Product Description
Overview
The HyStem-IRG QuickSet Kit is composed of Glycosil® (thiolmodified hyaluronic acid), Gelin-S® (thiol-modified gelatin), PEGCure (PEG-norbornene) and Irgacure 2959 Photoinitiator for photoinitiation. A transparent hydrogel forms after contents are mixed and exposed to UV light (365 nm). All vials are packaged as sterile lyophilized solids that are blanketed by argon and under a slight vacuum.
As one of the first hyaluronic acid-based light-controlled hydrogels, the HyStem®-IRGQuickSet Kit supports 3D cell culture for use in tissue engineering and small scale bioprinting applications. The HyStem®-IRGQuickSet Kitprovides increased temporal and spatial control making it ideal for micro-scale bioprinting. Gelation occurs after 30-60 seconds when exposed to ultraviolet light as compared to ~30 minutes using other hydrogel formulations.
Features
- Enables faster, flexible gelation times
- Controlled by UV light
- Optimized for micro-scale bioprinting applications
- Maintains standard characteristics of other HyStem hydrogels
The HyStem®UV QuickSet kit is composed of HyStem (thiol-modified hyaluronic acid), Gelin-S®(thiol-modified gelatin), UVlink™ (PEG-norbornene), Irgacure 2959 for photoinitiation, and DG water. A transparent hydrogel forms when contents are mixed and exposed to UV light. All vials are packaged as sterile lyophilized solids that are blanketed by argon and under a slight vacuum.
Directions for Use
INSTRUCTIONS FOR USE (Download the full directions for use PDF here)
The Irgacure solution is prepared by dissolving the lyophilized solid in DG Water. The Glycosil, Gelin-S, and PEGCure are reconstituted with the Photoinitiator solution. A 7.5 mL hydrogel at 1% (w/v) solution is produced when all reconstituted materials are mixed.
HyStem hydrogels (3 x 2.5 mL = 7.5 mL) should be prepared as follows:
- Allow Glycosil, Gelin-S, PEGCure, irgacure, and DG Water vials to come to room temprerature.
- Under aseptic conditions, use a syringe to add 10.0 mL of DG Water to the Irgacure Photoinitiator vial. Shake or vortex the vial at 37°C for 30 minutes or until fully dissolved.
- Add 1.0 mL of the reconstituted Photoinitiator to the Glycosil vial. Add 1.0 mL of the Photoinitiator solution to the Gelin-S vial.
- Place both vials horizontally on a rocker or shaker. Shake vials at 37°C for 30 minutes or until fully dissolved. It may take up to 60 minutes for the solids to fully dissolve.
Solutions should be clear and slightly viscous.
- Add 0.5 mL of Photoinitiator to the PEGCure vial. Place on a shaker and mix at 37°C for approximately 10 minutes.
- Combine the Glycosil, Gelin-S, and PEGCure solutions and mix well.
- Pipette solution into desired format (i.e. 96 well plate). Using a hand-held UV light source, expose the gel to the UV light (wavelength 365nm) until the gel reaches the desired stiffness. Gelation will occur between 15 seconds and 1 minute. Results may vary depending on the UV source manufacturer and/or plate design
Note: Gelation time and gel stiffness can be adjusted by varying the concentration of Glycosil, GelinS, or UVlink.
Note: Each kit component has been manufactured under aseptic conditions and tested for bacteria and fungus.
Product Q & A
Globular particles less than 75 kDa should be able to freely diffuse through a HyStem hydrogel.
When reconstituted using DG water, the pH of each HyStem component will be approximately 7.4-7.6.
One year from the date of receipt, if stored properly.
Any sterile, deionized, degassed water can be substituted for reconstitution. However, in order to ensure accurate and predictable dissolution and gelation times, our DG Water is highly recommended, as it is degassed, blanketed in argon, and has undergone validation testing with each HyStem component.
Gelin-S provides cellular attachment sites when incorporated in the hydrogel. Gelin-S is thiol-modified, denatured collagen I, derived from either bovine or porcine sources. Gelin-S is included in all HyStem-C and HyStem-HP kits.
Gelin-S has been thiol-modified in the same manner as the hyaluronan in Glycosil (or Heprasil), so that it covalently crosslinks with the Extralink in the HyStem hydrogels.
Yes. Peptides that contain a cysteine residue can be used. The cysteine residue must be present for the peptide to be covalently bonded to the hydrogel substrate.
Yes. ECM proteins, such as laminin, collagen, fibronectin, or vitronectin can be non-covalently incorporated into the hydrogel prior to crosslinking.
HyStem hydrogels and sponges differ in hydration and homogeneity. HyStem sponges are typically polymerized hydrogels that are subsequently freeze-dried. The resulting sponge is a fibrous, mesh network with pores and niches that enable cells to infiltrate and adhere. A true HyStem hydrogel is an encapsulating liquid that polymerizes around suspended cells in culture.
No. The compliance of the hydrogels is set by the amount of Extralink crosslinker added, the concentration of Glycosil (or Heprasil) and Gelin-S used, and the ratio of Glycosil (or Heprasil) to Gelin-S. Once this chemical structure of the hydrogel is fixed, it is not altered by prolonged exposure to cell culture medium.
