Name: one-step negative chromatographic purification of helicobacter pylori neutrophil-activating protein overexpressed in escherichia coli in batch mode
Uploaded: 2016-06-18T14:00:00
Description: Watch this Scientific Journal Video about One-step Negative Chromatographic Purification of Helicobacter pylori Neutrophil-activating Protein Overexpressed in Escherichia coli in Batch Mode at JoVE.co

We thank Dr. Chao-Sheng Cheng at National Tsing Hua University, Taiwan, for performing the circular dichroism measurement. We also thank Drs. Evanthia Galanis and Ianko D. Iankov at Mayo Clinic, USA, for providing the anti-HP-NAP monoclonal antibody. We appreciate Drs. Han-Wen Chang and Chung-Chu Chen at Mackay Memorial Hospital, Hsinchu, Taiwan, for providing advice for IRB application, Mr. Te-Lung Tsai at the Mackay Memorial Hospital, Hsinchu, Taiwan, for supervising the analysis of isolated neutrophils, and Ms. Ju-Chen Weng at National Tsing Hua University, Taiwan, for her technical assistance. This work was supported by grants from the Ministry of Science and Technology of Taiwan (MOST 104-2311-B-007-003, NSC101-2311-B-007-007 and NSC98-2311-B-007-006-MY3), the Joint Research Program of National Tsing Hua University and Mackay Memorial Hospital (100N7727E1, 101N2727E1, 103N2773E1), and the research program of National Tsing Hua University (104N2052E1).

Menselijk bloed werd verzameld van gezonde vrijwilligers met voorafgaande schriftelijke geïnformeerde toestemming en goedkeuring van de Institutional Review Board van de National Tsing Hua University, Hsinchu, Taiwan. 1. Expressie van recombinant HP-NAP in E. coli <ol><li> Bereid het plasmide pET42a-NAP die de DNA sequentie van HP-NAP van H. 26.695 pylori stam als hiervoor beschreven 16. Bereid de plasmiden die de DNA-sequentie van HP-NAP de gewenste puntmutaties beschrev...

