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Cell Navigator™ Flow Cytometric Exosome Staining Kit

Exosomes, nanoscale (30-150 nm) membrane-bound vesicles secreted by cells, are central to intercellular communication. They transfer proteins, lipids, and nucleic acids, including RNA species, between cells, playing a pivotal role in physiological and pathological processes such as immune modulation, disease progression, and genetic information exchange. This makes exosomes key targets in therapeutic and diagnostic research. However, challenges such as dye aggregation and the absence of bright, specific probes have hindered the reliable detection and analysis of exosomes. The Cell Navigator™ Flow Cytometric Exosome Staining Kit addresses these challenges by enabling the detection of CD9-positive exosomes in purified or bead-bound samples. It utilizes a fluorescent dye-conjugated CD9 marker for targeted visualization, providing a straightforward staining protocol for rapid and accurate exosome detection in diverse sample matrices, including cell culture supernatants, biological fluids, and isolated exosome preparations. To ensure effective detection and analysis, it is essential to enrich the cell culture media for exosomes before staining. This can be achieved through efficient methods such as the ReadiPrep™ Exosome Isolation Kit (Cat No. 60204) or traditional ultracentrifugation.

Example protocol

SAMPLE EXPERIMENTAL PROTOCOL

Staining of Exosomes
  1. Isolate exosomes from cell culture medium using the ReadiPrep™ Exosome Isolation Kit (Cat# 60204) or your method of choice.

  2. Add 5 uL of Exosome CD9 Staining Reagent into 100 uL of exosome solution.

  3. Incubate the mix for 1 to 3 hours in the dark at room temperature.

  4. Perform flow cytometry with FITC filter set (488 nm laser with 530/30 nm filter).

Spectrum

References

View all 50 references: Citation Explorer
DNAzyme-RCA-based colorimetric and lateral flow dipstick assays for the point-of-care testing of exosomal m5C-miRNA-21.
Authors: Zhang, Hao and Tang, Yue and Zhou, Yingshun and Wang, Yiguo and Si, Haibin and Li, Lu and Tang, Bo
Journal: Chemical science (2024): 9345-9352
Flow-electricity coupling fields enhance microfluidic platforms for efficient exosome isolation.
Authors: Hu, Tao and Han, Wenhu and Zhou, Yuxuan and Tu, Weilong and Li, Xiao and Ni, Zhonghua
Journal: Analytical methods : advancing methods and applications (2024): 5335-5344
A lateral flow assay strip for simultaneous detection of miRNA and exosomes in liver cancer.
Authors: Wei, Ruyue and Wang, Dawei and Zhou, Ping and Pan, Yingbo and Wan, Xiuyan and Pan, Wei and Li, Na and Tang, Bo
Journal: Chemical communications (Cambridge, England) (2024): 7491-7494
Genome-wide quantification of RNA flow across subcellular compartments reveals determinants of the mammalian transcript life cycle.
Authors: Ietswaart, Robert and Smalec, Brendan M and Xu, Albert and Choquet, Karine and McShane, Erik and Jowhar, Ziad Mohamoud and Guegler, Chantal K and Baxter-Koenigs, Autum R and West, Emma R and Fu, Becky Xu Hua and Gilbert, Luke and Floor, Stephen N and Churchman, L Stirling
Journal: Molecular cell (2024): 2765-2784.e16
Extracellular vesicle isolation and counting system (EVics) based on simultaneous tandem tangential flow filtration and large field-of-view light scattering.
Authors: Bae, Ju-Hyun and Lee, Chan-Hyeong and Jung, Dokyung and Yea, Kyungmoo and Song, Byoung-Joon and Lee, Hakho and Baek, Moon-Chang
Journal: Journal of extracellular vesicles (2024): e12479
Page updated on December 17, 2024

Ordering information

Price
Unit size
Catalog Number22426
Quantity
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Spectral properties

Correction Factor (280 nm)

0.35

Extinction coefficient (cm -1 M -1)

73000

Excitation (nm)

491

Emission (nm)

516

Quantum yield

0.92

Storage, safety and handling

H-phraseH303, H313, H333
Hazard symbolXN
Intended useResearch Use Only (RUO)
R-phraseR20, R21, R22

Storage

Refrigerated (2-8 °C); Minimize light exposure
UNSPSC12352200

Platform

Flow cytometer

Excitation488 nm Laser
Emission530, 30 nm Filter
Instrument specification(s)FITC Channel
Exosomes from 100,000 HeLa cells (cultured for 16 hours in 10 mL serum-free medium) were isolated using ReadiPrep™ Exosome Isolation Kit (Cat# 60204) and detected using the Cell Navigator™ Flow Cytometric Exosome Staining Kit (Cat# 22426).
Exosomes from 100,000 HeLa cells (cultured for 16 hours in 10 mL serum-free medium) were isolated using ReadiPrep™ Exosome Isolation Kit (Cat# 60204) and detected using the Cell Navigator™ Flow Cytometric Exosome Staining Kit (Cat# 22426).
Exosomes from 100,000 HeLa cells (cultured for 16 hours in 10 mL serum-free medium) were isolated using ReadiPrep™ Exosome Isolation Kit (Cat# 60204) and detected using the Cell Navigator™ Flow Cytometric Exosome Staining Kit (Cat# 22426).