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Hong X, Yan H, Xie F, Wang K, Wang Q, Huang H, Yang K, Huang S, Zhao T, Wang J, Chen Y, Liu K, Lan X. Development of a novel ssDNA aptamer targeting neutrophil gelatinase-associated lipocalin and its application in clinical trials. J Transl Med 2019; 17:204. [PMID: 31215436 PMCID: PMC6582607 DOI: 10.1186/s12967-019-1955-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 06/13/2019] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Neutrophil gelatinase-associated lipocalin (NGAL) is a promising biomarker of early diagnosis and prediction for acute kidney injury (AKI). However, the current program for NGAL detection is not extensively applied in clinics due to the high expense of antibodies. Nucleic acid aptamers are single-strand DNAs or RNAs which could bind to targets with high specificity and affinity, and they have been widely used in the diagnosis and therapy for multiple diseases. It is valuable for us to develop a new method for NGAL detection using aptamers instead of antibodies to achieve increased efficiency and decreased cost. METHODS Nucleic acid aptamers against NGAL were obtained after SELEX process using magnetic beads, and an enzyme-linked aptamer analysis (ELAA), which can be widely used in clinical diagnosis at low cost, were successfully established. The feasibility of ELAA was further validated with urine samples harvested from 43 AKI patients and 30 healthy people. RESULTS Three candidate aptamers, including NA36, NA42 and NA53, were obtained after 8 rounds of SELEX process with magnetic beads and verified by quantitative polymerase chain reaction (qPCR), and the Kd value of each aptamer was 43.59, 66.55 and 32.52 nM, respectively. Moreover, the linear relationship was consistent at the range of 125-4000 ng/mL, and the detection limit of ELAA assay was 30.45 ng/mL. We also found that NGAL could be exclusively detected with NA53, and no cross-reaction between NA53 and human albumin or globulin occurred, the coefficient of variation (CV) between inner-plate and inter-plate was less than 15%, and the recovery rate was between 80 and 110%. Moreover, the sensitivity and specificity of ELAA assay in this study are 100% and 90%, respectively. Consistently, these results could also diagnose whether the occurrence of AKI in lots of patients, which has been demonstrated with the ELAA method we established after using NA53. CONCLUSIONS Taken together, NA53, the best candidate aptamer targeting NGAL protein, can be applied in clinical testing.
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Affiliation(s)
- Xiaoqian Hong
- Institute for Laboratory Medicine, 900 Hospital of the Joint Logistics Team, Navy Medical University (Second Military Medical University) or Dongfang Hospital, Fuzhou, 350025, Fujian, China.,Department of Laboratory Medicine, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361102, Fujian, China
| | - Huihui Yan
- Institute for Laboratory Medicine, 900 Hospital of the Joint Logistics Team, Navy Medical University (Second Military Medical University) or Dongfang Hospital, Fuzhou, 350025, Fujian, China
| | - Fuan Xie
- Institute for Laboratory Medicine, 900 Hospital of the Joint Logistics Team, Navy Medical University (Second Military Medical University) or Dongfang Hospital, Fuzhou, 350025, Fujian, China
| | - Kaiyu Wang
- Institute for Laboratory Medicine, 900 Hospital of the Joint Logistics Team, Navy Medical University (Second Military Medical University) or Dongfang Hospital, Fuzhou, 350025, Fujian, China
| | - Qiang Wang
- Department of Nephrology, 900 Hospital of the Joint Logistics Team, Fuzhou, 350025, Fujian, China
| | - Huijuan Huang
- Department of Gynaecology and Obstetrics, 900 Hospital of the Joint Logistics Team or Dongfang Hospital, Fuzhou, 350025, Fujian, China
| | - Kunrong Yang
- Institute for Laboratory Medicine, 900 Hospital of the Joint Logistics Team, Navy Medical University (Second Military Medical University) or Dongfang Hospital, Fuzhou, 350025, Fujian, China.,Fujian Medical University, Fuzhou, 350025, Fujian, China
| | - Suhong Huang
- Department of Laboratory Medicine, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361102, Fujian, China
| | - Tingting Zhao
- Institute for Laboratory Medicine, 900 Hospital of the Joint Logistics Team, Navy Medical University (Second Military Medical University) or Dongfang Hospital, Fuzhou, 350025, Fujian, China.,School of Medicine, Xiamen University, Xiamen, 361102, Fujian, China
| | - Junkai Wang
- School of Life Science, Xiamen University, Xiamen, 361102, Fujian, China
| | - Yunyun Chen
- Institute for Laboratory Medicine, 900 Hospital of the Joint Logistics Team, Navy Medical University (Second Military Medical University) or Dongfang Hospital, Fuzhou, 350025, Fujian, China.,School of Medicine, Xiamen University, Xiamen, 361102, Fujian, China
| | - Kuancan Liu
- Institute for Laboratory Medicine, 900 Hospital of the Joint Logistics Team, Navy Medical University (Second Military Medical University) or Dongfang Hospital, Fuzhou, 350025, Fujian, China. .,School of Medicine, Xiamen University, Xiamen, 361102, Fujian, China. .,Fujian Medical University, Fuzhou, 350025, Fujian, China.
| | - Xiaopeng Lan
- Institute for Laboratory Medicine, 900 Hospital of the Joint Logistics Team, Navy Medical University (Second Military Medical University) or Dongfang Hospital, Fuzhou, 350025, Fujian, China.
