kinase activity. Chem Commun (Camb) 2018; 54:13841-13844. [DOI: 10.1039/c8cc08616h] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A novel, simple, one-step and one-tube detection method for polynucleotide kinase (PNK) activity based on isothermal real-time amplification assay was proposed.
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Affiliation(s)
- Xiao-Yu Li
- State Key Laboratory of Medicinal Chemical Biology
- Tianjin Key Laboratory of Biosensing and Molecular Recognition
- College of Chemistry
- Nankai University
- Tianjin
| | - Yi-Chen Du
- State Key Laboratory of Medicinal Chemical Biology
- Tianjin Key Laboratory of Biosensing and Molecular Recognition
- College of Chemistry
- Nankai University
- Tianjin
| | - Yan-Nian Pan
- State Key Laboratory of Medicinal Chemical Biology
- Tianjin Key Laboratory of Biosensing and Molecular Recognition
- College of Chemistry
- Nankai University
- Tianjin
| | - Li-Li Su
- State Key Laboratory of Medicinal Chemical Biology
- Tianjin Key Laboratory of Biosensing and Molecular Recognition
- College of Chemistry
- Nankai University
- Tianjin
| | - Shuo Shi
- State Key Laboratory of Medicinal Chemical Biology
- Tianjin Key Laboratory of Biosensing and Molecular Recognition
- College of Chemistry
- Nankai University
- Tianjin
| | - Si-Yuan Wang
- State Key Laboratory of Medicinal Chemical Biology
- Tianjin Key Laboratory of Biosensing and Molecular Recognition
- College of Chemistry
- Nankai University
- Tianjin
| | - An-Na Tang
- State Key Laboratory of Medicinal Chemical Biology
- Tianjin Key Laboratory of Biosensing and Molecular Recognition
- College of Chemistry
- Nankai University
- Tianjin
| | - Kwangil Kim
- State Key Laboratory of Medicinal Chemical Biology
- Tianjin Key Laboratory of Biosensing and Molecular Recognition
- College of Chemistry
- Nankai University
- Tianjin
| | - De-Ming Kong
- State Key Laboratory of Medicinal Chemical Biology
- Tianjin Key Laboratory of Biosensing and Molecular Recognition
- College of Chemistry
- Nankai University
- Tianjin
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22
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Horton JK, Stefanick DF, Zhao ML, Janoshazi AK, Gassman NR, Seddon HJ, Wilson SH. XRCC1-mediated repair of strand breaks independent of PNKP binding. DNA Repair (Amst) 2017; 60:52-63. [PMID: 29100039 PMCID: PMC5696015 DOI: 10.1016/j.dnarep.2017.10.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Revised: 10/03/2017] [Accepted: 10/12/2017] [Indexed: 10/18/2022]
Abstract
Repair of DNA-protein crosslinks and oxidatively damaged DNA base lesions generates intermediates with nicks or gaps with abnormal and blocked 3'-phosphate and 5'-OH ends that prevent the activity of DNA polymerases and ligases. End cleaning in mammalian cells by Tdp1 and PNKP produces the conventional 3'-OH and 5'-phosphate DNA ends suitable for completion of repair. This repair function of PNKP is facilitated by its binding to the scaffold protein XRCC1, and phosphorylation of XRCC1 by CK2 at several consensus sites enables PNKP binding and recruitment to DNA damage. To evaluate this documented repair process, a phosphorylation mutant of XRCC1, designed to eliminate PNKP binding, was stably expressed in Xrcc1-/- mouse fibroblast cells. Analysis of PNKP-GFP accumulation at micro-irradiation induced damage confirmed that the XRCC1 phosphorylation mutant failed to support efficient PNKP recruitment, whereas there was rapid recruitment in cells expressing wild-type XRCC1. Recruitment of additional fluorescently-tagged repair factors PARP-1-YFP, GFF-XRCC1, PNKP-GFP and Tdp1-GFP to micro-irradiation induced damage was assessed in wild-type XRCC1-expressing cells. PARP-1-YFP recruitment was best fit to two exponentials, whereas kinetics for the other proteins were fit to a single exponential. The similar half-times of recruitment suggest that XRCC1 may be recruited with other proteins possibly as a pre-formed complex. Xrcc1-/- cells are hypersensitive to the DNA-protein cross-link inducing agent camptothecin (CPT) and the DNA oxidative agent H2O2 due in part to compromised PNKP-mediated repair. However, cells expressing the PNKP interaction mutant of XRCC1 demonstrated marked reversal of CPT hypersensitivity. This reversal represents XRCC1-dependent repair in the absence of the phosphorylation-dependent PNKP recruitment and suggests either an XRCC1-independent mechanism of PNKP recruitment or a functional back-up pathway for cleaning of blocked DNA ends.
