1
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Singh S, Tian W, Severance ZC, Chaudhary SK, Anokhina V, Mondal B, Pergu R, Singh P, Dhawa U, Singha S, Choudhary A. Proximity-inducing modalities: the past, present, and future. Chem Soc Rev 2023; 52:5485-5515. [PMID: 37477631 DOI: 10.1039/d2cs00943a] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/22/2023]
Abstract
Living systems use proximity to regulate biochemical processes. Inspired by this phenomenon, bifunctional modalities that induce proximity have been developed to redirect cellular processes. An emerging example of this class is molecules that induce ubiquitin-dependent proteasomal degradation of a protein of interest, and their initial development sparked a flurry of discovery for other bifunctional modalities. Recent advances in this area include modalities that can change protein phosphorylation, glycosylation, and acetylation states, modulate gene expression, and recruit components of the immune system. In this review, we highlight bifunctional modalities that perform functions other than degradation and have great potential to revolutionize disease treatment, while also serving as important tools in basic research to explore new aspects of biology.
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Affiliation(s)
- Sameek Singh
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA.
| | - Wenzhi Tian
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA.
| | - Zachary C Severance
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA.
| | - Santosh K Chaudhary
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA.
| | - Viktoriya Anokhina
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA.
| | - Basudeb Mondal
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA.
| | - Rajaiah Pergu
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA.
| | - Prashant Singh
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA.
| | - Uttam Dhawa
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA.
| | - Santanu Singha
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA.
| | - Amit Choudhary
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA.
- Department of Medicine, Harvard Medical School, Boston, MA 02115, USA
- Divisions of Renal Medicine and Engineering, Brigham and Women's Hospital, Boston, MA 02115, USA
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2
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Doherty MK, Shaw C, Woods L, Weimer BC. Alpha-Gal Bound Aptamer and Vancomycin Synergistically Reduce Staphylococcus aureus Infection In Vivo. Microorganisms 2023; 11:1776. [PMID: 37512948 PMCID: PMC10383818 DOI: 10.3390/microorganisms11071776] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Revised: 07/02/2023] [Accepted: 07/05/2023] [Indexed: 07/30/2023] Open
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) is a pervasive and persistent threat that requires the development of novel therapies or adjuvants for existing ones. Aptamers, small single-stranded oligonucleotides that form 3D structures and can bind to target molecules, provide one possible therapeutic route, especially when presented in combination with current antibiotic applications. BALB/c α-1, 3-galactosyltransferase (-/-) knockout (GTKO) mice were infected with MRSA via tail vein IV and subsequently treated with the αSA31 aptamer (n = 4), vancomycin (n = 12), or αSA31 plus vancomycin (n = 12), with split doses in the morning and evening. The heart, lungs, liver, spleen, and kidneys were harvested upon necropsy for histological and qPCR analysis. All mice treated with αSA31 alone died, whereas 5/12 mice treated with vancomycin alone and 7/12 mice treated with vancomycin plus αSA31 survived the course of the experiment. The treatment of MRSA-infected mice with Vancomycin and an adjuvant aptamer αSA31 reduced disease persistence and dispersion as compared to treatment with either vancomycin SA31 alone, indicating the combination of antibiotic and specifically targeted αSA31 aptamer could be a novel way to control MRSA infection. The data further indicate that aptamers may serve as a potential therapeutic option for other emerging antibiotic resistant pathogens.
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Affiliation(s)
- Matthew K Doherty
- Population Health and Reproduction, University of California Davis, Davis, CA 95616, USA
| | - Claire Shaw
- Population Health and Reproduction, University of California Davis, Davis, CA 95616, USA
| | - Leslie Woods
- California Animal Health and Food Safety Laboratory, University of California Davis, Davis, CA 95616, USA
| | - Bart C Weimer
- Population Health and Reproduction, University of California Davis, Davis, CA 95616, USA
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3
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Kondengadan SM, Bansal S, Yang C, Liu D, Fultz Z, Wang B. Click chemistry and drug delivery: A bird’s-eye view. Acta Pharm Sin B 2022; 13:1990-2016. [DOI: 10.1016/j.apsb.2022.10.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/12/2022] [Accepted: 10/12/2022] [Indexed: 11/01/2022] Open
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4
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Charles WZ, Faries CR, Street YT, Flowers LS, McNaughton B. Antibody‐Recruitment as a Therapeutic Strategy: A Brief History and Recent Advances. Chembiochem 2022; 23:e202200092. [DOI: 10.1002/cbic.202200092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 04/20/2022] [Indexed: 11/09/2022]
Affiliation(s)
| | | | | | | | - Brian McNaughton
- Delaware State University Delaware Institute for Science and Technology 1200 N Dupont Hwy 19901 Dover UNITED STATES
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5
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Ou C, Prabhu SK, Zhang X, Zong G, Yang Q, Wang LX. Synthetic Antibody-Rhamnose Cluster Conjugates Show Potent Complement-Dependent Cell Killing by Recruiting Natural Antibodies. Chemistry 2022; 28:e202200146. [PMID: 35106843 PMCID: PMC8930617 DOI: 10.1002/chem.202200146] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Indexed: 11/06/2022]
Abstract
Monoclonal antibodies (mAbs) are one of the most rapidly growing drug classes used for the treatment of cancer, infectious and autoimmune diseases. Complement-dependent cytotoxicity (CDC) is one of the effector functions for antibodies to deplete target cells. We report here an efficient chemoenzymatic synthesis of structurally well-defined conjugates of a monoclonal antibody with a rhamnose- and an αGal trisaccharide-cluster to recruit natural anti-rhamnose and anti-αGal antibodies, respectively, to enhance the CDC-dependent targeted cell killing. The synthesis was achieved by using a modular antibody Fc-glycan remodeling method that includes site-specific chemoenzymatic Fc-glycan functionalization and subsequent click conjugation of synthetic rhamnose- and αGal trisaccharide-cluster to provide the respective homogeneous antibody conjugates. Cell-based assays indicated that the antibody-rhamnose cluster conjugates could mediate potent CDC activity for targeted cancer cell killing and showed much more potent efficacy than the antibody-αGal trisaccharide cluster conjugates for CDC effects.
