Table 1.
Method | Advantages | Disadvantages |
---|---|---|
Enzyme-Linked Immunosorbent Assay (ELISA) |
High specificity and sensitivity because of antigen-antibody reaction High efficiency |
High possibility of false-negative and false-positive results Expensive to prepare antibody Labor intensive Antibody stability |
Luciferase Reporter Assay | Highly sensitive quantification Widely used for cell-based gene expression assays Large dynamic range of bioluminescence affords |
Time consuming |
Quantitative Real-Time Polymerase Chain Reaction |
Rapid and sensitive Applicable for primary cells and frozen samples |
High possibility of false-negative or false-positive results |
Western Blotting | High sensitivity and specificity due to antigen-antibody reaction Has the ability to detect picogram level of proteins in a sample |
High false or subjective results High cost High technical demand Requirement of a specific antibody to detect the protein of interest |
Gel Electrophoresis Mobility Shift Assay (EMSA) | Simple, sensitive, and robust | Does not provide information regarding the location of nucleic acid sequences, molecular weight and identities of the protein in a protein-nucleic acid complex |
Immunohistochemistry (Immunostaining) |
High specificity due to antigen-antibody reaction High resolution Good signal amplification |
Reaction bias Interruption bias Possibility of having a high background Species cross-reactivity |
Chromatin Immunoprecipitation (ChIP) | Rapid and effective Determines interactions between DNA binding proteins, target genes and unknown DNA sequences |
Not a quantitative approach Variability in crosslinking between DNA and target protein among samples Variability in crosslinking with antibody immunoprecipitation |