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Geng S, Chen D, Wang Y, Yu X, Zuo D, Lv X, Zhou X, Hu C, Yang X, Ma X, Hu W, Xi J, Yu S. Serum levels of Vanin-2 increase with obesity in relation to inflammation of adipose tissue and may be a predictor of bariatric surgery outcomes. Front Nutr 2023; 10:1270435. [PMID: 38156278 PMCID: PMC10753581 DOI: 10.3389/fnut.2023.1270435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 11/06/2023] [Indexed: 12/30/2023] Open
Abstract
Objective Excessive obesity can lead to dysfunction in adipose tissue, which contributes to the development of comorbidities associated with obesity, such as type 2 diabetes (T2D), cardiovascular and cerebrovascular disease, among others. Previous research has mainly focused on the Vanin family in systemic inflammatory diseases or predicting its role in tumor prognosis, while neglecting its role as a secretory protein in adipose tissue inflammation and metabolism. The objective of this study was to compare the changes in Vanin-2 levels in the circulating blood of normal and obese individuals, and to assess its correlation with inflammatory factors in vivo. Furthermore, the study aimed to systematically evaluate its effectiveness in human weight loss surgery. Methods Serum concentrations of Vanin-2 and inflammatory indicators were measured in 518 volunteers. Furthermore, the concentrations of Vanin-2 were measured both before and after weight loss through a dietetic program or laparoscopic sleeve gastrectomy (LSG). Additionally, we assessed the levels of insulin, adiponectin, and inflammation-related factors. The hormonal profile and changes in body weight were evaluated at baseline and 3 months after surgery. Results Serum levels of Vanin-2 were found to be significantly increased in individuals with overweight/obesity (OW/OB) group (controls 438.98 ± 72.44, OW/OB 530.89 ± 79.39 ug/L; p < 0.001). These increased levels were associated with IL-18, BMI, FAT%, and HOMA-IR. However, levels of Vanin-2 remained unchanged after conventional dietary treatment. On the other hand, weight loss induced by LSG resulted in a significant decrease in Vanin-2 concentrations from 586.44 ± 48.84 to 477.67 ± 30.27 ug/L (p < 0.001), and this decrease was associated with the Vanin-2 concentrations observed before the operation. Conclusion Serum Vanin-2 is a highly effective biomarker for assessing adipose tissue inflammation in obesity and has the potential to serve as a predictor of bariatric surgery outcomes.
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Affiliation(s)
- Shan Geng
- The Affiliated Dazu Hospital of Chongqing Medical University, Chongqing, China
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China
| | - Dongmei Chen
- Department of Otorhinolaryngology, The Affiliated Dazu Hospital of Chongqing Medical University, Chongqing, China
| | - Yanping Wang
- The Affiliated Dazu Hospital of Chongqing Medical University, Chongqing, China
| | - Xingrui Yu
- Institute of Information, Xiamen University, Xiamen, China
| | - Dan Zuo
- Department of Clinical Nutrition, The Affiliated Dazu Hospital of Chongqing Medical University, Chongqing, China
| | - Xinlu Lv
- Department of Endocrinology, The Affiliated Dazu Hospital of Chongqing Medical University, Chongqing, China
| | - Xuelian Zhou
- The Affiliated Dazu Hospital of Chongqing Medical University, Chongqing, China
| | - Chengju Hu
- The Affiliated Dazu Hospital of Chongqing Medical University, Chongqing, China
| | - Xuesong Yang
- Department of General Surgery, The Affiliated Dazu Hospital of Chongqing Medical University, Chongqing, China
| | - Xujue Ma
- Department of Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical and Pharmaceutical College, Chongqing, China
| | - Wenjing Hu
- Department of Clinical Nutrition, The Affiliated Dazu Hospital of Chongqing Medical University, Chongqing, China
| | - Jiazhuang Xi
- The Affiliated Dazu Hospital of Chongqing Medical University, Chongqing, China
| | - Shaohong Yu
- Department of General Surgery, The Affiliated Dazu Hospital of Chongqing Medical University, Chongqing, China
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Whelan R, Feemster A, Laskowski J, Renner B, Kulik L, Poppelaars F, Lee C, Holers VM, Thurman JM. Female but Not Male Mice Deficient in Soluble IgM Are Susceptible to Chemically Induced Glomerular Injury. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2023; 211:1240-1248. [PMID: 37682538 PMCID: PMC10592129 DOI: 10.4049/jimmunol.2200292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 08/11/2023] [Indexed: 09/09/2023]
Abstract
B cell-targeted therapies are effective for treating multiple different kidney diseases in humans and also protect mice from Adriamycin nephropathy. Because glomerular IgM is frequently seen in both humans and mice with "nonimmune" forms of glomerular disease, we hypothesized that natural IgM binds to epitopes displayed in the injured glomerulus, exacerbating injury. To test this hypothesis, we induced Adriamycin nephropathy in BALB/C mice that cannot secrete soluble IgM (sIgM-/- mice) and compared them with BALB/C controls. Contrary to our prediction, we found that female sIgM-/- mice developed higher mortality and more severe kidney injury after injection of Adriamycin. The absence of soluble IgM did not reduce glomerular complement activation, and IgG was seen deposited within the injured glomeruli. Furthermore, we discovered that female sIgM-/- mice have higher levels of anti-cardiolipin IgG, and that IgG from these mice binds to epitopes in the injured kidney. These findings indicate that natural IgM may prevent generation of autoreactive IgG. Circulating levels of anti-cardiolipin IgG decreased after induction of kidney injury in female mice, consistent with deposition of the Abs in injured tissues. Better understanding of the mechanisms by which the immune system modulates and amplifies kidney injury may enable the development of targeted therapies to slow kidney disease progression.
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Affiliation(s)
- Russell Whelan
- Department of Pediatrics, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, CO, USA
| | - Andrew Feemster
- Department of Medicine, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, CO, USA
| | - Jennifer Laskowski
- Department of Medicine, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, CO, USA
| | - Brandon Renner
- Department of Medicine, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, CO, USA
| | - Liudmila Kulik
- Department of Medicine, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, CO, USA
| | - Felix Poppelaars
- Department of Medicine, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, CO, USA
| | - Cameron Lee
- Department of Medicine, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, CO, USA
| | - V. Michael Holers
- Department of Medicine, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, CO, USA
| | - Joshua M. Thurman
- Department of Medicine, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, CO, USA
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Moore RE, Wang T, Duvvuri B, Feser ML, Deane KD, Solomon JJ, Lee Nelson J, Demoruelle MK, Lood C. Prediction of Erosive Disease Development by Antimitochondrial Antibodies in Rheumatoid Arthritis. Arthritis Rheumatol 2023; 75:890-899. [PMID: 36580020 PMCID: PMC10238559 DOI: 10.1002/art.42428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 12/15/2022] [Accepted: 12/20/2022] [Indexed: 12/30/2022]
Abstract
OBJECTIVE Mitochondria are found in the extracellular space in rheumatoid arthritis (RA). However, whether mitochondria are a source of autoantigens in RA has not been carefully addressed. Thus, we undertook this study to investigate the presence and significance of antimitochondrial antibodies (AMAs) in patients with RA. METHODS AMAs were measured in serum samples from 3 cross-sectional cohorts of RA patients (n = 95, n = 192, and n = 117) and healthy individuals (n = 38, n = 72, and n = 50) using a flow cytometry-based assay. Further, AMAs were detected using an anti-mitofusin-1 (anti-MFN-1) IgG enzyme-linked immunosorbent assay and Western blot analysis. A longitudinal inception cohort, followed up for a median of 8 years, was used to study disease progression. RESULTS AMA levels were elevated in RA patients from all 3 cohorts as compared to healthy individuals (P < 0.001, P < 0.05, and P < 0.01), with a range of 14-26% positivity. Levels of anti-MFN-1 antibodies correlated with AMA levels (r = 0.31, P = 0.006) and were elevated in RA patients as compared to healthy individuals (P < 0.001). The presence of AMAs was associated with erosive disease (P < 0.05) and interstitial lung disease (P < 0.01). Further, AMA levels were found to predict erosive disease (odds ratio [OR] 4.59, P = 0.006) and joint space narrowing (OR 3.08, P = 0.02) independent of anti-citrullinated protein antibodies. Finally, anti-MFN-1 antibodies identified seronegative patients developing erosive disease (OR 9.33; P = 0.02). CONCLUSION Our findings demonstrate the presence of novel autoantibodies targeting mitochondria in the setting of RA. AMAs were used to stratify patients based on disease phenotype and to predict development of erosive disease, including in patients with seronegative disease. Our results highlight the essential role of mitochondria in the pathogenesis of RA and suggest a possible benefit of therapies targeting mitochondrial-mediated inflammation and clearance in these patients.
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Affiliation(s)
- Richard E. Moore
- Division of Rheumatology, University of Washington, Seattle, WA, USA
| | - Ting Wang
- Division of Rheumatology, University of Washington, Seattle, WA, USA
| | - Bhargavi Duvvuri
- Division of Rheumatology, University of Washington, Seattle, WA, USA
| | - Marie L. Feser
- Division of Rheumatology, University of Colorado-Denver, Aurora, CO, USA
| | - Kevin D. Deane
- Division of Rheumatology, University of Colorado-Denver, Aurora, CO, USA
| | - Joshua J. Solomon
- Center for Interstitial Lung Disease, National Jewish Health, Denver, CO, USA
| | - J. Lee Nelson
- Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | | | - Christian Lood
- Division of Rheumatology, University of Washington, Seattle, WA, USA
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Li Y, Zhang H, Cui Z, Liu S, Xu J, Jia C, Chen Y, Wang L, Sun J, Zhang D, Zhu M, Wang J. Chemical staining enhanced Enzyme-linked immunosorbent assay for sensitive determination of Clenbuterol in food. Food Chem 2023; 400:134012. [DOI: 10.1016/j.foodchem.2022.134012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 07/17/2022] [Accepted: 08/22/2022] [Indexed: 10/15/2022]
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Sangesland M, Torrents de la Peña A, Boyoglu-Barnum S, Ronsard L, Mohamed FAN, Moreno TB, Barnes RM, Rohrer D, Lonberg N, Ghebremichael M, Kanekiyo M, Ward A, Lingwood D. Allelic polymorphism controls autoreactivity and vaccine elicitation of human broadly neutralizing antibodies against influenza virus. Immunity 2022; 55:1693-1709.e8. [PMID: 35952670 PMCID: PMC9474600 DOI: 10.1016/j.immuni.2022.07.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 02/08/2022] [Accepted: 07/13/2022] [Indexed: 01/18/2023]
Abstract
Human broadly neutralizing antibodies (bnAbs) targeting the hemagglutinin stalk of group 1 influenza A viruses (IAVs) are biased for IGHV1-69 alleles that use phenylalanine (F54) but not leucine (L54) within their CDRH2 loops. Despite this, we demonstrated that both alleles encode for human IAV bnAbs that employ structurally convergent modes of contact to the same epitope. To resolve differences in lineage expandability, we compared F54 versus L54 as substrate within humanized mice, where antibodies develop with human-like CDRH3 diversity but are restricted to single VH genes. While both alleles encoded for bnAb precursors, only F54 IGHV1-69 supported elicitation of heterosubtypic serum bnAbs following immunization with a stalk-only nanoparticle vaccine. L54 IGHV1-69 was unproductive, co-encoding for anergic B cells and autoreactive stalk antibodies that were cleared from B cell memory. Moreover, human stalk antibodies also demonstrated L54-dependent autoreactivity. Therefore, IGHV1-69 polymorphism, which is skewed ethnically, gates tolerance and vaccine expandability of influenza bnAbs.