<ol>
	<li>Brunette, G. W., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Chapter+3,+Infectious+diseases+related+to+travel.">Chapter 3, Infectious diseases related to travel.</a> CDC Health Information for International Travel 2016. , (2015).</li><li>Bauer, B., Meyer, T. F. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+human+gastric+pathogen+Helicobacter+pylori+its+association+with+gastric+cancer+and+ulcer+disease.">The human gastric pathogen Helicobacter pylori its association with gastric cancer and ulcer disease.</a> Ulcers. 2011, 340157 (2011).</li><li>Malfertheiner, P., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Management+of+Helicobacter+pylori+infection--the+Maastricht+IV/+Florence+Consensus+Report.+Gut.">Management of Helicobacter pylori infection--the Maastricht IV/ Florence Consensus Report. Gut.</a> Gut. 61 (5), 646-664 (2012).</li><li>Evans, D. J., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Characterization+of+a+Helicobacter+pylori+neutrophil-activating+protein.">Characterization of a Helicobacter pylori neutrophil-activating protein.</a> Infect. Immun. 63 (6), 2213-2220 (1995).</li><li>Fu, H. W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Helicobacter+pylori+neutrophil-activating+protein:+from+molecular+pathogenesis+to+clinical+applications.">Helicobacter pylori neutrophil-activating protein: from molecular pathogenesis to clinical applications.</a> World J. Gastroenterol. 20 (18), 5294-5301 (2014).</li><li>de Bernard, M., D'Elios, M. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+immune+modulating+activity+of+the+Helicobacter+pylori+HP-NAP:+Friend+or+foe?.">The immune modulating activity of the Helicobacter pylori HP-NAP: Friend or foe?.</a> Toxicon. 56 (7), 1186-1192 (2010).</li><li>Malfertheiner, P., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Safety+and+immunogenicity+of+an+intramuscular+Helicobacter+pylori+in+noninfected+volunteers:+a+phase+I+study.">Safety and immunogenicity of an intramuscular Helicobacter pylori in noninfected volunteers: a phase I study.</a> Gastroenterology. 135 (3), 787-795 (2008).</li><li>Codolo, G., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=HP-NAP+inhibits+the+growth+of+bladder+cancer+in+mice+by+activating+a+cytotoxic+Th1+response.">HP-NAP inhibits the growth of bladder cancer in mice by activating a cytotoxic Th1 response.</a> Cancer Immunol. Immunother. 61 (1), 31-40 (2012).</li><li>Codolo, G., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=The+neutrophil-activating+protein+of+Helicobacter+pylori+Th2+inflammation+in+ovalbumin-induced+allergic+asthma.">The neutrophil-activating protein of Helicobacter pylori Th2 inflammation in ovalbumin-induced allergic asthma.</a> Cell. Microbiol. 10 (11), 2355-2363 (2008).</li><li>Del Prete, ., G, , et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Immunosuppression+of+TH2+responses+in+Trichinella+spiralis+by+Helicobacter+pylori+neutrophil-activating+protein.">Immunosuppression of TH2 responses in Trichinella spiralis by Helicobacter pylori neutrophil-activating protein.</a> J. Allergy Clin. Immunol. 122 (5), 908-913.e5 (2008).</li><li>Tang, R. X., Luo, D. J., Sun, A. H., Yan, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Diversity+of+Helicobacter+pylori+in+expression+of+antigens+and+induction+of+antibodies.">Diversity of Helicobacter pylori in expression of antigens and induction of antibodies.</a> World J. Gastroenterol. 14 (30), 4816-4822 (2008).</li><li>Long, M., Luo, J., Li, Y., Zeng, F. Y., Li, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Detection+and+evaluation+of+antibodies+against+neutrophil-activating+protein+of+Helicobacter+pylori+in+patients+with+gastric+cancer.">Detection and evaluation of antibodies against neutrophil-activating protein of Helicobacter pylori in patients with gastric cancer.</a> World J. Gastroenterol. 15 (19), 2381-2388 (2009).</li><li>Song, H., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+CagA-independent+cluster+of+antigens+related+to+the+risk+of+noncardia+gastric+cancer:+associations+between+Helicobacter+pylori+and+gastric+adenocarcinoma+explored+by+multiplex+serology.">A CagA-independent cluster of antigens related to the risk of noncardia gastric cancer: associations between Helicobacter pylori and gastric adenocarcinoma explored by multiplex serology.</a> Int. J. Cancer. 134 (12), 2942-2950 (2014).</li><li>Kottakis, F., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Helicobacter+pylori+neutrophil-activating+protein+activates+neutrophils+by+its+C-terminal+region+even+without+dodecamer+formation,+which+is+a+prerequisite+for+DNA+protection--novel+approaches+against+Helicobacter+pylori+inflammation.">Helicobacter pylori neutrophil-activating protein activates neutrophils by its C-terminal region even without dodecamer formation, which is a prerequisite for DNA protection--novel approaches against Helicobacter pylori inflammation.