1
|
Olsen MR, Colliard I, Rahman T, Miyaishi TC, Harper B, Harper S, Nyman M. Hybrid Polyoxometalate Salt Adhesion by Butyltin Functionalization. ACS Appl Mater Interfaces 2021; 13:19497-19506. [PMID: 33856779 DOI: 10.1021/acsami.1c03269] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Polyoxometalate (POM)-based ionic liquids, with nearly infinite compositional variations to fine-tune antimicrobial and physical properties, function as water purification filters, anticorrosion/antibacterial coatings for natural stones, self-repairing acid-resistant coatings, catalysts, and electroactive, stable solvents. By combining hydrophobic quaternary ammonium cations (QACs; tetraheptylammonium and trihexyltetradecylammonium) with butyltin-substituted polyoxotungstates [(BuSn)3(α-SiW9O37)] via repeated solvent extraction-ion exchange, we obtained phase-pure hybrid POM salts (referred to as such because they melt above room temperature). If the solvent extraction process is performed only once, then solids with high salt contamination and considerably lower melting temperatures are obtained. Solution-phase behavior, based on POM-QAC interactions, was similar for all formulations in polar and nonpolar organic solvents, as observed by X-ray scattering and multinuclear magnetic resonance spectroscopy. However, solid thin films of the butyltin-functionalized hybrid POM salts were significantly more stable and adhesive than their inorganic analogues. We attribute this to the favorable hydrophobic interactions between the butyltin groups and the QACs. All synthesized hybrid POM salts display a potent antimicrobial activity toward Escherichia coli. These studies provide fundamental form-function understanding of hybrid POM salts, based on interactions between ions in these complex hybrid phases.
Collapse
Affiliation(s)
- Morgan Rose Olsen
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
- Department of Chemistry, Reed College, Portland, Oregon 97202, United States
| | - Ian Colliard
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
| | - Tasnim Rahman
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
| | - Taiki C Miyaishi
- Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, Oregon 97331, United States
- School of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, Oregon 97331, United States
| | - Bryan Harper
- Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, Oregon 97331, United States
| | - Stacey Harper
- Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis, Oregon 97331, United States
- School of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, Oregon 97331, United States
| | - May Nyman
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
| |
Collapse
|
2
|
Abstract
We report a hierarchical self-assembly engineering of tin-oxo clusters from nanosized hydrophobic clusters to a single-layer film of assembled clusters. These clusters are derivatives of the previously reported Na-centered butyltin Keggin ions, but they are bicapped with butyltin and with borate ligands. The formulas γ-[( n-BuSn)14(OCH3)10(OH)3O9(NaO4)(HBO3)2] and γ-[( n-BuSn)14(OCH3)10(OH)3O9(NaO4)(PhBO2)2] were determined from single-crystal X-ray diffraction and bulk solution characterization including small-angle X-ray scattering, electrospray ionization mass spectrometry, and multinuclear and multidimensional NMR (119Sn, 13C, and 1H). Solution characterization confirms that borate functionalization inhibits the solution-phase β-γ Keggin isomer interconversion that was recognized prior for uncapped butyltin clusters, and in this case, the γ isomer is favored. The assembly of the γ-NaSn14BO3 clusters into a homogeneous Langmuir-Blodgett monolayer is the first step toward creating nanopatterned films for microelectronic devices.
Collapse
Affiliation(s)
- Yu Zhu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter (FJIRSM) , Chinese Academy of Sciences , Fuzhou , Fujian 350002 , P. R. China
| | - Morgan Rose Olsen
- Department of Chemistry , Oregon State University (OSU) , Corvallis , Oregon 97331 , United States
| | - May Nyman
- Department of Chemistry , Oregon State University (OSU) , Corvallis , Oregon 97331 , United States
| | - Lei Zhang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter (FJIRSM) , Chinese Academy of Sciences , Fuzhou , Fujian 350002 , P. R. China
| | - Jian Zhang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter (FJIRSM) , Chinese Academy of Sciences , Fuzhou , Fujian 350002 , P. R. China
| |
Collapse
|
3
|
Love RR, Olsen MR, Havighurst TC. Delayed adjuvant tamoxifen in postmenopausal women with axillary node-negative breast cancer: mortality over 10 years. J Natl Cancer Inst 1999; 91:1167-8. [PMID: 10393732 DOI: 10.1093/jnci/91.13.1167] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
4
|
McNicholl JM, Bond KB, Ruhadze ER, Olsen MR, Takayama K, Hunter RL. Enhancement of HIV type 1 vaccine immunogenicity by block copolymer adjuvants. I. Induction of high-titer, long-lasting, cross-reactive antibodies of broad isotype. AIDS Res Hum Retroviruses 1998; 14:1457-71. [PMID: 9824324 DOI: 10.1089/aid.1998.14.1457] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Improvements in HIV-1 vaccines are urgently needed since many of the available vaccines are weak immunogens. We examined the ability of CRL1005, a novel nonionic block copolymer adjuvant, to improve the immunogenicity of multiple HIV-1 envelope vaccines: six gp120s and single and multiple V3 peptides (MAPs). Formulation of vaccine with adjuvant, as compared with alum or saline, enhanced antibody titer in mice up to 200-fold, with antibody half-lives of >200 days. For most vaccinations, an oil-in-water formulation induced the highest antibody titers; for some antigens, however, particularly single peptides, water-in-oil (w/o) was better. Antigen cross-reactivity was optimized by formulation in w/o, while addition of detoxified lipopolysaccharide enhanced levels of IgG2a and IgG2b. After more than 1 year of observation, no vaccine-related toxicity was observed and emulsified antigen in encapsulated depots was found at immunization sites of w/o-immunized animals. No other adjuvant has been reported to induce such long-lasting antibodies, and the ability of CRL1005 to greatly amplify and qualitatively modify antibody responses suggests that it may be useful in developing improved HIV vaccines for humans.
