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).

인간의 혈액은 국립 칭화 대학의 임상 시험 심사위원회, 신주, 대만의 사전 서면 동의 및 승인을 건강한 지원자에서 수집 하였다. E.에서 재조합 HP-NAP의 1 식 대장균 <ol><li> H.에서 HP-NAP의 DNA 서열을 함유하는 플라스미드 pET42a-NAP 준비 파이로리 26695 균주는 이전 16 설명했다. 설명 된 바와 같이 원하는 포인트 돌연변이 HP-NAP의 DNA 서열을 함유하는 플라스미?...

<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>

여기서 제시 DEAE 음이온 교환 수지와 네가티브 모드 배치 크로마토 그래피 E 대장균 과발현 재조합 HP-NAP의 정제에 적합하다. 세포 용해 및 정제의 단계에서 사용 된 완충액의 pH 값은 E.에서 HP-NAP의 용해도를 보장하기 위해 매우 중요 대장균 해물 각각 숙주 세포 불순물 재조합 HP-NAP를 효율적으로 분리. 균체을 pH 9.0에 용해되어야하고, 음의 정제는 높은 수율 및 고순도 HP-NAP를 ?...

헬리코박터 파이로리 (H. pylori의)는 위염 및 소화성 궤양의 주요 원인이다. 이 박테리아는 또한 암, 세계 보건기구 (WHO)의 일부 연구에 대한 국제기구에 의해 인간 발암 물질로 분류되어, 1994 년에 그것은 추정되었음을 H.의 보급 pylori 감염은 개발 도상국의 70 %와 선진국 (1) 30 ~ 40 %이다. 비록 H.의 감염률 파이로리는 산업화 된 국가에서 H.의 감염률을 감소 개발 도상국에서 파이로리는 여전히이 높다. 표준 치료는 H.을 근절하기 pylori 감염은 프로톤 펌프 억제제, PPI, 2 개의 항생제, 클라리스로 마이신 플러스 아목시실린 또는 메트로니다졸 (3)의 관리로 구성되어 있습니다. H. 항생제 내성 그러나, 상승 파이로리는 궤양 치료 O 방지하는 새로운 전략의 개발을 촉구 - 관련R 감염을 치료. H.에 대한 예방 및 / 또는 치료 백신 개발 H. 파이로리를 제어하는 대안적인 방법을 제공 할 수있다 pylori 감염. 헬리코박터 파일로리 호중구 - 활성화 단백질 (HP-NAP), H 파일로리의 주요 독성 요인은 첫째 H.의 물 추출물에서 확인되었다 내피 세포 및 활성 산소 종 (ROS) (4)를 생성하기 위해 접착 호중구 활성화하는 능력 파이로리. H.에서 발견 된 위 점막의 호중구 침윤 pylori- 활성 위염에 감염 환자는 위장의 염증과 조직 손상 될 수 있습니다. 따라서, HP-NAP는 상기 궤양 H. 발생 위장 염증을 유도 호중구 활성화에 의해 병리학적인 역할을 할 수있다 파이로리는 위 질병을 -associated. 그럼에도 불구하고, HP-NAP 임상 응용 5,6에 대한 잠재적 인 후보입니다. 때문에 면역 원성 및 면역 프로에HP-NAP의 perties이 단백질은 백신, 치료제 및 진단 도구 개발하는데 사용될 수있다. 임상 실험은 H. 대 단백질 백신의 성분의 하나로서, 재조합 HP-NAP를 사용해 수행 한 파이로리. 