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Affiliation(s)
- Maya Sangesland
- The Ragon Institute of Massachusetts General Hospital, The Massachusetts Institute of Technology and Harvard University, 400 Technology Square, Cambridge, MA 02139, USA
| | - Alba Torrents de la Peña
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Seyhan Boyoglu-Barnum
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, 40 Convent Drive, Bethesda, MD 20892-3005, USA
| | - Larance Ronsard
- The Ragon Institute of Massachusetts General Hospital, The Massachusetts Institute of Technology and Harvard University, 400 Technology Square, Cambridge, MA 02139, USA
| | - Faez Amokrane Nait Mohamed
- The Ragon Institute of Massachusetts General Hospital, The Massachusetts Institute of Technology and Harvard University, 400 Technology Square, Cambridge, MA 02139, USA
| | - Thalia Bracamonte Moreno
- The Ragon Institute of Massachusetts General Hospital, The Massachusetts Institute of Technology and Harvard University, 400 Technology Square, Cambridge, MA 02139, USA
| | - Ralston M Barnes
- Bristol-Myers Squibb, 700 Bay Rd, Redwood City, CA 94063-2478, USA
| | - Daniel Rohrer
- Bristol-Myers Squibb, 700 Bay Rd, Redwood City, CA 94063-2478, USA
| | - Nils Lonberg
- Bristol-Myers Squibb, 700 Bay Rd, Redwood City, CA 94063-2478, USA
| | - Musie Ghebremichael
- The Ragon Institute of Massachusetts General Hospital, The Massachusetts Institute of Technology and Harvard University, 400 Technology Square, Cambridge, MA 02139, USA
| | - Masaru Kanekiyo
- Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, 40 Convent Drive, Bethesda, MD 20892-3005, USA
| | - Andrew Ward
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Daniel Lingwood
- The Ragon Institute of Massachusetts General Hospital, The Massachusetts Institute of Technology and Harvard University, 400 Technology Square, Cambridge, MA 02139, USA.
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Cho H, Shim S, Cho WW, Cho S, Baek H, Lee SM, Shin DS. Electrochemical Impedance-Based Biosensors for the Label-Free Detection of the Nucleocapsid Protein from SARS-CoV-2. ACS Sens 2022; 7:1676-1684. [PMID: 35653260 PMCID: PMC9211059 DOI: 10.1021/acssensors.2c00317] [Citation(s) in RCA: 8] [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: 02/11/2022] [Accepted: 05/19/2022] [Indexed: 02/06/2023]
Abstract
Diagnosis of coronavirus disease (COVID-19) is important because of the emergence and global spread of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Real-time polymerase chain reaction (PCR) is widely used to diagnose COVID-19, but it is time-consuming and requires sending samples to test centers. Thus, the need to detect antigens for rapid on-site diagnosis rather than PCR is increasing. We quantified the nucleocapsid (N) protein in SARS-CoV-2 using an electro-immunosorbent assay (El-ISA) and a multichannel impedance analyzer with a 96-interdigitated microelectrode sensor (ToAD). The El-ISA measures impedance signals from residual detection antibodies after sandwich assays and thus offers highly specific, label-free detection of the N protein with low cross-reactivity. The ToAD sensor enables the real-time electrochemical detection of multiple samples in conventional 96-well plates. The limit of detection for the N protein was 0.1 ng/mL with a detection range up to 10 ng/mL. This system did not detect signals for the S protein. While this study focused on detecting the N protein in SARS-CoV-2, our system can also be widely applicable to detecting various biomolecules involved in antigen-antibody interactions.
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Affiliation(s)
- Hana Cho
- Department
of Chemical and Biological Engineering, Sookmyung Women’s University, Yongsan-gu, Seoul 04310, Republic of Korea
- Industry
Collaboration Center, Sookmyung Women’s
University, Yongsan-gu, Seoul 04310, Republic
of Korea
| | - Suhyun Shim
- Department
of Chemical and Biological Engineering, Sookmyung Women’s University, Yongsan-gu, Seoul 04310, Republic of Korea
| | - Won Woo Cho
- Cantis
Inc., Ansan-si, Gyeonggi-do 15588, Republic of Korea
| | - Sungbo Cho
- Department
of Electronics Engineering, Gachon University, Seongnam-si, Gyeonggi-do 13120, Republic of Korea
| | - Hanseung Baek
- Comprehensive
Dental Care Center, Purme Nexon Children
Rehabilitation Hospital, Mapo-gu, Seoul 03918, Republic
of Korea
| | - Sang-Myung Lee
- Cantis
Inc., Ansan-si, Gyeonggi-do 15588, Republic of Korea
| | - Dong-Sik Shin
- Department
of Chemical and Biological Engineering, Sookmyung Women’s University, Yongsan-gu, Seoul 04310, Republic of Korea
- Industry
Collaboration Center, Sookmyung Women’s
University, Yongsan-gu, Seoul 04310, Republic
of Korea
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Gao L, Li Y, Huang ZZ, Tan H. Integrated enzyme with stimuli-responsive coordination polymer for personal glucose meter-based portable immunoassay. Anal Chim Acta 2022; 1207:339774. [DOI: 10.1016/j.aca.2022.339774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Revised: 03/22/2022] [Accepted: 03/24/2022] [Indexed: 11/01/2022]
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Improvement of Rimocidin Biosynthesis by Increasing Supply of Precursor Malonyl-CoA via Over-expression of Acetyl-CoA Carboxylase in Streptomyces rimosus M527. Curr Microbiol 2022; 79:174. [PMID: 35488939 DOI: 10.1007/s00284-022-02867-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 04/07/2022] [Indexed: 11/03/2022]
Abstract
Precursor engineering is an effective strategy for the overproduction of secondary metabolites. The polyene macrolide rimocidin, which is produced by Streptomyces rimosus M527, exhibits a potent activity against a broad range of phytopathogenic fungi. It has been predicted that malonyl-CoA is used as extender units for rimocidin biosynthesis. Based on a systematic analysis of three sets of time-series transcriptome microarray data of S. rimosus M527 fermented in different conditions, the differentially expressed accsr gene that encodes acetyl-CoA carboxylase (ACC) was found. To understand how the formation of rimocidin is being influenced by the expression of the accsr gene and by the concentration of malonyl-CoA, the accsr gene was cloned and over-expressed in the wild-type strain S. rimosus M527 in this study. The recombinant strain S. rimosus M527-ACC harboring the over-expressed accsr gene exhibited better performances based on the enzymatic activity of ACC, intracellular malonyl-CoA concentrations, and rimocidin production compared to S. rimosus M527 throughout the fermentation process. The enzymatic activity of ACC and intracellular concentration of malonyl-CoA of S. rimosus M527-ACC were 1.0- and 1.5-fold higher than those of S. rimosus M527, respectively. Finally, the yield of rimocidin produced by S. rimosus M527-ACC reached 320.7 mg/L, which was 34.0% higher than that of S. rimosus M527. These results confirmed that malonyl-CoA is an important precursor for rimocidin biosynthesis and suggested that an adequate supply of malonyl-CoA caused by accsr gene over-expression led to the improvement in rimocidin production.
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Zhang J, Xu J, Li H, Zhang Y, Ma Z, Bechthold A, Yu X. Enhancement of toyocamycin production through increasing supply of precursor GTP in Streptomyces diastatochromogenes 1628. J Basic Microbiol 2022; 62:750-759. [PMID: 35076122 DOI: 10.1002/jobm.202100622] [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: 11/26/2021] [Revised: 01/03/2022] [Accepted: 01/08/2022] [Indexed: 11/07/2022]
Abstract
The nucleoside antibiotic toyocamycin (TM), which is produced by Streptomyces diastatochromogenes 1628, exhibits potent activity against a broad range of phytopathogenic fungi. TM was synthesized through a multi-step reaction, using guanosine triphosphate (GTP) as precursor. Based on a comparison of proteomics data from S. diastatochromogenes 1628 and rifamycin-resistant mutant 1628-T15 with high yield of TM, we determined that the differentially expressed protein X0NBV6 called ribose-phosphate pyrophosphokinase (RHP), which is a rate-limiting enzyme involved in the de novo biosynthesis of GTP, exhibits a higher expression level in mutant 1628-T15. In this study, to elucidate the relationships between RHP, GTP, and TM production, the gene rhp sd encoding RHP was cloned and overexpressed in S. diastatochromogenes strain 1628. The recombinant strain S. diastatochromogenes 1628-RHP exhibited better performance at the transcriptional level of the rhp sd gene, as well as RHP enzymatic activity, intracellular GTP concentration, and TM production, compared to S. diastatochromogenes 1628. Finally, the yield of TM produced by S. diastatochromogenes 1628-RHP (340.2 mg/L) was 133.3% higher than that produced by S. diastatochromogenes1628. Moreover, the transcriptional level of toy genes involved in TM biosynthesis was enhanced due to the overexpression of the rhp sd gene.
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Affiliation(s)
- Jinyao Zhang
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection & Quarantine, College of Life Sciences, China Jiliang University, Hangzhou, Zhejiang, China
| | - Jie Xu
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection & Quarantine, College of Life Sciences, China Jiliang University, Hangzhou, Zhejiang, China
| | - Huijie Li
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection & Quarantine, College of Life Sciences, China Jiliang University, Hangzhou, Zhejiang, China
| | - Yongyong Zhang
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection & Quarantine, College of Life Sciences, China Jiliang University, Hangzhou, Zhejiang, China
| | - Zheng Ma
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection & Quarantine, College of Life Sciences, China Jiliang University, Hangzhou, Zhejiang, China
| | - Andreas Bechthold
- Pharmaceutical Biology and Biotechnology, Institute for Pharmaceutical Sciences, University of Freiburg, Freiburg, Germany
| | - Xiaoping Yu
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection & Quarantine, College of Life Sciences, China Jiliang University, Hangzhou, Zhejiang, China
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Li L, Yan X, Xia M, Shen B, Cao Y, Wu X, Sun J, Zhang Y, Zhang M. Nanoparticle/Nanocarrier Formulation as an Antigen: The Immunogenicity and Antigenicity of Itself. Mol Pharm 2022; 19:148-159. [PMID: 34886673 DOI: 10.1021/acs.molpharmaceut.1c00704] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
In antibody preparation, the immunogenicity of small molecules is limited due to the instability of adjuvant/hapten emulsions. Nanoparticle-based adjuvants overcome instability and effectively improve immune responses. Immunogenicity and antigenicity are fundamentally important, yet understudied, facets of nanoparticle formulations themselves. Herein, we studied the immunogenicity and antigenicity of nanoparticle formulations. In experiments in a rabbit model, simple inorganic nanoparticle (e.g., gold nanoparticle (AuNP) and silver nanoparticle (AgNP)) immunogens induced higher titers of antiserum. Moreover, several promising nanoparticle drug carrier immunogens (e.g., SiO2, oleylamine graft polysuccinimide (PSIOAm), oleylamine and N-(3-aminopropyl)imidazole cograft polysuccinimide (PSIOAm-NAPI), Fe3O4@O-dextran, etc.) showed excellent immunogenicity. Cross-reactivity calculations revealed that the antigenicity properties of AgNP and AuNP antigens are highly size-dependent. Meanwhile, four nanoparticle drug carriers generate antibody-specific immune responses to their antigens. The reactivity of the anti-NP antibodies with nanoparticle antigens was confirmed using immunoassays. This study systematically identified the immunogenicity and antigenicity of the nanoparticle formulation itself. These findings provide insights into the immunological properties of the nanoparticle formulation itself in an organism.
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Affiliation(s)
- Lei Li
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, Laboratory of Biosensing and Bioimaging, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Xi Yan
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, Laboratory of Biosensing and Bioimaging, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Meng Xia
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, Laboratory of Biosensing and Bioimaging, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Bi Shen
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, Laboratory of Biosensing and Bioimaging, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Yiting Cao
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, Laboratory of Biosensing and Bioimaging, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Xiayu Wu
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, Laboratory of Biosensing and Bioimaging, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Jinwen Sun
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, Laboratory of Biosensing and Bioimaging, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Yue Zhang
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, Laboratory of Biosensing and Bioimaging, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Mingcui Zhang
- The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, Laboratory of Biosensing and Bioimaging, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
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11
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Trachtman H, Laskowski J, Lee C, Renner B, Feemster A, Parikh S, Panzer SE, Zhong W, Cravedi P, Cantarelli C, Kulik L, You Z, Satchell S, Rovin B, Liu F, Kalled SL, Holers VM, Jalal D, Thurman JM. Natural antibody and complement activation characterize patients with idiopathic nephrotic syndrome. Am J Physiol Renal Physiol 2021; 321:F505-F516. [PMID: 34459222 DOI: 10.1152/ajprenal.00041.2021] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Focal segmental glomerulosclerosis (FSGS) and minimal change disease (MCD) are common forms of idiopathic nephrotic syndrome. The causes of these diseases are incompletely understood, but the response of patients to immunosuppressive therapies suggests that their pathogenesis is at least in part immune mediated. Preclinical and clinical research indicates that activation of the classical pathway of complement contributes to glomerular injury in FSGS. Glomerular IgM deposits are also prominent in some patients, raising the possibility that IgM is a trigger of classical pathway activation. In the present study, we examined the pattern of complement activation in the glomeruli and plasma of patients with nephrotic syndrome. We also tested whether patients with FSGS and MCD have elevated levels of natural IgM reactive with epitopes on glomerular endothelial cells and cardiolipin. We found evidence of classical pathway activation in patients with idiopathic nephrotic syndrome compared with healthy control subjects. We also detected higher levels of self-reactive IgM to both targets. Based on these results, IgM and classical pathway activation may contribute to disease pathogenesis in some patients with FSGS and MCD.NEW & NOTEWORTHY IgM is detected in biopsies from some patients with nephrotic syndrome, although this has been attributed to passive trapping of the protein. We found, however, that IgM colocalizes with complement activation fragments in some glomeruli. We also found that affected patients had higher levels of IgM reactive to glomerular endothelial cell epitopes. Thus, IgM activates the complement system in the glomeruli of some patients with nephrotic syndrome and may contribute to injury.