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Affiliation(s)
- Chong Ou
- Department of Chemistry and Biochemistry, University of Maryland, 8051 Regents Drive, College Park, Maryland, 20742, United States
| | - Sunaina Kiran Prabhu
- Department of Chemistry and Biochemistry, University of Maryland, 8051 Regents Drive, College Park, Maryland, 20742, United States
| | - Xiao Zhang
- Department of Chemistry and Biochemistry, University of Maryland, 8051 Regents Drive, College Park, Maryland, 20742, United States
| | - Guanghui Zong
- Department of Chemistry and Biochemistry, University of Maryland, 8051 Regents Drive, College Park, Maryland, 20742, United States
| | - Qiang Yang
- Department of Chemistry and Biochemistry, University of Maryland, 8051 Regents Drive, College Park, Maryland, 20742, United States
| | - Lai-Xi Wang
- Department of Chemistry and Biochemistry, University of Maryland, 8051 Regents Drive, College Park, Maryland, 20742, United States
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6
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Parashar S, Gupta V, Bhatnagar R, Kausar A. A clickable folic acid-rhamnose conjugate for selective binding to cancer cells. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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7
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Dai S, Hong H, Zhou K, Zhao K, Xie Y, Li C, Shi J, Zhou Z, Nie L, Wu Z. Exendin 4-Hapten Conjugate Capable of Binding with Endogenous Antibodies for Peptide Half-life Extension and Exerting Long-Acting Hypoglycemic Activity. J Med Chem 2021; 64:4947-4959. [PMID: 33825469 DOI: 10.1021/acs.jmedchem.1c00032] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Hapten-specific endogenous antibodies are naturally occurring antibodies present in human blood. Herein, we investigated a new strategy in which small-molecule haptens were utilized as naturally occurring antibody binders for peptide half-life extension. The glucagon-like peptide 1 receptor agonist exendin 4 was site-specifically functionalized with the dinitrophenyl (DNP) hapten at the C-terminus via sortase A-mediated ligation. The resulting Ex4-DNP conjugates retained GLP-1 receptor activation potency in vitro and had a similar in vivo acute glucose-lowering effect comparable to that of native Ex4. Pharmacokinetic studies and hypoglycemic duration tests demonstrated that the Ex4-DNP conjugates displayed significantly elongated half-lives and improved long-acting antidiabetic activity in the presence of endogenous anti-DNP antibodies. In chronic treatment studies, once-daily administration of optimal conjugate 7 demonstrated more beneficial effects without prominent toxicity compared with Ex4. This strategy provides a new approach and represents an alternative to the well-established peptide-Fc fusion strategy to improve the peptide half-life and the therapeutic efficacy.
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Affiliation(s)
- Shijie Dai
- Key Laboratory of Carbohydrate Chemistry & Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 214122 Wuxi, China
| | - Haofei Hong
- Key Laboratory of Carbohydrate Chemistry & Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 214122 Wuxi, China
| | - Kun Zhou
- Key Laboratory of Carbohydrate Chemistry & Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 214122 Wuxi, China
| | - Kai Zhao
- Key Laboratory of Carbohydrate Chemistry & Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 214122 Wuxi, China
| | - Yuntian Xie
- Key Laboratory of Carbohydrate Chemistry & Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 214122 Wuxi, China
| | - Chen Li
- Key Laboratory of Carbohydrate Chemistry & Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 214122 Wuxi, China
| | - Jie Shi
- Key Laboratory of Carbohydrate Chemistry & Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 214122 Wuxi, China
| | - Zhifang Zhou
- Key Laboratory of Carbohydrate Chemistry & Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 214122 Wuxi, China
| | - Lei Nie
- Hisun Biopharmaceutical Co., Limited, 8 Hisun Road, Xialian Village, Xukou Town, Fuyang District, 311404 Hangzhou, Zhejiang, China
| | - Zhimeng Wu
- Key Laboratory of Carbohydrate Chemistry & Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 214122 Wuxi, China
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8
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Sasaki K, Muguruma K, Osawa R, Fukuda A, Taniguchi A, Kishimura A, Hayashi Y, Mori T, Katayama Y. Synthesis and biological evaluation of a monocyclic Fc-binding antibody-recruiting molecule for cancer immunotherapy. RSC Med Chem 2021; 12:406-409. [PMID: 34046623 PMCID: PMC8130626 DOI: 10.1039/d0md00337a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 01/10/2021] [Indexed: 11/21/2022] Open
Abstract
Antibody-recruiting molecules (ARMs) are bispecific molecules composed of an antibody-binding motif and a target-binding motif that redirect endogenous antibodies to target cells to elicit immune responses. To enhance the translational potential of ARMs, it is crucial to design antibody/target-binding motifs that have strong affinity and are easy to synthesize. Here, we synthesized a novel Fc-binding ARM (Fc-ARM) that targets folate receptor (FR)-positive cancer cells, Reo-3, using a recently developed monocyclic peptide 15-Lys8Leu, which binds strongly to the Fc region of an antibody. Reo-3 bound to the Fc region of the antibody with a K d of 5.8 nM, and recruited a clinically used antibody mixture to attack FR-positive IGROV-1 cells as efficiently as Fc-ARM2, in which a bicyclic Fc-binding peptide was used. These results indicate that 15-Lys8Leu, which can be synthesized readily, is suitable for various applications including the development of Fc-ARMs.
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Affiliation(s)
- Koichi Sasaki
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu University Fukuoka 819-0395 Japan
| | - Kyohei Muguruma
- Department of Medicinal Chemistry, Tokyo University of Pharmacy and Life Sciences Tokyo 192-0392 Japan
| | - Rento Osawa
- Department of Medicinal Chemistry, Tokyo University of Pharmacy and Life Sciences Tokyo 192-0392 Japan
| | - Akane Fukuda
- Department of Medicinal Chemistry, Tokyo University of Pharmacy and Life Sciences Tokyo 192-0392 Japan
| | - Atsuhiko Taniguchi
- Department of Medicinal Chemistry, Tokyo University of Pharmacy and Life Sciences Tokyo 192-0392 Japan
| | - Akihiro Kishimura
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu University Fukuoka 819-0395 Japan
- Graduate School of Systems Life Sciences, Kyushu University Fukuoka 819-0395 Japan
- International Research Center for Molecular Systems, Kyushu University Fukuoka 819-0395 Japan
| | - Yoshio Hayashi
- Department of Medicinal Chemistry, Tokyo University of Pharmacy and Life Sciences Tokyo 192-0392 Japan
| | - Takeshi Mori
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu University Fukuoka 819-0395 Japan
- Graduate School of Systems Life Sciences, Kyushu University Fukuoka 819-0395 Japan
| | - Yoshiki Katayama
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu University Fukuoka 819-0395 Japan
- Graduate School of Systems Life Sciences, Kyushu University Fukuoka 819-0395 Japan
- International Research Center for Molecular Systems, Kyushu University Fukuoka 819-0395 Japan
- Department of Biomedical Engineering, Chung Yuan Christian University Taoyuan Taiwan
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9
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Uvyn A, De Geest BG. Multivalent Antibody-Recruiting Macromolecules: Linking Increased Binding Affinity with Enhanced Innate Immune Killing. Chembiochem 2020; 21:3036-3043. [PMID: 32497371 PMCID: PMC7116353 DOI: 10.1002/cbic.202000261] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/02/2020] [Indexed: 12/17/2022]
Abstract
Antibody-recruiting molecules (ARMs) are a novel class of immunotherapeutics. They are capable of introducing antibodies onto disease-relevant targets such as cancer cells, bacterial cells or viruses. This can induce antibody-mediated immune responses such as antibody-dependent cellular cytotoxicity (ADCC), complement-dependent cytotoxicity (CDC) and antibody-dependent phagocytosis (ADCP), which can kill the pathogen. In contrast to the classic ARMs, multivalent ARMs could offer the advantage of increasing the efficiency of antibody recruitment and subsequent innate immune killing. Such compounds consist of multiple target-binding termini (TBT) and/or antibody-binding termini (ABT). Those multivalent interactions are able to convert low binding affinities into increased binding avidities. This minireview summarizes the current status of multivalent ARMs and gives insight into possible benefits, hurdles still to be overcome and future perspectives.