Collapse
Affiliation(s)
- J M McNicholl
- Immunology Branch, DASLTR, NCID, CDC, Atlanta, Georgia 30333, USA
| | | | | | | | | | | |
Collapse
|
5
|
Olsen MR, Love RR. Hormonal strategies for the prevention of breast cancer. Cancer Treat Res 1998; 94:135-57. [PMID: 9587686 DOI: 10.1007/978-1-4615-6189-7_8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- M R Olsen
- Cancer Prevention Program, University of Wisconsin, 7C Medical Sciences Center, Madison 53706, USA
| | | |
Collapse
|
6
|
Hunter RL, Kidd MR, Olsen MR, Patterson PS, Lal AA. Induction of long-lasting immunity to Plasmodium yoelii malaria with whole blood-stage antigens and copolymer adjuvants. The Journal of Immunology 1995. [DOI: 10.4049/jimmunol.154.4.1762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
We previously reported that protection of mice from nonlethal Plasmodium yoelii malaria by immunization with whole killed blood-stage parasites was dependent on the adjuvant and that adjuvants influenced both the specificity and isotype of Ab. Additional studies with the most effective formulations were undertaken to better define the protective responses and 100% protection from lethal P. yoelii malaria was produced by three immunizations with Ag in copolymer P1004 and detoxified RaLPS as adjuvants and 83% protection was induced by a single immunization. The protection lasted for 9 mo and was associated with an anamnestic rise in Ab titer of the IgG2a isotype during the challenge infection. Passive immunization with Ab from animals that had been immunized and challenged transferred sterile immunity. Splenectomy reduced, but did not abolish, protection. These data suggest that the effective Ab is directed against labile epitopes on the surface of blood-stage parasites. The vaccines primed animals for production of such Ab, but its synthesis was efficiently induced only by challenge with live organisms.
Collapse
Affiliation(s)
- R L Hunter
- Department of Pathology and Laboratory Medicine, Emory University, Atlanta, GA 30322
| | - M R Kidd
- Department of Pathology and Laboratory Medicine, Emory University, Atlanta, GA 30322
| | - M R Olsen
- Department of Pathology and Laboratory Medicine, Emory University, Atlanta, GA 30322
| | - P S Patterson
- Department of Pathology and Laboratory Medicine, Emory University, Atlanta, GA 30322
| | - A A Lal
- Department of Pathology and Laboratory Medicine, Emory University, Atlanta, GA 30322
| |
Collapse
|
7
|
Hunter RL, Kidd MR, Olsen MR, Patterson PS, Lal AA. Induction of long-lasting immunity to Plasmodium yoelii malaria with whole blood-stage antigens and copolymer adjuvants. J Immunol 1995; 154:1762-9. [PMID: 7836760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
We previously reported that protection of mice from nonlethal Plasmodium yoelii malaria by immunization with whole killed blood-stage parasites was dependent on the adjuvant and that adjuvants influenced both the specificity and isotype of Ab. Additional studies with the most effective formulations were undertaken to better define the protective responses and 100% protection from lethal P. yoelii malaria was produced by three immunizations with Ag in copolymer P1004 and detoxified RaLPS as adjuvants and 83% protection was induced by a single immunization. The protection lasted for 9 mo and was associated with an anamnestic rise in Ab titer of the IgG2a isotype during the challenge infection. Passive immunization with Ab from animals that had been immunized and challenged transferred sterile immunity. Splenectomy reduced, but did not abolish, protection. These data suggest that the effective Ab is directed against labile epitopes on the surface of blood-stage parasites. The vaccines primed animals for production of such Ab, but its synthesis was efficiently induced only by challenge with live organisms.
