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Involvement of Sphingosine 1-Phosphate in Nerve Growth Factor-Mediated Neuronal Survival and Differentiation
The Journal of Neuroscience, September 15, 1997, 17(18):6952–6960 Involvement of Sphingosine 1-Phosphate in Nerve Growth Factor-Mediated Neuronal Survival and Differentiation Lisa Cseh Edsall, Grisha G. Pirianov, and Sarah Spiegel Department of Biochemistry and Molecular Biology, Georgetown University Medical Center, Washington, DC 20007 Sphingolipid metabolites, such as ceramide and sphingosine- elicited by suboptimal doses of NGF. Moreover, SPP also pro- 1-phosphate (SPP), are emerging as a new class of second tected PC12 cells from apoptosis induced by serum with- messengers involved in cellular proliferation, differentiation, and drawal. To further substantiate a role for SPP in the cytopro- apoptosis. Nerve growth factor (NGF), a neurotrophic factor for tective actions of NGF, we found that N,N-dimethylsphingosine, pheochromocytoma PC12 cells, induced a biphasic increase in a competitive inhibitor of sphingosine kinase, also induced the activity of sphingosine kinase, the enzyme that catalyzes apoptosis and interfered with the survival effect of NGF. These the formation of SPP. This activation was blocked by K252a, an effects were counteracted by exogenous SPP. Moreover, other inhibitor of tyrosine kinase A (trkA). A rapid 1.7-fold increase structurally related compounds, such as dihydrosphingosine was followed by a marked prolonged increase reaching a max- 1-phosphate and lysophosphatidic acid, had no significant pro- imum of fourfold to fivefold stimulation with a concomitant tective effects. Our results suggest that activation of sphin- increase in SPP levels and a corresponding decrease in endog- gosine kinase and subsequent formation of SPP may play an enous sphingosine levels. Levels of ceramide, the precursor of important role in the differentiation and survival effects induced sphingosine, were only slightly decreased by NGF in serum- by NGF. -
9-Deoxy-A9,A12-13,14
Proc. Natl. Acad. Sci. USA Vol. 81, pp. 1317-1321, March 1984 Biochemistry 9-Deoxy-A9,A12-13,14-dihydroprostaglandin D2, a metabolite of prostaglandin D2 formed in human plasma (dehydration product of prostaglandin D2/serum albumin/cell growth inhibition) YOSHIHARU KIKAWA*, SHUH NARUMIYA*, MASANORI FUKUSHIMAt, HIROHISA WAKATSUKAt, AND OSAMU HAYAISHI§ *Department of Medical Chemistry, Kyoto University Faculty of Medicine, Sakyo-ku, Kyoto 606, Japan; tDepartment of Internal Medicine and Laboratory of Chemotherapy, Aichi Cancer Center, Chikusa-ku, Nagoya 464, Japan; tResearch Institute, Ono Pharmaceutical Co., Shimamoto, Mishima, Osaka 618, Japan; and §Osaka Medical College, Daigaku-cho, Takatsuki, Osaka 569, Japan Contributed by Osamu Hayaishi, November 8, 1983 ABSTRACT Incubation of prostaglandin D2 (PGD2) with from Sigma. Dimethylisopropylsilyl (Me2iPrSi) imidazole human plasma yielded a product that has been identified as 9- and methoxyamine hydrochloride were from Tokyo Kasei deoxy-9,10-didehydro-12,13-cdidehydro-13,14-dihydro-PGD2 (Tokyo). Sep-pak silica and Sep-pak C18 cartridges were (9-deoxy-_9,9'2-13,14-dihydro-PGD2). The identification was from Waters Associates. Precoated silica gel plates [G60- based on mass spectrometry, UV spectrometry, mobilities and (F254)] with concentration zones and silica gel 60 for column retention time on TLC and HPLC, and NMR. The conversion chromatography were from Merck. Sephadex LH-20 was a of PGD2 to this product was dependent on the incubation time product of Pharmacia. Solvents used in the extraction of and the amount of plasma added to a reaction mixture and was PGD2 metabolites for identification were distilled before use. abolished by prior boiling. -
