How do you dissolve Hoechst?
How do you dissolve Hoechst?
Prepare the Hoechst dye stock solution by dissolving the contents of one vial (100 mg) in 10 mL of deionized water (diH2O) to create a 10 mg/mL (16.23 mM) solution. Note: Hoechst dye has poor solubility in water, so sonicate as necessary to dissolve.
What do you dilute Hoechst in?
Add the dye to complete culture medium at 10 times the final recommended staining concentration. Dilute Hoechst dyes to 10 ug/mL, or dilute DAPI to 100 ug/mL. Note: DAPI or Hoechst can be combined with other fluorescent probes. Without removing the medium from the cells, add 1/10 volume of 10X dye directly to the well.
Does Hoechst 33342 stain dead cells?
Yes, Hoechst 33342 can stain dead cells, however Hoechst 33358 is the preferred dye that’s used for staining dead or fixed cells. Hoechst 33342 is generally used for staining live cells. Hoechst dyes are a fluorescent stains that bind to AT-rich regions of the minor grove in DNA.
What does Hoechst stain for?
Hoechst 33342 is used for specifically staining the nuclei of living or fixed cells and tissues. This stain is commonly used in combination with 5-bromo-2′-deoxyuridine (BrdU) labeling to distinguish the compact chromatin of apoptotic nuclei, to identify replicating cells and to sort cells based on their DNA content.
What is the difference between Hoechst and DAPI?
Hoechst dyes are often used as substitutes for another nucleic acid stain called DAPI. Key differences between Hoechst dyes and DAPI are: Hoechst dyes are less toxic than DAPI, which ensures a higher viability of stained cells. The additional ethyl group of the Hoechst dyes renders them more cell-permeable.
Is Hoechst toxic to cells?
Dyes that bind to DNA, such as Hoechst 33342, are commonly used to visualize chromatin in live cells by fluorescence microscopy. A caveat is that the probes themselves should not perturb cellular responses and under normal conditions the dyes are generally non-toxic.
Is Hoechst DAPI?
What is DAPI?
A simple-to-use fluorescent stain, 4′,6-diamidino-2-phenylindole (DAPI), visualizes nuclear DNA in both living and fixed cells. DAPI staining was used to determine the number of nuclei and to assess gross cell morphology.
What does DAPI stand for?
DAPI
| Acronym | Definition |
|---|---|
| DAPI | Dimensional Assessment of Personality Impairment (psychiatric screening) |
| DAPI | Destination Access Point Identifier |
| DAPI | Definity Application Programming Interface |
| DAPI | Days After Panicle Initiation |
Can Hoechst be fixed?
Hoechst vs DAPI–What’s the Difference? Hoechst and DAPI are popular blue fluorescent, nuclear-specific dyes that can be used to stain live or fixed cells. The dyes have minimal fluorescence in solution, but become brightly fluorescent upon binding to DNA. Therefore, they can be used to stain cells without a wash step.
Can Hoechst stain bacteria?
Staining bacteria or yeast Hoechst dyes stain bacteria more dimly than mammalian cells. Live or killed bacteria can be stained with 12-15 µg/ml Hoechst dye in PBS or 150 mM NaCl for 30 minutes at room temperature. The dyes tend to stain dead cells more brightly than live cells.
Why is DAPI used?
A simple-to-use fluorescent stain, 4′,6-diamidino-2-phenylindole (DAPI), visualizes nuclear DNA in both living and fixed cells. DAPI staining was used to determine the number of nuclei and to assess gross cell morphology. DAPI staining allows multiple use of cells eliminating the need for duplicate samples.
When to use Hoechst 33342 nucleic acid stain?
Hoechst 33342 nucleic acid stain is a popular cell-permeant nuclear counterstain that emits blue fluorescence when bound to dsDNA. This dye is often used to distinguish condensed pycnotic nuclei in apoptotic cells and for cell cycle studies in combination with BrdU. It is also available in solution (H-3570).
When to use Hoechst 33342 live cell ready probes?
This dye is often used to distinguish condensed pycnotic nuclei in apoptotic cells and for cell cycle studies in combination with BrdU. It is also available in solution (H-3570). Also available as a room-temperature-stable, ready-to-use solution: NucBlue Live Cell Ready Probes Reagent.
Can you use Hoechst 33342 instead of DAPI?
Some cell lines will label with DAPI, others not at all, and others label inconsistenly. Instead, we recommend using either Hoechst 33342 or Hoechst 33258, which have the same wavelength and binding mode as DAPI (at the A-T minor groove) but are readily cell-permeant.
How big is Hoechst 33342 in 5 ml?
Hoechst 33342, 5 ml 2245.1 Molecular Weight: 615.99 NMolar Extinction Coefficient: 47,000 M-1 cm-1 at N N N343 nm in methanol N H H NExcitation Wavelength: 361 nm OEmission Wavelength: 486 nm Supplied: 12.3 mg/ml in aqueous solution (20mM) CAS Number: 23491-52-3