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A novel Escherichia coli lipid A mutant that produces an antiinflammatory lipopolysaccharide.
Open accessAbstract
A unique screen was used to identify mutations in Escherichia coli lipid A biosynthesis that result in a decreased ability to stimulate E-selectin expression by human endothelial cells. A mutation was identified in the msbB gene of E. coli that resulted in lipopolysaccharide (LPS) that lacks the myristoyl fatty acid moiety of the lipid A. Unlike all previously reported lipid A mutants, the msbB mutant was not conditionally lethal for growth. Viable cells or purified LPS from an msbB mutant had a 1000-10,000-fold reduction in the ability to stimulate E-selectin production by human endothelial cells and TNF alpha production by adherent monocytes. The cloned msbB gene was able to functionally complement the msbB mutant, restoring both the LPS to its native composition and the ability of the strain to stimulate immune cells. Nonmyristoylated LPS acted as an antagonist for E-selectin expression when mixed with LPS obtained from the parental strain. These studies demonstrate a significant role for the myristate component of LPS in immune cell activation and antagonism. In addition, the msbB mutant allowed us to directly examine the crucial role that the lipid A structure plays when viable bacteria are presented to host defense cells.
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“In humans, hexa-acylated LPS potently activates TLR4 and host immunity, whereas hypo-acylated penta- and tetra-acylated LPS poorly activate TLR4 and can antagonize immune activation by hexa-acylated LPS6–9.”
From Gut microbiota-derived hexa-acylated lipopolysaccharides enhance cancer immunotherapy responses (2025) · cites this paper as [7]
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Citations
Cites
Molecular Cloning: A Laboratory Manual
Sambrook, J., Fritsch, E., & Maniatis, T. (1989) · UCLA - Biblioteca de Ciencias de la Salud · Cited by 133,589
Molecular cloning: A laboratory manual
Deininger, P. L. (1990) · Analytical Biochemistry · doi:10.1016/0003-2697(90)90595-z · Cited by 84,684
Yanisch-Perron, C., Vieira, J., & Messing, J. W. (1985) · Gene · doi:10.1016/0378-1119(85)90120-9 · Cited by 14,909
CD14, a Receptor for Complexes of Lipopolysaccharide (LPS) and LPS Binding Protein
Wright, S. D., Ramos, R., Tobias, P. S., Ulevitch, R. J., & Mathison, J. C. (1990) · Science · doi:10.1126/science.1698311 · Cited by 3,996
[10] Assay of inorganic phosphate, total phosphate and phosphatases
Ames, B. N. (1966) · Methods in enzymology on CD-ROM/Methods in enzymology · doi:10.1016/0076-6879(66)08014-5 · Cited by 3,338
Westphal, O. (1965) · Medical Entomology and Zoology · Cited by 2,533
Identification of a protein required for disulfide bond formation in vivo.
Bardwell, J., McGovern, K., & Beckwith, J. (1991) · Cell · doi:10.1016/0092-8674(91)90532-4 · Cited by 961
Pugin, J., Schürer-Maly, C., Leturcq, D., Moriarty, A., Ulevitch, R., & Tobias, P. (1993) · Proceedings of the National Academy of Sciences of the United States of America · doi:10.1073/pnas.90.7.2744 · Cited by 901
Soluble CD14 participates in the response of cells to lipopolysaccharide.
Frey, E. A., Miller, D. S., Jahr, T. G., Sundan, A., Bažil, V., Espevik, T., Finlay, B. B., & Wright, S. D. (1992) · The Journal of Experimental Medicine · doi:10.1084/jem.176.6.1665 · Cited by 682
A restriction enzyme cleavage map of Tn5 and location of a region encoding neomycin resistance
Jorgensen, R. A., Rothstein, S. J., & Reznikoff, W. S. (1979) · Molecular and General Genetics MGG · doi:10.1007/bf00267254 · Cited by 577
Research works printed but not linked: 1
- Takada, H., and S. Kotani. 1992. Structure-function relationships of lipid A. In Bacterial endotoxic lipopolysaccharides. Volume I. Molecular Biochemis- try and Cellular Biology. D. C. Morrison and J. L. Ryan, editors. CRC Press, Boca Raton, FL. 107-130.