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Affiliation(s)
- Julie K Horton
- Genomic Integrity and Structural Biology Laboratory, NIEHS, National Institutes of Health, Research Triangle Park, NC 27709, USA
| | - Donna F Stefanick
- Genomic Integrity and Structural Biology Laboratory, NIEHS, National Institutes of Health, Research Triangle Park, NC 27709, USA
| | - Ming-Lang Zhao
- Genomic Integrity and Structural Biology Laboratory, NIEHS, National Institutes of Health, Research Triangle Park, NC 27709, USA
| | - Agnes K Janoshazi
- Signal Transduction Laboratory, NIEHS, National Institutes of Health, Research Triangle Park, North Carolina 27709, USA
| | - Natalie R Gassman
- Genomic Integrity and Structural Biology Laboratory, NIEHS, National Institutes of Health, Research Triangle Park, NC 27709, USA
| | - Hannah J Seddon
- Genomic Integrity and Structural Biology Laboratory, NIEHS, National Institutes of Health, Research Triangle Park, NC 27709, USA
| | - Samuel H Wilson
- Genomic Integrity and Structural Biology Laboratory, NIEHS, National Institutes of Health, Research Triangle Park, NC 27709, USA.
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23
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Dumbbell DNA-templated CuNPs as a nano-fluorescent probe for detection of enzymes involved in ligase-mediated DNA repair. Biosens Bioelectron 2017; 94:456-463. [DOI: 10.1016/j.bios.2017.03.035] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Revised: 03/06/2017] [Accepted: 03/16/2017] [Indexed: 11/23/2022]
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24
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Abstract
Approximately half of high-grade serous epithelial ovarian cancers incur alterations in genes of homologous recombination (BRCA1, BRCA2, RAD51C, Fanconi anemia genes), and the rest incur alterations in other DNA repair pathways at high frequencies. Such cancer-specific gene alterations can confer selective sensitivity to DNA damaging agents such as cisplatin and carboplatin, topotecan, etoposide, doxorubicin, and gemcitabine. Originally presumed to inhibit DNA repair, PARP inhibitors that have recently been approved by the FDA for the treatment of advanced ovarian cancer also act as DNA damaging agents by inducing PARP-DNA complexes. These DNA damaging agents induce different types of DNA lesions that require various DNA repair genes for the repair, but commonly induce replication fork slowing or stalling, also referred to as replication stress. Replication stress activates DNA repair checkpoint proteins (ATR, CHK1), which prevent further DNA damage. Hence, targeting DNA repair genes or DNA repair checkpoint genes augments the anti-tumor activity of DNA damaging agents. This review describes the rational basis for using DNA repair and DNA repair checkpoint inhibitors as single agents. The review also presents the strategies combining these inhibitors with DNA damaging agents for ovarian cancer therapy based on specific gene alterations.
