大豆胰蛋白酶抵制剂 英文名称: STI |
型号:null 产品货号: 0173 |
价格:请致电:010-57128832,18610462672 |
品牌: 美国sciencell |
北京裕恒丰科技有限公司,已成功代理美国Sciencell公司细胞生物学产品十余年。多年来,裕恒丰一直秉承信誉至上的原则,在点滴中慢慢地提升企业信誉,树立企业形象,我们始终以热心的服务和专业的技术支持,为广大科研工作者提供了优质的细胞及分子生物学产品。在未来的发展中,我们将继续努力打造企业品牌,北京裕恒丰不仅希望您能聆听到我们的心声,更期待您能亲自体验我们的服务,北京裕恒丰欢迎您的光临。 温馨提示:ScienCell产品仅用于科研,不能用于人或动物以及体外诊断应用。如预购买产品请登陆ScienCell唯一官网(www.sciencellonline.com)寻找正规代理商,以确保您的实验顺利进行。 大豆胰蛋白酶抵制剂 货号0173 产品介绍 Soybean Trypsin Inhibitor (STI) can be used to neutralize the effects of Trypsin/EDTA (Cat. #0103) after the release of cells from a culture surface. It is formulated with a trypsin inhibitor (5mg/ml) isolated from Glycine max (soybean) and inhibits trypsin at a 1:1 molar ratio [1, 2]. STI is a sterile, phosphate buffered saline solution. The product is calcium- and magnesium-free and has a pH of 7.4 at room temperature. 使用说明 The trypsin concentration and incubation time required to remove cells from the culture surface is dependent on cell type, population density, and serum concentration in the growth medium. Using a concentration too high or for too long will damage cell membranes and may result in cell death. If unsure about the concentration and duration of trypsin to use, begin with a low concentration and monitor the change in cell morphology (rounding up) under a microscope. 1) Aspirate medium from culture vessel and wash the cells with Ca+2 and Mg+2-free salt solution (DPBS, Cat. #0303) to remove all traces of serum. Remove salt solution by aspiration. 2) Dispense enough trypsin/EDTA solution into culture vessel to completely cover the cells and place in 37°C incubator for 1-2 minutes or until 80% of cells have rounded up (as monitored with microscope). Note: Use ScienCell T/E solution (Cat. #0103) that is optimized to minimize cell damages due to over trypsinization. 3) Remove the trypsin/EDTA solution by aspiration and return closed culture vessel to incubator for another 1-2 minutes (no solution in the vessel at this moment). 4) At the end of incubation, gently tap the side of the flask to dislodge cells from the surface. Check under a microscope to make sure that all cells detached. 5) Add STI to the cells as soon as possible to inhibit further tryptic activity which may damage cells. Transfer detached cells to a centrifuge tube. Note: The volume of STI required depends on the vessel surface area and trypsin concentration used. We recommend 5 ml for a T-75 flask. 6) Rinse the flask with another volume of STI to collect the residual cells. 7) Examine the flask under a microscope for a successful cell harvest by looking at the number of cells being left behind; there should be less than 5%. 8) Centrifuge the tube at 1000 rpm for 5 minutes. Resuspend cells in culture medium. Further dilution can be made, if required, for cell counts and/or subculturing.
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