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Wang W, Meng X, Cui H, Zhang C, Wang S, Feng N, Zhao Y, Wang T, Yan F, Xia X. Self-assembled ferritin-based nanoparticles elicit a robust broad-spectrum protective immune response against SARS-CoV-2 variants. Int J Biol Macromol 2024; 264:130820. [PMID: 38484812 DOI: 10.1016/j.ijbiomac.2024.130820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 03/03/2024] [Accepted: 03/10/2024] [Indexed: 03/17/2024]
Abstract
The coronavirus disease 2019 (COVID-19) pandemic caused by severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) and its variants has resulted in global economic losses and posed a threat to human health. The pandemic highlights the urgent need for an efficient, easily producible, and broad-spectrum vaccine. Here, we present a potentially universal strategy for the rapid and general design of vaccines, focusing on the design and testing of omicron BA.5 RBD-conjugated self-assembling ferritin nanoparticles (NPs). The covalent bonding of RBD-Fc to protein A-ferritin was easily accomplished through incubation, resulting in fully multivalent RBD-conjugated NPs that exhibited high structural uniformity, stability, and efficient assembly. The ferritin nanoparticle vaccine synergistically stimulated the innate immune response, Tfh-GCB-plasma cell-mediated activation of humoral immunity and IFN-γ-driven cellular immunity. This nanoparticle vaccine induced a high level of cross-neutralizing responses and protected golden hamsters challenged with multiple mutant strains from infection-induced clinical disease, providing a promising strategy for broad-spectrum vaccine development for SARS-CoV-2 prophylaxis. In conclusion, the nanoparticle conjugation platform holds promise for its potential universality and competitive immunization efficacy and is expected to facilitate the rapid manufacturing and broad application of next-generation vaccines.
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Affiliation(s)
- Weiqi Wang
- College of Veterinary Medicine, Jilin University, Changchun 130062, Jilin, China; Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun 130122, Jilin, China
| | - Xianyong Meng
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun 130122, Jilin, China; College of Veterinary Medicine, Jilin Agricultural University, Changchun 130118, Jilin, China
| | - Huan Cui
- College of Veterinary Medicine, Hebei Agricultural University, 2596 Lucky South Street, Baoding 071000, China
| | - Cheng Zhang
- College of Veterinary Medicine, Hebei Agricultural University, 2596 Lucky South Street, Baoding 071000, China
| | - Shen Wang
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun 130122, Jilin, China
| | - Na Feng
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun 130122, Jilin, China
| | - Yongkun Zhao
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun 130122, Jilin, China
| | - Tiecheng Wang
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun 130122, Jilin, China
| | - Feihu Yan
- Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun 130122, Jilin, China.
| | - Xianzhu Xia
- College of Veterinary Medicine, Jilin University, Changchun 130062, Jilin, China; Key Laboratory of Jilin Province for Zoonosis Prevention and Control, Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun 130122, Jilin, China.
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Sun Y, Li Q, Luo Y, Zhu H, Xu F, Lu H, Yao P, Wang Z, Zhao W, Zhou Z. Development of an RBD-Fc fusion vaccine for COVID-19. Vaccine X 2024; 16:100444. [PMID: 38327768 PMCID: PMC10847155 DOI: 10.1016/j.jvacx.2024.100444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 01/16/2024] [Accepted: 01/18/2024] [Indexed: 02/09/2024] Open
Abstract
Although the global pandemic of SARS-CoV-2 has passed, there are still regional outbreaks that continue to jeopardize human health. Hence, there is still a great deal of interest in developing an efficient vaccine that can quickly and effectively prevent reemerging outbreaks of SARS-CoV-2. Delta variant was once a dominant strain in the world in 2021, and we first constructed a recombinant RBDdelta-Fc fusion vaccine by coupling the RBD of Delta variant with the human Fc fragment. This Fc fusion strategy increases the immunogenicity of the recombinant RBD vaccine, with a long-lasting high level of IgG antibodies and neutralizing antibodies induced by RBDdelta-Fc vaccine. This RBDdelta-Fc vaccine, as well as the RBD-Fc vaccine prepared in our previously study, could trigger a durable immune effect by the heterologous boosting immunity, and the RBD-Fc induced a quicker humoral immune response than the homologous immunization with inactivated vaccines. In conclusion, the Fc fusion strategy has a significant role in enhancing the immunogenicity of recombinant protein vaccines, thus promising the development of a safe and efficient vaccine for the heterologous boosting against SARS-CoV-2.