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Affiliation(s)
- Annemiek Uvyn
- A. Uvyn, Prof. Dr. B. G. De Geest, Department of Pharmaceutics, Ghent University, Ottergemsesteenweg 460, Ghent, Belgium
| | - Bruno G. De Geest
- A. Uvyn, Prof. Dr. B. G. De Geest, Department of Pharmaceutics, Ghent University, Ottergemsesteenweg 460, Ghent, Belgium
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10
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Chen JM. Live unattenuated vaccines for controlling viral diseases, including COVID-19. J Med Virol 2020; 93:1943-1949. [PMID: 32833258 PMCID: PMC7461232 DOI: 10.1002/jmv.26453] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 08/20/2020] [Indexed: 12/15/2022]
Abstract
Live unattenuated vaccines (LUVs) have been neglected for decades, due to widespread prejudice against their safety, even though they have successfully controlled yellow fever and adenovirus infection in humans as well as rinderpest and infectious bursal disease in animals. This review elucidated that LUVs could be highly safe with selective use of neutralizing antivirus antibodies, natural antiglycan antibodies, nonantibody antivirals, and ectopic inoculation. Also, LUVs could be of high efficacy, high development speed, and high production efficiency, with the development of humanized monoclonal antibodies and other modern technologies. They could circumvent antibody-dependent enhancement and maternal-derived antibody interference. With these important advantages, LUVs could be more powerful than other vaccines for controlling some viral diseases, and they warrant urgent investigation with animal experiments and clinical trials for defeating the COVID-19 pandemic caused by the novel coronavirus SARS-CoV-2.
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Affiliation(s)
- Ji-Ming Chen
- School of Life Science and Engineering, Foshan University, Guangdong, China
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11
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Manabe Y, Shimoyama A, Kabayama K, Fukase K. Middle Molecular and Conjugation Strategies for Development of Bioactive Middle Molecules. J SYN ORG CHEM JPN 2020. [DOI: 10.5059/yukigoseikyokaishi.78.527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | | | | | - Koichi Fukase
- Department of Chemistry, Graduate School of Science, Osaka University
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12
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Sasaki K, Harada M, Miyashita Y, Tagawa H, Kishimura A, Mori T, Katayama Y. Fc-binding antibody-recruiting molecules exploit endogenous antibodies for anti-tumor immune responses. Chem Sci 2020; 11:3208-3214. [PMID: 34122826 PMCID: PMC8157400 DOI: 10.1039/d0sc00017e] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Redirecting endogenous antibodies in the bloodstream to tumor cells using synthetic molecules is a promising approach to trigger anti-tumor immune responses. However, current molecular designs only enable the use of a small fraction of endogenous antibodies, limiting the therapeutic potential. Here, we report Fc-binding antibody-recruiting molecules (Fc-ARMs) as the first example addressing this issue. Fc-ARMs are composed of an Fc-binding peptide and a targeting ligand, enabling the exploitation of endogenous antibodies through constant affinity to the Fc region of antibodies, whose sequence is conserved in contrast to the Fab region. We show that Fc-ARM targeting folate receptor-α (FR-α) redirects a clinically used antibody mixture to FR-α+ cancer cells, resulting in cancer cell lysis by natural killer cells in vitro. Fc-ARMs successfully interacted with antibodies in vivo and accumulated in tumors. Furthermore, Fc-ARMs recruited antibodies to suppress tumor growth in a mouse model. Thus, Fc-ARMs have the potential to be a novel class of cancer immunotherapeutic agents. Fc-binding antibody-recruiting molecules provide robust and sufficient opportunities to employ endogenous antibodies for anti-tumor immune responses.![]()
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Affiliation(s)
- Koichi Sasaki
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu University Fukuoka 819-0395 Japan
| | - Minori Harada
- Graduate School of Systems Life Sciences, Kyushu University Fukuoka 819-0395 Japan
| | - Yoshiki Miyashita
- Graduate School of Systems Life Sciences, Kyushu University Fukuoka 819-0395 Japan
| | - Hiroshi Tagawa
- Graduate School of Systems Life Sciences, Kyushu University Fukuoka 819-0395 Japan
| | - Akihiro Kishimura
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu University Fukuoka 819-0395 Japan .,Graduate School of Systems Life Sciences, Kyushu University Fukuoka 819-0395 Japan.,International Research Center for Molecular Systems, Kyushu University Fukuoka 819-0395 Japan
| | - Takeshi Mori
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu University Fukuoka 819-0395 Japan .,Graduate School of Systems Life Sciences, Kyushu University Fukuoka 819-0395 Japan
| | - Yoshiki Katayama
- Department of Applied Chemistry, Graduate School of Engineering, Kyushu University Fukuoka 819-0395 Japan .,Graduate School of Systems Life Sciences, Kyushu University Fukuoka 819-0395 Japan.,International Research Center for Molecular Systems, Kyushu University Fukuoka 819-0395 Japan.,Department of Biomedical Engineering, Chung Yuan Christian University Taoyuan Taiwan
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13
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Tsutsui M, Sianturi J, Masui S, Tokunaga K, Manabe Y, Fukase K. Efficient Synthesis of Antigenic Trisaccharides ContainingN-Acetylglucosamine: Protection of NHAc as NAc2. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901809] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Masato Tsutsui
- Department of Chemistry; Graduate School of Science; Osaka University; Machikaneyama 1-1, Toyonaka 560-0043 Osaka Japan
| | - Julinton Sianturi
- Department of Chemistry; Graduate School of Science; Osaka University; Machikaneyama 1-1, Toyonaka 560-0043 Osaka Japan
| | - Seiji Masui
- Department of Chemistry; Graduate School of Science; Osaka University; Machikaneyama 1-1, Toyonaka 560-0043 Osaka Japan
| | - Kento Tokunaga
- Department of Chemistry; Graduate School of Science; Osaka University; Machikaneyama 1-1, Toyonaka 560-0043 Osaka Japan
| | - Yoshiyuki Manabe
- Department of Chemistry; Graduate School of Science; Osaka University; Machikaneyama 1-1, Toyonaka 560-0043 Osaka Japan
- Core for Medicine and Science Collaborative Research and Education; Project Research Center for Fundamental Science; Osaka University; Osaka Japan
| | - Koichi Fukase
- Department of Chemistry; Graduate School of Science; Osaka University; Machikaneyama 1-1, Toyonaka 560-0043 Osaka Japan
- Core for Medicine and Science Collaborative Research and Education; Project Research Center for Fundamental Science; Osaka University; Osaka Japan
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14
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Liet B, Laigre E, Goyard D, Todaro B, Tiertant C, Boturyn D, Berthet N, Renaudet O. Multifunctional Glycoconjugates for Recruiting Natural Antibodies against Cancer Cells. Chemistry 2019; 25:15508-15515. [PMID: 31613028 PMCID: PMC6916168 DOI: 10.1002/chem.201903327] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 09/05/2019] [Indexed: 01/04/2023]
Abstract
We have developed a fully synthetic and multifunctional antibody-recruiting molecule (ARM) to guide natural antibodies already present in the blood stream against cancer cells without pre-immunization. Our ARM is composed of antibody and tumor binding modules (i.e., ABM and TBM) displaying clustered rhamnose and cyclo-RGD, respectively. By using a stepwise approach, we have first demonstrated the importance of multivalency for efficient recognition with naturel IgM and αv β3 integrin expressing M21 tumor cell line. Once covalently conjugated by click chemistry, we confirmed by flow cytometry and confocal microscopy that the recognition properties of both the ABM and TBM are conserved, and more importantly, that the resulting ARM promotes the formation of a ternary complex between natural IgM and cancer cells, which is required for the stimulation of the cytotoxic immune response in vivo. Due to the efficiency of the synthetic process, a larger diversity of heterovalent ligands could be easily explored by using the same multivalent approach and could open new perspectives in this field.
