FeRhoNox-1, also known as RhoNox-1, is an active fluorescent probe that specifically detects unstable iron(II) ions (Fe2+). Once reacted with Fe2+, an orange (red) fluorescent product is irreversibly generated. (Absmax= 540nm, FLmax= 575nm). FeRhoNox-1 is permeable to cell membranes and highly selective, which is suitable for the detection of Fe2+ in living cells and tends to be localized in the Golgi apparatus.
Protocol (for reference only)
1. Preparation of RhoNox-1 working solution
1.1 Preparation of the stock solution
Dissolve 50 μg RhoNox-1 in 110 μL DMSO to obtain 1 mM of stock solution.
1.2 Preparation of RhoNox-1 working solution
Dilute the stock solution in serum-free cell culture medium or PBS to obtain 1-10 μM of working solution.
Note: Please adjust the concentration of RhoNox-1 working solution according to the actual situation.
2. Cell staining (6-well plate)
2.1 Suspension cells
a. Centrifuge at 1000 g at 4℃ for 3-5 minutes and then discard the supernatant. Wash twice with PBS, 5 minutes each time.The cell density is 1×106/mL.
b. Add 1 mL of working solution, and then incubate at room temperature for 5-30 minutes.
c. Centrifuge at 400 g at 4℃ for 3-4 minutes and then discard the supernatant.
d. Wash twice with PBS, 5 minutes each time.
e. Resuspend cells with serum-free cell culture medium or PBS. Observation by fluorescence microscopy or flow cytometry.
2.2 Adherent cells
a. Culture adherent cells on sterile coverslips.
b. Remove the coverslip from the medium and aspirate excess medium.
c. Add 100 μL of working solution, gently shake it to completely cover the cells,and then incubate at room temperature for 5-30 minutes.
d. Wash twice with medium, 5 minutes each time. Observation by fluorescence microscopy.
Solubility (25°C) | DMSO |
Storage | -20°C, protect from light, dry, sealed |
Species | Mouse | Rat | Rabbit | Guinea pig | Hamster | Dog |
Weight (kg) | 0.02 | 0.15 | 1.8 | 0.4 | 0.08 | 10 |
Body Surface Area (m2) | 0.007 | 0.025 | 0.15 | 0.05 | 0.02 | 0.5 |
Km factor | 3 | 6 | 12 | 8 | 5 | 20 |
Animal A (mg/kg) = Animal B (mg/kg) multiplied by | Animal B Km |
Animal A Km |
For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.
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