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25
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Wang LJ, Zhang Q, Tang B, Zhang CY. Single-Molecule Detection of Polynucleotide Kinase Based on Phosphorylation-Directed Recovery of Fluorescence Quenched by Au Nanoparticles. Anal Chem 2017; 89:7255-7261. [PMID: 28585816 DOI: 10.1021/acs.analchem.7b01783] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
5'-Polynucleotide kinase such as T4 polynucleotide kinase (T4 PNK) may catalyze the phosphorylation of 5'-hydroxyl termini in nucleic acids, playing a crucial role in DNA replication, DNA recombination, and DNA damage repair. Here, we demonstrate for the first time single-molecule detection of PNK based on phosphorylation-directed recovery of fluorescence quenched by Au nanoparticle (AuNP) in combination with lambda exonuclease-mediated cleavage reaction. In the presence of PNK, the γ-phosphate group from adenosine triphosphate (ATP) is transferred to 5'-hydroxyl terminus, resulting in 5'-phosphorylation of the hairpin probe. The phosphorylated hairpin probes may function as the substrates of lambda exonuclease and enable the removal of 5' mononucleotides from the stem, leading to the unfolding of hairpin structure and the formation of binding probes. The resultant binding probes may specifically hybridize with the AuNP-modified capture probes, forming double-strand DNA (dsDNA) duplexes with 5'-phosphate groups as the substrates of lambda exonuclease and subsequently leading to the cleavage of capture probes and the liberation of Cy5 molecules and the binding probes. The released binding probes may further hybridize with new capture probes, inducing cycles of digestion-release-hybridization and consequently the release of numerous Cy5 molecules. Through simply monitoring Cy5 molecules with total internal reflection fluorescence (TIRF)-based imaging, PNK activity can be quantitatively measured. This assay is very sensitive with a limit of detection of 9.77 × 10-8 U/μL, and it may be further used to screen the PNK inhibitors and measure PNK in cancer cell extracts.
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Affiliation(s)
- Li-Juan Wang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University , Jinan 250014, China
| | - Qianyi Zhang
- Nantou High School Shenzhen , Shenzhen, 518052, China
| | - Bo Tang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University , Jinan 250014, China
| | - Chun-Yang Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University , Jinan 250014, China
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26
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Label-free fluorescent assay of T4 polynucleotide kinase phosphatase activity based on G-quadruplexe−thioflavin T complex. Talanta 2017; 165:653-658. [DOI: 10.1016/j.talanta.2017.01.027] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 12/27/2016] [Accepted: 01/06/2017] [Indexed: 02/06/2023]
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27
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Havali-Shahriari Z, Weinfeld M, Glover JNM. Characterization of DNA Substrate Binding to the Phosphatase Domain of the DNA Repair Enzyme Polynucleotide Kinase/Phosphatase. Biochemistry 2017; 56:1737-1745. [PMID: 28276686 DOI: 10.1021/acs.biochem.6b01236] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Polynucleotide kinase/phosphatase (PNKP) is a DNA strand break repair enzyme that uses separate 5' kinase and 3' phosphatase active sites to convert damaged 5'-hydroxyl/3'-phosphate strand termini to ligatable 5'-phosphate/3'-hydroxyl ends. The phosphatase active site has received particular attention as a target of inhibition in cancer therapy development. The phosphatase domain dephosphorylates a range of single- and double-stranded substrates; however, structural studies have shown that the phosphatase catalytic cleft can bind only single-stranded substrates. Here we use a catalytically inactive but structurally intact phosphatase mutant to probe interactions between PNKP and a variety of single- and double-stranded DNA substrates using an electrophoretic mobility shift assay. This work indicates that the phosphatase domain binds 3'-phosphorylated single-stranded DNAs in a manner that is highly dependent on the presence of the 3'-phosphate. Double-stranded substrate binding, in contrast, is not as dependent on the 3'-phosphate. Experiments comparing blunt-end, 3'-overhanging, and frayed-end substrates indicate that the predicted loss of energy due to base pair disruption upon binding of the phosphatase active site is likely balanced by favorable interactions between the liberated complementary strand and PNKP. Comparison of the effects on substrate binding of mutations within the phosphatase active site cleft with mutations in surrounding positively charged surfaces suggests that the surrounding surfaces are important for binding to double-stranded substrates. We further show that while fluorescence polarization methods can detect specific binding of single-stranded DNAs with the phosphatase domain, this method does not detect specific interactions between the PNKP phosphatase and double-stranded substrates.
