151
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Chen Q, Lai C, Chen F, Ding Y, Zhou Y, Su S, Ni R, Tang Z. Emodin Protects SH-SY5Y Cells Against Zinc-Induced Synaptic Impairment and Oxidative Stress Through the ERK1/2 Pathway. Front Pharmacol 2022; 13:821521. [PMID: 35197857 PMCID: PMC8859424 DOI: 10.3389/fphar.2022.821521] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 01/20/2022] [Indexed: 11/30/2022] Open
Abstract
Zinc is an essential trace element important for the physiological function of the central nervous system. The abnormal accumulation of zinc inside neurons may induce mitochondrial dysfunction and oxidative stress, which contribute to many brain diseases. We hypothesized that natural anthraquinone derivative emodin can protect against neurotoxicity induced by pathological concentrations of zinc via the extracellular signal-regulated kinase 1/2 (ERK1/2) signaling pathway and alleviate oxidative stress and mitochondrial dysfunction. Human neuroblastoma (SH-SY5Y 26 cells) was treated with zinc sulfate and different concentrations of emodin, and changes in the levels of ETK1/2 expression, oxidative stress (DCFH-DA staining), mitochondrial function (JC-1 staining), lipid peroxidation (4-hydroxynonenal staining), and DNA oxidation (8-hydroxy-2-deoxyguanosine staining) were examined. Emodin ameliorated zinc-induced altered expression of levels of phosphorylated ERK1/2 (not total ETK1/2) and synaptic proteins (presynaptic SNAP 25, synaptophysin and postsynaptic PSD95) in SH-SY5Y cells. Moreover, emodin inhibited the generation of reactive oxygen species and oxidative stress and facilitated the collapse of mitochondrial membrane potential (ΔΨm) in SH-SY5Y cells. In conclusion, our results indicated that emodin exerts neuroprotective effects against zinc by normalizing synaptic impairment by decreasing the phosphorylation of ERK1/2, reducing reactive oxygen species and protecting mitochondrial function.
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Affiliation(s)
- Qian Chen
- Department of Obstetrics, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, China
- Clinical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Chencen Lai
- Preparation Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Fa Chen
- Clinical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, China
- Department of Miao Medicine, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Yuanting Ding
- Clinical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Yiyuan Zhou
- Department of Obstetrics, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Songbai Su
- Preparation Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Ruiqing Ni
- Institute for Regenerative Medicine, University of Zurich, Zurich, Switzerland
- Institute for Biomedical Engineering, ETH Zurich and University of Zurich, Zurich, Switzerland
- *Correspondence: Ruiqing Ni, ; Zhi Tang,
| | - Zhi Tang
- Clinical Research Center, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang, China
- Key Laboratory of Endemic and Ethnic Diseases, Ministry of Education and Key Laboratory of Medical Molecular Biology of Guizhou Province, Guizhou Medical University, Guiyang, China
- *Correspondence: Ruiqing Ni, ; Zhi Tang,
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152
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Synthesis, spectrophotometric, spectroscopic, microbial studies and analytical applications of Cu(II) and Zn(II) complexes of chalcone ligand. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-021-01916-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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153
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Toczylowska B, Zieminska E, Podlecka-Pietowska A, Ruszczynska A, Chalimoniuk M. Serum metabolic profiles and metal levels of patients with multiple sclerosis and patients with neuromyelitis optica spectrum disorders - NMR spectroscopy and ICP–MS studies. Mult Scler Relat Disord 2022; 60:103672. [DOI: 10.1016/j.msard.2022.103672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 01/24/2022] [Accepted: 02/05/2022] [Indexed: 11/29/2022]
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154
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Kargar H, Fallah-Mehrjardi M, Behjatmanesh-Ardakani R, Amiri Rudbari H, Adabi Ardakani A, Sedighi-Khavidak S, Munawar KS, Ashfaq M, Tahir MN. Synthesis, spectral characterization, crystal structures, biological activities, theoretical calculations and substitution effect of salicylidene ligand on the nature of mono and dinuclear Zn(II) Schiff base complexes. Polyhedron 2022. [DOI: 10.1016/j.poly.2021.115636] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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155
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Yu X, Wang Z, Li YV. Metal ion chelation enhances tissue plasminogen activator (tPA)-induced thrombolysis: an in vitro and in vivo study. J Thromb Thrombolysis 2022; 53:291-301. [PMID: 34757546 PMCID: PMC8904301 DOI: 10.1007/s11239-021-02600-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/28/2021] [Indexed: 02/03/2023]
Abstract
Stroke is the third leading cause of death in the United States and the leading cause of adult disability. Despite enormous research efforts including many clinical trials, tissue plasminogen activator (tPA) remains the only FDA-approved treatment for acute ischemic stroke. Unfortunately, only 1-3% of stroke patients in the US receive this therapy because of the narrow time window and severe side effects for using tPA. The most deadly and damaging side effect is the risk of intracranial bleeding or hemorrhage. For that reason, the dose of tPA and its overall administration are under tight control, which may compromise the effect of thrombolysis. Studies have been focused on improving the effectiveness of tPA for higher rate of reperfusion, and the safety for less adverse bleeding episode. We studied how metal ions (zinc & iron) affect tPA-induced thrombolysis in vitro and in vivo, and proposed a method to improve the rate of thrombolysis. The amount of hemoglobin in the blood clot lysis was measured by a spectrophotometer. The tPA-induced thrombolysis was measured in vivo in femoral artery. Our results showed that Zn2+, Fe3+ and Fe2+ inhibited tPA-induced thrombolysis, with Zn2+ and Fe2+ being the most effective. Metal ion chelating agent EDTA when it was co-applied with tPA significantly enhanced the tPA-induced thrombolysis. The chelation alone did not have noticeable thrombolytic effect. In in vivo study of tPA-induced thrombosis following femoral artery thrombosis, the co-application of tPA and EDTA achieved significant higher rate of reperfusion than that by tPA treatment alone, suggesting that ion chelation facilitates tPA-induced thrombolysis and potentially improves the safety of tPA application by reducing the necessary dose of tPA application. Our results suggest that the co-application of a chelator and tPA improves the efficacy and, potentially, safety of tPA application, by reducing the necessary dose of tPA for thrombolysis.
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Affiliation(s)
- Xinge Yu
- Department of Biological Science, Heritage College of Osteopathic Medicine, Ohio University, Athens Ohio, USA,Department of Biomedical Science, Heritage College of Osteopathic Medicine, Ohio University, Athens Ohio, USA
| | - Zihui Wang
- Department of Biological Science, Heritage College of Osteopathic Medicine, Ohio University, Athens Ohio, USA,Department of Biomedical Science, Heritage College of Osteopathic Medicine, Ohio University, Athens Ohio, USA
| | - Yang V Li
- Department of Biomedical Science, Heritage College of Osteopathic Medicine, Ohio University, Athens Ohio, USA
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156
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Zhou J, Li J, Zhang KY, Liu S, Zhao Q. Phosphorescent iridium(III) complexes as lifetime-based biological sensors for photoluminescence lifetime imaging microscopy. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214334] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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157
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Mesa-Herrera F, Marín R, Torrealba E, Díaz M. Multivariate Assessment of Lipoxidative Metabolites, Trace Biometals, and Antioxidant and Detoxifying Activities in the Cerebrospinal Fluid Define a Fingerprint of Preclinical Stages of Alzheimer’s Disease. J Alzheimers Dis 2022; 86:387-402. [DOI: 10.3233/jad-215437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Background: There exists considerable interest in the identification of molecular traits during early stages of Alzheimer’s disease (AD). Mild cognitive impairment (MCI) is considered the closest prodromal stage of AD, and to develop gradually from earlier stages although not always progresses to AD. Classical cerebrospinal fluid (CSF) AD biomarkers, amyloid-β peptides and tau/p-tau proteins, have been measured in prodromal stages yet results are heterogeneous and far from conclusive. Therefore, there exists a pressing need to identify a neurochemical signature for prodromal stages and to predict which cases might progress to AD. Objective: Exploring potential CSF biomarkers related to brain oxidative and inorganic biochemistry during prodromal stages of the disease. Methods: We have analyzed CSF levels of lipoxidative markers (MDA and 8-isoF2α), biometals (Cu, Zn, Se, Mn, and Fe), iron-transport protein transferrin (TFER), antioxidant enzymes (SOD and GPx4), detoxifying enzymes (GST and BuChE), as well as classical amyloid-β and total and phosphorylated tau, in cognitively healthy controls, patients with MCI, and subjects exhibiting subjective memory complaints (SMC). Results: Inter-group differences for several variables exhibit differentiable trends along the HC ⟶ SMC ⟶ MCI sequence. More interestingly, the combination of Se, Cu, Zn, SOD, TFER, and GST variables allow differentiable fingerprints for control subjects and each prodromal stage. Further, multivariate scores correlate positively with neurocognitive In-Out test, hence with both episodic memory decline and prediction to dementia. Conclusion: We conclude that changes in the CSF biochemistry related to brain oxidative defense and neurometallomics might provide more powerful and accurate diagnostic tools in preclinical stages of AD.
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Affiliation(s)
- Fátima Mesa-Herrera
- Laboratory of Membrane Physiology and Biophysics, Department of Animal Biology, Edaphology and Geology, Biology Section, Science School, Universidad de La Laguna, Spain
| | - Raquel Marín
- Laboratory of Cellular Neurobiology, Department of Basic Medical Sciences, Health Sciences School, Universidad de La Laguna, Spain
- Associate Research Unit ULL-CSIC Membrane Physiology and Biophysics in Neurodegenerative and Cancer Diseases, University of La Laguna, Tenerife, Spain
| | - Eduardo Torrealba
- Department of Neurology, Hospital Universitario de Gran Canaria Dr. Negrín, Las Palmas de Gran Canaria, Spain
| | - Mario Díaz
- Department of Physics, Faculty of Sciences, Universidad de La Laguna, Spain
- IUETSP (Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias), Universidad de La Laguna, Spain
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158
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Lin S, Zhao HS, Xu C, Zhou ZP, Wang DH, Chen SR, Mei XF. Bioengineered Zinc Oxide Nanoparticle-Loaded Hydrogel for Combinative Treatment of Spinal Cord Transection. Front Bioeng Biotechnol 2022; 9:796361. [PMID: 35096792 PMCID: PMC8793849 DOI: 10.3389/fbioe.2021.796361] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Accepted: 12/01/2021] [Indexed: 12/28/2022] Open
Abstract
Spinal cord injury (SCI) is one of the most destructive diseases. The neuroinflammation microenvironment needs comprehensive mitigation of damages. Thus, regulation of local, microenvironment drugs could be a potential effective treatment. However, clinical studies on SCI with common treatment have reported it to cause systemic toxicity and side effects. Zinc oxide nanoparticles (ZnONPs) have been widely reported to have satisfying anti-inflammation function. Furthermore, green synthesis procedures can improve the capability and possible utilization of ZnONPs. However, the efficient administration and underlying mechanism of ZnONPs in SCI treatment remain unclear. Herein, an innovative approach was built by utilizing ZnONPs loaded in a skeletal muscle-derived adhesive hydrogel (ZnONPs-Gel). Different from the systemic application of ZnONPs, the local administration of ZnONPs-Gel offered the ZnONPs-loaded extracellular matrix with beneficial biocompatibility to the injured spinal cord, thereby promoting effective function recovery. Mechanistically, the ZnONPs-Gel treatment not only markedly reduced ROS production but also decreased apoptosis in the injured spinal cord. Therefore, the strategy based on local administration of the ZnONPs-Gel in the early stage of SCI may be an effective therapeutic treatment.