HyStem sponges can be terminally sterilized by E-beam. HyStem hydrogels have not yet been validated for use with E-beam sterilization methods. HyStem hydrogels are not terminally sterilized by gamma irradiation.
Gelation time is affected by multiple aspects of the gel’s composition.One way to change the gelation time of a hydrogel is to vary the amount of crosslinker used. Gels with a lower amount of Extralink crosslinker will have a longer gelation time than those with a higher amount of crosslinker. Changing the amount of crosslinker will produce slight changes in gelation time.Gelation time can be dramatically changed by varying the Glycosil (or Heprasil) and Gelin-S concentrations. Concentrated solutions of Glycosil (or Heprasil) and Gelin-S will create a solution with a much shorter gelation time. This can easily be done by reconstituting the components in a smaller volume of DG Water. Alternatively, diluting these components in larger volumes of DG Water will dramatically increase the total time to form the hydrogel.
HyStem Hydrogels are virtually transparent and should not interfere with microscopy.
HyStem hydrogels may generate mild inflammation as part of the body’s natural healing process in response to injury. HyStem hydrogels do not trigger immune response when used in vivo. (These products are not for human use)
HyStem is degraded in vivo by matrix metalloproteinases (collagenases) and hyaluronidases.
Trypsin, Dipase, collagenase, and hyaluronidase have been used to help detach cells from the surface or from within HyStem hydrogels.
In general, the pore size for HyStem-C and HyStem-HP hydrogels is ~17 nm.
Product Applications
General Notes for Bioprinting with HyStem®-IRG QuickSet Kit:
The following guidelines were developed for a modified Bioforce Nano eNabler™ and exact requirements and parameters will vary between platforms and applications. While other platforms have not been evaluated, any system capable of liquid handling and amenable to UV exposure should be easily adaptable for the HyStem®-IRG QuickSet matrix.
• High relative humidity (>90%) is required in the printing chamber to prevent desiccation of printed constructs.
• If printing live cells, verify that the surface patterning tool or print head is large enough to accommodate cells (approximately 50-100 µm).
• Where possible, UV/ozone treatment of printing tools to enhance hydrophilic nature of the printing channel materials can improve consistency in printing.
• The matrix is a clear liquid with minimally increased viscosity compared to water at room temperature. Upon exposure to 365nm UV light, rapid polymerization occurs resulting in a viscoelastic solid. A 4W handheld UV lamp held approximately 2 cm from the surface of the gel is sufficient to polymerize a gel in as little as 15 seconds.
• Conducting a small pilot study to determine the appropriate exposure time for a given application is strongly recommended as matrix stiffness is directly correlated to exposure time and can impact survivability, proliferation, and differentiation.
Note: The HyStem®-IRG QuickSet Kit has not been thoroughly evaluated for thick, multilayer constructs.
