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Müller VVL, Simpson PV, Peng K, Basu U, Moreth D, Nagel C, Türck S, Oehninger L, Ott I, Schatzschneider U. Taming the Biological Activity of Pd(II) and Pt(II) Complexes with Triazolato "Protective" Groups: 1H, 77Se Nuclear Magnetic Resonance and X-ray Crystallographic Model Studies with Selenocysteine to Elucidate Differential Thioredoxin Reductase Inhibition. Inorg Chem 2023; 62:16203-16214. [PMID: 37713601 DOI: 10.1021/acs.inorgchem.3c02701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/17/2023]
Abstract
The biological activity of Pd(II) and Pt(II) complexes toward three different cancer cell lines as well as inhibition of selenoenzyme thioredoxin reductase (TrxR) was modulated in an unexpected way by the introduction of triazolate as a "protective group" to the inner metal coordination sphere using the iClick reaction of [M(N3)(terpy)]PF6 [M = Pd(II) or Pt(II) and terpy = 2,2':6',2″-terpyridine] with an electron-poor alkyne. In a cell proliferation assay using A549, HT-29, and MDA-MB-231 human cancer cell lines, the palladium compound was significantly more potent than the isostructural platinum analogue and exhibited submicromolar activity on the most responsive cell line. This difference was also reflected in the inhibitory efficiency toward TrxR with IC50 values of 0.1 versus 5.4 μM for the Pd(II) and Pt(II) complexes, respectively. UV/Vis kinetic studies revealed that the Pt compound binds to selenocysteine faster than to cysteine [k = (22.9 ± 0.2)·10-3 vs (7.1 ± 0.2)·10-3 s-1]. Selective triazolato ligand exchange of the title compounds with cysteine (Hcys) and selenocysteine (Hsec)─but not histidine (His) and 9-ethylguanine (9EtG)─was confirmed by 1H, 77Se, and 195Pt NMR spectroscopy. Crystal structures of three of the four ligand exchange products were obtained, including [Pt(sec)(terpy)]PF6 as the first metal complex of selenocysteine to be structurally characterized.
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Affiliation(s)
- Victoria V L Müller
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Peter V Simpson
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Kun Peng
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Uttara Basu
- Institut für Medizinische und Pharmazeutische Chemie, Technische Universität Braunschweig, Beethovenstr. 55, D-38106 Braunschweig, Germany
| | - Dominik Moreth
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Christoph Nagel
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
| | - Sebastian Türck
- Institut für Medizinische und Pharmazeutische Chemie, Technische Universität Braunschweig, Beethovenstr. 55, D-38106 Braunschweig, Germany
| | - Luciano Oehninger
- Institut für Medizinische und Pharmazeutische Chemie, Technische Universität Braunschweig, Beethovenstr. 55, D-38106 Braunschweig, Germany
| | - Ingo Ott
- Institut für Medizinische und Pharmazeutische Chemie, Technische Universität Braunschweig, Beethovenstr. 55, D-38106 Braunschweig, Germany
| | - Ulrich Schatzschneider
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany
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Kalathil AA, Guin S, Ashokan A, Basu U, Surnar B, Delma KS, Lima LM, Kryvenko ON, Dhar S. Correction to "New Pathway for Cisplatin Prodrug to Utilize Metabolic Substrate Preference to Overcome Cancer Intrinsic Resistance". ACS Cent Sci 2023; 9:1705. [PMID: 37637725 PMCID: PMC10450869 DOI: 10.1021/acscentsci.3c00920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Indexed: 08/29/2023]
Abstract
[This corrects the article DOI: 10.1021/acscentsci.3c00286.].
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Kalathil AA, Guin S, Ashokan A, Basu U, Surnar B, Delma KS, Lima LM, Kryvenko ON, Dhar S. New Pathway for Cisplatin Prodrug to Utilize Metabolic Substrate Preference to Overcome Cancer Intrinsic Resistance. ACS Cent Sci 2023; 9:1297-1312. [PMID: 37521786 PMCID: PMC10375877 DOI: 10.1021/acscentsci.3c00286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Indexed: 08/01/2023]
Abstract
Tumor cells adapt to diverse survival strategies defying our pursuit of multimodal cancer therapy. Prostate cancer (PCa) is an example that is resistant to one of the most potent chemotherapeutics, cisplatin. PCa cells survive and proliferate using fatty acid oxidation (FAO), and the dependence on fat utilization increases as the disease progresses toward a resistant form. Using a pool of patient biopsies, we validated the expression of a key enzyme carnitine palmitoyltransferase 1 A (CPT1A) needed for fat metabolism. We then discovered that a cisplatin prodrug, Platin-L, can inhibit the FAO of PCa cells by interacting with CPT1A. Synthesizing additional cisplatin-based prodrugs, we documented that the presence of an available carboxylic acid group near the long chain fatty acid linker on the Pt(IV) center is crucial for CPT1A binding. As a result of fat metabolism disruption by Platin-L, PCa cells transition to an adaptive glucose-dependent chemosensitive state. Potential clinical translation of Platin-L will require a delivery vehicle to direct it to the prostate tumor microenvironment. Thus, we incorporated Platin-L in a biodegradable prostate tumor-targeted orally administrable nanoformulation and demonstrated its safety and efficacy. The distinctive FAO inhibitory property of Platin-L can be of potential clinical relevance as it offers the use of cisplatin for otherwise resistant cancer.
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Affiliation(s)
- Akil A. Kalathil
- NanoTherapeutics
Research Laboratory, Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, Florida 33136, United States
| | - Subham Guin
- NanoTherapeutics
Research Laboratory, Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, Florida 33136, United States
| | - Akash Ashokan
- NanoTherapeutics
Research Laboratory, Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, Florida 33136, United States
- Sylvester
Comprehensive Cancer Centre, Miller School of Medicine, University of Miami, Miami, Florida 33136, United States
| | - Uttara Basu
- NanoTherapeutics
Research Laboratory, Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, Florida 33136, United States
- Sylvester
Comprehensive Cancer Centre, Miller School of Medicine, University of Miami, Miami, Florida 33136, United States
| | - Bapurao Surnar
- NanoTherapeutics
Research Laboratory, Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, Florida 33136, United States
- Sylvester
Comprehensive Cancer Centre, Miller School of Medicine, University of Miami, Miami, Florida 33136, United States
| | - Katiana S. Delma
- Department
of Pathology and Laboratory Medicine, Miller School of Medicine, University of Miami, Miami, Florida 33136, United States
| | - Leonor M. Lima
- Department
of Pathology and Laboratory Medicine, Miller School of Medicine, University of Miami, Miami, Florida 33136, United States
| | - Oleksandr N. Kryvenko
- Sylvester
Comprehensive Cancer Centre, Miller School of Medicine, University of Miami, Miami, Florida 33136, United States
- Department
of Pathology and Laboratory Medicine, Miller School of Medicine, University of Miami, Miami, Florida 33136, United States
- Department
of Radiation Oncology, Miller School of Medicine, University of Miami, Miami, Florida 33136, United States
- Desai Sethi
Urology Institute, Miller School of Medicine, University of Miami, Miami, Florida 33136, United States
| | - Shanta Dhar
- NanoTherapeutics
Research Laboratory, Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, Florida 33136, United States
- Sylvester
Comprehensive Cancer Centre, Miller School of Medicine, University of Miami, Miami, Florida 33136, United States
- Department
of Chemistry, University of Miami, Coral Gables, Florida 33146, United States
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4
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Babu T, Ghareeb H, Basu U, Schueffl H, Theiner S, Heffeter P, Koellensperger G, Metanis N, Gandin V, Ott I, Schmidt C, Gibson D. Oral Anticancer Heterobimetallic Pt IV -Au I Complexes Show High In Vivo Activity and Low Toxicity. Angew Chem Int Ed Engl 2023; 62:e202217233. [PMID: 36628505 DOI: 10.1002/anie.202217233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/01/2023] [Accepted: 01/09/2023] [Indexed: 01/12/2023]
Abstract
AuI -carbene and PtIV -AuI -carbene prodrugs display low to sub-μM activity against several cancer cell lines and overcome cisplatin (cisPt) resistance. Linking a cisPt-derived PtIV (phenylbutyrate) complex to a AuI -phenylimidazolylidene complex 2, yielded the most potent prodrug. While in vivo tests against Lewis Lung Carcinoma showed that the prodrug PtIV (phenylbutyrate)-AuI -carbene (7) and the 1 : 1 : 1 co-administration of cisPt: phenylbutyrate:2 efficiently inhibited tumor growth (≈95 %), much better than 2 (75 %) or cisPt (84 %), 7 exhibited only 5 % body weight loss compared to 14 % for 2, 20 % for cisPt and >30 % for the co-administration. 7 was much more efficient than 2 at inhibiting TrxR activity in the isolated enzyme, in cells and in the tumor, even though it was much less efficient than 2 at binding to selenocysteine peptides modeling the active site of TrxR. Organ distribution and laser-ablation (LA)-ICP-TOFMS imaging suggest that 7 arrives intact at the tumor and is activated there.
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Affiliation(s)
- Tomer Babu
- Institute for Drug Research, School of Pharmacy, The Hebrew University of Jerusalem, Jerusalem, 91120, Israel
| | - Hiba Ghareeb
- Institute of Chemistry, The Center for Nanoscience and Nanotechnology, Casali Center for Applied Chemistry, The Hebrew University of Jerusalem, Jerusalem, 9190401, Israel
| | - Uttara Basu
- Institute of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, 38106, Braunschweig, Germany
| | - Hemma Schueffl
- Center for Cancer Research and Comprehensive Cancer Center, Austria
| | - Sarah Theiner
- Institute of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Waehringer Strasse 38, 1090, Vienna, Austria
| | - Petra Heffeter
- Center for Cancer Research and Comprehensive Cancer Center, Austria
| | | | - Norman Metanis
- Institute of Chemistry, The Center for Nanoscience and Nanotechnology, Casali Center for Applied Chemistry, The Hebrew University of Jerusalem, Jerusalem, 9190401, Israel
| | - Valentina Gandin
- Dipartimento di Scienze del Farmaco, Universita di Padova, 35131, Padova, Italy
| | - Ingo Ott
- Institute of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, 38106, Braunschweig, Germany
| | - Claudia Schmidt
- Institute for Drug Research, School of Pharmacy, The Hebrew University of Jerusalem, Jerusalem, 91120, Israel
| | - Dan Gibson
- Institute for Drug Research, School of Pharmacy, The Hebrew University of Jerusalem, Jerusalem, 91120, Israel
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5
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Babu T, Ghareeb H, Basu U, Schueffl H, Theiner S, Heffeter P, Koellensperger G, Metanis N, Gandin V, Ott I, Schmidt C, Gibson D. Oral Anticancer Heterobimetallic PtIV‐AuI Complexes Show High In Vivo Activity and Low Toxicity. Angew Chem Int Ed Engl 2023. [DOI: 10.1002/ange.202217233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Tomer Babu
- Hebrew University of Jerusalem School of Pharmacy ISRAEL
| | - Hiba Ghareeb
- The Hebrew University of Jerusalem - Givat Ram Campus: Hebrew University of Jerusalem - Edmond J Safra Campus chemistry ISRAEL
| | - Uttara Basu
- Universität Braunschweig: Technische Universitat Braunschweig medicinal and pharmaceutical chemistry GERMANY
| | - Hemma Schueffl
- Medical University of Vienna: Medizinische Universitat Wien nstitute of Cancer Research and Comprehensive Cancer Cente AUSTRIA
| | - Sarah Theiner
- University of Vienna: Universitat Wien analytical chemistry AUSTRIA
| | - Petra Heffeter
- Medical University of Vienna: Medizinische Universitat Wien nstitute of Cancer Research and Comprehensive Cancer Cente AUSTRIA
| | | | - Norman Metanis
- The Hebrew University of Jerusalem - Givat Ram Campus: Hebrew University of Jerusalem - Edmond J Safra Campus chemistry ISRAEL
| | - Valentina Gandin
- University of Padova: Universita degli Studi di Padova Dipartimento di Scienze del Farmaco ITALY
| | - Ingo Ott
- Universität Braunschweig: Technische Universitat Braunschweig Medicinal and Pharmaceutical Chemistry GERMANY
| | | | - Dan Gibson
- Hebrew University of Jerusalem School of Pharmacy Institute of Drug ResearchSchool of Pharmacy 91120 Jerusalem ISRAEL
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6
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Gil‐Moles M, Türck S, Basu U, Pettenuzzo A, Bhattacharya S, Rajan A, Ma X, Büssing R, Wölker J, Burmeister H, Hoffmeister H, Schneeberg P, Prause A, Lippmann P, Kusi‐Nimarko J, Hassell‐Hart S, McGown A, Guest D, Lin Y, Notaro A, Vinck R, Karges J, Cariou K, Peng K, Qin X, Wang X, Skiba J, Szczupak Ł, Kowalski K, Schatzschneider U, Hemmert C, Gornitzka H, Milaeva ER, Nazarov AA, Gasser G, Spencer J, Ronconi L, Kortz U, Cinatl J, Bojkova D, Ott I. Metallodrug Profiling against SARS-CoV-2 Target Proteins Identifies Highly Potent Inhibitors of the S/ACE2 interaction and the Papain-like Protease PL pro. Chemistry 2021; 27:17928-17940. [PMID: 34714566 PMCID: PMC8653295 DOI: 10.1002/chem.202103258] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Indexed: 12/11/2022]
Abstract
The global spread of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has called for an urgent need for dedicated antiviral therapeutics. Metal complexes are commonly underrepresented in compound libraries that are used for screening in drug discovery campaigns, however, there is growing evidence for their role in medicinal chemistry. Based on previous results, we have selected more than 100 structurally diverse metal complexes for profiling as inhibitors of two relevant SARS-CoV-2 replication mechanisms, namely the interaction of the spike (S) protein with the ACE2 receptor and the papain-like protease PLpro . In addition to many well-established types of mononuclear experimental metallodrugs, the pool of compounds tested was extended to approved metal-based therapeutics such as silver sulfadiazine and thiomersal, as well as polyoxometalates (POMs). Among the mononuclear metal complexes, only a small number of active inhibitors of the S/ACE2 interaction was identified, with titanocene dichloride as the only strong inhibitor. However, among the gold and silver containing complexes many turned out to be very potent inhibitors of PLpro activity. Highly promising activity against both targets was noted for many POMs. Selected complexes were evaluated in antiviral SARS-CoV-2 assays confirming activity for gold complexes with N-heterocyclic carbene (NHC) or dithiocarbamato ligands, a silver NHC complex, titanocene dichloride as well as a POM compound. These studies might provide starting points for the design of metal-based SARS-CoV-2 antiviral agents.