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Affiliation(s)
- Yisheng Sun
- Innovation Institute for Artificial Intelligence in Medicine and Zhejiang Provincial Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
- Key Lab of Vaccine, Prevention and Control of Infectious Disease of Zhejiang Province, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310015, China
| | - Qiaomin Li
- Innovation Institute for Artificial Intelligence in Medicine and Zhejiang Provincial Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yuanyuan Luo
- Innovation Institute for Artificial Intelligence in Medicine and Zhejiang Provincial Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Hanping Zhu
- Key Lab of Vaccine, Prevention and Control of Infectious Disease of Zhejiang Province, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310015, China
| | - Fang Xu
- Key Lab of Vaccine, Prevention and Control of Infectious Disease of Zhejiang Province, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310015, China
| | - Hangjing Lu
- Key Lab of Vaccine, Prevention and Control of Infectious Disease of Zhejiang Province, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310015, China
| | - Pingping Yao
- Key Lab of Vaccine, Prevention and Control of Infectious Disease of Zhejiang Province, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310015, China
| | - Zhen Wang
- Key Lab of Vaccine, Prevention and Control of Infectious Disease of Zhejiang Province, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310015, China
| | - Wenbin Zhao
- Innovation Institute for Artificial Intelligence in Medicine and Zhejiang Provincial Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Zhan Zhou
- Innovation Institute for Artificial Intelligence in Medicine and Zhejiang Provincial Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
- The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, 322000, China
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Serum Fc-Mediated Monocyte Phagocytosis Activity Is Stable for Several Months after SARS-CoV-2 Asymptomatic and Mildly Symptomatic Infection. Microbiol Spectr 2022; 10:e0183722. [PMID: 36374040 PMCID: PMC9769986 DOI: 10.1128/spectrum.01837-22] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
We investigated the temporal profile of multiple components of the serological response after asymptomatic or mildly symptomatic SARS-CoV-2 infection, in a cohort of 67 previously SARS-CoV-2 naive young adults, up to 8.5 months after infection. We found a significant decrease of spike IgG and neutralization antibody titers from early (11 to 56 days) to late (4 to 8.5 months) time points postinfection. Over the study period, S1-specific IgG levels declined significantly faster than that of the S2-specific IgG. Further, serum antibodies from PCR-confirmed participants cross-recognized S2, but not S1, of the betacoronaviruses HKU1 and OC43, suggesting a greater degree of cross-reactivity of S2 among betacoronaviruses. Antibody-Dependent Natural Killer cell Activation (ADNKA) was detected at the early time point but significantly decreased at the late time point. Induction of serum Antibody-Dependent Monocyte Phagocytosis (ADMP) was detected in all the infected participants, and its levels remained stable over time. Additionally, a reduced percentage of participants had detectable neutralizing activity against the Beta (50%), Gamma (61 to 67%), and Delta (90 to 94%) variants, both early and late postinfection, compared to the ancestral strain (100%). Antibody binding to S1 and RBD of Beta, Gamma, Delta (1.7 to 2.3-fold decrease), and Omicron (10 to 16-fold decrease) variants was also significantly reduced compared to the ancestral SARS-CoV-2 strain. Overall, we found variable temporal profiles of specific components and functionality of the serological response to SARS-CoV-2 in young adults, which is characterized by lasting, but decreased, neutralizing activity and antibody binding to S1, stable ADMP activity, and relatively stable S2-specific IgG levels. IMPORTANCE Adaptive immunity mediated by antibodies is important for controlling SARS-CoV-2 infection. While vaccines against COVID-19 are currently widely distributed, a high proportion of the global population is still unvaccinated. Therefore, understanding the dynamics and maintenance of the naive humoral immune response to SARS-CoV-2 is of great importance. In addition, long-term responses after asymptomatic infection are not well-characterized, given the challenges in identifying such cases. Here, we investigated the longitudinal humoral profile in a well-characterized cohort of young adults with documented asymptomatic or mildly symptomatic SARS-CoV-2 infection. By analyzing samples collected preinfection, early after infection and during late convalescence, we found that, while neutralizing activity decreased over time, high levels of serum S2 IgG and Antibody-Dependent Monocyte Phagocytosis (ADMP) activity were maintained up to 8.5 months after infection. This suggests that a subset of antibodies with specific functions could contribute to long-term protection against SARS-CoV-2 in convalescent unvaccinated individuals.
