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(12) United States Patent (10) Patent No.: US 8,323,640 B2 Sakuraba Et Al
USOO8323640B2 (12) United States Patent (10) Patent No.: US 8,323,640 B2 Sakuraba et al. (45) Date of Patent: *Dec. 4, 2012 (54) HIGHLY FUNCTIONAL ENZYME HAVING OTHER PUBLICATIONS O-GALACTOSIDASE ACTIVITY Broun et al., Catalytic plasticity of fatty acid modification enzymes (75) Inventors: Hitoshi Sakuraba, Abiko (JP); Youichi underlying chemical diversity of plant lipids. Science, 1998, vol. 282: Tajima, Tokyo (JP); Mai Ito, Tokyo 1315-1317. (JP); Seiichi Aikawa, Tokyo (JP); Cameron ER. Recent advances in transgenic technology. 1997, vol. T: 253-265. Fumiko Aikawa, Tokyo (JP) Chica et al., Semi-rational approaches to engineering enzyme activ (73) Assignees: Tokyo Metropolitan Organization For ity: combining the benefits of directed evolution and rational design. Curr, opi. Biotechnol., 2005, vol. 16:378-384. Medical Research, Tokyo (JP); Altif Couzin et al. As Gelsinger case ends, Gene therapy Suffers another Laboratories, Tokyo (JP) blow. Science, 2005, vol. 307: 1028. Devos et al., Practical Limits of Function prediction. Proteins: Struc (*) Notice: Subject to any disclaimer, the term of this ture, Function, and Genetics. 2000, vol. 41: 98-107. patent is extended or adjusted under 35 Donsante et al., AAV vector integration sites in mouse hapatocellular U.S.C. 154(b) by 0 days. carcinoma. Science, 2007. vol. 317: 477. Juengst ET., What next for human gene therapy? BMJ., 2003, vol. This patent is Subject to a terminal dis 326: 1410-1411. claimer. Kappel et al., Regulating gene expression in transgenic animals. Current Opinion in Biotechnology 1992, vol. 3: 548-553. (21) Appl. No.: 13/052,632 Kimmelman J. Recent developments in gene transfer: risk and eth ics. -
Down Regulation of Membrane-Bound Neu3 Constitutes a New
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Publications of the IAS Fellows IJC International Journal of Cancer Down regulation of membrane-bound Neu3 constitutes a new potential marker for childhood acute lymphoblastic leukemia and induces apoptosis suppression of neoplastic cells Chandan Mandal1, Cristina Tringali2, Susmita Mondal1, Luigi Anastasia2, Sarmila Chandra3, Bruno Venerando2 and Chitra Mandal1 1 Infectious Diseases and Immunology Division, Indian Institute of Chemical Biology, A Unit of Council of Scientific and Industrial Research, Govt of India, 4, Raja S. C. Mullick Road, Kolkata 700032, India 2 Department of Medical Chemistry, Biochemistry and Biotechnology, University of Milan, and IRCCS Policlinico San Donato, San Donato, Milan, Italy 3 Department of Hematology, Kothari Medical Centre, Kolkata 700027, India Membrane-linked sialidase Neu3 is a key enzyme for the extralysosomal catabolism of gangliosides. In this respect, it regulates pivotal cell surface events, including trans-membrane signaling, and plays an essential role in carcinogenesis. In this report, we demonstrated that acute lymphoblastic leukemia (ALL), lymphoblasts (primary cells from patients and cell lines) are characterized by a marked down-regulation of Neu3 in terms of both gene expression (230 to 40%) and enzymatic activity toward ganglioside GD1a (225.6 to 30.6%), when compared with cells from healthy controls. Induced overexpression of Neu3 in the ALL-cell line, MOLT-4, led to a significant increase of ceramide (166%) and to a parallel decrease of lactosylceramide (255%). These events strongly guided lymphoblasts to apoptosis, as we assessed by the decrease in Bcl2/ Bax ratio, the accumulation of Neu3 transfected cells in the sub G0–G1 phase of the cell cycle, the enhanced annexin-V positivity, the higher cleavage of procaspase-3. -