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Affiliation(s)
| | - Michael Weinfeld
- Department of Oncology, University of Alberta, Cross Cancer Institute , 11560 University Avenue, Edmonton, Alberta T6G 1Z2, Canada
| | - J N Mark Glover
- Department of Biochemistry, University of Alberta , Edmonton, Alberta T6G 2H7, Canada
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28
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Zhang H, Zhao Z, Lei Z, Wang Z. Sensitive Detection of Polynucleotide Kinase Activity by Paper-Based Fluorescence Assay with λ Exonuclease Assistance. Anal Chem 2016; 88:11358-11363. [DOI: 10.1021/acs.analchem.6b03567] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Hua Zhang
- State
Key Laboratory of Electroanalytical Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, People’s Republic of China
| | - Zhen Zhao
- State
Key Laboratory of Electroanalytical Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, People’s Republic of China
- University
of
Chinese Academy of Sciences, No. 19A
Yuquan Road, Beijing, 100049, People’s Republic of China
| | - Zhen Lei
- State
Key Laboratory of Electroanalytical Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, People’s Republic of China
- University
of
Chinese Academy of Sciences, No. 19A
Yuquan Road, Beijing, 100049, People’s Republic of China
| | - Zhenxin Wang
- State
Key Laboratory of Electroanalytical Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, People’s Republic of China
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29
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Label-free and sensitive detection of T4 polynucleotide kinase activity via coupling DNA strand displacement reaction with enzymatic-aided amplification. Biosens Bioelectron 2015; 73:138-145. [DOI: 10.1016/j.bios.2015.05.059] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 05/05/2015] [Accepted: 05/26/2015] [Indexed: 01/04/2023]
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30
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Pearl LH, Schierz AC, Ward SE, Al-Lazikani B, Pearl FMG. Therapeutic opportunities within the DNA damage response. Nat Rev Cancer 2015; 15:166-80. [PMID: 25709118 DOI: 10.1038/nrc3891] [Citation(s) in RCA: 384] [Impact Index Per Article: 42.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The DNA damage response (DDR) is essential for maintaining the genomic integrity of the cell, and its disruption is one of the hallmarks of cancer. Classically, defects in the DDR have been exploited therapeutically in the treatment of cancer with radiation therapies or genotoxic chemotherapies. More recently, protein components of the DDR systems have been identified as promising avenues for targeted cancer therapeutics. Here, we present an in-depth analysis of the function, role in cancer and therapeutic potential of 450 expert-curated human DDR genes. We discuss the DDR drugs that have been approved by the US Food and Drug Administration (FDA) or that are under clinical investigation. We examine large-scale genomic and expression data for 15 cancers to identify deregulated components of the DDR, and we apply systematic computational analysis to identify DDR proteins that are amenable to modulation by small molecules, highlighting potential novel therapeutic targets.
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Affiliation(s)
- Laurence H Pearl
- Genome Damage and Stability Centre, School of Life Sciences, University of Sussex, Falmer, Brighton BN1 9RQ, UK
| | - Amanda C Schierz
- 1] Cancer Research UK Cancer Therapeutics Unit, The Institute of Cancer Research, London SM2 5NG, UK. [2] Bluefool Innovations, 4 May Close, Sandhurst, Berkshire GU47 0UG, UK
| | - Simon E Ward
- Translational Drug Discovery Group, School of Life Sciences, University of Sussex, Falmer, Brighton BN1 9QJ, UK
| | - Bissan Al-Lazikani
- Cancer Research UK Cancer Therapeutics Unit, The Institute of Cancer Research, London SM2 5NG, UK
| | - Frances M G Pearl
- 1] Cancer Research UK Cancer Therapeutics Unit, The Institute of Cancer Research, London SM2 5NG, UK. [2] Translational Drug Discovery Group, School of Life Sciences, University of Sussex, Falmer, Brighton BN1 9QJ, UK
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31
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Wang Y, Wu Y, Wang Y, Zhou B, Wu S. A sensitive immobilization-free electrochemical assay for T4PNK activity based on exonuclease III-assisted recycling. RSC Adv 2015. [DOI: 10.1039/c5ra12849h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This work develops a novel, immobilization-free, simple and sensitive electrochemical platform for the detection of T4PNK activity based on λ-exo and exonuclease III-assisted signal amplification.
