Description
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Transfection Reagent for 3LL Cells (Lewis Lung Carcinoma Cells)
- A nanoparticle-based liposome formulation
- Transfection protocols provided for transfection of proteins, DNA, mRNA, siRNA, shRNA and microRNA
- Transfection Enhancer reagent provided with the kit
- Produce higher level of recombinant protein expression with minimal disruption of normal cell function
- Generate physiologically relevant data you can trust
- Effective for plasmid DNA/siRNA co-transfection
- Low cytotoxicity
- Download in vitro 3LL transfection protocol: [PDF]
- Download 3LL CRISPR/Cas9 transfection protocol: [PDF]
- Download PowerPoint presentation for 3LL cells transfection kit: [PPT]
- Developed and manufactured by Altogen Biosystems
Transfection Efficiency:
Reagent exhibits at least 73% transfection efficiency of siRNA delivery. Transfection efficiency was determined by real-time RT-PCR.
Transfection Protocol and MSDS:
Download Altogen Biosystems 3LL Transfection Protocol: [PDF]
Download MSDS: [PDF]
3LL Cell Line:
Lung cancer is considered the most preventable malignancy globally. However, it is the deadliest form of cancer with very high mortality rates because of lack of adequate therapies and aggressive tumor cell growth. Rodent cell line models play an essential role in preclinical research to study novel therapeutic agents and treating human cancer. The LLC cell line is a well-studied mouse cancer model that is extensively employed as a transplantable malignancy model. Lewis Lung Carcinoma cells (also known as 3LL cells or LLC cells) got their name after Dr. Margaret R. Lewis of the Wistar Institute, who discovered carcinoma in 1951. This cell line has been known to show reduced metastatic ability when exposed to ultraviolet light. It has also been observed that the presence of cannabinoids suppresses cell growth. These cells could be useful for medical research for treatments to certain types of lung cancer, and many other molecular or cell biology studies. According to the recent data, the proliferative advantage of 3LL metastatic cells is achieved by the gene expression which prevents tumor cells from escaping hostile microenvironmental conditions. Altogen Biosystems provides nanoparticle-based transfection kits for this cell line.
Data:
Figure 1. GAPD mRNA levels were quantified using real-time RT-PCR in the cells transfected with siRNAs targeting GAPD or non-silencing siRNA. Forty-eight hours post-transfection, 3LL cells were harvested and analyzed by real-time RT-PCR for GAPDH mRNA expression levels. Data were normalized against the 18S rRNA signal. Control samples were either mock-transfected or untreated. Values are normalized to untreated sample. Data are means ± SD (n=3).
Figure 2. Protein expression of GAPDH in 3LL cells. DNA plasmid expressing GAPDH or siRNA targeting GAPDH were transfected into 3LL cells following Altogen Biosystems transfection protocol. At 72 hours post-transfection the cells were analyzed by Western Blot for protein expression levels (normalized by total protein, 10 µg of total protein loaded per each well). Untreated cells used as a negative control.
Selected in vivo transfection product citations (ALTOGEN® IN VIVO Transfection Kits used in the following publications):
- Nature. 2008 454(7203):523-7. Innate immunity induced by composition-dependent RIG-I …Saito et al [PDF]
- Nature Biotechnology. 2011 29(4):341-5. Delivery of siRNA to the mouse brain by … Alvarez-Erviti et al [PDF]
- RNA. 2010 16(11):2108-19. RNase L releases a small RNA from HCV RNA that refolds … Malathi et al [PDF]
- Diabetologia. 2012 55(7):2069-79. The p47phox- and NADPH oxidase organiser 1 … Youn et al [PDF]
- Circulation Research. 2010 15;107(8). Kruppel-like factor-4 transcriptionally regulates … Cowan et al [PDF]
- Hypertension. 2012 59(1):158-66. Role of uncoupled endothelial nitric oxide synthase … Gao et al [PDF]
- Jounal of Biological Chemistry. 2012 287(4):2907. Chaperoning of mutant p53 protein … Gogna et al [PDF]
- PLoS Pathogens. 2012 8(8) Uridine composition of the poly-U/UC tract of HCV RNA … Schnell et al [PDF]
- J Proteome Res. 2012(11) Retinal proteome analysis in a mouse model of oxygen-induced … Kim et al [PDF]
3LL Transfection Reagent
Altogen Biosystems:
Altogen Biosystems manufacturers cell type specific and preoptimized transfection products, elecroporation kits, and in vivo delivery reagents for life science research. Advanced formulation of reagents and optimized transfection protocols provide efficient intracellular delivery of protein, DNA, mRNA, shRNA and siRNA molecules. Read more about transfection technology at Altogen’s Transfection Resource.
