This product is formulated at a neutral to slightly alkaline pH using a HEPES buffer (pH 7.9–8.5) to enhance long-term stability and solubility during storage. This approach differs from some vendors who use a low pH formulation for immediate solubilization.
I9278
Insulin solution human
sterile-filtered, BioXtra, suitable for cell culture
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| Size/SKU | Availability | Price |
|---|---|---|
5 mL | Available to ship TODAYfromSIGMA ALDRICH Pte Ltd | $550.00 |
About This Item
Form:
solution
General description
Insulin is a two-chain polypeptide hormone produced by the β-cells of pancreatic islets. Its molecular weight is ~5800 Da. The α and β chains are joined by two interchain disulfide bonds. The α chain contains an intrachain disulfide bond.
Application
Insulin solution human has been used as a supplement in Dulbecco′s modified eagle′s medium (DMEM) to culture epithelial cell line and human endometrial cell line, minimum essential medium eagle to culture human breast adenocarcinoma cell line and medium 199 to culture normal ovarian cell line.
Insulin solution human is recommended for use in cell culture applications at 0.5 to 1mL per liter of medium.
Insulin solution human has been used for insulin tolerance test in mice and rats.[1] It has also been used for adipogenic differentiation of human embryonic stem cells (hESCs)-derived outgrowth cultures and hMSCs (human mesenchymal stromal cells).[2]
Insulin solution human has been used for insulin tolerance test in mice and rats.[1] It has also been used for adipogenic differentiation of human embryonic stem cells (hESCs)-derived outgrowth cultures and hMSCs (human mesenchymal stromal cells).[2]
Biochem/physiol Actions
Insulin plays a role in various cellular processes, such as promoting cell growth, regulating the cell cycle, and facilitating glucose uptake. It is commonly used as a protein supplement in serum-free mammalian cell culture media to help promote the optimal growth and maintenance of mammalian cells.
Physical form
stable 2-8 °C
Other Notes
InChI: 1S/C257H383N65O77S6/c1-29-131(23)205(313-193(339)104-259)252(393)317-204(130(21)22)248(389)288-159(75-82-200(349)350)217(358)282-156(71-78-189(263)335)221(362)308-183-116-403-404-117-184-243(384)305-178(111-324)240(381)294-162(88-123(7)8)225(366)295-168(95-140-53-61-146(329)62-54-140)228(369)283-154(69-76-187(261)333)218(359)290-161(87-122(5)6)223(364)285-158(74-81-199(347)348)220(361)302-174(101-190(264)336)235(376)298-170(97-142-57-65-148(331)66-58-142)231(372)309-182(242(383)304-176(255(396)397)103-192(266)338)115-402-401-114-181(214(355)273-107-194(340)278-153(72-79-197(343)344)216(357)281-151(51-42-84-271-257(267)268)212(353)272-108-195(341)279-166(93-138-46-36-32-37-47-138)227(368)297-167(94-139-48-38-33-39-49-139)230(371)299-171(98-143-59-67-149(332)68-60-143)238(379)320-208(135(27)327)254(395)322-85-43-52-186(322)246(387)286-152(50-40-41-83-258)222(363)321-209(136(28)328)256(398)399)311-250(391)203(129(19)20)316-236(377)164(90-125(11)12)292-229(370)169(96-141-55-63-147(330)64-56-141)296-224(365)160(86-121(3)4)289-210(351)133(25)277-215(356)157(73-80-198(345)346)287-247(388)202(128(17)18)315-237(378)165(91-126(13)14)293-233(374)173(100-145-106-270-120-276-145)301-239(380)177(110-323)280-196(342)109-274-213(354)180(113-400-405-118-185(310-244(183)385)245(386)319-207(134(26)326)253(394)306-179(112-325)241(382)318-206(132(24)30-2)251(392)312-184)307-226(367)163(89-124(9)10)291-232(373)172(99-144-105-269-119-275-144)300-219(360)155(70-77-188(262)334)284-234(375)175(102-191(265)337)303-249(390)201(127(15)16)314-211(352)150(260)92-137-44-34-31-35-45-137/h31-39,44-49,53-68,105-106,119-136,150-186,201-209,323-332H,29-30,40-43,50-52,69-104,107-118,258-260H2,1-28H3,(H2,261,333)(H2,262,334)(H2,263,335)(H2,264,336)(H2,265,337)(H2,266,338)(H,269,275)(H,270,276)(H,272,353)(H,273,355)(H,274,354)(H,277,356)(H,278,340)(H,279,341)(H,280,342)(H,281,357)(H,282,358)(H,283,369)(H,284,375)(H,285,364)(H,286,387)(H,287,388)(H,288,389)(H,289,351)(H,290,359)(H,291,373)(H,292,370)(H,293,374)(H,294,381)(H,295,366)(H,296,365)(H,297,368)(H,298,376)(H,299,371)(H,300,360)(H,301,380)(H,302,361)(H,303,390)(H,304,383)(H,305,384)(H,306,394)(H,307,367)(H,308,362)(H,309,372)(H,310,385)(H,311,391)(H,312,392)(H,313,339)(H,314,352)(H,315,378)(H,316,377)(H,317,393)(H,318,382)(H,319,386)(H,320,379)(H,321,363)(H,343,344)(H,345,346)(H,347,348)(H,349,350)(H,396,397)(H,398,399)(H4,267,268,271)/t131-,132-,133-,134+,135+,136+,150-,151-,152-,153-,154-,155-,156-,157-,158-,159-,160-,161-,162-,163-,164-,165-,166-,167-,168-,169-,170-,171-,172-,173-,174-,175-,176-,177-,178-,179-,180-,181-,182-,183-,184-,185-,186-,201-,202-,203-,204-,205-,206-,207-,208-,209-/m0/s1
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This Item | |||
|---|---|---|---|