</a> FEBS J. 275 (2), 302-317 (2008).</li><li>Thoreson, A. C., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Differences+in+surface-exposed+antigen+expression+between+Helicobacter+pylori+isolated+from+duodenal+ulcer+patients+and+from+asymptomatic+subjects.">Differences in surface-exposed antigen expression between Helicobacter pylori isolated from duodenal ulcer patients and from asymptomatic subjects.</a> J. Clin. Microbiol. 38 (9), 3436-3441 (2000).</li><li>Wang, C. A., Liu, Y. C., Du, S. Y., Lin, C. W., Fu, H. W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Helicobacter+pylori+neutrophil-activating+protein+promotes+myeloperoxidase+release+from+human+neutrophils.">Helicobacter pylori neutrophil-activating protein promotes myeloperoxidase release from human neutrophils.</a> Biochem. Biophys. Res. Commun. 377 (1), 52-56 (2008).</li><li>Iyer, G., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Reduced+surface+area+chromatography+for+flow-through+purification+of+viruses+and+virus+like+particles.">Reduced surface area chromatography for flow-through purification of viruses and virus like particles.</a> J. Chromatogr. A. 1218 (26), 3973-3981 (2011).</li><li>Wongchuphan, R., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Purification+of+rabbit+polyclonal+immunoglobulin+G+using+anion+exchangers.">Purification of rabbit polyclonal immunoglobulin G using anion exchangers.</a> Process Biochem. 46 (1), 101-107 (2011).</li><li>Lu, X., Zhao, D., Su, Z. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Purification+of+hemoglobin+by+ion+exchange+chromatography+in+flow-through+mode+with+PEG+as+an+escort.">Purification of hemoglobin by ion exchange chromatography in flow-through mode with PEG as an escort.</a> Artif. Cells Blood Substit. Immobil. Biotechnol. 32 (2), 209-227 (2004).</li><li>Brooks, S. P., Storey, K. B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Purification+and+characterization+of+a+protein+phosphatase+that+dephosphorylates+pyruvate+kinase+in+an+anoxia+tolerant+animal.">Purification and characterization of a protein phosphatase that dephosphorylates pyruvate kinase in an anoxia tolerant animal.</a> Biochem. Mol. Biol. Int. 38 (6), 1223-1234 (1996).</li><li>Gewirtz, A. T., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Salmonella+typhimurium+translocates+flagellin+across+intestinal+epithelia,+inducing+a+proinflammatory+response.">Salmonella typhimurium translocates flagellin across intestinal epithelia, inducing a proinflammatory response.</a> J. Clin. Invest. 107 (1), 99-109 (2001).</li><li>Levison, P. R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Large-scale+ion-exchange+column+chromatography+of+proteins:+Comparison+of+different+formats.">Large-scale ion-exchange column chromatography of proteins: Comparison of different formats.</a> J. Chromatogr. B Analyt. Technol. Biomed. Life Sci. 790 (1-2), 17-33 (2003).</li><li>Lee, M. F. X., Chan, E. S., Tey, B. T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Negative+chromatography:+Progress,+applications+and+future+perspectives.">Negative chromatography: Progress, applications and future perspectives.</a> Process Biochem. 49 (6), 1005-1011 (2014).</li><li>Yang, Y. C., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=High+yield+purification+of+Helicobacter+pylori+neutrophil-activating+protein+overexpressed+in+Escherichia+coli.">High yield purification of Helicobacter pylori neutrophil-activating protein overexpressed in Escherichia coli.</a> BMC biotechnol. 15 (23), (2015).</li><li>Iankov, I. D., Haralambieva, I. H., Galanis, E. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Immunogenicity+of+attenuated+measles+virus+engineered+to+express+Helicobacter+pylori+neutrophil-activating+protein.">Immunogenicity of attenuated measles virus engineered to express Helicobacter pylori neutrophil-activating protein.</a> Vaccine. 29 (8), 1710-1720 (2011).</li><li>Shih, K. S., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=One-step+chromatographic+purification+of+Helicobacter+pylori+protein+expressed+in+Bacillus+subtilis.">One-step chromatographic purification of Helicobacter pylori protein expressed in Bacillus subtilis.</a> PLoS One. 8 (4), e60786 (2013).</li><li>Liu, H., Naismith, J. H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=An+efficient+one-step+site-directed+deletion,+insertion,+single+and+multiple-site+plasmid+mutagenesis+protocol.">An efficient one-step site-directed deletion, insertion, single and multiple-site plasmid mutagenesis protocol.</a> BMC biotechnol. 8 (91), (2008).</li><li>Karnik, A., Karnik, R., Grefen, C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=SDM-assist+software+to+design+site-directed+mutagenesis+primers+introducing+'silent'+restriction+sites.">SDM-assist software to design site-directed mutagenesis primers introducing 'silent' restriction sites.</a> BMC bioinformatics. 14 (105), (2013).</li></ol>