Altogen Research Services:
Altogen Labs provides GLP-compliant contract research studies for pre-clinical research, IND applications, and drug development. Biology CRO services include: Xenograft models (30+), development of stable cell lines, ELISA assay development, cell-based and tissue targeted RNAi studies, safety pharm/tox assays, and other studies (visit AltogenLabs.com).
Volume Options:
- 0.5 ml (Catalog #1701)
- 1.5 ml (Catalog #1702)
- 1.5 ml CRISPR (Catalog #2206)
- 8.0 ml (Catalog #7015)
AltogenBiosystems是一家开发和制造用于生命科学研究,药物发现和开发的转染试剂盒的生物技术公司。转染试剂盒针对特定癌细胞系和原代细胞培养进行了优化,可将生物分子有效递送到靶组织中。通过先进的试剂配方和优化的转染方案实现体外(癌细胞系)和体内(动物组织靶向试剂、癌细胞系)递送货物分子,包括质粒DNA,各种类型的RNA(mRNA,siRNA,shRNA,microRNA),蛋白质和小分子研究。
Altogen生命科学公司致力于研发,生产和销售特定细胞系的转染试剂,用于细胞间生物分子的传递,并通过对转染试剂类型的设计将siRNA和质粒DNA有效地转入不同的细胞系和原代细胞内。Altogen公司开发的聚合物,脂质体,纳米粒子为基础的转染技术分别针对分子生物学,组合化学,和细胞生物学而分别应用。Altogen定制服务提供符合GLP要求定制研究服务,包括代稳定的细胞系,细胞银行和冷冻保存,焦磷酸测序,克隆,RNA干扰(RNAi)和基因沉默服务,发展分析,siRNA文库筛选,并转染服务。稳定的肿瘤细胞株和原代细胞的产生,可以是非常昂贵和费时。该公司的细胞培养科学家的细胞株的选择,无论是利息或shRNA表达载体的稳定表达的基因改造。标准的RNAi技术服务,包括设计与合成的siRNA的利益,验证siRNA的沉默效率,siRNA转染条件的优化,使高效的基因沉默细胞系或原代培养细胞的靶基因。转染培养细胞的瞬时或稳定的引入外源性分子和遗传物质(即RNA或DNA),通常是在生物实验室用来研究基因功能,基因表达的调节,生化映射,突变分析,和蛋白质的生产。科学家利用各种载体分子,这种分子,使质粒DNA(PDNA),信使RNA(mRNA),短干扰RNA(siRNA),小分子RNA(miRNA)的,并进入肿瘤细胞株和原代细胞的蛋白质的基因交付。不幸的是,无单提货的方法或转染试剂,可以适用于所有类型的细胞,细胞的细胞毒性和转染效率显着不同,取决于试剂,协议,并正在利用细胞类型。Altogen生物系统公司提供超过60种类型的细胞的预优化转染试剂盒。纳米粒子,脂质和聚合物基ALTOGEN®在体内转染试剂,使交付功能的RNA和DNA分子在体内。PEG脂质体在体内输送系统减少由于PEG修饰的先天免疫反应,并提供高效的siRNA转染的DNA,并在体内的蛋白质。由科学“杂志(2010年12月17日):PEG脂质体在体内转染试剂盒siRNA的特色Altogen生物系统功能的特定细胞系转染试剂盒
120+细胞转染试剂和活体组织靶向试剂盒制造商AltogenBiosystems是一家生物技术公司,开发和制造用于生命科学研究、药物发现和开发的转染试剂盒。Altogen®体内转染试剂可有效地将生物分子导入靶组织。细胞转染试剂盒针对特定的癌细胞系和原代细胞进行了优化。通过先进的试剂配方和优化的转染方案实现货物分子(DNA、RNA、蛋白质)的高效传递。AltogenBiosystems利用高分子化学、分子和细胞生物学的专业知识,开发了新的体内外给药技术。转染是将外源分子导入培养细胞中,常用于研究基因功能、基因表达调控、生化定位和蛋白质生产。不幸的是,由于细胞毒性和转染效率的差异很大,并且取决于所使用的试剂、方案和细胞类型,因此没有一种单一的传递方法或转染试剂可应用于所有类型的细胞。AltogenBiosystems为120多个癌细胞系和原代细胞类型提供优化的转染试剂盒和电穿孔产品。体内转染试剂可实现组织靶向给药。Altogen的转染试剂盒包括用于体外(癌细胞系)和体内(用于动物研究的组织靶向试剂)转染的转染增强剂试剂和转染复合物冷凝器。Altogen实验室提供符合GLP的实验室合同研究服务。我们的生物CRO服务包括异种移植物的疗效、IND应用的pharm/tox研究和安全性测试、分析开发(ELISA、IC-50、qPCR)、90多个异种移植物动物模型、RNAi和基因沉默服务。Altogen的细胞培养科学家通过在28天内培育出稳定的细胞系,将选择的细胞系转化为稳定表达感兴趣的基因。
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大家都是用什么方法挑选细胞单克隆的
单克隆:单克隆是指‘子代来源于一个母体.