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7
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Khodjoyan S, Remadna E, Dossmann H, Lesage D, Gontard G, Forté J, Hoffmeister H, Basu U, Ott I, Spence P, Waller ZAE, Salmain M, Bertrand B. [(C C)Au(N N)] + Complexes as a New Family of Anticancer Candidates: Synthesis, Characterization and Exploration of the Antiproliferative Properties. Chemistry 2021; 27:15773-15785. [PMID: 34436799 DOI: 10.1002/chem.202102751] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Indexed: 12/31/2022]
Abstract
A library of eleven cationic gold(III) complexes of the general formula [(C C)Au(N N)]+ when C C is either biphenyl or 4,4'-ditertbutyldiphenyl and N N is a bipyridine, phenanthroline or dipyridylamine derivative have been synthesized and characterized. Contrasting effects on the viability of the triple negative breast cancer cells MDA-MB-231 was observed from a preliminary screening. The antiproliferative activity of the seven most active complexes were further assayed on a larger panel of human cancer cells as well as on non-cancerous cells for comparison. Two complexes stood out for being either highly active or highly selective. Eventually, reactivity studies with biologically meaningful amino acids, glutathione, higher order DNA structures and thioredoxin reductase (TrxR) revealed a markedly different behavior from that of the well-known coordinatively isomeric [(C N C)Au(NHC)]+ structure. This makes the [(C C)Au(N N)]+ complexes a new class of organogold compounds with an original mode of action.
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Affiliation(s)
- Silva Khodjoyan
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 75005, Paris, France
| | - Edwyn Remadna
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 75005, Paris, France
| | - Héloïse Dossmann
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 75005, Paris, France
| | - Denis Lesage
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 75005, Paris, France
| | - Geoffrey Gontard
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 75005, Paris, France
| | - Jérémy Forté
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 75005, Paris, France
| | - Henrik Hoffmeister
- Institute of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Beethovenstrasse 55, 38106, Braunschweig, Germany
| | - Uttara Basu
- Institute of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Beethovenstrasse 55, 38106, Braunschweig, Germany
| | - Ingo Ott
- Institute of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Beethovenstrasse 55, 38106, Braunschweig, Germany
| | - Philip Spence
- School of Pharmacy, University of East Anglia, Norwich, NR4 7TJ, UK
| | - Zoë A E Waller
- School of Pharmacy, University of East Anglia, Norwich, NR4 7TJ, UK.,UCL School of Pharmacy, 29-39 Brunswick Square, London, WC1 N, UK
| | - Michèle Salmain
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 75005, Paris, France
| | - Benoît Bertrand
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, 75005, Paris, France
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Schmidt C, Babu T, Kostrhunova H, Timm A, Basu U, Ott I, Gandin V, Brabec V, Gibson D. Are Pt(IV) Prodrugs That Release Combretastatin A4 True Multi-action Prodrugs? J Med Chem 2021; 64:11364-11378. [PMID: 34342437 DOI: 10.1021/acs.jmedchem.1c00706] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
"Multi-action" Pt(IV) derivatives of cisplatin with combretastatin A4 (CA4) bioactive ligands that are conjugated to Pt(IV) by carbonate are unique because the ligand (IC50 < 10 nM) is dramatically 1000-folds more cytotoxic than cisplatin in vitro. The Pt(IV)-CA4 prodrugs were as cytotoxic as CA4 itself, indicating that the platinum moiety probably plays an insignificant role in triggering cytotoxicity, suggesting that the Pt(IV)-CA4 complexes act as prodrugs for CA4 rather than as true multi-action prodrugs. In vivo tests (Lewis lung carcinoma) show that ctc-[Pt(NH3)2(PhB)(CA4)Cl2] inhibited tumor growth by 93% compared to CA4 (67%), cisplatin (84%), and 1:1:1 cisplatin/CA4/PhB (85%) while displaying <5% body weight loss compared to cisplatin (20%) or CA4 (10%). In this case, and perhaps with other extremely potent bioactive ligands, platinum(IV) acts merely as a self-immolative carrier triggered by reduction in the cancer cell with only a minor contribution to cytotoxicity.
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Affiliation(s)
- Claudia Schmidt
- Institute for Drug Research, School of Pharmacy, The Hebrew University, 91120 Jerusalem, Israel
| | - Tomer Babu
- Institute for Drug Research, School of Pharmacy, The Hebrew University, 91120 Jerusalem, Israel
| | - Hana Kostrhunova
- Institute of Biophysics, Czech Academy of Sciences, Academy of Sciences, Kralovopolska 135, 61265 Brno, Czech Republic
| | - Annika Timm
- Institute of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Beethovenstrasse 55, 38106 Braunschweig, Germany
| | - Uttara Basu
- Institute of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Beethovenstrasse 55, 38106 Braunschweig, Germany
| | - Ingo Ott
- Institute of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Beethovenstrasse 55, 38106 Braunschweig, Germany
| | - Valentina Gandin
- Dipartimento di Scienze del Farmaco, Universita di Padova, Via Marzolo 5, 35131 Padova, Italy
| | - Viktor Brabec
- Institute of Biophysics, Czech Academy of Sciences, Academy of Sciences, Kralovopolska 135, 61265 Brno, Czech Republic.,Department of Biophysics, Faculty of Science, Palacky University in Olomouc, Slechtitelu 27, 78371 Olomouc, Czech Republic
| | - Dan Gibson
- Institute for Drug Research, School of Pharmacy, The Hebrew University, 91120 Jerusalem, Israel
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Zhou XQ, Carbo-Bague I, Siegler MA, Hilgendorf J, Basu U, Ott I, Liu R, Zhang L, Ramu V, IJzerman AP, Bonnet S. Rollover Cyclometalation vs Nitrogen Coordination in Tetrapyridyl Anticancer Gold(III) Complexes: Effect on Protein Interaction and Toxicity. JACS Au 2021; 1:380-395. [PMID: 34056633 PMCID: PMC8154207 DOI: 10.1021/jacsau.0c00104] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Indexed: 05/05/2023]
Abstract
In this work, a pair of gold(III) complexes derived from the analogous tetrapyridyl ligands H2biqbpy1 and H2biqbpy2 was prepared: the rollover, bis-cyclometalated [Au(biqbpy1)Cl ([1]Cl) and its isomer [Au(biqbpy2)Cl ([2]Cl). In [1]+, two pyridyl rings coordinate to the metal via a Au-C bond (C∧N∧N∧C coordination) and the two noncoordinated amine bridges of the ligand remain protonated, while in [2]+ all four pyridyl rings of the ligand coordinate to the metal via a Au-N bond (N∧N∧N∧N coordination), but both amine bridges are deprotonated. As a result, both complexes are monocationic, which allowed comparison of the sole effect of cyclometalation on the chemistry, protein interaction, and anticancer properties of the gold(III) compounds. Due to their identical monocationic charge and similar molecular shape, both complexes [1]Cl and [2]Cl displaced reference radioligand [3H]dofetilide equally well from cell membranes expressing the Kv11.1 (hERG) potassium channel, and more so than the tetrapyridyl ligands H2biqbpy1 and H2biqbpy2. By contrast, cyclometalation rendered [1]Cl coordinatively stable in the presence of biological thiols, while [2]Cl was reduced by a millimolar concentration of glutathione into metastable Au(I) species releasing the free ligand H2biqbpy2 and TrxR-inhibiting Au+ ions. The redox stability of [1]Cl dramatically decreased its thioredoxin reductase (TrxR) inhibition properties, compared to [2]Cl. On the other hand, unlike [2]Cl, [1]Cl aggregated into nanoparticles in FCS-containing medium, which resulted in much more efficient gold cellular uptake. [1]Cl had much more selective anticancer properties than [2]Cl and cisplatin, as it was almost 10 times more cytotoxic to human cancer cells (A549, A431, A375, and MCF7) than to noncancerous cells (MRC5). Mechanistic studies highlight the strikingly different mode of action of the two compounds: while for [1]Cl high gold cellular uptake, nuclear DNA damage, and interaction with hERG may contribute to cell killing, for [2]Cl extracellular reduction released TrxR-inhibiting Au+ ions that were taken up in minute amounts in the cytosol, and a toxic tetrapyridyl ligand also capable of binding to hERG. These results demonstrate that bis-cyclometalation is an appealing method to improve the redox stability of Au(III) compounds and to develop gold-based cytotoxic compounds that do not rely on TrxR inhibition to kill cancer cells.
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Affiliation(s)
- Xue-Quan Zhou
- Leiden
Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
| | - Imma Carbo-Bague
- Leiden
Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
- Department
of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia V5A 1S6, Canada
| | - Maxime A. Siegler
- Department
of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Jonathan Hilgendorf
- Leiden
Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
| | - Uttara Basu
- Institute
of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Beethovenstrasse 55, 38106 Braunschweig, Germany
| | - Ingo Ott
- Institute
of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Beethovenstrasse 55, 38106 Braunschweig, Germany
| | - Rongfang Liu
- Division
of Drug Discovery & Safety, Leiden Academic Centre for Drug Research, Leiden University, 2333 CC Leiden, The Netherlands
| | - Liyan Zhang
- Leiden
Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
| | - Vadde Ramu
- Leiden
Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
| | - Adriaan P. IJzerman
- Division
of Drug Discovery & Safety, Leiden Academic Centre for Drug Research, Leiden University, 2333 CC Leiden, The Netherlands
| | - Sylvestre Bonnet
- Leiden
Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands
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Guin S, Surnar B, Basu U, Dhar S. Abstract P07: Inhibition of androgen-regulated TMPRSS2 and lipogenic enzymes in prostate and lung carcinoma cell lines by a cisplatin prodrug. Clin Cancer Res 2021. [DOI: 10.1158/1557-3265.covid-19-21-p07] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
The main causative agent for the global pandemic of COVID-19 is caused by the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). Developing therapeutic strategies to stop the virus is the hour of need. According to the recent clinical reports, it is seen that an androgen-regulated host cell serine protease TMPRSS2 acts on the spike protein of the SARS-CoV-2 virus which interacts with the host angiotensin-converting enzyme 2 (ACE2) and enters the host cell to cause the infection. Reports also suggest that TMPRSS2 is regulated by androgen present in prostate cells and it is highly expressed in PCa patients. Our lab has recently synthesized a new cisplatin prodrug which is a conjugate of lauric acid and cisplatin that potentially works very effectively in various androgen dependent and independent prostate cancer (PCa) cells. The cisplatin prodrug unlike other conventional platinum drugs is involved in inhibition of one of the major metabolic pathways of the PCa cells. Preliminary results show that, the prodrug in combination with the anti-androgen bicalutamide has an increased inhibition on the expression of TMPRSS2 in androgen dependent PCa and lung carcinoma cells along with down-regulation of some the lipogenic enzymes in-vitro. Here, we propose that the prodrug inhibits one of the mitochondrial metabolic pathways making the PCa cells sensitive towards cisplatin-based chemotherapy along with reducing the expression of TMPRSS2. Once completed, our work will provide an inside story of cisplatin prodrug mediated alteration of lipogenesis of cells in PCa tumor microenvironment resulting in a platform that has the potential to reduce the burden of cancer aggressiveness in both androgen dependent and independent PCa and also can be used as a potent chemotherapeutic agent against COVID-19.
