Visual and Rapid Detection of <i>Klebsiella pneumoniae</i> by Magnetic Immunocapture-Loop-Mediated Isothermal Amplification Assay
| Author | Liding Zhang | en |
| Author | Yaoqiang Shi | en |
| Author | Congjie Chen | en |
| Author | Qinqin Han | en |
| Author | Mi Zhang | en |
| Author | Huashan Yi | en |
| Author | Yuzhu Song | en |
| Author | Xueshan Xia | en |
| Author | Jinyang Zhang | en |
| Orcid | Jinyang Zhang [0000-0001-7533-998X] | en |
| Issued Date | 2019-04-30 | en |
| Abstract | Background: Klebsiella pneumoniae is an important human pathogen that causes severe diseases including urinary tract infection, pneumonia, and bacteremia. However, a rapid and sensitive detection method remains to be developed. Objectives: This study aimed to develop a rapid, real-time, and visual detection method for K. pneumoniae. This is a primary screening method to improve the diagnosis of K. pneumoniae infection and save much precious time for clinical practice. Methods: Klebsiella pneumoniae was used as an antigen to produce a monoclonal antibodies (mAb). The mAb 1E6 recognizing outer membrane protein C on the surface of K. pneumoniae was screened by an indirect enzyme-linked immunosorbent assay (ELISA), Western Blot, and mass spectrometry assay, and then conjugated with the protein A/G coated magnetic beads to generate the immune magnetic beads (IMBs). Thereafter, the IMBs were used to capture K. pneumoniae, and the complex (beads-mAb-K. pneumoniae) was used for loop-mediated isothermal amplification (LAMP) assay. Results: We developed a rapid, real-time, and visual detection method employing an immunocapture loop-mediated isothermal amplification (IC-LAMP). The sensitivity of the IC-LAMP was 4 CFU mL-1. The process of K. pneumoniae detection lasted ~ 60 minutes and had no cross-reaction to other microbial strains. Besides, the accuracy of IC-LAMP was further verified by examining 39 clinical isolates. Conclusions: Without the need for enrichment of bacteria and extraction of its genome, the IC-LAMP developed here could be used as a primary screening method supplementary to traditional detection methods to improve the diagnosis of K. pneumoniae infection for clinical practice. | en |
| DOI | https://doi.org/10.5812/jjm.90016 | en |
| Keyword | <i>Klebsiella pneumonia</i> | en |
| Keyword | Loop-Mediated Isothermal Amplification | en |
| Keyword | Magnetic Immunocapture | en |
| Keyword | Monoclonal Antibodies | en |
| Publisher | Brieflands | en |
| Title | Visual and Rapid Detection of <i>Klebsiella pneumoniae</i> by Magnetic Immunocapture-Loop-Mediated Isothermal Amplification Assay | en |
| Type | Research Article | en |