Metabolic Tracing of NAD Precursors Using Strategically Labelled Isotopes of NMN
A thesis submitted in fulfilment of the requirements for the degree of Doctor of Philosophy Metabolic tracing of NAD+ precursors using strategically labelled isotopes of NMN by Lynn-Jee Kim Supervisors Dr. Lindsay E. Wu (Primary) Prof. David A. Sinclair (Joint-Primary) Dr. Lake-Ee Quek (Co-supervisor) School of Medical Sciences Faculty of Medicine Thesis/Dissertation Sheet Surname/Family Name: Kim Given Name/s: Lynn-Jee Abbreviation for degree as give in PhD the University calendar: Faculty: Faculty of Medicine School: School of Medical Sciences + Thesis Title: Metabolic tracing of NAD precursors using strategically labelled isotopes of NMN Abstract 350 words maximum: (PLEASE TYPE) Nicotinamide adenine dinucleotide (NAD+) is an important cofactor and substrate for hundreds of cellular processes involved in redox homeostasis, DNA damage repair and the stress response. NAD+ declines with biological ageing and in age-related diseases such as diabetes and strategies to restore intracellular NAD+ levels are emerging as a promising strategy to protect against metabolic dysfunction, treat age-related conditions and promote healthspan and longevity. One of the most effective ways to increase NAD+ is through pharmacological supplementation with NAD+ precursors such as nicotinamide mononucleotide (NMN) which can be orally delivered. Long term administration of NMN in mice mitigates age-related physiological decline and alleviates the pathophysiologies associated with a high fat diet- and age-induced diabetes. Despite such efforts, there are certain aspects of NMN metabolism that are poorly understood. In this thesis, the mechanisms involved in the utilisation and transport of orally administered NMN were investigated using strategically labelled isotopes of NMN and mass spectrometry. -
Suppression of Poly(ADP-Ribose)
Proc. Nati. Acad. Sci. USA Vol. 81, pp. 7132-7136, November 1984 Cell Biology Induction of murine teratocarcinoma cell differentiation by suppression of poly(ADP-ribose) synthesis (NADW/retinoic acid/3-aminobenzamide/immunofluorescence) YASUHIRO OHASHI*t, KUNIHIRO UEDA*t, OSAMU HAYAISHI*§, KouICHI IKAI¶, AND OTSURA NIWAII Departments of *Medical Chemistry, ¶Dermatology, and "Experimental Radiology, Kyoto University Faculty of Medicine, Yoshida, Sakyo-ku, Kyoto 606, Japan Contributed by Osamu Hayaishi, July 27, 1984 ABSTRACT Poly(ADP-ribose) synthesizing activity in present study, we report a marked decrease in nuclear po- mouse teratocarcinoma EC-Al cells decreased markedly dur- ly(ADP-ribose) synthesizing activity at a very early stage of ing differentiation induced by retinoic acid; the activities as- differentiation of teratocarcinoma cells induced by retinoic sayed in permeabilized cells decreased to 25% and 10% of the acid. Furthermore, we present evidence suggesting that ex- activity of control (uninduced cells) 2 and 3 days, respectively, ogenously added inhibitors of poly(ADP-ribose) synthetase after the addition of 0.1 ,uM retinoic acid to the culture medi- can induce the differentiation of these cells. um. This change preceded changes in morphology and DNA synthesis, which became prominent after 4 days. The decrease MATERIALS AND METHODS in poly(ADP-ribose) synthesizing activity appeared to be caused by a diminution of the synthetase protein and not by a Chemicals. [adenine-U-14C]NAD+ (266 Ci/mol; 1 Ci = 37 decrease in its catalytic activity, because the full activity dis- GBq) and [methyl-3H]dTTP (30 Ci/mmol) were purchased closed by DNase I treatment decreased in parallel, albeit at from Amersham. -
