Pathogenic Leptospira
Pathogenic Leptospira - Related Videos
07:27
CRISPR Interference-Based Gene Silencing: A Technique for Targeted Repression of Gene Function in Pathogenic Leptospira
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2025
This video demonstrates a CRISPR interference-based gene silencing in pathogenic Leptospira. Targeted repression of gene expression using a CRISPR/Cas system that blocks mRNA formation helps identify candidate genes for pathological and pharmacological studies.
14:49
Application of CRISPR Interference (CRISPRi) for Gene Silencing in Pathogenic Species of Leptospira
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Cited by 9 •
2021
Here, the application of CRISPR interference (CRISPRi) for specific gene silencing in Leptospira species is described. Leptospira cells are transformed by conjugation with plasmids expressing dCas9 (catalytically "dead" Cas9) and a single-guide RNA (sgRNA), responsible for base pairing to the desired genomic target. Methods to validate gene silencing are presented.
08:51
A Modular Workflow for Quantitative, Structural and Functional Analysis of Leptospira Biofilms
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2025
This protocol delivers a modular, BSL-2 workflow combining crystal-violet biomass assays, time-lapse phase-contrast kinetics, confocal 3-D/matrix mapping, SEM ultrastructure, and an in vivo hamster infection module to cultivate, quantify, characterize and investigate Leptospira biofilm functional role, enabling standardized evaluation of mutants and anti-biofilm interventions across laboratories.
06:05
Polymerase Chain Reaction and Dot-Blot Hybridization for Leptospira Detection in Water Samples
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2024
In this study, a dot-blot application was designed to detect Leptospira from the three main clades in water samples. This method allows for the identification of minimal DNA quantities specifically targeted by a digoxigenin-labeled probe, easily detected by an anti-digoxigenin antibody. This approach is a valuable and satisfactory tool for screening purposes.
10:39
Single Cell Measurements of Vacuolar Rupture Caused by Intracellular Pathogens
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Cited by 22 •
2013
We describe a method for tracking the endomembrane rupture elicited by the intracellular bacteria Shigella flexneri and Mycobacterium tuberculosis upon host cell invasion. Our assay makes use of CCF4, a host cytoplasmic FRET probe in live or fixed cells. This reporter is degraded by an enzyme activity present on the bacterial surface.
FAQs
Variation among pathogenic lineages can alter genes associated with periplasmic flagella, surface adhesion, and immune evasion. These genetic differences may influence how bacteria move through host tissues, attach to host structures, or resist immune defenses. Comparing such variations helps researchers connect lineage-specific genetic patterns with differences in virulence-associated functions and disease-related behavior.
Genetic comparisons identify sequences or gene patterns associated with pathogenic lineages but absent, altered, or differently organized in nonpathogenic relatives. Researchers can use these contrasts to investigate which genetic features support host interaction and disease potential. The comparison also provides a foundation for developing markers that classify isolates according to their pathogenic status.
Gene organization determines how virulence-associated functions are represented within the bacterial genome, while regulation influences when those functions are produced. Studying both aspects helps explain coordinated traits such as motility, adhesion, and immune evasion rather than treating each gene as an isolated factor. This genetic context can reveal targets for further investigation and antimicrobial intervention.
Researchers examine genetic markers to detect, classify, and compare pathogenic lineages. A marker can provide a recognizable sequence pattern that supports identification or distinguishes related groups during genetic analysis. These data strengthen epidemiological surveillance by helping track the distribution and relationships of pathogenic bacteria, while also supporting diagnostic research and interpretation of genetic diversity.
A comparison begins by examining genetic material from pathogenic isolates and related bacteria, then identifying differences in genes or genomic regions linked to virulence-associated functions. Researchers organize those differences into patterns that support detection, classification, or lineage comparisons. Interpreting the results alongside traits such as motility, adhesion, and immune evasion connects sequence variation with biological relevance.
Genetic analysis is useful when researchers need to distinguish pathogenic from nonpathogenic relatives, classify isolates, or investigate variation among pathogenic lineages. It also supports surveillance by revealing relationships among detected bacteria and informs diagnostic research. In addition, identifying conserved or variable virulence-associated features can guide studies of vaccine development and possible antimicrobial targets.
Genetic studies connect bacterial sequence variation with mechanisms relevant to leptospirosis, including movement through host tissues, adhesion, and immune evasion. That information supports several research goals at once: improving detection and classification, strengthening epidemiological surveillance, identifying vaccine-related targets, and investigating genetic features that may be suitable for antimicrobial intervention.