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Affiliation(s)
- Benjamin Liet
- DCM, UMR 5250Université Grenoble Alpes, CNRS38000GrenobleFrance
| | - Eugénie Laigre
- DCM, UMR 5250Université Grenoble Alpes, CNRS38000GrenobleFrance
| | - David Goyard
- DCM, UMR 5250Université Grenoble Alpes, CNRS38000GrenobleFrance
| | - Biagio Todaro
- DCM, UMR 5250Université Grenoble Alpes, CNRS38000GrenobleFrance
| | - Claire Tiertant
- DCM, UMR 5250Université Grenoble Alpes, CNRS38000GrenobleFrance
| | - Didier Boturyn
- DCM, UMR 5250Université Grenoble Alpes, CNRS38000GrenobleFrance
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15
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Sianturi J, Manabe Y, Li H, Chiu L, Chang T, Tokunaga K, Kabayama K, Tanemura M, Takamatsu S, Miyoshi E, Hung S, Fukase K. Development of α‐Gal–Antibody Conjugates to Increase Immune Response by Recruiting Natural Antibodies. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201812914] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Julinton Sianturi
- Department of Chemistry Graduate School of Science Osaka University 1-1 Machikaneyama-cho, Toyonaka Osaka 560-0043 Japan
| | - Yoshiyuki Manabe
- Department of Chemistry Graduate School of Science Osaka University 1-1 Machikaneyama-cho, Toyonaka Osaka 560-0043 Japan
- Core for Medicine and Science Collaborative Research and Education Project Research Center for Fundamental Science Osaka University Japan
| | - Hao‐Sheng Li
- Department of Chemistry Graduate School of Science Osaka University 1-1 Machikaneyama-cho, Toyonaka Osaka 560-0043 Japan
| | - Li‐Ting Chiu
- Genomics Research Center, Academia Sinica Taiwan
| | - Tsung‐Che Chang
- Department of Chemistry Graduate School of Science Osaka University 1-1 Machikaneyama-cho, Toyonaka Osaka 560-0043 Japan
| | - Kento Tokunaga
- Department of Chemistry Graduate School of Science Osaka University 1-1 Machikaneyama-cho, Toyonaka Osaka 560-0043 Japan
| | - Kazuya Kabayama
- Department of Chemistry Graduate School of Science Osaka University 1-1 Machikaneyama-cho, Toyonaka Osaka 560-0043 Japan
- Core for Medicine and Science Collaborative Research and Education Project Research Center for Fundamental Science Osaka University Japan
| | - Masahiro Tanemura
- Department of Gastroenterological Surgery Osaka Police Hospital Japan
| | - Shinji Takamatsu
- Department of Molecular Biochemistry and Clinical Investigation Graduate school of Medicine Osaka University Japan
| | - Eiji Miyoshi
- Department of Molecular Biochemistry and Clinical Investigation Graduate school of Medicine Osaka University Japan
| | | | - Koichi Fukase
- Department of Chemistry Graduate School of Science Osaka University 1-1 Machikaneyama-cho, Toyonaka Osaka 560-0043 Japan
- Core for Medicine and Science Collaborative Research and Education Project Research Center for Fundamental Science Osaka University Japan
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16
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Sianturi J, Manabe Y, Li H, Chiu L, Chang T, Tokunaga K, Kabayama K, Tanemura M, Takamatsu S, Miyoshi E, Hung S, Fukase K. Development of α‐Gal–Antibody Conjugates to Increase Immune Response by Recruiting Natural Antibodies. Angew Chem Int Ed Engl 2019; 58:4526-4530. [DOI: 10.1002/anie.201812914] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Julinton Sianturi
- Department of Chemistry Graduate School of Science Osaka University 1-1 Machikaneyama-cho, Toyonaka Osaka 560-0043 Japan
| | - Yoshiyuki Manabe
- Department of Chemistry Graduate School of Science Osaka University 1-1 Machikaneyama-cho, Toyonaka Osaka 560-0043 Japan
- Core for Medicine and Science Collaborative Research and Education Project Research Center for Fundamental Science Osaka University Japan
| | - Hao‐Sheng Li
- Department of Chemistry Graduate School of Science Osaka University 1-1 Machikaneyama-cho, Toyonaka Osaka 560-0043 Japan
| | - Li‐Ting Chiu
- Genomics Research Center, Academia Sinica Taiwan
| | - Tsung‐Che Chang
- Department of Chemistry Graduate School of Science Osaka University 1-1 Machikaneyama-cho, Toyonaka Osaka 560-0043 Japan
| | - Kento Tokunaga
- Department of Chemistry Graduate School of Science Osaka University 1-1 Machikaneyama-cho, Toyonaka Osaka 560-0043 Japan
| | - Kazuya Kabayama
- Department of Chemistry Graduate School of Science Osaka University 1-1 Machikaneyama-cho, Toyonaka Osaka 560-0043 Japan
- Core for Medicine and Science Collaborative Research and Education Project Research Center for Fundamental Science Osaka University Japan
| | - Masahiro Tanemura
- Department of Gastroenterological Surgery Osaka Police Hospital Japan
| | - Shinji Takamatsu
- Department of Molecular Biochemistry and Clinical Investigation Graduate school of Medicine Osaka University Japan
| | - Eiji Miyoshi
- Department of Molecular Biochemistry and Clinical Investigation Graduate school of Medicine Osaka University Japan
| | | | - Koichi Fukase
- Department of Chemistry Graduate School of Science Osaka University 1-1 Machikaneyama-cho, Toyonaka Osaka 560-0043 Japan
- Core for Medicine and Science Collaborative Research and Education Project Research Center for Fundamental Science Osaka University Japan
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17
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Li S, Yu B, Wang J, Zheng Y, Zhang H, Walker MJ, Yuan Z, Zhu H, Zhang J, Wang PG, Wang B. Biomarker-Based Metabolic Labeling for Redirected and Enhanced Immune Response. ACS Chem Biol 2018; 13:1686-1694. [PMID: 29792670 DOI: 10.1021/acschembio.8b00350] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Installation of an antibody-recruiting moiety on the surface of disease-relevant cells can lead to the selective destruction of targets by the immune system. Such an approach can be an alternative strategy to traditional chemotherapeutics in cancer therapy and possibly other diseases. Herein we describe the development of a new strategy to selectively label targets with an antibody-recruiting moiety through its covalent and stable installation, complementing existing methods of employing reversible binding. This is achieved through selective delivery of 1,3,4- O-acetyl- N-azidoacetylmannosamine (Ac3ManNAz) to folate receptor-overexpressing cells using an Ac3ManNAz-folate conjugate via a cleavable linker. As such, Ac3ManNAz is converted to cell surface glycan bearing an azido group, which serves as an anchor to introduce l-rhamnose (Rha), a hapten, via a click reaction with aza-dibenzocyclooctyne (DBCO)-Rha. We tested this method in several cell lines including KB, HEK-293, and MCF7 and were able to demonstrate the following: 1) Rha can be selectively installed to the folate receptor overexpressing cell surface and 2) the Rha installed on the target surface can recruit anti-rhamnose (anti-Rha) antibodies, leading to the destruction of target cells via complement-dependent cytotoxicity (CDC) and antibody-dependent cellular phagocytosis (ADCP).