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Affiliation(s)
- Howard Trachtman
- Department of Pediatrics, Langone Medical Center, New York University School of Medicine, New York, New York
| | - Jennifer Laskowski
- Department of Medicine, Anschutz Medical Campus, University of Colorado School of Medicine, Aurora, Colorado
| | - Cameron Lee
- Department of Medicine, Anschutz Medical Campus, University of Colorado School of Medicine, Aurora, Colorado
| | - Brandon Renner
- Department of Medicine, Anschutz Medical Campus, University of Colorado School of Medicine, Aurora, Colorado
| | - Andrew Feemster
- Department of Pediatrics, Langone Medical Center, New York University School of Medicine, New York, New York
| | - Samir Parikh
- Department of Internal Medicine, Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Sarah E Panzer
- Department of Medicine, University of Wisconsin-Madison Hospital and Clinics, Madison, Wisconsin
| | - Weixiong Zhong
- Department of Medicine, University of Wisconsin-Madison Hospital and Clinics, Madison, Wisconsin
| | - Paolo Cravedi
- Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Chiara Cantarelli
- Dipartimento di Medicina e Chirurgia, Università di Parma, UO Nefrologia, Azienda Ospedaliero-Universitaria di Parma, Parma, Italy
| | - Liudmila Kulik
- Department of Medicine, Anschutz Medical Campus, University of Colorado School of Medicine, Aurora, Colorado
| | - Zhiying You
- Department of Medicine, Anschutz Medical Campus, University of Colorado School of Medicine, Aurora, Colorado
| | - Simon Satchell
- Bristol Renal, Faculty of Health Sciences, University of Bristol, Bristol, United Kingdom
| | - Brad Rovin
- Department of Internal Medicine, Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Fei Liu
- Q32 Bio, Incorporated, Cambridge, Massachusetts
| | | | - V Michael Holers
- Department of Medicine, Anschutz Medical Campus, University of Colorado School of Medicine, Aurora, Colorado
| | - Diana Jalal
- Department of Medicine, University of Iowa Hospitals and Clinics, Iowa City, Iowa
| | - Joshua M Thurman
- Department of Medicine, Anschutz Medical Campus, University of Colorado School of Medicine, Aurora, Colorado
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12
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Li S, Hu X, Li Y, Tan H. Fluorescent enzyme-linked immunosorbent assay based on alkaline phosphatase-responsive coordination polymer composite. Mikrochim Acta 2021; 188:263. [PMID: 34287706 DOI: 10.1007/s00604-021-04920-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 06/27/2021] [Indexed: 11/24/2022]
Abstract
The fabrication of alkaline phosphatase (ALP)-responsive coordination polymer (CP) composite is demonstrated for establishing a fluorescent immunoassay. The CP composite (ThT@GMP/Eu) was synthesized by encapsulating thioflavin T (ThT) into the CP host that was composed of europium ion (Eu3+) and guanine monophosphate (GMP). The ThT@GMP/Eu composite shows a strong fluorescence in aqueous solution due to the confinement effect of GMP/Eu CPs, which restricts the conformational rotation of ThT. However, upon the addition of ALP, the structure of GMP/Eu CPs was disrupted to release ThT into solution. This results in the quenching of the fluorescence of ThT@GMP/Eu. The fluorescence of ThT@GMP/Eu has a linear response that covers 0.8 to 120 mU/mL ALP with a detection limit of 0.26 mU/mL and exhibits excellent specificity towards ALP against other enzymes. On this basis, inspired by the wide application of ALP as an enzyme label in enzyme-linked immunosorbent assay (ELISA), an ALP-based fluorescent immunoassay was further developed for the detection of mouse immunoglobulin G (mIgG). The developed immunoassay displays a linear fluorescent response towards mIgG from 0.8 to 100 ng/mL, and the detection limit is 0.16 ng/mL. The fluorescent immunoassay was successfully applied to the determination of mIgG in serum samples. Schematic of the responsivity of ThT@GMP/Eu to ALP that hydrolyzes GMP to release ThT, which leads to fluorescent quenching, and its application in the construction of a fluorescent immunoassay for mIgG determination.
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Affiliation(s)
- Shenghua Li
- College of Biological and Food Engineering, Huaihua University, Huaihua, 418000, People's Republic of China
| | - Xing Hu
- College of Biological and Food Engineering, Huaihua University, Huaihua, 418000, People's Republic of China
| | - Yong Li
- Key Laboratory of Chemical Biology of Jiangxi Province, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, People's Republic of China
| | - Hongliang Tan
- College of Biological and Food Engineering, Huaihua University, Huaihua, 418000, People's Republic of China.
- Key Laboratory of Chemical Biology of Jiangxi Province, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, People's Republic of China.
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13
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Wan LY, Gu JY, Liu TT, Hu QY, Jia JC, Teng JL, Sun Y, Liu HL, Cheng XB, Ye JN, Su YT, Wu XY, Chi HH, Zhou ZC, Wang ZH, Zhou JF, Norman GL, Dai J, Yang CD, Shi H. Clinical performance of automated chemiluminescent methods for anticardiolipin and anti-β2-glycoprotein I antibodies detection in a large cohort of Chinese patients with antiphospholipid syndrome. Int J Lab Hematol 2020; 42:206-213. [PMID: 31958215 DOI: 10.1111/ijlh.13156] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 12/24/2019] [Accepted: 12/28/2019] [Indexed: 11/26/2022]
Abstract
INTRODUCTION To assess the clinical performance and correlations of automated chemiluminescence assay (CIA) and enzyme-linked immunosorbent assay (ELISA) for detecting antiphospholipid (aPL) antibodies in the diagnosis of antiphospholipid syndrome (APS). METHODS The study recruited 505 subjects, including 192 with APS, 193 with connective tissue diseases other than APS, and 120 healthy donors. We measured anticardiolipin (aCL) and anti-β2-glycoprotein I (anti-β2GPI) antibodies IgG, IgM, and IgA in all the samples using both CIA and ELISA. RESULTS Total agreement between the two methods ranged from 83.50% for anti-β2GPI IgG antibodies to 92.76% for anti-β2GPI IgM antibodies in all the groups. Anti-β2GPI and aCL IgG assays showed the highest Spearman's rho coefficients (anti-β2GPI IgG = 0.742, aCL IgG = 0.715). Anti-β2GPI IgG CIA showed the highest sensitivity for diagnosis of APS at 80.21%, which was significantly higher than the sensitivity of anti-β2GPI IgG ELISA (52.08%). For diagnosis of APS, anti-β2GPI IgG CIA had the best discrimination power with the area under the curves (AUC) of 0.922, followed by aCL IgG CIA (AUC of 0.905). While the CIA AUC was slightly higher in all cases, the difference was not statistically significant. CONCLUSION CIA measurements had a good agreement and correlation with comparative ELISA assays. The CIA anti-β2GPI IgG however was significantly more sensitive for APS diagnosis. The two assay methodologies showed comparable predictive powers and support the value of the CIA method for improved diagnosis and management of patients with APS.
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Affiliation(s)
- Li-Yan Wan
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jie-Yu Gu
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ting-Ting Liu
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qiong-Yi Hu
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jin-Chao Jia
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jia-Lin Teng
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yue Sun
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hong-Lei Liu
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiao-Bing Cheng
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jun-Na Ye
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yu-Tong Su
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xin-Yao Wu
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hui-Hui Chi
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhuo-Chao Zhou
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhi-Hong Wang
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | | | | | - Jing Dai
- Laboratory Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Cheng-de Yang
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hui Shi
- Department of Rheumatology and Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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14
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Gao L, Yang Q, Wu P, Li F. Recent advances in nanomaterial-enhanced enzyme-linked immunosorbent assays. Analyst 2020; 145:4069-4078. [DOI: 10.1039/d0an00597e] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This review highlights functional roles of nanomaterials for advancing conventional ELISA assays by serving as substrate-alternatives, enzyme-alternatives, or non-enzyme amplifiers.
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Affiliation(s)
- Lu Gao
- Key laboratory of Green Chemistry & Technology of Ministry of Education
- College of chemistry
- Analytical & Testing Center
- Sichuan University
- Chengdu
| | - Qianfan Yang
- Key laboratory of Green Chemistry & Technology of Ministry of Education
- College of chemistry
- Analytical & Testing Center
- Sichuan University
- Chengdu
| | - Peng Wu
- Key laboratory of Green Chemistry & Technology of Ministry of Education
- College of chemistry
- Analytical & Testing Center
- Sichuan University
- Chengdu
| | - Feng Li
- Key laboratory of Green Chemistry & Technology of Ministry of Education
- College of chemistry
- Analytical & Testing Center
- Sichuan University
- Chengdu
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15
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Advances in the Research on Anticardiolipin Antibody. J Immunol Res 2019; 2019:8380214. [PMID: 31886311 PMCID: PMC6914984 DOI: 10.1155/2019/8380214] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 10/30/2019] [Accepted: 11/08/2019] [Indexed: 12/19/2022] Open
Abstract
Anticardiolipin antibody (ACA) is a kind of autoantibody and is one of the antiphospholipid antibodies (aPLs). Phospholipids with a negative charge on platelets and endothelial cell membranes are ACA target antigens. ACA is common in systemic lupus erythematosus and other autoimmune diseases and is closely associated with thrombosis, thrombocytopenia, and spontaneous abortion. In 1983, Harris established a method for detecting ACA, and research on the antibody has gained worldwide attention and has developed rapidly. For this review, we browsed articles that cover most of the ACA-related studies in the last 25 years and extracted influential ideas and conclusions in this field.
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16
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Zhou Q, Li G, Chen K, Yang H, Yang M, Zhang Y, Wan Y, Shen Y, Zhang Y. Simultaneous Unlocking Optoelectronic and Interfacial Properties of C60 for Ultrasensitive Immunosensing by Coupling to Metal–Organic Framework. Anal Chem 2019; 92:983-990. [DOI: 10.1021/acs.analchem.9b03915] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Qing Zhou
- School of Chemistry and Chemical Engineering, Medical School, Southeast University, Nanjing 211189, China
| | - Guanghui Li
- Shanghai Novamab Biopharmaceuticals Co., Ltd., Shanghai 201203, China
| | - Kaiyang Chen
- School of Chemistry and Chemical Engineering, Medical School, Southeast University, Nanjing 211189, China
| | - Hong Yang
- School of Chemistry and Chemical Engineering, Medical School, Southeast University, Nanjing 211189, China
| | - Mengran Yang
- School of Chemistry and Chemical Engineering, Medical School, Southeast University, Nanjing 211189, China
| | - Yuye Zhang
- School of Chemistry and Chemical Engineering, Medical School, Southeast University, Nanjing 211189, China
| | - Yakun Wan
- Shanghai Novamab Biopharmaceuticals Co., Ltd., Shanghai 201203, China
| | - Yanfei Shen
- School of Chemistry and Chemical Engineering, Medical School, Southeast University, Nanjing 211189, China
| | - Yuanjian Zhang
- School of Chemistry and Chemical Engineering, Medical School, Southeast University, Nanjing 211189, China
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17
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Lu LL, Smith MT, Yu KKQ, Luedemann C, Suscovich TJ, Grace PS, Cain A, Yu WH, McKitrick TR, Lauffenburger D, Cummings RD, Mayanja-Kizza H, Hawn TR, Boom WH, Stein CM, Fortune SM, Seshadri C, Alter G. IFN-γ-independent immune markers of Mycobacterium tuberculosis exposure. Nat Med 2019; 25:977-987. [PMID: 31110348 PMCID: PMC6559862 DOI: 10.1038/s41591-019-0441-3] [Citation(s) in RCA: 157] [Impact Index Per Article: 31.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 04/01/2019] [Indexed: 12/31/2022]
Abstract
Exposure to Mycobacterium tuberculosis (Mtb) results in heterogeneous clinical outcomes including primary progressive tuberculosis and latent Mtb infection (LTBI). Mtb infection is identified using the tuberculin skin test and interferon-γ (IFN-γ) release assay IGRA, and a positive result may prompt chemoprophylaxis to prevent progression to tuberculosis. In the present study, we report on a cohort of Ugandan individuals who were household contacts of patients with TB. These individuals were highly exposed to Mtb but tested negative by IFN-γ release assay and tuberculin skin test, ‘resisting’ development of classic LTBI. We show that ‘resisters’ possess IgM, class-switched IgG antibody responses and non-IFN-γ T cell responses to the Mtb-specific proteins ESAT6 and CFP10, immunologic evidence of exposure to Mtb. Compared to subjects with classic LTBI, ‘resisters’ display enhanced antibody avidity and distinct Mtb-specific IgG Fc profiles. These data reveal a distinctive adaptive immune profile among Mtb-exposed subjects, supporting an expanded definition of the host response to Mtb exposure, with implications for public health and the design of clinical trials. New immune biomarkers of exposure to tuberculosis may require a rethink of evidence of Mycobacterium tuberculosis infection and control.
