hERG-HEK293 稳定表达细胞系 / BioVector® hERG-HEK293 hERG1a/1b Stable Expression Cell Line
- 价 格:¥998950
- 货 号:BioVector® hERG-HEK293
- 产 地:北京
- BioVector NTCC典型培养物保藏中心
- 联系人:Dr.Xu, Biovector NTCC Inc.
电话:400-800-2947 工作微信:1843439339 (QQ同号)
邮件:Biovector@163.com
手机:18901268599
地址:北京
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BioVector® hERG-HEK293 稳定表达细胞系 / BioVector® hERG-HEK293 Stable Expression Cell Line
通用定义 / General Definition:
BioVector® hERG-HEK293 是一种稳定转染了人 hERG (human Ether-à-go-go-Related Gene) 钾离子通道基因的 HEK293(人胚胎肾细胞) 衍生细胞系。hERG 通道负责心肌动作电位复极化的关键电流($I_{Kr}$)。该细胞系是制药行业进行**药物安全性评价(心脏毒性筛查)**的“金标准”工具。几乎所有新药在临床前阶段都必须通过 hERG 极化实验,以评估其是否会引起 QT 间期延长及潜在的致命性心律失常(如尖端扭转型室性心动过速)。
BioVector® hERG-HEK293 is a HEK293 (Human Embryonic Kidney) derivative cell line stably transfected with the human hERG (human Ether-à-go-go-Related Gene) potassium channel. The hERG channel is responsible for the rapid delayed rectifier potassium current ($I_{Kr}$) essential for cardiac action potential repolarization. This cell line is the "gold standard" tool in the pharmaceutical industry for drug safety assessment (cardiotoxicity screening). Nearly all drug candidates must undergo hERG testing during preclinical stages to evaluate their potential to cause QT interval prolongation and life-threatening arrhythmias, such as Torsade de Pointes.
BioVector® hERG-HEK293 技术说明书 (Technical Datasheet)
中文版说明书 (Chinese Datasheet)
1. 产品基本信息
产品名称: BioVector® hERG-HEK293 稳定表达细胞系
母本细胞: HEK293
靶点基因: 人 KCNH2 (hERG)
生长特性: 贴壁生长
细胞形态: 上皮样,呈多角形
2. 培养条件
基础培养基: BioVector® DMEM 培养基(高糖)。
血清添加: 10% BioVector® 优质胎牛血清 (FBS)。
筛选抗生素: 含有适量的 G418 或 Hygromycin B(取决于载体构建),以维持 hERG 通道的稳定表达。
培养环境: 37 摄氏度,5% $CO_2$
传代比例: 1:3 至 1:6;电生理实验建议在细胞处于对数生长期时进行。
3. 细胞应用
电生理筛查: 利用手动或自动膜片钳(Patch Clamp)技术检测候选药物对 hERG 电流的抑制作用($IC_{50}$ 值)。
心脏安全性评价: 遵循 GLP 规范,评估非心脏病药物的潜在致心律失常风险。
通道功能研究: 研究 hERG 通道的门控机制、动力学及辅助亚基的影响。
4. 注意事项
电流强度监测: 随代数增加,通道表达水平可能下降。BioVector® 建议定期通过膜片钳检测全细胞电流密度(通常要求应大于 500 pA)。
消化处理: 膜片钳实验需使用温和的消化液(如低浓度 Trypsin 或 Accutase),以防止对膜蛋白受体的机械性损伤。
English Datasheet
1. General Product Information
Product Name: BioVector® hERG-HEK293 Stable Expression Cell Line
Parental Line: HEK293
Target Gene: Human KCNH2 (hERG)
Growth Properties: Adherent
Morphology: Epithelial-like, polygonal.
2. Culture Conditions
Basal Medium: BioVector® DMEM (High Glucose).
Serum Supplement: 10% BioVector® Fetal Bovine Serum (FBS).
Selection Marker: Maintain with G418 or Hygromycin B (dependent on the specific construct) to ensure stable hERG channel expression.
Incubation: 37 degrees Celsius, 5% $CO_2$.
Subculturing: 1:3 to 1:6 ratio; cells should be in the logarithmic growth phase for electrophysiological recording.
3. Applications
Electrophysiological Screening: Utilizing manual or automated Patch Clamp techniques to determine $IC_{50}$ values for drug-induced inhibition of hERG currents.
Cardiac Safety Pharmacology: Assessing pro-arrhythmic risks of non-cardiovascular drugs in compliance with GLP guidelines (e.g., ICH S7B).
Channel Biophysics: Studying gating mechanisms, kinetics, and the influence of auxiliary subunits on hERG function.
4. Key Usage Notes
Current Density Monitoring: Channel expression may diminish over long-term culture. BioVector® recommends periodic verification of whole-cell current amplitude (typically $> 500$ pA is required for high-quality data).
Gentle Dissociation: For patch clamp assays, use mild dissociation reagents (e.g., Accutase) to preserve membrane integrity and channel protein functionality.
注意 / Note: BioVector® hERG-HEK293 细胞在传代至 20 代后,电生理性能可能发生漂移。为确保数据精确度,建议及时从冷冻管复苏低代数细胞。
The electrophysiological performance of BioVector® hERG-HEK293 may drift after 20 passages. To ensure data accuracy, BioVector® recommends thawing a new vial of low-passage cells periodically.


BioVector NTCC质粒载体菌株细胞蛋白抗体基因保藏中心
E-mail: BioVector@163.com
http://www.biovector.net
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