Citation Format: Subham Guin, Bapurao Surnar, Uttara Basu, Shanta Dhar. Inhibition of androgen-regulated TMPRSS2 and lipogenic enzymes in prostate and lung carcinoma cell lines by a cisplatin prodrug [abstract]. In: Proceedings of the AACR Virtual Meeting: COVID-19 and Cancer; 2021 Feb 3-5. Philadelphia (PA): AACR; Clin Cancer Res 2021;27(6_Suppl):Abstract nr P07.
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Affiliation(s)
- Subham Guin
- 1University of Miami Miller School of Medicine, Miami, FL,
| | - Bapurao Surnar
- 1University of Miami Miller School of Medicine, Miami, FL,
| | | | - Shanta Dhar
- 1University of Miami Miller School of Medicine, Miami, FL,
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11
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Bhattacharya S, Basu U, Haouas M, Su P, Espenship MF, Wang F, Solé‐Daura A, Taffa DH, Wark M, Poblet JM, Laskin J, Cadot E, Kortz U. Discovery and Supramolecular Interactions of Neutral Palladium-Oxo Clusters Pd 16 and Pd 24. Angew Chem Int Ed Engl 2021; 60:3632-3639. [PMID: 33104280 PMCID: PMC7898824 DOI: 10.1002/anie.202010690] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 10/23/2020] [Indexed: 01/27/2023]
Abstract
We report on the synthesis, structure, and physicochemical characterization of the first three examples of neutral palladium-oxo clusters (POCs). The 16-palladium(II)-oxo cluster [Pd16 O24 (OH)8 ((CH3 )2 As)8 ] (Pd16 ) comprises a cyclic palladium-oxo unit capped by eight dimethylarsinate groups. The chloro-derivative [Pd16 Na2 O26 (OH)3 Cl3 ((CH3 )2 As)8 ] (Pd16 Cl) was also prepared, which forms a highly stable 3D supramolecular lattice via strong intermolecular interactions. The 24-palladium(II)-oxo cluster [Pd24 O44 (OH)8 ((CH3 )2 As)16 ] (Pd24 ) can be considered as a bicapped derivative of Pd16 with a tetra-palladium-oxo unit grafted on either side. The three compounds were fully characterized 1) in the solid state by single-crystal and powder XRD, IR, TGA, and solid-state 1 H and 13 C NMR spectroscopy, 2) in solution by 1 H, 13 C NMR and 1 H DOSY spectroscopic methods, and 3) in the gas phase by electrospray ionization mass spectrometry (ESI-MS).
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Affiliation(s)
- Saurav Bhattacharya
- Department of Life Sciences and ChemistryJacobs UniversityCampus Ring 128759BremenGermany
| | - Uttara Basu
- Department of Life Sciences and ChemistryJacobs UniversityCampus Ring 128759BremenGermany
| | - Mohamed Haouas
- Institut Lavoisier de VersaillesCNRS, UVSQUniversité Paris-SaclayVersaillesFrance
| | - Pei Su
- Department of ChemistryPurdue University560 Oval DriveWest LafayetteIN47907USA
| | | | - Fei Wang
- Departament de Química Física i InorgànicaUniversitat Rovira i Virgili, Marcel lí Domingo 143007TarragonaSpain
| | - Albert Solé‐Daura
- Departament de Química Física i InorgànicaUniversitat Rovira i Virgili, Marcel lí Domingo 143007TarragonaSpain
| | - Dereje H. Taffa
- Institute of ChemistryCarl von Ossietzky University Oldenburg26129OldenburgGermany
| | - Michael Wark
- Institute of ChemistryCarl von Ossietzky University Oldenburg26129OldenburgGermany
| | - Josep M. Poblet
- Departament de Química Física i InorgànicaUniversitat Rovira i Virgili, Marcel lí Domingo 143007TarragonaSpain
| | - Julia Laskin
- Department of ChemistryPurdue University560 Oval DriveWest LafayetteIN47907USA
| | - Emmanuel Cadot
- Institut Lavoisier de VersaillesCNRS, UVSQUniversité Paris-SaclayVersaillesFrance
| | - Ulrich Kortz
- Department of Life Sciences and ChemistryJacobs UniversityCampus Ring 128759BremenGermany
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Bhattacharya S, Basu U, Haouas M, Su P, Espenship MF, Wang F, Solé‐Daura A, Taffa DH, Wark M, Poblet JM, Laskin J, Cadot E, Kortz U. Discovery and Supramolecular Interactions of Neutral Palladium‐Oxo Clusters Pd
16
and Pd
24. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202010690] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Saurav Bhattacharya
- Department of Life Sciences and Chemistry Jacobs University Campus Ring 1 28759 Bremen Germany
| | - Uttara Basu
- Department of Life Sciences and Chemistry Jacobs University Campus Ring 1 28759 Bremen Germany
| | - Mohamed Haouas
- Institut Lavoisier de Versailles CNRS, UVSQ Université Paris-Saclay Versailles France
| | - Pei Su
- Department of Chemistry Purdue University 560 Oval Drive West Lafayette IN 47907 USA
| | | | - Fei Wang
- Departament de Química Física i Inorgànica Universitat Rovira i Virgili, Marcel lí Domingo 1 43007 Tarragona Spain
| | - Albert Solé‐Daura
- Departament de Química Física i Inorgànica Universitat Rovira i Virgili, Marcel lí Domingo 1 43007 Tarragona Spain
| | - Dereje H. Taffa
- Institute of Chemistry Carl von Ossietzky University Oldenburg 26129 Oldenburg Germany
| | - Michael Wark
- Institute of Chemistry Carl von Ossietzky University Oldenburg 26129 Oldenburg Germany
| | - Josep M. Poblet
- Departament de Química Física i Inorgànica Universitat Rovira i Virgili, Marcel lí Domingo 1 43007 Tarragona Spain
| | - Julia Laskin
- Department of Chemistry Purdue University 560 Oval Drive West Lafayette IN 47907 USA
| | - Emmanuel Cadot
- Institut Lavoisier de Versailles CNRS, UVSQ Université Paris-Saclay Versailles France
| | - Ulrich Kortz
- Department of Life Sciences and Chemistry Jacobs University Campus Ring 1 28759 Bremen Germany
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13
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Gil‐Moles M, Basu U, Büssing R, Hoffmeister H, Türck S, Varchmin A, Ott I. Gold Metallodrugs to Target Coronavirus Proteins: Inhibitory Effects on the Spike-ACE2 Interaction and on PLpro Protease Activity by Auranofin and Gold Organometallics*. Chemistry 2020; 26:15140-15144. [PMID: 32915473 PMCID: PMC7756435 DOI: 10.1002/chem.202004112] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Indexed: 02/06/2023]
Abstract
Gold complexes have a long tradition in medicine and for many examples antirheumatic, anticancer or anti-infective effects have been confirmed. Herein, we evaluated the lead compound Auranofin and five selected gold organometallics as inhibitors of two relevant drug targets of severe acute respiratory syndrome coronaviruses (SARS-CoV). The gold metallodrugs were effective inhibitors of the interaction of the SARS-CoV-2 spike protein with the angiotensin converting enzyme 2 (ACE2) host receptor and might thus interfere with the viral entry process. The gold metallodrugs were also efficient inhibitors of the papain-like protease (PLpro) of SARS-CoV-1 and SARS-CoV-2, which is a key enzyme in the viral replication. Regarding PLpro from SARS-CoV-2, the here reported inhibitors are among the very first experimentally confirmed examples with activity against this target enzyme. Importantly, the activity of the complexes against both PLpro enzymes correlated with the ability of the inhibitors to remove zinc ions from the labile zinc center of the enzyme. Taken together, the results of this pilot study suggest further evaluation of gold complexes as SARS-CoV antiviral drugs.
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Affiliation(s)
- Maria Gil‐Moles
- Institute of Medicinal and Pharmaceutical ChemistryTechnische Universität BraunschweigBeethovenstrasse 5538106BraunschweigGermany
| | - Uttara Basu
- Institute of Medicinal and Pharmaceutical ChemistryTechnische Universität BraunschweigBeethovenstrasse 5538106BraunschweigGermany
| | - Rolf Büssing
- Institute of Medicinal and Pharmaceutical ChemistryTechnische Universität BraunschweigBeethovenstrasse 5538106BraunschweigGermany
| | - Henrik Hoffmeister
- Institute of Medicinal and Pharmaceutical ChemistryTechnische Universität BraunschweigBeethovenstrasse 5538106BraunschweigGermany
| | - Sebastian Türck
- Institute of Medicinal and Pharmaceutical ChemistryTechnische Universität BraunschweigBeethovenstrasse 5538106BraunschweigGermany
| | - Agnieszka Varchmin
- Institute of Medicinal and Pharmaceutical ChemistryTechnische Universität BraunschweigBeethovenstrasse 5538106BraunschweigGermany
| | - Ingo Ott
- Institute of Medicinal and Pharmaceutical ChemistryTechnische Universität BraunschweigBeethovenstrasse 5538106BraunschweigGermany
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14
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15
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Notaro A, Frei A, Rubbiani R, Jakubaszek M, Basu U, Koch S, Mari C, Dotou M, Blacque O, Gouyon J, Bedioui F, Rotthowe N, Winter RF, Goud B, Ferrari S, Tharaud M, Řezáčová M, Humajová J, Tomšík P, Gasser G. Ruthenium(II) Complex Containing a Redox-Active Semiquinonate Ligand as a Potential Chemotherapeutic Agent: From Synthesis to In Vivo Studies. J Med Chem 2020; 63:5568-5584. [PMID: 32319768 DOI: 10.1021/acs.jmedchem.0c00431] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Chemotherapy remains one of the dominant treatments to cure cancer. However, due to the many inherent drawbacks, there is a search for new chemotherapeutic drugs. Many classes of compounds have been investigated over the years to discover new targets and synergistic mechanisms of action including multicellular targets. In this work, we designed a new chemotherapeutic drug candidate against cancer, namely, [Ru(DIP)2(sq)](PF6) (Ru-sq) (DIP = 4,7-diphenyl-1,10-phenanthroline; sq = semiquinonate ligand). The aim was to combine the great potential expressed by Ru(II) polypyridyl complexes and the singular redox and biological properties associated with the catecholate moiety. Experimental evidence (e.g., X-ray crystallography, electron paramagnetic resonance, electrochemistry) demonstrates that the semiquinonate is the preferred oxidation state of the dioxo ligand in this complex. The biological activity of Ru-sq was then scrutinized in vitro and in vivo, and the results highlight the promising potential of this complex as a chemotherapeutic agent against cancer.