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Affiliation(s)
- Lenette L Lu
- Department of Immunology and Infectious Diseases, Harvard TH Chan School of Public Health, Boston, MA, USA.,Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
| | - Malisa T Smith
- Department of Medicine, University of Washington, Seattle, WA, USA
| | - Krystle K Q Yu
- Department of Medicine, University of Washington, Seattle, WA, USA
| | | | | | | | - Adam Cain
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
| | - Wen Han Yu
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA.,Department of Biological Engineering, MIT, Cambridge, MA, USA
| | - Tanya R McKitrick
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | | | - Richard D Cummings
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | | | - Thomas R Hawn
- Department of Medicine, University of Washington, Seattle, WA, USA
| | - W Henry Boom
- Department of Medicine, Case Western Reserve University and Univ. Hospitals Cleveland Medical Center, Cleveland, OH, USA
| | - Catherine M Stein
- Department of Medicine, Case Western Reserve University and Univ. Hospitals Cleveland Medical Center, Cleveland, OH, USA.,Department of Population & Quantitative Health Sciences, Case Western Reserve University, Cleveland, OH, USA
| | - Sarah M Fortune
- Department of Immunology and Infectious Diseases, Harvard TH Chan School of Public Health, Boston, MA, USA.,Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA
| | - Chetan Seshadri
- Department of Medicine, University of Washington, Seattle, WA, USA.
| | - Galit Alter
- Ragon Institute of MGH, MIT and Harvard, Cambridge, MA, USA.
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18
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Zhao D, Li J, Peng C, Zhu S, Sun J, Yang X. Fluorescence Immunoassay Based on the Alkaline Phosphatase Triggered in Situ Fluorogenic Reaction of o-Phenylenediamine and Ascorbic Acid. Anal Chem 2019; 91:2978-2984. [DOI: 10.1021/acs.analchem.8b05203] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Dan Zhao
- School of Environmental Engineering and Chemistry, Luoyang Institute of Science and Technology, Luoyang, Henan 471023, China
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130012, China
| | - Juan Li
- School of Environmental Engineering and Chemistry, Luoyang Institute of Science and Technology, Luoyang, Henan 471023, China
| | - Chuanyun Peng
- School of Environmental Engineering and Chemistry, Luoyang Institute of Science and Technology, Luoyang, Henan 471023, China
| | - Shuyun Zhu
- College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu City, Shandong Province 273165, China
| | - Jian Sun
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130012, China
| | - Xiurong Yang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130012, China
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19
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Wang C, Gao J, Tan H. Integrated Antibody with Catalytic Metal-Organic Framework for Colorimetric Immunoassay. ACS APPLIED MATERIALS & INTERFACES 2018; 10:25113-25120. [PMID: 29993238 DOI: 10.1021/acsami.8b07225] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Enzyme-linked immunosorbent assay has been widely used as a gold standard in biomedical field, but some inevitable drawbacks still exist in its practical applications, especially the laborious preparation of enzyme-antibody conjugates by a covalent linkage. In this work, we proposed a new strategy to prepare enzyme-antibody conjugate by integrating antibody with catalytic metal-organic framework (MOF) to form dual-functional MOF/antibody composite. As models, rabbit antimouse immunoglobulin G antibody (RIgG) and Cu-MOF with peroxidase-like activity were used to fabricate RIgG@Cu-MOF composite for colorimetric immunoassay. It was found that Cu-MOF as a host not only has no influence on the original capture ability of RIgG to its corresponding antigen (mIgG), but also can shield RIgG against long-term storage, high temperature, and biological degradation. More importantly, upon the formation of sandwiched immunocomplex between RIgG@Cu-MOF and capture antibody, Cu-MOF can serve as a signal amplification unit to perform colorimetric immunoassay. The detection limit of RIgG@Cu-MOF toward mIgG was obtained at 0.34 ng/mL, which is 3-fold lower than that of horseradish peroxidase labeled RIgG. Furthermore, the successful determination of mIgG in serum sample demonstrates the applicability of RIgG@Cu-MOF in detecting real sample. Therefore, it is highly anticipated that this study can offer a new way to prepare enzyme-antibody conjugates, facilitating the exploration of MOF composites in biomedical field.
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Affiliation(s)
- Caihong Wang
- Key Laboratory of Chemical Biology of Jiangxi Province, College of Chemistry and Chemical Engineering , Jiangxi Normal University , Nanchang 330022 , P. R. China
| | - Jie Gao
- Key Laboratory of Chemical Biology of Jiangxi Province, College of Chemistry and Chemical Engineering , Jiangxi Normal University , Nanchang 330022 , P. R. China
| | - Hongliang Tan
- Key Laboratory of Chemical Biology of Jiangxi Province, College of Chemistry and Chemical Engineering , Jiangxi Normal University , Nanchang 330022 , P. R. China
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20
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Zhao Q, Piao J, Peng W, wang J, Gao W, Wu X, Wang H, Gong X, Chang J, Zhang B. A Metal Chelator as a Plasmonic Signal-Generation Superregulator for Ultrasensitive Colorimetric Bioassays of Disease Biomarkers. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2018; 5:1800295. [PMID: 30027059 PMCID: PMC6051378 DOI: 10.1002/advs.201800295] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Revised: 04/12/2018] [Indexed: 05/14/2023]
Abstract
Enzyme-based assays have been widely applied in clinical diagnosis for decades. However, the intrinsic limitations of enzymes, such as low operation stability, mediocre sensitivity, and high cost in production and purification, heavily constrain their detection application. Here, an enzyme-free assay is reported that relies on the strong chelating capability of ethylenediamine tetraacetic acid disodium salt (EDTA•2Na, the chelator) for Au3+ ions, in which the cheap EDTA•2Na labeled by targeting moieties can selectively regulate the growth of plasmonic gold nanoparticles (AuNPs) at the target site subjecting to the concentration of analyte in samples. Independent of ambient temperature and unstable H2O2, EDTA•2Na perform superregulation in AuNPs plasmonic signal generation with distinct tonality and outstanding reliability. Upon integrating with silica nanoparticles as the signal amplifying platform, EDTA•2Na-regulated bioassay can lead to detection-sensitivity enhancements exceeding three orders of magnitude in protein detection, compared with the gold-standard assay. The limit of detection of the HBsAg and alpha fetoprotein (AFP) pushes down to 2.6 × 10-15 and 2.5 × 10-19 g mL-1, respectively. EDTA•2Na-regulated bioassay is also challenged in the clinical serum sample detection and a good consistency is found with the chemiluminescence immunoassay method in clinics.
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Affiliation(s)
- Qian Zhao
- School of Life SciencesTianjin Engineering Center of Micro‐Nano Biomaterials and Detection‐Treatment TechnologyTianjin UniversityTianjin300072China
| | - Jiafang Piao
- School of Life SciencesTianjin Engineering Center of Micro‐Nano Biomaterials and Detection‐Treatment TechnologyTianjin UniversityTianjin300072China
| | - Weipan Peng
- School of Life SciencesTianjin Engineering Center of Micro‐Nano Biomaterials and Detection‐Treatment TechnologyTianjin UniversityTianjin300072China
| | - Jun wang
- Institute of PhotomedicineShanghai Skin Disease HospitalThe Institute for Biomedical Engineering and Nano ScienceTongji University School of MedicineShanghai200443China
| | - Weichen Gao
- School of Life SciencesTianjin Engineering Center of Micro‐Nano Biomaterials and Detection‐Treatment TechnologyTianjin UniversityTianjin300072China
| | - Xiaoli Wu
- School of Life SciencesTianjin Engineering Center of Micro‐Nano Biomaterials and Detection‐Treatment TechnologyTianjin UniversityTianjin300072China
| | - Hanjie Wang
- School of Life SciencesTianjin Engineering Center of Micro‐Nano Biomaterials and Detection‐Treatment TechnologyTianjin UniversityTianjin300072China
| | - Xiaoqun Gong
- School of Life SciencesTianjin Engineering Center of Micro‐Nano Biomaterials and Detection‐Treatment TechnologyTianjin UniversityTianjin300072China
| | - Jin Chang
- School of Life SciencesTianjin Engineering Center of Micro‐Nano Biomaterials and Detection‐Treatment TechnologyTianjin UniversityTianjin300072China
| | - Bingbo Zhang
- Institute of PhotomedicineShanghai Skin Disease HospitalThe Institute for Biomedical Engineering and Nano ScienceTongji University School of MedicineShanghai200443China
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21
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Devreese KMJ, Ortel TL, Pengo V, de Laat B. Laboratory criteria for antiphospholipid syndrome: communication from the SSC of the ISTH. J Thromb Haemost 2018; 16:809-813. [PMID: 29532986 DOI: 10.1111/jth.13976] [Citation(s) in RCA: 173] [Impact Index Per Article: 28.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Indexed: 01/16/2023]
Affiliation(s)
- K M J Devreese
- Coagulation Laboratory, Department of Laboratory Medicine, Ghent University Hospital, Ghent, Belgium
| | - T L Ortel
- Departments of Medicine and Pathology, Duke University Medical Center, Durham, NC, USA
| | - V Pengo
- Cardiology Department, University of Padova, Padova, Italy
| | - B de Laat
- Department of Biochemistry, Maastricht University, Maastricht, the Netherlands
- Synapse BV, Maastricht, the Netherlands
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22
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Castanon A, Pierre G, Willis R, Harris EN, Papalardo E, Romay-Penabad Z, Schleh A, Jajoria P, Smikle M, DeCeulaer K, Tebo A, Jaskowski T, Guerra MM, Branch DW, Salmon JE, Petri M, Gonzalez EB. Performance Evaluation and Clinical Associations of Immunoassays That Detect Antibodies to Negatively Charged Phospholipids Other Than Cardiolipin. Am J Clin Pathol 2018; 149:401-411. [PMID: 29547897 DOI: 10.1093/ajcp/aqy003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
OBJECTIVES We evaluate the performance characteristics of antiphosphatidylserine (anti-PS), antiphosphatidylinositol (anti-PI), and antiphospholipid mixture (APhL) enzyme-linked immunosorbent assays (ELISAs) compared with anticardiolipin (aCL) and anti-β2 glycoprotein I (anti-β2GPI) in a large group of patients with antiphospholipid (aPL)-related diseases. METHODS Serum samples from 548 patients from the Hopkins and Jamaican systemic lupus erythematosus cohorts, the PROMISSE cohort, and the Antiphospholipid Standardization Laboratory were examined for immunoglobulin G (IgG)/immunoglobulin M (IgM) positivity in aCL, anti-β2GPI, anti-PS, anti-PI, and APhL ELISA assays. RESULTS All IgG assays were associated with one or more thrombotic and/or obstetric manifestations, with an increased risk associated with higher antibody titers. Analytical performance was similar among assays, but IgG assays performed better than IgM counterparts. CONCLUSIONS Increasing titers of APhL, anti-PS, and anti-PI antibodies could indicate an increased risk of thrombotic and/or obstetric aPL-related manifestations. These assays may be promising biomarkers for particular APS manifestations.
