Voltage Indicator Products
Decreases and increases in membrane potential play a central role in many physiological processes such as nerve-impulse propagation, muscle contraction, and cell signaling. Voltage Indicators are important tools for studying these processes and are generally characterized as slow- or fast-response probes. Creative Biolabs offers a range of highly cited and novel indicators enabling you to track membrane potential in different cell types.

Voltage Indicators at a Glance
The fast-response indicators change their electronic structure and consequently their fluorescence properties, in response to changes in the surrounding electric field. The response is fast enough to detect transient potential changes in excitable cells. However, the magnitude of their potential-dependent fluorescence change is often small. Fast-response Voltage Indicators are commonly used to image electrical activity from intact heart tissues or measure membrane potential changes in response to pharmacological stimuli.
The slow-response indicators function by entering depolarized cells and binding to proteins or membranes and exhibit enhanced fluorescence and a red spectral shift. Slow-responding Voltage Indicators are often used to explore mitochondrial function and cell viability.
Mitochondrial Voltage Indicators to Detect Apoptosis
A distinctive feature of the early stages of apoptosis is the disruption of the mitochondria, including changes in membrane and redox potential. Creative Biolabs offers a range of indicator products specifically designed to assay mitochondrial membrane potential flow cytometry (FC) or imaging

Hot Products
The membrane-permeant JC-1 dye is widely used for determining mitochondrial membrane potential in fluorescent microscopy and FC. JC-1 dye can be used as an indicator of mitochondrial membrane potential in a variety of cell types, including myocytes and neurons, as well as in intact tissues and isolated mitochondria. This dye is more specific for mitochondrial versus plasma membrane potential and it reversibly changes color as membrane potentials increase (over values of about 80-100 mV). JC-1 is both qualitative, in regards to the shift from green to orange fluorescence emission, and quantitative, as measured by fluorescence intensity, in both filter sets. JC-1 can be used to indicate the initiation of apoptosis.
Versatility of JC-1 dye
1. Applicable to a variety of cell types
2. Highly selective for mitochondria
3. Referenced protocols for FC and imaging
Although JC-1 is widely used, there are alternative reagents to fit different filters in flow cytometry, options for studying detection of dynamic changes using single-emission, non-ratiometric reagents, and also options for using end point assays to assess mitochondrial membrane potential.
How to Find the Optimal Membrane Potential Indicators for your Experiments?
JC-1 | DiOC6(3) | Di-4-ANEPPS | Di-8-ANEPPS | RH 795 | |
Response type | Slow-response | Slow-response | Fast-response | Fast-response | Fast-response |
Readout | Fluorescence emission ratio 585/520 nm increases upon membrane hyperpolarization | Fluorescence response to depolarization depends on the staining concentration and detection method | Fluorescence excitation ratio 440/505 nm decreases upon membrane hyperpolarization | Fluorescence excitation ratio 440/505 nm decreases upon membrane hyperpolarization | Fluorescence decreases upon membrane depolarization |
Range | 1% per 1 mV | 1% per 1 mV | 2-10% per 100 mV | 2-10% per 100 mV | 2-10% per 100 mV |
Response time | 20 ms | 20 ms | Sub-millisecond | Sub-millisecond | Sub-millisecond |
Ex/Em (nm) | 514/529; 585/590 | 485/500 | 482/686 | 467/631 | 486/689 |
For any interested products, please feel free to contact us for more information.
Other Related Products
- iNeuMab™ Anti-GARP Antibody (NRP-0422-P1639) (Cat#: NRP-0422-P1639)
- iNeuMab™ Anti-EPHB2 Antibody (NRP-0422-P1220) (Cat#: NRP-0422-P1220)