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Affiliation(s)
- Anna Notaro
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, F-75005 Paris, France
| | - Angelo Frei
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Riccardo Rubbiani
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Marta Jakubaszek
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, F-75005 Paris, France.,Institut Curie, PSL University, CNRS UMR 144, F-75005 Paris, France
| | - Uttara Basu
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, F-75005 Paris, France
| | - Severin Koch
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Cristina Mari
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Mazzarine Dotou
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, F-75005 Paris, France
| | - Olivier Blacque
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland
| | - Jérémie Gouyon
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Team Synthèse, Electrochimie, Imagerie et Systèmes Analytiques pour le Diagnostic, F-75005 Paris, France
| | - Fethi Bedioui
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Team Synthèse, Electrochimie, Imagerie et Systèmes Analytiques pour le Diagnostic, F-75005 Paris, France
| | - Nils Rotthowe
- Department of Chemistry, University of Konstanz, Universitätsstrasse 10, D-78457 Konstanz, Germany
| | - Rainer F Winter
- Department of Chemistry, University of Konstanz, Universitätsstrasse 10, D-78457 Konstanz, Germany
| | - Bruno Goud
- Institut Curie, PSL University, CNRS UMR 144, F-75005 Paris, France
| | - Stefano Ferrari
- Institute of Molecular Cancer Research, University of Zurich, CH-8057 Zurich, Switzerland.,Institute of Molecular Genetics of the Czech Academy of Sciences, Videnska 1083, 143 00 Prague, Czech Republic
| | - Mickaël Tharaud
- Université de Paris, Institut de physique du Globe de Paris, CNRS, F-75005 Paris, France
| | - Martina Řezáčová
- Department of Medical Biochemistry, Faculty of Medicine in Hradec Kralove, Charles University, Šimkova 870, 500 03 Hradec Kralove, Czech Republic
| | - Jana Humajová
- Institute of Biophysics and Informatics, First Faculty of Medicine, Charles University in Prague, 150 06 Prague, Czech Republic
| | - Pavel Tomšík
- Department of Medical Biochemistry, Faculty of Medicine in Hradec Kralove, Charles University, Šimkova 870, 500 03 Hradec Kralove, Czech Republic
| | - Gilles Gasser
- Chimie ParisTech, PSL University, CNRS, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, F-75005 Paris, France
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16
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Cheng X, Haeberle S, Shytaj IL, Gama-Brambila RA, Theobald J, Ghafoory S, Wölker J, Basu U, Schmidt C, Timm A, Taškova K, Bauer AS, Hoheisel J, Tsopoulidis N, Fackler OT, Savarino A, Andrade-Navarro MA, Ott I, Lusic M, Hadaschik EN, Wölfl S. NHC-gold compounds mediate immune suppression through induction of AHR-TGFβ1 signalling in vitro and in scurfy mice. Commun Biol 2020; 3:10. [PMID: 31909202 PMCID: PMC6941985 DOI: 10.1038/s42003-019-0716-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 11/28/2019] [Indexed: 12/17/2022] Open
Abstract
Gold compounds have a long history of use as immunosuppressants, but their precise mechanism of action is not completely understood. Using our recently developed liver-on-a-chip platform we now show that gold compounds containing planar N-heterocyclic carbene (NHC) ligands are potent ligands for the aryl hydrocarbon receptor (AHR). Further studies showed that the lead compound (MC3) activates TGFβ1 signaling and suppresses CD4+ T-cell activation in vitro, in human and mouse T cells. Conversely, genetic knockdown or chemical inhibition of AHR activity or of TGFβ1-SMAD-mediated signaling offsets the MC3-mediated immunosuppression. In scurfy mice, a mouse model of human immunodysregulation polyendocrinopathy enteropathy X-linked syndrome, MC3 treatment reduced autoimmune phenotypes and extended lifespan from 24 to 58 days. Our findings suggest that the immunosuppressive activity of gold compounds can be improved by introducing planar NHC ligands to activate the AHR-associated immunosuppressive pathway, thus expanding their potential clinical application for autoimmune diseases.
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Affiliation(s)
- Xinlai Cheng
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Im Neuenheimer Feld 364, D-69120 Heidelberg, Germany
- Buchmann Institute for Molecular Life Sciences, Goethe University Frankfurt, Max-von-Laue-Str. 15, D-60438 Frankfurt am Main, Germany
| | - Stefanie Haeberle
- Department of Dermatology, University Hospital Heidelberg, Im Neuenheimer Feld 440, 69120 Heidelberg, Germany
| | - Iart Luca Shytaj
- Department of Infectious Diseases Integrative Virology, Heidelberg University, Heidelberg, Germany
- German Center for Infection Research (DZIF), Heidelberg, Germany
| | - Rodrigo. A. Gama-Brambila
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Im Neuenheimer Feld 364, D-69120 Heidelberg, Germany
| | - Jannick Theobald
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Im Neuenheimer Feld 364, D-69120 Heidelberg, Germany
| | - Shahrouz Ghafoory
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Im Neuenheimer Feld 364, D-69120 Heidelberg, Germany
| | - Jessica Wölker
- Institute of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Beethovenstrasse 55, 38106 Braunschweig, Germany
- PVZ — Center of Pharmaceutical Engineering, Franz-Liszt-Straße 35A, 38106 Braunschweig, Germany
| | - Uttara Basu
- Institute of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Beethovenstrasse 55, 38106 Braunschweig, Germany
- PVZ — Center of Pharmaceutical Engineering, Franz-Liszt-Straße 35A, 38106 Braunschweig, Germany
| | - Claudia Schmidt
- Institute of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Beethovenstrasse 55, 38106 Braunschweig, Germany
- PVZ — Center of Pharmaceutical Engineering, Franz-Liszt-Straße 35A, 38106 Braunschweig, Germany
| | - Annika Timm
- Institute of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Beethovenstrasse 55, 38106 Braunschweig, Germany
- PVZ — Center of Pharmaceutical Engineering, Franz-Liszt-Straße 35A, 38106 Braunschweig, Germany
| | - Katerina Taškova
- Biozentrum I, Hans-Dieter-Hüsch-Weg 15, 55128 Mainz, Germany
- Faculty of Biology, Johannes Gutenberg Universität, Mainz, Germany
- School of Computer Science, The University of Auckland, Auckland, New Zealand
| | | | - Jörg Hoheisel
- Functional Genome Analysis, DKFZ, Heidelberg, Germany
| | - Nikolaos Tsopoulidis
- Department of Dermatology, University Hospital Heidelberg, Im Neuenheimer Feld 440, 69120 Heidelberg, Germany
| | - Oliver T. Fackler
- Department of Dermatology, University Hospital Heidelberg, Im Neuenheimer Feld 440, 69120 Heidelberg, Germany
| | - Andrea Savarino
- Present Address: Department of Infectious and Immune-Mediated Diseases, Italian Institute of Health, Rome, Italy
| | - Miguel A. Andrade-Navarro
- Biozentrum I, Hans-Dieter-Hüsch-Weg 15, 55128 Mainz, Germany
- Faculty of Biology, Johannes Gutenberg Universität, Mainz, Germany
| | - Ingo Ott
- Institute of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Beethovenstrasse 55, 38106 Braunschweig, Germany
- PVZ — Center of Pharmaceutical Engineering, Franz-Liszt-Straße 35A, 38106 Braunschweig, Germany
| | - Marina Lusic
- Department of Infectious Diseases Integrative Virology, Heidelberg University, Heidelberg, Germany
- German Center for Infection Research (DZIF), Heidelberg, Germany
| | - Eva N. Hadaschik
- Department of Dermatology, University Hospital Heidelberg, Im Neuenheimer Feld 440, 69120 Heidelberg, Germany
| | - Stefan. Wölfl
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Im Neuenheimer Feld 364, D-69120 Heidelberg, Germany
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Ortega E, Zamora A, Basu U, Lippmann P, Rodríguez V, Janiak C, Ott I, Ruiz J. An Erlotinib gold(I) conjugate for combating triple-negative breast cancer. J Inorg Biochem 2019; 203:110910. [PMID: 31683128 DOI: 10.1016/j.jinorgbio.2019.110910] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Revised: 10/16/2019] [Accepted: 10/27/2019] [Indexed: 12/24/2022]
Abstract
An Erlotinib triphenylphosphane gold(I) conjugate has been prepared from AuCl(PPh3) and its crystal structure has been established by X-ray diffraction, showing a metallo-helicate formation. IC50 values of the new gold conjugate were calculated towards a panel of human tumor cell lines representative of breast (MCF-7, MDA-MB-231) and colon (HT-29) cancer cells. Overall, the gold conjugate exhibited higher cytotoxic activity than that of Erlotinib against the cancer cells studied. Particularly, the antiproliferative effect of the conjugate demonstrated to be 68-fold higher than Erlotinib in highly metastatic and triple negative MDA-MB-231 cell line. The gold conjugate caused DNA damage, reactive oxygen species (ROS) increase and induced apoptosis. Flow cytometry analysis showed that the conjugate induces significant arrest in S and G2/M phases primarily, whereas Erlotinib, as an inhibitor of epidermal growth factor receptor (EGFR), blocks G1/S transition and increases G1 cell population.
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Affiliation(s)
- Enrique Ortega
- Departamento de Química Inorgánica, Universidad de Murcia and Institute for Bio-Health Research of Murcia (IMIB-Arrixaca), E-30071 Murcia, Spain
| | - Ana Zamora
- Department of Chemistry, KU Leuven, Celestijnenlaan 200D, 3001 Heverlee, Belgium
| | - Uttara Basu
- Institute of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Beethovenstrasse 55, 38106 Braunschweig, Germany
| | - Petra Lippmann
- Institute of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Beethovenstrasse 55, 38106 Braunschweig, Germany
| | - Venancio Rodríguez
- Departamento de Química Inorgánica, Universidad de Murcia and Institute for Bio-Health Research of Murcia (IMIB-Arrixaca), E-30071 Murcia, Spain
| | - Christoph Janiak
- Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstr 1, 40225 Düsseldorf, Germany
| | - Ingo Ott
- Institute of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Beethovenstrasse 55, 38106 Braunschweig, Germany
| | - José Ruiz
- Departamento de Química Inorgánica, Universidad de Murcia and Institute for Bio-Health Research of Murcia (IMIB-Arrixaca), E-30071 Murcia, Spain.
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18
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Surnar B, Kamran MZ, Shah AS, Basu U, Kolishetti N, Deo S, Jayaweera DT, Daunert S, Dhar S. Orally Administrable Therapeutic Synthetic Nanoparticle for Zika Virus. ACS Nano 2019. [PMID: 31603314 DOI: 10.1021/acsnano.9b0280710.1021/acsnano.9b02807.s001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The spread of Zika virus (ZIKV) infection across the USA and various countries in the last three years will not only have a direct impact on the U.S. health care system but has caused international concerns as well. The ultimate impact of ZIKV infection remains to be understood. Currently, there are no therapeutic or vaccine options available to protect those infected by ZIKV. The drug ivermectin (IVM) was found to be a viable agent for the prevention of transmission of ZIKV. Ivermectin is unstable in the presence of water and does not remain in adequate concentration in the human bloodstream to be effective in treatment for ZIKV. Biodegradable nanoparticles would aid in the delivery of ivermectin by providing a high enough concentration of drug and ensuring the drug is gradually released to maintain an appropriate level in the body. The overall goal of this study was to develop and optimize an orally administrable nanoformulation of IVM which can circulate in the blood for a long period for efficient delivery. To achieve the goal, we synthesized and optimized a synthetic nanoformulation of IVM for oral use which can cross the intestinal epithelial barrier to enter the bloodstream. Our studies documented that when delivered with the synthetic nanoparticle (NP), IVM can be accumulated in the blood at a higher concentration and preliminary studies highlighted that NP delivered IVM has the ability to target nonstructural 1 protein of ZIKV. For potential clinical relevance, long-term storable formulation of IVM-nanoparticle in dry powder state for inclusion in a capsule form and cryoprotectant containing frozen forms revealed promising findings. Further, our preliminary in vitro studies documented that ivermectin crosses the placental barrier, thus making it unsafe for the pregnant ZIKV population, whereas the ivermectin-loaded nanoparticle did not show any significant placental barrier crossing, thus indicating its potential suitability for such population. We envision that this work will fill a great unmet need by developing safer and more effective therapies for the treatment of viral infections, including ZIKV.