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Self-citationEscherichia coli Mutants That Synthesize Dephosphorylated Lipid A Molecules
Ingram, B. O., Masoudi, A., & Raetz, C. R. H. (2010) · Biochemistry · doi:10.1021/bi101253s · Cited by 21
Erova, T. E., Kirtley, M. L., Fitts, E. C., Ponnusamy, D., Baze, W. B., Andersson, J. A., Cong, Y., Tiner, B. L., Sha, J., & Chopra, A. K. (2016) · Frontiers in Cellular and Infection Microbiology · doi:10.3389/fcimb.2016.00148 · Cited by 21
Sengyee, S., Yoon, S. H., Paksanont, S., Yimthin, T., Wuthiekanun, V., Limmathurotsakul, D., West, T. E., Ernst, R. K., & Chantratita, N. (2018) · PLoS neglected tropical diseases · doi:10.1371/journal.pntd.0006287 · Cited by 21
Post, D. M. B., Ketterer, M. R., Phillips, N. J., Gibson, B. W., & Apicella, M. A. (2003) · Infection and Immunity · doi:10.1128/iai.71.2.647-655.2003 · Cited by 21
White, J. E., & Tsan, M. (2001) · American Journal of Respiratory Cell and Molecular Biology · doi:10.1165/ajrcmb.24.2.4169 · Cited by 20
Thapa, H. B., Kohl, P., Zingl, F. G., Fleischhacker, D., Wolinski, H., Kufer, T. A., & Schild, S. (2023) · Microbiology Spectrum · doi:10.1128/spectrum.01115-23 · Cited by 19
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Sun, W., Six, D. A., Reynolds, C. M., Chung, H. S., Raetz, C. R. H., & Curtiss, R. (2013) · Infection and Immunity · doi:10.1128/iai.01403-12 · Cited by 19
Schulz, A., Chuquimia, O. D., Antypas, H., Steiner, S. E., Sandoval, R. M., Tanner, G. A., Molitoris, B. A., Richter‐Dahlfors, A., & Melican, K. (2018) · Pathogens and Disease · doi:10.1093/femspd/fty087 · Cited by 18
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Kalupahana, R. S., Emilianus, A. R., Maskell, D. J., & Blacklaws, B. (2003) · Infection and Immunity · doi:10.1128/iai.71.11.6132-6140.2003 · Cited by 18
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Darveau, R. P. (1999) · Nature Biotechnology · doi:10.1038/5188 · Cited by 18
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Scholzen, T. E., & Gerdes, J. (2000) · Journal of Cellular Physiology · doi:10.1002/(sici)1097-4652(200003)182:3 · Cited by 4,707
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Yang, M., Zhong, P., & Wei, P. (2025) · International Journal of Molecular Sciences · doi:10.3390/ijms26052056 · Cited by 17
Sengyee, S., Yoon, S. H., West, T. E., Ernst, R. K., & Chantratita, N. (2019) · Infection and Immunity · doi:10.1128/iai.00692-19 · Cited by 17
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Liu, Q., Liu, Q., Zhao, X., Yang, X., Liu, Q., & Kong, Q. (2015) · Marine Drugs · doi:10.3390/md13063388 · Cited by 16
Alquria, T., Alfirdous, R. A., Gupta, R., Santamaria, M. P., Mathias‐Santamaria, I. F., Gomes, A. P. M., Tiradentes, N., Silva, E. G., & Martinho, F. C. (2023) · Scientific Reports · doi:10.1038/s41598-022-26855-y · Cited by 15
El-Baky, R. M. A., Mandour, S. A., Ahmed, E. F., Hashem, Z. S., Sandle, T., & Mohamed, D. S. (2020) · PLoS ONE · doi:10.1371/journal.pone.0243418 · Cited by 15
Chen, Z., Wang, B., Zheng, J., Liu, C., Xu, P., Zhou, Q., Li, J., Shi, Z., Wang, Z., Wang, X., et al. (2025) · Journal of Nanobiotechnology · doi:10.1186/s12951-025-03507-7 · Cited by 15
Bacterial outer-membrane vesicles promote Vγ9Vδ2 T cell oncolytic activity
Firth, J., Sun, J., George, V., Huang, J., Bajaj‐Elliott, M., & Gustafsson, K. T. (2023) · Frontiers in Immunology · doi:10.3389/fimmu.2023.1198996 · Cited by 15
E. coli Lipopolysaccharide: Acute oral toxicity study in mice
Harper, M. S., Carpenter, C., Klocke, D. J., Carlson, G. A., Davis, T., & Delaney, B. (2011) · Food and Chemical Toxicology · doi:10.1016/j.fct.2011.04.025 · Cited by 14
Tsuneyoshi, N., Kohara, J., Bahrun, U., Saitoh, S.-I., Akashi, S., Gauchat, J., Kimoto, M., & Fukudome, K. (2006) · Cellular Immunology · doi:10.1016/j.cellimm.2007.02.010 · Cited by 14
Chang, J., Jain, S., Carl, D. J., Paolella, L. J., Darveau, R. P., Gravett, M. G., & Waldorf, K. M. A. (2010) · Placenta · doi:10.1016/j.placenta.2010.06.010 · Cited by 13
Self-citationSchilling, B., Hunt, J. R., Gibson, B. W., & Apicella, M. A. (2013) · Innate Immunity · doi:10.1177/1753425913490534 · Cited by 13