De negatieve modus batch chromatografie met DEAE anionenwisselaarharsen hier gepresenteerde is geschikt voor zuivering van recombinant HP-NAP overexpressie gebracht in E. coli. De pH van de buffers die in de stappen van cellysis en zuivering zeer kritisch om de oplosbaarheid van HP-NAP in E. waarborgen coli lysaten en efficiënte scheiding van recombinant HP-NAP van gastheercel onzuiverheden, respectievelijk. Bacteriële cellen worden gelyseerd bij pH 9,0, en de negatieve zuivering worden uitg...

Helicobacter pylori (H. pylori) is een belangrijke oorzaak van gastritis en maagzweren. Deze bacterie is ook geclassificeerd als een kankerverwekkende stof bij de mens door het Internationaal Agentschap voor Kankeronderzoek, onderdeel van de World Health Organization, in 1994. Er wordt geschat dat de prevalentie van H. pylori infectie 70% in de ontwikkelingslanden en 30-40% in de geïndustrialiseerde landen 1. Hoewel de infectie tarief van H. pylori afneemt in de geïndustrialiseerde landen, de infectie tarief van H. pylori in de ontwikkelingslanden een hoog 2. De standaard behandeling om H. uit te roeien pylori-infectie bestaat uit de toediening van een protonpompremmer, PPI, en twee antibiotica, claritromycine plus amoxicilline of metronidazol 3. Echter, de opkomst van de antibioticaresistentie in H. pylori gerelateerde zweren therapie dringt er bij de ontwikkeling van nieuwe strategieën ter voorkoming van or genezen van de infectie. Ontwikkeling van preventieve en / of therapeutische vaccinatie tegen H. pylori kan een alternatieve benadering H. beheersen pylori-infectie. Helicobacter pylori-neutrofiel activerend eiwit (HP-NAP), een belangrijke virulentie factor H pylori, werd voor het eerst geïdentificeerd in water extracten van H. pylori met het vermogen om neutrofielen te activeren om zich te houden aan endotheelcellen en produceren van reactieve zuurstofsoorten (ROS) 4. Neutrofiel infiltratie van het maagslijmvlies in H. pylori geïnfecteerde patiënten met actieve gastritis kan leiden tot ontsteking en weefselbeschadiging van de maag. Zo kan HP-NAP een pathologische rol spelen door het activeren van neutrofielen aan maagontsteking, die verder veroorzaakt maagzweer of H. induceren pylori-geassocieerde gastrische aandoeningen. Toch HP-NAP is een potentiële kandidaat voor klinische toepassingen 5,6. Door de immunogene en immunomodulerende progenschappen van HP-NAP, kan dit eiwit worden gebruikt om vaccins, therapeutische middelen en diagnostische instrumenten te ontwikkelen. Een klinisch onderzoek werd uitgevoerd voor het gebruik van recombinant HP-NAP als een van de bestanddelen van een eiwit vaccin tegen H. pylori. Dit vaccin bestaat uit recombinant HP-NAP, cytotoxine-geassocieerde gen A (CagA) en vacuolating A cytotoxine (VacA) proteïnen geformuleerd met aluminiumhydroxide en is verder aangetoond veilig en immunogeen bij mensen 7 te zijn. Ook HP-NAP werkt als een krachtige immunomodulator triggert T helper type 1 (Th1) -polarized immuunresponsen voor kankertherapie 8 en omlaag reguleren Th2-gemedieerde immuunresponsen opgewekt door allergische reacties en parasitaire infecties 9,10. Zoals voor diagnostiek, heeft recombinant HP-NAP-gebaseerde ELISA werd toegepast op serum antilichamen tegen HP-NAP in H. pylori geïnfecteerde patiënten 11. Een studie toonde aan dat het niveau van HP-NAP-specifieke antilichamen in sera van H. pylori geïnfecteerde patiënten met maagkanker significant hoger dan die van patiënten met chronische gastritis 12. Een andere studie toonde ook aan dat serum antilichamen tegen HP-NAP zijn geassocieerd met de aanwezigheid van niet-cardia adenocarcinoom van de maag 13. Aldus kan recombinant HP-NAP-gebaseerde ELISA toegepast om antilichamen in serum tegen HP-NAP detecteren prognose maagkanker H. pylori geïnfecteerde patiënten. Samen genomen, kon het gezuiverde HP-NAP verder worden gebruikt voor de preventie, behandeling en prognose van H. pylori-geassocieerde ziekten en kanker. Onder de verschillende methoden voor zuivering van recombinant HP-NAP expressie gebracht in Escherichia coli (E. coli) in de natieve vorm gemeld tot nu toe, een tweede zuiveringsstap waarbij gelfiltratiechromatografie nodig om zeer zuivere HP-NAP 14-16 vinden . Hier, een methode waarbij negatieve modus batch chromatografie metdiethylaminoethyl (DEAE) ionenwisselaarharsen beschreven voor zuivering van HP-NAP overexpressie gebracht in E. coli met hoge opbrengst en een hoge zuiverheid. Deze zuiveringstechniek is gebaseerd op de binding van eiwitten van de gastheercel en / of dan HP-NAP aan de hars verontreinigingen. Bij pH 8,0, zijn bijna geen andere eiwitten, behalve HP-NAP hersteld van de ongebonden fractie. Deze zuivering benadering met behulp van DEAE ion-uitwisselingschromatografie negatief mode is eenvoudig en tijdsbesparend, doordat zuivering van recombinant HP-NAP via one-step chromatografie door middel van het verzamelen van de ongebonden fractie. Naast HP-NAP, verscheidene andere biomoleculen, zoals virussen 17, Immunoglobuline G (IgG) 18, hemoglobine 19, proteïne fosfatase 20 en virulentiefactor flagellin 21, zijn ook gerapporteerd te worden gezuiverd door ion-uitwisselingschromatografie negatief modus. De negatieve modus voorkeur ionenwisselingschromatografie als verontreinigingen de minorcomponenten aanwezig in het monster onderworpen te zuiveren 22. De toepassing van de negatieve chromatografie in zuivering van natuurlijke of recombinante biomoleculen is onlangs beoordeeld 23. Het voorliggende rapport geeft een stap voor stap protocol voor de expressie van recombinant HP-NAP in E. coli, lysis van cellen en zuivering van HP-NAP middels negatieve modus batch chromatografie met DEAE ionenwisselaarharsen. Indien een eiwit gewenst voor zuivering geschikt voor ionenuitwisselingschromatografie als negatief, kunnen de beschreven protocol worden aangepast als uitgangspunt voor de ontwikkeling van een zuiveringswerkwijze.

