Indo-1, AM, cell permeant - Special Packaging

Citations & References (1099)

Invitrogen™

Indo-1, AM, cell permeant - Special Packaging

This cell-permeant indo-1, AM is a UV light—excitable, ratiometric Ca2+ indicator. The emission maximum of indo-1 shifts from ∼475 nmRead more

Catalog Number	Quantity
I1223	20 x 50 μg

Catalog number I1223

Price (CNY)

4,855.00

Add to cart

Quantity:

20 x 50 μg

Price (CNY)

4,855.00

Add to cart

This cell-permeant indo-1, AM is a UV light—excitable, ratiometric Ca²⁺ indicator. The emission maximum of indo-1 shifts from ∼475 nm in Ca²⁺-free medium to ∼400 nm when the dye is saturated with Ca²⁺. This AM ester form of the dye is available in 1 mg amounts (I-1203) and in 1 mM solution (I-1226). A cell-impermeant pentapotassium (F-1202) salt form of the dye is also available.

Learn more about ion indicators including calcium, potassium, pH, and membrane potential indicators ›

For Research Use Only. Not for use in diagnostic procedures.

Specifications

Detection MethodFluorescence

Dye TypeFluorescent Dye-Based

FormSolid

Quantity20 x 50 μg

Shipping ConditionRoom Temperature

For Use With (Application)Cell Viability, Proliferation and Cellular Imaging, Flow Cytometry

For Use With (Equipment)Fluorescence Microscope, Microphotometer, Flow Cytometer

Product TypeIndo-1 AM

Unit SizeEach

Contents & Storage

Store in freezer -5°C to -30°C and protect from light.

Frequently asked questions (FAQs)

I am doing calcium flux imaging with your Fura-2 calibration kit, but am seeing a large variability in ratio in different places around the slide. I am correcting for uniform illumination, using the product as directed, and sealing the coverslip with nail polish.

The nail polish may be the problem. The K_d value (calcium sensitivity) changes depending upon the dye's environment. Nail polish has solvents that can leech under the coverslip and cause variability. We recommend either going without a sealing or sealing with melted paraffin painted on the coverslip edges with a cotton-tipped applicator (paraffin is hydrophobic and has no solvents).

Find additional tips, troubleshooting help, and resources within our Cell Analysis Support Center.

I need to label cells with Fluo-4, AM, for a calcium flux assay. How long after labeling will the dye be retained?

After loading dye into the cells, intracellular esterases remove the 'AM' moiety from the dye. When the 'AM' group is removed, the dye is able to bind calcium and fluoresce. Since the dye is not covalently bound to any cellular components, it may be actively effluxed from the cell. The rate of efflux is dependent upon the inherent properties of the cell, culture conditions and other factors. The dye may be retained for hours, days or even weeks or lost in a matter of minutes. The use of Probenecid (Cat. No. P36400) limits loss by active efflux.

Find additional tips, troubleshooting help, and resources within our Cell Analysis Support Center.

What indicator dye can I use to measure calcium flux by flow cytometry?

Indo-1, AM is the preferred stain for flow cytometry, where it is more practical to use a single laser for excitation, usually the 351–364 nm spectral lines of the argon-ion laser, and monitor two emissions. The emission maximum of Indo-1 shifts from ~475 nm in Ca2+-free medium to ~400 nm when the dye is saturated with Ca2+. Indo-1, AM is particularly suited for multicolor fluorescence applications.

Find additional tips, troubleshooting help, and resources within our Cell Analysis Support Center.

Citations & References (1099)

Citations & References

Abstract

Modulation of myocardial function and [Ca2+] sensitivity by moderate hypothermia in guinea pig isolated hearts.

Authors:Stowe DF,Fujita S,An J,Paulsen RA,Varadarajan SG,Smart SC

Journal:The American journal of physiology

PubMed ID:10600852

FDF03, a novel inhibitory receptor of the immunoglobulin superfamily, is expressed by human dendritic and myeloid cells.

Authors:Fournier N,Chalus L,Durand I,Garcia E,Pin JJ,Churakova T,Patel S,Zlot C,Gorman D,Zurawski S,Abrams J,Bates EE,Garrone P

Journal:Journal of immunology (Baltimore, Md. : 1950)

PubMed ID:10903717

CD5 antibodies increase intracellular ionized calcium concentration in T cells.

Authors:June CH,Rabinovitch PS,Ledbetter JA

Journal:Journal of immunology (Baltimore, Md. : 1950)

PubMed ID:3106489

The binding of a variety of monoclonal antibodies to the CD5 (T, gp67) pan T cell differentiation antigen has been shown to potentiate T cell proliferation. In this paper we show that CD5 monoclonal antibodies cause increased intracellular free calcium concentration ([Ca2+]i) in T cells. An increase in [Ca2+]i occurred ... More

The role of L-type Ca2+ current and Na+ current-stimulated Na/Ca exchange in triggering SR calcium release in guinea-pig cardiac ventricular myocytes.

Authors:Evans AM, Cannell MB

Journal:Cardiovasc Res

PubMed ID:9349392

OBJECTIVE: This study examines the relative ability of sodium current (INa)-stimulated reverse mode Na/Ca exchange and the L-type calcium current (ICa) to trigger calcium-induced calcium release (CICR) in guinea-pig ventricular myocytes. METHODS: Cytosolic Ca2+ transients were recorded from enzymatically dissociated guinea-pig ventricular myocytes using Indo-1. Macroscopic membrane currents were simultaneously ... More

Nitric oxide is an upstream signal of vascular endothelial growth factor-induced extracellular signal-regulated kinase1/2 activation in postcapillary endothelium.

Authors:Parenti A, Morbidelli L, Cui XL, Douglas JG, Hood JD, Granger HJ, Ledda F, Ziche M

Journal:J Biol Chem

PubMed ID:9461619

We recently demonstrated that nitric oxide (NO) significantly contributes to the mitogenic effect of vascular endothelial growth factor (VEGF), suggesting a role for the NO pathway in the signaling cascade following kinase-derivative receptor activation in vascular endothelium. The aim of this study was to investigate the intracellular pathways linked to ... More

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