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Affiliation(s)
- Amaris Castanon
- Rheumatology/Internal Medicine, University of Texas Medical Branch, Galveston
| | - Grant Pierre
- Rheumatology/Internal Medicine, University of Texas Medical Branch, Galveston
| | - Rohan Willis
- Rheumatology/Internal Medicine, University of Texas Medical Branch, Galveston
| | - E Nigel Harris
- University of the West Indies, Mona Campus, Kingston, Jamaica
| | - Elizabeth Papalardo
- Rheumatology/Internal Medicine, University of Texas Medical Branch, Galveston
| | | | - Alvaro Schleh
- Rheumatology/Internal Medicine, University of Texas Medical Branch, Galveston
| | | | - Monica Smikle
- University of the West Indies, Mona Campus, Kingston, Jamaica
| | - Karel DeCeulaer
- University of the West Indies, Mona Campus, Kingston, Jamaica
| | - Anne Tebo
- ARUP Institute of Clinical and Experimental Pathology, Salt Lake City, UT
- Department of Pathology, University of Utah, Salt Lake City
| | - Troy Jaskowski
- ARUP Institute of Clinical and Experimental Pathology, Salt Lake City, UT
| | | | - D Ware Branch
- Maternal Fetal Medicine, University of Utah and Intermountain Healthcare, Salt Lake City
| | - Jane E Salmon
- Rheumatology, Hospital for Special Surgery, New York
| | | | - Emilio B Gonzalez
- Rheumatology/Internal Medicine, University of Texas Medical Branch, Galveston
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23
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Fang F, Liu J, Li Y, Yang J, Yang J. A New Colorimetric Platform for Protein Detection Based on Recognition-Induced Cascade of Polymeric Nanoparticles Disassembly. Macromol Biosci 2018; 18. [DOI: 10.1002/mabi.201700392] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 12/07/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Fang Fang
- State Key Laboratory of Chemical Resource Engineering; Beijing Key Laboratory of Bioprocess; College of Life Science and Technology; Beijing University of Chemical Technology; Beijing 100029 China
| | - Jin Liu
- State Key Laboratory of Chemical Resource Engineering; Beijing Key Laboratory of Bioprocess; College of Life Science and Technology; Beijing University of Chemical Technology; Beijing 100029 China
| | - Yushu Li
- State Key Laboratory of Chemical Resource Engineering; Beijing Key Laboratory of Bioprocess; College of Life Science and Technology; Beijing University of Chemical Technology; Beijing 100029 China
| | - Junjiao Yang
- College of Science; Beijing University of Chemical Technology; Beijing 100029 China
| | - Jing Yang
- State Key Laboratory of Chemical Resource Engineering; Beijing Key Laboratory of Bioprocess; College of Life Science and Technology; Beijing University of Chemical Technology; Beijing 100029 China
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24
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Sadetski M, Tourinho Moretto ML, Correia de Araujo RP, de Carvalho JF. Frequency of psychological alterations in primary antiphospholipid syndrome: preliminary study. Lupus 2018; 27:837-840. [PMID: 29301475 DOI: 10.1177/0961203317751063] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objectives To detect the frequency of psychological alterations in primary antiphospholipid syndrome patients. Methods Thirty-six primary antiphospholipid syndrome patients were analyzed by a psychological interview using a standard protocol and review of medical charts. Clinical manifestations, associated comorbidities, antiphospholipid antibodies, and treatment were also evaluated. Results The mean age was 44.2 ± 10.8 years, 29 (80%) were women and 29 (80%) were of Caucasian race. The mean duration of disease was 7.3 ± 5.2 years. The frequency of the presence of psychological alterations was 97.1%. Family dependence was observed in 14 (40%), memory loss in 12 (34.3%), social losses in 12 (34.3%), sexual limitations in seven (20%), sadness in six (17.1%), severe speech limitation in four (11.4%), anxiety in three (8.6%), learning difficulty in two (5.7%), generalized phobia in two (5.7%), suicide ideation in one (2.6%), agoraphobia in one (2.6%), and obsessive-compulsive disorder in one (2.6%). Conclusion This study demonstrated that almost all primary antiphospholipid syndrome patients have psychological alterations. These data reinforce the need for psychological evaluation in primary antiphospholipid syndrome patients.
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Affiliation(s)
- M Sadetski
- 1 Psychological Division, 37884 Universidade de São Paulo , São Paulo, Brazil
| | | | - R P Correia de Araujo
- 2 Institute for Health Sciences, 28111 Federal University of Bahia , Salvador, Brazil
| | - J F de Carvalho
- 2 Institute for Health Sciences, 28111 Federal University of Bahia , Salvador, Brazil.,3 Rheumatology Division, Hospital das Clínicas da 37884 Faculdade de Medicina da Universidade de São Paulo , São Paulo, Brazil
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25
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Machin SJ, Mackie IJ, Cohen H, Jayakody Arachchillage DR. Diagnosis and management of non-criteria obstetric antiphospholipid syndrome. Thromb Haemost 2017; 113:13-9. [DOI: 10.1160/th14-05-0416] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Accepted: 09/05/2014] [Indexed: 01/03/2023]
Abstract
SummaryAccurate diagnosis of obstetric antiphospholipid syndrome (APS) is a prerequisite for optimal clinical management. The international consensus (revised Sapporo) criteria for obstetric APS do not include low positive anticardiolipin (aCL) and anti β2 glycoprotein I (aβ2GPI) antibodies (> 99th centile) and/or certain clinical criteria such as two unexplained miscarriages, three non-consecutive miscarriages, late preeclampsia, placental abruption, late premature birth, or two or more unexplained in vitro fertilisation failures. In this review we examine the available evidence to address the question of whether patients who exhibit non-criteria clinical and/or laboratory manifestations should be included within the spectrum of obstetric APS. Prospective and retrospective cohort studies of women with pregnancy morbidity, particularly recurrent pregnancy loss, suggest that elimination of aCL and/or IgM aβ2GPI, or low positive positive aCL or aβ2GPI from APS laboratory diagnostic criteria may result in missing the diagnosis in a sizeable number of women who could be regarded to have obstetric APS. Such prospective and retrospective studies also suggest that women with non-criteria obstetric APS may benefit from standard treatment for obstetric APS with low-molecular-weight heparin plus low-dose aspirin, with good pregnancy outcomes. Thus, non-criteria manifestations of obstetric APS may be clinically relevant, and merit investigation of therapeutic approaches. Women with obstetric APS appear to be at a higher risk than other women of pre-eclampsia, placenta- mediated complications and neonatal mortality, and also at increased long-term risk of thrombotic events. The applicability of these observations to outcomes in women with non-criteria obstetric APS remains to be determined.
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26
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Guo L, Qian P, Yang M. Determination of Immunoglobulin G by a Hemin–Manganese(IV) Oxide-Labeled Enzyme-linked Immunosorbent Assay. ANAL LETT 2017. [DOI: 10.1080/00032719.2016.1251447] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Linyan Guo
- College of Chemistry and Chemical Engineering, Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources, Central South University, Changsha, China
| | - Pin Qian
- College of Chemistry and Chemical Engineering, Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources, Central South University, Changsha, China
| | - Minghui Yang
- College of Chemistry and Chemical Engineering, Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources, Central South University, Changsha, China
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27
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Willis R, Smikle M, DeCeulaer K, Romay-Penabad Z, Papalardo E, Jajoria P, Harper B, Murthy V, Petri M, Gonzalez EB. Clinical associations of proinflammatory cytokines, oxidative biomarkers and vitamin D levels in systemic lupus erythematosus. Lupus 2017; 26:1517-1527. [PMID: 28467291 DOI: 10.1177/0961203317706557] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Background The abnormal biological activity of cytokines plays an important role in the pathophysiology of both systemic lupus erythematosus (SLE) and antiphospholipid syndrome (APS). Several studies have highlighted the association of vitamin D and certain pro-inflammatory cytokines with disease activity in SLE. However, there are limited data on the association of vitamin D and antiphospholipid antibodies (aPL) with various proinflammatory biomarkers in these patients and their relative impact on clinical outcomes. Methods The serum levels of several aPL, 25-hydroxy-vitamin D, pro-inflammatory cytokines including IFNα, IL-1β, IL-6, IL-8, IP10, sCD40L, TNFα and VEGF were measured in 312 SLE patients from the Jamaican ( n = 45) and Hopkins ( n = 267) lupus cohorts using commercial Milliplex and ELISA assays. Oxidized LDL/β2glycoprotein antigenic complexes (oxLβ2Ag) and their associated antibodies were also measured in the Jamaican cohort. Healthy controls for oxidative marker and cytokine testing were used. Results Abnormally low vitamin D levels were present in 61.4% and 73.3% of Hopkins and Jamaican SLE patients, respectively. Median concentrations of IP10, TNFα, sCD40L and VEGF were elevated in both cohorts, oxLβ2Ag and IL-6 were elevated in the Jamaican cohort, and IFNα, IL-1β and IL-8 were the same or lower in both cohorts compared to controls. IP10 and VEGF were independent predictors of disease activity, aPL, IP10 and IL-6 were independent predictors of thrombosis and IL-8, and low vitamin D were independent predictors of pregnancy morbidity despite there being no association of vitamin D with pro-inflammatory cytokines. Conclusions Our results indicate that aPL-mediated pro-inflammatory cytokine production is likely a major mechanism of thrombus development in SLE patients. We provide presumptive evidence of the role IL-8 and hypovitaminosis D play in obstetric pathology in SLE but further studies are required to characterize the subtle complexities of vitamin D's relationship with cytokine production and disease activity in these patients.
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Affiliation(s)
- R Willis
- 1 University of Texas Medical Branch, Galveston, TX, USA
| | - M Smikle
- 2 University of the West Indies, Mona Campus, Kingston, Jamaica
| | - K DeCeulaer
- 2 University of the West Indies, Mona Campus, Kingston, Jamaica
| | | | - E Papalardo
- 1 University of Texas Medical Branch, Galveston, TX, USA
| | - P Jajoria
- 1 University of Texas Medical Branch, Galveston, TX, USA.,3 Pinnacle Health Rheumatology, Lemoyne, PA, USA
| | - B Harper
- 1 University of Texas Medical Branch, Galveston, TX, USA.,4 Austin Diagnostic Clinic, Austin, TX, USA
| | - V Murthy
- 1 University of Texas Medical Branch, Galveston, TX, USA
| | - M Petri
- 5 John Hopkins University School of Medicine, Baltimore, MD, USA
| | - E B Gonzalez
- 1 University of Texas Medical Branch, Galveston, TX, USA
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28
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Cong L, Zhang F, Shang H. Notch1 targeted regulation of mir-224/LRIG2 signaling for the proliferation and apoptosis of cervical cancer cells. Oncol Lett 2017; 13:2304-2308. [PMID: 28454395 PMCID: PMC5403178 DOI: 10.3892/ol.2017.5676] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 12/07/2016] [Indexed: 11/06/2022] Open
Abstract
In the present study, we explored the participation of Notch1 targeted regulation of mir-224/LRIG2 gene signal pathway in proliferation and apoptosis of cervical cancer cells. Forty-nine cases of cervical cancer lesion samples from cervical cancer patients treated in our hospital from February 2013 to February 2015 were chosen as subjects (the observation group), and cervical samples of healthy women (42 cases) during the same period were used as the control group. We determined the mRNA and protein expression of Notch1, mir-224, and LRIG2 genes. We also analyzed the mutual relationship between Notch1 gene expression and cervical cancer. The Notch1 genes in the cervical cancer cells (HeLa) were silenced and overexpressed to measure cancer apoptosis with flow cytometry. After obstruction of the Notch1 signal pathway, the mRNA and protein expression in the mir-224 and LRIG2 genes was also measured. It was found that in comparison to the control group, Notch1 gene expression in the observation group was significantly higher (p<0.05), cell growth was suppressed in Notch1 silent cell strains but accelerated in overexpressed Notch1 cells. The silencing of Notch1 genes can lead to the reduction of mir-224/LRIG gene and protein levels, while overexpression of the Notch1 genes increased the mir-224/LRIG gene and protein levels. In conclusion, the Notch1 gene is positively related to cervical cancer and can promote the occurrence of the disease. The potential mechanism shows that Notch1 gene can regulate cervical cancer cell proliferation by regulating the mir-224/LRIG2 signal pathway.