Supplementary Information Biocementation of Soil by Calcite/Aragonite Precipitation Using Pseudomonas Azotoformans and Citrobact
Electronic Supplementary Material (ESI) for RSC Advances. This journal is © The Royal Society of Chemistry 2019 Supplementary Information Biocementation of soil by calcite/aragonite precipitation using Pseudomonas azotoformans and Citrobacter freundii derived enzymes Heba Abdel-Aleem1, Tarek Dishisha1, Amal Saafan2, Abduallah A. AbouKhadra3 and Yasser Gaber1,4,* 1Department of Microbiology and Immunology, Faculty of Pharmacy, Beni-Suef University, 62511, Beni-Suef, Egypt 2Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Menoufia university, Shebeen El-kom, Egypt 3Department of Civil Engineering, Facutly of Engineering, Beni-Suef University, 62511, Beni- Suef, Egypt 4Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Mutah University, Al-karak, 61710, Jordan *Corresponding author: E-mail: [email protected] Tel. int +20 82 216 2133 ; Fax. int +20 82 216 2133 1 Supplementary Table 1: strains identified using BCL card (Gram positive spore forming bacilli) Sample/test A1 B1 B2 Y1a Y2a BXYL - - - - - BXYL (betaxylosidase), LysA - - - - - LysA (L- lysine arylamidase), AspA - - - + - AspA (L aspartate arylamidase), LeuA + + + + + LeuA (leucine arylamidase), PheA - + - - - PheA (phenylalanine arylamidase), ProA - - - + - ProA (L-proline arylamidase), BGAL - - - - - BGAL (beta galactosidase), PyrA + + + + + PyrA (L-pyrrolydonyl arylamidase), AGAL - - - - - AGAL (alpha galactosidase), AlaA - - - + - AlaA (alanine arylamidase), TyrA - - - - - TyrA (tyrosine arylamidase), BNAG + + + + + BNAG (beta-N-acetyl -
Oxidative Stress, a New Hallmark in the Pathophysiology of Lafora Progressive Myoclonus Epilepsy Carlos Romá-Mateo *, Carmen Ag
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Digital.CSIC 1 Oxidative stress, a new hallmark in the pathophysiology of Lafora progressive myoclonus epilepsy Carlos Romá-Mateo1,2*, Carmen Aguado3,4*, José Luis García-Giménez1,2,3*, Erwin 3,4 3,5 1,2,3# Knecht , Pascual Sanz , Federico V. Pallardó 1 FIHCUV-INCLIVA. Valencia. Spain 2 Dept. Physiology. School of Medicine and Dentistry. University of Valencia. Valencia. Spain 3 CIBERER. Centro de Investigación Biomédica en Red de Enfermedades Raras. Valencia. Spain. 4 Centro de Investigación Príncipe Felipe. Valencia. Spain. 5 IBV-CSIC. Instituto de Biomedicina de Valencia. Consejo Superior de Investigaciones Científicas. Valencia. Spain. * These authors contributed equally to this work # Corresponding author: Dr. Federico V. Pallardó Dept. Physiology, School of Medicine and Dentistry, University of Valencia. E46010-Valencia, Spain. Fax. +34963864642 [email protected] 2 ABSTRACT Lafora Disease (LD, OMIM 254780, ORPHA501) is a devastating neurodegenerative disorder characterized by the presence of glycogen-like intracellular inclusions called Lafora bodies and caused, in most cases, by mutations in either EPM2A or EPM2B genes, encoding respectively laforin, a phosphatase with dual specificity that is involved in the dephosphorylation of glycogen, and malin, an E3-ubiquitin ligase involved in the polyubiquitination of proteins related with glycogen metabolism. Thus, it has been reported that laforin and malin form a functional complex that acts as a key regulator of glycogen metabolism and that also plays a crucial role in protein homeostasis (proteostasis). In relationship with this last function, it has been shown that cells are more sensitive to ER-stress and show defects in proteasome and autophagy activities in the absence of a functional laforin-malin complex. -
Base Excision Repair Deficient Mice Lacking the Aag Alkyladenine DNA Glycosylase