<table border="1" fo:keep-together.within-page="1" fo:keep-with-next.within-page="always">
	<tbody>
		<tr>
			<td>Material</td>
			<td></td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>pET42a-NAP&#160;</td>
			<td>N/A</td>
			<td>N/A</td>
			<td>prepared as described in Supplementary data of Refernce 15&#160; 
			http://www.sciencedirect.com/science/article/pii/S0006291X08018317</td>
		</tr>
		<tr>
			<td>E. coli BL21 (DE3)</td>
			<td>Thermo Fisher Scientific Inc</td>
			<td>C6000-03</td>
			<td>https://www.thermofisher.com/order/catalog/product/C600003</td>
		</tr>
		<tr>
			<td>Kanamycin</td>
			<td>Amresco</td>
			<td>25389-94-0</td>
			<td>http://www.amresco-inc.com/KANAMYCIN-SULFATE-0408.cmsx</td>
		</tr>
		<tr>
			<td>Isopropyl &#946;-D-1-thiogalactopyranoside (IPTG)</td>
			<td>MD Biomedical Inc</td>
			<td>101-367-93-1</td>
			<td>http://www.antibody-antibodies.com/product_det.php?id=238064&#38;supplier=search&#38;name =IPTG%20</td>
		</tr>
		<tr>
			<td>phenylmethylsulfonyl fluoride (PMSF)</td>
			<td>Sigma-Aldrich</td>
			<td>10837091001</td>
			<td>protease inhibitor 
			http://www.sigmaaldrich.com/catalog/product/roche/PMSFRO?lang=en&#38;region=TW</td>
		</tr>
		<tr>
			<td>N-alpha-tosyl-L-lysinyl-chloromethylketone (TLCK)</td>
			<td>Sigma-Aldrich</td>
			<td>T7254</td>
			<td>protease inhibitor 
			http://www.sigmaaldrich.com/catalog/product/sigma/t7254?lang=en&#38;region=TW</td>
		</tr>
		<tr>
			<td>N-tosyl-L-phenylalaninyl-chloromethylketone (TPCK)</td>
			<td>Sigma-Aldrich</td>
			<td>T4376</td>
			<td>protease inhibitor 
			http://www.sigmaaldrich.com/catalog/product/sigma/t4376?lang=en&#38;region=TW</td>
		</tr>
		<tr>
			<td>Bio-Rad protein assay dye reagent concentrate</td>
			<td>Bio&#8208;Rad</td>
			<td>500-0006</td>
			<td>for protein quantitation 
			http://www.bio-rad.com/en-us/sku/5000006-bio-rad-protein-assay-dye-reagent-concentrate</td>
		</tr>
		<tr>
			<td>Protein standard (bovine serum albumin)</td>
			<td>Sigma-Aldrich</td>
			<td>P5619&#160;</td>
			<td>a standard protein for Bio-Rad Protein Assay 
			http://www.sigmaaldrich.com/catalog/product/fluka/p5619?lang=en&#38;region=TW</td>
		</tr>
		<tr>
			<td>DEAE&#8211;Sephadex &#160;A-25 chloride form</td>
			<td>Sigma-Aldrich</td>
			<td>A25120</td>
			<td>http://www.sigmaaldrich.com/catalog/product/sigma/a25120?lang=en&#38;region=TW</td>
		</tr>
		<tr>
			<td>Spectrum/Por dialysis tubing</td>
			<td>Spectrum Laboratories</td>
			<td>132720</td>
			<td>with molecular weight cutoff of 14 kDa 
			http://www.spectrumlabs.com/dialysis/RCtubing.html?Pn=132720;</td>
		</tr>
		<tr>
			<td>Acrodisc&#174; units with Mustang&#174; E membrane</td>
			<td>Pall</td>
			<td>MSTG25E3</td>
			<td>for endotoxin removal; operated at flow rates ranging from 1 to 4 ml/min 
			http://www.pall.com/main/laboratory/product.page?id=19992</td>
		</tr>
		<tr>
			<td>mouse monoclonal antibody MAb 16F4</td>
			<td>N/A</td>
			<td>N/A</td>
			<td>raised against the purified HP-NAP of H. pylori strain NCTC 11637 as described in Refernce 23;&#160; A gift from Drs. Evanthia Galanis and Ianko D. Iankov at Mayo Clinic, USA 
			http://www.sciencedirect.com/science/article/pii/S0264410X10017585</td>
		</tr>
		<tr>
			<td>HiLoad 16/600 Superdex 200 pg</td>
			<td>GE Healthcare Life Sciences</td>
			<td>28989335</td>
			<td>for gel filtration chromatography 
			http://www.gelifesciences.com/webapp/wcs/stores/servlet/productById/en/GELifeSciences-tw/28989335</td>
		</tr>
		<tr>
			<td>PlusOne silver staining kit, protein</td>
			<td>GE Healthcare Life Sciences</td>
			<td>17-1150-01</td>
			<td>http://www.gelifesciences.com/webapp/wcs/stores/servlet/productById/en/GELifeSciences-tw/17115001</td>
		</tr>
		<tr>
			<td>Ficoll-Paque PLUS</td>
			<td>GE Healthcare Life Sciences</td>
			<td>17-1440-02</td>
			<td>for density gradient centrifugation to purify human neutrophils 
			http://www.gelifesciences.com/webapp/wcs/stores/servlet/catalog/en/GELifeSciences-tw/products/AlternativeProductStructure _16963/17144002</td>
		</tr>
		<tr>
			<td>Flat bottom 96-well white plate</td>
			<td>Thermo Fisher Scientific Inc</td>
			<td>236108</td>
			<td>http://www.thermoscientific.com/en/product/nunc-f96-microwell-black-white-polystyrene-plate.html</td>
		</tr>
		<tr>
			<td>Luminol</td>
			<td>Sigma-Aldrich</td>
			<td>A8511</td>
			<td>protected from light 
			http://www.sigmaaldrich.com/catalog/product/sigma/a8511?lang=en&#38;region=TW</td>
		</tr>
		<tr>
			<td>Expand &#160;long template PCR system</td>
			<td>Sigma-Aldrich</td>
			<td>11681834001</td>
			<td>source of High Fidelity PCR enzyme mix 
			http://www.sigmaaldrich.com/catalog/product/roche/elongro?lang=en&#38;region=TW</td>
		</tr>
		<tr>
			<td>Dpn I</td>
			<td>New England Biolabs</td>
			<td>R0176S</td>
			<td>https://www.neb.com/products/r0176-dpni</td>
		</tr>
		<tr>
			<td>Xho I</td>
			<td>New England Biolabs</td>
			<td>R0146S</td>
			<td>https://www.neb.com/products/r0146-xhoi</td>
		</tr>
		<tr>
			<td>E. coli DH5&#945;</td>
			<td>Thermo Fisher Scientific Inc</td>
			<td>18265-017</td>
			<td>https://www.thermofisher.com/order/catalog/product/18265017</td>
		</tr>
		<tr>
			<td>Name</td>
			<td>Company</td>
			<td>Product Number</td>
			<td>Comments</td>
		</tr>
		<tr>
			<td>Equipment</td>
			<td></td>
			<td></td>
			<td> 
			&#160;</td>
		</tr>
		<tr>
			<td>U-2800 double beam UV/VIS spectrophotometer</td>
			<td>Hitachi&#160;</td>
			<td>N/A</td>
			<td>out of market and upgraded to a new model 
			http://hitachi-hta.com/products/life-sciences-chemical-analysis/uvvisible-spectrophotometers</td>
		</tr>
		<tr>
			<td>EmulsiFlex-C3 high pressure homogenizer</td>
			<td>Avestin Inc</td>
			<td>C315320</td>
			<td>http://www.avestin.com/English/c3page.html</td>
		</tr>
		<tr>
			<td>Hitachi Koki himac CP80WX general ultracentrifuge</td>
			<td>Hitachi Koki Co</td>
			<td>90106401</td>
			<td>for separation of the soluble and insoluble protein fractions from E. coli lysates 
			http://centrifuges.hitachi-koki.com/products/ultra/cp_wx/cp_wx.html</td>
		</tr>
		<tr>
			<td>&#196;KTA FPLC</td>
			<td>GE Healthcare Life Sciences</td>
			<td>18-1900-26</td>
			<td>for gel filtration chromatography 
			http://www.gelifesciences.com/webapp/wcs/stores/servlet/productById/en/GELifeSciences-tw/18190026</td>
		</tr>
		<tr>
			<td>Aviv model 62ADS CD spectrophotometer</td>
			<td>Aviv Biomedical</td>
			<td>N/A</td>
			<td>out of market and upgraded to a new model 
			http://www.avivbiomedical.com/circular.php</td>
		</tr>
		<tr>
			<td>LAS-3000 imaging system</td>
			<td>Fujifilm</td>
			<td>N/A</td>
			<td>discontinued and replaced 
			http://www.gelifesciences.com/webapp/wcs/stores/servlet/productById/en/GELifeSciences-tw/28955810</td>
		</tr>
		<tr>
			<td>Wallac 1420 (Victor2) multilabel counter</td>
			<td>Perkin-Elmer</td>
			<td>1420-018</td>
			<td>for chemiluminescence detection 
			http://www.perkinelmer.com/catalog/product/id/1420-018</td>
		</tr>
	</tbody>
</table>