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Affiliation(s)
- Lanxiang Cong
- Department of Gynecology and Obstetrics, Linyi People's Hospital, Linyi, Shandong 276000, P.R. China
| | - Fang Zhang
- Department of Gynecology and Obstetrics, Linyi People's Hospital, Linyi, Shandong 276000, P.R. China
| | - Huaihai Shang
- Department of Pharmacy, Linyi Cancer Hospital, Linyi, Shandong 276003, P.R. China
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29
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Fialová L, Petráčková M, Kuchař O. Comparison of different enzyme-linked immunosorbent assay methods for avidity determination of antiphospholipid antibodies. J Clin Lab Anal 2017; 31. [PMID: 28124796 DOI: 10.1002/jcla.22121] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 11/25/2016] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Avidity of antiphospholipid antibodies may be clinically useful as a valuable additional characteristic. The aim of this study was to compare several ELISA modifications with different chaotropic agents and calculation of avidity indices for the determination of anticardiolipin antibody (aCL) avidity. METHODS We examined 28 serum samples with positive IgG aCL by adapted ELISA using various concentrations of urea and sodium chloride as chaotropic agents and different dilution of sera. We tested these conditions of ELISA-a single diluted serum sample with fixed concentration of a chaotrope and a serially diluted serum in the constant concentration of a chaotropic agent. RESULTS We demonstrated that ELISA method for avidity determination based on a single dilution of serum in the presence of fixed concentration of chaotrope is convenient for determination of IgG aCL antibody avidity. Concentrations 6 and 8 mol/L of urea or 1 and 2 mol/L of NaCl were suitable for sufficient dissociation of immune complexes during ELISA procedure. CONCLUSION This way was in good agreement with more demanding procedures. Both urea and sodium chloride may be used as chaotropic agents. Reference values of avidity indices essential for interpretation of patients' results must be established individually for distinct assay conditions.
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Affiliation(s)
- Lenka Fialová
- Institute of Medical Biochemistry and Laboratory Diagnostics, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Milada Petráčková
- Institute of Medical Biochemistry and Laboratory Diagnostics, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Oliver Kuchař
- Institute of Medical Biochemistry and Laboratory Diagnostics, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
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30
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Yuan Y, Wu W, Xu S, Liu B. A biosensor based on self-clickable AIEgen: a signal amplification strategy for ultrasensitive immunoassays. Chem Commun (Camb) 2017; 53:5287-5290. [DOI: 10.1039/c7cc01093a] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A signal amplified fluorogenic ELISA based on self-clickable fluorogen with aggregation-induced emission characteristics (AIEgen) as a substrate was developed for ultrasensitive immunoassay.
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Affiliation(s)
- Youyong Yuan
- Department of Chemical and Biomolecular Engineering
- National University of Singapore
- Singapore
- Singapore
| | - Wenbo Wu
- Department of Chemical and Biomolecular Engineering
- National University of Singapore
- Singapore
- Singapore
| | - Shidang Xu
- Department of Chemical and Biomolecular Engineering
- National University of Singapore
- Singapore
- Singapore
| | - Bin Liu
- Department of Chemical and Biomolecular Engineering
- National University of Singapore
- Singapore
- Singapore
- Institute of Materials Research and Engineering
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31
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Zuo Y, Willis R, Papalardo E, Petri M, Harris EN, Schleh A, DeCeulaer K, Smikle M, Vilá LM, Reveille JD, Alarcón GS, Gonzalez EB. A unique antiphospholipid assay recognizing phospholipid mixture compared with criteria antiphospholipid immunoassays in lupus patients. Lupus 2016; 26:606-615. [PMID: 27753626 DOI: 10.1177/0961203316671812] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Background While essential for the classification of antiphospholipid syndrome (APS), anticardiolipin (aCL) assays lack specificity and anti-β2glycoproteinI (anti-β2GPI) assays lack sensitivity in this regard. Our aim was to perform a comparative analysis of the APhL ELISA assay (IgG/IgM) and criteria antiphospholipid (aPL) immunoassays in identifying APS-related clinical manifestations in a large group of patients with systemic lupus erythematosus (SLE). Methods Serum samples from 1178 patients from the Hopkins ( n = 543), LUMINA ( n = 588) and Jamaican SLE cohorts ( n = 47) were examined for IgG/IgM positivity in aCL (in-house), anti-β2GPI (two commercial kits) and APhL (Louisville APL) ELISA assays. Correlation of assay positivity with clinical manifestations and sensitivity, specificity, positive and negative predictive values and likelihood ratios were evaluated. A case series analysis was also performed in patients for whom there was isolated positivity in the specific aPL assays. Results The prevalence of aCL positivity was 34.9%, anti-β2GPI kit A was 22.6%, APhL was 11.5% and anti-β2GPI kit B was 7.6% in the study population. Anti-β2GPI kit B, aCL and APhL assays were correlated with venous thrombosis, while only APhL was significantly correlated with arterial thrombosis and consistently correlated with pregnancy-related morbidity. No significant correlations were noted for anti-β2GPI kit A. Sensitivity was greatest for aCL assays followed by anti-β2GPI kit A, APhL and anti-β2GPI kit B, while specificity was greatest and equal for anti-β2GPI kit B and APhL assays. Conclusions Overall, APhL antibodies, especially IgG, represent a promising biomarker for the classification of APS patients in the context of autoimmunity and in risk assessment with regards to pregnancy morbidity and thrombotic manifestations.
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Affiliation(s)
- Y Zuo
- 1 University of Texas Southwestern Medical Center, Texas, USA
| | - R Willis
- 2 University of Texas Medical Branch, Galveston, Texas, USA
| | - E Papalardo
- 2 University of Texas Medical Branch, Galveston, Texas, USA
| | - M Petri
- 3 John Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - E N Harris
- 4 University of the West Indies, Mona Campus, Kingston, Jamaica
| | - A Schleh
- 2 University of Texas Medical Branch, Galveston, Texas, USA
| | - K DeCeulaer
- 4 University of the West Indies, Mona Campus, Kingston, Jamaica
| | - M Smikle
- 4 University of the West Indies, Mona Campus, Kingston, Jamaica
| | - L M Vilá
- 5 Division of Rheumatology, University of Puerto Rico Medical Sciences Campus, San Juan, Puerto Rico
| | - J D Reveille
- 6 University of Texas School of Medicine at Houston, Texas, USA
| | - G S Alarcón
- 7 University of Alabama at Birmingham, Alabama, USA
| | - E B Gonzalez
- 2 University of Texas Medical Branch, Galveston, Texas, USA
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32
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Sun J, Hu T, Xu X, Wang L, Yang X. A fluorescent ELISA based on the enzyme-triggered synthesis of poly(thymine)-templated copper nanoparticles. NANOSCALE 2016; 8:16846-16850. [PMID: 27714143 DOI: 10.1039/c6nr06446a] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Inspired by the ALP-triggered hydrolysis of the substrate ascorbic acid 2-phosphate as well as the product ascorbate-controlled generation of polyT-CuNPs with bright red fluorescence, we have developed a novel, selective and sensitive fluorescence turn-on assay for ALP activity sensing. Based on the conventional ELISA platform and commercially available antibody-ALP conjugates, an unconventional fluorescent ELISA system has been rationally developed and successfully applied in the quantitative measurement of model antigen proteins using fluorescence spectroscopy and a naked-eye readout under ultraviolet light.
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Affiliation(s)
- Jian Sun
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China.
| | - Tao Hu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China. and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Xiaolong Xu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China.
| | - Lei Wang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China.
| | - Xiurong Yang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China.
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33
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Sun J, Hu T, Chen C, Zhao D, Yang F, Yang X. Fluorescence Immunoassay System via Enzyme-Enabled in Situ Synthesis of Fluorescent Silicon Nanoparticles. Anal Chem 2016; 88:9789-9795. [DOI: 10.1021/acs.analchem.6b02847] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Jian Sun
- State
Key Laboratory of Electroanalytical Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
| | - Tao Hu
- State
Key Laboratory of Electroanalytical Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
- Department
of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Chuanxia Chen
- State
Key Laboratory of Electroanalytical Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Dan Zhao
- State
Key Laboratory of Electroanalytical Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fan Yang
- State
Key Laboratory of Electroanalytical Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
| | - Xiurong Yang
- State
Key Laboratory of Electroanalytical Chemistry, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China
- Department
of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
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34
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Kim D, Garner OB, Ozcan A, Di Carlo D. Homogeneous Entropy-Driven Amplified Detection of Biomolecular Interactions. ACS NANO 2016; 10:7467-75. [PMID: 27462995 DOI: 10.1021/acsnano.6b02060] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
While a range of artificial biochemical circuits is likely to play a significant role in biological engineering, one of the challenges in the field is the design of circuits that can transduce between biomolecule classes (e.g., moving beyond nucleic acid only circuits). Herein, we design a transduction mechanism whereby a protein signal is transduced into an amplified nucleic acid output using DNA nanotechnology. In this system, a protein is recognized by nucleic acid bound recognition elements to form a catalytic complex that drives a hybridization/displacement reaction on a multicomponent nucleic acid substrate, releasing multiple target single-stranded oligonucleotides in an amplified fashion. Amplification power and simple one-pot reaction conditions lead us to apply the scheme in an assay format, achieving homogeneous and rapid (∼10 min) analyte detection that is also robust (operable in whole blood and plasma). In addition, we demonstrate the assay in a microfluidic digital assay format leading to improved quantification and sensitivity approaching single-molecule levels. The present scheme we believe will have a significant impact on a range of applications from fundamental molecular interaction studies to design of artificial circuits in vivo to high-throughput, multiplexed assays for screening or point-of-care diagnostics.
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Affiliation(s)
- Donghyuk Kim
- Department of Bioengineering, ‡Department of Pathology & Laboratory Medicine, §Department of Electrical Engineering, ∥California NanoSystems Institute, and ⊥Jonsson Comprehensive Cancer Center, University of California, Los Angeles , Los Angeles, California 90095, United States
| | - Omai B Garner
- Department of Bioengineering, ‡Department of Pathology & Laboratory Medicine, §Department of Electrical Engineering, ∥California NanoSystems Institute, and ⊥Jonsson Comprehensive Cancer Center, University of California, Los Angeles , Los Angeles, California 90095, United States
| | - Aydogan Ozcan
- Department of Bioengineering, ‡Department of Pathology & Laboratory Medicine, §Department of Electrical Engineering, ∥California NanoSystems Institute, and ⊥Jonsson Comprehensive Cancer Center, University of California, Los Angeles , Los Angeles, California 90095, United States
| | - Dino Di Carlo
- Department of Bioengineering, ‡Department of Pathology & Laboratory Medicine, §Department of Electrical Engineering, ∥California NanoSystems Institute, and ⊥Jonsson Comprehensive Cancer Center, University of California, Los Angeles , Los Angeles, California 90095, United States
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35
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Samuelsen SV, Maity A, Nybo M, Macaubas C, Lønstrup L, Balboni IM, Mellins ED, Astakhova K. Novel Phospholipid-Protein Conjugates Allow Improved Detection of Antibodies in Patients with Autoimmune Diseases. PLoS One 2016; 11:e0156125. [PMID: 27257889 PMCID: PMC4892602 DOI: 10.1371/journal.pone.0156125] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 05/10/2016] [Indexed: 01/08/2023] Open
Abstract
Reliable measurement of clinically relevant autoimmune antibodies toward phospholipid-protein conjugates is highly desirable in research and clinical assays. To date, the development in this field has been limited to the use of natural heterogeneous antigens. However, this approach does not take structural features of biologically active antigens into account and leads to low reliability and poor scientific test value. Here we describe novel phospholipid-protein conjugates for specific detection of human autoimmune antibodies. Our synthetic approach includes mild oxidation of synthetic phospholipid cardiolipin, and as the last step, coupling of the product with azide-containing linker and copper-catalyzed click chemistry with β2-glycoprotein I and prothrombin. To prove utility of the product antigens, we used enzyme-linked immunosorbent assay and three cohorts of samples obtained from patients in Denmark (n = 34) and the USA (n = 27 and n = 14). Afterwards we analyzed correlation of the obtained autoantibody titers with clinical parameters for each patient. Our results prove that using novel antigens clinically relevant autoantibodies can be detected with high repeatability, sensitivity and specificity. Unlike previously used antigens the obtained autoantibody titers strongly correlate with high disease activity and in particular, with arthritis, renal involvement, anti-Smith antibodies and high lymphocyte count. Importantly, chemical composition of antigens has a strong influence on the correlation of detected autoantibodies with disease activity and manifestations. This confirms the crucial importance of antigens’ composition on research and diagnostic assays, and opens up exciting perspectives for synthetic antigens in future studies of autoimmunity.