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Luo D, Pan H, He P, Yang X, Li T, Ning N, Fang X, Yu W, Wei M, Gao H, Wang X, Gu H, Mei M, Li X, Zhang L, Li D, Gao C, Gao J, Fei G, Li Y, Yang Y, Xu Y, Wei W, Sun Y, Zhu F, Hu Z, Wang H. A randomized, double-blind, placebo-controlled phase 1 and phase 2 clinical trial to evaluate efficacy and safety of a SARS-CoV-2 vaccine SCoK in adults. Clin Transl Med 2022; 12:e1016. [PMID: 36103390 PMCID: PMC9473350 DOI: 10.1002/ctm2.1016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 07/27/2022] [Accepted: 08/03/2022] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND To determine an appropriate dose of, and immunization schedule for, a vaccine SCoK against COVID-19 for an efficacy study; herein, we conducted randomized controlled trials to assess the immunogenicity and safety of this vaccine in adults. METHODS These randomized, double-blind, placebo-controlled phase 1 and 2 trials of vaccine SCoK were conducted in Binhai District, Yan City, Jiangsu Province, China. Younger and older adult participants in phase 1 and 2 trials were sequentially recruited into different groups to be intramuscularly administered 20 or 40 μg vaccine SCoK or placebo. Participants were enrolled into our phase 1 and 2 studies to receive vaccine or placebo. RESULTS No serious vaccine-related adverse events were observed in either trial. In both trials, local and systemic adverse reactions were absent or mild in most participants. In our phase 1 and 2 studies, the vaccine induced significantly increased neutralizing antibody responses to pseudovirus and live SARS-CoV-2. The vaccine induced significant neutralizing antibody responses to live SARS-CoV-2 on day 14 after the last immunization, with NT50s of 80.45 and 92.46 in participants receiving 20 and 40 μg doses, respectively; the seroconversion rates were 95.83% and 100%. The vaccine SCoK showed a similar safety and immunogenicity profiles in both younger participants and older participants. The vaccine showed better immunogenicity in phase 2 than in phase 1 clinical trial. Additionally, the incidence of adverse reactions decreased significantly in phase 2 clinical trial. The vaccine SCoK was well tolerated and immunogenic.