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Affiliation(s)
- Sen Lin
- Department of Orthopedic, First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Hao-sen Zhao
- Department of Orthopedic, First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Chang Xu
- Department of Orthopedic, First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Zi-peng Zhou
- Department of Orthopedic, First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Da-hao Wang
- Department of Orthopedic, First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
| | - Shu-rui Chen
- Department of Endocrinology, First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
- *Correspondence: Shu-rui Chen, ; Xi-fan Mei,
| | - Xi-fan Mei
- Department of Orthopedic, First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China
- *Correspondence: Shu-rui Chen, ; Xi-fan Mei,
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159
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Jonsson BH, Orhan F, Bruno S, Oliveira AO, Sparding T, Landen M, Sellgren CM. Serum concentration of zinc is elevated in clinically stable bipolar disorder patients. Brain Behav 2022; 12:e2472. [PMID: 34967503 PMCID: PMC8785612 DOI: 10.1002/brb3.2472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Revised: 11/06/2021] [Accepted: 12/01/2021] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND Bipolar disorder (BD) is a chronic psychiatric disorder characterized by recurrent mood episodes interspersed with euthymic periods. A growing number of studies have indicated that zinc plays an important role in coordinating immune responses, as well as being involved in synaptic transmission. In the current study, we set out to measure serum levels of zinc in a meticulously phenotyped cohort of 121 euthymic BD subjects and 30 matched controls. METHODS Serum levels of zinc were measured by photometry. To assess the interplay between zinc levels and immune activation in BD, we measured serum levels of high-sensitive C-reactive protein (hsCRP) levels by immunoturbidimetric assay, and serum levels of monocyte chemoattractant protein-1 (MCP-1), chitinase 3-like protein 1 (YKL-40), and soluble cluster of differentiation 14 (sCD14) by electrochemiluminescence enzyme-linked immunosorbent assays. The baseline clinical diagnostic instrument for BD was the Affective Disorder Evaluation, and executive functioning was assessed by using the Delis-Kaplan Executive Function System. RESULTS Controlling for potential confounding factors, BD patients displayed increased serum levels of zinc unrelated to hsCRP, MCP-1, YKL-40, and sCD14 levels. Serum levels of zinc did not associate with executive functioning or measurements of disease severity. DISCUSSION This study suggests that the zinc homeostasis is disturbed in BD and that this dyshomeostasis is not related to ongoing mood symptoms or immune activation. Of note, serum levels were increased and hence do not support continuous zinc supplementation in BD.
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Affiliation(s)
- Bo H Jonsson
- Department of Clinical Neuroscience, Centre for Psychiatry Research, Stockholm & Stockholm Health Care Services, Stockholm County Council, Karolinska Institutet, Stockholm, Sweden
| | - Funda Orhan
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Sanna Bruno
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Ana Osório Oliveira
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Timea Sparding
- Section of Psychiatry and Neurochemistry, The Sahlgrenska Academy at University of Gothenburg, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Mikael Landen
- Section of Psychiatry and Neurochemistry, The Sahlgrenska Academy at University of Gothenburg, Sahlgrenska University Hospital, Gothenburg, Sweden.,Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Carl M Sellgren
- Department of Clinical Neuroscience, Centre for Psychiatry Research, Stockholm & Stockholm Health Care Services, Stockholm County Council, Karolinska Institutet, Stockholm, Sweden.,Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
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160
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Ishikawa Y, Itoh R, Tsujimoto R, Tamano H, Takeda A. Isoproterenol injected into the basolateral amygdala rescues amyloid β 1-42-induced conditioned fear memory deficit via reducing intracellular Zn 2+ toxicity. Neurosci Lett 2022; 766:136353. [PMID: 34793899 DOI: 10.1016/j.neulet.2021.136353] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 11/08/2021] [Accepted: 11/11/2021] [Indexed: 12/20/2022]
Abstract
On the basis of amyloid β (Aβ) peptides as triggers in atrophy of structures in the limbic system, here we postulated that Aβ1-42-induced intracellular Zn2+ toxicity in the basolateral amygdala contributes to conditioned fear memory. Aβ1-42 increased intracellular Zn2+ level in the amygdala after local injection of Aβ1-42 into the basolateral amygdala, resulting in conditioned fear memory deficit via attenuated LTP at perforant pathway-basolateral amygdala synapses. Co-injection of isoproterenol, a beta-adrenergic receptor agonist, reduced Aβ1-42-mediated increase in intracellular Zn2+, resulting in rescue of the memory deficit and attenuated LTP. The present study suggests that beta-adrenergic activity induced by isoproterenol in the basolateral amygdala rescues the impairment of conditioned fear memory by Aβ1-42. The rescuing effect may be linked with reducing Aβ1-42-induced intracellular Zn2+ toxicity. Furthermore, Aβ1-42 injection into the basolateral amygdala also attenuated LTP at perforant pathway-dentate granule cell synapses, while co-injection of isoproterenol rescued it, suggesting that Aβ1-42 toxicity in the basolateral amygdala also affects hippocampus-dependent memory. It is likely that beta-adrenergic receptor activation in the basolateral amygdala rescues the limbic system exposed to Aβ1-42 toxicity.
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Affiliation(s)
- Yudai Ishikawa
- Department of Neurophysiology, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Ryusei Itoh
- Department of Neurophysiology, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Rin Tsujimoto
- Department of Neurophysiology, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Haruna Tamano
- Department of Neurophysiology, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Atsushi Takeda
- Department of Neurophysiology, School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan.
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161
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Ghodsi SM, Walz M, Schneider T, Todorovic SM. L-cysteine modulates visceral nociception mediated by the Ca V2.3 R-type calcium channels. Pflugers Arch 2022; 474:435-445. [PMID: 35267086 PMCID: PMC8924140 DOI: 10.1007/s00424-022-02674-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 02/16/2022] [Accepted: 02/17/2022] [Indexed: 10/27/2022]
Abstract
CaV2.3 channels are subthreshold voltage-gated calcium channels that play crucial roles in neurotransmitter release and regulation of membrane excitability, yet modulation of these channels with endogenous molecules and their role in pain processing is not well studied. Here, we hypothesized that an endogenous amino acid l-cysteine could be a modulator of these channels and may affect pain processing in mice. To test this hypothesis, we employed conventional patch-clamp technique in the whole-cell configuration using recombinant CaV2.3 subunit stably expressed in human embryonic kidney (HEK-293) cells. We found in our in vitro experiments that l-cysteine facilitated gating and increased the amplitudes of recombinant CaV2.3 currents likely by chelating trace metals that tonically inhibit the channel. In addition, we took advantage of mouse genetics in vivo using the acetic acid visceral pain model that was performed on wildtype and homozygous Cacna1e knockout male littermates. In ensuing in vivo experiments, we found that l-cysteine administered both subcutaneously and intraperitoneally evoked more prominent pain responses in the wildtype mice, while the effect was completely abolished in knockout mice. Conversely, intrathecal administration of l-cysteine lowered visceral pain response in the wildtype mice, and again the effect was completely abolished in the knockout mice. Our study strongly suggests that l-cysteine-mediated modulation of CaV2.3 channels plays an important role in visceral pain processing. Furthermore, our data are consistent with the contrasting roles of CaV2.3 channels in mediating visceral nociception in the peripheral and central pain pathways.
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Affiliation(s)
- Seyed Mohammadreza Ghodsi
- grid.430503.10000 0001 0703 675XDepartment of Anesthesiology, University of Colorado, CO Aurora, USA
| | - MacKenzie Walz
- grid.430503.10000 0001 0703 675XDepartment of Anesthesiology, University of Colorado, CO Aurora, USA
| | | | - Slobodan M. Todorovic
- grid.430503.10000 0001 0703 675XDepartment of Anesthesiology, University of Colorado, CO Aurora, USA ,grid.430503.10000 0001 0703 675XNeuroscience Graduate Program University of Colorado Anschutz Medical Campus, Aurora, CO 80045 USA
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162
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Paul S, Maity S, Halder S, Dutta B, Jana S, Jana K, Sinha C. Idiosyncratic recognition of Zn2+ and CN- using Pyrazolyl-Hydroxy-Coumarin scaffold and live cell imaging: Depiction of Luminescent Zn(II)-Metallocryptand. Dalton Trans 2022; 51:3198-3212. [DOI: 10.1039/d1dt03654h] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Multi-responsive sensitive and selective sensor design is one of the stimulating researches in sensor field. We have designed a pyrazolyl-hydroxy-coumarin scaffold, 7-hydroxy-4-methyl-8-(((5-phenyl-1H-pyrazol-3-yl)imino)methyl)-2H-chromen-2-one (H2L) and characterized by spectroscopic data (1H-NMR,13C-NMR, ESI-MS,...
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163
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Naskar B, Das Mukhopadhyay C, Goswami S. A new diformyl phenol based chemosensor selectively detects Zn 2+ and Co 2+ in the nanomolar range in 100% aqueous medium and HCT live cells. NEW J CHEM 2022. [DOI: 10.1039/d2nj01478e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new diformyl phenol based chemosensor that can sense Zn2+ and Co2+ in the nanomolar range in 100% aqueous solution and in HCT cells was explored.
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Affiliation(s)
- Barnali Naskar
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700009, India
- Department of Chemistry, Lalbaba College, University of Calcutta, Howrah 711202, India
| | - Chitrangada Das Mukhopadhyay
- Centre for Healthcare Science & Technology, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711103, India
| | - Sanchita Goswami
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata 700009, India
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164
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Das P, Singh Rajput S, Das M, Laha S, Choudhuri I, Bhattacharyya N, Das A, Chandra Samanta B, Mehboob Alam M, Maity T. Easy, Selective and Colorimetric Detection of Zn(II), Cu(II), F- Ions by a New Piperazine Based Schiff Base Chemosensor along with Molecular Logic Gate Formation and Live Cell Images Study. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.113817] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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165
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Marchetti MF, Silva GMD, Freiria CN, Borim FSA, Brito TRPD, Milanski M, Corona LP. Association between zinc deficiency and cognitive decline in community-dwelling older adults. CIENCIA & SAUDE COLETIVA 2022. [DOI: 10.1590/1413-81232022277.19932021en] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Abstract This is a cross-sectional study evaluating the association between zinc deficiency and cognitive decline in 591 community-dwelling older adults living in the cities of Campinas, Limeira, and Piracicaba-SP. Cognitive status was evaluated using the Cognitive Abilities Screening Instrument-CASI-S, considering a decline for scores <23 for those aged 60-69 and <20 for those aged ≥70 years. Among the evaluated cognitive domains, older adults with zinc deficiency had significantly lower mean scores on the memory test (p=0.018). For zinc deficiency, values below 70 µg/dL were considered for women and 74 µg/dL for men. The prevalence of zinc deficiency was 3.9%, and cognitive deficit was 9.4%, being significantly higher in those with zinc deficiency compared with those with normal serum zinc concentrations. In adjusted multiple logistic regression analysis, the factors that remained associated with cognitive decline were zinc deficiency (OR=3.80; 95%CI=1.30-11.12), low schooling level (OR=3.12; 95%CI=1.49-6.50), lack of a partner (OR=1.88; 95%CI=1.04-3.42), risk of malnutrition (OR=3.98; 95%CI=2.36-6.71), and a history of encephalic vascular accident (OR=2.70; 95%CI=1.04-6.98). Zinc deficiency was associated with the presence of cognitive decline in older adults. Actions in primary health care are necessary to prevent the deficiency of this nutrient.