Collapse
Affiliation(s)
- R L Hunter
- Department of Pathology and Laboratory Medicine, Emory University, Atlanta, GA 30322
| | | | | | | | | |
Collapse
|
8
|
Abstract
We evaluated an adjuvant, TiterMax, as an alternative to complete Freund's adjuvant (CFA) for producing antisera in animals. TiterMax, consists of a microparticulate stabilized water-in-oil emulsion of a metabolizable oil, squalene, with the adjuvant block copolymer CRL89-41. This paper reports two evaluations of TiterMax versus CFA and other commercially available adjuvants. In the first study, mice were immunized with a hapten, trinitrophenol, conjugated to hen egg albumin (TNP-HEA) in one of several adjuvants: TiterMax, CFA, Adjuvax, Ribi adjuvant system (RAS), Alhydrogel or Lipovant. TiterMax induced higher longer lasting titers with fewer injections than any of the other adjuvants. The magnitude of the response to TNP varied with species and route of immunization. In the second study, CFA, TiterMax, Adjuvax and RAS were compared in rabbits, mice and goats. Animals were immunized with luteinizing hormone-releasing hormone (LHRH) conjugated to BSA in each adjuvant using comparable protocols. TiterMax induced titers against the peptide equivalent to CFA in all three species. The inflammatory responses induced by TiterMax were mild and transient compared with those induced by CFA. These data suggest that TiterMax is an effective alternative to CFA in many situations.
Collapse
Affiliation(s)
- B Bennett
- Department of Pathology and Laboratory Medicine, Emory University, Atlanta, GA 30322
| | | | | | | |
Collapse
|
9
|
Beisel KW, Srinivasappa J, Olsen MR, Stiff AC, Essani K, Prabhakar BS. A neutralizing monoclonal antibody against Coxsackievirus B4 cross-reacts with contractile muscle proteins. Microb Pathog 1990; 8:151-6. [PMID: 2161486 DOI: 10.1016/0882-4010(90)90079-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A panel of Coxsackievirus B4 (CVB4) neutralizing monoclonal antibodies (mAbs) were tested against a panel of normal mouse tissues. One mAb, 356-1, reacted specifically with murine heart tissue. Immunohistochemical studies revealed an A band pattern of staining of the heart. Examination of sequential differential extracts of heart by Western immunoblotting showed that 356-1 predominantly reacted with the murine cardiac myosin heavy chain. A rather weak cross-reaction was found with actin. These observations were confirmed by the binding of 356-1 to purified cardiac myosin and actin. This antibody showed a higher affinity for murine cardiac muscle myosin than for skeletal muscle myosin. Examination of the reactivity of 356-1 with CVB4 polypeptides using Western immunoblotting revealed that 356-1 binds to the VP-1 capsid protein. These studies imply that molecular mimicry is one mechanism by which autoimmunity could develop during CVB4 induced myocarditis.
Collapse
Affiliation(s)
- K W Beisel
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha 68198
| | | | | | | | | | | |
Collapse
|
10
|
Bhattacharyya KK, Olsen MR, Mueller GC. Reactivation of affinity-purified estrogen receptors by peptides derived from histone H2B. Biochem Biophys Res Commun 1987; 149:823-9. [PMID: 3426603 DOI: 10.1016/0006-291x(87)90441-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Purification of estrogen receptors by affinity chromatography over diethylstilbestrol-agarose is associated with a major loss of estradiol binding activity. Histone H2B can restore a significant fraction of the binding activity. Cleavage of the H2B molecule into two halves by cyanogen bromide reveals that the carboxyl terminus is responsible for the major reactivating effects.
Collapse
Affiliation(s)
- K K Bhattacharyya
- McArdle Laboratory for Cancer Research, The University of Wisconsin-Madison 53706
| | | | | |
Collapse
|
11
|
Abstract
Two estrogen binding proteins (Mr = 50,000 and 65,000) were purified from rabbit uterine cytosol using an improved procedure for affinity chromatography on diethylstilbestrol-agarose. The estrogen receptors were radioiodinated while adsorbed to the resin using the lactoperoxidase or Bolton-Hunter techniques. After elution, the labeled receptors were utilized for peptide mapping studies and investigations of receptor function. Partial peptide mapping revealed strong homology between the Mr 50,000 and 65,000 proteins suggesting common structural features. Estrogen receptors labeled by the lactoperoxidase procedure were rendered unable to bind immobilized heparin or hormone; in contrast, the Bolton-Hunter labeling technique yields proteins that retain both their ability to bind hormone and to absorb on heparin-agarose. The development of these iodination methodologies appears useful for the investigation of both the structure and functional properties of the receptor proteins.
Collapse
|
12
|
Van Oosbree TR, Olsen MR, Tate AC, Jordan VC, Mueller GC. An immobilized antiestrogen binds a specific uterine protein in addition to estrogen receptor proteins. Mol Cell Endocrinol 1984; 35:143-9. [PMID: 6734928 DOI: 10.1016/0303-7207(84)90010-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
An antiestrogen affinity resin was synthesized by conjugating LY117018, a benzothiophene -derived antiestrogen, to epoxy-activated agarose. This affinity resin bound the Mr = 50 000 and 65 000 estrogen receptor proteins of rabbit uterine cytosol; in addition, it retained a protein from the cytosols of both rat and rabbit uteri that exhibited an ability to interact specifically with LY117018. The possibility that the LY117018 binding protein, which is distinct from estrogen receptors, may play a role in the antiestrogenic actions of LY117018 is discussed.
Collapse
|