What does calcein AM stain for?

Because Calcein AM does not require DNA binding, it stains all metabolically-active cells and can be used to measure metabolic activity in non-nucleated cells, such as platelets.

Is calcein a fluorescent?

Calcein is a fluorescent dye that is quenched in a concentration-dependent manner. Therefore, on short timescales, its concentration-dependent fluorescence can be used as a probe of cell volume, and therefore a probe of water transport into or out of cells.

How do I make calcein am?

Remove one 50 µg calcein AM from the freezer and allow to warm to room temperature. 2. Add 50 µL high-quality, anhydrous DMSO to one vial calcein AM, yielding a 1 mM stock solution. Once prepared, the DMSO stock solution should be used within a short time period for one series of experiments.

How and why does calcein am lead to fluorescent cells?

Once inside cell, AM groups are hydrolyzed by intracellular esterases. The fluorescent calcein molecule is restored, which is trapped in the cell and emits strong green fluorescence. Since dead cells lack esterase activity, only live cells are labeled and detected.

How long does calcein AM last?

As an aqueous solution, calcein AM is susceptible to hydrolysis and should be used within one day.

Is calcein AM toxic?

Calcein, AM has been used for studies of enzymatic activity, cell membrane integrity, and long-term cell tracking due to its low cellular toxicity. It is important to note that for certain cell lines and experimental conditions, relatively high concentrations of Calcein, AM can be toxic to cells.

Does calcein AM stain bacteria?

We found that calcein-AM staining was an effective method for quantifying killing of D. discoidium by bacterial pathogens and purified bacteria-derived cytotoxins. Although calcein-AM is marketed as a cell-permeant dye that labels viable cells, we found that for D.

How long does calcein AM last in cells?

Is calcein AM fixable?

Simply stated, NO calcein AM is NOT FIXABLE.

How long does Calcein AM last?

Does Calcein AM stain bacteria?

Is calcein am light sensitive?

Calcein AM Dye is supplied at ambient temperature. Upon arrival store at -20°C. The product when stored as directed is stable for 1 year. light as Calcien AM dye is light sensitive.

What is ethd-1 stain?

The cell-impermeant viability indicator ethdium homodimer-1 (EthD-1) is a high-affinity nucleic acid stain that is weakly fluorescent until bound to DNA and emits red fluorescence (excitation/emission maxima ∼528/617). For Research Use Only. Not for use in diagnostic procedures. Store in freezer -5°C to -30°C and protect from light.

What does ethd-1 stand for?

The cell-impermeant viability indicator ethdium homodimer-1 (EthD-1) is a high-affinity nucleic acid stain that is weakly fluorescent until bound to DNA and emits red fluorescence (excitation/emission maxima ~528/617).

Can I use calcein or ethidium homodimer-1 after staining cells?

This is not recommended. Neither Calcein nor ethidium homodimer-1 bind to any cellular components upon fixation. There is no guarantee that the dyes will be retained upon fixation or any subsequent wash steps. We recommend scoring for live and dead cells as soon as possible after staining.

What is ethidium homodimer 1 used for?

Introduction Ethidium Homodimer-1 (EthD-1) is a high affinity fluorescent nucleic acid stain that is weakly fluorescent until bound to DNA and emits red fluorescence (excitation/emission maxima ~528/617). The EthD-1 is highly positively charged and cell-impermeant, and widely used as cell viability indicator.