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Rapp M, Mrowiec P, Koroniak H. Application of DAST mediated reactions in transformations of α-hydroxyphosphonates derived from O-isopropylidene-protected carbohydrate derivatives. PHOSPHORUS SULFUR 2017. [DOI: 10.1080/10426507.2017.1295967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Magdalena Rapp
- Faculty of Chemistry, Adam Mickiewicz University, Poznań, Poland
| | - Patrycja Mrowiec
- Faculty of Chemistry, Adam Mickiewicz University, Poznań, Poland
| | - Henryk Koroniak
- Faculty of Chemistry, Adam Mickiewicz University, Poznań, Poland
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Mondal S, Prathap A, Sureshan KM. Vinylogy in Orthoester Hydrolysis: Total Syntheses of Cyclophellitol, Valienamine, Gabosine K, Valienone, Gabosine G, 1-epi-Streptol, Streptol, and Uvamalol A. J Org Chem 2013; 78:7690-700. [DOI: 10.1021/jo401272j] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Soumik Mondal
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Thiruvananthapuram, Kerala 695016, India
| | - Annamalai Prathap
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Thiruvananthapuram, Kerala 695016, India
| | - Kana M. Sureshan
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Thiruvananthapuram, Kerala 695016, India
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Best MD, Zhang H, Prestwich GD. Inositol polyphosphates, diphosphoinositol polyphosphates and phosphatidylinositol polyphosphate lipids: Structure, synthesis, and development of probes for studying biological activity. Nat Prod Rep 2010; 27:1403-30. [DOI: 10.1039/b923844c] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Romanenko VD, Kukhar VP. Fluorinated phosphonates: synthesis and biomedical application. Chem Rev 2007; 106:3868-935. [PMID: 16967924 DOI: 10.1021/cr051000q] [Citation(s) in RCA: 289] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Vadim D Romanenko
- Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Sciences of the Ukraine, 1 Murmanska Street, Kyiv-94 02660, Ukraine
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Xu W, Gao Z, Wu J, Wolf BA. Interferon-gamma-induced regulation of the pancreatic derived cytokine FAM3B in islets and insulin-secreting betaTC3 cells. Mol Cell Endocrinol 2005; 240:74-81. [PMID: 16006032 DOI: 10.1016/j.mce.2005.05.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2005] [Revised: 05/19/2005] [Accepted: 05/20/2005] [Indexed: 10/25/2022]
Abstract
The pancreatic-derived factor (PANDER, FAM3B) is a novel protein that is beta-cell specific and induces beta-cell death. PANDER is localized to insulin-containing granules-based on confocal microscopy and immunogold electron microscopy. PANDER protein was detected in the conditioned medium of betaTC3 cells. Using real-time reverse transcription-polymerase chain reaction, treatment of betaTC3 cells with IL-1beta + TNFalpha + IFNgamma induced a significant seven-fold increase in PANDER mRNA expression (n = 3; p < 0.01 at 24 h, p < 0.05 at 48 h), while IFNgamma alone caused a 3.2-fold increase (n = 3; p < 0.01 at 24 h) compared to unstimulated and time-matched vehicle controls. IL-1beta or TNFalpha alone had no effect. Under those conditions, a similar up-regulation was also observed in mouse islet cells, with increases in PANDER mRNA of 5.9-fold and 5.0-fold after treatment with IL-1beta + TNFalpha + IFNgamma or IFNgamma alone. Because PANDER mRNA expression is up-regulated by IFNgamma, a cytokine implicated in the pathogenesis of type 1 diabetes, PANDER may contribute to the pathogenesis of beta-cell death.
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Affiliation(s)
- Weizhen Xu
- Department of Pathology and Laboratory Medicine, The Children's Hospital of Philadelphia, University of Pennsylvania School of Medicine, 19104, USA
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(α-Monofluoroalkyl)phosphonates: a class of isoacidic and “tunable” mimics of biological phosphates. J Fluor Chem 2001. [DOI: 10.1016/s0022-1139(01)00478-x] [Citation(s) in RCA: 112] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Frontier AJ, Raghavan S, Danishefsky SJ. A Highly Stereoselective Total Synthesis of Hispidospermidin: Derivation of a Pharmacophore Model. J Am Chem Soc 2000. [DOI: 10.1021/ja9944960] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alison J. Frontier
- Contribution from the Department of Chemistry, Columbia University, Havemeyer Hall, New York, New York 10027, and the Laboratory for Bioorganic Chemistry, the Sloan-Kettering Institute for Cancer Research, 1275 York Avenue, New York, New York 10021
| | - Subharekha Raghavan
- Contribution from the Department of Chemistry, Columbia University, Havemeyer Hall, New York, New York 10027, and the Laboratory for Bioorganic Chemistry, the Sloan-Kettering Institute for Cancer Research, 1275 York Avenue, New York, New York 10021
| | - Samuel J. Danishefsky
- Contribution from the Department of Chemistry, Columbia University, Havemeyer Hall, New York, New York 10027, and the Laboratory for Bioorganic Chemistry, the Sloan-Kettering Institute for Cancer Research, 1275 York Avenue, New York, New York 10021
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Blades K, Lequeux TP, Percy JM. A reproducible and high-yielding cerium-mediated route to α,α-difluoro-β-ketophosphonates. Tetrahedron 1997. [DOI: 10.1016/s0040-4020(97)00673-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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10