- iNeuMab™ Anti-TNFα BBB Shuttle Antibody (NRZP-1022-ZP4105) (Cat#: NRZP-1022-ZP4105)
- iNeuMab™ Anti-CD20 Antibody (NRP-0422-P1230) (Cat#: NRP-0422-P1230)
- iNeuMab™ Anti-pTau Antibody (NRP-0422-P1719) (Cat#: NRP-0422-P1719)
- iNeuMab™ Anti-Tau Antibody (NRP-0422-P2293) (Cat#: NRP-0422-P2293)
- iNeuMab™ Rabbit Anti-Alpha-synuclein (CBP1631) (Cat#: NAB-08-PZ079)
- iNeuMab™ Anti-F-Spondin/SPON1 Antibody, Clone 3F4 (Cat#: NRZP-0822-ZP4740)
- iNeuMab™ Mouse Anti-EFNB2 Monoclonal Antibody (CBP1159) (Cat#: NAB-0720-Z4396)
- iNeuMab™ Mouse Anti-SHANK3 Monoclonal Antibody (CBP929) (Cat#: NAB-0720-Z3477)
- Mouse Glioma Cell Line GL261-GFP (Cat#: NCL-2108P04)
- Mouse Microglia from C57BL/6 (Cat#: NCL-21P6-082)
- Human Microglia Cell Line HMC3, Immortalized (Cat#: NCL-2108P38)
- Mouse Microglia N9 (Cat#: NCL2110P073)
- iNeu™ Human Sensory Neurons (Cat#: NCL-2103-P62)
- Green Fluorescent Alpha-synuclein Cell Line (Cat#: NCL2110P209)
- Mouse Glioma Cell Line GL-261-Luc (Cat#: NCL-2108P06)
- Human Glial (Oligodendrocytic) Hybrid Cell Line (MO3.13) (Cat#: NCL-2108P34)
- Human Retinal Epithelial Cell ARPE-19 (Cat#: NCL2110P069)
- Mouse Midbrain Dopaminergic Neuron Cell MN9D (Cat#: NCL2110P059)
- Human GFAP ELISA Kit [Colorimetric] (Cat#: NPP2011ZP383)
- Beta Amyloid (1-40), Aggregation Kit (Cat#: NRZP-0323-ZP199)
- Beta Amyloid (1-42), Aggregation Kit (Cat#: NRZP-0323-ZP200)
- Amyloid beta 1-42 Kit (Cat#: NRP-0322-P2170)
- Human Tau Aggregation Kit (Cat#: NRP-0322-P2173)
- Human Poly ADP ribose polymerase,PARP Assay Kit (Cat#: NRZP-1122-ZP62)
- Alpha Synuclein Aggregation Kit (Cat#: NRZP-1122-ZP15)
- Alpha-Synuclein Aggregation Assay Kit (Cat#: NRZP-1122-ZP37)
- AAV2/9-hEF1a-fDIO-eNpHR 3.0-mCherry-WPRE-pA (Cat#: NTA-2012-ZP78)
- AAV2 Full Capsids, Reference Standards (Cat#: NTC2101070CR)
- VSV-eGFP (Cat#: NTA-2011-ZP20)
- Dextran, NHS Activated (Cat#: NRZP-0722-ZP124)
- Human presenilin 1 (PSEN1), transcript variant 2 (NM_007318) ORF clone, TurboGFP Tagged (Cat#: NEP-0421-R0140)
- Lenti of Mouse synuclein, alpha (Snca) transcript variant (NM_001042451) ORF clone, mGFP Tagged (Cat#: NEP-0521-R0864)
- Mouse Parkinson disease (autosomal recessive, early onset) 7 (Park7) (NM_020569) clone, Untagged (Cat#: NEP-0621-R0133)
- Tau Antisense Oligonucleotide (IONIS-MAPTRx) (Cat#: NV-2106-P29)
- Human huntingtin (HTT) (NM_002111) ORF clone, Myc-DDK Tagged (Cat#: NEP-0521-R0497)
- Mouse SOD1 shRNA Silencing Adenovirus (Cat#: NV-2106-P14)
- App Rat amyloid beta (A4) precursor protein (App)(NM_019288) ORF clone, Untagged (Cat#: NEP-0421-R0053)
- Lenti of Human TAR DNA binding protein (TARDBP) (NM_007375) ORF clone, mGFP Tagged (Cat#: NEP-0521-R0832)
- Human huntingtin-associated protein 1 (HAP1) transcript variant 2 (NM_177977) ORF clone, Myc-DDK Tagged (Cat#: NEP-0521-R0676)
- Human superoxide dismutase 1, soluble (SOD1) (NM_000454) ORF clone, TurboGFP Tagged (Cat#: NEP-0521-R0748)
- NeuroBiologics™ Pig Cerebrospinal Fluid (Cat#: NRZP-0822-ZP498)
- NeuroBiologics™ Mouse Cerebrospinal Fluid (Cat#: NRZP-0822-ZP497)
- NeuroBiologics™ Rat Cerebrospinal Fluid (Cat#: NRZP-0822-ZP496)
- NeuroBiologics™ Monkey Cerebrospinal Fluid (Cat#: NRZP-0822-ZP495)
- NeuroBiologics™ Human Cerebrospinal Fluid (Cat#: NRZP-0822-ZP491)
- NeuroPro™ Anti-IDUA BBB Shuttle Protein (Cat#: NRZP-0423-ZP502)
- NeuroPro™ Anti-SGSH BBB Shuttle Protein (Cat#: NRZP-0423-ZP505)
- NeuroPro™ Anti-ASA BBB Shuttle Protein (Cat#: NRZP-0423-ZP504)
- NeuroPro™ Anti-EPO BBB Shuttle Protein (Cat#: NRZP-0423-ZP508)
- NeuroPro™ Anti-TNFR BBB Shuttle Protein (Cat#: NRZP-0423-ZP501)
- NeuroPro™ Anti-idursulfase BBB Shuttle Protein (Cat#: NRZP-0423-ZP497)
- NeuroPro™ Anti-GDNF BBB Shuttle Protein (Cat#: NRZP-0423-ZP509)
- NeuroPro™ Anti-IDS BBB Shuttle Protein (Cat#: NRZP-0423-ZP503)
- NeuroPro™ Anti-NAGLU BBB Shuttle Protein (Cat#: NRZP-0423-ZP506)
- NeuroPro™ Anti-Erythropoietin BBB Shuttle Protein (Cat#: NRZP-0423-ZP499)