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Affiliation(s)
- Deyan Luo
- State Key Laboratory of Pathogen and BiosecurityBeijing Institute of Microbiology and EpidemiologyBeijingChina
| | - Hongxing Pan
- NHC Key Laboratory of Enteric Pathogenic MicrobiologyJiangsu Provincial Center for Disease Control and PreventionNanjingChina
| | - Peng He
- National Institute for Food and Drug ControlBeijingChina
| | - Xiaolan Yang
- State Key Laboratory of Pathogen and BiosecurityBeijing Institute of Microbiology and EpidemiologyBeijingChina
| | - Tao Li
- State Key Laboratory of Pathogen and BiosecurityBeijing Institute of Microbiology and EpidemiologyBeijingChina
| | - Nianzhi Ning
- State Key Laboratory of Pathogen and BiosecurityBeijing Institute of Microbiology and EpidemiologyBeijingChina
| | - Xin Fang
- National Institute for Food and Drug ControlBeijingChina
| | - Wenjing Yu
- State Key Laboratory of Pathogen and BiosecurityBeijing Institute of Microbiology and EpidemiologyBeijingChina
| | - Mingwei Wei
- NHC Key Laboratory of Enteric Pathogenic MicrobiologyJiangsu Provincial Center for Disease Control and PreventionNanjingChina
| | - Hui Gao
- ZHONGYIANKE Biotech Co. LTDTianjinChina
| | - Xin Wang
- ZHONGYIANKE Biotech Co. LTDTianjinChina
| | - Hongjing Gu
- State Key Laboratory of Pathogen and BiosecurityBeijing Institute of Microbiology and EpidemiologyBeijingChina
| | - Maodong Mei
- Binhai Center for Disease Control and PreventionYan CityChina
| | | | - Liangyan Zhang
- State Key Laboratory of Pathogen and BiosecurityBeijing Institute of Microbiology and EpidemiologyBeijingChina
| | - Deyu Li
- State Key Laboratory of Pathogen and BiosecurityBeijing Institute of Microbiology and EpidemiologyBeijingChina
| | | | | | | | - Ying Li
- ZHONGYIANKE Biotech Co. LTDTianjinChina
| | | | - Yi Xu
- ZHONGYIANKE Biotech Co. LTDTianjinChina
| | | | - Yansong Sun
- State Key Laboratory of Pathogen and BiosecurityBeijing Institute of Microbiology and EpidemiologyBeijingChina
| | - Fengcai Zhu
- NHC Key Laboratory of Enteric Pathogenic MicrobiologyJiangsu Provincial Center for Disease Control and PreventionNanjingChina
| | - Zhongyu Hu
- National Institute for Food and Drug ControlBeijingChina
| | - Hui Wang
- State Key Laboratory of Pathogen and BiosecurityBeijing Institute of Microbiology and EpidemiologyBeijingChina
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5
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Persistence of Virus-Specific Antibody after Depletion of Memory B Cells. J Virol 2022; 96:e0002622. [DOI: 10.1128/jvi.00026-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Following vaccination or primary virus infection, virus-specific antibodies provide the first line of defense against reinfection. Plasma cells residing in the bone marrow constitutively secrete antibodies, are long-lived, and can thus maintain serum antibody levels over extended periods of time in the absence of antigen.
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6
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Wieland A, Patel MR, Cardenas MA, Eberhardt CS, Hudson WH, Obeng RC, Griffith CC, Wang X, Chen ZG, Kissick HT, Saba NF, Ahmed R. Defining HPV-specific B cell responses in patients with head and neck cancer. Nature 2021; 597:274-278. [PMID: 33208941 PMCID: PMC9462833 DOI: 10.1038/s41586-020-2931-3] [Citation(s) in RCA: 120] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Accepted: 07/23/2020] [Indexed: 02/07/2023]
Abstract
Tumours often contain B cells and plasma cells but the antigen specificity of these intratumoral B cells is not well understood1-8. Here we show that human papillomavirus (HPV)-specific B cell responses are detectable in samples from patients with HPV-positive head and neck cancers, with active production of HPV-specific IgG antibodies in situ. HPV-specific antibody secreting cells (ASCs) were present in the tumour microenvironment, with minimal bystander recruitment of influenza-specific cells, suggesting a localized and antigen-specific ASC response. HPV-specific ASC responses correlated with titres of plasma IgG and were directed against the HPV proteins E2, E6 and E7, with the most dominant response against E2. Using intratumoral B cells and plasma cells, we generated several HPV-specific human monoclonal antibodies, which exhibited a high degree of somatic hypermutation, consistent with chronic antigen exposure. Single-cell RNA sequencing analyses detected activated B cells, germinal centre B cells and ASCs within the tumour microenvironment. Compared with the tumour parenchyma, B cells and ASCs were preferentially localized in the tumour stroma, with well-formed clusters of activated B cells indicating ongoing germinal centre reactions. Overall, we show that antigen-specific activated and germinal centre B cells as well as plasma cells can be found in the tumour microenvironment. Our findings provide a better understanding of humoral immune responses in human cancer and suggest that tumour-infiltrating B cells could be harnessed for the development of therapeutic agents.