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Affiliation(s)
- Shanshan Li
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia 30303, United States
| | - Bingchen Yu
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia 30303, United States
| | - Jiajia Wang
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia 30303, United States
| | - Yueqin Zheng
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia 30303, United States
| | - Huajie Zhang
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia 30303, United States
- National Glycoengineering Research Center, Shandong Provincial Key Laboratory of Glycochemistry Glycobiology, Shandong University, Jinan, Shandong 250100, People’s Republic of China
| | - Margaret J. Walker
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia 30303, United States
| | - Zhengnan Yuan
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia 30303, United States
| | - He Zhu
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia 30303, United States
| | - Jun Zhang
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia 30303, United States
| | - Peng George Wang
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia 30303, United States
| | - Binghe Wang
- Department of Chemistry and Center for Diagnostics and Therapeutics, Georgia State University, Atlanta, Georgia 30303, United States
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18
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Commins SP, Kim EH, Orgel K, Kulis M. Peanut Allergy: New Developments and Clinical Implications. Curr Allergy Asthma Rep 2016; 16:35. [PMID: 27039393 DOI: 10.1007/s11882-016-0613-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Food allergies have increased in prevalence over the past 20 years, now becoming an important public health concern. Although there are no therapies currently available for routine clinical care, recent reports have indicated that immunotherapies targeting the mucosal immune system may be effective. Oral immunotherapy is conducted by administering small, increasing amounts of food allergen; it has shown promise for desensitizing individuals with peanut, egg, or milk allergies. Sublingual immunotherapy also desensitizes allergic patients to foods-two major studies have examined the effects of sublingual immunotherapy in subjects with peanut allergies. We review the complex nature of IgE-mediated food allergies and the therapies being evaluated in clinical trials. We focus on the diagnosis and management of food allergies and investigational therapies.
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Affiliation(s)
- Scott P Commins
- Department of Medicine, University of North Carolina School of Medicine, Chapel Hill, NC, USA. .,Thurston Arthritis Research Center, Chapel Hill, NC, USA. .,Department of Pediatrics, University of North Carolina School of Medicine, Chapel Hill, NC, USA. .,Department of Medicine, Division of Rheumatology, Allergy and Immunology, University of North Carolina, 3300 Thurston Building, CB 7280, Chapel Hill, NC, 27599-7280, USA.
| | - Edwin H Kim
- Department of Medicine, University of North Carolina School of Medicine, Chapel Hill, NC, USA.,Thurston Arthritis Research Center, Chapel Hill, NC, USA.,Department of Pediatrics, University of North Carolina School of Medicine, Chapel Hill, NC, USA
| | - Kelly Orgel
- Department of Pediatrics, University of North Carolina School of Medicine, Chapel Hill, NC, USA
| | - Mike Kulis
- Department of Pediatrics, University of North Carolina School of Medicine, Chapel Hill, NC, USA
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19
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In Vivo Activation of Human NK Cells by Treatment with an Interleukin-15 Superagonist Potently Inhibits Acute In Vivo HIV-1 Infection in Humanized Mice. J Virol 2015; 89:6264-74. [PMID: 25833053 DOI: 10.1128/jvi.00563-15] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Accepted: 03/27/2015] [Indexed: 11/20/2022] Open
Abstract
UNLABELLED Natural killer (NK) cells with anti-HIV-1 activity may inhibit HIV-1 replication and dissemination during acute HIV-1 infection. We hypothesized that the capacity of NK cells to suppress acute in vivo HIV-1 infection would be augmented by activating them via treatment with an interleukin-15 (IL-15) superagonist, IL-15 bound to soluble IL-15Rα, an approach that potentiates human NK cell-mediated killing of tumor cells. In vitro stimulation of human NK cells with a recombinant IL-15 superagonist significantly induced their expression of the cytotoxic effector molecules granzyme B and perforin; their degranulation upon exposure to K562 cells, as indicated by cell surface expression of CD107a; and their capacity to lyse K562 cells and HIV-1-infected T cells. The impact of IL-15 superagonist-induced activation of human NK cells on acute in vivo HIV-1 infection was investigated by using hu-spl-PBMC-NSG mice, NOD-SCID-IL2rγ(-/-) (NSG) mice intrasplenically injected with human peripheral blood mononuclear cells (PBMCs) which develop productive in vivo infection after intrasplenic inoculation with HIV-1. IL-15 superagonist treatment potently inhibited acute HIV-1 infection in hu-spl-PBMC-NSG mice even when delayed until 3 days after intrasplenic HIV-1 inoculation. Removal of NK cells from human PBMCs prior to intrasplenic injection into NSG mice completely abrogated IL-15 superagonist-mediated suppression of in vivo HIV-1 infection. Thus, the in vivo activation of NK cells, integral mediators of the innate immune response, by treatment with an IL-15 superagonist increases their anti-HIV activity and enables them to potently suppress acute in vivo HIV-1 infection. These results indicate that in vivo activation of NK cells may represent a new immunotherapeutic approach to suppress acute HIV-1 infection. IMPORTANCE Epidemiological studies have indicated that NK cells contribute to the control of HIV-1 infection, and in vitro studies have demonstrated that NK cells can selectively kill HIV-1-infected cells. We demonstrated that in vivo activation of NK cells by treatment with an IL-15 superagonist that potently stimulates the antitumor activity of NK cells markedly inhibited acute HIV-1 infection in humanized mice, even when activation of NK cells by IL-15 superagonist treatment is delayed until 3 days after HIV-1 inoculation. NK cell depletion from PBMCs prior to their intrasplenic injection abrogated the suppression of in vivo HIV-1 infection observed in humanized mice treated with the IL-15 superagonist, demonstrating that activated human NK cells were mediating IL-15 superagonist-induced inhibition of acute HIV-1 infection. Thus, in vivo immunostimulation of NK cells, a promising therapeutic approach for cancer therapy, may represent a new treatment modality for HIV-1-infected individuals, particularly in the earliest stages of infection.
