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Lee IJ, Lan YH, Wu PY, Wu YW, Chen YH, Tseng SC, Kuo TJ, Sun CP, Jan JT, Ma HH, Liao CC, Liang JJ, Ko HY, Chang CS, Liu WC, Ko YA, Chen YH, Sie ZL, Tsung SI, Lin YL, Wang IH, Tao MH. A receptor-binding domain-based nanoparticle vaccine elicits durable neutralizing antibody responses against SARS-CoV-2 and variants of concern. Emerg Microbes Infect 2023; 12:2149353. [PMID: 36395071 PMCID: PMC9793938 DOI: 10.1080/22221751.2022.2149353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Numerous vaccines have been developed to address the current COVID-19 pandemic, but safety, cross-neutralizing efficacy, and long-term protectivity of currently approved vaccines are still important issues. In this study, we developed a subunit vaccine, ASD254, by using a nanoparticle vaccine platform to encapsulate the SARS-CoV-2 spike receptor-binding domain (RBD) protein. As compared with the aluminum-adjuvant RBD vaccine, ASD254 induced higher titers of RBD-specific antibodies and generated 10- to 30-fold more neutralizing antibodies. Mice vaccinated with ASD254 showed protective immune responses against SARS-CoV-2 challenge, with undetectable infectious viral loads and reduced typical lesions in lung. Besides, neutralizing antibodies in vaccinated mice lasted for at least one year and were effective against various SARS-CoV-2 variants of concern, including B.1.1.7 (Alpha), B.1.351 (Beta), P.1 (Gamma), B.1.617.2 (Delta), and B.1.1.529 (Omicron). Furthermore, particle size, polydispersity index, and zeta-potential of ASD254 remained stable after 8-month storage at 4°C. Thus, ASD254 is a promising nanoparticle vaccine with good immunogenicity and stability to be developed as an effective vaccine option in controlling upcoming waves of COVID-19.
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Affiliation(s)
- I-Jung Lee
- Graduate Institute of Microbiology, College of Medicine, National Taiwan University, Taipei, Taiwan,Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Yu-Hua Lan
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Ping-Yi Wu
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Yan-Wei Wu
- School of Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yu-Hung Chen
- School of Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Sheng-Che Tseng
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Tzu-Jiun Kuo
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Cheng-Pu Sun
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Jia-Tsrong Jan
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Hsiu-Hua Ma
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Chun-Che Liao
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Jian-Jong Liang
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Hui-Ying Ko
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Chih-Shin Chang
- Biomedical Translation Research Center, Academia Sinica, Taipei, Taiwan
| | - Wen-Chun Liu
- Biomedical Translation Research Center, Academia Sinica, Taipei, Taiwan
| | - Yi-An Ko
- Biomedical Translation Research Center, Academia Sinica, Taipei, Taiwan
| | - Yen-Hui Chen
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Zong-Lin Sie
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Szu-I Tsung
- Graduate Institute of Microbiology, College of Medicine, National Taiwan University, Taipei, Taiwan,Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Yi-Ling Lin
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan,Biomedical Translation Research Center, Academia Sinica, Taipei, Taiwan
| | - I-Hsuan Wang
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Mi-Hua Tao
- Graduate Institute of Microbiology, College of Medicine, National Taiwan University, Taipei, Taiwan,Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan,Biomedical Translation Research Center, Academia Sinica, Taipei, Taiwan, Mi-Hua Tao Graduate Institute of Microbiology, College of Medicine, National Taiwan University, Taipei 100, Taiwan; Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan; Biomedical Translation Research Center, Academia Sinica, Taipei115, Taiwan
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Sun CP, Chiu CW, Wu PY, Tsung SI, Lee IJ, Hu CW, Hsu MF, Kuo TJ, Lan YH, Chen LY, Ng HY, Chung MJ, Liao HN, Tseng SC, Lo CH, Chen YJ, Liao CC, Chang CS, Liang JJ, Draczkowski P, Puri S, Chang YC, Huang JS, Chen CC, Kau JH, Chen YH, Liu WC, Wu HC, Danny Hsu ST, Wang IH, Tao MH. Development of AAV-delivered broadly neutralizing anti-human ACE2 antibodies against SARS-CoV-2 variants. Mol Ther 2023; 31:3322-3336. [PMID: 37689971 PMCID: PMC10638075 DOI: 10.1016/j.ymthe.2023.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 08/03/2023] [Accepted: 09/06/2023] [Indexed: 09/11/2023] Open
Abstract
The ongoing evolution of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), resulting in the emergence of new variants that are resistant to existing vaccines and therapeutic antibodies, has raised the need for novel strategies to combat the persistent global COVID-19 epidemic. In this study, a monoclonal anti-human angiotensin-converting enzyme 2 (hACE2) antibody, ch2H2, was isolated and humanized to block the viral receptor-binding domain (RBD) binding to hACE2, the major entry receptor of SARS-CoV-2. This antibody targets the RBD-binding site on the N terminus of hACE2 and has a high binding affinity to outcompete the RBD. In vitro, ch2H2 antibody showed potent inhibitory activity against multiple SARS-CoV-2 variants, including the most antigenically drifted and immune-evading variant Omicron. In vivo, adeno-associated virus (AAV)-mediated delivery enabled a sustained expression of monoclonal antibody (mAb) ch2H2, generating a high concentration of antibodies in mice. A single administration of AAV-delivered mAb ch2H2 significantly reduced viral RNA load and infectious virions and mitigated pulmonary pathological changes in mice challenged with SARS-CoV-2 Omicron BA.5 subvariant. Collectively, the results suggest that AAV-delivered hACE2-blocking antibody provides a promising approach for developing broad-spectrum antivirals against SARS-CoV-2 and potentially other hACE2-dependent pathogens that may emerge in the future.