Proc. Natl. Acad. Sci. USA Vol. 94, pp. 13087–13092, November 1997 Genetics Base excision repair deficient mice lacking the Aag alkyladenine DNA glycosylase BEVIN P. ENGELWARD*†,GEERT WEEDA*‡,MICHAEL D. WYATT†,JOSE´ L. M. BROEKHOF‡,JAN DE WIT‡, INGRID DONKER‡,JAMES M. ALLAN†,BARRY GOLD§,JAN H. J. HOEIJMAKERS‡, AND LEONA D. SAMSON†¶ †Department of Molecular and Cellular Toxicology, Harvard School of Public Health, 665 Huntington Avenue, Boston, MA 02115; ‡Department of Cell Biology and Genetics, Medical Genetics Centre, Erasmus University, P.O. Box 1738, 3000 DR, Rotterdam, The Netherlands; and §Eppley Institute for Research in Cancer and Allied Diseases and Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE 68198-6805 Edited by Philip Hanawalt, Stanford University, Stanford, CA, and approved September 30, 1997 (received for review August 8, 1997) ABSTRACT 3-methyladenine (3MeA) DNA glycosylases 11). The precise biological effects of all of the DNA lesions remove 3MeAs from alkylated DNA to initiate the base repaired by mammalian 3MeA DNA glycosylases are not yet excision repair pathway. Here we report the generation of mice known for mammals, though there is strong evidence that deficient in the 3MeA DNA glycosylase encoded by the Aag 3MeA is cytotoxic (12), and other lesions may be mutagenic, (Mpg) gene. Alkyladenine DNA glycosylase turns out to be the namely Hx (13), 8oxoG (14), 1,N6-ethenoadenine («A), and major DNA glycosylase not only for the cytotoxic 3MeA DNA N2,3-ethenoguanine (15, 16). It is important to note that each lesion, but also for the mutagenic 1,N6-ethenoadenine («A) of these DNA lesions can arise spontaneously in the DNA of and hypoxanthine lesions. -
Salmonella Degrades the Host Glycocalyx Leading to Altered Infection and Glycan Remodeling
UC Davis UC Davis Previously Published Works Title Salmonella Degrades the Host Glycocalyx Leading to Altered Infection and Glycan Remodeling. Permalink https://escholarship.org/uc/item/0nk8n7xb Journal Scientific reports, 6(1) ISSN 2045-2322 Authors Arabyan, Narine Park, Dayoung Foutouhi, Soraya et al. Publication Date 2016-07-08 DOI 10.1038/srep29525 Peer reviewed eScholarship.org Powered by the California Digital Library University of California www.nature.com/scientificreports OPEN Salmonella Degrades the Host Glycocalyx Leading to Altered Infection and Glycan Remodeling Received: 09 February 2016 Narine Arabyan1, Dayoung Park2, Soraya Foutouhi1, Allison M. Weis1, Bihua C. Huang1, Accepted: 17 June 2016 Cynthia C. Williams2, Prerak Desai1,†, Jigna Shah1,‡, Richard Jeannotte1,3,§, Nguyet Kong1, Published: 08 July 2016 Carlito B. Lebrilla2,4 & Bart C. Weimer1 Complex glycans cover the gut epithelial surface to protect the cell from the environment. Invasive pathogens must breach the glycan layer before initiating infection. While glycan degradation is crucial for infection, this process is inadequately understood. Salmonella contains 47 glycosyl hydrolases (GHs) that may degrade the glycan. We hypothesized that keystone genes from the entire GH complement of Salmonella are required to degrade glycans to change infection. This study determined that GHs recognize the terminal monosaccharides (N-acetylneuraminic acid (Neu5Ac), galactose, mannose, and fucose) and significantly (p < 0.05) alter infection. During infection, Salmonella used its two GHs sialidase nanH and amylase malS for internalization by targeting different glycan structures. The host glycans were altered during Salmonella association via the induction of N-glycan biosynthesis pathways leading to modification of host glycans by increasing fucosylation and mannose content, while decreasing sialylation. -