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Affiliation(s)
- Bapurao Surnar
- Department of Biochemistry and Molecular Biology, Leonard M. Miller School of Medicine , University of Miami , 1011 NW 15th Street , Miami , Florida 33136 , United States
- Dr. JT Macdonald Foundation Biomedical Nanotechnology Institute of the University of Miami, Leonard M. Miller School of Medicine , University of Miami , 1951 NW 7th Avenue, Suite 475 , Miami , Florida 33136 , United States
| | - Mohammad Z Kamran
- Department of Biochemistry and Molecular Biology, Leonard M. Miller School of Medicine , University of Miami , 1011 NW 15th Street , Miami , Florida 33136 , United States
- Dr. JT Macdonald Foundation Biomedical Nanotechnology Institute of the University of Miami, Leonard M. Miller School of Medicine , University of Miami , 1951 NW 7th Avenue, Suite 475 , Miami , Florida 33136 , United States
| | - Anuj S Shah
- Department of Biochemistry and Molecular Biology, Leonard M. Miller School of Medicine , University of Miami , 1011 NW 15th Street , Miami , Florida 33136 , United States
| | - Uttara Basu
- Department of Biochemistry and Molecular Biology, Leonard M. Miller School of Medicine , University of Miami , 1011 NW 15th Street , Miami , Florida 33136 , United States
| | - Nagesh Kolishetti
- Department of Biochemistry and Molecular Biology, Leonard M. Miller School of Medicine , University of Miami , 1011 NW 15th Street , Miami , Florida 33136 , United States
- Department of Immunology and Nano-Medicine, Herbert Wertheim College of Medicine , Florida International University , Miami , Florida 33199 , United States
| | - Sapna Deo
- Department of Biochemistry and Molecular Biology, Leonard M. Miller School of Medicine , University of Miami , 1011 NW 15th Street , Miami , Florida 33136 , United States
- Sylvester Comprehensive Cancer Center, Leonard M. Miller School of Medicine , University of Miami , 1475 NW 12th Avenue , Miami , Florida 33136 , United States
| | - Dushyantha T Jayaweera
- University of Miami Clinical and Translational Science Institute, Leonard M. Miller School of Medicine , University of Miami , 1120 NW 14th Street, Suite 710 , Miami , Florida 33136 , United States
- Department of Medicine, Miami Center for AIDS Research, Leonard M. Miller School of Medicine , University of Miami , 1580 NW 10th Avenue , Miami , Florida 33136 , United States
| | - Sylvia Daunert
- Department of Biochemistry and Molecular Biology, Leonard M. Miller School of Medicine , University of Miami , 1011 NW 15th Street , Miami , Florida 33136 , United States
- Dr. JT Macdonald Foundation Biomedical Nanotechnology Institute of the University of Miami, Leonard M. Miller School of Medicine , University of Miami , 1951 NW 7th Avenue, Suite 475 , Miami , Florida 33136 , United States
- Sylvester Comprehensive Cancer Center, Leonard M. Miller School of Medicine , University of Miami , 1475 NW 12th Avenue , Miami , Florida 33136 , United States
- University of Miami Clinical and Translational Science Institute, Leonard M. Miller School of Medicine , University of Miami , 1120 NW 14th Street, Suite 710 , Miami , Florida 33136 , United States
| | - Shanta Dhar
- Department of Biochemistry and Molecular Biology, Leonard M. Miller School of Medicine , University of Miami , 1011 NW 15th Street , Miami , Florida 33136 , United States
- Dr. JT Macdonald Foundation Biomedical Nanotechnology Institute of the University of Miami, Leonard M. Miller School of Medicine , University of Miami , 1951 NW 7th Avenue, Suite 475 , Miami , Florida 33136 , United States
- Sylvester Comprehensive Cancer Center, Leonard M. Miller School of Medicine , University of Miami , 1475 NW 12th Avenue , Miami , Florida 33136 , United States
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Surnar B, Kamran MZ, Shah AS, Basu U, Kolishetti N, Deo S, Jayaweera DT, Daunert S, Dhar S. Orally Administrable Therapeutic Synthetic Nanoparticle for Zika Virus. ACS Nano 2019; 13:11034-11048. [PMID: 31603314 PMCID: PMC7053157 DOI: 10.1021/acsnano.9b02807] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
The spread of Zika virus (ZIKV) infection across the USA and various countries in the last three years will not only have a direct impact on the U.S. health care system but has caused international concerns as well. The ultimate impact of ZIKV infection remains to be understood. Currently, there are no therapeutic or vaccine options available to protect those infected by ZIKV. The drug ivermectin (IVM) was found to be a viable agent for the prevention of transmission of ZIKV. Ivermectin is unstable in the presence of water and does not remain in adequate concentration in the human bloodstream to be effective in treatment for ZIKV. Biodegradable nanoparticles would aid in the delivery of ivermectin by providing a high enough concentration of drug and ensuring the drug is gradually released to maintain an appropriate level in the body. The overall goal of this study was to develop and optimize an orally administrable nanoformulation of IVM which can circulate in the blood for a long period for efficient delivery. To achieve the goal, we synthesized and optimized a synthetic nanoformulation of IVM for oral use which can cross the intestinal epithelial barrier to enter the bloodstream. Our studies documented that when delivered with the synthetic nanoparticle (NP), IVM can be accumulated in the blood at a higher concentration and preliminary studies highlighted that NP delivered IVM has the ability to target nonstructural 1 protein of ZIKV. For potential clinical relevance, long-term storable formulation of IVM-nanoparticle in dry powder state for inclusion in a capsule form and cryoprotectant containing frozen forms revealed promising findings. Further, our preliminary in vitro studies documented that ivermectin crosses the placental barrier, thus making it unsafe for the pregnant ZIKV population, whereas the ivermectin-loaded nanoparticle did not show any significant placental barrier crossing, thus indicating its potential suitability for such population. We envision that this work will fill a great unmet need by developing safer and more effective therapies for the treatment of viral infections, including ZIKV.
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Affiliation(s)
- Bapurao Surnar
- Department of Biochemistry and Molecular Biology, Leonard M. Miller School of Medicine, University of Miami, 1011 NW 15th Street, Miami, Florida 33136, United States
- Dr. JT Macdonald Foundation Biomedical Nanotechnology Institute of the University of Miami, Leonard M. Miller School of Medicine, University of Miami, 1951 NW 7th Avenue, Suite 475, Miami, Florida 33136, United States
| | - Mohammad Z. Kamran
- Department of Biochemistry and Molecular Biology, Leonard M. Miller School of Medicine, University of Miami, 1011 NW 15th Street, Miami, Florida 33136, United States
- Dr. JT Macdonald Foundation Biomedical Nanotechnology Institute of the University of Miami, Leonard M. Miller School of Medicine, University of Miami, 1951 NW 7th Avenue, Suite 475, Miami, Florida 33136, United States
| | - Anuj S. Shah
- Department of Biochemistry and Molecular Biology, Leonard M. Miller School of Medicine, University of Miami, 1011 NW 15th Street, Miami, Florida 33136, United States
| | - Uttara Basu
- Department of Biochemistry and Molecular Biology, Leonard M. Miller School of Medicine, University of Miami, 1011 NW 15th Street, Miami, Florida 33136, United States
| | - Nagesh Kolishetti
- Department of Biochemistry and Molecular Biology, Leonard M. Miller School of Medicine, University of Miami, 1011 NW 15th Street, Miami, Florida 33136, United States
- Department of Immunology and Nano-Medicine, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida 33199, United States
| | - Sapna Deo
- Department of Biochemistry and Molecular Biology, Leonard M. Miller School of Medicine, University of Miami, 1011 NW 15th Street, Miami, Florida 33136, United States
- Sylvester Comprehensive Cancer Center, Leonard M. Miller School of Medicine, University of Miami, 1475 NW 12th Avenue, Miami, Florida 33136, United States
| | - Dushyantha T. Jayaweera
- University of Miami Clinical and Translational Science Institute, Leonard M. Miller School of Medicine, University of Miami, 1120 NW 14th Street, Suite 710, Miami, Florida 33136, United States
- Department of Medicine, Miami Center for AIDS Research, Leonard M. Miller School of Medicine, University of Miami, 1580 NW 10th Avenue, Miami, Florida 33136, United States
| | - Sylvia Daunert
- Department of Biochemistry and Molecular Biology, Leonard M. Miller School of Medicine, University of Miami, 1011 NW 15th Street, Miami, Florida 33136, United States
- Dr. JT Macdonald Foundation Biomedical Nanotechnology Institute of the University of Miami, Leonard M. Miller School of Medicine, University of Miami, 1951 NW 7th Avenue, Suite 475, Miami, Florida 33136, United States
- Sylvester Comprehensive Cancer Center, Leonard M. Miller School of Medicine, University of Miami, 1475 NW 12th Avenue, Miami, Florida 33136, United States
- University of Miami Clinical and Translational Science Institute, Leonard M. Miller School of Medicine, University of Miami, 1120 NW 14th Street, Suite 710, Miami, Florida 33136, United States
| | - Shanta Dhar
- Department of Biochemistry and Molecular Biology, Leonard M. Miller School of Medicine, University of Miami, 1011 NW 15th Street, Miami, Florida 33136, United States
- Dr. JT Macdonald Foundation Biomedical Nanotechnology Institute of the University of Miami, Leonard M. Miller School of Medicine, University of Miami, 1951 NW 7th Avenue, Suite 475, Miami, Florida 33136, United States
- Sylvester Comprehensive Cancer Center, Leonard M. Miller School of Medicine, University of Miami, 1475 NW 12th Avenue, Miami, Florida 33136, United States
- Corresponding Author:
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20
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Karges J, Basu U, Blacque O, Chao H, Gasser G. Polymeric Encapsulation of Novel Homoleptic Bis(dipyrrinato) Zinc(II) Complexes with Long Lifetimes for Applications as Photodynamic Therapy Photosensitisers. Angew Chem Int Ed Engl 2019; 58:14334-14340. [DOI: 10.1002/anie.201907856] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Indexed: 01/14/2023]
Affiliation(s)
- Johannes Karges
- Chimie ParisTech PSL University CNRS Institute of Chemistry for Life and Health Sciences Laboratory for Inorganic Chemical Biology 75005 Paris France
| | - Uttara Basu
- Chimie ParisTech PSL University CNRS Institute of Chemistry for Life and Health Sciences Laboratory for Inorganic Chemical Biology 75005 Paris France
| | - Olivier Blacque
- Department of Chemistry University of Zurich Winterthurerstrasse 190 8057 Zurich Switzerland
| | - Hui Chao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry School of Chemistry Sun Yat-sen University 510275 Guangzhou P. R. China
| | - Gilles Gasser
- Chimie ParisTech PSL University CNRS Institute of Chemistry for Life and Health Sciences Laboratory for Inorganic Chemical Biology 75005 Paris France
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21
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Karges J, Basu U, Blacque O, Chao H, Gasser G. Polymeric Encapsulation of Novel Homoleptic Bis(dipyrrinato) Zinc(II) Complexes with Long Lifetimes for Applications as Photodynamic Therapy Photosensitisers. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201907856] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Johannes Karges
- Chimie ParisTech PSL University CNRS Institute of Chemistry for Life and Health Sciences Laboratory for Inorganic Chemical Biology 75005 Paris France
| | - Uttara Basu
- Chimie ParisTech PSL University CNRS Institute of Chemistry for Life and Health Sciences Laboratory for Inorganic Chemical Biology 75005 Paris France
| | - Olivier Blacque
- Department of Chemistry University of Zurich Winterthurerstrasse 190 8057 Zurich Switzerland
| | - Hui Chao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry School of Chemistry Sun Yat-sen University 510275 Guangzhou P. R. China
| | - Gilles Gasser
- Chimie ParisTech PSL University CNRS Institute of Chemistry for Life and Health Sciences Laboratory for Inorganic Chemical Biology 75005 Paris France
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22
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Basu U, Khan I, Koley D, Saha S, Kondaiah P, Chakravarty AR. Corrigendum to "Nuclear targeting terpyridine iron(II) complexes for cellular imaging and remarkable photocytotoxicity" [J. Inorg. Biochem. 116 (2012) 77-87]. J Inorg Biochem 2019; 196:110692. [PMID: 30992146 DOI: 10.1016/j.jinorgbio.2019.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Uttara Basu
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Sir C. V. Raman Avenue, Bangalore 560012, Karnataka, India
| | - Imran Khan
- Department of Molecular Reproduction, Development and Genetics, Sir C. V. Raman Avenue, Indian Institute of Science, Bangalore 560012, Karnataka, India
| | - Debasis Koley
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Sir C. V. Raman Avenue, Bangalore 560012, Karnataka, India; Department of Chemistry, Indian Institute of Science Education and Research-Kolkata, Mohanpur 741252, West Bengal, India
| | - Sounik Saha
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Sir C. V. Raman Avenue, Bangalore 560012, Karnataka, India
| | - Paturu Kondaiah
- Department of Molecular Reproduction, Development and Genetics, Sir C. V. Raman Avenue, Indian Institute of Science, Bangalore 560012, Karnataka, India
| | - Akhil R Chakravarty
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Sir C. V. Raman Avenue, Bangalore 560012, Karnataka, India.