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Affiliation(s)
- Cheng-Pu Sun
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan; Biomedical Translation Research Center, Academia Sinica, Taipei, Taiwan
| | - Chi-Wen Chiu
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan; Department of Clinical Laboratory Science and Medical Biotechnology, National Taiwan University, Taipei, Taiwan
| | - Ping-Yi Wu
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Szu-I Tsung
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan; Graduate Institute of Microbiology, National Taiwan University, Taipei, Taiwan
| | - I-Jung Lee
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan; Graduate Institute of Microbiology, National Taiwan University, Taipei, Taiwan
| | - Chih-Wei Hu
- Institute of Preventive Medicine, National Defense Medical College, Taipei, Taiwan
| | - Min-Feng Hsu
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
| | - Tzu-Jiun Kuo
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Yu-Hua Lan
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Li-Yao Chen
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Hui-Yee Ng
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Meng-Jhe Chung
- Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, Taiwan
| | - Hsin-Ni Liao
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Sheng-Che Tseng
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Chia-Hui Lo
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Yung-Jiun Chen
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Chun-Che Liao
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan; Biomedical Translation Research Center, Academia Sinica, Taipei, Taiwan
| | - Chih-Shin Chang
- Biomedical Translation Research Center, Academia Sinica, Taipei, Taiwan
| | - Jian-Jong Liang
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | | | - Sarita Puri
- Department of Bioscience, University of Milan, Milan, Italy
| | - Yuan-Chih Chang
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
| | - Jing-Siou Huang
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
| | - Cheng-Cheung Chen
- Institute of Preventive Medicine, National Defense Medical College, Taipei, Taiwan; Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei, Taiwan
| | - Jyh-Hwa Kau
- Institute of Preventive Medicine, National Defense Medical College, Taipei, Taiwan
| | - Yen-Hui Chen
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Wen-Chun Liu
- Biomedical Translation Research Center, Academia Sinica, Taipei, Taiwan
| | - Han-Chung Wu
- Biomedical Translation Research Center, Academia Sinica, Taipei, Taiwan; Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, Taiwan
| | - Shang-Te Danny Hsu
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan; Institute of Biochemical Sciences, National Taiwan University, Taipei, Taiwan; International Institute for Sustainability with Knotted Chiral Meta Matter, Hiroshima University, Higashihiroshima, Japan
| | - I-Hsuan Wang
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan.
| | - Mi-Hua Tao
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan; Biomedical Translation Research Center, Academia Sinica, Taipei, Taiwan; Department of Clinical Laboratory Science and Medical Biotechnology, National Taiwan University, Taipei, Taiwan; Graduate Institute of Microbiology, National Taiwan University, Taipei, Taiwan.
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Chu YT, Chen BH, Chen HH, Lee JC, Kuo TJ, Chiu HC, Lu WH. Hypoxia-Induced Kidney Injury in Newborn Rats. Toxics 2023; 11:260. [PMID: 36977025 PMCID: PMC10053593 DOI: 10.3390/toxics11030260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/08/2023] [Accepted: 03/10/2023] [Indexed: 06/18/2023]
Abstract
Exposure to hypoxia during the early postnatal period can have adverse effects on vital organs. Neonatal Sprague-Dawley rats housed in a hypoxic chamber were compared to those in a normoxic chamber from postnatal days 0 to 7. Arterial blood was collected to evaluate renal function and hypoxia. Kidney morphology and fibrosis were evaluated using staining methods and immunoblotting. In the kidneys of the hypoxic group, protein expressions of hypoxia-inducible factor-1 were higher than those in the normoxic group. Hypoxic rats had higher levels of hematocrit, serum creatinine, and lactate than normoxic rats. Body weight was reduced, and protein loss of kidney tissue was observed in hypoxic rats compared to normoxic rats. Histologically, hypoxic rats showed glomerular atrophy and tubular injury. Renal fibrosis with collagen fiber deposition was observed in the hypoxic group. The expression of nicotinamide adenine dinucleotide phosphate oxidases was enhanced in the kidneys of hypoxic rats. Proteins involved in apoptosis were upregulated in the kidneys of hypoxic rats. An increase in the expression of pro-inflammatory cytokines was also observed in the kidneys of hypoxic rats. Hypoxic kidney injury in neonatal rats was associated with oxidative stress, inflammation, apoptosis, and fibrosis.
