Solutions of High-performance Molecular Probes-1
1. Molecular probes for lipid droplets
Lipid droplets (LDs) are composed of a chemical substance called "lipids". Lipid droplets are storage organelles in the center of lipid and energy homeostasis. They have a unique structure composed of a hydrophobic core of neutral lipids, which is surrounded by a phospholipid monolayer modified by a specific set of proteins. Due to the diversity of lipid droplet functions, their abnormalities are associated with many pathological states.
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Cat. No. |
Product |
Introduction |
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C11 BODIPY 581/591 |
Ratio fluorescence indicator for lipid oxidation |
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BODIPY 493/503 |
A green fluorescent probe widely used for lipid droplet labeling. |
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BODIPY 505/515 |
A green fluorescent probe widely used for lipid droplet labeling. |
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BODIPY 558/568 C12 |
Red neutral lipid droplet fluorescent probe |
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Nile Red |
Red neutral lipid droplet fluorescent probe |
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Oil Red O |
Commonly used tissue staining dyes can identify cholesterol esters. |
Application Cases

Figure 1. The lipid ROS levels of the target cells were detected using flow cytometry and C11 BODIPY 581/591.
Cells 11.22 (2022) 3580.

Figure 2. Detection of lipid reactive oxygen species levels using BODIPY 581/591 C11 dye
Plos one 17.11 (2022)e0276083.
2. Molecular probes for cytomembrane
DiD, DiO, Dil and DiR are a group of lipophilic fluorescent dyes, mainly used for labeling cell membranes and other lipid-soluble biological structures. When these dyes bind to the cell membrane, their fluorescence intensity significantly increases. This is because they have high quenching constants and excited state lifetimes. Using appropriate concentrations, these dyes can uniformly stain the entire cell membrane. Each dye has its unique fluorescence color: Dil produces orange fluorescence, DiO produces green fluorescence, DiD produces red fluorescence, and DiR produces dark red fluorescence. This color difference makes them very suitable for multi-color imaging and flow cytometry analysis of living cells. The fluorescence of Dil and DiO can be observed through standard FITC and TRITC filters. The fluorescence of DiD can be excited by a 633 nm He-Ne laser, with its excitation and emission wavelengths being longer than those of Dil, making it more important in cell and tissue staining. The infrared fluorescence of DiR can penetrate cells and tissues, so it is often used for tracing in live imaging.
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Cat. No. |
Product |
Ex/Em(nm) |
Introduction |
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DiO(DiOC18(3)) |
484/510 |
Lipophilic fluorescent probe |
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DiI (DiIC18(3)) |
550/567 |
Lipophilic fluorescent probe |
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DiD perchlorate |
644/663 |
Lipophilic fluorescent probe |
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Cy7 DiC18(DiR ) |
748/780 |
Near-infrared fluorescent dye |
Application Cases

Figure 3. Precisely identifying the DiR-labeled multipotent cells in the liver and spleen at different time points
World J Gastroenterol. 2012 Feb 14; 18(6): 507–516.

Figure 4. Image of cells labeled with DID and DiO
3. Molecular probes for cell nucleus
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Cat. No. |
Product |
Introduction |
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Propidium Iodide |
Fluorescent probes used for identifying dead cells. |
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DAPI (hydrochloride) |
Fluorescent DNA probe |
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Hoechst 33342 trihydrochloride |
Fluorescent DNA probe |
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Hoechst 33258 trihydrochloride |
Fluorescent DNA probe |
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Hoechst 34580 tetrahydrochloride |
Fluorescent DNA probe |
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7-Aminoactinomycin D (7-AAD) |
Fluorescent DNA probe |
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Acridine Orange hydrochloride |
Fluorescent nucleic acid dyes that can penetrate cells. |
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NucPE1 (Nuclear Peroxy Emerald 1) |
Nuclear localization fluorescent hydrogen peroxide probe. |
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HOE 32021 |
An intracellular DNA dye. |
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SYTO 9 Green Fluorescent Nucleic Acid Stain(5mM in DMSO) |
It is a green fluorescent cell nucleus and chromosome counterstain. |
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Pyronin Y (Pyronine G) |
The targeting involves cellular structures including RNA, DNA and organelles. |
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TO-PRO 1 |
DNA-binding fluorescent dyes are used as fluorescent dyes for necrotic cells. |
Application Cases

Figure 5. DAPI Detection Kit was used for TUNEL staining.
Life Sciences,Volume 271, 15 April 2021, 119199

Figure 5. The Hoechst33342 was used to stain the nuclei.
Int J Mol Sci. 2023 May; 24(10): 8719.
4. Molecular probes for mitochondrion
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Cat. No. |
Product |
Introduction |
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JC-1 |
It is widely used for detecting mitochondrial membrane potential. |
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Mito-Tracker Green |
Mito-Tracker Green is a green fluorescent mitochondrial dye. |
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MitoMark Red I |
MitoMark Red I is a red fluorescent marker for mitochondria. |
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MitoSOX Red |
A novel fluorescent probe specifically targeting mitochondria in living cells. |
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Rhodamine 123 |
Rhodamine dyes can bind to mitochondria and produce bright fluorescence. |
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Rhodamine 6G |
Rhodamine dyes can bind to mitochondria and produce bright fluorescence. |
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Tetramethylrhodamine methyl ester (perchlorate) |
Rhodamine dyes can bind to mitochondria and produce bright fluorescence. |
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Rhodamine 800 |
Rhodamine dyes can bind to mitochondria and produce bright fluorescence. |
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2-Di-1-ASP |
Extensively used as fluorescent probes for mitochondrial staining and groove binding of double-stranded DNA. |
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Acridine Orange 10-Nonyl Bromide (Nonylacridine orange) |
Fluorescent probe for phosphatidylcholine (λex: 489 nm, λem: 525 nm). |
Application Cases

Figure 6. Mitochondrial morphology was detected by MitoTracker Red.
J. Agric. Food Chem. 2021, 69, 45, 13557-13567
5. Molecular probes for other cell structure
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Cat. No. |
Product |
Introduction |
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Endoplasmic reticulum |
ER-Tracker Blue-White DPX |
A blue fluorescent dye with high selectivity for endoplasmic reticulum. |
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ER-Tracker Green |
A green fluorescent dye with high selectivity for endoplasmic reticulum. |
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ER-Tracker Red |
A red fluorescent dye with high selectivity for endoplasmic reticulum. |
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Golgi complex |
Golgi-Tracker Red |
A red fluorescent dye with high selectivity for Golgi complex. |
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C6 NBD Ceramide (d18:1/6:0) |
A green fluorescent dye with high selectivity for Golgi complex. |
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Lysosome |
Lyso-Tracker Red |
A red fluorescent dye with high selectivity for lysosome. |
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Lyso-Tracker Green |
A green fluorescent dye with high selectivity for lysosome. |
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Green DND-26 |
Green DND-26 is a green fluorescent dye for lysosomes. |
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Cellular skeleton |
FITC-Phalloidin |
FITC-Phalloidin is a green fluorescent probe with high affinity and selectivity for filamentous actin (F-actin). |
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TRITC Phalloidin |
TRITC-Phalloidin is a fluorescent probe for the orange-red form of F-actin. |
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Phalloidin-TFAX 488 |
Green fluorescent cytoskeletal staining,combined with actin. |
Application Cases

Figure 7. CLSM images show the co-localization of CRT and ER (ER-Tracker Green).
https://doi.org/10.1002/adfm.202214998
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