Atp Bioluminescence
Atp Bioluminescence - Related Videos
08:32
The ATP Bioluminescence Assay
0 Views •
2023
In fireflies, the luciferase enzyme converts a compound called luciferin into oxyluciferin, and produces light or “luminescence” as a result. This reaction requires energy derived from ATP in order to proceed, so researchers have exploited the luciferase-luciferin interaction to gauge ATP levels in cells. Given ATP’s role as the cell’s currency of energy, the ATP bioluminescence assay can provide insight into cellular metabolism and overall cell health.In this video, JoVE discusses cellular...
01:31
ATP Yield
0 Views •
2019
Cellular respiration produces 30 - 32 ATP per glucose molecule. Although most of the ATP results from oxidative phosphorylation and the electron transport chain (ETC), 4 ATP are gained beforehand (2 from glycolysis and 2 from the citric acid cycle). The ETC is embedded in the inner mitochondrial membrane and is comprised of four main protein complexes and an ATP synthase. NADH and FADH2 pass electrons to these complexes, which pump protons into the intermembrane space. This distribution of...
01:08
Hydrolysis of ATP
0 Views •
2019
The bonds of adenosine triphosphate (ATP) can be broken through the addition of water, releasing one or two phosphate groups in an exergonic process called hydrolysis. This reaction liberates the energy in the bonds for use in the cell—for instance, to synthesize proteins from amino acids. If one phosphate group is removed, a molecule of ADP—adenosine diphosphate—remains, along with inorganic phosphate. ADP can be further hydrolyzed to AMP—adenosine monophosphate—by the removal of a second...
03:17
Cellular Bioluminescence Based Assay: A High Throughput Method for Combinatorial Drug Screening
0 Views •
2023
In this video, we describe a method highlighting the utility of bioluminescence assay for sensitive and rapid screening of drugs. These drugs can be tested alone or in combination to assess the synergism in their mode of action.
05:06
Bioluminescent Bacterial Imaging In Vivo
0 Views •
Cited by 9 •
2012
This article describes the administration of lux-tagged bacteria to mice and subsequent in vivo analysis using IVIS bioluminescence imaging.
FAQs
Signal intensity is generally related to ATP quantity only when assay conditions are kept defined and comparable. A stronger light signal therefore indicates more detected ATP under those conditions, but it should be interpreted as an indirect estimate of metabolically active biomass rather than a direct cell count. This distinction matters when comparing tumor-cell activity between experimental groups.
In this assay, luciferin oxidation is coupled to ATP availability through luciferase activity. The resulting photons provide a measurable output that can be compared across samples. Because the light signal reflects ATP detected under the assay conditions, the luciferase-luciferin reaction links a biochemical measurement to cellular activity without directly counting cells.
ATP bioluminescence can support viability, proliferation, and treatment-response measurements, but these readouts are related rather than identical. A change in luminescence indicates a change in cellular ATP signal, which researchers may use to assess cellular activity. In cancer studies, interpretation should therefore match the chosen endpoint and comparison design.
Comparisons are meaningful only when samples are measured under defined, comparable assay conditions. Signal intensity generally tracks ATP amount within that framework, so changing conditions can complicate interpretation even if the underlying tumor-cell populations are similar. Maintaining consistency helps distinguish treatment-associated changes in cellular activity from differences introduced by the assay itself.
A basic workflow begins with cultured tumor-cell samples, applies the luciferase-luciferin reaction, and detects the emitted light. Researchers then compare luminescence among samples or experimental groups. This workflow supports rapid assessment across many samples, making it suitable for screening different anticancer treatments or experimental conditions in parallel.
Researchers can expose cultured tumor cells to different anticancer drugs and use the resulting luminescence signals to compare cellular activity between treatment groups. Lower signal under a defined assay setup can indicate reduced ATP-associated activity relative to a comparator. The method therefore provides a rapid basis for evaluating treatment effects across multiple samples.