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Affiliation(s)
- Yi-Ting Chu
- Department of Pediatrics, Kaohsiung Veterans General Hospital, Kaohsiung 813414, Taiwan
| | - Bo-Hau Chen
- Department of Pediatrics, Taoyuan Armed Forces General Hospital, Taoyuan 32551, Taiwan
| | - Hsin-Hung Chen
- Department of Medical Education and Research, Kaohsiung Veterans General Hospital, Kaohsiung 813414, Taiwan
| | - Jui-Chen Lee
- Department of Pediatrics, Kaohsiung Veterans General Hospital, Kaohsiung 813414, Taiwan
| | - Tzu-Jiun Kuo
- Department of Medical Education and Research, Kaohsiung Veterans General Hospital, Kaohsiung 813414, Taiwan
| | - Hsiang-Chin Chiu
- Department of Pediatrics, Pingtung Veterans General Hospital, Pingtung 91245, Taiwan
| | - Wen-Hsien Lu
- Department of Pediatrics, Kaohsiung Veterans General Hospital, Kaohsiung 813414, Taiwan
- School of Medicine, National Yang-Ming University, Taipei 11221, Taiwan
- Institute of Biomedical Sciences, National Sun Yat-sen University, Kaohsiung 804201, Taiwan
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Lin CT, Kuo TJ, Shaw JF, Kao MC. Characterization of the dimer-monomer equilibrium of the papaya Copper/Zinc superoxide dismutase and its equilibrium shift by a single amino acid mutation. J Agric Food Chem 1999; 47:2944-2949. [PMID: 10552591 DOI: 10.1021/jf981355t] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The coding region of the copper/zinc superoxide dismutase (Cu/Zn SOD) cDNA from papaya fruit, Carica papaya L. cv. Tainong 2, was cloned into an expression vector, pET-20b(+). The Cu/Zn SOD was expressed in Escherichia coli and purified by His-tag technique. Two active forms of the enzyme (30% dimer and 70% monomer) in equilibrium were observed. The activity of the dimeric enzyme was higher than that of the monomeric form. The thermal inactivation rate constant K(d) values calculated for the dimer and monomer at 90 degrees C were -0.0203 and -0.0216 min(-1), and the half-lives for inactivation were 41.9 and 31.8 min, respectively. This indicated that the dimeric enzyme was more stable than its monomeric form. The dimerization of the enzyme was inhibited under acidic pH (below 3.0) or imidazole buffer (above 0.5 M), whereas it was not affected under alkaline pH (above 9.0). Both activity and forms of the enzyme were not affected by 1-4% SDS. Furthermore, the dimeric enzyme was much more resistant to proteolytic attack after 3 h of incubation at 37 degrees C with trypsin or chymotrypsin. In addition, mutation of the papaya Cu/Zn SOD at position 48 from Leu to Phe (L48F) affected the association of monomer, whereas a mutant with Lys substitution (L48K) at the same position tended to dissociate into monomeric form.
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Affiliation(s)
- C T Lin
- Institute of Marine Biotechnology, National Taiwan Ocean University, 2 Pei-Ning Road, Keelung 2024, Taiwan, Republic of China.
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Lin MT, Kuo TJ, Lin CT. Molecular Cloning of a cDNA Encoding Copper/Zinc Superoxide Dismutase from Papaya Fruit and Overexpression in Escherichia coli. J Agric Food Chem 1998; 46:344-348. [PMID: 10554243 DOI: 10.1021/jf9706843] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
A full-length complementary DNA (cDNA) clone encoding a putative copper/zinc superoxide dismutase (Cu/Zn SOD) of papaya fruit, Carica papaya L. cv. Tainong 2, was amplified according to the polymerase chain reaction technique from cDNA synthesized from fruit messenger RNA. Nucleotide sequence analysis of this cDNA clone revealed that it comprised a complete open reading frame coding for 152 amino acid residues. The deduced amino acid sequence showed higher identity (81.6-84.9%) with the sequences of the cytosolic Cu/Zn SODs than those of the chloroplast from other plant species, and no recognizable plastid targeting peptide was found. These suggest that the papaya fruit cDNA clone encodes a cytosolic Cu/Zn SOD. The residues required for coordinating copper (His-45, -47, -62, and -119) and zinc (His-62, -70, and -79 and Asp-82), as well as the two cysteines (56 and 145) that form a single disulfide bond, are conserved as they are among all reported Cu/Zn SOD sequences. In addition, the coding region of Cu/Zn SOD cDNA from papaya was introduced into an expression vetor, pET-20b(+), and transformed into Escherichia coli AD494(DE3)pLysS. A predominant protein band was detected by Coomassie blue staining of native PAGE, and activity staining confirmed the result of Coomassie blue staining. These indicate that this Cu/Zn SOD cDNA clone can overexpress active Cu/Zn SOD enzyme in E. coli.
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Affiliation(s)
- MT Lin
- Department of Bioengineering, Tatung Institute of Technology, Taipei, Taiwan, and Institute of Marine Biotechnology, National Taiwan Ocean University, Keelung, Taiwan
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