P53 Protein Quantification
P53 Protein Quantification - Related Videos
10:55
Purification of Ubiquitinated p53 Proteins from Mammalian Cells
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Cited by 1 •
2022
The protocol describes a step-by-step method to purify ubiquitinated proteins from mammalian cells using the p53 tumor suppressor protein as an example. Ubiquitinated p53 proteins were purified from cells under stringent nondenaturing and denaturing conditions.
04:56
Detection of Aggregation-Prone Behavior in Mutant P53 V157F Breast Cancer Cells Using Multipoint Thioflavin T Fluorescence
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2025
Hs578T breast cancer cells harboring the p53 V157F mutation exhibit significantly higher Thioflavin T fluorescence compared to MCF7 cells, indicating enhanced protein aggregation. Multipoint fluorescence measurements improve detection accuracy and reliability in identifying β-sheet-rich aggregates, underscoring the importance of aggregation-prone p53 mutations in cancer research and the development of therapeutic strategies.
08:57
Peptide and Protein Quantification Using Automated Immuno-MALDI (iMALDI)
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Cited by 13 •
2017
A protocol for the protein quantification in complex biological fluids using automated immuno-MALDI (iMALDI) technology is presented.
02:04
Covalently Linked Protein Regulators
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2020
Proteins can undergo many types of post-translational modifications, often in response to changes in their environment. These modifications play an important role in the function and stability of these proteins. Covalently linked molecules include functional groups, such as methyl, acetyl, and phosphate groups, and also small proteins, such as ubiquitin. There are around 200 different types of covalent regulators that have been identified. These groups modify specific amino acids in a protein.
09:04
Selected Reaction Monitoring Mass Spectrometry for Absolute Protein Quantification
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Cited by 15 •
2015
This protocol describes how to perform absolute quantification assays of target proteins within complex biological samples using selected reaction monitoring. It was used to accurately quantify proteins of the mouse macrophage chemotaxis signaling pathway. Target peptide selection, assay development, and qualitative and quantitative assays are described in detail.
FAQs
A p53-specific antibody or other detection reagent provides molecular selectivity by binding p53 within the sample. The process then converts that binding event into a measurable signal, which is compared with standards or a reference sample to estimate abundance. This link between target recognition and signal allows researchers to distinguish p53-related measurements from broader cellular protein content.
Abundance measurements help indicate how the p53 pathway responds to DNA damage or cellular stress, but their value comes from comparing defined biological conditions. Researchers can examine p53 levels after drug treatment or under different stress conditions to determine whether those factors alter the pathway-associated response and influence cancer-cell behavior.
Standards and reference samples anchor the detected signal to an interpretable scale. Without that comparison, a signal may show that p53 was detected but cannot support a concentration estimate or a meaningful comparison between specimens. Using the same comparison framework helps researchers evaluate differences across tumor and normal samples or across experimental treatments.
Measurements can be made in cells, tissues, or other biological samples, allowing the same target to be examined across experimental and disease-related material. This flexibility supports comparisons between tumor and normal specimens and helps connect molecular p53 abundance with broader questions about mutations, drug treatments, cellular stress, and therapeutic response.
By comparing samples that differ in mutation status, drug exposure, or cellular stress, researchers can ask whether these factors are associated with altered p53 abundance. The measurement therefore serves as a molecular readout alongside observations of cancer-cell behavior, helping link a genetic or experimental perturbation to changes in the p53-associated response.
Quantified p53 can support biomarker analysis and the assessment of therapeutic responses. Researchers may use abundance data to compare specimens, evaluate how a treatment affects the p53 pathway, and relate those changes to cancer-cell behavior. Its usefulness lies in providing a measurable protein-level outcome rather than relying only on treatment or stress conditions.