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Vizitiu D, Kriste AG, Campbell AS, Thatcher GR. Inhibition of phosphatidylinositol-specific phospholipase C: studies on synthetic substrates, inhibitors and a synthetic enzyme. J Mol Recognit 1996; 9:197-209. [PMID: 8877813 DOI: 10.1002/(sici)1099-1352(199603)9:2<197::aid-jmr263>3.0.co;2-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Enzyme inhibition studies on phosphatidylinositol-specific phospholipase C (PI-PLC) from B. Cereus were performed in order to gain an understanding of the mechanism of the PI-PLC family of enzymes and to aid inhibitor design. Inhibition studies on two synthetic cyclic phosphonate analogues (1,2) of inositol cyclic-1:2-monophosphate (cIP), glycerol-2-phosphate and vanadate were performed using natural phosphatidylinositol (PI) substrate in Triton X100 co-micelles and an NMR assay. Further inhibition studies on PI-PLC from B. Cereus were performed using a chromogenic, synthetic PI analogue (DPG-PI), an HPLC assay and Aerosol-OT (AOT), phytic acid and vanadate as inhibitors. For purposes of comparison, a model PI-PLC enzyme system was developed employing a synthetic Cu(II)-metallomicelle and a further synthetic PI analogue (IPP-PI). The studies employing natural PI substrate in Triton X100 co-micelles and synthetic DPG-PI in the absence of surfactant indicate three classes of PI-PLC inhibitors: (1) active-site directed inhibitors (e.g. 1,2); (2) water-soluble polyanions (e.g. tetravanadate, phytic acid); (3) surfactant anions (e.g. AOT). Three modes of molecular recognition are indicated to be important: (1) active site molecular recognition; (2) recognition at an anion-recognition site which may be the active site, and; (3) interfacial (or hydrophobic) recognition which may be exploited to increase affinity for the anion-recognition site in anionic surfactants such as AOT. The most potent inhibition of PI-PLC was observed by tetravanadate and AOT. The metallomicelle model system was observed to mimic PI-PLC in reproducing transesterification of the PI analogue substrate to yield cIP as product and in showing inhibition by phytic acid and AOT.
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Affiliation(s)
- D Vizitiu
- Department of Chemistry, Queen's University, Kingston, Ontario, Canada
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Roberts MF, Wu Y, Zhou C, Geng D, Tan C. Mechanism and structure based inhibitors of phospholipase C enzymes. ADVANCES IN ENZYME REGULATION 1996; 36:57-71. [PMID: 8869740 DOI: 10.1016/0065-2571(95)00017-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
PI-specific PLC enzymes are a key component of phosphatidylinositol-mediated signaling pathways since the hydrophobic product, diacylglycerol, activates protein kinase C and the water-soluble product, inositol trisphosphate, is involved in Ca2+ mobilization. Nonspecific, or PC-PLC, enzymes can generate diacylglycerol without Ca2+ mobilization. A series of inhibitors, both lipophilic and water-soluble, have been synthesized to target each of these two classes of PLC enzymes. Design of the inhibitors was based on proposed enzyme mechanisms and available crystal structures. The solution conformations of the lipophilic phospholipid analogs, (diheptanoylphosphatidyl(2-O-methyl)inositol for PI-PLC and a dihexanoyl-sn-(3-N-benzylaminoglycero)phosphoramidocholine for PC-PLC, have been determined using NMR methodology and the interaction of these compounds with bacterial enzymes has been examined. Water-soluble inhibitors include strained cyclic phosphonates for PI-PLC and vanadate for PC-PLC. An eventual goal of this work is to generate compounds that specifically target each type of intracellular PLC activity.
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Affiliation(s)
- M F Roberts
- Merkert Chemistry Center, Boston College, Chestnut Hill, MA 02167, USA
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Vinod TK, Hayes Griffith O, Keana JF. Synthesis of isosteric and isopolar phosphonate substrate analogues designed as inhibitors for phosphatidylinositol-specific phospholipase C from bacillus cereus. Tetrahedron Lett 1994. [DOI: 10.1016/0040-4039(94)85358-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Affiliation(s)
- K S Bruzik
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago 60612
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Lewis KA, Garigapati VR, Zhou C, Roberts MF. Substrate requirements of bacterial phosphatidylinositol-specific phospholipase C. Biochemistry 1993; 32:8836-41. [PMID: 8395883 DOI: 10.1021/bi00085a014] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A series of symmetric short-chain phosphatidylinositols (PI), including dihexanoyl-PI, diheptanoyl-PI (racemic as well as D and L forms), and 2-methoxy inositol-substituted diheptanoyl-PI, have been synthesized, characterized, and used to investigate key mechanistic questions about phosphatidylinositol-specific phospholipase C (PI-PLC) from Bacillus thuringiensis. Key results include the following: (i) bacterial PI-PLC exhibits a 5-6-fold "interfacial activation" when its substrate is present in an interface as opposed to existing as a monomer in solution (in fact, the similarity to the activation observed with nonspecific PLC enzymes suggests a similarity in activation mechanisms); (ii) the 2-OH must be free since the enzyme cannot hydrolyze diheptanoyl-2-O-methyl-PI (this is most consistent with the formation of inositol cyclic 1,2-phosphate as a necessary step in catalysis); (iii) the inositol ring must have the D stereochemistry (the L-inositol attached to the lipid moiety is neither a substrate nor an inhibitor); and (iv) the presence of noninhibitory L-PI with the D-PI substrate relieves the diacylglycerol product inhibition detected at approximately 30% hydrolysis.
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Affiliation(s)
- K A Lewis
- Department of Chemistry, Boston College, Chestnut Hill, Massachusetts 02167
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Garigapati VR, Roberts MF. Synthesis of phosphatidyl-2-O-alkylinositols as potential inhibitors for PI specific PLC. Tetrahedron Lett 1993. [DOI: 10.1016/s0040-4039(00)73886-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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