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20
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Jakobsche CE, Parker CG, Tao RN, Kolesnikova MD, Douglass EF, Spiegel DA. Exploring binding and effector functions of natural human antibodies using synthetic immunomodulators. ACS Chem Biol 2013; 8:2404-11. [PMID: 24053626 DOI: 10.1021/cb4004942] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The ability to profile the prevalence and functional activity of endogenous antibodies is of vast clinical and diagnostic importance. Serum antibodies are an important class of biomarkers and are also crucial elements of immune responses elicited by natural disease-causing agents as well as vaccines. In particular, materials for manipulating and/or enhancing immune responses toward disease-causing cells or viruses have exhibited significant promise for therapeutic applications. Antibody-recruiting molecules (ARMs), bifunctional organic molecules that redirect endogenous antibodies to pathological targets, thereby increasing their recognition and clearance by the immune system, have proven particularly interesting. Notably, although ARMs capable of hijacking antibodies against oligosaccharides and electron-poor aromatics have proven efficacious, systematic comparisons of the prevalence and effectiveness of natural anti-hapten antibody populations have not appeared in the literature. Herein we report head-to-head comparisons of three chemically simple antigens, which are known ligands for endogenous antibodies. Thus, we have chemically synthesized bifunctional molecules containing 2,4-dinitrophenyl (DNP), phosphorylcholine (PC), and rhamnose. We have then used a combination of ELISA, flow cytometry, and cell-viability assays to compare these antigens in terms of their abilities both to recruit natural antibody from human serum and also to direct serum-dependent cytotoxicity against target cells. These studies have revealed rhamnose to be the most efficacious of the synthetic antigens examined. Furthermore, analysis of 122 individual serum samples has afforded comprehensive insights into population-wide prevalence and isotype distributions of distinct anti-hapten antibody populations. In addition to providing a general platform for comparing and studying anti-hapten antibodies, these studies serve as a useful starting point for the optimization of antibody-recruiting molecules and other synthetic strategies for modulating human immunity.
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Affiliation(s)
- Charles E. Jakobsche
- Carlson
School of Chemistry and Biochemistry, Clark University, 950 Main
Street, Worcester, Massachusetts 01610, United States
| | - Christopher G. Parker
- The
Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Ran N. Tao
- Department
of Chemistry, Yale University, 225 Prospect Street, P.O. Box 208107, New Haven, Connecticut 06520, United States
| | | | - Eugene F. Douglass
- Department
of Chemistry, Yale University, 225 Prospect Street, P.O. Box 208107, New Haven, Connecticut 06520, United States
| | - David A. Spiegel
- Department
of Chemistry, Yale University, 225 Prospect Street, P.O. Box 208107, New Haven, Connecticut 06520, United States
- Department
of Pharmacology, Yale University School of Medicine, 333 Cedar
Street, New Haven, Connecticut 06510, United States
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21
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Chen E, Paing MM, Salinas N, Sim BKL, Tolia NH. Structural and functional basis for inhibition of erythrocyte invasion by antibodies that target Plasmodium falciparum EBA-175. PLoS Pathog 2013; 9:e1003390. [PMID: 23717209 PMCID: PMC3662668 DOI: 10.1371/journal.ppat.1003390] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2012] [Accepted: 04/15/2013] [Indexed: 02/06/2023] Open
Abstract
Disrupting erythrocyte invasion by Plasmodium falciparum is an attractive approach to combat malaria. P. falciparum EBA-175 (PfEBA-175) engages the host receptor Glycophorin A (GpA) during invasion and is a leading vaccine candidate. Antibodies that recognize PfEBA-175 can prevent parasite growth, although not all antibodies are inhibitory. Here, using x-ray crystallography, small-angle x-ray scattering and functional studies, we report the structural basis and mechanism for inhibition by two PfEBA-175 antibodies. Structures of each antibody in complex with the PfEBA-175 receptor binding domain reveal that the most potent inhibitory antibody, R217, engages critical GpA binding residues and the proposed dimer interface of PfEBA-175. A second weakly inhibitory antibody, R218, binds to an asparagine-rich surface loop. We show that the epitopes identified by structural studies are critical for antibody binding. Together, the structural and mapping studies reveal distinct mechanisms of action, with R217 directly preventing receptor binding while R218 allows for receptor binding. Using a direct receptor binding assay we show R217 directly blocks GpA engagement while R218 does not. Our studies elaborate on the complex interaction between PfEBA-175 and GpA and highlight new approaches to targeting the molecular mechanism of P. falciparum invasion of erythrocytes. The results suggest studies aiming to improve the efficacy of blood-stage vaccines, either by selecting single or combining multiple parasite antigens, should assess the antibody response to defined inhibitory epitopes as well as the response to the whole protein antigen. Finally, this work demonstrates the importance of identifying inhibitory-epitopes and avoiding decoy-epitopes in antibody-based therapies, vaccines and diagnostics. Malaria is a devastating parasitic disease that kills one million people annually. The parasites invade and multiply within red blood cells, leading to the clinical symptoms of malaria. Therefore, preventing red blood cell, entry through vaccines is an attractive approach to controlling the disease. Although widespread efforts to develop a vaccine by identifying and combining critical parasite blood-stage proteins are underway, a protective vaccine for malaria has proved challenging. This is in part because, while parasite proteins have the ability to elicit antibodies that prevent red blood cell invasion, these antibodies are a small proportion compared to the total collection of ineffective antibodies produced. We show an antibody that prevents red blood cell invasion targets regions of the critical parasite protein PfEBA-175 required for red blood cell engagement. We also show that an antibody that does not prevent red blood cell invasion recognizes a region far removed from important functional segments of PfEBA-175. Our work demonstrates that identifying the regions targeted by antibodies, and the mechanisms by which antibodies that prevent invasion function, should drive future vaccine development and studies measuring the effectiveness of current vaccine combinations.