one-step negative chromatographic purification of helicobacter pylori neutrophil-activating protein overexpressed in escherichia coli in batch mode

Helicobacter pylori-neutrofiel activerend eiwit (HP-NAP) is een belangrijke virulentiefactor Helicobacter pylori (H. pylori). Het speelt een cruciale rol in H. pylori geïnduceerde maagontsteking door activering van verschillende aangeboren leukocyten zoals neutrofielen, monocyten en mestcellen. De immunogeen is en immunomodulerende eigenschappen van HP-NAP maken het een potentiële diagnostische en kandidaat-vaccin voor H. pylori en een nieuw kandidaat-geneesmiddel voor de behandeling van kanker. Om grote hoeveelheden gezuiverde HP-NAP voor de klinische toepassingen te verkrijgen, een efficiënte werkwijze voor het zuiveren van dit eiwit met hoge opbrengst en zuiverheid tot stand worden gebracht. In dit protocol beschrijven we een werkwijze voor eenstaps negatieve chromatografische zuivering van recombinant HP-NAP overexpressie gebracht in Escherichia coli (E. coli) met behulp diethylaminoethyl (DEAE) ionenwisselaarharsen (bijv. Sephadex) in batch mode. Recombinant HP-NAP vormt bijna 70% van het totale eiwit in E. coli en bijna volledig hersteld in de oplosbare fractie na cellyse bij pH 9,0. Bij de optimale conditie bij pH 8,0, wordt het merendeel van HP-NAP gewonnen in de ongebonden fractie terwijl de endogene eiwitten van E. coli worden efficiënt verwijderd door de hars. Deze zuiveringsmethode met behulp van negatieve modus batch chromatografie met DEAE ionenwisselaars levert functionele HP-NAP uit E. coli in de natieve vorm met hoge opbrengst en zuiverheid. Het gezuiverde HP-NAP kan verder worden gebruikt voor de preventie, behandeling en prognose van H. pylori-geassocieerde ziekten en kanker.

Het schema van de experimentele procedure negatieve zuivering van recombinant HP-NAP expressie in E. coli door DEAE ionenuitwisselingsharsen in batchmodus is getoond in figuur 1. Deze zuiveringstechniek is gebaseerd op de binding van eiwitten van de gastheercel en / of dan HP-NAP aan de hars verontreinigingen. Bij pH 8,0, zijn bijna geen andere eiwitten behalve HP-NAP in zijn natieve vorm gewonnen uit de ongebonden fractie (figuur 2A en ...

Watch this Scientific Journal Video about One-step Negative Chromatographic Purification of Helicobacter pylori Neutrophil-activating Protein Overexpressed in Escherichia coli in Batch Mode at JoVE.co

One-step Negative Chromatographic Purification of Helicobacter pylori Neutrophil-activating Protein Overexpressed in Escherichia coli in Batch Mode

Een hoge opbrengst Werkwijze voor eenstaps negatieve zuivering van recombinant Helicobacter pylori-neutrofiel activerend eiwit (HP-NAP) tot overexpressie gebracht in Escherichia coli door diethylaminoethyl harsen batchmodus is beschreven. HP-NAP gezuiverd met deze methode is gunstig voor de ontwikkeling van vaccins, geneesmiddelen of diagnostica voor H. pylori-geassocieerde ziekten.

Een stap Negatieve Chromatografische zuivering van<em&gt; Helicobacter pylori</em&gt; Neutrofiel-activerend eiwit overexpressie in<em&gt; Escherichia coli</em&gt; In Batchmodus

Helicobacter pylori neutrophil-activating protein (HP-NAP) is a major virulence factor of Helicobacter pylori (H. pylori). It plays a critical role in H. ...