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166
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Fernandes RS, Shetty NS, Mahesha P, Gaonkar SL. A Comprehensive Review on Thiophene Based Chemosensors. J Fluoresc 2022; 32:19-56. [PMID: 34623559 PMCID: PMC8755703 DOI: 10.1007/s10895-021-02833-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 09/27/2021] [Indexed: 11/28/2022]
Abstract
The recognition and sensing of various analytes in aqueous and biological systems by using fluorometric or colorimetric chemosensors possessing high selectivity and sensitivity, low cost has gained enormous attention. Furthermore, thiophene derivatives possess exceptional photophysical properties compared to other heterocycles, and therefore they can be employed in chemosensors for analyte detection. In this review, we have tried to explore the design and detection mechanism of various thiophene-based probes, practical applicability, and their advanced models (design guides), which could be thoughtful for the synthesis of new thiophene-based probes. This review provides an insight into the reported chemosensors (2008-2020) for thiophene scaffold as effective emission and absorption-based chemosensors.
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Affiliation(s)
- Rikitha S Fernandes
- Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, 576104, Manipal, Karnataka, India
| | - Nitinkumar S Shetty
- Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, 576104, Manipal, Karnataka, India.
| | - Priyanka Mahesha
- Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, 576104, Manipal, Karnataka, India
| | - Santhosh L Gaonkar
- Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, 576104, Manipal, Karnataka, India
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Yang T, Guo R, Ofengeim D, Hwang JY, Zukin RS, Chen J, Zhang F. Molecular and Cellular Mechanisms of Ischemia-Induced Neuronal Death. Stroke 2022. [DOI: 10.1016/b978-0-323-69424-7.00005-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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168
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Mardina Z, Venezuela J, Maher C, Shi Z, Dargusch M, Atrens A. Design, mechanical and degradation requirements of biodegradable metal mesh for pelvic floor reconstruction. Biomater Sci 2022; 10:3371-3392. [DOI: 10.1039/d2bm00179a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pelvic organ prolapse (POP) is the herniation of surrounding tissue and organs into the vagina and or rectum, and is a result of weakening of pelvic floor muscles, connective tissue,...
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169
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Cusick SE, Barks A, Georgieff MK. Nutrition and Brain Development. Curr Top Behav Neurosci 2022; 53:131-165. [PMID: 34622395 DOI: 10.1007/7854_2021_244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
All nutrients are essential for brain development, but pre-clinical and clinical studies have revealed sensitive periods of brain development during which key nutrients are critical. An understanding of these nutrient-specific sensitive periods and the accompanying brain regions or processes that are developing can guide effective nutrition interventions as well as the choice of meaningful circuit-specific neurobehavioral tests to best determine outcome. For several nutrients including protein, iron, iodine, and choline, pre-clinical and clinical studies align to identify the same sensitive periods, while for other nutrients, such as long-chain polyunsaturated fatty acids, zinc, and vitamin D, pre-clinical models demonstrate benefit which is not consistently shown in clinical studies. This discordance of pre-clinical and clinical results is potentially due to key differences in the timing, dose, and/or duration of the nutritional intervention as well as the pre-existing nutritional status of the target population. In general, however, the optimal window of success for nutritional intervention to best support brain development is in late fetal and early postnatal life. Lack of essential nutrients during these times can lead to long-lasting dysfunction and significant loss of developmental potential.
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Affiliation(s)
- Sarah E Cusick
- Department of Pediatrics, University of Minnesota School of Medicine, Minneapolis, MN, USA.
| | - Amanda Barks
- University of Minnesota Medical School, Minneapolis, MN, USA
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170
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Yuan W, Xia D, Wu S, Zheng Y, Guan Z, Rau JV. A review on current research status of the surface modification of Zn-based biodegradable metals. Bioact Mater 2022; 7:192-216. [PMID: 34466727 PMCID: PMC8379348 DOI: 10.1016/j.bioactmat.2021.05.018] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 05/09/2021] [Accepted: 05/09/2021] [Indexed: 12/13/2022] Open
Abstract
Recently, zinc and its alloys have been proposed as promising candidates for biodegradable metals (BMs), owning to their preferable corrosion behavior and acceptable biocompatibility in cardiovascular, bone and gastrointestinal environments, together with Mg-based and Fe-based BMs. However, there is the desire for surface treatment for Zn-based BMs to better control their biodegradation behavior. Firstly, the implantation of some Zn-based BMs in cardiovascular environment exhibited intimal activation with mild inflammation. Secondly, for orthopedic applications, the biodegradation rates of Zn-based BMs are relatively slow, resulting in a long-term retention after fulfilling their mission. Meanwhile, excessive Zn2+ release during degradation will cause in vitro cytotoxicity and in vivo delayed osseointegration. In this review, we firstly summarized the current surface modification methods of Zn-based alloys for the industrial applications. Then we comprehensively summarized the recent progress of biomedical bulk Zn-based BMs as well as the corresponding surface modification strategies. Last but not least, the future perspectives towards the design of surface bio-functionalized coatings on Zn-based BMs for orthopedic and cardiovascular applications were also briefly proposed.
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Affiliation(s)
- Wei Yuan
- School of Materials Science and Engineering, Peking University, Beijing, 100871, China
| | - Dandan Xia
- School of Materials Science and Engineering, Peking University, Beijing, 100871, China
- National Engineering Laboratory for Digital and Material Technology of Stomatology, National Clinical Research Center for Oral Diseases, Beijing Key Laboratory of Digital Stomatology, National Medical Products Administration Key Laboratory for Dental Materials, Research Center of Engineering and Technology for Digital Dentistry, Ministry of Health, Beijing, 100081, China
| | - Shuilin Wu
- School of Materials Science & Engineering, The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, Tianjin University, Tianjin, 300072, China
| | - Yufeng Zheng
- School of Materials Science and Engineering, Peking University, Beijing, 100871, China
- National Engineering Laboratory for Digital and Material Technology of Stomatology, National Clinical Research Center for Oral Diseases, Beijing Key Laboratory of Digital Stomatology, National Medical Products Administration Key Laboratory for Dental Materials, Research Center of Engineering and Technology for Digital Dentistry, Ministry of Health, Beijing, 100081, China
| | - Zhenpeng Guan
- Orthopedics Department, Peking University Shougang Hospital, No. 9 Jinyuanzhuang Rd, Shijingshan District, Beijing, 100144, China
| | - Julietta V. Rau
- Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche (ISM-CNR), Via del Fosso del Cavaliere, 100-00133, Rome, Italy
- Sechenov First Moscow State Medical University, Institute of Pharmacy, Department of Analytical, Physical and Colloid Chemistry, Trubetskaya 8, build. 2, 119991, Moscow, Russia
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171
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Bag R, Sikdar Y, Sahu S, Islam MM, Mandal S, Goswami S. Benzimidazole–acid hydrazide Schiff–Mannich combo ligands enable nano–molar detection of Zn 2+ via fluorescence turn–on mode from semi–aqueous medium, HuH–7 cells, and plants. NEW J CHEM 2022. [DOI: 10.1039/d2nj02875a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we have synthesized two unsymmetrical and dipodal Schiff–Mannich combo ligands, benzoic acid (3–benzoimidazol–1–ylmethyl–2–hydroxy–5–methyl–benzylidene)–hydrazide (H2BBH) and the hydroxyl analogue, 2–hydroxy–benzoic acid (3–benzoimidazol–1–ylmethyl–2–hydroxy–5–methyl–benzylidene)–hydrazide (H3BSH) for selective detection of Zn2+ in semi–aqueous...
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172
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Singh G, Devi A, Mohit, Diksha, Suman, Saini A, Kaur JD, Gupta S, Vikas. Synthesis, “turn-on” fluorescence signals towards Zn 2+ and Hg 2+ and monoamine oxidase A inhibitory activity using a molecular docking approach of morpholine analogue Schiff base linked organosilanes. NEW J CHEM 2022. [DOI: 10.1039/d2nj03767j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A new set of morpholine analogue Schiff base linked organosilanes (5a–5c) was prepared.
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Affiliation(s)
- Gurjaspreet Singh
- Department of Chemistry & Centre of Advanced Studies, Panjab University, Chandigarh, 160014, India
| | - Anita Devi
- Department of Chemistry & Centre of Advanced Studies, Panjab University, Chandigarh, 160014, India
| | - Mohit
- Department of Chemistry & Centre of Advanced Studies, Panjab University, Chandigarh, 160014, India
| | - Diksha
- Department of Chemistry & Centre of Advanced Studies, Panjab University, Chandigarh, 160014, India
| | - Suman
- Department of Chemistry & Centre of Advanced Studies, Panjab University, Chandigarh, 160014, India
| | - Anamika Saini
- Department of Chemistry & Centre of Advanced Studies, Panjab University, Chandigarh, 160014, India
| | - Jashan Deep Kaur
- Department of Chemistry & Centre of Advanced Studies, Panjab University, Chandigarh, 160014, India
| | - Sofia Gupta
- Department of Chemistry & Centre of Advanced Studies, Panjab University, Chandigarh, 160014, India
| | - Vikas
- Department of Chemistry & Centre of Advanced Studies, Panjab University, Chandigarh, 160014, India
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173
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Ellison G, Hollings AL, Hackett MJ. A review of the “metallome” within neurons and glia, as revealed by elemental mapping of brain tissue. BBA ADVANCES 2022; 2:100038. [PMID: 37082604 PMCID: PMC10074908 DOI: 10.1016/j.bbadva.2021.100038] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 12/16/2021] [Accepted: 12/17/2021] [Indexed: 01/01/2023] Open
Abstract
It is now well established that transition metals, such as Iron (Fe), Copper (Cu), and Zinc (Zn) are necessary for healthy brain function. Although Fe, Cu, and Zn are essential to the brain, imbalances in the amount, distribution, or chemical form ("metallome") of these metals is linked to the pathology of numerous brain diseases or disorders. Despite the known importance of metal ions for both brain health and disease, the metallome that exists within specific types of brain cells is yet to be fully characterised. The aim of this mini-review is to present an overview of the current knowledge of the metallome found within specific brain cells (oligodendrocytes, astrocytes, microglia, and neurons), as revealed by direct elemental mapping techniques. It is hoped this review will foster continued research using direct elemental mapping techniques to fully characterise the brain cell metallome.
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Affiliation(s)
- Gaewyn Ellison
- School of Molecular and Life Sciences, Curtin University, Perth, WA 6845, Australia
- Curtin Health Innovation Research Institute, Curtin University, Perth, WA 6102, Australia
| | - Ashley L. Hollings
- School of Molecular and Life Sciences, Curtin University, Perth, WA 6845, Australia
- Curtin Health Innovation Research Institute, Curtin University, Perth, WA 6102, Australia
| | - Mark J. Hackett
- School of Molecular and Life Sciences, Curtin University, Perth, WA 6845, Australia
- Curtin Health Innovation Research Institute, Curtin University, Perth, WA 6102, Australia
- Corresponding author.