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Affiliation(s)
- Simone V. Samuelsen
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Odense, Denmark
| | - Arindam Maity
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Odense, Denmark
| | - Mads Nybo
- Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, Odense, Denmark
| | - Claudia Macaubas
- Department of Pediatrics, Program in Immunology, Stanford University, Stanford, California, United States of America
| | - Lars Lønstrup
- Department of Business and Economics, University of Southern Denmark, Odense, Denmark
| | - Imelda M. Balboni
- Department of Pediatrics, Program in Immunology, Stanford University, Stanford, California, United States of America
| | - Elizabeth D. Mellins
- Department of Pediatrics, Program in Immunology, Stanford University, Stanford, California, United States of America
| | - Kira Astakhova
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Odense, Denmark
- * E-mail:
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36
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Pericleous C, Ferreira I, Borghi O, Pregnolato F, McDonnell T, Garza-Garcia A, Driscoll P, Pierangeli S, Isenberg D, Ioannou Y, Giles I, Meroni PL, Rahman A. Measuring IgA Anti-β2-Glycoprotein I and IgG/IgA Anti-Domain I Antibodies Adds Value to Current Serological Assays for the Antiphospholipid Syndrome. PLoS One 2016; 11:e0156407. [PMID: 27253369 PMCID: PMC4890741 DOI: 10.1371/journal.pone.0156407] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 05/14/2016] [Indexed: 01/06/2023] Open
Abstract
Introduction Currently available clinical assays to detect antiphospholipid antibodies (aPL) test for IgG and IgM antibodies to cardiolipin (aCL) and β2-glycoprotein I (aβ2GPI). It has been suggested that testing for IgA aPL and for antibodies to Domain I (DI), which carries the key antigenic epitopes of β2GPI, could add value to these current tests. We performed an observational, multicenter cohort study to evaluate the utility of IgG, IgM and IgA assays to each of CL, β2GPI and DI in APS. Methods Serum from 230 patients with APS (n = 111), SLE but not APS (n = 119), and 200 healthy controls were tested for IgG, IgM and IgA aCL, aβ2GPI and aDI activity. Patients with APS were further classified into thrombotic or obstetric APS. Logistic regression and receiver operator characteristic analyses were employed to compare results from the nine different assays. Results All assays displayed good specificity for APS; IgG aCL and IgG aβ2GPI assays however, had the highest sensitivity. Testing positive for IgA aβ2GPI resulted in a higher hazard ratio for APS compared to IgM aβ2GPI. Positive IgG, IgM or IgA aDI were all associated with APS, and in subjects positive for aCL and/or aβ2GPI, the presence of aDI raised the hazard ratio for APS by 3–5 fold. IgG aCL, aβ2GPI, aDI and IgA aDI were associated with thrombotic but not obstetric complications in patients with APS. Conclusion Measuring IgG aDI and IgA aβ2GPI and aDI may be useful in the management of patients with APS, particularly thrombotic APS.
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Affiliation(s)
- Charis Pericleous
- Centre for Rheumatology Research, Division of Medicine, University College London, London, United Kingdom
| | - Isabel Ferreira
- Centre for Rheumatology Research, Division of Medicine, University College London, London, United Kingdom
| | - Orietta Borghi
- Laboratory of Immuno-rheumatology, IRCCS Istituto Auxologico Italiano, Milan, Italy
| | - Francesca Pregnolato
- Laboratory of Immuno-rheumatology, IRCCS Istituto Auxologico Italiano, Milan, Italy
| | - Thomas McDonnell
- Centre for Rheumatology Research, Division of Medicine, University College London, London, United Kingdom
| | - Acely Garza-Garcia
- Structural Biology, MRC National Institute for Medical Research, London, United Kingdom
| | - Paul Driscoll
- Structural Biology, MRC National Institute for Medical Research, London, United Kingdom
| | - Silvia Pierangeli
- Division of Rheumatology, Department of Internal Medicine, University of Texas Medical Branch, Galveston, Texas, United States of America
| | - David Isenberg
- Centre for Rheumatology Research, Division of Medicine, University College London, London, United Kingdom
| | - Yiannis Ioannou
- Centre for Rheumatology Research, Division of Medicine, University College London, London, United Kingdom.,Arthritis Research UK Centre for Adolescent Rheumatology, UCL Hospital and Great Ormond Street Hospital, London, United Kingdom
| | - Ian Giles
- Centre for Rheumatology Research, Division of Medicine, University College London, London, United Kingdom
| | - Pier Luigi Meroni
- Laboratory of Immuno-rheumatology, IRCCS Istituto Auxologico Italiano, Milan, Italy
| | - Anisur Rahman
- Centre for Rheumatology Research, Division of Medicine, University College London, London, United Kingdom
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Evasion of affinity-based selection in germinal centers by Epstein-Barr virus LMP2A. Proc Natl Acad Sci U S A 2015; 112:11612-7. [PMID: 26305967 DOI: 10.1073/pnas.1514484112] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Epstein-Barr virus (EBV) infects germinal center (GC) B cells and establishes persistent infection in memory B cells. EBV-infected B cells can cause B-cell malignancies in humans with T- or natural killer-cell deficiency. We now find that EBV-encoded latent membrane protein 2A (LMP2A) mimics B-cell antigen receptor (BCR) signaling in murine GC B cells, causing altered humoral immune responses and autoimmune diseases. Investigation of the impact of LMP2A on B-cell differentiation in mice that conditionally express LMP2A in GC B cells or all B-lineage cells found LMP2A expression enhanced not only BCR signals but also plasma cell differentiation in vitro and in vivo. Conditional LMP2A expression in GC B cells resulted in preferential selection of low-affinity antibody-producing B cells despite apparently normal GC formation. GC B-cell-specific LMP2A expression led to systemic lupus erythematosus-like autoimmune phenotypes in an age-dependent manner. Epigenetic profiling of LMP2A B cells found increased H3K27ac and H3K4me1 signals at the zinc finger and bric-a-brac, tramtrack domain-containing protein 20 locus. We conclude that LMP2A reduces the stringency of GC B-cell selection and may contribute to persistent EBV infection and pathogenesis by providing GC B cells with excessive prosurvival effects.
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Romay-Penabad Z, Carrera Marin AL, Willis R, Weston-Davies W, Machin S, Cohen H, Brasier A, Gonzalez EB. Complement C5-inhibitor rEV576 (coversin) ameliorates in-vivo effects of antiphospholipid antibodies. Lupus 2015; 23:1324-6. [PMID: 25228739 DOI: 10.1177/0961203314546022] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Activation of the complement cascade is an important mechanism for antiphospholipid antibody-mediated thrombosis. We examined the effects of rEV576 (coversin), a recombinant protein inhibitor of complement factor 5 activation, on antiphospholipid antibody-mediated tissue factor up-regulation and thrombosis. Groups of C57BL/6J mice (n=5) received either IgG from a patient with antiphospholipid syndrome (APS) or control IgG from normal human serum (NHS). Each of these groups of mice had IgG administration preceded by either rEV576, or phosphate buffer control. For each of the four treatment groups, the size of induced thrombus, tissue factor activity in carotid homogenates, anticardiolipin and anti-β2glycoprotein I (anti-β2GPI) levels were measured 72 h after the first injection. Mice treated with IgG-APS had significantly higher titers of anticardiolipin antibodies and anti-β2GPI at thrombus induction compared with those treated with IgG-NHS. The IgG-APS/phosphate buffer treatment induced significantly larger thrombi and tissue factor activity compared with other groups. Mice treated with IgG-APS/rEV576 had significantly smaller thrombi and reduced tissue factor activity than those treated with IgG-APS/phosphate buffer. The data confirm involvement of complement activation in antiphospholipid antibody-mediated thrombogenesis and suggest that complement inhibition might ameliorate this effect.
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Affiliation(s)
| | | | - R Willis
- University of Texas Medical Branch, Galveston, USA
| | | | - S Machin
- University College London, London, UK
| | - H Cohen
- University College London, London, UK
| | - A Brasier
- University of Texas Medical Branch, Galveston, USA
| | - E B Gonzalez
- University of Texas Medical Branch, Galveston, USA
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Charlton JJ, Jones NC, Wallace RA, Smithwick RW, Bradshaw JA, Kravchenko II, Lavrik NV, Sepaniak MJ. Nanopillar Based Enhanced-Fluorescence Detection of Surface-Immobilized Beryllium. Anal Chem 2015; 87:6814-21. [PMID: 26041094 DOI: 10.1021/acs.analchem.5b01035] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The unique properties associated with beryllium metal ensures the continued use in many industries despite the documented health and environmental risks. While engineered safeguards and personal protective equipment can reduce risks associated with working with the metal, it has been mandated by the Environmental Protection Agency (EPA) and Occupational Safety and Health Administration (OSHA) that the workplace air and surfaces must be monitored for toxic levels. While many methods have been developed to monitor levels down to the low μg/m(3), the complexity and expense of these methods have driven the investigation into alternate methodologies. Herein, we use a combination of the previously developed fluorescence Be(II) ion detection reagent, 10-hydroxybenzo[h]quinoline (HBQ), with an optical field enhanced silicon nanopillar array, creating a new surface immobilized (si-HBQ) platform. The si-HBQ platform allows the positive control of the reagent for demonstrated reusability and a pillar diameter based tunable enhancement. Furthermore, native silicon nanopillars are overcoated with thin layers of porous silicon oxide to develop an analytical platform capable of a 0.0006 μg/L limit of detection (LOD) using sub-μL sample volumes. Additionally, we demonstrate a method to multiplex the introduction of the sample to the platform, with minimal 5.2% relative standard deviation (RSD) at 0.1 μg/L, to accommodate the potentially large number of samples needed to maintain industrial compliance. The minimal sample and reagent volumes and lack of complex and highly specific instrumentation, as well as positive control and reusability of traditionally consumable reagents, create a platform that is accessible and economically advantageous.
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Affiliation(s)
- Jennifer J Charlton
- †The University of Tennessee Knoxville, Department of Chemistry, Knoxville, Tennessee 37996, United States.,‡Y-12 National Security Complex, Analytical Chemistry Organization, Oak Ridge, Tennessee 37830, United States
| | - Natalie C Jones
- ‡Y-12 National Security Complex, Analytical Chemistry Organization, Oak Ridge, Tennessee 37830, United States.,∥Northern Arizona University, College of Engineering, Forestry, and Natural Sciences, Flagstaff, Arizona 86011, United States
| | - Ryan A Wallace
- †The University of Tennessee Knoxville, Department of Chemistry, Knoxville, Tennessee 37996, United States
| | - Robert W Smithwick
- ‡Y-12 National Security Complex, Analytical Chemistry Organization, Oak Ridge, Tennessee 37830, United States
| | - James A Bradshaw
- †The University of Tennessee Knoxville, Department of Chemistry, Knoxville, Tennessee 37996, United States.,‡Y-12 National Security Complex, Analytical Chemistry Organization, Oak Ridge, Tennessee 37830, United States
| | - Ivan I Kravchenko
- §The Center for Nanophase Material Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
| | - Nickolay V Lavrik
- §The Center for Nanophase Material Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
| | - Michael J Sepaniak
- †The University of Tennessee Knoxville, Department of Chemistry, Knoxville, Tennessee 37996, United States
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Maity A, Macaubas C, Mellins E, Astakhova K. Synthesis of Phospholipid-Protein Conjugates as New Antigens for Autoimmune Antibodies. Molecules 2015; 20:10253-63. [PMID: 26046322 PMCID: PMC6272759 DOI: 10.3390/molecules200610253] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Revised: 05/27/2015] [Accepted: 05/28/2015] [Indexed: 12/24/2022] Open
Abstract
Copper(I)-catalyzed azide-alkyne cycloaddition, or CuAAC click chemistry, is an efficient method for bioconjugation aiming at chemical and biological applications. Herein, we demonstrate how the CuAAC method can provide novel phospholipid-protein conjugates with a high potential for the diagnostics and therapy of autoimmune conditions. In doing this, we, for the first time, covalently bind via 1,2,3-triazole linker biologically complementary molecules, namely phosphoethanol amine with human β2-glycoprotein I and prothrombin. The resulting phospholipid-protein conjugates show high binding affinity and specificity for the autoimmune antibodies against autoimmune complexes. Thus, the development of this work might become a milestone in further diagnostics and therapy of autoimmune diseases that involve the production of autoantibodies against the aforementioned phospholipids and proteins, such as antiphospholipid syndrome and systemic lupus erythematosus.