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Affiliation(s)
- Andreas Wieland
- Emory Vaccine Center, Emory University School of Medicine, Atlanta, GA, USA,Department of Microbiology & Immunology, Emory University School of Medicine, Atlanta, GA, USA,corresponding authors: Material requests and correspondence should be directed to Rafi Ahmed () or Andreas Wieland ()
| | - Mihir R. Patel
- Department of Otolaryngology, Emory University School of Medicine, Atlanta, GA, USA,Winship Cancer Institute of Emory University, Atlanta, GA, USA
| | - Maria A. Cardenas
- Department of Urology, Emory University School of Medicine, Atlanta, GA, USA
| | - Christiane S. Eberhardt
- Emory Vaccine Center, Emory University School of Medicine, Atlanta, GA, USA,Department of Microbiology & Immunology, Emory University School of Medicine, Atlanta, GA, USA
| | - William H. Hudson
- Emory Vaccine Center, Emory University School of Medicine, Atlanta, GA, USA,Department of Microbiology & Immunology, Emory University School of Medicine, Atlanta, GA, USA
| | - Rebecca C. Obeng
- Emory Vaccine Center, Emory University School of Medicine, Atlanta, GA, USA,Department of Microbiology & Immunology, Emory University School of Medicine, Atlanta, GA, USA,Department of Pathology, Emory University School of Medicine, Atlanta, GA, USA
| | - Christopher C. Griffith
- Winship Cancer Institute of Emory University, Atlanta, GA, USA,Department of Pathology, Emory University School of Medicine, Atlanta, GA, USA
| | - Xu Wang
- Department of Hematology & Medical Oncology, Emory University School of Medicine, Atlanta, GA, USA
| | - Zhuo G. Chen
- Department of Hematology & Medical Oncology, Emory University School of Medicine, Atlanta, GA, USA
| | - Haydn T. Kissick
- Emory Vaccine Center, Emory University School of Medicine, Atlanta, GA, USA,Department of Microbiology & Immunology, Emory University School of Medicine, Atlanta, GA, USA,Winship Cancer Institute of Emory University, Atlanta, GA, USA,Department of Urology, Emory University School of Medicine, Atlanta, GA, USA
| | - Nabil F. Saba
- Winship Cancer Institute of Emory University, Atlanta, GA, USA,Department of Hematology & Medical Oncology, Emory University School of Medicine, Atlanta, GA, USA
| | - Rafi Ahmed
- Emory Vaccine Center, Emory University School of Medicine, Atlanta, GA, USA,Department of Microbiology & Immunology, Emory University School of Medicine, Atlanta, GA, USA,Winship Cancer Institute of Emory University, Atlanta, GA, USA,corresponding authors: Material requests and correspondence should be directed to Rafi Ahmed () or Andreas Wieland ()
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7
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Elia U, Ramishetti S, Rosenfeld R, Dammes N, Bar-Haim E, Naidu GS, Makdasi E, Yahalom-Ronen Y, Tamir H, Paran N, Cohen O, Peer D. Design of SARS-CoV-2 hFc-Conjugated Receptor-Binding Domain mRNA Vaccine Delivered via Lipid Nanoparticles. ACS NANO 2021; 15:9627-9637. [PMID: 33480671 PMCID: PMC7860138 DOI: 10.1021/acsnano.0c10180] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Accepted: 01/21/2021] [Indexed: 05/20/2023]