Effects of 5-Hydroxykynurenamine, a New Serotonin Metabolite
Proc. Nat. Acad. Sci. USA Vol. 71, No. 1, pp. 122-124, January 1974 Effects of 5-Hydroxykynurenamine, a New Serotonin Metabolite, on Isolated Dog Basilar Arteries (serotonin/amine/antagonist/artery) NOBORU TODA*, TAKASHI TOKUYAMAt, SIRO SENOHt, FUSAO HIRATA§, AND OSAMU HAYAISHI§ * Department of Pharmacology, and § Department of Medical Chemistry, Kyoto University Faculty of Medicine, Kyoto; t Department of Chemistry, Osaka City University Faculty of Science, Osaka; and $ Central Research Institute, Suntory Ltd., Osaka, Japan Contributed by Osamu Hayaishi, September 10, 1973 ABSTRACT Serotonin and 5-hydroxykynurenamine HK and serotonin were added directly to the bathing me- caused dose-related contractions in the spiral strips of dium in cumulative concentrations at the time when the dose- dog basilar arteries. The potency of 5-hydroxykynuren- amine was approximately 1/100 that of serotonin, the response curve was obtained. former frequently causing a transient relaxation preceding the contraction. The contractile responses to 5-hydroxy- RESULTS kynurenamine and serotonin were attenuated by methy- Serotonin in concentrations ranging from 10-9 to 10-5 M sergi(le. Treatment with 5-hydroxykynurenamine inhib- caused a dose-related increase in the tension of basilar arterial ited the response to serotonin, and this inhibitory effect was not completely reversed by removal of 5-hydroxy- strips (Fig. 1A). Contractile responses to serotonin were kvnurenamine from the bathing medium. The contractile reproducible five times when preparations were repeatedly response to K+ was only slightly attenuated by high con- washed and equilibrated in normal solutions for 40-60 min. centrations of 5-hydroxykynurenamine. It appears that 5-HEK (5 X 10-' to 5 X 10-5 M) caused slowly developing 5-hydroxykynurenamine and serotonin share receptors in contractions in a dose-dependent manner (Fig. -
IUBMB Newsletter Issue 2.Pdf
IUBMB NEWS Issue 2 October 2016 President’s Message IUBMB aims to promote research and education in In This Issue Biochemistry and Molecular Biology. In this regard, over the President’s Message years we have channelled great efforts into the research aspects of our science. We now consider it timely to turn our Report on the 16th IUBMB attention to educational initiatives. Conference / Young To address this aim and in collaboration with FEBS, we are organising a conference on Education in Biochemistry and Molecular Biology, to be held in Scientists’ Program Rehovot (Israel) in September 2017. The conference seeks to provide a think-tank Tang Prize Foundation setting in which to draw up ideas to improve the current approach to teaching these subjects, and to generate a series of recommendations to be shared with Awardees / IUBMB Travel the educational community. In this regard, this conference will serve to propel the Fellowships changes that are required to bring education in biochemistry and molecular biology st at all levels into the 21 century. Another Way to Think About Another important aspect of education is to provide young scientists from Disease by Gregory Petsko developing countries the opportunity to attend international congresses and meetings. IUBMB is firmly committed to this endeavour and devotes significant Retrospective — financial resources to this end. Given that the number of applications from African countries is very low, I wish to encourage our young African colleagues to apply Osamu Hayaishi and benefit from IUBMB travel awards and Wood-Whelan fellowships. An Appreciation — IUBMB is also launching a new activity, namely Focused Meetings. -