The overall goal of this purification is to yield functional Helicobacter pylori Neutrophil-activating protein or HP-NAP in its native form with high purity and high yield using negative mode batch chromatography with di-ethyl amino-ethyl ion exchange resin. The main advantage of this technique is that HP-NAP can be purified in its native form in one step with high purity and high yield. Negative purification of HP-NAP starts with a batch binding procedure in which the soluble protein fraction from bacterial lysates is added to DEAE resin.The mixture is incubated to allow wholesale proteins to bind to the resin. HP-NAP present in the unbound fraction is then obtained by centrifugation of gravity flow. The implications of this technique is 10:1 prevention treatment and prognostic of Helicobacter pylori associated diseases as well as cancer therapy.Because of the immunogenic and immunomodulatory properties of HP-NAP. Generally, individuals new to this method will struggle. Because HP-NAP easily aggregates during the sterilization.Demonstrating the procedure will be Zhi-Wei Hong, a graduate student from our lab. Working at four degrees Celsius, we suspend 50 milliliters of the cell palate prepared as described in the text protocol in 20 milliliters of low salt, tris-buffer at pH 9.0 with protease inhibitor mixture. It's critical to keep sample at the four degrees Celsius to allow the procedure to prevent the protein aggregation.Disrupt the bacterial cells by passing the bacterial suspension through a high-pressure homogenizer operated at a range of 15, 000 to 20, 000 PSI for seven times at four degrees Celsius. After lysates baterializes, it should be centrifuged immediately. Transfer homogenized samples to a centrifuge tube.Immediately centrifuge the cell-lysate at 30, 000 times G at four degrees Celsius for one hour to separate the soluble and insoluble protein fractions by using an ultra-centrifuge. Following centrifugation, transfer the supernatant as the soluble protein fraction to a beaker. Measure the protein concentration of the soluble protein fraction by the Bradford method using a commercial kit with bovine serum albumin as the standard according to the manufacturer's instructions.Then add 177.6 microliters of one normal HCl into 20 milliliters of the soluble protein fraction to adjust its pH value from pH 9.0 to pH 8.0. Add 20 millimeter Tris-HCl, pH 8.0, 50 milliliter sodium chloride to the protein solution to result in a final protein concentration of 0.5 milligrams per milliliter. To prepare 15 milliliters of DEAE resin, suspend 0.6 grams of DEAE resin dry powder in 30 milliliters of Tris-HCl buffer at room temperature for at least one day.Centrifuge the resin at 10, 000 times G at four degrees Celsius for one minute and then remove and discard the supernatant. Then add 15 milliliters of Tris-HCl buffer. After repeating the centrifugation resuspension steps four more times, store the 15 milliliters of settled resin at four degrees Celsius for subsequent use.Working at four degrees Celsius, add 45 milliliters of the prepared soluble proteins to milliliters of the resin and transfer to a 100 milliliter beaker with stir bar. Stir the protein resin slurry using a stir plate at four degrees Celsius for one hour. Next, pour the protein resin slurry into a plastic or a glass column fitted with a stopcock and allow the resin to settle under gravity.Open the stopcock to allow the protein solution to run through the column by gravity flow until the liquid level in the column is just above the resin. Collect the flow through as the unbound fraction which contains the purified neutrophil-activating protein. Add 15 milliliters of the ice-cold Tris-HCl buffer into the column.Open the stopcock again to allow the wash buffer to run through the column by gravity flow until the liquid level in the column is just above the resin. Collect the flow through as the wash fraction. Repeat washing with ice-cold buffer four more times to collect the additional wash fractions.Then add 15 milliliters of ice-cold 20 millimeter Tris-HCl pH 8.0, one molar sodium chloride into the column. Collect the flow through as the elution fractions as before. Repeat the elution steps four more times to collect the additional elution fractions.The effect of pH on solubility of HP-NAP in E.coli lysate are shown here. The amount of HP-NAP detected in this soluble fraction was markedly increased at pH 7.5 to 9.5. Recombinant HP-NAP was almost fully recovered in the soluble fraction upon cell lysis at pH 9.0.Here, the effect of pH on negative purification of recombinant HP-NAP expressed in E.coli by DEAE resins in batch mode are shown. At pH 8.0, only a little amount of HP-NAP was present in the elution fraction. The amount of HP-NAP present in the unbound fractions was the highest at pH 8.0.The optimized amount of proteins loaded onto the DEAE resin is 1.5 milligrams of protein per milliliter of resin for achieving maximum capacity of the resin to absorb the impurities from E.coli. At pH 8.0, very few proteins other than HP-NAP in its native form are recovered in the unbound fraction using DEAE resins in batch mode. The purity of HP-NAP was higher than 95 percent.The purified HP-NAP folds into a multimer with a secondary structure of alpha-helix as revealed by the gelifiltration chromotogram and the far UV circular dichroism spectrum. A luminal dependent chemiluminescence assay reveals that the purified HP-NAP is able to trigger the production of reactive oxygen species by neutrophiles. Once mastered, these techniques can be done within five hours if it is performed properly.After watching this video you should have a good understanding of how to purify functional HP-NAP in its native form with high yield and purity using negative mode batch chromotography with DEAE and exchange resin. While attempting this procedure, it's important to remember to use buffers at the appropriate pH in the step of sterilizes in the batch chromotography. We first had the idea for this method when we tried to apply other chromotographic approaches instead of filtration to purify HP-NAP in its native form.Though this method is designed to appeal by recombinant HP-NAP expressed in E.coli. It can also be applied to other bacterial expression systems such as per-sida sep-tidas. Visual demonstration of this measure is quick code.Plus the step of sterilizes and batch chromotography are difficult to learn. Because these steps must be carried out at the four degrees Celsius without any time delay. If a protein designed for purification is suitable for our exchange chromotography in negative mode, this procedure could also be adapted as a starting point for the development of purification process.After its development, this technique paved the way for researchers in the field of clinical research to explore the possibility of using HP-NAP in cancer therapy as well as the development of vaccines, drugs, and the diagnostics for Helicobacter pylori associated disease.