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has been identified as the causal agent of COVID-19 and stands at the center of the current global human pandemic, with death toll exceeding one million. The urgent need for a vaccine has led to the development of various immunization approaches. mRNA vaccines represent a cell-free, simple, and rapid platform for immunization, and therefore have been employed in recent studies toward the development of a SARS-CoV-2 vaccine. Herein, we present the design of an mRNA vaccine, based on lipid nanoparticles (LNPs)-encapsulated SARS-CoV-2 human Fc-conjugated receptor-binding domain (RBD-hFc). Several ionizable lipids have been evaluated in vivo in a luciferase (luc) mRNA reporter assay, and two leading LNPs formulations have been chosen for the subsequent RBD-hFc mRNA vaccine strategy. Intramuscular administration of LNP RBD-hFc mRNA elicited robust humoral response, a high level of neutralizing antibodies and a Th1-biased cellular response in BALB/c mice. The data in the current study demonstrate the potential of these lipids as promising candidates for LNP-based mRNA vaccines in general and for a COVID19 vaccine in particular.
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Affiliation(s)
- Uri Elia
- Laboratory of Precision NanoMedicine, Shmunis School
for Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences,
Tel Aviv University, Tel Aviv 69978,
Israel
- Center for Nanoscience and Nanotechnology,
Tel Aviv University, Tel Aviv 69978,
Israel
- Department of Materials Sciences and Engineering, Iby
and Aladar Fleischman Faculty of Engineering, Tel Aviv
University, Tel Aviv 69978, Israel
- Cancer Biology Research Center, Tel Aviv
University, Tel Aviv 69978, Israel
- Department of Biochemistry and Molecular Genetics,
Israel Institute for Biological Research, Ness-Ziona 76100,
Israel
| | - Srinivas Ramishetti
- Laboratory of Precision NanoMedicine, Shmunis School
for Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences,
Tel Aviv University, Tel Aviv 69978,
Israel
- Center for Nanoscience and Nanotechnology,
Tel Aviv University, Tel Aviv 69978,
Israel
- Department of Materials Sciences and Engineering, Iby
and Aladar Fleischman Faculty of Engineering, Tel Aviv
University, Tel Aviv 69978, Israel
- Cancer Biology Research Center, Tel Aviv
University, Tel Aviv 69978, Israel
| | - Ronit Rosenfeld
- Department of Biochemistry and Molecular Genetics,
Israel Institute for Biological Research, Ness-Ziona 76100,
Israel
| | - Niels Dammes
- Laboratory of Precision NanoMedicine, Shmunis School
for Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences,
Tel Aviv University, Tel Aviv 69978,
Israel
- Center for Nanoscience and Nanotechnology,
Tel Aviv University, Tel Aviv 69978,
Israel
- Department of Materials Sciences and Engineering, Iby
and Aladar Fleischman Faculty of Engineering, Tel Aviv
University, Tel Aviv 69978, Israel
- Cancer Biology Research Center, Tel Aviv
University, Tel Aviv 69978, Israel
| | - Erez Bar-Haim
- Department of Biochemistry and Molecular Genetics,
Israel Institute for Biological Research, Ness-Ziona 76100,
Israel
| | - Gonna Somu Naidu
- Laboratory of Precision NanoMedicine, Shmunis School
for Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences,
Tel Aviv University, Tel Aviv 69978,
Israel
- Center for Nanoscience and Nanotechnology,
Tel Aviv University, Tel Aviv 69978,
Israel
- Department of Materials Sciences and Engineering, Iby
and Aladar Fleischman Faculty of Engineering, Tel Aviv
University, Tel Aviv 69978, Israel
- Cancer Biology Research Center, Tel Aviv
University, Tel Aviv 69978, Israel
| | - Efi Makdasi
- Department of Infectious Diseases, Israel
Institute for Biological Research, Ness-Ziona 76100,
Israel
| | - Yfat Yahalom-Ronen
- Department of Infectious Diseases, Israel
Institute for Biological Research, Ness-Ziona 76100,
Israel
| | - Hadas Tamir
- Department of Infectious Diseases, Israel