| product line BioXtra | product line - | product line - | product line - |
| Quality Level 400 | Quality Level 200 | Quality Level 200 | Quality Level 300 |
| form solution | form powder | form lyophilized powder | form dry powder |
| technique(s) cell culture | mammalian: suitable | technique(s) cell culture | mammalian: suitable | technique(s) cell culture | mammalian: suitable | technique(s) cell culture | mammalian: suitable |
| concentration 9.5-11.5 mg/mL | concentration >75% | concentration - | concentration - |
| storage temp. 2-8°C | storage temp. −20°C | storage temp. −20°C | storage temp. −20°C |
Storage Class
12 - Non Combustible Liquids
flash_point_f
Not applicable
flash_point_c
Not applicable
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some vendors provide insulin solution in low ph， how come this one in neutral ph
1 answer-
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In which solution was insulin dissolved?
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This is in HEPES. 10mg/mL concentration in 25 mM Hepes
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What's the half-life of this insulin within the media at 37C?
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Unfortunately, the half-life of this insulin within the media at 37 °C has not been tested.
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Can I aliquot the insulin and freeze it? Is it still functional after thawing?
1 answer-
This product is recommended to be stored at 2-8°C. For research applications, freezing insulin solution is a common practice. However, solutions available on the commercial market for therapeutic use are not frozen to maintain maximum activity. No stability studies have been performed on the shelf life of frozen insulin solutions.
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What is the concentration of this solution in (Units/mL) i.e. if my stock is at a concentration of 11.1 mg/mL, what is that in Units/mL?
1 answer-
The specification for the product does not include units of potency.
However, the potency is typically about 28 -29 IU/mg.Helpful?
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What is the source of this insulin and is the solutuion expected to also contain proinsulin?
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This product is a biosynthetic product, produced by recombinant expression in yeast (Saccharomyces cerevisiae), with a synthetic gene insert encoding human insulin precursor. The proinsulin content is not among the testing specifications for this product.
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How is this insulin produced? In E.Coli? Yeast?...?
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This product is prepared from recombinant human insulin produced in Saccharomyces cerevisiae.
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Is this product suitable for insulin tolerance tests in mice
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This item has not been specifically tested for suitability in insulin tolerance. However, the product has been used successfully in a number of published papers. Please see the link below to review one such article:
https://pmc.ncbi.nlm.nih.gov/articles/PMC2785638/Helpful?
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How long does the insulin remain potent for if stored in the fridge?
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This product is assigned an expiration date of approximately 2 years from the date of Quality Release, when stored as directed at 2-8°C. The expiration date is lot specific and reported on the product label, as well as the Certificate of Analysis. Please see the link below to review a sample or lot specific Certificate:
https://www.sigmaaldrich.com/product/sigma/i9278#product-documentationHelpful?
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Is this insulin considered of fast or slow action?
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This product is intended for research use only and is not a Therapeutic insulin. The research grade insulin products are not defined by the Therapeutic types. There are analytical standards available for each type. Please see the links below to review additional product options for research use:
Insulin Glargine - Slow acting Insulin
https://www.sigmaaldrich.com/search/insulin-glargine?focus=products&page=1&perpage=30&sort=relevance&term=insulin%20glargine&type=productAspart Insulin - Fast acting Insulin
https://www.sigmaaldrich.com/search/insulin-aspart?focus=products&page=1&perpage=30&sort=relevance&term=insulin%20aspart&type=productLispro Insulin - Fast acting Insulin
https://www.sigmaaldrich.com/search/insulin-lispro?focus=products&page=1&perpage=30&sort=relevance&term=insulin%20lispro&type=productHelpful?
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