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Location: Home > Custom Services > Molecular Biology Services > Vector Construction, transfection&co-localization analysis

Vector Construction, transfection&co-localization analysis

Date: 2018-01-25 Author: Leading Biology Click: 998

Vector Construction


Plasmid vector construction is an essential step for molecular microbiology. Manipulation of the fungal genome to express genes to activate secondary metabolite production often requires creation of plasmid constructs in a reiterative fashion. Plasmids were recognized as a convenient means to package foreign DNA for molecular cloning strategies allowing for mass production of certain genes and encoding proteins in a desired host. Thus, gene cloning and vector construction are routine procedures in genomic studies.


Vector Construction

Fig. 1 Construction of genomic vectors for gene expression


Procedures:
1. Target gene determination and primer design.
2. PCR amplification.
3. DNA fragments mixed with TAR-cloning vector.
4. Introduce the vector into E. Coli

Transfection 


Transfection is the method that introducing naked or purified nucleic acids into eukaryotic cells, and the cells that have incorporated the foreign DNA are called transfectants. There are various methods of introducing foreign DNA into a eukaryotic cell: some rely on physical treatment (electroporation, cell squeezing, nanoparticles, magnetofection); others rely on chemical materials or biological particles (viruses) that are used as carriers.

Co-localization Analysis


Co-localization analysis is an advanced digital imaging tool to observe the spatial overlap between two (or more) different fluorescent labels, each having a separate emission wavelength to see if the different “targets” are located in the same area of the cell or very near to one another. This technique is important to many cell biological and physiological studies during the demonstration of a relationship between pairs of bio-molecules.


In confocal microscopy, specimens are recorded as a digital image composed of a multi-dimensional array containing many volume elements termed voxels that represent three-dimensional pixels. The size of a voxel (or detection volume) is determined by the numerical aperture of the objective, the illumination wavelength, and the confocal detector pinhole diameter. 


co-localization Analysis

Fig.2 Co-localization Analysis


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