Product Certificate of Analysis
Safety and Documentation
Certificate of Origin
Safety Data Sheet
Product Disclaimer
This product is for R&D use only and is not intended for human or other uses. Please consult the Material Safety Data Sheet for information regarding hazards and safe handling practices.
美国AdvancedBioMatrix（简称ABM） www.advancedbiomatrix.comAdvancedBioMatrix（简称ABM）是美国一家著名的生物公司，获得了AllerganInc的授权(Allergan用25年时间不断完善胶原蛋白相关的产品的生产工艺)，将Allergan的专业和技术用于蛋白生产与检测，致力于为组织工程、细胞分析及细胞增殖等研究领域提供优质稳定的产品。AdvancedBioMatrix不断丰富已有产品线，目前可为三维细胞培养提供各种胶原蛋白、纤连蛋白、玻连蛋白、水性凝胶、不同粘度与分子量的透明质酸以及低代成纤维细胞等。在美国全部产品授权Sigma销售。AdvancedBioMatrix是组织培养，细胞分析和细胞增殖三维（3D）应用的生命科学领域的领导者。我们的产品被公认为纯度，功能性和一致性的标准。我们在生产，分离，纯化，冷冻干燥，细胞培养和蛋白质测试，粘附肽，附着因子，底物刚性和其他3D矩阵产品方面拥有丰富的专业知识。我们的专业技术和知识正在被用来确保我们的产品质量最高，批次之间一致且易于为我们的研究客户使用。
美国AdvancedBioMatrix是3D组织培养、细胞检测和细胞增殖等领域实验解决方案的佼佼者。AdvancedBioMatrix在分离、纯化、冻干、细胞培养和蛋白检测、多肽粘附、附着因子、基质硬度和其他3Dmatrix 产品开发方面有着丰富的经验。AdvancedBioMatrix的研发经验和专业知识确保其产品可达到最佳质量，并保证产品之间一致性，方便研究客户使用。以下为AdvancedBioMatrix3DMatrices 产品竞争优势：1. 提供高纯度和成分确定的胞外基质；2. 超过1000余篇文献引用PureCol产品，品质非常均一；3. 在3D培养基领域可提供最全面的产品线；4. 唯一可提供特异性刚性有机硅基板的公司（CytoSoft）;5. 唯一可提供可溶性丝纤蛋白的供应商（可运用于多种3D培养）；6. 如果客户首次接触3D胶原凝胶，AdvancedBioMatrix还是唯一的预制胶原蛋白(PureColEZGel)供应商；
以下产品为AdvancedBioMatrix全球畅销品：1.PureCol 牛源I型胶原蛋白 3mg/ml#5005-100ML2.Nutragen牛源I型胶原蛋白 6mg/ml#5010-50ML3.FibriCol 牛源I型胶原蛋白 10mg/ml#5133-20ML4.VitroCol 人源I型胶原蛋白 #5007-20ML5. 弹性蛋白原 #5052-1MG6.ECMSelectArraykitUltra-36#5170-1EA7.CytoSoft（刚性可变的基底，AdvancedBioMatrix最新添加产品5190-7EA）8. 人III型胶原蛋白 #5021-10MG9. 人IV型胶原蛋白 #5022-5MG10.SilkFibroin溶液 #5154-20ML11.Fibronectin#5080-5MG12.Vitronectin#5051-0.1MG
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今天文章就简单整理了一下最近遇到的问题，有些问题对你来说可能很简单，但是还是会给一些科研菜鸟带去小麻烦，特整理了这么个专场来涨涨姿势。
这里就简单整理了5个问题，具体内容如下：
小编自己在各大论坛看到最多的三个答案：
1）48T可做42个样本加6个标准曲线；96T可做90个样本加6个标准曲线
2）以96T试剂盒来算，定量的试剂盒一般可以做90个左右的样品，定性的试剂盒可以做94个左右的样品
3）96T的ELISA试剂盒，去除标准品复孔检测，最多还能检测80个标本；48T的最多30个样本。
2、elisa试剂盒96T的能做检测多少血清样品？板能重复利用吗？
96T，一般做复孔的话，做标准曲线需要16个孔，剩下80个孔就可以做40个样本。这个板不能重复利用。而且配套的试剂也只是够一块板子用的。
3、想请教一下，我想用elisa法测血清里的一种抗原，查了资料，发现没有现成的试剂盒用，现在就有2种备选方案，一种是买抗体对自己包被（查了R&D等大公司都没有可用于elisa的单抗）。哪种比较好呢？自己包被的会不会比国产的试剂盒可靠呢？
如果你觉得技术不错有队其他公司不放心，可以自己购买抗体对自己包被，这个就是麻烦点，自己包被用着放心，舒心；
另外国内还是有一些资质不错的公司，如北京达科为，上海巧伊，依科赛，深圳欣博盛等等
4、western和ELISA处理样本有何差别？
WesternBlot样品制备要加蛋白裂解液（含有蛋白酶抑制剂），然后冰上研磨，收集于EP管，冰上裂解30min，4度12000rpm离心15min，取上清分装，即得到蛋白样品。建议直接电泳，多余的-80保存。建议分装的蛋白每支略多于一次上样量，一次性用完一支，避免反复冻融。
ELISA样品，直接脑组织冰上匀浆，收集于EP管，同上一样离心，大约220-250ul每支分装（因为ELISA上样量基本都是每孔100ul，做复孔，每个样品2孔，就需要200ul，为了避免不够2孔，分装时要大于200ul每支），直接实验。多余的-80保存，一样避免反复冻融。
不过ELISA最好少量样品进行预实验，或者查阅文献，看看大概组织里有多高浓度，选择合适的试剂盒，测量范围要与组织浓度相符。避免浓度过高测量不准，或者浓度过低，小于试剂盒最低可测浓度。
5、Elisa试剂盒该买哪家公司的呢？
提出这个问题的朋友其实该打，目前国际上各个品牌的试剂盒生厂商，都会有其偏重点，像R&D在细胞因子方面的试剂盒就非常牛逼，而其他牌子也一样的。
Bender：粘附分子方面的试剂盒；
Cayman：花生四烯酸类产品的试剂盒；
Merck(Linco)：内分泌研究方面的试剂盒；
Tips：
1、买Elisa试剂盒时，尽量先查文献，通过文献找品牌，再找供应商，找供应商就找正规代理商，千万不要去干“赔夫人又折兵”的蠢事。
2、ELISA中，复孔就是同一个样品加到至少两个孔中（一般3个或4个），最后取其平均值作为样品的读数，这样测得的结果才有说服力！
做复孔是为了较好的较少组内差异，如果血清不足不做复孔也可以。
第二步、明确编码该蛋白的基因与其它哪些物种同源性最好
第三步、寻找检测这些物种蛋白的试剂盒
第四步、咨询商家ELISA是试剂盒使用的抗体类型:多抗还是单抗? 单抗是针对什么抗原决定簇的?
第五步、 做出自己的判断该买哪个试剂盒，或者实在没有可以找公司进行订制实验
1、采用何种原料和抗体,是否高效、灵敏、特异
2、规范包被操作,吸附是否均匀
3、重复性、可靠性
6、是否提供技术服务
7、适用于血浆、血清、组织匀浆液、细胞培养上清液、尿液等多种类型的样本
8、可检测动物类型是否丰富
9、可检测指标是否齐全