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174
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Folarin OR, Olopade FE, Olopade JO. Essential Metals in the Brain and the Application of Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry for their Detection. Niger J Physiol Sci 2021; 36:123-147. [PMID: 35947740 DOI: 10.54548/njps.v36i2.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 01/05/2022] [Indexed: 06/15/2023]
Abstract
Metals are natural component of the ecosystem present throughout the layers of atmosphere; their abundant expression in the brain indicates their importance in the central nervous system (CNS). Within the brain tissue, their distribution is highly compartmentalized, the pattern of which is determined by their primary roles. Bio-imaging of the brain to reveal spatial distribution of metals within specific regions has provided a unique understanding of brain biochemistry and architecture, linking both the structures and the functions through several metal mediated activities. Bioavailability of essential trace metal is needed for normal brain function. However, disrupted metal homeostasis can influence several biochemical pathways in different fields of metabolism and cause characteristic neurological disorders with a typical disease process usually linked with aberrant metal accumulations. In this review we give a brief overview of roles of key essential metals (Iron, Copper and Zinc) including their molecular mechanisms and bio-distribution in the brain as well as their possible involvement in the pathogenesis of related neurodegenerative diseases. In addition, we also reviewed recent applications of Laser Ablation Inductively Couple Plasma Mass Spectrophotometry (LA-ICP-MS) in the detection of both toxic and essential metal dyshomeostasis in neuroscience research and other related brain diseases.
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175
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Xie Y, Yu L, Fu Y, Sun H, Wang J. Evaluating effect of metallic ions on aggregation behavior of β-amyloid peptides by atomic force microscope and surface-enhanced Raman Scattering. Biomed Eng Online 2021; 20:132. [PMID: 34969380 PMCID: PMC8717674 DOI: 10.1186/s12938-021-00972-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 12/21/2021] [Indexed: 11/10/2022] Open
Abstract
Background Excessive aggregation of β-amyloid peptides (Aβ) is regarded as the hallmark of Alzheimer’s disease. Exploring the underlying mechanism regulating Aβ aggregation remains challenging and investigating aggregation events of Aβ in the presence and absence of metallic ions at molecular level would be meaningful in elucidating the role of metal cations on interactions between Aβ molecules. In this study, chemical self-assembled monolayer (SAM) method was employed to fabricate monolayer of β-amyloid peptides Aβ42 on gold substrate with a bolaamphiphile named 16-Mercaptohexadecanoic acid (MHA). Firstly, the samples of gold substrate (blank control), the MHA-modified substrate, and the Aβ42-modified substrate were detected by X-ray photoelectron spectroscopy (XPS) to track the self-assembly process. Aggregation behaviors of Aβ42 before and after metallic ions (Zn2+, Ca2+, Al3+) treatment were monitored by atomic force microscopy (AFM) and the interaction between Aβ42 and metallic ions (Zn2+, Ca2+, Al3+) was investigated by surface-enhanced Raman Scattering (SERS). Results The XPS spectra of binding energy of gold substrate (blank control), the MHA-modified substrate, and the Aβ42-modified substrate are well fitted with the corresponding monolayer’s composition, which indicates that Aβ42 monolayer is well formed. The recorded surface morphology of different experimental groups obtained by AFM showed markedly different nanostructures, indicating occurrence of aggregation events between Aβ42 molecules after adding metal ions to the solution. Compared to the control group, the presence of metallic ions resulted in the increased size of surface structures on the observed 3D topography. Besides, the intermolecular rupture force of Aβ42 increased with the addition of metallic ions. Further study by SERS showed that the Raman strength of Aβ42 changes significantly after the metal cation treatment. A considerable part of the amide bonds interacts with metal cations, leading to a structural change, which is characterized by the weakened β-fold Raman peak. Conclusion The AFM imaging results suggest that aggregation events occurred between Aβ42 molecules with the addition of metal cations. In addition, the results of force tests indicate that the presence of metallic ions could promote adhesion between Aβ42 molecules, which is likely to be the trigger for aggregation behavior of Aβ42. Furthermore, the effect of metallic cations on the conformational change of Aβ42 studied by SERS supported the results obtained by AFM. Taken together, the results showed that the presence of substoichiometric metal cations promotes aggregation behavior between Aβ42 molecules on the substrate at pH 7.4.
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Affiliation(s)
- Yang Xie
- Pharmaceutical Engineering Center, Chongqing Medical and Pharmaceutical College, Chongqing, 401331, China.,Key Laboratory of Biorheological Science and Technology, Ministry of Education, and Institute of Biochemistry and Biophysics, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Lin Yu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, and Institute of Biochemistry and Biophysics, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Yuna Fu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, and Institute of Biochemistry and Biophysics, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Heng Sun
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, and Institute of Biochemistry and Biophysics, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Jianhua Wang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, and Institute of Biochemistry and Biophysics, College of Bioengineering, Chongqing University, Chongqing, 400044, China.
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176
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Xiao X, Liu E, Shao J, Ge S. Advances on biodegradable zinc-silver-based alloys for biomedical applications. J Appl Biomater Funct Mater 2021; 19:22808000211062407. [PMID: 34903075 DOI: 10.1177/22808000211062407] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The biodegradable metals have great potential for the biomedical applications, which could be gradually degraded, absorbed, or excreted in the human body, avoiding the removal though secondary surgery. Zinc-based alloys are novel series of degradable metals for medical applications, and they are gaining lots of attention in the research field of absorbable metals. Zinc-silver (Zn-Ag) alloys show superior mechanical strength, good biodegradability, biocompatibility, and antibacterial properties, which render them to be potential candidates for biomedical applications. In this paper, we reviewed the development of Zn-Ag alloys in terms of mechanical properties, degradabilities, biocompatibilities, antibacterial properties, and potential applications in dentistry.
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Affiliation(s)
- Ximei Xiao
- Department of Periodontology, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China.,Department of Endodontics, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Enyang Liu
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, China
| | - Jinlong Shao
- Department of Periodontology, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China
| | - Shaohua Ge
- Department of Periodontology, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China
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177
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Mechanism of Zn 2+ and Ca 2+ Binding to Human S100A1. Biomolecules 2021; 11:biom11121823. [PMID: 34944467 PMCID: PMC8699212 DOI: 10.3390/biom11121823] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 11/26/2021] [Accepted: 11/30/2021] [Indexed: 12/18/2022] Open
Abstract
S100A1 is a member of the S100 family of small ubiquitous Ca2+-binding proteins, which participates in the regulation of cell differentiation, motility, and survival. It exists as homo- or heterodimers. S100A1 has also been shown to bind Zn2+, but the molecular mechanisms of this binding are not yet known. In this work, using ESI-MS and ITC, we demonstrate that S100A1 can coordinate 4 zinc ions per monomer, with two high affinity (KD~4 and 770 nm) and two low affinity sites. Using competitive binding experiments between Ca2+ and Zn2+ and QM/MM molecular modeling we conclude that Zn2+ high affinity sites are located in the EF-hand motifs of S100A1. In addition, two lower affinity sites can bind Zn2+ even when the EF-hands are saturated by Ca2+, resulting in a 2Ca2+:S100A1:2Zn2+ conformer. Finally, we show that, in contrast to calcium, an excess of Zn2+ produces a destabilizing effect on S100A1 structure and leads to its aggregation. We also determined a higher affinity to Ca2+ (KD~0.16 and 24 μm) than was previously reported for S100A1, which would allow this protein to function as a Ca2+/Zn2+-sensor both inside and outside cells, participating in diverse signaling pathways under normal and pathological conditions.
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178
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Oren O, Taube R, Papo N. Amyloid β structural polymorphism, associated toxicity and therapeutic strategies. Cell Mol Life Sci 2021; 78:7185-7198. [PMID: 34643743 PMCID: PMC11072899 DOI: 10.1007/s00018-021-03954-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 08/30/2021] [Accepted: 09/27/2021] [Indexed: 12/14/2022]
Abstract
A review of the multidisciplinary scientific literature reveals a large variety of amyloid-β (Aβ) oligomeric species, differing in molecular weight, conformation and morphology. These species, which may assemble via either on- or off-aggregation pathways, exhibit differences in stability, function and neurotoxicity, according to different experimental settings. The conformations of the different Aβ species are stabilized by intra- and inter-molecular hydrogen bonds and by electrostatic and hydrophobic interactions, all depending on the chemical and physical environment (e.g., solvent, ions, pH) and interactions with other molecules, such as lipids and proteins. This complexity and the lack of a complete understanding of the relationship between the different Aβ species and their toxicity is currently dictating the nature of the inhibitor (or inducer)-based approaches that are under development for interfering with (or inducing) the formation of specific species and Aβ oligomerization, and for interfering with the associated downstream neurotoxic effects. Here, we review the principles that underlie the involvement of different Aβ oligomeric species in neurodegeneration, both in vitro and in preclinical studies. In addition, we provide an overview of the existing inhibitors (or inducers) of Aβ oligomerization that serve as potential therapeutics for neurodegenerative diseases. The review, which covers the exciting studies that have been published in the past few years, comprises three main parts: 1) on- and off-fibrillar assembly mechanisms and Aβ structural polymorphism; 2) interactions of Aβ with other molecules and cell components that dictate the Aβ aggregation pathway; and 3) targeting the on-fibrillar Aβ assembly pathway as a therapeutic approach.
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Affiliation(s)
- Ofek Oren
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, P.O. Box 653, 84105, Beer-Sheva, Israel
- Department of Biotechnology Engineering, Avram and Stella Goldstein-Goren, National Institute of Biotechnology in the Negev, Ben-Gurion University of the Negev, P.O. Box 653, 84105, Beer-Sheva, Israel
| | - Ran Taube
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, P.O. Box 653, 84105, Beer-Sheva, Israel
| | - Niv Papo
- Department of Biotechnology Engineering, Avram and Stella Goldstein-Goren, National Institute of Biotechnology in the Negev, Ben-Gurion University of the Negev, P.O. Box 653, 84105, Beer-Sheva, Israel.
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179
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Wei H, Frey AM, Jasanoff A. Molecular fMRI of neurochemical signaling. J Neurosci Methods 2021; 364:109372. [PMID: 34597714 DOI: 10.1016/j.jneumeth.2021.109372] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 09/23/2021] [Accepted: 09/25/2021] [Indexed: 12/12/2022]
Abstract
Magnetic resonance imaging (MRI) is the most widely applied technique for brain-wide measurement of neural function in humans and animals. In conventional functional MRI (fMRI), brain signaling is detected indirectly, via localized activity-dependent changes in regional blood flow, oxygenation, and volume, to which MRI contrast can be readily sensitized. Although such hemodynamic fMRI methods are powerful tools for analysis of brain activity, they lack specificity for the many molecules and cell types that play functionally distinct roles in neural processing. A suite of techniques collectively known to as "molecular fMRI," addresses this limitation by permitting MRI-based detection of specific molecular processes in deep brain tissue. This review discusses how molecular fMRI is coming to be used in the study of neurochemical dynamics that mediate intercellular communication in the brain. Neurochemical molecular fMRI is a potentially powerful approach for mechanistic analysis of brain-wide function, but the techniques are still in early stages of development. Here we provide an overview of the major advances and results that have been achieved to date, as well as directions for further development.
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Affiliation(s)
- He Wei
- Department of Biological Engineering, Massachusetts Institute of Technology, United States
| | - Abigail M Frey
- Department of Chemical Engineering, Massachusetts Institute of Technology, United States
| | - Alan Jasanoff
- Department of Biological Engineering, Massachusetts Institute of Technology, United States; Department of Brain & Cognitive Sciences, Massachusetts Institute of Technology, United States; Department of Nuclear Science & Engineering, Massachusetts Institute of Technology, United States.