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Affiliation(s)
- Yonghong Wang
- College of Life Science and Technology
- Central South University of Forestry and Technology
- Changsha
- China
- State Key Laboratory of Chemo/Biosensing and Chemometrics
| | - Yaohui Wu
- College of Life Science and Technology
- Central South University of Forestry and Technology
- Changsha
- China
| | - Yuanqing Wang
- College of Life Science and Technology
- Central South University of Forestry and Technology
- Changsha
- China
| | - Bo Zhou
- College of Life Science and Technology
- Central South University of Forestry and Technology
- Changsha
- China
| | - Shun Wu
- College of Life Science and Technology
- Central South University of Forestry and Technology
- Changsha
- China
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32
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Du J, Xu Q, Lu X, Zhang CY. A label-free bioluminescent sensor for real-time monitoring polynucleotide kinase activity. Anal Chem 2014; 86:8481-8. [PMID: 25048013 DOI: 10.1021/ac502240c] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Polynucleotide kinase (PNK) plays a crucial role in maintaining the genomic stability of cells and is becoming a potential target in the radio-therapeutic treatment of cancers. The fluorescent method is usually used to measure the PNK activity, but it is impossible to obtain the real-time monitoring without the employment of the labeled DNA probes. Here, we report a label-free bioluminescent sensor for PNK activity assay through real-time monitoring of the phosphorylation-dependent DNA ligation reaction. In this bioluminescent sensor, two hairpin DNA probes with 5'-protruding terminal are designed as the phosphate acceptor, and the widely used phosphate donor of ATP is substituted by dCTP. In the absence of PNK, the ligation reaction cannot be triggered due to the lack of 5'-phosphoryl groups in the probes, and the background signal is negligible. With the addition of PNK, the phosphorylation-ligation reaction of the probes is initiated with the release of AMP, and the subsequent conversion of AMP to ATP leads to the generation of distinct bioluminescence signal. The PNK activity assay can be performed in real time by continuously monitoring the bioluminescence signal. This bioluminescent sensor is much simpler, label-free, cost-effective, and free from the autofluorescence interference of biological matrix, and can be further used for quantitative, kinetic, and inhibition assay.
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Affiliation(s)
- Jiao Du
- Key Laboratory of Bioelectrochemistry & Environmental analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University , Lanzhou 730070, China
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33
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Jiang HX, Kong DM, Shen HX. Amplified detection of DNA ligase and polynucleotide kinase/phosphatase on the basis of enrichment of catalytic G-quadruplex DNAzyme by rolling circle amplification. Biosens Bioelectron 2014; 55:133-8. [DOI: 10.1016/j.bios.2013.12.001] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2013] [Revised: 11/24/2013] [Accepted: 12/01/2013] [Indexed: 12/01/2022]
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34
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Mereniuk TR, El Gendy MAM, Mendes-Pereira AM, Lord CJ, Ghosh S, Foley E, Ashworth A, Weinfeld M. Synthetic lethal targeting of PTEN-deficient cancer cells using selective disruption of polynucleotide kinase/phosphatase. Mol Cancer Ther 2013; 12:2135-44. [PMID: 23883586 PMCID: PMC3793902 DOI: 10.1158/1535-7163.mct-12-1093] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A recent screen of 6,961 siRNAs to discover possible synthetic lethal partners of the DNA repair protein polynucleotide kinase/phosphatase (PNKP) led to the identification of the potent tumor suppressor phosphatase and tensin homolog deleted on chromosome 10 (PTEN). Here, we have confirmed the PNKP/PTEN synthetic lethal partnership in a variety of different cell lines including the PC3 prostate cancer cell line, which is naturally deficient in PTEN. We provide evidence that codepletion of PTEN and PNKP induces apoptosis. In HCT116 colon cancer cells, the loss of PTEN is accompanied by an increased background level of DNA double-strand breaks, which accumulate in the presence of an inhibitor of PNKP DNA 3'-phosphatase activity. Complementation of PC3 cells with several well-characterized mutated PTEN cDNAs indicated that the critical function of PTEN required to prevent toxicity induced by an inhibitor of PNKP is most likely associated with its cytoplasmic lipid phosphatase activity. Finally, we show that modest inhibition of PNKP in a PTEN knockout background enhances cellular radiosensitivity, suggesting that such a "synthetic sickness" approach involving the combination of PNKP inhibition with radiotherapy may be applicable to PTEN-deficient tumors.