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Pathak RK, Basu U, Ahmad A, Sarkar S, Kumar A, Surnar B, Ansari S, Wilczek K, Ivan ME, Marples B, Kolishetti N, Dhar S. A designer bow-tie combination therapeutic platform: An approach to resistant cancer treatment by simultaneous delivery of cytotoxic and anti-inflammatory agents and radiation. Biomaterials 2018; 187:117-129. [DOI: 10.1016/j.biomaterials.2018.08.062] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 08/28/2018] [Accepted: 08/29/2018] [Indexed: 12/20/2022]
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24
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Basu U, Otto S, Heinze K, Gasser G. Biological Evaluation of the NIR-Emissive Ruby Analogue [Cr(ddpd)2
][BF4
]3
as a Photodynamic Therapy Photosensitizer. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201801023] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Uttara Basu
- Laboratory for Inorganic Chemical Biology; Chimie ParisTech PSL University; 75005 Paris France
| | - Sven Otto
- Institute of Inorganic Chemistry and Analytical Chemistry; Johannes Gutenberg University of Mainz; Duesberweg 10-14 55128 Mainz Germany
- Graduate School Materials Science in Mainz; Staudingerweg 9 55128 Mainz Germany
| | - Katja Heinze
- Institute of Inorganic Chemistry and Analytical Chemistry; Johannes Gutenberg University of Mainz; Duesberweg 10-14 55128 Mainz Germany
| | - Gilles Gasser
- Laboratory for Inorganic Chemical Biology; Chimie ParisTech PSL University; 75005 Paris France
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Surnar B, Kolishetti N, Basu U, Ahmad A, Goka E, Marples B, Kolb D, Lippman ME, Dhar S. Reduction of Cisplatin-Induced Ototoxicity without Compromising Its Antitumor Activity. Biochemistry 2018; 57:6500-6513. [DOI: 10.1021/acs.biochem.8b00712] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bapurao Surnar
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, Florida 33136, United States
| | - Nagesh Kolishetti
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, Florida 33136, United States
- Partikula LLC, 7777 Davie Road, Hollywood, Florida 33024, United States
- Department of Immunology & Nano-medicine, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida 33199, United States
| | - Uttara Basu
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, Florida 33136, United States
| | - Anis Ahmad
- Department of Radiation Oncology, University of Miami Miller School of Medicine, Miami, Florida 33136, United States
| | - Erik Goka
- Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida 33136, United States
| | - Brian Marples
- Department of Radiation Oncology, University of Miami Miller School of Medicine, Miami, Florida 33136, United States
- Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, Florida 33136, United States
| | - David Kolb
- Partikula LLC, 7777 Davie Road, Hollywood, Florida 33024, United States
| | - Marc E. Lippman
- Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida 33136, United States
- Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, Florida 33136, United States
| | - Shanta Dhar
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, Florida 33136, United States
- Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, Florida 33136, United States
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26
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Sahoo S, Podder S, Garai A, Majumdar S, Mukherjee N, Basu U, Nandi D, Chakravarty AR. Iron(III) Complexes of Vitamin B6
Schiff Base with Boron-Dipyrromethene Pendants for Lysosome-Selective Photocytotoxicity. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201701487] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Somarupa Sahoo
- Department of Inorganic and Physical Chemistry; Indian Institute of Science; 560012 Bangalore Karnataka India
| | - Santosh Podder
- Department of Biochemistry; Indian Institute of Science; 560012 Bangalore Karnataka India
| | - Aditya Garai
- Department of Inorganic and Physical Chemistry; Indian Institute of Science; 560012 Bangalore Karnataka India
| | - Shamik Majumdar
- Department of Biochemistry; Indian Institute of Science; 560012 Bangalore Karnataka India
| | - Nandini Mukherjee
- Department of Inorganic and Physical Chemistry; Indian Institute of Science; 560012 Bangalore Karnataka India
| | - Uttara Basu
- Department of Inorganic and Physical Chemistry; Indian Institute of Science; 560012 Bangalore Karnataka India
| | - Dipankar Nandi
- Department of Biochemistry; Indian Institute of Science; 560012 Bangalore Karnataka India
| | - Akhil R. Chakravarty
- Department of Inorganic and Physical Chemistry; Indian Institute of Science; 560012 Bangalore Karnataka India
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Abstract
Anticancer platinum (Pt) complexes have long been considered to be one of the biggest success stories in the history of medicinal inorganic chemistry. Yet there remains the hunt for the "magic bullet" which can satisfy the requirements of an effective chemotherapeutic drug formulation. Pt(iv) complexes are kinetically more inert than the Pt(ii) congeners and offer the opportunity to append additional functional groups/ligands for prodrug activation, tumor targeting, or drug delivery. The ultimate aim of functionalization is to enhance the tumor selective action and attenuate systemic toxicity of the drugs. Moreover, an increase in cellular accumulation to surmount the resistance of the tumor against the drugs is also of paramount importance in drug development and discovery. In this review, we will address the attempts made in our lab to develop Pt(iv) prodrugs that can be activated and delivered using targeted nanotechnology-based delivery platforms.
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Affiliation(s)
- Uttara Basu
- NanoTherapeutics Research Laboratory, Department of Chemistry, University of Georgia, Athens, GA 30602, USA
| | - Bhabatosh Banik
- NanoTherapeutics Research Laboratory, Department of Chemistry, University of Georgia, Athens, GA 30602, USA
| | - Ru Wen
- NanoTherapeutics Research Laboratory, Department of Chemistry, University of Georgia, Athens, GA 30602, USA
| | - Rakesh K Pathak
- NanoTherapeutics Research Laboratory, Department of Chemistry, University of Georgia, Athens, GA 30602, USA
| | - Shanta Dhar
- NanoTherapeutics Research Laboratory, Department of Chemistry, University of Georgia, Athens, GA 30602, USA
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28
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Ziesman BR, Turkington TK, Basu U, Strelkov SE. A Quantitative PCR System for Measuring Sclerotinia sclerotiorum in Canola (Brassica napus). Plant Dis 2016; 100:984-990. [PMID: 30686145 DOI: 10.1094/pdis-05-15-0605-re] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Sclerotinia stem rot, caused by Sclerotinia sclerotiorum, is an economically important disease of canola (Brassica napus) commonly managed by routine application of fungicides. Petal infestation has been demonstrated to be an important stage of the disease cycle in canola and has been the focus of previously developed Sclerotinia stem rot risk assessment methods. Quantitative polymerase chain reaction (qPCR) analysis can provide a more rapid and accurate assessment of petal infestation levels. Primers and a hydrolysis probe were designed to amplify a 70-bp region of an S. sclerotiorum-specific gene, SS1G_00263. A hydrolysis probe-based qPCR assay was developed that had a detection limit of 8.0 × 10-4 ng of S. sclerotiorum DNA and only amplified S. sclerotiorum DNA. Evaluation of petals collected at five sampling points in each of 10 commercial canola fields on each of two sampling dates (corresponding to 20 to 30% bloom and 40 to 50% bloom) revealed S. sclerotiorum DNA infestation levels of 0 to 3.3 × 10-1 ng/petal. This qPCR assay can be used to reliably quantify petal infestation and, with further research, has the potential to serve as the basis for a Sclerotinia stem rot risk assessment tool or as a means to study Sclerotinia stem rot epidemiology.
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Affiliation(s)
- B R Ziesman
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, T6G 2P5, Canada
| | - T K Turkington
- Lacombe Research Centre, Agriculture and Agri-Food Canada, Lacombe, AB, T4L 1W1, Canada
| | - U Basu
- Department of Agricultural, Food and Nutritional Science, University of Alberta
| | - S E Strelkov
- Department of Agricultural, Food and Nutritional Science, University of Alberta
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29
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Basu U, Pant I, Kondaiah P, Chakravarty AR. Mitochondria-Targeting Iron(III) Catecholates for Photoactivated Anticancer Activity under Red Light. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201501105] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Dong S, Shappee BJ, Prieto JL, Jha SW, Stanek KZ, Holoien TWS, Kochanek CS, Thompson TA, Morrell N, Thompson IB, Basu U, Beacom JF, Bersier D, Brimacombe J, Brown JS, Bufano F, Chen P, Conseil E, Danilet AB, Falco E, Grupe D, Kiyota S, Masi G, Nicholls B, Olivares E. F, Pignata G, Pojmanski G, Simonian GV, Szczygiel DM, Woźniak PR. ASASSN-15lh: A highly super-luminous supernova. Science 2016; 351:257-60. [DOI: 10.1126/science.aac9613] [Citation(s) in RCA: 152] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- Subo Dong
- Kavli Institute for Astronomy and Astrophysics, Peking University, Yi He Yuan Road 5, Hai Dian District, Beijing 100871, China
| | - B. J. Shappee
- Carnegie Observatories, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - J. L. Prieto
- Núcleo de Astronomía de la Facultad de Ingeniería, Universidad Diego Portales, Av. Ejército 441, Santiago, Chile
- Millennium Institute of Astrophysics, Santiago, Chile
| | - S. W. Jha
- Department of Physics and Astronomy, Rutgers, The State University of New Jersey, 136 Frelinghuysen Road, Piscataway, NJ 08854, USA
| | - K. Z. Stanek
- Department of Astronomy, The Ohio State University, 140 W. 18th Avenue, Columbus, OH 43210, USA
- Center for Cosmology and AstroParticle Physics (CCAPP), The Ohio State University, 191 W. Woodruff Avenue, Columbus, OH 43210, USA
| | - T. W.-S. Holoien
- Department of Astronomy, The Ohio State University, 140 W. 18th Avenue, Columbus, OH 43210, USA
- Center for Cosmology and AstroParticle Physics (CCAPP), The Ohio State University, 191 W. Woodruff Avenue, Columbus, OH 43210, USA
| | - C. S. Kochanek
- Department of Astronomy, The Ohio State University, 140 W. 18th Avenue, Columbus, OH 43210, USA
- Center for Cosmology and AstroParticle Physics (CCAPP), The Ohio State University, 191 W. Woodruff Avenue, Columbus, OH 43210, USA
| | - T. A. Thompson
- Department of Astronomy, The Ohio State University, 140 W. 18th Avenue, Columbus, OH 43210, USA
- Center for Cosmology and AstroParticle Physics (CCAPP), The Ohio State University, 191 W. Woodruff Avenue, Columbus, OH 43210, USA
| | - N. Morrell
- Las Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena, Chile
| | - I. B. Thompson
- Carnegie Observatories, 813 Santa Barbara Street, Pasadena, CA 91101, USA
| | - U. Basu
- Department of Astronomy, The Ohio State University, 140 W. 18th Avenue, Columbus, OH 43210, USA
| | - J. F. Beacom
- Department of Astronomy, The Ohio State University, 140 W. 18th Avenue, Columbus, OH 43210, USA
- Center for Cosmology and AstroParticle Physics (CCAPP), The Ohio State University, 191 W. Woodruff Avenue, Columbus, OH 43210, USA
- Department of Physics, The Ohio State University, 191 W. Woodruff Avenue, Columbus, OH 43210, USA
| | - D. Bersier
- Astrophysics Research Institute, Liverpool John Moores University, 146 Brownlow Hill, Liverpool L3 5RF, UK
| | - J. Brimacombe
- Coral Towers Observatory, Cairns, Queensland 4870, Australia
| | - J. S. Brown
- Department of Astronomy, The Ohio State University, 140 W. 18th Avenue, Columbus, OH 43210, USA
| | - F. Bufano
- INAF-Osservatorio Astrofisico di Catania, Via S.Sofia 78, 95123, Catania, Italy
| | - Ping Chen
- Department of Astronomy, Peking University, Yi He Yuan Road 5, Hai Dian District, 100871, P. R. China
| | - E. Conseil
- Association Francaise des Observateurs d’Etoiles Variables (AFOEV), Observatoire de Strasbourg 11, rue de l’Université, F-67000 Strasbourg, France
| | - A. B. Danilet
- Department of Astronomy, The Ohio State University, 140 W. 18th Avenue, Columbus, OH 43210, USA
| | - E. Falco
- Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA
| | - D. Grupe
- Department of Earth and Space Science, Morehead State University, 235 Martindale Drive, Morehead, KY 40351, USA
| | - S. Kiyota
- Variable Star Observers League in Japan (VSOLJ), 7-1 Kitahatsutomi, Kamagaya, Chiba 273-0126, Japan
| | - G. Masi
- The Virtual Telescope Project, Via Madonna de Loco 47, 03023 Ceccano, Italy
| | - B. Nicholls
- Mt Vernon Observatory, 6 Mt Vernon pl, Nelson, New Zealand
| | - F. Olivares E.
