Description
Abbreviation: NS(P)
Reference: A ยปVersions
- SUIT-category: NS(P)
- SUIT protocol pattern: orthogonal 1S;2D;3P;4Rot;5Ama
SUIT 9 is a short protocol for simultaneous determination of O2 flux and the rate of H2O2 production (H2O2 flux) on isolated mitochondria,tissue homogenate (except of liver) and permeabilized cells. Succinate (S) supports the reverse electron transfer (RET) initiated H2O2 production in the LEAK state. Addition of ADP decreases H2O2 flux due to depolarization of the mitochondrial membrane. Pyruvate (P) supports NADH-pathway (N), and usually in the presence of ADP it does not increase further the H2O2 flux. Antimycin A (Ama) inhibits Complex III (CIII) and results in the elevation of the H2O2 flux. The sensitivity of the Amplex UltraRedยฎ assay (for determining H2O2 production) is changing over the experimental time and upon addition of chemicals. To correct H2O2 flux for the sensitivity changes several H2O2 calibration steps are done during the experiment. The measurement is carried out in MiR05-Kit at 37 ยฐC. For O2-Application, choose SUIT-009 O2 mt D015; for O2 and H2O2 measurements (AmR), choose SUIT-009 AmR mt D021.
Communicated by Iglesias-Gonzalez J, Komlodi T and Gnaiger E (last update 2019-01-23)
Specific DLP protocols
- SUIT-009 AmR mt D021 simultaneous determination of O2 and H2O2 flux on isolated mitochondria and tissue homogenate.
- SUIT-009 O2 mt D015 determination of O2 flux on isolated mitochondria and tissue homogenate as a control for SUIT-009 AmR mt D021.
- SUIT-009 AmR pce D019 simultaneous determination of O2 and H2O2 flux on permeabilized cells.
- SUIT-009 O2 pce D016 determination of O2 flux on permeabilized cells as a control for SUIT-009 AmR pce D019.
References
Year | Reference | Organism | Tissue;cell | |
---|---|---|---|---|
MiPNet24.10 H2O2 flux analysis | 2021-10-22 | Hydrogen peroxide flux analysis using Amplex UltraRed assay in MiR05-Kit with DatLab 7.4 | ||
Komlodi 2021 BEC AmR-O2 | 2021 | Komlรณdi T, Sobotka O, Gnaiger E (2021) Facts and artefacts on the oxygen dependence of hydrogen peroxide production using Amplex UltraRed. Bioenerg Commun 2021.4. https://doi.org/10.26124/bec:2021-0004 | Saccharomyces cerevisiae | Other cell lines |
MiPNet20.14 AmplexRed H2O2-production | 2019-06-24 | O2k-FluoRespirometry: HRR and simultaneous determination of H2O2 production with Amplex UltraRed. | Mouse | Heart |
Komlodi 2018 Methods Mol Biol | 2018 | Komlodi T, Sobotka O, Krumschnabel G, Bezuidenhout N, Hiller E, Doerrier C, Gnaiger E (2018) Comparison of mitochondrial incubation media for measurement of respiration and hydrogen peroxide production. Methods Mol Biol 1782:137-55. | Human Mouse | Skeletal muscle HEK |
Makrecka-Kuka 2015 Biomolecules | 2015 | Makrecka-Kuka M, Krumschnabel G, Gnaiger E (2015) High-resolution respirometry for simultaneous measurement of oxygen and hydrogen peroxide fluxes in permeabilized cells, tissue homogenate and isolated mitochondria. https://doi.org/10.3390/biom5031319 | Human Mouse | Heart Nervous system HEK |
Krumschnabel 2015 Methods Mol Biol | 2015 | Krumschnabel G, Fontana-Ayoub M, Sumbalova Z, Heidler J, Gauper K, Fasching M, Gnaiger E (2015) Simultaneous high-resolution measurement of mitochondrial respiration and hydrogen peroxide production. Methods Mol Biol 1264:245-61. | Mouse | Nervous system |
Steps and respiratory states
Step | State | Pathway | Q-junction | Comment - Events (E) and Marks (M) |
---|---|---|---|---|
1S | SL(n) | S | CII | 1S
|
2D | SP | S | CII | 1S;2D
|
3P | NSP | NS | CI&II | 1S;2D;3P
|
4Rot | SP | S | CII | 1S;2D;3P;4Rot
|
5Ama | ROX | 1S;2D;3P;4Rot;5Ama
|
Step | Respiratory state | Pathway control | ET-Complex | Comment |
---|---|---|---|---|
## AsTm | AsTmE | CIV | CIV | |
## Azd | CHB |
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- Coupling control
- Pathway control
- ยป Electron transfer pathway
- ยป Fatty acid oxidation pathway control state, F
- ยป NADH electron transfer-pathway state, N
- ยป Succinate pathway control state, S
- ยป NS-pathway control state, NS
- ยป Glycerophosphate pathway control state, Gp
- ยป Complex IV single step, CIV
- ยป Anaplerotic pathway control state
- Pathway control
- Main fuel substrates
- ยป Glutamate, G
- ยป Glycerophosphate, Gp
- ยป Malate, M
- ยป Octanoylcarnitine, Oct
- ยป Pyruvate, P
- ยป Succinate, S
- Main fuel substrates
- Glossary
Strengths and limitations
- It a protocol to test:
- any Complex I defect, which would lead to decreased reverse electron transfer supported ROS production.
- any Complex II defect, which would result is decreased S-linked respiration and ROS production.
- A succinate concentration > 10 mM might be required to reach saturating S-OXPHOS capacity.
- This protocol can be run under low oxygen concentration to test the oxygen dependency of mt-ROS production. For more technical details see: SUIT-018 AmR mt D031, SUIT-018 AmR mt D041.
- In some cell lines e.g. HEK293T, P does not have any effect because of the downregulation of the N-linked pathway.
- + Contribution of N pathway to the NS can be checked after the addition of Rot.
- + Reasonable duration of the experiment.
- + This protocol can be extended with the Complex IV module in the following protocols: SUIT-009 O2 mt D015 and SUIT-009 O2 pce D016.
- + Cytochrome c test can be performed in the following protocols:SUIT-009 O2 mt D015 and SUIT-009 O2 pce D016, but not simultaneously with the fluorescence.
- - Careful washing is required after the experiment to avoid carry-over of inhibitors.
Compare SUIT protocols
MitoPedia concepts: MiP concept, SUIT protocol, Recommended
MitoPedia methods:
Fluorometry