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Affiliation(s)
- Todd R Mereniuk
- Corresponding Author: Michael Weinfeld, Cross Cancer Institute, University of Alberta, 11560 University Ave, Edmonton, AB, Canada, T6G 1Z2.
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35
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Double strand DNA-templated copper nanoparticle as a novel fluorescence indicator for label-free detection of polynucleotide kinase activity. Biosens Bioelectron 2013; 44:6-9. [DOI: 10.1016/j.bios.2012.12.037] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2012] [Revised: 12/15/2012] [Accepted: 12/17/2012] [Indexed: 12/19/2022]
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36
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Liu Y, Wang S, Zhang C, Su X, Huang S, Zhao M. Enhancing the Selectivity of Enzyme Detection by Using Tailor-Made Nanoparticles. Anal Chem 2013; 85:4853-7. [DOI: 10.1021/ac4007914] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Yibin Liu
- Beijing National
Laboratory for Molecular Sciences,
MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering,
College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Shanshan Wang
- Beijing National
Laboratory for Molecular Sciences,
MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering,
College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Chen Zhang
- Beijing National
Laboratory for Molecular Sciences,
MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering,
College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Xin Su
- Beijing National
Laboratory for Molecular Sciences,
MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering,
College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Shan Huang
- Beijing National
Laboratory for Molecular Sciences,
MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering,
College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Meiping Zhao
- Beijing National
Laboratory for Molecular Sciences,
MOE Key Laboratory of Bioorganic Chemistry and Molecular Engineering,
College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
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37
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Parsons JL, Dianov GL. Co-ordination of base excision repair and genome stability. DNA Repair (Amst) 2013; 12:326-33. [PMID: 23473643 DOI: 10.1016/j.dnarep.2013.02.001] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2013] [Accepted: 02/13/2013] [Indexed: 12/20/2022]
Abstract
Base excision repair (BER) is a major DNA repair pathway employed in mammalian cells that is required to maintain genome stability, thus preventing several human diseases, such as ageing, neurodegenerative diseases and cancer. This is achieved through the repair of damaged DNA bases, sites of base loss and single strand breaks of varying complexity that are continuously induced endogenously or via exogenous mutagens. Whilst the enzymes involved in BER are now well known and characterised, the role of the co-ordination of BER enzymatic activities in the cellular response to DNA damage and the mechanisms regulating this process are only now being revealed. Post-translational modifications of BER proteins, including ubiquitylation and phosphorylation, are increasingly being identified as key processes that regulate BER. In this review we will summarise recent evidence discovering novel mechanisms that are involved in maintaining genome stability by regulation of the key BER proteins in response to DNA damage.