이 백신은 수산화 알루미늄 제형 재조합 HP-NAP, 세포 독소 - 관련 유전자 A (cagA 유전자) 및 vacuolating 세포 독소의 A (바카) 단백질로 구성되며 상기 안전하고 인체 7 원성 것으로 입증되었다. 또한, HP-NAP는 암 치료 (8)에 대한 면역 반응을 -polarized 아래로 알레르기 반응 및 기생충 감염 9,10에 의해 유발 TH2 매개 면역 반응을 조절하는 (받은 Th1) T 도우미 타입 1을 트리거 강력한 면역 조절제 역할을합니다. 진단 같이, 재조합 HP-NAP 기반 ELISA는 H.에서 HP-NAP 대해 혈청 항체를 검출하기 위해 적용되어왔다 pylori 감염 환자 11 -infected. 한 연구는 보여 주었다 H.에서 혈청에서 HP-NAP 특정 항체의 수준 평로리는 위암 환자가 만성 위염 (12)을 가진 환자에서보다 유의하게 높았다 -infected. 또 다른 연구는 또한 HP-NAP에 대한 혈청 항체가 비 문부 위암 (13)의 존재와 연관된 것으로 나타났다. 따라서, 재조합 HP-NAP 기반 ELISA는 H.에서 위암의 예후에 대한 HP-NAP에 대한 혈청 항체를 검출하기 위해 적용 할 수있다 균은 환자 -infected. 함께 찍은, 정제 된 HP-NAP는 더욱 예방, 치료에 활용하고, H.의 예후 수 파일로리 질병뿐만 아니라 암 치료 -associated. 재조합 HP-NAP의 정화에 사용하는 여러 방법 중에서 네이티브 형태의 대장균 (대장균)에서 발현 두번째 정제 단계를 포함하는 겔 여과 크로마토 그래피는 고순도 HP-NAP 14-16 얻기 위해 필요한, 지금까지보고 . 여기서, 마이너스 모드 배치 크로마토 그래피를 사용하는 방법디 에틸 아미노 에틸 (DEAE) 이온 교환 수지는 E. 과발현 HP-NAP 정화용 설명 고 수율 및 고순도 대장균. 이러한 정제 기술은 숙주 세포 단백질 및 / 또는 수지 HP-NAP 이외의 불순물의 결합에 기초한다. pH가 8.0에서 HP-NAP를 제외하고 거의 다른 단백질이 결합되지 않은 부분에서 발견된다. 네거티브 모드에서 DEAE 이온 교환 크로마토 그래피를 사용하여이 정제 방법은 간단하고 시간 미 결합 분획의 수집을 한 단계 크로마토 재조합 HP-NAP의 정화를 허용함으로써 절약된다. (17) 면역 글로불린 G (IgG의) 18, 헤모글로빈 19 단백질 포스파타제 (20) 및 독성 인자 편모 21 바이러스와 같은, 또한 음극에 이온 교환 크로마토 그래피에 의해 정제하는 것으로보고 된 예 HP-NAP 여러 다른 생체 분자 이외에 방법. 불순물이 미량 인 경우 음의 모드는 이온 교환 크로마토 그래피 바람직대상 시료에 존재하는 구성 요소 (22)를 정제 할 수있다. 천연 또는 재조합 생체 분자의 정제에 부정적인 크로마토 그래피의 응용 프로그램은 최근에 23을 검토하고있다. 본 보고서는 E.에서 재조합 HP-NAP의 발현을위한 단계 프로토콜에 의해 단계를 제공합니다 콜라이, DEAE 이온 교환 수지와 네거티브 모드 배치 크로마토 그래피를 이용하여 HP-NAP의 세포 용해 및 정제. 정제 목적 단백질이 네거티브 모드에서 이온 교환 크로마토 그래피에 적합한 경우, 설명 된 프로토콜은 또한 정제 공정의 개발을위한 출발점으로 구성 될 수있다.