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Bchir S, Nasr HB, Bouchet S, Benzarti M, Garrouch A, Tabka Z, Susin S, Chahed K, Bauvois B. Concomitant elevations of MMP-9, NGAL, proMMP-9/NGAL and neutrophil elastase in serum of smokers with chronic obstructive pulmonary disease. J Cell Mol Med 2016; 21:1280-1291. [PMID: 28004483 PMCID: PMC5487915 DOI: 10.1111/jcmm.13057] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Accepted: 11/10/2016] [Indexed: 12/22/2022] Open
Abstract
A growing body of evidence points towards smoking‐related phenotypic differences in chronic obstructive pulmonary disease (COPD). As COPD is associated with systemic inflammation, we determined whether smoking status is related to serum levels of matrix metalloproteinase‐9 (pro‐ and active MMP‐9), neutrophil gelatinase‐associated lipocalin (NGAL) and the proMMP‐9/NGAL complex in patients with COPD. Serum samples were collected in 100 stable‐phase COPD patients (82 smokers, 18 never‐smokers) and 28 healthy adults (21 smokers, 7 never‐smokers). Serum levels of studied factors were measured in ELISA. Our data provide the first evidence of simultaneously elevated serum levels of MMP‐9, NGAL and proMMP‐9/NGAL in COPD smokers. While the triad discriminated between smokers and non‐smokers in the COPD group, MMP‐9 and proMMP‐9/NGAL (but not NGAL) discriminated between smokers with and without COPD. Adjustment for age and smoking pack‐years did not alter the findings. Serum MMP‐9, NGAL and proMMP‐9/NGAL levels were not correlated with the GOLD stage or FEV1 decline. Furthermore, serum levels of neutrophil elastase (NE) and MMP‐3 (but not of IL‐6 and MMP‐12) were also higher in COPD smokers than in healthy smokers before and after adjustment for age and pack‐years. Among COPD smokers, levels of MMP‐9, NGAL and proMMP‐9/NGAL were positively correlated with NE (P < 0.0001) but not with the remaining factors. Gelatin zymography detected proMMP‐9 in serum samples of healthy and COPD smoking groups. Our results suggest that associated serum levels of proMMP‐9, NGAL, proMMP‐9/NGAL and NE may reflect the state of systemic inflammation in COPD related to cigarette smoking.
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Affiliation(s)
- Sarra Bchir
- Unité de recherche UR12ES06, Physiologie de l'Exercice et Physiopathologie de l'Intégré au Moléculaire, Biologie, Médecine et Santé, Faculté de Médecine de Sousse, Université de Sousse, Sousse, Tunisia.,Institut Supérieur de Biotechnologie de Monastir, Université de Monastir, Monastir, Tunisia.,Centre de Recherche des Cordeliers, INSERM UMRS1138, Sorbonne Universités UPMC Paris 06, Université Paris Descartes Sorbonne Paris Cité, Paris, France
| | - Hela Ben Nasr
- Unité de recherche UR12ES06, Physiologie de l'Exercice et Physiopathologie de l'Intégré au Moléculaire, Biologie, Médecine et Santé, Faculté de Médecine de Sousse, Université de Sousse, Sousse, Tunisia
| | - Sandrine Bouchet
- Centre de Recherche des Cordeliers, INSERM UMRS1138, Sorbonne Universités UPMC Paris 06, Université Paris Descartes Sorbonne Paris Cité, Paris, France.,Assistance Publique des Hôpitaux de Paris, Paris, France
| | - Mohamed Benzarti
- Service de Pneumo-Allergologie, CHU Farhat Hached, Sousse, Tunisia
| | | | - Zouhair Tabka
- Unité de recherche UR12ES06, Physiologie de l'Exercice et Physiopathologie de l'Intégré au Moléculaire, Biologie, Médecine et Santé, Faculté de Médecine de Sousse, Université de Sousse, Sousse, Tunisia
| | - Santos Susin
- Centre de Recherche des Cordeliers, INSERM UMRS1138, Sorbonne Universités UPMC Paris 06, Université Paris Descartes Sorbonne Paris Cité, Paris, France
| | - Karim Chahed
- Unité de recherche UR12ES06, Physiologie de l'Exercice et Physiopathologie de l'Intégré au Moléculaire, Biologie, Médecine et Santé, Faculté de Médecine de Sousse, Université de Sousse, Sousse, Tunisia.,Faculté des Sciences de Sfax, Université de Sfax, Sfax, Tunisia
| | - Brigitte Bauvois
- Centre de Recherche des Cordeliers, INSERM UMRS1138, Sorbonne Universités UPMC Paris 06, Université Paris Descartes Sorbonne Paris Cité, Paris, France
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