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Affiliation(s)
- Jason L Parsons
- Department of Molecular and Clinical Cancer Medicine, Cancer Research Centre, University of Liverpool, 200 London Road, Liverpool, L3 9TA, UK
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38
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Su X, Xiao X, Zhang C, Zhao M. Nucleic acid fluorescent probes for biological sensing. APPLIED SPECTROSCOPY 2012; 66:1249-1262. [PMID: 23146180 DOI: 10.1366/12-06803] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Nucleic acid fluorescent probes are playing increasingly important roles in biological sensing in recent years. In addition to the conventional functions of single-stranded DNA/RNA to hybridize with their complementary strands, affinity nucleic acids (aptamers) with specific target binding properties have also been developed, which has greatly broadened the application of nucleic acid fluorescent probes to the detection of a large variety of analytes, including small molecules, proteins, ions, and even whole cells. Another chemical property of nucleic acids is to act as substrates for various nucleic acid enzymes. This property can be utilized not only to detect those enzymes and screen their inhibitors, but also employed to develop effective signal amplification systems, which implies extensive applications. This review mainly covers the biosensing methods based on the above three types of nucleic acid fluorescent probes. The most widely used intensity-based biosensing assays are covered first, including nucleic acid probe-based signal amplification methods. Then fluorescence lifetime, fluorescence anisotropy, and fluorescence correlation spectroscopy assays are introduced, respectively. As a rapidly developing field, fluorescence imaging approaches are also briefly summarized.
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Affiliation(s)
- Xin Su
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, China
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39
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Nikiforov TT. Fluorogenic substrates with single fluorophores for nucleic acid-modifying enzymes: design principles and new applications. Anal Biochem 2012; 424:142-8. [PMID: 22387388 DOI: 10.1016/j.ab.2012.02.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2012] [Revised: 02/17/2012] [Accepted: 02/22/2012] [Indexed: 12/13/2022]
Abstract
Nucleic acid-modifying enzymes are widely used in numerous applications. Many of these proteins are also important drug targets. Thus, better assays for the evaluation of their activities are always needed and are continuously being developed. Recently, I reported on a set of assays for several DNA-modifying enzymes (polymerases, endonucleases, and ligase) based on simple, hairpin-type oligonucleotide substrates labeled with a single fluorophore (Anal. Biochem. 412 (2011) 229-236). The present paper reports further studies on the mechanism of action of these substrates. It was assumed that the single fluorophore of these substrates is substantially quenched by stacking onto the terminal base(s) of the duplex, and that any perturbation of that stacking causes an increase in fluorescence. Based on this assumption, substrates of the same type for a variety of additional enzymes were developed and tested. The new assays described herein are for T4 polynucleotide kinase, the DNA repair enzymes uracil-DNA glycosylase (UDG) and formamido-pyrimidine-DNA glycosylase (FPG), 3'-5' exonucleases, and enzymes with template-independent terminal transferase activity such as Taq polymerase. All of these molecules are easy to synthesize, and similar substrates for other enzymes can rapidly be designed based on the principles outlined in this work.
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40
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Tahbaz N, Subedi S, Weinfeld M. Role of polynucleotide kinase/phosphatase in mitochondrial DNA repair. Nucleic Acids Res 2011; 40:3484-95. [PMID: 22210862 PMCID: PMC3333865 DOI: 10.1093/nar/gkr1245] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Mutations in mitochondrial DNA (mtDNA) are implicated in a broad range of human diseases and in aging. Compared to nuclear DNA, mtDNA is more highly exposed to oxidative damage due to its proximity to the respiratory chain and the lack of protection afforded by chromatin-associated proteins. While repair of oxidative damage to the bases in mtDNA through the base excision repair pathway has been well studied, the repair of oxidatively induced strand breaks in mtDNA has been less thoroughly examined. Polynucleotide kinase/phosphatase (PNKP) processes strand-break termini to render them chemically compatible for the subsequent action of DNA polymerases and ligases. Here, we demonstrate that functionally active full-length PNKP is present in mitochondria as well as nuclei. Downregulation of PNKP results in an accumulation of strand breaks in mtDNA of hydrogen peroxide-treated cells. Full restoration of repair of the H2O2-induced strand breaks in mitochondria requires both the kinase and phosphatase activities of PNKP. We also demonstrate that PNKP contains a mitochondrial-targeting signal close to the C-terminus of the protein. We further show that PNKP associates with the mitochondrial protein mitofilin. Interaction with mitofilin may serve to translocate PNKP into mitochondria.