Targeted Deletion of Alkylpurine-DNA-N-Glycosylase in Mice Eliminates Repair of 1,N6-Ethenoadenine and Hypoxanthine but Not of 3,N4-Ethenocytosine Or 8-Oxoguanine
Proc. Natl. Acad. Sci. USA Vol. 94, pp. 12869–12874, November 1997 Biochemistry Targeted deletion of alkylpurine-DNA-N-glycosylase in mice eliminates repair of 1,N6-ethenoadenine and hypoxanthine but not of 3,N4-ethenocytosine or 8-oxoguanine B. HANG*, B. SINGER*†,G.P.MARGISON‡, AND R. H. ELDER‡ *Donner Laboratory, Lawrence Berkeley National Laboratory, University of California, Berkeley, CA 94720; and ‡Cancer Research Campaign Section of Genome Damage and Repair, Paterson Institute for Cancer Research, Christie Hospital (National Health Service) Trust, Manchester, M20 4BX, United Kingdom Communicated by H. Fraenkel-Conrat, University of California, Berkeley, CA, October 2, 1997 (received for review September 18, 1997) ABSTRACT It has previously been reported that 1,N6- A separate line of experimentation to assess the in vivo ethenoadenine («A), deaminated adenine (hypoxanthine, Hx), mutagenicity of various modified bases in differing repair and 7,8-dihydro-8-oxoguanine (8-oxoG), but not 3,N4- backgrounds used defined synthetic oligonucleotides or glo- ethenocytosine («C), are released from DNA in vitro by the bally modified vectors (12–15). Related to this are numerous DNA repair enzyme alkylpurine-DNA-N-glycosylase (APNG). in vitro experiments also using site-directed mutagenesis in To assess the potential contribution of APNG to the repair of which replication efficiency and changed base pairing could be each of these mutagenic lesions in vivo, we have used cell-free quantitated [reviewed by Singer and Essigmann, (15)]. These extracts of tissues from APNG-null mutant mice and wild-type data all yielded basic information on the potential biological controls. The ability of these extracts to cleave defined oli- role of modified bases in the absence of any repair capacity. -
Active Hydrogen Bond Network (AHBN) and Applications for Improvement of Thermal Stability and Ph-Sensitivity of Pullulanase from Bacillus Naganoensis
RESEARCH ARTICLE Active Hydrogen Bond Network (AHBN) and Applications for Improvement of Thermal Stability and pH-Sensitivity of Pullulanase from Bacillus naganoensis Qing-Yan Wang1☯, Neng-Zhong Xie1☯, Qi-Shi Du1,2*, Yan Qin1, Jian-Xiu Li1,3, Jian- Zong Meng3, Ri-Bo Huang1,3 a1111111111 1 State Key Laboratory of Biomass Enzyme Technology, National Engineering Research Center for Non- Food Biorefinery, Guangxi Academy of Sciences, Nanning, Guangxi, China, 2 Gordon Life Science Institute, a1111111111 Belmont, MA, United States of America, 3 Life Science and Technology College, Guangxi University, a1111111111 Nanning, Guangxi, China a1111111111 a1111111111 ☯ These authors contributed equally to this work. * [email protected] Abstract OPEN ACCESS Citation: Wang Q-Y, Xie N-Z, Du Q-S, Qin Y, Li J-X, A method, so called ªactive hydrogen bond networkº (AHBN), is proposed for site-directed Meng J-Z, et al. (2017) Active Hydrogen Bond mutations of hydrolytic enzymes. In an enzyme the AHBN consists of the active residues, Network (AHBN) and Applications for functional residues, and conservative water molecules, which are connected by hydrogen Improvement of Thermal Stability and pH- bonds, forming a three dimensional network. In the catalysis hydrolytic reactions of hydro- Sensitivity of Pullulanase from Bacillus naganoensis. PLoS ONE 12(1): e0169080. lytic enzymes AHBN is responsible for the transportation of protons and water molecules, doi:10.1371/journal.pone.0169080 and maintaining the active and dynamic structures of enzymes. The AHBN of pullulanase Editor: Eugene A. Permyakov, Russian Academy of BNPulA324 from Bacillus naganoensis was constructed based on a homologous model Medical Sciences, RUSSIAN FEDERATION structure using Swiss Model Protein-modeling Server according to the template structure of Received: October 6, 2016 pullulanase BAPulA (2WAN). -