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Affiliation(s)
- Edwin Chen
- Department of Molecular Microbiology, Washington University School of Medicine, Saint Louis, Missouri, United States of America
| | - May M. Paing
- Department of Molecular Microbiology, Washington University School of Medicine, Saint Louis, Missouri, United States of America
| | - Nichole Salinas
- Department of Molecular Microbiology, Washington University School of Medicine, Saint Louis, Missouri, United States of America
| | - B. Kim Lee Sim
- Protein Potential, Rockville, Maryland, United States of America
| | - Niraj H. Tolia
- Department of Molecular Microbiology, Washington University School of Medicine, Saint Louis, Missouri, United States of America
- * E-mail:
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22
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Human serum protein enhances HIV-1 replication and up-regulates the transcription factor AP-1. Proc Natl Acad Sci U S A 2012; 109:17639-44. [PMID: 23047699 DOI: 10.1073/pnas.1206893109] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
In vitro studies on HIV (HIV-1) replication and neutralization are usually performed in human cell cultures supplemented with FBS instead of human serum (HS). Here we show that in contrast to FBS, addition of increasing amounts of human serum from noninfected donors to the cell culture directly correlates with an increase in HIV-1 replication in vitro. This effect is independent of cell line, virus strain, or batch of pooled human serum used. We found that human serum affects viral transcription in a dose-dependent manner by activating the activator protein-1 (AP-1) member proteins c-FOS, JunD, and JunB in TZM-bl cells. Analysis of the human serum component responsible for this effect indicates that it is a protein having a molecular mass between 250 and 300 kDa. This serum protein, HIV-1 enhancing serum protein (HESP), might promote viral transcription in vivo and consequently play a role in disease progression.
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23
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Perdomo MF, Sällberg M, Vahlne A. HIV inhibition by CD4 and CCR5-derived glycopeptides. AIDS Res Hum Retroviruses 2012; 28:1052-8. [PMID: 22559037 DOI: 10.1089/aid.2012.0009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Abstract
We have previously proposed a method by which natural antibodies can be redirected toward a known pathogen. We could show that CD4-derived peptides coupled to the galα1,3gal sugar moiety, a specificity held by natural antibodies, were able to neutralize HIV. Importantly, the antibody-peptide-antigen complexes activated the innate immune system through the Fc parts of the natural antibody. We now tested these peptides for their effectiveness on primary isolates and included sequence variations to increase their binding affinity. In addition, we evaluated three new CCR5-derived peptides. All peptides were tested for neutralization of six primary HIV-1 isolates. When testing three of the previously published glycopeptides we found that 10 to 100 times higher concentrations were needed to achieve the same neutralization of primary isolates. We found that the modifications of the CD4 glycopeptides modestly improved the neutralization of HIV-1. The modified CD4 and the CCR5 glycopeptides neutralized HIV-1 strains from different patients and of different subtypes. Notably, the combination of CD4 and CCR5 glycopeptides enhanced the neutralization potential as compared to the single peptides. A combination of CD4- and CCR5-galα1,3gal-linked peptides redirected natural antibodies to neutralize primary isolates of HIV-1, although less efficiently than laboratory-adapted strains. This might represent a new and valuable tool to block the entry of HIV into susceptible cells.
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Affiliation(s)
- Maria F. Perdomo
- Division of Clinical Microbiology, Karolinska Institutet, Karolinska University Hospital, Huddinge, Sweden
| | - Matti Sällberg
- Division of Clinical Microbiology, Karolinska Institutet, Karolinska University Hospital, Huddinge, Sweden
| | - Anders Vahlne
- Division of Clinical Microbiology, Karolinska Institutet, Karolinska University Hospital, Huddinge, Sweden
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24
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McEnaney PJ, Parker CG, Zhang AX, Spiegel DA. Antibody-recruiting molecules: an emerging paradigm for engaging immune function in treating human disease. ACS Chem Biol 2012; 7:1139-51. [PMID: 22758917 PMCID: PMC3401898 DOI: 10.1021/cb300119g] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Synthetic immunology, the development of synthetic systems capable of modulating and/or manipulating immunological functions, represents an emerging field of research with manifold possibilities. One focus of this area has been to create low molecular weight synthetic species, called antibody-recruiting molecules (ARMs), which are capable of enhancing antibody binding to disease-relevant cells or viruses, thus leading to their immune-mediated clearance. This article provides a thorough discussion of contributions in this area, beginning with the history of small-molecule-based technologies for modulating antibody recognition, followed by a systematic review of the various applications of ARM-based strategies. Thus, we describe ARMs capable of targeting cancer, bacteria, and viral pathogens, along with some of the scientific discoveries that have resulted from their development. Research in this area underscores the many exciting possibilities at the interface of organic chemistry and immunobiology and is positioned to advance both basic and clinical science in the years to come.
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Affiliation(s)
- Patrick J McEnaney
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, United States
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25
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Cui L, Kitov PI, Completo GC, Paulson JC, Bundle DR. Supramolecular complexing of membane Siglec CD22 mediated by a polyvalent heterobifunctional ligand that templates on IgM. Bioconjug Chem 2011; 22:546-50. [PMID: 21405019 DOI: 10.1021/bc100579d] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
We report the synthesis and in vitro evaluation of a multivalent homing device, a polymer which contains preordered pendant groups with dual specificity, a trisaccharide moiety, which is specific for the siglec CD22, and an antibody specific hapten, nitrophenol. The device efficiently attracts antihapten IgM to the surface of human lymphoma B cells as well as to CD22-conjugated magnetic beads by mediating the formation of a ternary complex on the surface of the target.
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Affiliation(s)
- Lina Cui
- Department of Chemistry, Alberta Ingenuity Centre for Carbohydrate Science, University of Alberta , Edmonton, Alberta, Canada
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26
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Zhang AX, Murelli RP, Barinka C, Michel J, Cocleaza A, Jorgensen WL, Lubkowski J, Spiegel DA. A remote arene-binding site on prostate specific membrane antigen revealed by antibody-recruiting small molecules. J Am Chem Soc 2010; 132:12711-6. [PMID: 20726553 PMCID: PMC2965167 DOI: 10.1021/ja104591m] [Citation(s) in RCA: 112] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Prostate specific membrane antigen (PSMA) is a membrane-bound glutamate carboxypeptidase overexpressed in many forms of prostate cancer. Our laboratory has recently disclosed a class of small molecules, called ARM-Ps (antibody-recruiting molecule targeting prostate cancer) that are capable of enhancing antibody-mediated immune recognition of prostate cancer cells. Interestingly, during the course of these studies, we found ARM-Ps to exhibit extraordinarily high potencies toward PSMA, compared to previously reported inhibitors. Here, we report in-depth biochemical, crystallographic, and computational investigations which elucidate the origin of the observed affinity enhancement. These studies reveal a previously unreported arene-binding site on PSMA, which we believe participates in an aromatic stacking interaction with ARMs. Although this site is composed of only a few amino acid residues, it drastically enhances small molecule binding affinity. These results provide critical insights into the design of PSMA-targeted small molecules for prostate cancer diagnosis and treatment; more broadly, the presence of similar arene-binding sites throughout the proteome could prove widely enabling in the optimization of small molecule-protein interactions.
