Targeting FRET-based reporters for cAMP and PKA activity using AKAP79
Fluorescence resonance energy transfer (FRET)-based sensors for 3′–5′cyclic adenosine monophosphate (cAMP) and protein kinase A (PKA) allow real-time imaging of cAMP levels and kinase activity in intact cells with high spatiotemporal resolution. The development of FRET-based sensors has made it poss...
| Main Authors: | , , , |
|---|---|
| Format: | Journal article |
| Published: |
MDPI
2018
|
| _version_ | 1797099319043555328 |
|---|---|
| author | Zaccolo, M Musheshe, N Lobo, M Schmidt, M |
| author_facet | Zaccolo, M Musheshe, N Lobo, M Schmidt, M |
| author_sort | Zaccolo, M |
| collection | OXFORD |
| description | Fluorescence resonance energy transfer (FRET)-based sensors for 3′–5′cyclic adenosine monophosphate (cAMP) and protein kinase A (PKA) allow real-time imaging of cAMP levels and kinase activity in intact cells with high spatiotemporal resolution. The development of FRET-based sensors has made it possible to directly demonstrate that cAMP and PKA signals are compartmentalized. These sensors are currently widely used to dissect the organization and physiological function of local cAMP/PKA signaling events in a variety of cell systems. Fusion to targeting domains has been used to direct the sensors to a specific subcellular nanodomain and to monitor cAMP and PKA activity at specific subcellular sites. Here, we investigate the effects of using the A-kinase anchoring protein 79 (AKAP79) as a targeting domain for cAMP and PKA FRET-based reporters. As AKAP79 interacts with PKA itself, when used as a targeting domain, it can potentially impact on the amplitude and kinetics of the signals recorded locally. By using as the targeting domain wild type AKAP79 or a mutant that cannot interact with PKA, we establish that AKAP79 does not affect the amplitude and kinetics of cAMP changes or the level of PKA activity detected by the sensor. |
| first_indexed | 2024-03-07T05:22:06Z |
| format | Journal article |
| id | oxford-uuid:df4739d9-37e7-4f2e-81e7-645f2737109e |
| institution | University of Oxford |
| last_indexed | 2024-03-07T05:22:06Z |
| publishDate | 2018 |
| publisher | MDPI |
| record_format | dspace |
| spelling | oxford-uuid:df4739d9-37e7-4f2e-81e7-645f2737109e2022-03-27T09:38:17ZTargeting FRET-based reporters for cAMP and PKA activity using AKAP79Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:df4739d9-37e7-4f2e-81e7-645f2737109eSymplectic Elements at OxfordMDPI2018Zaccolo, MMusheshe, NLobo, MSchmidt, MFluorescence resonance energy transfer (FRET)-based sensors for 3′–5′cyclic adenosine monophosphate (cAMP) and protein kinase A (PKA) allow real-time imaging of cAMP levels and kinase activity in intact cells with high spatiotemporal resolution. The development of FRET-based sensors has made it possible to directly demonstrate that cAMP and PKA signals are compartmentalized. These sensors are currently widely used to dissect the organization and physiological function of local cAMP/PKA signaling events in a variety of cell systems. Fusion to targeting domains has been used to direct the sensors to a specific subcellular nanodomain and to monitor cAMP and PKA activity at specific subcellular sites. Here, we investigate the effects of using the A-kinase anchoring protein 79 (AKAP79) as a targeting domain for cAMP and PKA FRET-based reporters. As AKAP79 interacts with PKA itself, when used as a targeting domain, it can potentially impact on the amplitude and kinetics of the signals recorded locally. By using as the targeting domain wild type AKAP79 or a mutant that cannot interact with PKA, we establish that AKAP79 does not affect the amplitude and kinetics of cAMP changes or the level of PKA activity detected by the sensor. |
| spellingShingle | Zaccolo, M Musheshe, N Lobo, M Schmidt, M Targeting FRET-based reporters for cAMP and PKA activity using AKAP79 |
| title | Targeting FRET-based reporters for cAMP and PKA activity using AKAP79 |
| title_full | Targeting FRET-based reporters for cAMP and PKA activity using AKAP79 |
| title_fullStr | Targeting FRET-based reporters for cAMP and PKA activity using AKAP79 |
| title_full_unstemmed | Targeting FRET-based reporters for cAMP and PKA activity using AKAP79 |
| title_short | Targeting FRET-based reporters for cAMP and PKA activity using AKAP79 |
| title_sort | targeting fret based reporters for camp and pka activity using akap79 |
| work_keys_str_mv | AT zaccolom targetingfretbasedreportersforcampandpkaactivityusingakap79 AT musheshen targetingfretbasedreportersforcampandpkaactivityusingakap79 AT lobom targetingfretbasedreportersforcampandpkaactivityusingakap79 AT schmidtm targetingfretbasedreportersforcampandpkaactivityusingakap79 |