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Rapid, Direct Measurement of Fatty Acid Oxidation (FAO)

  • Direct detection of FAO activity, no surrogate markers
  • Simple, plate-based protocol gives results in ~2 hours
  • Reproducible results for confident decision making
  • Amenable to high-throughput screening

Catalog Number:

Size

Catalog Number: CS3271A08

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Overview
Protocols
Specifications
Resources
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A Better Way to Measure FAO in Live Cells

Fatty acid oxidation, also known as beta-oxidation, is the metabolic process by which fatty acids are broken down in the mitochondria to generate energy. This process produces NADH and FADH2, which feed into the electron transport chain to drive ATP synthesis. FAO plays a critical role in cellular energy metabolism, especially during periods of fasting, exercise or metabolic stress, and is tightly linked to mitochondrial health and function. Understanding and measuring FAO is essential for studying metabolic diseases, obesity, diabetes and cancer.

Existing approaches to FAO measurement are either indirect, low throughput, or require specialized equipment. In contrast, the FAO-Glo™ Assay offers direct detection of FAO in a simple, plate-based format:

  • No radioactivity
  • No oxygen consumption proxies
  • No expensive instrumentation.

It combines true functional analysis with scalability and speed for modern metabolism research.

How the FAO-Glo™ Assay Works

The FAO-Glo™ assay uses a proprietary FAO substrate that enters the mitochondria of live cells and undergoes fatty acid oxidation. During this process, FAO cycling triggers the release of luciferin, which is then quantified using a sensitive Luciferin Detection Reagent. Luminescence produced is proportionate to FAO occurring in the sample.

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Reliable FAO Measurement from Low to High Cell Inputs

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Cell number and time dependence of FAO. FAO-Glo™ was used to measure FAO in HEK293 cells for 1 hour with different amounts of cells in the presence or absence of 20mM etomoxir (A) or with 20K cells for different amounts of time (B).

Measuring FAO Inhibition and Activation

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The FAO-Glo™ Assay successfully detected inhibition and activation of the pathway. HEK293 cells were treated with 20µM etomoxir, an inhibitor of FAO (left). HepG2 cells were treated with 10µM resveratrol, a known activator of FAO (right).

Protocols

No protocols available

Specifications

Catalog Number:

What's in the box?

Item Part # Size

FAO Substrate

CS3271A05 1 × 20μl

FAO Luciferin Detection Reagent

CS3271A06 1 × 10ml

FAO Reconstitution Buffer

CS3271A07 1 × 10ml

d-Cysteine, 100X

V251A 1 × 100μl

Certificate of Analysis

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Patents and Disclaimers

U.S. Pat. Nos. 9,273,343 and 9,951,372, European Pat. No. 2751089, Japanese Pat. No. 6067019 and other patents pending.

Do you want to learn more about our cellular energy metabolism tools and the innovative technology that powers these assays? Explore the metabolic activity assay portfolio.