Gibco™ I 型胶原酶分离自溶组织梭菌,包装形式为冻干非无菌粉末,供细胞或组织解离以及器官灌注等研究使用。我们保证 Gibco™ I 型胶原酶的活性大于 125 单位/mg。与其他胶原酶制备工艺相比,Gibco™ I 型胶原酶中的胶原酶、酪蛋白酶、梭菌蛋白酶和胰蛋白酶活性达到平均水平,非常适合消化脂肪、肾上腺以及肝细胞或组织。
How do I make the 1000X stock (100 U/µL) solution from Collagenase powder?
1. Add 1 mL Hanks' Balanced Salt Solution (HBSS) with calcium and magnesium directly to 1 g vial of Collagenase. Vortex gently to ensure complete dissolution. Transfer to a clean tube.
2. Determine volume of HBSS (with calcium and magnesium) required to bring collagenase solution to 100 U/µL (1000X stock solution). The activity is lot- specific. Rinse vial with this volume of HBSS (with calcium and magnesium), and combine. Filter sterilize 1000X stock solution with a low protein binding filtration unit.
Example: Assuming the lot you have purchased has an activity of 265 U/mg, this lot will have 265000 Units per mL when you reconstitute collagenase into HBSS (with calcium and magnesium) at 1 g/mL. In order to dilute 265000 U/L to 100000 U/mL (= 100 U/µL), you need to dilute the 1 g/mL enzyme solution 2.65 fold.
What reagents do you offer for cell dissociation, and what are the main differences between them?
Please use this selection chart that compares our cell dissociation reagents (https://www.thermofisher.com/us/en/home/life-science/cell-culture/mammalian-cell-culture/reagents/trypsin.html).
Interaction of human breast fibroblasts with collagen I increases secretion of procathepsin B.
Authors: Koblinski Jennifer E; Dosescu Julie; Sameni Mansoureh; Moin Kamiar; Clark Katherine; Sloane Bonnie F;
Journal:J Biol Chem
PubMed ID:12072442
'Interactions of stromal and tumor cells with the extracellular matrix may regulate expression of proteases including the lysosomal proteases cathepsins B and D. In the present study, we determined whether the expression of these two proteases in human breast fibroblasts was modulated by interactions with the extracellular matrix component, collagen ... More
Mechanism for peroxisome proliferator-activated receptor-alpha activator-induced up-regulation of UCP2 mRNA in rodent hepatocytes.
Peroxisome proliferator-activated receptor-alpha (PPARalpha)activators, fish oil feeding, or fibrate administration up-regulated mitochondrial uncoupling protein (UCP2) mRNA expression in mouse liver by 5-9-fold, whereas tumor necrosis factor-alpha (TNFalpha) also up-regulated UCP2 in liver. In this study, the mechanisms for PPARalpha activators-induced up-regulation of UCP2 mRNA, related to TNFalpha and reactive oxygen ... More