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Affiliation(s)
- Arindam Maity
- Nucleic Acid Center, Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, Odense 5230, Denmark.
- Dr. B C Roy College of Pharmacy and AHS, Durgapur, West Bengal 713212, India.
| | - Claudia Macaubas
- Divisions of Human Gene Therapy and Pediatric Rheumatology, Program in Immunology, Stanford University School of Medicine, 269 Campus Drive, Stanford, MC 5164, USA.
| | - Elizabeth Mellins
- Divisions of Human Gene Therapy and Pediatric Rheumatology, Program in Immunology, Stanford University School of Medicine, 269 Campus Drive, Stanford, MC 5164, USA.
| | - Kira Astakhova
- Nucleic Acid Center, Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, Odense 5230, Denmark.
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Hu Z, Chen Z, Huang N, Teng X, Zhang J, Wang Z, Wei X, Qin K, Liu X, Wu X, Tang H, Zhu X, Cui K, Li J. Expression, purification of IL-38 in Escherichia coli and production of polyclonal antibodies. Protein Expr Purif 2015; 107:76-82. [DOI: 10.1016/j.pep.2014.10.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Revised: 10/28/2014] [Accepted: 10/30/2014] [Indexed: 12/31/2022]
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Devreese KMJ. Antiphospholipid antibody testing and standardization. Int J Lab Hematol 2014; 36:352-63. [PMID: 24750682 DOI: 10.1111/ijlh.12234] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Accepted: 03/12/2014] [Indexed: 11/28/2022]
Abstract
The laboratory criteria that define patients with antiphospholipid syndrome (APS) include lupus anticoagulant (LAC), anticardiolipin antibodies and anti-β2 glycoprotein I antibodies (aβ2GPI). All assays show methodological shortcomings and the combination of the three tests, each with different sensitivity and specificity, and hence, differences in clinical utility make the laboratory diagnosis of APS challenging. Consensus guidelines and proposals for antiphospholipid antibodies (aPL) testing have been published in the last 20 years and have led to a substantial improvement. Despite efforts so far, standardization is not reached yet, but progress has been made. On-going efforts to reduce the interlaboratory/interassay variations remain important; even an absolute standardization cannot be feasibly achieved. Taking into account the methodological shortcomings of the means we have available, more detailed guidelines may help in adequate performance of aPL testing. This review will focus on the efforts and achievements in standardization and on the weaknesses and strengths of the current available laboratory methods.
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Affiliation(s)
- K M J Devreese
- Coagulation Laboratory, Department of Clinical Chemistry, Microbiology and Immunology, Ghent University Hospital, Ghent, Belgium
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Fialová L, Malbohan I, Malíčková K. Avidity of anticardiolipin antibodies-A factor that could be important for their detection by ELISA methods. J Appl Biomed 2014. [DOI: 10.1016/j.jab.2014.01.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Pericleous C, Ripoll VM, Giles I, Ioannou Y. Laboratory tests for the antiphospholipid syndrome. Methods Mol Biol 2014; 1134:221-35. [PMID: 24497366 DOI: 10.1007/978-1-4939-0326-9_17] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
Antiphospholipid syndrome (APS) is an autoimmune disorder characterized by recurrent vascular thrombosis (VT) and/or pregnancy morbidity (PM) in the presence of persistent antiphospholipid antibodies (aPL), detected by lupus anticoagulant (LA), anticardiolipin (aCL) antibody, and/or anti-β₂ glycoprotein I (aβ₂GPI) antibody assays. These aPL, considered to be diagnostic markers and pathogenic drivers of APS, are a heterogeneous group of antibodies directed against anionic phospholipids, phospholipid-binding plasma proteins, and phospholipid-protein complexes. Although APS is currently considered as a single disease, it presents with a wide range of clinical symptoms and biological characteristics. The clinical diagnosis of APS in a patient with symptoms and signs is dependent upon the presence of a persistently positive result in an aPL assay. The tests recommended for detecting aPL are the standardized enzyme-linked immunosorbent assay (ELISA) to detect aCL and aβ₂GPI and clotting assays for LA performed according to the guidelines of the International Society on Thrombosis and Haemostasis. This chapter describes the standard laboratory test for the diagnosis of APS discussing the clinical and theoretical aspects of LA, aCL, and aβ₂GPI assays.
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Ng A, Weeks-Galindo C, Goodridge A. Storage in ultra-low-temperature decreases the levels of IgM anticardiolipin antibody in serum samples from tuberculosis patients. Ther Adv Respir Dis 2014; 8:93-95. [PMID: 24902986 DOI: 10.1177/1753465814534911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The evaluation of novel tuberculosis (TB) biomarkers relies on analysis of previously stored sample sets. We aimed to determine the effect of storage temperature on serum IgM anticardiolipin antibody levels in samples from TB patients. Ultra-low-temperature storage decreased IgM anticardiolipin levels. We recommend against using ultra-low-temperature storage when investigating IgM anticardiolipin biomarker-based tests.
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Affiliation(s)
| | - Cheyenne Weeks-Galindo
- Instituto de Investigaciones Científicas y Servicios de Alta Tecnología, INDICASAT-AIP, City of Knowledge, Panama
| | - Amador Goodridge
- Instituto de Investigaciones Científicas y Servicios de Alta Tecnología, INDICASAT-AIP,Edificio 219, City of Knowledge, 0843-01103, Panama
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Devreese KMJ, Pierangeli SS, de Laat B, Tripodi A, Atsumi T, Ortel TL. Testing for antiphospholipid antibodies with solid phase assays: guidance from the SSC of the ISTH. J Thromb Haemost 2014; 12:792-5. [PMID: 24589091 DOI: 10.1111/jth.12537] [Citation(s) in RCA: 146] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Accepted: 02/12/2014] [Indexed: 11/28/2022]
Affiliation(s)
- K M J Devreese
- Coagulation Laboratory, Department of Clinical Chemistry, Microbiology and Immunology, Ghent University Hospital, Ghent, Belgium
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Pradella P, Azzarini G, Santarossa L, Caberlotto L, Bardin C, Poz A, D'Aurizio F, Giacomello R. Cooperation experience in a multicentre study to define the upper limits in a normal population for the diagnostic assessment of the functional lupus anticoagulant assays. Clin Chem Lab Med 2014; 51:379-85. [PMID: 23001319 DOI: 10.1515/cclm-2012-0382] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Accepted: 08/20/2012] [Indexed: 12/31/2022]
Abstract
BACKGROUND Phospholipid-dependent coagulation tests for lupus anticoagulant (LA) are considered an important step for the diagnosis of anti-phospholipid syndrome; however, LA laboratory detection is difficult because of many variables. Five hospital laboratories, located in a North-Italy area and using the same method for LA testing, cooperated to standardise sample treatment and analytical procedure in order to define the upper values for LA negativity. METHODS In total, 200 normal subjects (40 for each centre) were studied for six LA functional assays, using the same procedure, reagent lot and analyser type. The first tests done were LA screen and LA confirm assays, based on diluted Russell's Viper Venom Time, with low and high phospholipid content, respectively. The second tests performed were silica clotting time screen and confirm assays, based on activated partial thromboplastin time, with low and high phospholipid content, respectively. Finally, two mixing assays were executed for both screening assays, diluting patient sample with a pool prepared with plasma collected from the study population. RESULTS Data analysis demonstrated a difference between centres for all assays when results were expressed in seconds; the difference disappeared when results are normalised with the local mean normal value of each centre and are expressed as a normalised ratio. The study population was normally distributed; so the value corresponding to 99th percentile was used as limit value for LA negativity. Values expressed as normalised ratio, for LA and silica clotting time screenings were 1.22 and 1.23, respectively. CONCLUSIONS The study allowed us to define a uniform approach to LA testing and evaluation for laboratories employing the same methods.
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Affiliation(s)
- Paola Pradella
- Haemostasis Laboratory, Department of Transfusion Medicine, AOUTs Ospedali riuniti, University Hospital of Cattinara, Strada di Fiume 447, 34149 Trieste, Italy.
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Murthy V, Willis R, Romay-Penabad Z, Ruiz-Limón P, Martínez-Martínez LA, Jatwani S, Jajoria P, Seif A, Alarcón GS, Papalardo E, Liu J, Vilá LM, McGwin G, McNearney TA, Maganti R, Sunkureddi P, Parekh T, Tarantino M, Akhter E, Fang H, Gonzalez EB, Binder WR, Norman GL, Shums Z, Teodorescu M, Reveille JD, Petri M, Pierangeli SS. Value of isolated IgA anti-β2 -glycoprotein I positivity in the diagnosis of the antiphospholipid syndrome. ACTA ACUST UNITED AC 2014; 65:3186-93. [PMID: 23983008 DOI: 10.1002/art.38131] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Accepted: 08/06/2013] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To examine the prevalence of isolated IgA anti-β2 -glycoprotein I (anti-β2 GPI) positivity and the association of these antibodies, and a subgroup that bind specifically to domain IV/V of β2 GPI, with clinical manifestations of the antiphospholipid syndrome (APS) in 3 patient groups and to evaluate the pathogenicity of IgA anti-β2 GPI in a mouse model of thrombosis. METHODS Patients with systemic lupus erythematosus (SLE) from a multiethnic, multicenter cohort (LUpus in MInorities, NAture versus nurture [LUMINA]) (n = 558), patients with SLE from the Hopkins Lupus Cohort (n = 215), and serum samples referred to the Antiphospholipid Standardization Laboratory (APLS) (n = 5,098) were evaluated. IgA anti-β2 GPI titers and binding to domain IV/V of β2 GPI were examined by enzyme-linked immunosorbent assay (ELISA). CD1 mice were inoculated with purified IgA anti-β2 GPI antibodies, and surgical procedures and ELISAs were performed to evaluate thrombus development and tissue factor (TF) activity. RESULTS A total of 198 patients were found to be positive for IgA anti-β2 GPI isotype, and 57 patients were positive exclusively for IgA anti-β2 GPI antibodies. Of these, 13 of 23 patients (56.5%) in the LUMINA cohort, 17 of 17 patients (100%) in the Hopkins cohort, and 10 of 17 patients (58.9%) referred to APLS had at least one APS-related clinical manifestation. Fifty-four percent of all the IgA anti-β2 GPI-positive serum samples reacted with domain IV/V of anti-β2 GPI, and 77% of those had clinical features of APS. Isolated IgA anti-β2 GPI positivity was associated with an increased risk of arterial thrombosis (P < 0.001), venous thrombosis (P = 0.015), and all thrombosis (P < 0.001). The association between isolated IgA anti-β2 GPI and arterial thrombosis (P = 0.0003) and all thrombosis (P = 0.0003) remained significant after adjusting for other risk factors for thrombosis. In vivo mouse studies demonstrated that IgA anti-β2 GPI antibodies induced significantly larger thrombi and higher TF levels compared to controls. CONCLUSION Isolated IgA anti-β2 GPI-positive titers may identify additional patients with clinical features of APS. Testing for these antibodies when other antiphospholipid tests are negative and APS is suspected is recommended. IgA anti-β2 GPI antibodies directed to domain IV/V of β2 GPI represent an important subgroup of clinically relevant antiphospholipids.
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Forastiero R, Papalardo E, Watkins M, Nguyen H, Quirbach C, Jaskal K, Kast M, Teodorescu M, Lakos G, Binder W, Shums Z, Nelson V, Norman G, Puig J, Cox A, Vandam W, Hardy J, Pierangeli S. Evaluation of different immunoassays for the detection of antiphospholipid antibodies: Report of a wet workshop during the 13th International Congress on Antiphospholipid Antibodies. Clin Chim Acta 2014; 428:99-105. [DOI: 10.1016/j.cca.2013.11.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2013] [Revised: 11/05/2013] [Accepted: 11/06/2013] [Indexed: 01/04/2023]
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Clinical performance of anticardiolipin and antiβ2 glycoprotein I antibodies using a new automated chemiluminescent assay. Blood Coagul Fibrinolysis 2014; 25:10-5. [DOI: 10.1097/mbc.0b013e32836466b5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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