From a Pseudomonad, Catalyzes the Oxygenation of L-Lysi an A,E
Proc. Nat. Acad. Sci. USA Vol. 69, No. 12, pp. 3723-3726, December 1972 Alkylamine-Dependent Amino-Acid Oxidation by Lysine Monooxygenase- Fragmented Substrate of Oxygenase (Pseudomonas/enzyme/aminefamide/flavoprotein) SHOZO YAMAMOTO, TAKASHI YAMAUCHI, AND OSAMU HAYAISHI Department of Medical Chemistry, Kyoto University Faculty of Medicine, Kyoto, Japan Contributed by Osamu Hayaishi, October 10, 1972d ABSTRACT Lysine monooxygenase catalyzes the cIxy- a significant role in the catalysis of the enzyme. It would be of a rre- genative decarboxylation of L-lysine and produces coi heefoeto investigate the reaction of the enzyme sponding acid amide. L-Alanine was inactive as substriate. However, when propylamine was present, oxidation,Ibut in the presence of both a-monoamino acids and alkylamines- not oxygenation, of alanine was demonstrated with the of various carbon chain lengths-the two fragments of the oxygenase. Alanine was converted to pyruvate, with the normal substrate. liberation of ammonia and hydrogen peroxide, but proyI~yl- amine remained unchanged. Other a-monoamino accids MATERIALS AND METHODS were also oxidized in the presence of alkylamines wi various carbon chain lengths. The highest oxidase actiiV~it Lysine monooxygenase was purified and assayed as described was observed when the total chain length of both anm Lio (1). Pyruvate was determined with the aid of rabbit-muscle acid and amine was nearly identical with that of lysiine, lactate dehydrogenase Type II (Sigma) (4) or as its hydrazone Available evidence indicates that the amine-depend,lent (5). Oxygen consumption was followed by an oxygen electrode 5ine amino-acid oxidase activity is associated with the lys (1). As the solubility of oxygen in water decreases when the oxygenase activity. -
Sphingosine-1-Phosphate Links Persistent STAT3 Activation, Chronic Intestinal Inflammation, and Development of Colitis-Associate
Cancer Cell Article Sphingosine-1-Phosphate Links Persistent STAT3 Activation, Chronic Intestinal Inflammation, and Development of Colitis-Associated Cancer Jie Liang,1,3,4 Masayuki Nagahashi,1,2,4 Eugene Y. Kim,1,4 Kuzhuvelil B. Harikumar,1 Akimitsu Yamada,1,2 Wei-Ching Huang,1 Nitai C. Hait,1 Jeremy C. Allegood,1 Megan M. Price,1 Dorit Avni,1 Kazuaki Takabe,1,2 Tomasz Kordula,1 Sheldon Milstien,1 and Sarah Spiegel1,* 1Department of Biochemistry and Molecular Biology and the Massey Cancer Center 2Division of Surgical Oncology, Department of Surgery Virginia Commonwealth University School of Medicine, Richmond, VA 23298, USA 3Present address: State Key Laboratory of Cancer Biology, Xi’an, Shannxi 710032, China 4These authors contributed equally to this work *Correspondence: [email protected] http://dx.doi.org/10.1016/j.ccr.2012.11.013 SUMMARY Inflammatory bowel disease is an important risk factor for colorectal cancer. We show that sphingosine-1- phosphate (S1P) produced by upregulation of sphingosine kinase 1 (SphK1) links chronic intestinal inflam- mation to colitis-associated cancer (CAC) and both are exacerbated by deletion of Sphk2. S1P is essential for production of the multifunctional NF-kB-regulated cytokine IL-6, persistent activation of the transcription factor STAT3, and consequent upregulation of the S1P receptor, S1PR1. The prodrug FTY720 decreased SphK1 and S1PR1 expression and eliminated the NF-kB/IL-6/STAT3 amplification cascade and development of CAC, even in Sphk2À/À mice, and may be useful in treating colon cancer in individuals with ulcerative colitis. Thus, the SphK1/S1P/S1PR1 axis is at the nexus between NF-kB and STAT3 and connects chronic inflammation and CAC. -