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180
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Zhang J, Peng X, Wu Y, Ren H, Sun J, Tong S, Liu T, Zhao Y, Wang S, Tang C, Chen L, Chen Z. Red‐ and Far‐Red‐Emitting Zinc Probes with Minimal Phototoxicity for Multiplexed Recording of Orchestrated Insulin Secretion. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202109510] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Junwei Zhang
- College of Future Technology Institute of Molecular Medicine National Biomedical Imaging Center Beijing Key Laboratory of Cardiometabolic Molecular Medicine Peking University Beijing 100871 China
| | - Xiaohong Peng
- College of Future Technology Institute of Molecular Medicine National Biomedical Imaging Center Beijing Key Laboratory of Cardiometabolic Molecular Medicine Peking University Beijing 100871 China
- State Key Laboratory of Membrane Biology Peking University Beijing 100871 China
| | - Yunxiang Wu
- College of Future Technology Institute of Molecular Medicine National Biomedical Imaging Center Beijing Key Laboratory of Cardiometabolic Molecular Medicine Peking University Beijing 100871 China
| | - Huixia Ren
- Peking-Tsinghua Center for Life Science Peking University Beijing 100871 China
- Center for Quantitative Biology Peking University Beijing 100871 China
| | - Jingfu Sun
- PKU-Nanjing Institute of Translational Medicine Nanjing 211800 China
| | - Shiyan Tong
- School of Life Science Peking University Beijing 100871 China
| | - Tianyan Liu
- Peking-Tsinghua Center for Life Science Peking University Beijing 100871 China
| | - Yiwen Zhao
- College of Future Technology Institute of Molecular Medicine National Biomedical Imaging Center Beijing Key Laboratory of Cardiometabolic Molecular Medicine Peking University Beijing 100871 China
| | - Shusen Wang
- Organ Transplant Center Tianjin First Central Hospital Nankai University Tianjin 300192 China
| | - Chao Tang
- Peking-Tsinghua Center for Life Science Peking University Beijing 100871 China
- Center for Quantitative Biology Peking University Beijing 100871 China
| | - Liangyi Chen
- College of Future Technology Institute of Molecular Medicine National Biomedical Imaging Center Beijing Key Laboratory of Cardiometabolic Molecular Medicine Peking University Beijing 100871 China
- State Key Laboratory of Membrane Biology Peking University Beijing 100871 China
| | - Zhixing Chen
- College of Future Technology Institute of Molecular Medicine National Biomedical Imaging Center Beijing Key Laboratory of Cardiometabolic Molecular Medicine Peking University Beijing 100871 China
- Peking-Tsinghua Center for Life Science Peking University Beijing 100871 China
- PKU-Nanjing Institute of Translational Medicine Nanjing 211800 China
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181
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Pan R, Yu S, Zhang H, Timmins GS, Weaver J, Yang Y, Zhou X, Liu KJ. Endogenous zinc protoporphyrin formation critically contributes to hemorrhagic stroke-induced brain damage. J Cereb Blood Flow Metab 2021; 41:3232-3247. [PMID: 34187233 PMCID: PMC8669275 DOI: 10.1177/0271678x211028475] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Hemorrhagic stroke is a leading cause of death. The causes of intracerebral hemorrhage (ICH)-induced brain damage are thought to include lysis of red blood cells, hemin release and iron overload. These mechanisms, however, have not proven very amenable to therapeutic intervention, and so other mechanistic targets are being sought. Here we report that accumulation of endogenously formed zinc protoporphyrin (ZnPP) also critically contributes to ICH-induced brain damage. ICH caused a significant accumulation of ZnPP in brain tissue surrounding hematoma, as evidenced by fluorescence microscopy of ZnPP, and further confirmed by fluorescence spectroscopy and supercritical fluid chromatography-mass spectrometry. ZnPP formation was dependent upon both ICH-induced hypoxia and an increase in free zinc accumulation. Notably, inhibiting ferrochelatase, which catalyzes insertion of zinc into protoporphyrin, greatly decreased ICH-induced endogenous ZnPP generation. Moreover, a significant decrease in brain damage was observed upon ferrochelatase inhibition, suggesting that endogenous ZnPP contributes to the damage in ICH. Our findings reveal a novel mechanism of ICH-induced brain damage through ferrochelatase-mediated formation of ZnPP in ICH tissue. Since ferrochelatase can be readily inhibited by small molecules, such as protein kinase inhibitors, this may provide a promising new and druggable target for ICH therapy.
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Affiliation(s)
- Rong Pan
- Department of Pharmaceutical Sciences, University of New Mexico Health Sciences Center, Albuquerque, USA
| | - Song Yu
- Department of Pharmaceutical Sciences, University of New Mexico Health Sciences Center, Albuquerque, USA
| | - Haikun Zhang
- Department of Pharmaceutical Sciences, University of New Mexico Health Sciences Center, Albuquerque, USA
| | - Graham S Timmins
- Department of Pharmaceutical Sciences, University of New Mexico Health Sciences Center, Albuquerque, USA
| | - John Weaver
- Department of Pharmaceutical Sciences, University of New Mexico Health Sciences Center, Albuquerque, USA
| | - Yirong Yang
- Department of Pharmaceutical Sciences, University of New Mexico Health Sciences Center, Albuquerque, USA
| | - Xixi Zhou
- Department of Pharmaceutical Sciences, University of New Mexico Health Sciences Center, Albuquerque, USA
| | - Ke Jian Liu
- Department of Pharmaceutical Sciences, University of New Mexico Health Sciences Center, Albuquerque, USA
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182
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Hong C, Wang Q, Chen Y, Gao Y, Shang J, Weng X, Liu X, Wang F. Intelligent demethylase-driven DNAzyme sensor for highly reliable metal-ion imaging in living cells. Chem Sci 2021; 12:15339-15346. [PMID: 34976354 PMCID: PMC8635203 DOI: 10.1039/d1sc05370a] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 10/28/2021] [Indexed: 12/21/2022] Open
Abstract
The accurate intracellular imaging of metal ions requires an exquisite site-specific activation of metal-ion sensors, for which the pervasive epigenetic regulation strategy can serve as an ideal alternative thanks to its orthogonal control feature and endogenous cell/tissue-specific expression pattern. Herein, a simple yet versatile demethylation strategy was proposed for on-site repairing-to-activating the metal-ion-targeting DNAzyme and for achieving the accurate site-specific imaging of metal ions in live cells. This endogenous epigenetic demethylation-regulating DNAzyme system was prepared by modifying the DNAzyme with an m6A methylation group that incapacitates the DNAzyme probe, thus eliminating possible off-site signal leakage, while the cell-specific demethylase-mediated removal of methylation modification could efficiently restore the initial catalytic DNAzyme for sensing metal ions, thus allowing a high-contrast bioimaging in live cells. This epigenetic repair-to-activate DNAzyme strategy may facilitate the robust visualization of disease-specific biomarkers for in-depth exploration of their biological functions.
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Affiliation(s)
- Chen Hong
- College of Chemistry and Molecular Sciences, Wuhan University Wuhan 430072 P. R. China
| | - Qing Wang
- College of Chemistry and Molecular Sciences, Wuhan University Wuhan 430072 P. R. China
| | - Yingying Chen
- College of Chemistry and Molecular Sciences, Wuhan University Wuhan 430072 P. R. China
| | - Yuhui Gao
- 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
| | - Xiaocheng Weng
- 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 .,Research Institute of Shenzhen, Wuhan University Shenzhen 518057 P. R. China
| | - Fuan Wang
- College of Chemistry and Molecular Sciences, Wuhan University Wuhan 430072 P. R. China .,Research Institute of Shenzhen, Wuhan University Shenzhen 518057 P. R. China
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183
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Kavanagh O, Elmes R, O’Sullivan F, Farragher J, Robinson S, Walker G. Investigating Structural Property Relationships to Enable Repurposing of Pharmaceuticals as Zinc Ionophores. Pharmaceutics 2021; 13:2032. [PMID: 34959313 PMCID: PMC8704213 DOI: 10.3390/pharmaceutics13122032] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 11/17/2021] [Accepted: 11/22/2021] [Indexed: 12/12/2022] Open
Abstract
The importance of zinc in biology has gained greater recognition in recent years due to its essential contributions to the function of many endogenous enzymes. Disruption of zinc homeostasis may be useful in treating pathological conditions, such as Alzheimer's, and for antiviral purposes. Despite the growth of knowledge and increased interest in zinc, little is known about the structure and function of zinc ionophores. In this study we analyse the Cambridge Structural Database and solution complexation studies found in the literature to identify key functional groups which may confer zinc ionophorism. Pharmaceuticals, nutraceuticals and amino acids with these functionalities were selected to enable us to explore the translatability of ionophoric activity from in vitro assays to cellular systems. We find that although certain species may complex to zinc in the solid and solution states, and may carry ions across simple membrane systems, this does not necessarily translate into ionophoric activity. We propose that the CSD can help refine key functionalities but that ionophoric activity must be confirmed in cellular systems.
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Affiliation(s)
- Oisín Kavanagh
- SSPC, The SFI Research Centre for Pharmaceuticals, V94 T9PX Limerick, Ireland; (R.E.); (F.O.); (J.F.); (S.R.)
- School of Pharmacy, Newcastle University, Newcastle upon Tyne NE1 7RU, UK
- School of Chemical Sciences, Bernal Institute, University of Limerick, V94 T9PX Limerick, Ireland
- Department of Chemistry, Maynooth University, National University of Ireland, W23 F2H6 Maynooth, Ireland
- National Institute for Cellular Biotechnology, Dublin City University, D09 NR58 Dublin, Ireland
| | - Robert Elmes
- SSPC, The SFI Research Centre for Pharmaceuticals, V94 T9PX Limerick, Ireland; (R.E.); (F.O.); (J.F.); (S.R.)
- Department of Chemistry, Maynooth University, National University of Ireland, W23 F2H6 Maynooth, Ireland
| | - Finbarr O’Sullivan
- SSPC, The SFI Research Centre for Pharmaceuticals, V94 T9PX Limerick, Ireland; (R.E.); (F.O.); (J.F.); (S.R.)
- National Institute for Cellular Biotechnology, Dublin City University, D09 NR58 Dublin, Ireland
| | - John Farragher
- SSPC, The SFI Research Centre for Pharmaceuticals, V94 T9PX Limerick, Ireland; (R.E.); (F.O.); (J.F.); (S.R.)
| | - Shane Robinson
- SSPC, The SFI Research Centre for Pharmaceuticals, V94 T9PX Limerick, Ireland; (R.E.); (F.O.); (J.F.); (S.R.)
- Janssen Pharmaceutical Sciences, T45 P663 Cork, Ireland
| | - Gavin Walker
- SSPC, The SFI Research Centre for Pharmaceuticals, V94 T9PX Limerick, Ireland; (R.E.); (F.O.); (J.F.); (S.R.)
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184
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Zheng HW, Yang DD, Liang QF, Zheng XJ. Multi-stimuli-responsive Zn(II)-Schiff base complexes adjusted by rotatable aromatic rings. Dalton Trans 2021; 50:16803-16809. [PMID: 34766609 DOI: 10.1039/d1dt02476k] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Multifunctional luminescent materials have attracted intensive interest. However, the mechanisms behind them are still to be explored. In this work, three Zn(II) complexes based on Schiff bases (HL1 and HL2) that contain rotatable aromatic rings were designed and prepared. They exhibited different mechanochromic luminescence (MCL) and acidochromism. The polymorphous ZnL12 and ZnL1a2 crystallize in different crystal systems with different conformations. The ligands in ZnL12 adopt a more twisted conformation than those in ZnL1a2. ZnL12 exhibits MCL with high contrast, while ZnL1a2 exhibits a negligible MCL property. This may be due to the looser packing of the complex induced by the more twisted conformation of the ligand HL1. ZnL12 could undergo crystal phase transformation into ZnL1a2 by grinding/fuming cycles. To increase the flexibility of the ligand, a methylene group was introduced to result in HL2, which can improve the mechanochromic luminescence effect of the Zn(II) complex with high color contrast. The ligands involved in coordination generally adopt a more twisted conformation than those free ligands due to the steric hindrance, resulting in more obvious MCL for complexes. By comparing the luminescence of ligands and their complexes under acid-base stimulation, it is found that the acidochromic properties could be attributed to the generation of ligands at the surface of complexes via the gaseous HCl-solid Zn(II) complex reaction. The high contrast mechanochromic and acidochromic luminescence properties would lead to promising potential applications of these complexes in smart fluorescent materials, and would also provide some ideas for the design of multi-stimuli responsive molecules.
