Recombinant Strains
Recombinant Strains - Related Videos
00:57
Viral Recombination
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2019
Cells are sometimes infected by more than one virus at once. When two viruses disassemble to expose their genomes for replication in the same cell, similar regions of their genomes can pair together and exchange sequences in a process called recombination. Alternatively, viruses with segmented genomes can swap segments in a process called reassortment. Viral Recombination Can Create New Diseases Some diseases can infect multiple species. For example, pigs can be infected by some human and...
02:58
Measurement of Compressive Stress-Strain Response at Small-Strains
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2025
This protocol presents the configuration of a compression test device capable of precisely measuring the mechanical properties of microstructures in the small-strain region, along with a systematic method for compression testing using this device. The proposed device can be used to analyze various microstructures and the mechanical behavior of polymer-based materials.
14:23
Recombineering Homologous Recombination Constructs in Drosophila
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Cited by 9 •
2013
Homologous recombination techniques greatly advance Drosophila genetics by enabling the creation of molecularly precise mutations. The recent adoption of recombineering allows one to manipulate large pieces of DNA and transform them into Drosophila6. The methods presented here combine these techniques to rapidly generate large homologous recombination vectors.
08:56
Recombineering and Gene Targeting
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2023
One of the most widely used tools in modern biology is molecular cloning with restriction enzymes, which create compatible ends between DNA fragments that allow them to be joined together. However, this technique has certain restrictions that limit its applicability for large or complex DNA construct generation. A newer technique that addresses some of these shortcomings is recombineering, which modifies DNA using homologous recombination (HR), the exchange between different DNA molecules based...
14:53
Stress-Strain Characteristics of Aluminum
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2023
Source: Roberto Leon, Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA Aluminum is one of the most abundant materials in our lives, as it is omnipresent in everything from soda cans to airplane components. Its widespread use is relatively recent (1900AD), primarily because aluminum does not occur in its free state, but rather in combination with oxygen and other elements, often in the form of Al2O3. Aluminum was originally obtained from bauxite mineral deposits...
FAQs
A targeted genetic change creates a direct comparison between an altered microorganism and its unmodified counterpart. By measuring differences in virulence, replication, antigen production, or immune recognition, researchers can associate a specific gene with a disease-related or host-interaction trait. This helps distinguish the contribution of that gene from broader properties of the pathogen.
The choice among insertion, deletion, and modification depends on the genetic question being tested. Introducing material can examine the effect of an added gene, whereas removing or changing a selected gene can reveal what happens when its activity or sequence is altered. Comparing these engineered states links gene-level differences to measurable infection or immune outcomes.
These strains allow investigators to examine whether a genetic change alters how the host immune system recognizes a microorganism. Measurements of immune recognition can be considered alongside replication, antigen production, and virulence, helping separate a pathogen trait from the host response it provokes. This makes the approach useful for studying both pathogen factors and host-defense mechanisms.
A general workflow begins by selecting a gene relevant to the research question, introducing, deleting, or modifying that genetic element, and then examining the resulting strain. Researchers assess defined traits such as virulence, antigen production, replication, or immune recognition. Conducting these comparisons under controlled conditions helps connect the engineered change with a biological outcome.
Recombinant strains are especially useful when researchers need to test how a defined pathogen factor affects infection or evaluate a vaccine candidate in a controlled experimental system. The engineered organism provides a way to compare outcomes associated with selected genetic changes, supporting interpretation of pathogen behavior and host responses in immunology and infection studies.
Findings from these experiments can support diagnostic tool development and targeted interventions. If a genetic change is linked to antigen production, virulence, replication, or immune recognition, that relationship can identify a biologically informative feature to measure or target. In immunology and infection research, such links help connect mechanistic observations with tools for detecting or addressing infection.