Research

JoVE Journal

Immunology and Infection

One-step Negative Chromatographic Purification of Helicobacter pylori Neutrophil-activating Protein Overexpressed in Escherichia coli in Batch Mode

Non-Invasive Model of Neuropathogenic Escherichia coli Infection in the Neonatal Rat

Non-Invasive Model of Neuropathogenic Escherichia coli Infection in the Neonatal Rat

Non-Invasive Model van Neuropathogenic<em&gt; Escherichia coli</em&gt; Infectie in de Neonatale Rat

Investigation of the interactions between animal host and bacterial pathogen is only meaningful if the infection model employed replicates the principal ...

High Resolution Electron Microscopy of the Helicobacter pylori Cag Type IV Secretion System Pili Produced in Varying Conditions of Iron Availability

High Resolution Electron Microscopy of the Helicobacter pylori Cag Type IV Secretion System Pili Produced in Varying Conditions of Iron Availability

Hoge Resolutie Elektronenmicroscopie van de<em&gt; Helicobacter pylori</em&gt; Cag Type IV Afscheiding System Pili Geproduceerd in wisselende omstandigheden van Iron Beschikbaarheid

Helicobacter pylori is a helical-shaped, gram negative bacterium that colonizes the human gastric niche of half of the human population1,2.  H. pylori is ...

Organoids as Model for Infectious Diseases: Culture of Human and Murine Stomach Organoids and Microinjection of Helicobacter Pylori

Organoids als model voor Infectieziekten: cultuur van de mens en muizen Maag Organoids en Micro-injectie van Helicobacter pylori

Recently infection biologists have employed stem cell derived cultures to answer the need for new and better models to study host-pathogen interactions. ...

Detection of Enterohemorrhagic Escherichia Coli Colonization in Murine Host by Non-invasive In Vivo Bioluminescence System

Detection of Enterohemorrhagic Escherichia Coli Colonization in Murine Host by Non-invasive In Vivo Bioluminescence System

Detectie van de Enterohemorrhagic Escherichia Coli kolonisatie in lymfkliertest Host door niet-invasieve In Vivo bioluminescentie systeem

Enterohemorrhagic E. coli (EHEC) O157:H7, which is a foodborne pathogen that causesdiarrhea, hemorrhagic colitis (HS), and hemolytic uremic syndrome ...

Creation of a Dense Transposon Insertion Library Using Bacterial Conjugation in Enterobacterial Strains Such As Escherichia Coli or Shigella flexneri

Creation of a Dense Transposon Insertion Library Using Bacterial Conjugation in Enterobacterial Strains Such As Escherichia Coli or Shigella flexneri

Oprichting van een dichte Transposon invoeging bibliotheek met behulp van bacteriële Woordherkomst en-opbouw in de Enterobacterial stammen zoals Escherichia Coli of Shigella flexneri

Transposon mutagenesis is a method that allows gene disruption via the random genomic insertion of a piece of DNA called a transposon. The protocol below ...

Overexpression and Purification of Human Cis-prenyltransferase in Escherichia coli

Overexpression and Purification of Human Cis-prenyltransferase in Escherichia coli

Overexpressie en zuivering van het menselijk<em&gt; Cis</em&gt; -prenyltransferase in<em&gt; Escherichia coli</em

Prenyltransferases (PT) are a group of enzymes that catalyze chain elongation of allylic diphosphate using isopentenyl diphosphate (IPP) via multiple ...

A Facile Protocol to Generate Site-Specifically Acetylated Proteins in Escherichia Coli

A Facile Protocol to Generate Site-Specifically Acetylated Proteins in Escherichia Coli

Een Facile Protocol voor het genereren van Site-Specifically geacetyleerd eiwitten in Escherichia Coli

Post-translational modifications that occur at specific positions of proteins have been shown to play important roles in a variety of cellular processes. ...

Dissecting Multi-protein Signaling Complexes by Bimolecular Complementation Affinity Purification (BiCAP)

Dissecting Multi-protein Signaling Complexes by Bimolecular Complementation Affinity Purification BiCAP

Ontleden multi signalering eiwitcomplexen door Bimolecular complementatie affiniteit zuivering (BiCAP)

The assembly of protein complexes is a central mechanism underlying the regulation of many cell signaling pathways. A major focus of biomedical research ...

Using Enhanced Green Fluorescence Protein-expressing Escherichia Coli to Assess Mouse Peritoneal Macrophage Phagocytosis

Using Enhanced Green Fluorescence Protein-expressing Escherichia Coli to Assess Mouse Peritoneal Macrophage Phagocytosis

Met behulp van verbeterde eiwit-uiting van groene fluorescentie Escherichia Coli te beoordelen muis peritoneale Macrophage fagocytose

This manuscript describes a simple and reproducible method to perform a phagocytosis assay. The first part of this method involves building a ...

Purification of a High Molecular Mass Protein in Streptococcus mutans

Purification of a High Molecular Mass Protein in Streptococcus mutans

Zuivering van een hoog molecuulmassa-eiwit in Streptococcus mutans

Elucidation of a gene&#39;s function typically involves comparison of phenotypic traits of wild-type strains and strains in which the gene of interest has ...