pLenti-CMV-IRS4-Myc/His-Puro 慢病毒表达质粒 / BioVector® pLenti-CMV-IRS4-Myc/His-Puro Lentiviral Expression Plasmid
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- 货 号:BioVector® pLenti-CMV-IRS4-Myc/His-Puro
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BioVector® pLenti-CMV-IRS4-Myc/His-Puro 慢病毒表达质粒 / BioVector® pLenti-CMV-IRS4-Myc/His-Puro Lentiviral Expression Plasmid
通用定义 / General Definition:BioVector® pLenti-CMV-IRS4-Myc/His-Puro 是一种基于第三代慢病毒系统的哺乳动物表达载体,专门设计用于在靶细胞中实现 IRS4 (胰岛素受体底物 4) 蛋白的高效整合与稳定表达。该质粒利用强力的 CMV 启动子 驱动 IRS4 的转录,并在其 C 端融合了 Myc 和 His 双标签,方便通过免疫印迹 (WB)、免疫共沉淀 (Co-IP) 或亲和层析进行蛋白检测与纯化。载体同时携带 Puro (嘌呤霉素) 抗性基因,允许研究人员筛选建立稳定表达 IRS4 的细胞株。IRS4 是胰岛素和细胞因子信号转导中的重要接头蛋白,常在多种癌症和代谢研究中被深入探讨。
BioVector® pLenti-CMV-IRS4-Myc/His-Puro is a third-generation lentiviral expression vector designed for the stable integration and high-level expression of IRS4 (Insulin Receptor Substrate 4) in mammalian cells. The vector utilizes a robust CMV promoter to drive IRS4 transcription and features C-terminal Myc and His tags to facilitate protein detection, pull-down assays, or purification. Additionally, it contains a Puro (Puromycin) resistance marker for the selection of stable cell lines. IRS4 acts as a critical adaptor protein in insulin and cytokine signaling pathways and is frequently investigated in oncogenesis and metabolic disorder research.
BioVector® pLenti-CMV-IRS4-Myc/His-Puro 技术说明书 (Technical Datasheet)
中文版说明书 (Chinese Datasheet)
1. 质粒基本信息
载体类型: 慢病毒表达载体 (Lentiviral Expression Vector)
启动子: CMV (Cytomegalovirus) 启动子
插入片段: 人或小鼠 IRS4 (Insulin Receptor Substrate 4)
融合标签: C-terminal Myc-His 双标签
筛选标记: Puromycin (嘌呤霉素)
克隆位点: 通常位于 MCS 多克隆位点
细菌抗性: 氨苄青霉素 (Ampicillin, 100 mg/L)
2. 核心生物学功能
稳定转导: 慢病毒系统可高效感染分裂和非分裂细胞,并将 IRS4 基因组整合至宿主染色体。
信号通路研究: 探索 IRS4 对 PI3K/Akt 和 MAPK 信号通路的调节作用。
蛋白互作: 利用 Myc/His 标签通过质谱或 Co-IP 鉴定 IRS4 的下游结合伙伴。
3. 实验应用方案
病毒包装: 需配合包装系统(如 pMD2.G 和 psPAX2)在 293T 细胞中进行病毒生产。
稳转株建立: 感染靶细胞后,通过梯度浓度的嘌呤霉素进行抗性筛选。
功能验证: 通过 Western Blot 验证 IRS4-Myc/His 的表达情况。
4. 注意事项
生物安全: 包装后的病毒颗粒必须在生物安全二级 (BSL-2) 环境下操作。
片段长度: 由于 IRS4 编码区较长,请确保病毒包装效率,必要时进行病毒浓缩。
English Datasheet
1. Basic Plasmid Information
Vector Type: Lentiviral Expression Vector
Promoter: CMV (Cytomegalovirus)
Insert: Human or Mouse IRS4 (Insulin Receptor Substrate 4)
Fusion Tags: C-terminal Myc-His dual tags
Selection Marker: Puromycin (Puro)
Bacterial Selection: Ampicillin (100 mg/L)
Replicon: pUC ori
2. Key Biological Functions
Stable Expression: Capable of mediating long-term stable expression in a wide range of mammalian cell types via genomic integration.
Signaling Analysis: Serving as a tool to investigate the impact of IRS4 over-expression on insulin signaling and cell proliferation.
Tag Utility: The Myc/His tandem tags enable high-specificity detection using anti-Myc/His antibodies and simplified protein purification via IMAC (Immobilized Metal Affinity Chromatography).
3. Applications
Lentiviral Production: Standard transfection into 293T cells using a 3-plasmid packaging system.
Stable Line Generation: Selection of transduced cells using Puromycin following viral infection.
Pathway Profiling: Analyzing phosphorylation patterns of Akt or ERK in response to IRS4 expression.
4. Key Usage Notes
Biosafety: Handle as BSL-2 material once packaged into viral particles.
Sequence Integrity: BioVector® recommends verifying the IRS4-Myc-His junction via Sanger sequencing to ensure the reading frame is correct.
注意 / Note: 质粒应储存在 -20 摄氏度。在使用 CMV 启动子时,需注意某些特定的细胞系(如干细胞)可能会发生启动子沉默现象。Store at -20°C. When using the CMV promoter, be aware that promoter silencing can occur in certain cell types, such as stem cells or primary neurons.
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