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Affiliation(s)
- Han-Wen Zheng
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China.
| | - Dong-Dong Yang
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China.
| | - Qiong-Fang Liang
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China.
| | - Xiang-Jun Zheng
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China.
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185
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Singh AK, Nair AV, Singh NDP. Small Two-Photon Organic Fluorogenic Probes: Sensing and Bioimaging of Cancer Relevant Biomarkers. Anal Chem 2021; 94:177-192. [PMID: 34793114 DOI: 10.1021/acs.analchem.1c04306] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Amit Kumar Singh
- Department of Chemistry, Indian Institute of Technology Kharagpur 721302, West Bengal, India
| | - Asha V Nair
- Department of Chemistry, Indian Institute of Technology Kharagpur 721302, West Bengal, India
| | - N D Pradeep Singh
- Department of Chemistry, Indian Institute of Technology Kharagpur 721302, West Bengal, India
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186
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Samper-Martín B, Sarrias A, Lázaro B, Pérez-Montero M, Rodríguez-Rodríguez R, Ribeiro MPC, Bañón A, Wolfgeher D, Jessen HJ, Alsina B, Clotet J, Kron SJ, Saiardi A, Jiménez J, Bru S. Polyphosphate degradation by Nudt3-Zn 2+ mediates oxidative stress response. Cell Rep 2021; 37:110004. [PMID: 34788624 DOI: 10.1016/j.celrep.2021.110004] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 10/08/2021] [Accepted: 10/22/2021] [Indexed: 02/06/2023] Open
Abstract
Polyphosphate (polyP) is a polymer of hundreds of phosphate residues present in all organisms. In mammals, polyP is involved in crucial physiological processes, including coagulation, inflammation, and stress response. However, after decades of research, the metabolic enzymes are still unknown. Here, we purify and identify Nudt3, a NUDIX family member, as the enzyme responsible for polyP phosphatase activity in mammalian cells. We show that Nudt3 shifts its substrate specificity depending on the cation; specifically, Nudt3 is active on polyP when Zn2+ is present. Nudt3 has in vivo polyP phosphatase activity in human cells, and importantly, we show that cells with altered polyP levels by modifying Nudt3 protein amount present reduced viability upon oxidative stress and increased DNA damage, suggesting that polyP and Nudt3 play a role in oxidative stress protection. Finally, we show that Nudt3 is involved in the early stages of embryo development in zebrafish.
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Affiliation(s)
- Bàrbara Samper-Martín
- Faculty of Medicine and Health Sciences, Universitat Internacional de Catalunya, 08195 Sant Cugat del Vallès, Barcelona, Spain
| | - Ana Sarrias
- Faculty of Medicine and Health Sciences, Universitat Internacional de Catalunya, 08195 Sant Cugat del Vallès, Barcelona, Spain
| | - Blanca Lázaro
- Faculty of Medicine and Health Sciences, Universitat Internacional de Catalunya, 08195 Sant Cugat del Vallès, Barcelona, Spain
| | - Marta Pérez-Montero
- Faculty of Medicine and Health Sciences, Universitat Internacional de Catalunya, 08195 Sant Cugat del Vallès, Barcelona, Spain
| | - Rosalía Rodríguez-Rodríguez
- Faculty of Medicine and Health Sciences, Universitat Internacional de Catalunya, 08195 Sant Cugat del Vallès, Barcelona, Spain
| | - Mariana P C Ribeiro
- Faculty of Medicine and Health Sciences, Universitat Internacional de Catalunya, 08195 Sant Cugat del Vallès, Barcelona, Spain
| | - Aitor Bañón
- Department of Experimental and Health Sciences, Universitat Pompeu Fabra-Parc de Recerca Biomèdica, 08003 Barcelona, Spain
| | - Don Wolfgeher
- Department of Molecular Genetics and Cell Biology, University of Chicago, Chicago, IL 60637, USA
| | - Henning J Jessen
- Institute of Organic Chemistry, University of Freiburg, 79104 Freiburg, Germany; CIBSS - Centre for Integrative Biological Signalling Studies, University of Freiburg, 79104 Freiburg, Germany
| | - Berta Alsina
- Department of Experimental and Health Sciences, Universitat Pompeu Fabra-Parc de Recerca Biomèdica, 08003 Barcelona, Spain
| | - Josep Clotet
- Faculty of Medicine and Health Sciences, Universitat Internacional de Catalunya, 08195 Sant Cugat del Vallès, Barcelona, Spain
| | - Stephen J Kron
- Department of Molecular Genetics and Cell Biology, University of Chicago, Chicago, IL 60637, USA
| | - Adolfo Saiardi
- Medical Research Council Laboratory for Molecular Cell Biology, University College London, London WC1E6BT, UK
| | - Javier Jiménez
- Faculty of Medicine and Health Sciences, Universitat Internacional de Catalunya, 08195 Sant Cugat del Vallès, Barcelona, Spain.
| | - Samuel Bru
- Faculty of Medicine and Health Sciences, Universitat Internacional de Catalunya, 08195 Sant Cugat del Vallès, Barcelona, Spain; Institut de Neurociències, Universitat Autònoma de Barcelona, 08193 Bellaterra, Cerdanyola del Vallès, Spain.
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187
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Yu S, Li Y, Gao L, Zhao P, Wang L, Li L, Lin YW. A highly selective and sensitive Zn 2+ fluorescent sensor based on zinc finger-like peptide and its application in cell imaging. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 261:120042. [PMID: 34116420 DOI: 10.1016/j.saa.2021.120042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 05/14/2021] [Accepted: 05/29/2021] [Indexed: 06/12/2023]
Abstract
Developing new chemosensors for detection of Zn2+ has attracted great attentions because of the important roles of Zn2+ in biological systems, and it will produce toxic effects with an excessive intake of zinc ion. Metalloproteins are often used as an effective template for the design and development of peptide-based fluorescent sensors. In this study, we designed a new and simple ratiometric fluorescent sensor for Zn2+, which was based on a zinc finger-like peptide and labeled with a dansyl group, i.e., Dansyl-His-Gln-Arg-Thr-His-Trp-NH2 (D-P6), by using solid phase peptide synthesis (SPPS). The dimeric peptide has a high affinity for Zn2+ overothermetalions, as indicated by spectroscopic studies, as well as molecular modeling. Remarkably, the sensor exhibited a highly selective and sensitive ratiometric fluorescent response to Zn2+ by fluorescent resonance energy transfer effect between tryptophan residue and fluorophore dansyl group, with a very low detection limit of 33 nM in aqueous solution. Furthermore, the sensor displayed a very low biotoxicity, which allows successful detection of Zn2+ in living HeLa cells. We believe that the new sensor may have potential applications in biological science.
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Affiliation(s)
- Shuaibing Yu
- School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, China
| | - Yan Li
- School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, China
| | - Lei Gao
- Zhong Yuan Academy of Biological Medicine, Liaocheng People's Hospital Affiliated to Shandong University, Liaocheng, China
| | - Peiran Zhao
- Zhong Yuan Academy of Biological Medicine, Liaocheng People's Hospital Affiliated to Shandong University, Liaocheng, China
| | - Lei Wang
- School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, China
| | - Lianzhi Li
- School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, China.
| | - Ying-Wu Lin
- School of Chemistry and Chemical Engineering, University of South China, Hengyang, China.
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188
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Design of 99mTc-labeled zinc-chelating imaging probe for SPECT imaging of the pancreas. Bioorg Med Chem Lett 2021; 52:128385. [PMID: 34592436 DOI: 10.1016/j.bmcl.2021.128385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 09/16/2021] [Accepted: 09/22/2021] [Indexed: 11/23/2022]
Abstract
Early and sensitive diagnosis of pancreatic diseases is a contemporary clinical challenge. Zinc level in pancreatic tissue and its secretion in pancreatic juice has long been considered a surrogate marker of pancreatic function. The objective of this study was to design a Zn-chelating imaging probe (ZCIP) which could be labeled with 99mTc radionuclide for imaging of pancreas using single photon emission tomography (SPECT). We synthesized ZCIP as a bifunctional chelate consisting of diethylene triamine pentaacetic acid for 99mTc-chelation at one end and bispicolylethylamine for Zn-complexation at the other end. ZCIP was labeled with 99mTc by standard Sn2+-based reduction method. The 99mTc-labeled ZCIP was studied in normal mice (0.3 mCi) for SPECT imaging. We found that ZCIP consistently labeled with 99mTc radionuclide with over 95% efficiency. Addition of ZCIP altered the spectrum of standard dithizone-Zn complex, indicating its ability to chelate Zn. SPECT data demonstrated the ability of 99mTc-ZCIP to image pancreas with high sensitivity in a non-invasive manner; liver and spleen were the other major organs of 99mTc-ZCIP uptake. Based on these results, we conclude that 99mTc-ZCIP presents as a novel radiotracer for pancreas imaging for diagnosis of diseases such as pancreatitis.
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189
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Chai Q, Xie L, Gao M, Liu Y, Xu X, Huang X, Chen P, Wu T, Wan Q, Kong B. Super-assembled silica nanoprobes for intracellular Zn(II) sensing and reperfusion injury treatment through in situ MOF crystallization. Analyst 2021; 146:6788-6797. [PMID: 34671790 DOI: 10.1039/d1an01475g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The production of excess free zinc ions (Zn2+) in cells has been identified as an important cause of cell injury or apoptosis after ischemia reperfusion. Thus, developing a nanosystem with multiple therapeutic functions to significantly eliminate multiple cell injury factors is of great interest. Here, a super-assembled nanosystem consisting of a polyethylene glycol (PEG) surface-modified mesoporous silica nanoparticle (MSN) encapsulating 2-methylimidazole (2MI) and a Zn2+ probe (PZn) was fabricated. The 2MI-P@MSN nanoassemblies showed a "turn-on" fluorescence signal at 476 nm toward zinc ions due to the presence of PZn. Besides, zeolitic imidazolate framework-8 (ZIF-8) could be assembled on the site intracellularly after 2MI chelating with free zinc ions. The experimental results revealed that 2MI-P@MSN exhibited excellent biocompatibility and non-cytotoxicity, and was able to provide satisfactory protection to OGD/R-treated cells based on zinc ion adsorption and the antioxidant effect of ZIF-8, which could effectively improve the survival rate of reperfusion injury cells from 52% to 73%. Notably, selective and quantitative sensing of Zn2+ was successfully carried out in the cells. This strategy highlights the potential of the detection, absorption and assembly of excess zinc ions simultaneously for cell therapy, which provides a promising therapeutic method for ischemic stroke, oxidative damage and diseases associated with zinc ion accumulation.