- Millennium Institute of Astrophysics, Santiago, Chile
- Departamento Ciencias Fisicas, Universidad Andres Bello, Av. Republica 252, Santiago, Chile
| | - G. Pignata
- Millennium Institute of Astrophysics, Santiago, Chile
- Departamento Ciencias Fisicas, Universidad Andres Bello, Av. Republica 252, Santiago, Chile
| | - G. Pojmanski
- Warsaw University Astronomical Observatory, Al. Ujazdowskie 4, 00-478 Warsaw, Poland
| | - G. V. Simonian
- Department of Astronomy, The Ohio State University, 140 W. 18th Avenue, Columbus, OH 43210, USA
| | - D. M. Szczygiel
- Warsaw University Astronomical Observatory, Al. Ujazdowskie 4, 00-478 Warsaw, Poland
| | - P. R. Woźniak
- Los Alamos National Laboratory, Mail Stop B244, Los Alamos, NM 87545, USA
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Raza MK, Mitra K, Shettar A, Basu U, Kondaiah P, Chakravarty AR. Photoactive platinum(ii) β-diketonates as dual action anticancer agents. Dalton Trans 2016; 45:13234-43. [DOI: 10.1039/c6dt02590k] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Cyclometallated platinum(ii) β-diketonates show significant photocytotoxicity in skin-keratinocyte HaCaT cells [IC50: ∼10 μM (visible light, 400–700 nm), ≥60 μM (dark)].
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Affiliation(s)
- Md Kausar Raza
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore 560012
- India
| | - Koushambi Mitra
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore 560012
- India
| | - Abhijith Shettar
- Department of Molecular Reproduction
- Development and Genetics
- Indian Institute of Science
- Bangalore 560012
- India
| | - Uttara Basu
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore 560012
- India
| | - Paturu Kondaiah
- Department of Molecular Reproduction
- Development and Genetics
- Indian Institute of Science
- Bangalore 560012
- India
| | - Akhil R. Chakravarty
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore 560012
- India
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Hausman GJ, Basu U, Wei S, Hausman DB, Dodson MV. Preadipocyte and adipose tissue differentiation in meat animals: influence of species and anatomical location. Annu Rev Anim Biosci 2015; 2:323-51. [PMID: 25384146 DOI: 10.1146/annurev-animal-022513-114211] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Early in porcine adipose tissue development, the stromal-vascular (SV) elements control and dictate the extent of adipogenesis in a depot-dependent manner. The vasculature and collagen matrix differentiate before overt adipocyte differentiation. In the fetal pig, subcutaneous (SQ) layer development is predictive of adipocyte development, as the outer, middle, and inner layers of dorsal SQ adipose tissue develop and maintain layered morphology throughout postnatal growth of SQ adipose tissue. Bovine and ovine fetuses contain brown adipose tissue but SQ white adipose tissue is poorly developed structurally. Fetal adipose tissue differentiation is associated with the precocious expression of several genes encoding secreted factors and key transcription factors like peroxisome proliferator activated receptor (PPAR)γ and CCAAT/-enhancer-binding protein. Identification of adipocyte-associated genes differentially expressed by age, depot, and species in vivo and in vitro has been achieved using single-gene analysis, microarrays, suppressive subtraction hybridization, and next-generation sequencing applications. Gene polymorphisms in PPARγ, cathepsins, and uncoupling protein 3 have been associated with back fat accumulation. Genome scans have mapped several quantitative trait loci (QTL) predictive of adipose tissue-deposition phenotypes in cattle and pigs.
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Basu U, Goodbrand J, McMurdo MET, Donnan PT, McGilchrist M, Frost H, George J, Witham MD. 40 * ASSOCIATION BETWEEN ALLOPURINOL USE AND HIP FRACTURE IN OLDER PATIENTS DISCHARGED FROM REHABILITATION. Age Ageing 2015. [DOI: 10.1093/ageing/afv030.01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Basu U, Pant I, Hussain A, Kondaiah P, Chakravarty AR. Iron(III) Complexes of a Pyridoxal Schiff Base for Enhanced Cellular Uptake with Selectivity and Remarkable Photocytotoxicity. Inorg Chem 2015; 54:3748-58. [DOI: 10.1021/ic5027625] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Uttara Basu
- Department of Inorganic and Physical Chemistry and ‡Department of Molecular Reproduction,
Development and Genetics, Indian Institute of Science, Bangalore 560012, Karnataka, India
| | - Ila Pant
- Department of Inorganic and Physical Chemistry and ‡Department of Molecular Reproduction,
Development and Genetics, Indian Institute of Science, Bangalore 560012, Karnataka, India
| | - Akhtar Hussain
- Department of Inorganic and Physical Chemistry and ‡Department of Molecular Reproduction,
Development and Genetics, Indian Institute of Science, Bangalore 560012, Karnataka, India
| | - Paturu Kondaiah
- Department of Inorganic and Physical Chemistry and ‡Department of Molecular Reproduction,
Development and Genetics, Indian Institute of Science, Bangalore 560012, Karnataka, India
| | - Akhil R. Chakravarty
- Department of Inorganic and Physical Chemistry and ‡Department of Molecular Reproduction,
Development and Genetics, Indian Institute of Science, Bangalore 560012, Karnataka, India
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Basu U, Pant I, Khan I, Hussain A, Kondaiah P, Chakravarty AR. Iron(III) Catecholates for Cellular Imaging and Photocytotoxicity in Red Light. Chem Asian J 2014; 9:2494-504. [DOI: 10.1002/asia.201402207] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Revised: 04/28/2014] [Indexed: 12/25/2022]
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Basu U, Khan I, Hussain A, Gole B, Kondaiah P, Chakravarty AR. Carbohydrate-Appended Tumor Targeting Iron(III) Complexes Showing Photocytotoxicity in Red Light. Inorg Chem 2014; 53:2152-62. [DOI: 10.1021/ic4028173] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Uttara Basu
- Department of Inorganic
and Physical Chemistry, Indian Institute of Science, Bangalore 560012, Karnataka, India
| | - Imran Khan
- Department of Molecular Reproduction, Development and
Genetics, Indian Institute of Science, Bangalore 560012, Karnataka, India
| | - Akhtar Hussain
- Department of Inorganic
and Physical Chemistry, Indian Institute of Science, Bangalore 560012, Karnataka, India
| | - Bappaditya Gole
- Department of Inorganic
and Physical Chemistry, Indian Institute of Science, Bangalore 560012, Karnataka, India
| | - Paturu Kondaiah
- Department of Molecular Reproduction, Development and
Genetics, Indian Institute of Science, Bangalore 560012, Karnataka, India
| | - Akhil R. Chakravarty
- Department of Inorganic
and Physical Chemistry, Indian Institute of Science, Bangalore 560012, Karnataka, India
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Mitra K, Basu U, Khan I, Maity B, Kondaiah P, Chakravarty AR. Remarkable anticancer activity of ferrocenyl-terpyridine platinum(ii) complexes in visible light with low dark toxicity. Dalton Trans 2014; 43:751-63. [DOI: 10.1039/c3dt51922h] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Basu U, Khan I, Koley D, Saha S, Kondaiah P, Chakravarty AR. Nuclear targeting terpyridine iron(II) complexes for cellular imaging and remarkable photocytotoxicity. J Inorg Biochem 2012; 116:77-87. [DOI: 10.1016/j.jinorgbio.2012.06.006] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2012] [Revised: 06/02/2012] [Accepted: 06/04/2012] [Indexed: 01/13/2023]
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Basu U, Khan I, Hussain A, Kondaiah P, Chakravarty AR. Photodynamic Effect in Near-IR Light by a Photocytotoxic Iron(III) Cellular Imaging Agent. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201108360] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Basu U, Khan I, Hussain A, Kondaiah P, Chakravarty AR. Photodynamic Effect in Near-IR Light by a Photocytotoxic Iron(III) Cellular Imaging Agent. Angew Chem Int Ed Engl 2012; 51:2658-61. [DOI: 10.1002/anie.201108360] [Citation(s) in RCA: 105] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2011] [Revised: 01/16/2012] [Indexed: 01/19/2023]
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Jin W, Olson EN, Moore SS, Basarab JA, Basu U, Guan LL. Transcriptome analysis of subcutaneous adipose tissues in beef cattle using 3′ digital gene expression-tag profiling1. J Anim Sci 2012; 90:171-83. [DOI: 10.2527/jas.2011-4229] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- W. Jin
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta T6G 2P5, Canada
| | | | - S. S. Moore
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta T6G 2P5, Canada
| | - J. A. Basarab
- Alberta Agriculture and Rural Development, Lacombe Research Centre, Lacombe, Alberta T4L1W1, Canada
| | - U. Basu
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta T6G 2P5, Canada
| | - L. L. Guan
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta T6G 2P5, Canada
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Almeida LM, Basu U, Williams JL, Moore SS, Guan LL. Microarray analysis in caudal medulla of cattle orally challenged with bovine spongiform encephalopathy. Genet Mol Res 2011; 10:3948-62. [PMID: 22033911 DOI: 10.4238/2011.october.25.5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Bovine spongiform encephalopathy (BSE) is a fatal disorder in cattle characterized by progressive neurodegeneration of the central nervous system. We investigated the molecular mechanisms involved in neurodegeneration during prion infection through the identification of genes that are differentially expressed (DE) between experimentally infected and non-challenged cattle. Gene expression of caudal medulla from control and orally infected animals was compared by microarray analysis using 24,000 bovine oligonucleotides representing 16,846 different genes to identify DE genes associated with BSE disease. In total, 182 DE genes were identified between normal and BSE-infected tissues (>2.0-fold change, P < 0.01); 81 DE genes had gene ontology functions, which included synapse function, calcium ion regulation, immune and inflammatory response, apoptosis, and cytoskeleton organization; 13 of these genes were found to be involved in 26 different Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways. The expression of five DE genes associated with synapse function (tachykinin, synuclein, neuropeptide Y, cocaine, amphetamine-responsive transcript, and synaptosomal-associated protein 25 kDa) and three DE genes associated with calcium ion regulation (parvalbumin, visinin-like, and cadherin) was further validated in the medulla tissue of cattle at different infection times (6, 12, 42, and 45 months post-infection) by qRT-PCR. These data will contribute to a better understanding of the molecular mechanisms of neuropathology in bovine species.
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Affiliation(s)
- L M Almeida
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Canada.
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Basu U, Southron JL, Stephens JL, Taylor GJ. Reverse genetic analysis of the glutathione metabolic pathway suggests a novel role of PHGPX and URE2 genes in aluminum resistance in Saccharomyces cerevisiae. Mol Genet Genomics 2004; 271:627-37. [PMID: 15133656 DOI: 10.1007/s00438-004-1015-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2003] [Accepted: 04/14/2004] [Indexed: 10/26/2022]
Abstract
We have taken a systematic genetic approach to study the potential role of glutathione metabolism in aluminum (Al) toxicity and resistance, using disruption mutants available in Saccharomyces cerevisiae. Yeast disruption mutants defective in phospholipid hydroperoxide glutathione peroxidases (PHGPX; phgpx1 Delta, phgpx2 Delta, and phgpx3Delta), were tested for their sensitivity to Al. The triple mutant, phgpx1 Delta/2Delta/3Delta, was more sensitive to Al (55% reduction in growth at 300 microM Al) than any single phgpx mutant, indicating that the PHGPX genes may collectively contribute to Al resistance. The hypersensitivity of phgpx3Delta to Al was overcome by complementation with PHGPX3, and all PHGPX genes showed increased expression in response to Al in the wild-type strain (YPH250), with maximum induction of approximately 2.5-fold for PHGPX3. Both phgpx3Delta and phgpx1Delta/2Delta/3Delta mutants were sensitive to oxidative stress (exposure to H(2)O(2) or diamide). Lipid peroxidation was also increased in the phgpx1Delta/2Delta/3Delta mutant compared to the parental strain. Disruption mutants defective in genes for glutathione S-transferases (GSTs) (gtt1Delta and gtt2Delta), glutathione biosynthesis (gsh1Delta and gsh2Delta), glutathione reductase (glr1Delta) and a glutathione transporter (opt1Delta) did not show hypersensitivity to Al relative to the parental strain BY4741. Interestingly, a strain deleted for URE2, a gene which encodes a prion precursor with homology to GSTs, also showed hypersensitivity to Al. The hypersensitivity of the ure2Delta mutant could be overcome by complementation with URE2. Expression of URE2 in the parental strain increased approximately 2-fold in response to exposure to 100 microM Al. Intracellular oxidation levels in the ure2Delta mutant showed a 2-fold (non-stressed) and 3-fold (when exposed-to 2 mM H(2)O(2)) increase compared to BY4741; however, the ure2Delta mutant showed no change in lipid peroxidation compared to the control. The phgpx1Delta/2Delta/3Delta and ure2Delta mutants both showed increased accumulation of Al. These findings suggest the involvement of PHGPX genes and a novel role of URE2 in Al toxicity/resistance in S. cerevisiae.