细胞培养:细胞的大规模克隆.细胞培养,既包括微生物细胞的培养,细胞培养技术可以由一个细胞经过大量培养成为简单的单细胞或极少分化的多细胞.
单克隆一般常指动植物细胞的克隆,细胞培养一般是指动物、微生物等细胞的细胞克隆.
二者没有什么明显区别.单克隆在单克隆抗体制备中比较常见.其实是对骨髓瘤细胞的细胞培养.
目标蛋白对细胞有毒性,导致细胞死亡;
转染试剂以及DNA用量信息需要优化,否则对细胞具有伤害;
细胞贴壁转染之后没有正常换液。
建议:考虑对目标蛋白进行截短构建、尝试其他细胞系统;摸索转染试剂以及DNA用量信息,如果转染试剂毒性太大,可以考虑尝试义翘转染试剂sinofection;对转染后的细胞进行换液处理,如果细胞状态感觉不够理想,可以考虑添加一些血清来帮助细胞恢复健康。
以上所有分析、建议的前提是,细胞培养、无菌操作等等都没有问题。祝顺利,加油~
我转的是7901、7901/DDP两种细胞,前者7901细胞很容易就转上,并且转后,状态良好,可是7901/DDP一转就死,我用的是吉玛慢病毒,转24小时后换液,刚开始一两天,没有异常,但后来细胞慢慢就死了,并且不是漂浮的,很多是贴着壁死,像是瓦解了一样
这是未转时细胞的样子
这是细胞转后,死亡的样子
并且即使是有些细胞未死,细胞后来也变得很脏,感觉有很破碎的细胞碎片
本人实验小白,**园子里大神指点,急,实在不知道怎么回事
“转化”是指含外源基因的重组质粒(载体)将外源基因直接导入原核细胞(如细菌);
“转导”指通过重组病毒载体将外源基因导入真核细胞或原核细胞;
“转染”指重组质粒载体或游离核苷酸在脂质体等介导下进入真核细胞;
“感染”在基因转移实验中强调重组病毒载体入侵受体细胞的过程。
在使用这4 个名词时, 应仔细分析基因转移实验的四要素——转移物、载体、介导方法、受体细胞类型,而正确区 分载体和受体细胞类型是辨析的关键点。当载体是重组质粒时,如受体细胞是原核细胞应使 用“转化”,如受体细胞是真核细胞则使用“转染”;当载体是重组病毒时,如强调转移物进 入受体细胞应使用“转导”,如强调重组病毒载体进入受体细胞的过程则使用“感染”。
各位版友求助,
我使用Hek293构建转染模型,瞬转5质粒,用lipo2000做转染体系。
转染48h,发现荧光较强的细胞都在爬片的边缘,比例十分少。是因为我添加试剂的手法不对吗。
同时也发现加入转染体系后细胞状态特别差。想问一下用lipo2000时可以用无双抗的10%FBSDMEM吗。我转染前6h现在用的是纯DMEM,不含FBS。
请各位大神帮忙
转染分2种,一种是瞬时转染,即转染后让细胞表达目的蛋白后即提取蛋白,提一次蛋白,转染一次,这种方式一般不传代;
另一种转染为稳定转染,转染后加入一定选择压力进行筛选,没有转染的细胞不能存活,只留下转染的细胞,这种情况下可以筛选单个转染细胞,构建稳定表达某一特定蛋白或基因的细胞系。
其次要看下你选择单位的规模如何,做的比较好的,还是上海这边的,你可以看下基尔顿生物,原代细胞培养,动物造模,整体课题外包。