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Affiliation(s)
- Andrew X. Zhang
- Department of Chemistry, Yale University, 225 Prospect Street, PO Box 208107, New Haven, CT 06510-8107 USA
| | - Ryan P. Murelli
- Department of Chemistry, Yale University, 225 Prospect Street, PO Box 208107, New Haven, CT 06510-8107 USA
| | - Cyril Barinka
- Laboratory of Structural Biology, Institute of Biotechnology AS CR,v.v.i., 14200 Prague 4, Czech Republic
| | - Julien Michel
- Department of Chemistry, Yale University, 225 Prospect Street, PO Box 208107, New Haven, CT 06510-8107 USA
| | - Alexandra Cocleaza
- Department of Chemistry, Yale University, 225 Prospect Street, PO Box 208107, New Haven, CT 06510-8107 USA
| | - William L. Jorgensen
- Department of Chemistry, Yale University, 225 Prospect Street, PO Box 208107, New Haven, CT 06510-8107 USA
| | - Jacek Lubkowski
- Macromolecular Crystallography Laboratory, 539 Boyles Street, National Cancer Institute at Frederick, Frederick, MD, 21702, USA
| | - David A. Spiegel
- Department of Chemistry, Yale University, 225 Prospect Street, PO Box 208107, New Haven, CT 06510-8107 USA
- Department of Pharmacology, Yale University School of Medicine, 333 Cedar Street, New Haven, CT 06520 USA
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27
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Murelli RP, Zhang AX, Michel J, Jorgensen WL, Spiegel DA. Chemical control over immune recognition: a class of antibody-recruiting small molecules that target prostate cancer. J Am Chem Soc 2010; 131:17090-2. [PMID: 19888723 DOI: 10.1021/ja906844e] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Prostate cancer is the second leading cause of cancer-related death among the American male population, and society is in dire need of new approaches to treat this disease. Here we report the design, synthesis, and biological evaluation of a class of bifunctional small molecules called antibody-recruiting molecules targeting prostate cancer (ARM-Ps) that enhance the recognition of prostate cancer cells by the human immune system. ARM-P derivatives were designed rationally via the computational analysis of crystallographic data, and we demonstrate here that these materials are able to (1) bind prostate-specific membrane antigen (PSMA) with high affinity (high pM to low nM), (2) template the formation of ternary complexes of anti-DNP antibodies, ARM-P, and LNCaP human prostate cancer cells, and (3) mediate the antibody-dependent killing of LNCaP cells in the presence of human effector cells. This manuscript describes the application of fundamental chemical principles to the design of a novel class of molecules with high therapeutic potential. We believe that this general small-molecule-based strategy could give rise to novel directions in treating cancer and other diseases.
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Affiliation(s)
- Ryan P Murelli
- Department of Chemistry, Yale University, 225 Prospect Street, P.O. Box 208107, New Haven, Connecticut 06520-8107, USA
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28
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Parker CG, Domaoal RA, Anderson KS, Spiegel DA. An antibody-recruiting small molecule that targets HIV gp120. J Am Chem Soc 2009; 131:16392-4. [PMID: 19839582 PMCID: PMC2783809 DOI: 10.1021/ja9057647] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
HIV/AIDS is a global pandemic for which new treatment strategies are desperately needed. We have designed a novel small molecule, designated as ARM-H, that has the potential to interfere with HIV survival through two mechanisms: (1) by recruiting antibodies to gp120-expressing virus particles and infected human cells, thus enhancing their uptake and destruction by the human immune system, and (2) by binding the viral glycoprotein gp120, inhibiting its interaction with the human protein CD4 and preventing virus entry. Here we demonstrate that ARM-H is capable of simultaneously binding gp120, a component of the Env surface viral glycoprotein (found on the surface of both HIV and virus-infected cells) and anti-2,4-dinitrophenyl antibodies (already present in the human bloodstream). The ternary complex formed between the antibody, ARM-H, and gp120 is immunologically active and leads to the complement-mediated destruction of Env-expressing cells. Furthermore, ARM-H prevents virus entry into human T-cells and should therefore be capable of inhibiting virus replication through two mutually reinforcing mechanisms (inhibition of virus entry and antibody-mediated killing). These studies demonstrate the viable anti-HIV activity of antibody-recruiting small molecules and have the potential to initiate novel paradigms in HIV treatment.
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Affiliation(s)
- Christopher G. Parker
- Department of Chemistry, Yale University, 225 Prospect Street, PO Box 208107, New Haven, CT 06520-8107
| | - Robert A. Domaoal
- Department of Pharmacology, Yale University School of Medicine, 333 Cedar Street, SHM B350B, New Haven, CT 06520
| | - Karen S. Anderson
- Department of Pharmacology, Yale University School of Medicine, 333 Cedar Street, SHM B350B, New Haven, CT 06520
| | - David A. Spiegel
- Department of Chemistry, Yale University, 225 Prospect Street, PO Box 208107, New Haven, CT 06520-8107
- Department of Pharmacology, Yale University School of Medicine, 333 Cedar Street, SHM B350B, New Haven, CT 06520
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29
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Li H, Xu CF, Blais S, Wan Q, Zhang HT, Landry SJ, Hioe CE. Proximal glycans outside of the epitopes regulate the presentation of HIV-1 envelope gp120 helper epitopes. THE JOURNAL OF IMMUNOLOGY 2009; 182:6369-78. [PMID: 19414790 DOI: 10.4049/jimmunol.0804287] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Glycosylation of HIV-1 envelope gp120 determines not only the proper structure, but also the immune responses against this Ag. Although glycans may be part of specific epitopes or shield other epitopes from T cells and Abs, this study provides evidence for a different immunomodulatory function of glycans associated with gp120 residues N230 and N448. These glycans are required for efficient MHC class II-restricted presentation of nearby CD4 T cell epitopes, even though they are not part of the epitopes. The glycans do not affect CD4 T cell recognition of more distant epitopes and are not essential for the proper folding and function of gp120. Data on CD4 T cell recognition of N448 mutants combined with proteolysis analyses and surface electrostatic potential calculation around residue N448 support the notion that N448 glycan near the epitope's C terminus renders the site to be surface accessible and allows its efficient processing. In contrast, the N230 glycan contributes to the nearby epitope presentation at a step other than the proteolytic processing of the epitope. Hence, N-glycans can determine CD4 T cell recognition of nearby gp120 epitopes by regulating the different steps in the MHC class II processing and presentation pathway after APCs acquire the intact gp120 Ag exogenously. Modifications of amino acids bearing glycans at the C termini of gp120 helper epitopes may prove to be a useful strategy for enhancing the immunogenicity of HIV-1 envelope gp120.
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Affiliation(s)
- Hualin Li
- Department of Veterans Affairs, New York Harbor Healthcare System, New York, NY, USA
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