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Affiliation(s)
- Nasser Tahbaz
- Department of Oncology, University of Alberta and Experimental Oncology, Cross Cancer Institute, 11560 University Avenue, Edmonton, Alberta, Canada, T6G 1Z2
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Zolner AE, Abdou I, Ye R, Mani RS, Fanta M, Yu Y, Douglas P, Tahbaz N, Fang S, Dobbs T, Wang C, Morrice N, Hendzel MJ, Weinfeld M, Lees-Miller SP. Phosphorylation of polynucleotide kinase/ phosphatase by DNA-dependent protein kinase and ataxia-telangiectasia mutated regulates its association with sites of DNA damage. Nucleic Acids Res 2011; 39:9224-37. [PMID: 21824916 PMCID: PMC3241656 DOI: 10.1093/nar/gkr647] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Human polynucleotide kinase/phosphatase (PNKP) is a dual specificity 5'-DNA kinase/3'-DNA phosphatase, with roles in base excision repair, DNA single-strand break repair and non-homologous end joining (NHEJ); yet precisely how PNKP functions in the repair of DNA double strand breaks (DSBs) remains unclear. We demonstrate that PNKP is phosphorylated by the DNA-dependent protein kinase (DNA-PK) and ataxia-telangiectasia mutated (ATM) in vitro. The major phosphorylation site for both kinases was serine 114, with serine 126 being a minor site. Ionizing radiation (IR)-induced phosphorylation of cellular PNKP on S114 was ATM dependent, whereas phosphorylation of PNKP on S126 required both ATM and DNA-PK. Inactivation of DNA-PK and/or ATM led to reduced PNKP at DNA damage sites in vivo. Cells expressing PNKP with alanine or aspartic acid at serines 114 and 126 were modestly radiosensitive and IR enhanced the association of PNKP with XRCC4 and DNA ligase IV; however, this interaction was not affected by mutation of PNKP phosphorylation sites. Purified PNKP protein with mutation of serines 114 and 126 had decreased DNA kinase and DNA phosphatase activities and reduced affinity for DNA in vitro. Together, our results reveal that IR-induced phosphorylation of PNKP by ATM and DNA-PK regulates PNKP function at DSBs.
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Affiliation(s)
- Angela E Zolner
- Department of Biochemistry and Molecular Biology, Southern Alberta Cancer Research Institute, University of Calgary, 3330 Hospital Drive NW, Calgary, Alberta T2N 4N1, Canada
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Tidying up loose ends: the role of polynucleotide kinase/phosphatase in DNA strand break repair. Trends Biochem Sci 2011; 36:262-71. [PMID: 21353781 DOI: 10.1016/j.tibs.2011.01.006] [Citation(s) in RCA: 138] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2010] [Revised: 01/26/2011] [Accepted: 01/27/2011] [Indexed: 01/09/2023]
Abstract
The termini of DNA strand breaks induced by internal and external factors often require processing before missing nucleotides can be replaced by DNA polymerases and the strands rejoined by DNA ligases. Polynucleotide kinase/phosphatase (PNKP) serves a crucial role in the repair of DNA strand breaks by catalyzing the restoration of 5'-phosphate and 3'-hydroxyl termini. It participates in several DNA repair pathways through interactions with other DNA repair proteins, notably XRCC1 and XRCC4. Recent studies have highlighted the physiological importance of PNKP in maintaining the genomic stability of normal tissues, particularly developing neural cells, as well as enhancing the resistance of cancer cells to genotoxic therapeutic agents.
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