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Affiliation(s)
- U Basu
- Department of Biological Sciences, University of Alberta, T6G 2E9, Edmonton, Alberta, Canada.
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Basu U, Si K, Warner JR, Maitra U. The Saccharomyces cerevisiae TIF6 gene encoding translation initiation factor 6 is required for 60S ribosomal subunit biogenesis. Mol Cell Biol 2001; 21:1453-62. [PMID: 11238882 PMCID: PMC86691 DOI: 10.1128/mcb.21.5.1453-1462.2001] [Citation(s) in RCA: 137] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Eukaryotic translation initiation factor 6 (eIF6), a monomeric protein of about 26 kDa, can bind to the 60S ribosomal subunit and prevent its association with the 40S ribosomal subunit. In Saccharomyces cerevisiae, eIF6 is encoded by a single-copy essential gene. To understand the function of eIF6 in yeast cells, we constructed a conditional mutant haploid yeast strain in which a functional but a rapidly degradable form of eIF6 fusion protein was synthesized from a repressible GAL10 promoter. Depletion of eIF6 from yeast cells resulted in a selective reduction in the level of 60S ribosomal subunits, causing a stoichiometric imbalance in 60S-to-40S subunit ratio and inhibition of the rate of in vivo protein synthesis. Further analysis indicated that eIF6 is not required for the stability of 60S ribosomal subunits. Rather, eIF6-depleted cells showed defective pre-rRNA processing, resulting in accumulation of 35S pre-rRNA precursor, formation of a 23S aberrant pre-rRNA, decreased 20S pre-rRNA levels, and accumulation of 27SB pre-rRNA. The defect in the processing of 27S pre-rRNA resulted in the reduced formation of mature 25S and 5.8S rRNAs relative to 18S rRNA, which may account for the selective deficit of 60S ribosomal subunits in these cells. Cell fractionation as well as indirect immunofluorescence studies showed that c-Myc or hemagglutinin epitope-tagged eIF6 was distributed throughout the cytoplasm and the nuclei of yeast cells.
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Affiliation(s)
- U Basu
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, New York 10461, USA
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Taylor GJ, Basu A, Basu U, Slaski JJ, Zhang G, Good A. Al-Induced, 51-Kilodalton, Membrane-Bound Proteins Are Associated with Resistance to Al in a Segregating Population of Wheat. Plant Physiol 1997; 114:363-372. [PMID: 12223709 PMCID: PMC158312 DOI: 10.1104/pp.114.1.363] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Incorporation of 35S into protein is reduced by exposure to Al in wheat (Triticum aestivum), but the effects are genotype-specific. Exposure to 10 to 75 [mu]M Al had little effect on 35S incorporation into total protein, nuclear and mitochondrial protein, microsomal protein, and cytosolic protein in the Al-resistant cultivar PT741. In contrast, 10 [mu]M Al reduced incorporation by 21 to 38% in the Al-sensitive cultivar Katepwa, with effects becoming more pronounced (31-62%) as concentrations of Al increased. We previously reported that a pair of 51-kD membrane-bound proteins accumulated in root tips of PT741 under conditions of Al stress. We now report that the 51-kD band is labeled with 35S after 24 h of exposure to 75 [mu]M Al. The specific induction of the 51-kD band in PT741 suggested a potential role of one or both of these proteins in mediating resistance to Al. Therefore, we analyzed their expression in single plants from an F2 population arising from a cross between the PT741 and Katepwa cultivars. Accumulation of 1,3-[beta]-glucans (callose) in root tips after 24 h of exposure to 100 [mu]M Al indicated that this population segregated for Al resistance in about a 3:1 ratio. A close correlation between resistance to Al (low callose content of root tips) and accumulation of the 51-kD band was observed, indicating that at least one of these proteins cosegregates with the Al-resistance phenotype. As a first step in identifying a possible function, we have demonstrated that the 51-kD band is most clearly associated with the tonoplast. Whereas Al has been reported to stimulate the activity of the tonoplast H+-ATPase and H+-PPase, antibodies raised against these proteins did not cross-react with the 51-kD band. Efforts are now under way to purify this protein from tonoplast-enriched fractions.
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Affiliation(s)
- G. J. Taylor
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada T6G 2E9
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Basu U, Basu A, Taylor GJ. Differential Exudation of Polypeptides by Roots of Aluminum-Resistant and Aluminum-Sensitive Cultivars of Triticum aestivum L. in Response to Aluminum Stress. Plant Physiol 1994; 106:151-158. [PMID: 12232313 PMCID: PMC159510 DOI: 10.1104/pp.106.1.151] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Cultivars of Triticum aestivum differing in resistance to Al were grown under aseptic conditions in the presence and absence of Al and polypeptides present in root exudates were collected, concentrated, and analyzed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. Upon exposure to 100 and 200 [mu]M Al, root elongation in Al-sensitive cultivars was reduced by 30 and 65%, respectively, whereas root elongation in resistant cultivars was reduced by only 15 and 30%. Accumulation of polypeptides in the growth medium increased with time for 96 to 120 h, with little additional accumulation thereafter. This pattern of exudation was virtually unaffected by exposure to 100 [mu]M Al in the Al-resistant cultivars Atlas 66 and Maringa, whereas total accumulation was reduced in sensitive cultivars. Changes in exudation were consistent with alterations in root elongation. Al-induced or Al-enhanced polypeptide bands were detected in Atlas 66 and Maringa after 72 h of exposure to Al. Increased accumulation of 12-, 22-, and 33-kD bands was observed at 75 [mu]M Al in Atlas 66 and 12-, 23-, and 43.5-kD bands started to appear at 50 [mu]M Al in Maringa. In the Al-sensitive cultivars Roblin and Katepwa, no significant effect on polypeptide profiles was observed at values up to 100 [mu]M Al. When root exudates were separated by ultrafiltration and the Al content was measured in both high molecular mass (HMM; >10 kD) and ultrafiltrate (<10 kD) fractions, approximately 2 times more Al was detected in HMM fractions from Al-resistant cultivars than from Al-sensitive cultivars. Dialysis of HMM fractions against water did not release this bound Al;digestion with protease released between 62 and 73% of total Al, with twice as much released from exudates of Al-resistant than of Al-sensitive cultivars. When plants were grown in the presence of 0 to 200 [mu]M Al, saturation of the Al-binding capacity of HMM exudates occurred at 50 [mu]M Al in Al-sensitive cultivars. Saturation was not achieved in resistant cultivars. Differences in exudation of total polypeptides in response to Al stress, enhanced accumulation of specific polypeptides, and the greater association of Al with HMM fractions from Al-resistant cultivars suggest that root exudate polypeptides may play a role in plant response to Al.
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Affiliation(s)
- U. Basu
- Department of Biological Sciences, University of Alberta, Edmonton, Alberta T6G 2E9, Canada
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Bennett GS, Basu U, Hollander BA, Quintana R, Rodriguez R. Differential sensitivity to inhibitors discriminates between two types of kinases responsible for in vivo phosphorylation of different sites in the carboxy-terminal tail of chicken neurofilament-M. Mol Cell Neurosci 1994; 5:358-68. [PMID: 7804606 DOI: 10.1006/mcne.1994.1043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
In order to characterize the phosphorylation of neurofilaments (NF) in intact neurons, we examined the ability of several protein kinase inhibitors to interfere with the incorporation 32P into individual NF polypeptides of sensory neurons in culture. We also examined their effect on the post-translational mobility shift on SDS-PAGE that accompanies phosphorylation of newly synthesized NF-M. Several agents known to inhibit cyclic nucleotide-, Ca2+/calmodulin-, and Ca2+/phospholipid-dependent protein kinases (H7, HA1004, trifluoperizine, sphingosine) had no effect on the phosphorylation of any NF polypeptide, in either assay. In contrast, two broadly active protein kinase inhibitors, staurosporine and K252a, inhibited the incorporation of 32P into NF-M by 60-70% and also blocked the post-translational mobility shift. They had no effect on NF-L. The action of staurosporine and K252a was identical to that of 25 mM LiCl. Proteolytic cleavage and phosphopeptide mapping of 32P-labeled NF-M from control and treated cultures revealed that the phosphorylation of only one subset of phosphopeptides was affected by staurosporine, K252a, and LiCl. These were contained within a single chymotryptic fragment of the NF-M tail segment, probably containing most of the 17 repeats of a KXXS/TP motif. The phosphorylation of another subset of phosphopeptides was insensitive to these inhibitors. They were contained within a different chymotryptic fragment of the tail segment which contains a KSD and four KSP potential phosphorylation sites. This differential sensitivity to protein kinase inhibitors distinguishes two different types of effector-independent kinases that phosphorylate, in vivo, different sites within the NF-M tail.
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Affiliation(s)
- G S Bennett
- Department of Anatomy, College of Medicine, University of Florida, Gainesville 32610
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Basu A, Basu U, Taylor GJ. Induction of Microsomal Membrane Proteins in Roots of an Aluminum-Resistant Cultivar of Triticum aestivum L. under Conditions of Aluminum Stress. Plant Physiol 1994; 104:1007-1013. [PMID: 12232144 PMCID: PMC160699 DOI: 10.1104/pp.104.3.1007] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Three-day-old seedlings of an Al-sensitive (Neepawa) and an Al-resistant (PT741) cultivar of Triticum aestivum were subjected to Al concentrations ranging from 0 to 100 [mu]M for 72 h. At 25 [mu]M Al, growth of roots was inhibited by 57% in the Al-sensitive cultivar, whereas root growth in the Al-resistant cultivar was unaffected. A concentration of 100 [mu]M Al was required to inhibit root growth of the Al-resistant cultivar by 50% and resulted in almost total inhibition of root growth in the sensitive cultivar. Cytoplasmic and microsomal membrane fractions were isolated from root tips (first 5 mm) and the adjacent 2-cm region of roots of both cultivars. When root cytoplasmic proteins were analyzed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis, no changes in polypeptide patterns were observed in response to Al stress. Analysis of microsomal membrane proteins revealed a band with an apparent molecular mass of 51 kD, which showed significant accumulation in the resistant cultivar following Al exposure. Two-dimensional gel analysis revealed that this band comprises two polypeptides, each of which is induced by exposure to Al. The response of the 51-kD band to a variety of experimental conditions was characterized to determine whether its pattern of accumulation was consistent with a possible role in Al resistance. Accumulation was significantly greater in root tips when compared to the rest of the root. When seedlings were subjected to Al concentrations ranging from 0 to 150 [mu]M, the proteins were evident at 25 [mu]M and were fully accumulated at 100 [mu]M. Time-course studies from 0 to 96 h indicated that full accumulation of the 51-kD band occurred within 24 h of initiation of Al stress. With subsequent removal of stress, the polypeptides gradually disappeared and were no longer visible after 72 h. When protein synthesis was inhibited by cycloheximide, the 51-kD band disappeared even when seedlings were maintained in Al-containing media. Other metals, including Cu, Zn, and Mn, failed to induce this band, and Cd and Ni resulted in its partial accumulation. These results indicate that synthesis of the 51-kD microsomal membrane proteins is specifically induced and maintained during Al stress in the Al-resistant cultivar, PT741.
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Affiliation(s)
- A. Basu
- Department of Botany, University of Alberta, Edmonton, Alberta T6G 2E9, Canada
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