"Heyuan Liji" is a joint venture between Heyuan Biotechnology (stock code: 688238) and Liji Biotechnology, specializing in the "Liji Biotechnology" and "Life-ilab" reagent brands

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EZ Trans Cell Transfection Reagent (Efficient)

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Product Item Number
Product Specifications
original price
  • AC04L091
    1mL
    300
  • AC04L092
    50mL
    3200
Product Description Product FAQ COA Product Literature MSDS Operation Video

Product Description

EZ Trans Cell Transfection Reagent (Efficient), as a new generation of transfection reagents, its transfection principle is that positively charged cationic polymers and negatively charged phosphate groups in nucleic acids form a positively charged complex, which interacts with negatively charged proteoglycans on the cell surface and enters the cell through endocytosis.

This product has been optimized by Li Ji Biotechnology and has the characteristics of high transfection efficiency, low cytotoxicity, simple operation, good repeatability, and wide applicability.

A high scoring article is displayed in the product literature, and more information can be found on the official website - Resource Support - Literature Research.

More cases can be found on the official website - Resource Support - Case List Appreciation and Query. 

Product advantages

1. The raw material of this product is cationic polymer, which is very similar to cationic liposomes and can basically completely replace Li * *;

2. The dosage and usage are the same as Li * *, and the price of the large packaging is only 1/40 of theirs, bringing you the ultimate cost-effectiveness.

3. Case list and literature can be found on the official website - Resource Support!

Product components

Product Name

Specifications

EZ Trans Cell Transfection Reagent (Efficient)

1 mL

EZ Trans Cell Transfection Reagent (Efficient)

50 mL


Transportation and Preservation

Blue ice transportation. Store at 4 ℃, valid for 12 months. [Note]: Do not freeze!

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This product is limited to scientific experimental research and cannot be used in clinical diagnosis, treatment, or other fields.

    • 问:李记有3款转染试剂,这3款有什么区别?和Li**对比效果如何?

      答:我司自行测试与收集客户反馈数据,得到类似结论:效率方面:EZ Trans Plus>Li**2000≈EZ Trans(高效)>Li** 3000>EZ Trans(低毒)。 毒性方面:EZ Trans(低毒)≈Li**3000<EZ Trans Plus<EZ Trans(高效)≈Li**2000。"


    • 问:我们传的细胞有抗生素,抗生素是绝对会影响转染效率吗?

      :能不加尽量不加,理论上抗生素进不到细胞内,但是在转染试剂的作用下,细胞的通透性增加,抗生素可能进到细胞内,对实验结果完成影响。


    • 问:protocol提到,要用Opti-MEM稀释质粒和转染试剂。不能用1640稀释么?另外质粒和转染试剂为什么要先稀释然后再混合?不能把转染试剂直接加到质粒溶液中混合,然后再加培养基稀释么?

      答:EZ Trans细胞转染液属于阳离子类型的转染试剂,它与DNA形成复合物需要一定的条件,在合适的浓度下,有利于阳离子包裹DNA形成良好形态的复合物进入细胞。如果直接把两者直接混合,两者容易很快形成聚合物,聚集相态多样,有可能使DNA暴露在表面,不容易进入细胞,进而降低转染效率。所以EZ Trans和DNA的混合顺序也很重要。 培养细胞大多会用到胎牛血清,血清成分复杂,没有人能说清成分及含量。细胞转染液成分比较明确,但是不能确定是会不会与胎牛血清的不知名成分结合,事实上这种现象在大多数转染试剂中都会造成不良影响,所以在形成EZ Trans-DNA复合物过程中要避免血清的影响。


    • 问:protocol提到,“24-48小时内检测转染效率”指的是去除含复合物的培养液换成含血清的培养基之后的24-48h,还是指加入复合物后转染24-48h?

      答:所有时间都是从EZ Trans-DNA复合物与细胞接触开始算。


    • 问:我就是问的体内直接转染小鼠。你们现有的protocol是体外实验的方法?

      答:体内直接转染目前最多的是腺病毒,慢病毒,腺相关病毒。转染试剂直接在体内用的报道我们目前没有听过。现有的做法是细胞在体外培养,转染筛选后再打入体内。


    • 问:protocol提到:EZ Trans都进行转染DNA,而我现在是要转染siRNA,可以实现么?

      答:转染RNA,可以转的,但因为对不同细胞毒性不同,所以对RNA转染后的效率,和研究结果需要摸索(目前收集数据下来,有一半的客户反馈可以转RNA,一般客户反馈效果不好)。 这方面和脂质体转染一样,一般转染RNA都是研究功能的,转染试剂的细胞毒性对判定小RNA的功能,可能有干扰,需要老师做预实验


    • 问:protocol提到,是optimem培养基,那我们在cd2培养基中,可以用你们的EZ Trans进行转染么?