Institute for Biological Research, Ness-Ziona 76100,
Israel
| | - Nir Paran
- Department of Infectious Diseases, Israel
Institute for Biological Research, Ness-Ziona 76100,
Israel
| | - Ofer Cohen
- Department of Biochemistry and Molecular Genetics,
Israel Institute for Biological Research, Ness-Ziona 76100,
Israel
| | - Dan Peer
- Laboratory of Precision NanoMedicine, Shmunis School
for Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences,
Tel Aviv University, Tel Aviv 69978,
Israel
- Center for Nanoscience and Nanotechnology,
Tel Aviv University, Tel Aviv 69978,
Israel
- Department of Materials Sciences and Engineering, Iby
and Aladar Fleischman Faculty of Engineering, Tel Aviv
University, Tel Aviv 69978, Israel
- Cancer Biology Research Center, Tel Aviv
University, Tel Aviv 69978, Israel
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8
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Recombinant vaccine containing an RBD-Fc fusion induced protection against SARS-CoV-2 in nonhuman primates and mice. Cell Mol Immunol 2021; 18:1070-1073. [PMID: 33731916 PMCID: PMC7966917 DOI: 10.1038/s41423-021-00658-z] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Accepted: 02/09/2021] [Indexed: 11/08/2022] Open
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9
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Jun JI, Lau LF. CCN1 is an opsonin for bacterial clearance and a direct activator of Toll-like receptor signaling. Nat Commun 2020; 11:1242. [PMID: 32144270 PMCID: PMC7060279 DOI: 10.1038/s41467-020-15075-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 02/17/2020] [Indexed: 12/30/2022] Open
Abstract
Expression of the matricellular protein CCN1 (CYR61) is associated with inflammation and is required for successful wound repair. Here, we show that CCN1 binds bacterial pathogen-associated molecular patterns including peptidoglycans of Gram-positive bacteria and lipopolysaccharides of Gram-negative bacteria. CCN1 opsonizes methicillin-resistant Staphylococcus aureus (MRSA) and Pseudomonas aeruginosa and accelerates their removal by phagocytosis and increased production of bactericidal reactive oxygen species in macrophages through the engagement of integrin αvβ3. Mice with myeloid-specific Ccn1 deletion and knock-in mice expressing CCN1 unable to bind αvβ3 are more susceptible to infection by S. aureus or P. aeruginosa, resulting in increased mortality and organ colonization. Furthermore, CCN1 binds directly to TLR2 and TLR4 to activate MyD88-dependent signaling, cytokine expression and neutrophil mobilization. CCN1 is therefore a pattern recognition receptor that opsonizes bacteria for clearance and functions as a damage-associated molecular pattern to activate inflammatory responses, activities that contribute to wound healing and tissue repair. CCN1 is a matricellular protein with a variety of functions, including an effect on wound healing and an association with inflammation. Here, the authors identify a possible mechanism by showing that CCN1 mediates the clearance of bacterial infections in mice and activates TLR signalling.
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Affiliation(s)
- Joon-Il Jun
- Department of Biochemistry and Molecular Genetics, College of Medicine, The University of Illinois at Chicago, 900 South Ashland Avenue, Chicago, IL, 60607, USA
| | - Lester F Lau
- Department of Biochemistry and Molecular Genetics, College of Medicine, The University of Illinois at Chicago, 900 South Ashland Avenue, Chicago, IL, 60607, USA.
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