Supplementary Materials
Supplementary materials Supplementary Table S1: MGNC compound library Ingredien Molecule Caco- Mol ID MW AlogP OB (%) BBB DL FASA- HL t Name Name 2 shengdi MOL012254 campesterol 400.8 7.63 37.58 1.34 0.98 0.7 0.21 20.2 shengdi MOL000519 coniferin 314.4 3.16 31.11 0.42 -0.2 0.3 0.27 74.6 beta- shengdi MOL000359 414.8 8.08 36.91 1.32 0.99 0.8 0.23 20.2 sitosterol pachymic shengdi MOL000289 528.9 6.54 33.63 0.1 -0.6 0.8 0 9.27 acid Poricoic acid shengdi MOL000291 484.7 5.64 30.52 -0.08 -0.9 0.8 0 8.67 B Chrysanthem shengdi MOL004492 585 8.24 38.72 0.51 -1 0.6 0.3 17.5 axanthin 20- shengdi MOL011455 Hexadecano 418.6 1.91 32.7 -0.24 -0.4 0.7 0.29 104 ylingenol huanglian MOL001454 berberine 336.4 3.45 36.86 1.24 0.57 0.8 0.19 6.57 huanglian MOL013352 Obacunone 454.6 2.68 43.29 0.01 -0.4 0.8 0.31 -13 huanglian MOL002894 berberrubine 322.4 3.2 35.74 1.07 0.17 0.7 0.24 6.46 huanglian MOL002897 epiberberine 336.4 3.45 43.09 1.17 0.4 0.8 0.19 6.1 huanglian MOL002903 (R)-Canadine 339.4 3.4 55.37 1.04 0.57 0.8 0.2 6.41 huanglian MOL002904 Berlambine 351.4 2.49 36.68 0.97 0.17 0.8 0.28 7.33 Corchorosid huanglian MOL002907 404.6 1.34 105 -0.91 -1.3 0.8 0.29 6.68 e A_qt Magnogrand huanglian MOL000622 266.4 1.18 63.71 0.02 -0.2 0.2 0.3 3.17 iolide huanglian MOL000762 Palmidin A 510.5 4.52 35.36 -0.38 -1.5 0.7 0.39 33.2 huanglian MOL000785 palmatine 352.4 3.65 64.6 1.33 0.37 0.7 0.13 2.25 huanglian MOL000098 quercetin 302.3 1.5 46.43 0.05 -0.8 0.3 0.38 14.4 huanglian MOL001458 coptisine 320.3 3.25 30.67 1.21 0.32 0.9 0.26 9.33 huanglian MOL002668 Worenine -
Letters to Nature
letters to nature Received 7 July; accepted 21 September 1998. 26. Tronrud, D. E. Conjugate-direction minimization: an improved method for the re®nement of macromolecules. Acta Crystallogr. A 48, 912±916 (1992). 1. Dalbey, R. E., Lively, M. O., Bron, S. & van Dijl, J. M. The chemistry and enzymology of the type 1 27. Wolfe, P. B., Wickner, W. & Goodman, J. M. Sequence of the leader peptidase gene of Escherichia coli signal peptidases. Protein Sci. 6, 1129±1138 (1997). and the orientation of leader peptidase in the bacterial envelope. J. Biol. Chem. 258, 12073±12080 2. Kuo, D. W. et al. Escherichia coli leader peptidase: production of an active form lacking a requirement (1983). for detergent and development of peptide substrates. Arch. Biochem. Biophys. 303, 274±280 (1993). 28. Kraulis, P.G. Molscript: a program to produce both detailed and schematic plots of protein structures. 3. Tschantz, W. R. et al. Characterization of a soluble, catalytically active form of Escherichia coli leader J. Appl. Crystallogr. 24, 946±950 (1991). peptidase: requirement of detergent or phospholipid for optimal activity. Biochemistry 34, 3935±3941 29. Nicholls, A., Sharp, K. A. & Honig, B. Protein folding and association: insights from the interfacial and (1995). the thermodynamic properties of hydrocarbons. Proteins Struct. Funct. Genet. 11, 281±296 (1991). 4. Allsop, A. E. et al.inAnti-Infectives, Recent Advances in Chemistry and Structure-Activity Relationships 30. Meritt, E. A. & Bacon, D. J. Raster3D: photorealistic molecular graphics. Methods Enzymol. 277, 505± (eds Bently, P. H. & O'Hanlon, P. J.) 61±72 (R. Soc. Chem., Cambridge, 1997). -
Partial Purification of the Mammalian Alpha- Glucosidase Inhibitor from Melothria Sp. (Fam. Cucurbitaceae) Leaves and Stem Extract: in Vitro