      答:可以用这个培养基,只要不影响细胞生长就行。只不过转染配置的过程中,不加血清就行。 如果不能用optimem来配制和转染,只能用cd2,那他就用cd2来配制和转染,当然最好能做下预实验。


    • 问:转染效率低:制备DNA-转染试剂复合物时存在干扰或抑制因素

      答:由于血清和抗生素会干扰DNA-转染试剂复合物的形成,在制备时,请使用无抗生素、无血清培养基或Opti-MEM培养基


    • 问:转染效率低、细胞毒性大-细胞密度未优化

      答:在DNA转染和DNA-siRNA共转染过程中,细胞密度控制在60%-70%之间;在siRNA转染过程中,细胞密度控制在50%左右


    • 问:怎么确定确定实验的转染效率?

      答:建议每次转染时,设定一个阳性对照,如绿色荧光蛋白(GFP)。


    • 问:转染效率低-将转染复合物长时间放置于室温

      答:EZ Trans细胞转染试剂应保存在4℃。转染复合物的最佳放置试剂和温度是室温条件下10-20分钟,长时间放置会显著地降低转染效率,请务必控制放置时间在20分钟之内。


    • 问:转染效率低-高转速离心转染复合物

      答:在形成转染复合物时,标准操作步骤推荐数秒内涡旋混合转染试剂和DNA或siRNA以生产高效转染复合物。如果想将粘附于管壁的复合物离心,请务必使用极低转速离心,如80g离心5秒。