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Affiliation(s)
- Qingdong Chai
- Institute of Advanced Cross-field Science, College of Life Science, Qingdao University, Qingdao 266071, P. R. China
| | - Lei Xie
- Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, Laboratory of Advanced Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, P. R. China.
| | - Meng Gao
- National Supercomputer Research Center of Advanced Materials, Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, P. R. China
| | - Yingnan Liu
- Institute of Advanced Cross-field Science, College of Life Science, Qingdao University, Qingdao 266071, P. R. China
| | - Xiangyu Xu
- Institute of Neuroregeneration & Neurorehabilitation, Qingdao University, 308 Ningxia Street, Qingdao 266071, China
| | - Xiaohong Huang
- Institute of Neuroregeneration & Neurorehabilitation, Qingdao University, 308 Ningxia Street, Qingdao 266071, China
| | - Pu Chen
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Tong Wu
- Institute of Neuroregeneration & Neurorehabilitation, Qingdao University, 308 Ningxia Street, Qingdao 266071, China
| | - Qi Wan
- Institute of Neuroregeneration & Neurorehabilitation, Qingdao University, 308 Ningxia Street, Qingdao 266071, China
| | - Biao Kong
- Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Department of Chemistry, Laboratory of Advanced Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, P. R. China.
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190
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Khelfaoui H, Harkati D, Saleh BA. Molecular docking, molecular dynamics simulations and reactivity, studies on approved drugs library targeting ACE2 and SARS-CoV-2 binding with ACE2. J Biomol Struct Dyn 2021; 39:7246-7262. [PMID: 32752951 PMCID: PMC7484571 DOI: 10.1080/07391102.2020.1803967] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Accepted: 07/27/2020] [Indexed: 02/06/2023]
Abstract
The recent new contagion coronavirus 2019 (COVID-19) disease is a new generation of severe acute respiratory syndrome coronavirus-2 SARS-CoV-2 which infected millions confirmed cases and hundreds of thousands death cases around the world so far. Molecular docking combined with molecular dynamics is one of the most important tools of drug discovery and drug design, which it used to examine the type of binding between the ligand and its protein enzyme. Global reactivity has important properties, which enable chemists to understand the chemical reactivity and kinetic stability of compounds. In this study, molecular docking and reactivity were applied for eighteen drugs, which are similar in structure to chloroquine and hydroxychloroquine, the potential inhibitors to angiotensin-converting enzyme (ACE2). Those drugs were selected from DrugBank. The reactivity, molecular docking and molecular dynamics were performed for two receptors ACE2 and [SARS-CoV-2/ACE2] complex receptor in two active sites to find a ligand, which may inhibit COVID-19. The results obtained from this study showed that Ramipril, Delapril and Lisinopril could bind with ACE2 receptor and [SARS-CoV-2/ACE2] complex better than chloroquine and hydroxychloroquine. This new understanding should help to improve predictions of the impact of such alternatives on COVID-19.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Hadjer Khelfaoui
- Group of Computational Pharmaceutical
Chemistry, LMCE Laboratory, Faculty of Exact and Natural Sciences, Department of Matter
Sciences, University of Biskra, Biskra,
Algeria
| | - Dalal Harkati
- Group of Computational Pharmaceutical
Chemistry, LMCE Laboratory, Faculty of Exact and Natural Sciences, Department of Matter
Sciences, University of Biskra, Biskra,
Algeria
| | - Basil A. Saleh
- Department of Chemistry, College of Science,
University of Basrah, Basrah, Iraq
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191
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Karim MM, Sultana S, Sultana R, Rahman MT. Possible Benefits of Zinc supplement in CVD and COVID-19 Comorbidity. J Infect Public Health 2021; 14:1686-1692. [PMID: 34649043 PMCID: PMC8489295 DOI: 10.1016/j.jiph.2021.09.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 09/09/2021] [Accepted: 09/29/2021] [Indexed: 12/31/2022] Open
Abstract
As far as comorbidity is concerned, cardiovascular diseases (CVD) appear to be accounted for the highest prevalence, severity, and fatality among COVID 19 patients. A wide array of causal links connecting CVD and COVID-19 baffle the overall prognosis as well as the efficacy of the given therapeutic interventions. At the centre of this puzzle lies ACE2 that works as a receptor for the SARS-CoV-2, and functional expression of which is also needed to minimize vasoconstriction otherwise would lead to high blood pressure. Furthermore, SARS-CoV-2 infection seems to reduce the functional expression of ACE2. Given these circumstances, it might be advisable to consider a treatment plan for COVID-19 patients with CVD in an approach that would neither aggravate the vasodeleterious arm of the renin-angiotensinogen-aldosterone system (RAAS) nor compromise the vasoprotective arm of RAAS but is effective to minimize or if possible, inhibit the viral replication. Given the immune modulatory role of Zn in both CVD and COVID-19 pathogenesis, zinc supplement to the selective treatment plan for CVD and COVID-19 comorbid conditions, to be decided by the clinicians depending on the cardiovascular conditions of the patients, might greatly improve the therapeutic outcome. Notably, ACE2 is a zinc metalloenzyme and zinc is also known to inhibit viral replication.
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Affiliation(s)
| | - Shahnaz Sultana
- Institute of National Analytical Research and Service (INARS), Bangladesh Council of Scientific and Industrial Research (BCSIR), New Elephant Road, Dhaka 1205, Bangladesh
| | - Rokaia Sultana
- Institute of National Analytical Research and Service (INARS), Bangladesh Council of Scientific and Industrial Research (BCSIR), New Elephant Road, Dhaka 1205, Bangladesh
| | - Mohammad Tariqur Rahman
- Faculty of Dentistry, University of Malaya, Kuala Lumpur 50603, Malaysia,Corresponding author
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192
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Wang Y, Venezuela J, Dargusch M. Biodegradable shape memory alloys: Progress and prospects. Biomaterials 2021; 279:121215. [PMID: 34736144 DOI: 10.1016/j.biomaterials.2021.121215] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 09/20/2021] [Accepted: 10/20/2021] [Indexed: 01/08/2023]
Abstract
Shape memory alloys (SMAs) have a wide range of potential novel medical applications due to their superelastic properties and ability to restore and retain a 'memorised' shape. However, most SMAs are permanent and do not degrade in the body when used in implantable devices. The use of non-degrading metals may lead to the requirement for secondary removal surgery and this in turn may introduce both short and long-term health risks, or additional waste disposal requirements. Biodegradable SMAs can effectively eliminate these issues by gradually degrading inside the human body while providing the necessary support for healing purposes, therefore significantly alleviating patient discomfort and improving healing efficiency. This paper reviews the current progress in biodegradable SMAs from the perspective of biodegradability, mechanical properties, and biocompatibility. By providing insights into the status of SMAs and biodegradation mechanisms, the prospects for Mg- and Fe-based biodegradable SMAs to advance biodegradable SMA-based medical devices are explored. Finally, the remaining challenges and potential solutions in the biodegradable SMAs area are discussed, providing suggestions and research frameworks for future studies on this topic.
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Affiliation(s)
- Yuan Wang
- Centre for Advanced Materials Processing and Manufacturing (AMPAM), The University of Queensland, Brisbane, Queensland, 4072, Australia
| | - Jeffrey Venezuela
- Centre for Advanced Materials Processing and Manufacturing (AMPAM), The University of Queensland, Brisbane, Queensland, 4072, Australia
| | - Matthew Dargusch
- Centre for Advanced Materials Processing and Manufacturing (AMPAM), The University of Queensland, Brisbane, Queensland, 4072, Australia.
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193
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A pair of transporters controls mitochondrial Zn 2+ levels to maintain mitochondrial homeostasis. Protein Cell 2021; 13:180-202. [PMID: 34687432 PMCID: PMC8901913 DOI: 10.1007/s13238-021-00881-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 09/02/2021] [Indexed: 12/15/2022] Open
Abstract
Zn2+ is required for the activity of many mitochondrial proteins, which regulate mitochondrial dynamics, apoptosis and mitophagy. However, it is not understood how the proper mitochondrial Zn2+ level is achieved to maintain mitochondrial homeostasis. Using Caenorhabditis elegans, we reveal here that a pair of mitochondrion-localized transporters controls the mitochondrial level of Zn2+. We demonstrate that SLC-30A9/ZnT9 is a mitochondrial Zn2+ exporter. Loss of SLC-30A9 leads to mitochondrial Zn2+ accumulation, which damages mitochondria, impairs animal development and shortens the life span. We further identify SLC-25A25/SCaMC-2 as an important regulator of mitochondrial Zn2+ import. Loss of SLC-25A25 suppresses the abnormal mitochondrial Zn2+ accumulation and defective mitochondrial structure and functions caused by loss of SLC-30A9. Moreover, we reveal that the endoplasmic reticulum contains the Zn2+ pool from which mitochondrial Zn2+ is imported. These findings establish the molecular basis for controlling the correct mitochondrial Zn2+ levels for normal mitochondrial structure and functions.
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194
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Bhan N, Callisto A, Strutz J, Glaser J, Kalhor R, Boyden ES, Church G, Kording K, Tyo KEJ. Recording Temporal Signals with Minutes Resolution Using Enzymatic DNA Synthesis. J Am Chem Soc 2021; 143:16630-16640. [PMID: 34591459 PMCID: PMC8982284 DOI: 10.1021/jacs.1c07331] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Employing DNA as a high-density data storage medium has paved the way for next-generation digital storage and biosensing technologies. However, the multipart architecture of current DNA-based recording techniques renders them inherently slow and incapable of recording fluctuating signals with subhour frequencies. To address this limitation, we developed a simplified system employing a single enzyme, terminal deoxynucleotidyl transferase (TdT), to transduce environmental signals into DNA. TdT adds nucleotides to the 3'-ends of single-stranded DNA (ssDNA) in a template-independent manner, selecting bases according to inherent preferences and environmental conditions. By characterizing TdT nucleotide selectivity under different conditions, we show that TdT can encode various physiologically relevant signals such as Co2+, Ca2+, and Zn2+ concentrations and temperature changes in vitro. Further, by considering the average rate of nucleotide incorporation, we show that the resulting ssDNA functions as a molecular ticker tape. With this method we accurately encode a temporal record of fluctuations in Co2+ concentration to within 1 min over a 60 min period. Finally, we engineer TdT to allosterically turn off in the presence of a physiologically relevant concentration of calcium. We use this engineered TdT in concert with a reference TdT to develop a two-polymerase system capable of recording a single-step change in the Ca2+ signal to within 1 min over a 60 min period. This work expands the repertoire of DNA-based recording techniques by developing a novel DNA synthesis-based system that can record temporal environmental signals into DNA with a resolution of minutes.
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Affiliation(s)
- Namita Bhan
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
- Mitolab, Cambridge, Massachusetts 02139, United States
| | - Alec Callisto
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Jonathan Strutz
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Joshua Glaser
- Center for Theoretical Neuroscience, Columbia University, New York, New York 10027, United States
| | - Reza Kalhor
- Department of Biomedical Engineering, Center for Epigenetics, Johns Hopkins School of Medicine, Baltimore, Maryland 21205, United States
| | - Edward S Boyden
- Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- McGovern Institute, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Howard Hughes Medical Institute, Department of Neurobiology, Harvard Medical School, Boston, Massachusetts 02115, United States
| | - George Church
- Department of Biomedical Engineering, Center for Epigenetics, Johns Hopkins School of Medicine, Baltimore, Maryland 21205, United States
| | - Konrad Kording
- Department of Neuroscience, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Keith E J Tyo
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
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195
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Panwar A, Wangchuk J, Kar M, Lodha R, Medigeshi GR. Dengue virus replication enhances labile zinc pools by modulation of ZIP8. Cell Microbiol 2021; 23:e13395. [PMID: 34619004 PMCID: PMC7612096 DOI: 10.1111/cmi.13395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 09/20/2021] [Accepted: 10/05/2021] [Indexed: 11/30/2022]
Abstract
Zinc‐dependent viral proteins rely on intracellular zinc homeostasis for successful completion of infectious life‐cycle. Here, we report that the intracellular labile zinc levels were elevated at early stages of dengue virus (DENV) infection in hepatic cells and this increase in free zinc was abolished in cells infected with UV‐inactivated virus or with a DENV replication inhibitor implicating a role for zinc homeostasis in viral RNA replication. This change in free zinc was mediated by zinc transporter, ZIP8, as siRNA‐mediated knockdown of ZIP8 resulted in abrogation of increase in free zinc levels leading to significant reduction in DENV titers suggesting a crucial role for ZIP8 in early stages of DENV replication. Furthermore, elevated free zinc levels correlated with high copy numbers of dengue genome in peripheral blood leukocytes obtained from dengue patients compared to healthy controls suggesting a critical role for zinc homeostasis in dengue infection.