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296 Proc. Jpn. Acad., Ser. B 83 (2007) [Vol. 83, Review Physiology and pathophysiology of prostanoid receptors By Shuh NARUMIYAÃ1,Ã2;y (Communicated by Tasuku HONJO, M.J.A.) Abstract: Prostanoids, consisting of prostaglandins (PGs) and thromboxanes (TXs), are oxygenated products of C20 unsaturated fatty acids. They include PGD2,PGE2,PGF2 ,PGI2, and TXA2. Given that aspirin-like nonsteroidal anti-inflammatory drugs exert their actions by suppressing prostanoid production, prostanoids have been implicated in processes inhibited by these drugs, including inflammation, fever, and pain. Prostanoids also contribute to vascular homeostasis, reproduction, and regulation of kidney and gastrointestinal functions. How prostanoids exert such a variety of actions had remained unclear, however. Prostanoids are released outside of cells immediately after their synthesis and exert their actions by binding to receptors on target cells. We have identified a family of eight types or subtypes of G protein– coupled receptors that mediate prostanoid actions. Another G protein–coupled receptor was also identified as an additional receptor for PGD2. Genes for these receptors have been individually disrupted in mice, and analyses of these knockoutmicehavenotonlyelucidatedthemolecular and cellular mechanisms of known prostanoid actions but also revealed previously unknown actions. In this article, I review the physiological and pathophysiological roles of prostanoids and their receptors revealed by these studies. Keywords: prostaglandin, thromboxane, cyclooxygenase, G protein–coupled receptor Prostanoids, consisting of prostaglandins the 5-cis, 13-trans, and 17-cis double bonds, re- (PGs) and thromboxanes (TXs), are oxygenated spectively. Given that arachidonic acid is the most products derived from C20 unsaturated fatty acids abundant among these precursor fatty acids in most (Fig. -
Physiology News
PHYSIOLOGY NEWS summer 2009 I number 75 Calcium signalling insights from Sir Michael Berridge Physiology 2009 – back at UCD after an 18 year break Conference networking leads to post-doc position on a Japanese tropical island PowerLab : buy or rent Easy to use, easy to acquire PowerLab® Teaching Systems with LabTutor® and LabChart® soft ware have set the benchmarks in quality, ease-of-use, safety and fl exibility for over 20 years. Now, we’re proud to introduce another industry fi rst...the option to either buy or rent this powerful technology! Th e choice of purchase or rental options makes it even easier to get the world’s leading data acquisition system for Buy or Rent life science education. Our new Smart Rent Option off ers brand-new systems, low entry cost and free experiment soft ware upgrades. Talk to us to fi nd out more. Intuitive PowerLab Teaching Systems include experiments for human physiology, exercise physiology, pharmacology, Flexible Tool neurophysiology, psychophysiology, biology and more. Th e fl exibility of PowerLab systems adds to their cost- eff ectiveness – for purchasers and renters. Choose from over 100 experiments and 400 exercises More for introductory through to advanced levels. You can select the software for your courses and use authoring tools to modify/create experiments. Choose from over Experiments 20 Teaching Systems or let us create a customised solution. Contact us for an obligation-free demonstration. Tel: 01865 891 623 Email: [email protected] Web: www.adinstruments.com/buy_rent EQUIPMENT CERTIFIED FOR HUMAN CONNECTION UK • GERMANY • USA • BRAZIL • CHILE • INDIA • JAPAN • CHINA • MALAYSIA • NEW ZEALAND • AUSTRALIA CELEBRATING OVER 20 YEARS OF INNOVATIONS ADI_InstStudent_UK_PhysioNews.indd 1 15/5/09 2:32:20 PM PHYSIOLOGY NEWS Editorial 3 Meetings The Society’s dog. -