    • 问:细胞毒性大-DNA用量太大

      答:建议绘制量效关系曲线来确定最佳的DNA用量。


    • 问:细胞毒性大-转染试剂用量太大

      答:建议绘制量效关系曲线来确定最佳的转染试剂用量。


    • 问:细胞毒性大-转染时细胞状态较差

      答:EZ Trans细胞转染试剂的转染效率不受培养液中的血清影响,因此建议转染过程中细胞的培养液使用含有10%胎牛血清和抗生素的完全培养液以改善细胞的状态。


    • 问:细胞毒性大-稳定转染时抗生素加入太早

      答:请在转染48h后加入选择用抗生素。


Fill in the product batch number for querying

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[{"text1":"Li Ji has three transfection reagents, what is the difference between these three? How does it compare to Li * *?","text2":"Our company conducted self testing and collected customer feedback data, and obtained similar conclusions: in terms of efficiency, EZ Trans Plus>Li * * 2000 \u2248 EZ Trans (high efficiency)>Li * * 3000>EZ Trans (low toxicity). Toxicity: EZ Trans (low toxicity) \u2248 Li * * 3000 \uff1c EZ Trans Plus \uff1c EZ Trans (high efficiency) \u2248 Li * * 2000. \""},{"text1":"Do antibiotics have an absolute impact on transfection efficiency in the cells we transmit?","text2":"It is possible to avoid adding antibiotics as much as possible. In theory, antibiotics cannot enter cells, but under the action of transfection reagents, the permeability of cells increases, and antibiotics may enter cells, which may affect the completion of experimental results."},{"text1":"The protocol mentions diluting plasmids and transfection reagents with Opti MEM. Can't we dilute it with 1640? Why do plasmids and transfection reagents need to be diluted before mixing? Can't the transfection reagent be directly added to the plasmid solution and mixed, and then diluted with culture medium?","text2":"EZ Trans cell transfection solution belongs to cationic transfection reagents, which require certain conditions to form complexes with DNA. At appropriate concentrations, it is beneficial for cations to wrap DNA and form well shaped complexes into cells. If the two are directly mixed, they are prone to quickly form polymers with diverse aggregation phases, which may expose DNA to the surface and make it difficult to enter cells, thereby reducing transfection efficiency. So the mixing order of EZ Trans and DNA is also important. Most cells are cultured using fetal bovine serum, which has complex components and no one can explain its composition and content. The composition of the cell transfection solution is relatively clear, but it cannot be determined whether it will bind with unknown components of fetal bovine serum. In fact, this phenomenon can cause adverse effects in most transfection reagents, so it is necessary to avoid the influence of serum during the formation of EZ Trans-DNA complexes."},{"text1":"The protocol mentions that \"testing transfection efficiency within 24-48 hours\" refers to 24-48 hours after removing the culture medium containing the complex and replacing it with serum containing culture medium, or 24-48 hours after adding the complex and transfecting?","text2":"All time starts from the contact between EZ Trans-DNA complex and cells."},{"text1":"I just asked about directly transfecting mice into the body. Is your existing protocol an in vitro experimental method?","text2":"The most commonly directly transfected viruses in the body are adenoviruses, lentiviruses, and adeno-associated viruses. We have not heard of any reports of transfection reagents being used directly in vivo. The current approach is for cells to be cultured in vitro, transfected and screened, and then injected into the body."},{"text1":"The protocol mentions that EZ Transs are all transfected with DNA, but now I want to transfect siRNA. Can this be achieved?","text2":"RNA transfection is possible, but due to different cell toxicity, the efficiency and research results of RNA transfection need to be explored (currently, half of the customers have reported that RNA transfection is possible, but the general customer feedback is not good). In this regard, like liposome transfection, RNA transfection is generally focused on studying its function. The cytotoxicity of transfection reagents may interfere with the determination of the function of small RNAs, and teachers need to conduct preliminary experiments"},{"text1":"The protocol mentioned that it is optimem medium. Can we use your EZ Trans for transfection in CD2 medium?","text2":"This culture medium can be used as long as it does not affect cell growth. However, during the transfection configuration process, serum is not added. If optimem cannot be used for preparation and transfection, and only CD2 can be used, then he will use CD2 for preparation and transfection, and it is best to conduct a preliminary experiment."},{"text1":"Low transfection efficiency - no high efficiency DNA transfection reagent complex generated","text2":"When preparing DNA transfection reagent complexes, please do not use products containing serum. In most cases, efficient DNA transfection reagent complexes can be obtained by using serum-free DMEM culture media. We suggest using serum containing mediators for transfection, as the single host complex must form in serum-free medium. Note: It is best to avoid Opti MEN culture medium even if its serum content is low"},{"text1":"Low transfection efficiency - there are inhibitors that inhibit the formation of DNA transfection reagent complexes during the process of generating DNA transfection reagent complexes","text2":"The culture medium without serum is the key to the formation of efficient DNA transfection reagent complexes. During the process of generating complexes, avoid using chemicals such as high concentrations of phosphate, chondroitin sulfate, hyaluronic acid, dextran sulfate, or other sulfated proteoglycans"},{"text1":"Low transfection efficiency - the transfection reagent complex contains serum","text2":"When preparing the DNA grabbing reagent complex, please use serum-free medium or Opti MEM culture. In most cases, using serum-free DMEM culture medium can yield DNA transfection reagent complexes that improve efficiency."},{"text1":"Low transfection efficiency, high cytotoxicity - cell density not optimized","text2":"During DNA transfection and co transfection with DNA siRNA, cell density is controlled between 60% -70%; During siRNA transfection, cell density is controlled at around 50%"},{"text1":"How to determine the transfection efficiency of the experiment?","text2":"It is recommended to set a positive control, such as green fluorescent protein (GFP), during each transfection."},{"text1":"Low transfection efficiency - placing transfected complexes at room temperature for a long time","text2":"The EZ Trans cell transfection reagent should be stored at 4 \u2103. The optimal placement reagent and temperature for transfection complexes are 10-20 minutes at room temperature. Prolonged placement can significantly reduce transfection efficiency. Please make sure to control the placement time within 20 minutes."},{"text1":"Low transfection efficiency - high speed centrifugal transfection of complexes","text2":"When forming transfection complexes, standard operating procedures recommend vortex mixing transfection reagents and DNA or siRNA within a few seconds to produce efficient transfection complexes. If you want to centrifuge the composite adhered to the pipe wall, be sure to use extremely low speed centrifugation, such as 80g centrifugation for 5 seconds."},{"text1":"High cytotoxicity - excessive dosage of DNA","text2":"Suggest drawing a dose-response curve to determine the optimal DNA dosage."},{"text1":"High cytotoxicity - excessive amount of transfection reagent used","text2":"Suggest drawing a dose-response curve to determine the optimal amount of transfection reagents."},{"text1":"High cytotoxicity - poor cell state during transfection","text2":"The transfection efficiency of EZ Trans cell transfection reagents is not affected by the serum in the culture medium. Therefore, it is recommended to use a complete culture medium containing 10% fetal bovine serum and antibiotics during the transfection process to improve the cell state."},{"text1":"High cytotoxicity - antibiotics added too early during stable transfection","text2":"Please add selective antibiotics after 48 hours of transfection."}]

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Landline Phone Number:021-50778506 
Service Manager:18616108315

Address:4th Floor, Building 27, Lane 908, Ziping Road, Pudong New Area International Medical Park, Shanghai

E-mail:lsj0027@obiosh.com

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