The requested information is available in the following reference: Geeurickx E, et al. The generation and use of recombinant extracellular vesicles as biological reference material. Nat Commun. 2019;10(1):3288.
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| Rozmiar/SKU | Dostępność | Cena netto |
|---|---|---|
1 vial | Skontaktuj się z Obsługą Klienta, aby uzyskać informacje na temat dostępności | 871,00 zł |
Informacje o tej pozycji
871,00 zł
recombinant
expressed in human cells
Quality Segment
assay
≥70% (fluorimetric)
form
solid
shipped in
dry ice
storage temp.
−70°C
General description
Biochem/physiol Actions
W organizmach wielokomórkowych pęcherzyki zewnątrzkomórkowe znajdują się w płynach biologicznych i tkankach ciała i biorą udział w różnych procesach fizjologicznych. Są one również uwalniane do pożywki wzrostowej przez hodowane komórki.
Evs niosą markery swoich komórek pochodzenia. Dlatego też rośnie zainteresowanie klinicznymi zastosowaniami EV jako biomarkerów i terapii.
Other Notes
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Ta pozycja | |||
|---|---|---|---|
| description recombinant, expressed in human cells | description - | description - | description - |
| form solid | form - | form - | form - |
| recombinant expressed in human cells | recombinant - | recombinant - | recombinant - |
| assay ≥70% (fluorimetric) | assay - | assay - | assay - |
| shipped in dry ice | shipped in 2-8°C | shipped in 2-8°C | shipped in 2-8°C |
| storage temp. −70°C | storage temp. 2-8°C | storage temp. 2-8°C | storage temp. 2-8°C |
| Quality Level 200 | Quality Level 100 | Quality Level 100 | Quality Level 100 |
Klasa składowania
11 - Combustible Solids
Co się dzieje?
WGK 1
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Could you please supply the exact sequence of GFP (plasmid) - best as a UniProt ID that was used to transfect HEK293T?
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What is the purity of the samples? Are there any lipid particle contaminants? (any particles with phosphatidylserine besides the EV's themselves) - was FBS used in the medium culture of the cell line?
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For Product No. SAE0193, Exosome Standards, the purity can be found on the Certificate of Analysis as % Fluorescence. Unfortunately, this product is not tested for impurities. The initial growth medium of HEK293T cells contains FBS, but in the next stages, it changes to a medium without FBS.
Please navigate to the DOCUMENTATION section of the Product Detail Page to access a Certificate under ‘Certificate of Analysis’:https://www.sigmaaldrich.com/product/sigma/sae0193#product-documentation
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How is the GFP expressed at the exosomes' surface?
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The mechanism of expression of GFP at the exosome surface is currently not available. The public data sheet describes that the exosomes express the fluorescent protein GFP on the surface of their membrane, to allow their detection by instruments equipped with green fluorescence detectors, e.g. 488 nm laser. Please see the link below to review the product datasheet:
https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/product/documents/351/804/sae0193pis-ms.pdf
In addition, the following references may also be of interest:
Extracellular vesicles: exosomes, microparticles, their parts, and their targets to enable their biomanufacturing and clinical applications
https://www.sciencedirect.com/science/article/pii/S095816691830140X?via%3DihubShedding light on the cell biology of extracellular vesicles
https://pubmed.ncbi.nlm.nih.gov/29339798/The biology and function of exosomes in cancer
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4811149/EV-TRACK: transparent reporting and centralizing knowledge in extracellular vesicle research
https://www.nature.com/articles/nmeth.4185The generation and use of recombinant extracellular vesicles as biological reference material
https://www.nature.com/articles/s41467-019-11182-0Helpful?
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How is the particle number measured and is there any reference we can look into?
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The size distribution of recombinant exosomes are measured by nanoparticle tracking analysis. Please see the product data sheet: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/product/documents/351/804/sae0193pis-ms.pdf
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Hello ! How long do you think this product (powder) can hold at -20°C ? Will it last for a month or a week ? Thanks !
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We have no information regarding stability at -20deg C. We know that working solutions can be stored at 2-4 deg C for one day.
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