Kohara, J., Tsuneyoshi, N., Gauchat, J., Kimoto, M., & Fukudome, K. (2006) · Protein Expression and Purification · doi:10.1016/j.pep.2006.05.015 · Cited by 13
Fadl, A. A., Sha, J., Klimpel, G. R., Olano, J. P., Galindo, C. L., & Chopra, A. K. (2005) · Infection and Immunity · doi:10.1128/iai.73.12.8433-8436.2005 · Cited by 13
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Tourret, J., Aloulou, M., Garry, L., Tenaillon, O., Dion, S., Ryffel, B., Monteiro, R. C., & Denamur, É. (2010) · Microbiology · doi:10.1099/mic.0.037416-0 · Cited by 13
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Dubničková, M., Řezanka, T., & Koščová, H. (2006) · Folia Microbiologica · doi:10.1007/bf02931578 · Cited by 11
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Basso, H., Rharbaoui, F., Staendner, L. H., Medina, E., del Portillo, F. G., & Guzmán, C. A. (2002) · Infection and Immunity · doi:10.1128/iai.70.10.5404-5411.2002 · Cited by 10
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Nagy, L. E., Urban, P. P., Makszin, L., Sándor, V., Kilár, A., Ábrahám, H., Albert, B., Kocsis, B., & Kilár, F. (2022) · Cells · doi:10.3390/cells11203249 · Cited by 8
Oblak, A., & Jerala, R. (2014) · PLoS ONE · doi:10.1371/journal.pone.0107520 · Cited by 8
Reil, K. A., Tsuji, S., Molina, E., Nelson, K. L., McGuire, K. L., & Giacalone, M. J. (2023) · Journal for ImmunoTherapy of Cancer · doi:10.1136/jitc-2023-006749 · Cited by 6
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King, I., Luo, X., Feng, M., Ittensohn, M., Li, Z., Belcourt, M. F., Lin, S. L., Le, T., Pike, J., Troy, K., et al. (2000) · Emerging Drugs · doi:10.1517/14728214.5.2.211 · Cited by 6
Singh, R., Thakur, L., Kumar, A., Singh, S., Kumar, S., Kumar, M., Kumar, Y., & Kumar, N. (2023) · Frontiers in Microbiology · doi:10.3389/fmicb.2023.1152162 · Cited by 6
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Hauschildt, S., Brabetz, W., Schromm, A. B., Hamann, L., Zabel, P., Rietschel, E., & Müller‐Loennies, S. (2000) · Springer eBooks · doi:10.1007/978-3-662-05971-5_27 · Cited by 6
Tang, M., Lv, W., Gao, X., Xu, C., Zhang, T., Liang, B., Zhao, X., Liao, H., Du, C., Li, X., et al. (2026) · ACS Nano · doi:10.1021/acsnano.5c14341 · Cited by 4
Signal transduction triggered by lipid A-like molecules in 70Z/3 pre-B lymphocyte tumor cells
Garrett, T. A., Rosser, M. F. N., & Raetz, C. R. (1999) · Biochimica et Biophysica Acta (BBA) - Molecular and Cell Biology of Lipids · doi:10.1016/s1388-1981(99)00014-1 · Cited by 4
Zhang, J. (2008) · Chinese journal of biotechnology/Shengwu gongcheng xuebao · doi:10.1016/s1872-2075(08)60005-9 · Cited by 4
Jun-kui, Z., Morrison, T. K., Falk, M. C., Kang, Y., & Lee, C. (1996) · Journal of Endotoxin Research · doi:10.1177/096805199600300404 · Cited by 4
Duan, H., Shen, C., Fu, X., Yang, W., Gao, L., Wu, Y., Wei, Z., Wang, J., Ma, F., Jia, Y., et al. (2026) · Biomaterials · doi:10.1016/j.biomaterials.2026.124222 · Cited by 4
Advances in Protein Production Technologies
Lua, L. H. L., & Chuan, Y. P. (2012) · Wiley eBooks · doi:10.1002/9783527653096.ch2 · Cited by 3
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Aquilini, E. (2013) · LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) · Cited by 3
Xiong, Z., Tang, X., Yang, F., Zhang, X., Yang, J., Chen, L., Nie, H., Yan, Y., Jiang, Y., Wang, J., et al. (2006) · Science in China Series C Life Sciences · doi:10.1007/s11427-006-0141-3 · Cited by 3
Design, synthesis and immunological evaluation of novel monosaccharide TLR4 agonists
Zhang, Z.-M., Wen, Y., Luo, M.-Q., Sun, H.-L., Ding, D., Liao, C.-M., & Guo, J. (2026) · Bioorganic Chemistry · doi:10.1016/j.bioorg.2026.109717 · Cited by 2
Yinhuang buccal tablet alters airway microbiota composition and metabolite profile in healthy humans
Li, Z., Liu, T., Wang, S., Chen, T., Wang, X., Xu, X., & Liu, Q. (2024) · Journal of Ethnopharmacology · doi:10.1016/j.jep.2024.118043 · Cited by 1
Poloamina, V. I., Alrammah, H. S. A. A., Abate, W., Avent, N. D., Fejér, G., & Jackson, S. K. (2024) · Biology · doi:10.3390/biology13050314 · Cited by 1
