Metabolic Cell Analyzer

What is the Metabolic Cell Analyzer?

A metabolic cell analyzer measures oxygen consumption and extracellular acidification in intact cells within a multi-well plate, reporting mitochondrial respiration and glycolysis under basal and stressed conditions. It is used for immunometabolism, cancer metabolism and drug mechanism studies.

Overview

The instrument places a sensor cartridge above a cell monolayer or suspension in a 96-well or 24-well plate. Optical sensors embedded in the cartridge measure oxygen and pH in a small volume close to the cells, and the plate is moved up to form a transient microchamber so that changes caused by the cells can be detected. Reporter equations convert the measured rates into oxygen consumption rate, reflecting mitochondrial respiration, and extracellular acidification rate, reflecting glycolytic flux. Sequential injections of oligomycin, an uncoupler and respiratory inhibitors allow calculation of non-mitochondrial respiration, proton leak, ATP-linked respiration, maximal respiration and spare capacity. Typical assays take 60–120 minutes, and each well needs 20,000–100,000 cells or an equivalent amount of tissue.

How does it work?

Flow-based cell analyzers suspend cells in a sheath fluid that hydrodynamically focuses them into a single file. Each cell passes one or more laser beams, and detectors record forward scatter, which relates to size, side scatter, which relates to granularity, and fluorescence from labelled antibodies or reporter proteins. Thousands of cells are measured per second, so rare populations can be quantified with statistical confidence. Spectral analyzers capture the full emission spectrum for each event and unmix overlapping dyes computationally, allowing larger panels. Imaging cytometers capture a brightfield and fluorescence image of each cell in flow, adding morphology and localisation information. Metabolic analyzers measure oxygen consumption and extracellular acidification in a plate by repeatedly sampling the medium above the cells, giving a readout of oxidative phosphorylation and glycolysis. Dedicated cell cycle analyzers measure DNA content and apoptosis markers with fixed panels.

What are the key features?

• Optical oxygen and pH sensors in a transient microchamber
• Simultaneous measurement of respiration and glycolysis
• Sequential compound injection for stress test profiles
• 96-well and 24-well plate formats
• Cell requirement of 20,000–100,000 cells per well
• Analysis software with automated rate calculation and normalisation

What are the technical specifications?

A typical metabolic cell analyzer configuration offers plate formats of 96-well and 24-well, assay time of approx. 60–120 min, cells per well of 20,000–100,000 (cell type dependent), measured parameters of Oxygen consumption rate and extracellular acidification rate, sensor type of Fluorescent optical oxygen and pH sensors and injection ports of 4 per well. Values are indicative of the product class; the exact figures for each configuration are confirmed on the quotation and the calibration documents supplied with the instrument.

Which applications is it used for?

The Metabolic Cell Analyzer is used in immunometabolism and T cell activation studies, cancer cell metabolic reprogramming, drug mechanism and toxicity screening and mitochondrial function assessment. Across the wider Cell Analyzers class, laboratories also deploy it for immunophenotyping of cell populations, cell cycle and apoptosis analysis and cell therapy product characterisation.

Which standards and certifications apply?

Relevant standards and methods include IEC 60825-1, IEC 61010-1, ISO 15189, CLSI H42, USP <1046> and ISO 17025. Certification candidates for this model are CE, ISO 9001 manufacturing and IEC 61010-1 safety; each is to be confirmed for the specific configuration before shipment, and certificates are supplied only where they have been issued.

Standardise sample preparation, since cell number, staining volume, incubation time and wash steps all shift signal intensity. Include single-stain compensation controls and an unstained control in every experiment, and run reference beads for instrument setup and daily quality control. Keep sheath fluid and waste containers at the correct levels, and follow the manufacturer's cleaning procedure to limit carry-over below 1%. Lasers fall under IEC 60825-1, so protective covers and interlocks must remain functional and staff should be trained. Fixed cells for DNA content analysis need correct fixation and RNase treatment. For regulated work, document compensation, gating strategy, acquisition settings and software version, and retain raw FCS files so that analyses can be reproduced.

How do I select the right Metabolic Cell Analyzer?

Select a metabolic analyser when energy metabolism is part of the biological question, such as immune activation, drug toxicity or mitochondrial disease models. Specify plate format, compound injection ports, temperature control, cell number requirements and normalisation options.

How does it compare with other Cell Analyzers variants?

Define the panel before specifying hardware. Count how many fluorophores must be measured simultaneously, then check that the laser and detector configuration can resolve them, including compensation or spectral unmixing capability. Conventional benchtop systems suit routine 4–10 colour panels for immunophenotyping and cell cycle work. Spectral systems are appropriate when panels exceed about 12 colours or when autofluorescence varies between samples. Imaging cytometry answers questions involving cell shape, internalisation or cell-cell contact that scatter and fluorescence alone cannot resolve. Metabolic analysis addresses a different question entirely: how cells produce energy, and how they respond to inhibitors or genetic changes. All platforms need consistent sample preparation, validated compensation or unmixing controls, and documented acquisition settings so that results remain comparable between runs.