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Affiliation(s)
- Aleksha Panwar
- Clinical and Cellular Virology lab, Infection and Immunology Division, Translational Health Science and Technology Institute, Faridabad, India
| | - Jigme Wangchuk
- Clinical and Cellular Virology lab, Infection and Immunology Division, Translational Health Science and Technology Institute, Faridabad, India
| | - Meenakshi Kar
- Clinical and Cellular Virology lab, Infection and Immunology Division, Translational Health Science and Technology Institute, Faridabad, India
| | - Rakesh Lodha
- Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India
| | - Guruprasad R Medigeshi
- Clinical and Cellular Virology lab, Infection and Immunology Division, Translational Health Science and Technology Institute, Faridabad, India
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196
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Abd-Elsalam S, Soliman S, Esmail ES, Khalaf M, Mostafa EF, Medhat MA, Ahmed OA, El Ghafar MSA, Alboraie M, Hassany SM. Do Zinc Supplements Enhance the Clinical Efficacy of Hydroxychloroquine?: a Randomized, Multicenter Trial. Biol Trace Elem Res 2021; 199:3642-3646. [PMID: 33247380 PMCID: PMC7695238 DOI: 10.1007/s12011-020-02512-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 11/23/2020] [Indexed: 02/07/2023]
Abstract
No specific treatment for COVID-19 infection is available up till now, and there is a great urge for effective treatment to reduce morbidity and mortality during this pandemic. We aimed to evaluate the effect of combining chloroquine/hydroxychloroquine (CQ/HCQ) and zinc in the treatment of COVID-19 patients. This was a randomized clinical trial conducted at three major University hospitals in Egypt. One hundred ninety-one patients with a confirmed diagnosis of COVID-19 infection were randomized into two groups: group I (96) patients received both HCQ and zinc, and group II (95) received HCQ only. The primary endpoints were the recovery within 28 days, the need for mechanical ventilation, and death. The two groups were matched for age and gender. They had no significant difference regarding any of the baseline laboratory parameters or clinical severity grading. Clinical recovery after 28 days was achieved by 79.2% in the zinc group and 77.9% in zinc-free treatment group, without any significant difference (p = 0.969). The need for mechanical ventilation and the overall mortality rates did not show any significant difference between the 2 groups either (p = 0.537 and 0.986, respectively). The age of the patient and the need for mechanical ventilation were the only risk factors associated with the patients' mortality by the univariate regression analysis (p = 0.001 and < 0.001, respectively). Zinc supplements did not enhance the clinical efficacy of HCQ. More randomized studies are needed to evaluate the value of adding zinc to other therapies for COVID 19. ClinicalTrials.gov Identifier: NCT04447534.
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Affiliation(s)
- Sherief Abd-Elsalam
- Tropical Medicine and Infectious Diseases Department, Faculty of Medicine, Tanta University, El-Giash Street, Tanta, 31527, Egypt.
| | - Shaimaa Soliman
- Public health and Community Medicine, Menoufia University, Menoufia, Egypt
| | - Eslam Saber Esmail
- Tropical Medicine and Infectious Diseases Department, Faculty of Medicine, Tanta University, El-Giash Street, Tanta, 31527, Egypt
| | - Mai Khalaf
- Tropical Medicine and Infectious Diseases Department, Faculty of Medicine, Tanta University, El-Giash Street, Tanta, 31527, Egypt
| | - Ehab F Mostafa
- Tropical Medicine and Gastroenterology Department, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Mohammed A Medhat
- Tropical Medicine and Gastroenterology Department, Faculty of Medicine, Assiut University, Assiut, Egypt
| | | | - Mohamed Samir Abd El Ghafar
- Department of Anesthesia, Surgical Intensive Care and Pain Medicine, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Mohamed Alboraie
- Department of Internal Medicine, Al-Azhar University, Cairo, Egypt
| | - Sahar M Hassany
- Tropical Medicine and Gastroenterology Department, Faculty of Medicine, Assiut University, Assiut, Egypt
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197
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Krishnaveni K, Murugesan S, Siva A. Fluorimetric and colorimetric detection of multianalytes Zn2+/Cd2+/F− ions via 5-bromosalicyl hydrazone appended pyrazole receptor; live cell imaging analysis in HeLa cells and zebra fish embryos. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108843] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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198
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Pothulapadu CAS, Jayaraj A, N S, Priyanka RN, Sivaraman G. Novel Benzothiazole-Based Highly Selective Ratiometric Fluorescent Turn-On Sensors for Zn 2+ and Colorimetric Chemosensors for Zn 2+, Cu 2+, and Ni 2+ Ions. ACS OMEGA 2021; 6:24473-24483. [PMID: 34604629 PMCID: PMC8482408 DOI: 10.1021/acsomega.1c02855] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Indexed: 05/17/2023]
Abstract
Metal ions play a very important role in environmental as well as biological fields. The detection of specific metal ions at a minute level caught much attention, and hence, several probes are available in the literature. Even though benzothiazole-based molecules have a special place in the medicinal field, only very few chemosensors are reported based on this moiety. The current work describes the design and synthesis of the benzothiazole-based chemosensor for a highly selective and sensitive detection of biologically important metal ions such as Zn2+, Cu2+, and Ni2+. The sensing studies of compound-1 showed a ratiometric as well as colorimetric response toward Zn2+, Cu2+, and Ni2+ ions and color changes from colorless to yellow and is found to be insensitive toward various metal ions (Cd2+, Cr3+, Mn2+, Pb2+, Ba2+, Al3+, Ca2+, Fe2+, Fe3+, Mg2+, K+, and Na+). Further, compound-1 exhibited ratiometric as well as turn-on-enhanced fluorescence response toward Zn2+ ions and turn off response for Cu2+ and Ni2+ ions. The Job plots revealed that the binding stoichiometry of compound-1 and metal ions is 2:1. The detection limits were found to be 0.25 ppm for Zn2+, while it was 0.30 ppm and 0.34 ppm for Ni2+ and Cu2+, respectively. In addition, density functional theory results strongly support the colorimetric response of metals, and the reversibility studies suggested that compound-1 can be used as a powerful chemosensor for the detection of Zn2+, Cu2+, and Ni2+ ions. The bioimaging data illustrated that compound-1 is a very effective ratiometric sensor for Zn2+ ions in live cells.
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Affiliation(s)
- Chinna Ayya Swamy Pothulapadu
- Main
Group Organometallics Materials, Supramolecular Chemistry and Catalysis
Lab, Department of Chemistry, National Institute
of Technology, Calicut 673601, India
| | - Anjitha Jayaraj
- Main
Group Organometallics Materials, Supramolecular Chemistry and Catalysis
Lab, Department of Chemistry, National Institute
of Technology, Calicut 673601, India
| | - Swathi N
- Maharani
Lakshmi Ammanni College for Women (Autonomous), Bangalore 560012, India
| | - Ragam N. Priyanka
- School
of Chemical Sciences, Mahatma Gandhi University, Kottayam 686560, India
| | - Gandhi Sivaraman
- Department
of Chemistry, Gandhigram Rural Institute
(Deemed to be University), Gandhigram 624302, India
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199
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Cheng J, Bar H, Tako E. Zinc Status Index (ZSI) for Quantification of Zinc Physiological Status. Nutrients 2021; 13:nu13103399. [PMID: 34684398 PMCID: PMC8541600 DOI: 10.3390/nu13103399] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 09/23/2021] [Accepted: 09/26/2021] [Indexed: 12/22/2022] Open
Abstract
Zinc (Zn) deficiency is estimated to affect over one billion (17%) of the world’s population. Zn plays a key role in various cellular processes such as differentiation, apoptosis, and proliferation, and is used for vital biochemical and structural processes in the body. Widely used biomarkers of Zn status include plasma, whole blood, and urine Zn, which decrease in severe Zn deficiency; however, accurate assessment of Zn status, especially in mild to moderate deficiency, is difficult, as studies with these biomarkers are often contradictory and inconsistent. Thus, sensitive and specific biological markers of Zn physiological status are still needed. In this communication, we provide the Zn status index (ZSI) concept, which consists of a three-pillar formula: (1) the LA:DGLA ratio, (2) mRNA gene expression of Zn-related proteins, and (3) gut microbiome profiling to provide a clear assessment of Zn physiological status and degree of Zn deficiency with respect to assessing dietary Zn manipulation. Analysis of five selected studies found that with lower dietary Zn intake, erythrocyte LA:DGLA ratio increased, mRNA gene expression of Zn-related proteins in duodenal and liver tissues was altered, and gut microbiota populations differed, where the ZSI, a statistical model trained on data from these studies, was built to give an accurate estimation of Zn physiological status. However, the ZSI needs to be tested and refined further to determine its full potential.
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Affiliation(s)
- Jacquelyn Cheng
- Department of Food Science, Cornell University, Stocking Hall, Ithaca, NY 14853, USA;
| | - Haim Bar
- Department of Statistics, University of Connecticut, Philip E. Austin Building, Storrs, CT 06269, USA;
| | - Elad Tako
- Department of Food Science, Cornell University, Stocking Hall, Ithaca, NY 14853, USA;
- Correspondence: ; Tel.: +1-607-255-0884
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200
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Mandal M, Sain D, Islam MM, Banik D, Periyasamy M, Mandal S, Mahapatra AK, Kar A. A ratiometric triazine-based colorimetric and fluorometric sensor for the recognition of Zn 2+ ions and its application in human lung cancer cells. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:3922-3929. [PMID: 34397060 DOI: 10.1039/d1ay01162f] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Herein, we introduce new ratiometric 2,4,6-triamino-1,3,5-triazine-based probes (R1 and R2) having three different binding sites for three metal ion binders, which can selectively detect Zn2+ ions and, particularly, the probe R1 strongly interacts with the human lung cancer cell line (A549). Both the probes R1 and R2 are competently selective towards the Zn2+ ions with the detection limits of 1.22 × 10-7 M and 1.13 × 10-7 M, respectively. The changes in the structure and absorption properties of the probes are explained by density functional theory (DFT) and time dependent density functional theory (TDDFT) calculations. The absorption and fluorescence color change in the solid TLC plate makes it a brilliant Zn2+ sensor in a portable form.
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Affiliation(s)
- Moumi Mandal
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711 103, India.
| | - Dibyendu Sain
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711 103, India.
| | - Md Majharul Islam
- Department of Microbiology, University of Calcutta, 35, B. C. Road, Ballygunge, Kolkata, 700019, India
| | - Dipanjan Banik
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711 103, India.
| | - Muthaimanoj Periyasamy
- Department of Mining Engineering, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711 103, India
| | - Sukhendu Mandal
- Department of Microbiology, University of Calcutta, 35, B. C. Road, Ballygunge, Kolkata, 700019, India
| | - Ajit Kumar Mahapatra
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711 103, India.
| | - Arik Kar
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711 103, India.
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