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Chen, L., Huang, D., Yin, H., Zhang, X., Ji, F., & Wang, X. (2024) · Food Bioscience · doi:10.1016/j.fbio.2024.105810 · Cited by 1
Brabetz, W., Mamat, U., Alexander, C., & Rietschel, E. (1999) · Springer eBooks · doi:10.1007/978-3-642-59947-7_7 · Cited by 1
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Nativel, B. (2017) · theses.fr (ABES) · doi:10.70675/91c53836zeacaz4fb5zb3c2z6ae726cd628e · Cited by 1
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Roche, N., Bergsten, G., Fischer, H., Godaly, G., Irjala, H., Lundstedt, A.-C., Samuelsson, P., Svensson, M., Ragnarsdóttir, B., & Svanborg, C. (2014) · ASM Press eBooks · doi:10.1128/9781555817619.ch25
Clifford, E. (2010) · Maynooth University ePrints and eTheses Archive (Maynooth University)
Maggiore, L. (2012) · Padua Research Archive (University of Padova)
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Trent, M. S. (2010) · Elsevier eBooks · doi:10.1016/b978-0-12-374546-0.00017-1
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White, J. E., & Tsan, M. (2000) · Journal of Endotoxin Research · doi:10.1177/09680519000060040901
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Jun, S. (2009) · Montana State University ScholarWorks (Montana State University)
Leibiger, R. (2010) · mediaTUM – the media and publications repository of the Technical University Munich (Technical University Munich)
Bermudes, D. G. (2019) · Elsevier eBooks · doi:10.1016/b978-0-12-801238-3.11362-5
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Jiang, L. (2021) · Utrecht University Repository (Utrecht University) · doi:10.33540/536
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Janssen, A. B. (2020) · Utrecht University Repository (Utrecht University) · doi:10.33540/310
(2005) · Science in China Series C-Life Sciences (in Chinese) · doi:10.1360/052005-23
Weiss, J. P. (2018) · Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature · doi:10.3410/f.727227047.793544995
Andreani, V., Gatti, G., Simonella, L. E., Rivero, V., & Maccioni, M. (2023) · doi:10.1158/0008-5472.c.6496259.v1
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Poloamina, V. I., Abate, W., Fejér, G., & Jackson, S. K. (2023) · bioRxiv (Cold Spring Harbor Laboratory) · doi:10.1101/2023.06.27.546434
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Webb, A. E. (2015) · Dublin City University Open Access Institutional Repository (Dublin City University)
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Sipka, T. (2020) · theses.fr (ABES) · doi:10.70675/fe270cfcz6d95z4dfaz86a6z01efaf8a5ef7
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Metadata
- Authors
- Somerville, J. E., Cassiano, L., Bainbridge, B., Cunningham, M. D., & Darveau, R. P.
- Affiliations
- Bristol-Myers Squibb (United States) (US)
- Venue
- Journal of Clinical Investigation
- Published
- 1996-01-15
- Volume
- 97
- Issue
- 2
- Pages
- 359-365
- ISSN
- 0021-9738 (ISSN-L)
- PMC
- PMC507025
- OpenAlex
- W2006697711
- Cited by
- 275
- References
- 31
- Citations by year
- 2026: 4 · 2025: 5 · 2024: 7 · 2023: 10 · 2022: 8 · 2021: 3 · 2020: 6 · 2019: 5 · 2018: 6 · 2017: 10 · 2016: 5 · 2015: 6 · 2014: 7 · 2013: 11 · 2012: 8
- FWCI
- 5.07
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Journal of Clinical Investigation (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Bristol-Myers Squibb
- Topics
- Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
- Life Sciences › Immunology and Microbiology › Microbiology › Escherichia coli research studies
- Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
- Keywords
- Escherichia coli, lipid A, lipopolysaccharide biosynthesis, E-selectin, endothelial cells, TNF-α, monocytes, immune cell activation, complementation
- MeSH terms
- Acyltransferases, Cells, Cultured, Endothelium, Vascular, Escherichia coli, Fatty Acids, Humans, Isomerases, Lipid A, Lipopolysaccharides, Myristic Acids, Structure-Activity Relationship, Tumor Necrosis Factor-alpha, Mutagenesis, E-Selectin, Protein Disulfide-Isomerases, Myristic Acid, Escherichia coli Proteins
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