44 Partial Purification of the Mammalian Alpha- glucosidase Inhibitor from Melothria sp. (Fam. Cucurbitaceae) Leaves and Stem Extract: In Vitro Edmark C. Kamantigue1*, Noel S. Quiming2, Judylynn N. Solidum3, and Marilou G. Nicolas2 1 Pharmacy Department, College of Allied Health, National University, 2Department of Physical Science and Mathematics, College of Arts and Sciences, University of the Philippines Manila, and 3Pharmaceutical Chemistry Department, College of Pharmacy, University of the Philippines Manila *Corresponding Author: [email protected] Abstract: Diabetes Mellitus Type 2 (DM2) is a chronic disease characterized by insufficient insulin levels, pancreatic beta cells function loss and insulin resistance in peripheral tissue. Voglibose and acarbose are the clinically used alpha-glucosidase inhibitor; however, adverse effects such as nausea, diarrhea, and bloating hinder the utilization of these agents. Hence, there is a need to explore for an alternative drug that has fewer side effects, better activity, and more affordable than the current commercial drugs. In this study, Melothria sp. was purified using normal phase column chromatography. Seven fractions (fraction A-G) were separated and tested for mammalian alpha-glucosidase assay in vitro and phytochemical screening was conducted to determine the metabolites present in each fraction. Fraction F showed a promising activity against the enzyme and comparable to other natural products and commercial alpha- glucosidase agent, acarbose. Phenolic compounds such as tannins and flavonoids based on the phytochemical screening were detected present in the sample which can be responsible in the inhibition activity of the semi-purified extracts. Keywords: Diabetes Mellitus; Mammalian alpha-glucosidase; Piri-pipino; Cucurbitaceae; Melothria sp. 45 1. -
Neuraminidase Inhibitor Zanamivir Ameliorates Collagen-Induced Arthritis
International Journal of Molecular Sciences Article Neuraminidase Inhibitor Zanamivir Ameliorates Collagen-Induced Arthritis Bettina Sehnert 1,*, Juliane Mietz 1, Rita Rzepka 1, Stefanie Buchholz 1, Andrea Maul-Pavicic 1, Sandra Schaffer 1, Falk Nimmerjahn 2 and Reinhard E. Voll 1,* 1 Department of Rheumatology and Clinical Immunology, Medical Center–University of Freiburg, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany; [email protected] (J.M.); [email protected] (R.R.); [email protected] (S.B.); [email protected] (A.M.-P.); [email protected] (S.S.) 2 Department of Biology, Institute of Genetics, Friedrich-Alexander University Erlangen-Nürnberg (FAU), 91058 Erlangen, Germany; [email protected] * Correspondence: [email protected] (B.S.); [email protected] (R.E.V.); Tel.: +49-761-270-71021 (B.S.); +49-761-270-34490 (R.E.V.) Abstract: Altered sialylation patterns play a role in chronic autoimmune diseases such as rheumatoid arthritis (RA). Recent studies have shown the pro-inflammatory activities of immunoglobulins (Igs) with desialylated sugar moieties. The role of neuraminidases (NEUs), enzymes which are responsible for the cleavage of terminal sialic acids (SA) from sialoglycoconjugates, is not fully understood in RA. We investigated the impact of zanamivir, an inhibitor of the influenza virus neuraminidase, and mammalian NEU2/3 on clinical outcomes in experimental arthritides studies. The severity of arthritis was monitored and IgG titers were measured by ELISA. (2,6)-linked SA was determined on IgG by ELISA and on cell surfaces by flow cytometry. Zanamivir at a dose of 100 mg/kg (zana- Citation: Sehnert, B.; Mietz, J.; 100) significantly ameliorated collagen-induced arthritis (CIA), whereas zana-100 was ineffective Rzepka, R.; Buchholz, S.; in serum transfer-induced arthritis.