<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

헬리코박터 파이로리 호중구 - 활성화 단백질 (HP-NAP)은 헬리코박터 파이로리 (H. 파이로리)의 주요 독성 요소이다. 또한 H.에 중요한 역할을 파이로리는 호중구, 단핵구 및 비만 세포를 포함한 여러 선천성 백혈구 활성화에 의해 유도 된 위장 염증. HP-NAP의 면역 원성 및 면역 속성은 H.에 대한 잠재적 인 진단 및 백신 후보 확인 유문 및 암 치료 용 신약 후보. 임상 적 용도에 사용 그래피 HP-NAP 상당량을 얻기 위해서 효율적인 방법은 높은 수율과 순도의 단백질이 확립되어야 정제한다. 이러한 프로토콜에서는, 디 에틸 아미노 에틸 (DEAE) 이온 교환 수지를 이용하여 대장균 (E. 콜라이)에서 과발현 재조합 HP-NAP의 일 단계 제외 크로마토 그래피 정제 방법을 기술 하였다 (예., 세파 덱스)를 난n 개의 배치 모드. 재조합 HP-NAP는 E. 총 단백질의 약 70 %를 구성한다 대장균과 거의 완전히 pH를 9.0에서 세포 용해시의 가용성 분획에서 회수된다. pH가 8.0에서 최적의 조건에서, HP-NAP의 대부분은 언 바운드 분획에서 회수되는 반면, E.에서 내인성 단백질 대장균 효율적으로 수지에 의해 제거된다. DEAE 이온 교환 수지와 네거티브 모드 배치 크로마토 그래피를 사용하여이 정제 방법은 E.에서 기능적 HP-NAP를 얻을 높은 수율 및 순도의 기본 형태로 대장균. 정제 된 HP-NAP는 더욱 예방, 치료에 활용하고, H.의 예후 수 파일로리 질병뿐만 아니라 암 치료 -associated.

재조합 HP-NAP의 부정적인 정제의 실험 절차의 개략도는 E. 표현 배치 모드에서 DEAE 이온 교환 수지를 사용하여 대장균은도 1에 도시된다. 이러한 정제 기술은 숙주 세포 단백질 및 / 또는 수지 HP-NAP 이외의 불순물의 결합에 기초한다. pH가 8.0에서 네이티브 형태의 HP-NAP를 제외하고 거의 다른 단백질이 결합되지 않은 부분 (그림 2A와 <stro...

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

재조합 헬리코박터의 원스텝 제외 정제 고 수율 방법에 대하여 설명한다 배치 모드에서 디 에틸 아미노 에틸 수지를 이용하여 대장균에서 과발현 호중구 - 활성화 단백질 (HP-NAP) 파이로리. 이 방법에 의해 정제 HP-NAP는 H. 백신, 약물, 또는 진단의 발전을 위해 도움이됩니다 파이로리는 질병을 -associated.

한 단계의 부정적인 크로마토 그래피 정제<em&gt; 헬리코박터 파이로리</em&gt; 호중구 - 활성화 단백질 과발현<em&gt; 대장균</em&gt; 배치 모드에서

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

Neuropathogenic의 비 침습 모델<em&gt; 대장균</em&gt; 신생아 쥐에 감염

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

연구

면역학 및 감염병학

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

고해상도 전자 현미경<em&gt; 헬리코박터 파이로리</em철 가용성의 다양한 조건에서 생산&gt; CAG 유형 IV 분비 시스템 필리

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

감염증에 대한 모델로 Organoids : 헬리코박터 파이로리의 인간의 문화와 쥐 위장 Organoids 및 미세 주입

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

생물 발광 시스템 비-침략 적 비보에 의해 Murine 호스트에서 Enterohemorrhagic 대장균 식민지의 검출

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

밀도 Transposon 삽입 라이브러리를 사용 하 여 세균성 활용 Enterobacterial 종자와 같은 대장균 또는 Shigella flexneri 의 창조

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

인간의 과발현과 정제<em&gt; 시스</em&gt; - 프레 닐 트랜스퍼 라제<em&gt; 대장균</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

Site-Specifically 생성 하는 손쉬운 프로토콜 Acetylated 대장균 에서 단백질

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

해 다중 단백질 신호 복합물 분자 보완성 친 화력 정화 (BiCAP)에 의해

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

녹색 형광 단백질 표현 하는 향상 된 사용 하 여 대장균 마우스 복 막 대 식 세포 식 균 작용을 평가 하기 위해

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

연쇄상 구균 뮤탄에서 높은 분자 질량 단백질의 정화

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 ...