Thomas Cech CV
CURRICULUM VITAE Thomas R. Cech Education and Training B.A. in Chemistry, Grinnell College, Grinnell, Iowa 1970 Ph.D. in Chemistry, University of California, Berkeley with Prof. John E. Hearst 1975 Postdoctoral Fellow, Dept. of Biology, Massachusetts Institute of Technology with Prof. Mary Lou Pardue 1975-77 Positions University of Colorado Boulder Assistant Professor of Chemistry 1978-82 Associate Professor of Chemistry 1982-83 Professor of Chemistry and Biochemistry 1983- Professor of Molecular, Cellular and Developmental Biology (joint appointment) 1983- American Cancer Society Professor 1987- University of Colorado Anschutz Medical Campus Professor of Biochemistry and Molecular Genetics Member, CU Cancer Center 1988- Investigator, Howard Hughes Medical Institute 1988-99; 2009- University of Colorado Distinguished Professor 1990- President, Howard Hughes Medical Institute 2000-09 Director, University of Colorado BioFrontiers Institute (formerly the 2009- Colorado Initiative in Molecular Biotechnology) Honors and Awards National Science Foundation Graduate Fellow 1970-75 Public Health Service Research Fellow, National Cancer Institute 1975-77 Research Career Development Award, National Cancer Institute 1980-85 Passano Foundation Young Scientist Award 1984 Harrison Howe Award 1984 Guggenheim Fellow 1985-86 Pfizer Award in Enzyme Chemistry 1985 Esquire Magazine Register 1985 Denver Post Westerner of the Year 1986 U. S. Steel Award in Molecular Biology 1987 Member, National Academy of Sciences 1987 Honorary Degree, Doctor of Science, Grinnell College 1987 V. D. Mattia Award 1987 Member, American Academy of Arts and Sciences 1988 Newcombe-Cleveland Award, AAAS (with Arthur J. Zaug) 1988 Heineken Prize, Royal Netherlands Academy of Sciences 1988 Gairdner Foundation International Award 1988 Louisa Gross Horwitz Prize (with Phillip A. -
A History of the ASBMB Annual Meeting
COMPETE FOR BEST POSTER AWARDS IN ANAHEIM September 2009 A History of the ASBMB Annual Meeting American Society for Biochemistry and Molecular Biology ASBMB Annual Meeting Get Ready to Meet in California! Anaheim Awaits April 24–28, 2010 www.asbmb.org/meeting2010 Travel Awards and Abstract Submission Deadline: November 4th, 2009 Registration Open September 2009 AnaheimAd FINAL.indd 1 6/15/09 1:00:42 PM contents SEPTEMBER 2009 On the Cover: A look at the history of the ASBMB Annual society news Meeting. 2 President’s Message 22 6 News from the Hill 9 Washington Update 10 Retrospective: Ephraim Katchalski Katzir (1916-2009) JBC minireview 13 JBC Highlights Computational series looks at computational Biochemistry biochemistry. 14 Member Spotlight 13 special interest 16 Lifting the Veil on Biological Research 18 Mildred Cohn: Isotopic and Spectroscopic Trailblazer 22 History of the ASBMB Annual Meeting 2010 annual meeting 26 The Chemistry of Life A profile of 28 New Frontiers in Genomics ASBMB’s first and Proteomics woman president, Mildred Cohn. 30 Hypertension: Molecular 18 Mechanisms, Treatment and Disparities departments 32 Minority Affairs 33 Lipid News 34 BioBits 36 Career Insights 38 Education and Training resources Scientific Meeting Calendar erratum online only The article on the 2009 ASBMB election results in the August issue of ASBMB Today mistakenly identified Charles Brenner as professor and head of the Biochemistry Department at Dartmouth Medical School. He is, in fact, head of biochemistry at University of Iowa’s Carver College of Medicine. September 2009 ASBMB Today 1 president’smessage A monthly publication of The American Society for Biochemistry and Molecular Biology Wimps? Officers Gregory A.