The concentration of each component is listed in the Product Information Sheet. Please see the product documentation section:
https://www.sigmaaldrich.com/product/sigma/i1884#product-documentation
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| Größe/SKU | Verfügbarkeit | Preis |
|---|---|---|
1 vial | Warenkorb auf Verfügbarkeit prüfen | € 371,00 |
Über diesen Artikel
General description
INSULIN ist ein Polypeptidhormon, das die Aufnahme von Glucose und Aminosäuren fördert und dieser Eigenschaft möglicherweise die beobachtete mitogene Wirkung verdankt.
TRANSFERRIN ist ein Eisentransportprotein. Eisen ist ein essenzielles Spurenelement, das in freier Form toxisch sein kann. Um Zellen in Kultur zu nähren, wird es an Transferrin gebunden in Serum zugeführt.
SELEN ist ein essenzielles Spurenelement, das normalerweise vom Serum bereitgestellt wird.
Ernährungsstudien zeigen, dass die beschriebenen Zusatzbestandteile von den meisten Säugetierzellen genutzt werden. Sie verbessern die Zellproliferation und verringern die Serumanforderung von vielen Zelltypen. Wenn der bereitgestellte Zusatz mit 2 bis 4 Prozent Serum genutzt wird, ist die Proliferation Berichten zufolge ähnlich wie in Medium, das mit 10 Prozent Serum versetzt ist.
Application
- Medium 199 (M199) Medienzusatz für Herzmuskelzellkulturen
- Roswell Park Memorial Institute (RPMI) 1640 Mediumbestandteil für pluripotente Stammzellenkultur (iPSC)
- Dulbecco′s Modified Eagle Medium (DMEM)-Zusatz in ID8-Eierstockkarzinomzellen
Preparation Note
Other Notes
1 of 1
Dieser Artikel | |||
|---|---|---|---|
| description γ-irradiated, lyophilized powder, BioXtra, suitable for cell culture | description liquid, sterile-filtered, BioReagent, suitable for cell culture | description liquid, sterile-filtered, BioReagent, suitable for cell culture | description liquid, sterile-filtered, BioReagent, suitable for cell culture |
| form lyophilized powder | form liquid | form liquid | form liquid |
| technique(s) cell culture | mammalian: suitable | technique(s) single cell analysis: suitable, cell culture | mammalian: suitable | technique(s) cell culture | mammalian: suitable | technique(s) cell culture | mammalian: suitable |
| sterility γ-irradiated | sterility sterile-filtered | sterility sterile-filtered | sterility sterile-filtered |
| biological source human plasma | biological source - | biological source - | biological source - |
| shipped in ambient | shipped in ambient | shipped in ambient | shipped in ambient |
| storage temp. −20°C | storage temp. 2-8°C | storage temp. 2-8°C | storage temp. 2-8°C |
Lagerklasse
11 - Combustible Solids
Was ist los?
WGK 3
Flammpunkt (°F)
Not applicable
Flammpunkt (°C)
Not applicable
PSA (Persönliche Schutzausrüstung)
Eyeshields, Gloves, type N95 (US)
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which is the concentration of each component? Insulin-transferrin-sodium selenite media supplement. I1884
1 answer-
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When we add this ITS at 100X to our Ham's F12 medium it drastically adjusts the color, and the pH drops to ~6.5 from 7.2. The ITS is made up exactly as directed with 5ml acidified water and 45ml sterile water and this still occurs, why? Medium is buffered
1 answer-
The 100X stock solution of this product is prepared by reconstituting this product in 5 mL water containing 0.1 mL of Acetic acid. In general, culture media are buffered using Sodium Bicarbonate or other suitable buffers. While prepared in acidified water, the volume of the ITS stock solution added is typically insufficient to effect the pH of a buffered medium. The molarity of the acetic acid is not specified, which may be contributing to the drop in pH of the final medium. Reducing the molarity of the Acetic acid may resolve the issue, 1 M is commonly used. See the link below, at the bottom of page 1, for recommended preparation instructions. To discuss further, we kindly ask you to navigate to the link https://www.sigmaaldrich.com/techservice, click on "Report Product Issues" under the Products Section with all the required information so that a member of our team can reach out to you to assist further. Thank you.
https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/product/documents/365/201/p6024pis.pdf
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The *I1884 needs to be prepared with acidified water, which acidifies the pH of the medium when it is added to the culture medium, is it necessary to adjust the pH of the I1884 to pH 7-7.4, after preparing it and before adding it to the medium?
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Adjusting the pH is not necessary or recommended. This is prepared at a 100X concentration. The volume added to buffered culture medium for the 1X amount is not sufficient to cause a shift in the pH.
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How should I reconstitute I1884, Insulin-transferrin-sodium selenite media supplement (ITS Supplement)?
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First, make acidified water by adding acetic acid to reduce the pH to approximately 2. To prepare a stock solution, dissolve the contents of the vial in 5 mL sterile, acidified water and swirl to dissolve. Then add 45 mL of sterile water. This prepared solution is at 100X. It is diluted 100 fold (1 ml to 100 ml) to give a 1X final concentration.
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What is the activity of insulin in I1884, Insulin-transferrin-sodium selenite media supplement (ITS Supplement)?
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The starting material has an activity of greater than or equal to 25.2 USP units/mg insulin. The concentration of insulin at 100X is 5 mg/L.
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What is the Department of Transportation shipping information for this product?
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Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
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What is the stability of I1884, Insulin-transferrin-sodium selenite media supplement (ITS Supplement), in solution?
1 answer-
The stock solution can be frozen in working aliquots. Avoid repeated freeze/thaw cycles. Frozen working aliquots will be stable for at least one year. The solution is stable at 2-8°C for 30 days.
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