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Transcreener cGAMP cGAS分析法直接测量由环状GMP-AMP合酶(cGAS,C6orf150、2'3'-cGAMP合酶)产生的环状GMP-AMP (cGAMP)。通过测量cGAMP的产量,研究人员可以有效地确定 cGAS酶的活性。该测定法提供了一个强大的工具,可以筛选整个化合物库中的cGAS调节剂,以 帮助找到针对cGAS-STING途径的新疗法。
真核细胞胞质溶胶中DNA的存在是感染或细胞损伤的指示,并且在I型干扰素(IFN)诱导的驱动下引发强烈的免疫反应。cGAS是细胞质中双链DNA的非常灵敏的传感器。DNA的结合激活了该酶,从而产生了*的环状二核苷酸第二信使cGAMP,它充当STING(干扰素基因刺激剂)受体的激动剂,从而导致I型干扰素应答。

Transcreener cGAMP FP分析-了解更多信息




Transcreener cGAS分析法采用易于HTS使用,混合阅读的格式。运行您的酶反应,添加 Transcreener试剂,然后阅读板。该测定与96、384和1536孔格式兼容。

当使用标准曲线将原始数据转换为cGAMP时,该测定法显示线性。cGAS被双链DNA激活,并需要ATP和GTP底物来生产cGAMP。


Transcreener cGAS分析法旨在以高通量格式筛选化合物库。还可以使用该测定法进行随访SAR,从而轻松确定抑制剂的效价。


该测定法准确地证明了cGAS酶的特征。在GTP和ATP均存在的情况下,双链DNA激活了产生cGAMP的酶。一个45个碱基对的ISD(干扰素刺激性DNA)和一个60个碱基对的HSV(单纯疱疹病毒)DNA均可激活该酶。该测定法对cGAMP具有很高的亲和力,即使存在其他核苷酸也可以检测。


该测定显示24小时以上的信号稳定性。这样的印版稳定性对于大型的高通量筛选至关重要,由于大量样品需要大量时间才能完成。
标准曲线包括ATP,GTP,dsDNA和cGAMP的滴定。在每个时间点读取相同的板。

有兴趣推进您的程序,但不想内部进行分析吗?我们的科学家可以提供帮助!BellBrook的科学家将利用其丰富的生物化学和酶学专业知识与您合作,并加快您的cGAS计划。

| Component | Notes |
|---|---|
| cGAMP Antibody | Antibody specific to the dinucleotide cGAMP. |
| Tracer | When displaced, changes in fluorescence can be read in an FP or TR-FRET depending on the assay format. |
| Stop & Detect Buffer B, 10X | A buffer that can be used to stop enzyme reactions for an endpoint readout. |
| ATP | ATP can be used for the enzyme reaction and standard curve. |
| GTP | GTP can be used for the enzyme reaction and standard curve. |
| cGAMP | cGAMP can be used to create a standard curve. |
| Interferon Stimulatory DNA | ISD is a 45-bp oligomer used to activate the cGAS enzyme. |
| Component | Notes |
|---|---|
| cGAS Enzyme | You can purchase active cGAS enzyme directly through BellBrook Labs. |
| Enzyme Buffer | We routinely use enzyme buffer containing 20 mM TRIS (pH 7.5), 5 mM MgCl2, 0.01% Brij-35, and 1% DMSO (test compound solvent). Use the buffer that is a best fit for your enzyme conditions |
| Assay Plates | You can purchase assay plates directly through BellBrook Labs.
FP - An entirely black plate with a non-binding surface is required. We suggest Corning 384-well plates, Cat. #4514. TR-FRET - An entirely white plate with a non-binding surface is required. We suggest Corning 384-well plates Cat. #4513 |
| Cat. No. | Product Description | Price |
|---|---|---|
| 3024-1K | Transcreener cGAMP cGAS FP Assay (1,000 Assay, 384 Well) | $798.00 |
| 3024-10K | Transcreener cGAMP cGAS FP Assay (10,000 Assay, 384 Well) | $4,615.00 |
| 3024-100K | Transcreener cGAMP cGAS FP Assay (10 X 10,000 Assay, 384 Well) | $23,075.00 |
| 3025-1K | Transcreener cGAMP cGAS TR-FRET Assay (1,000 Assay, 384 Well) | $875.00 |
| 3025-10K | Transcreener cGAMP cGAS TR-FRET Assay (10,000 Assay, 384 Well) | $4,989.00 |
| 3025-100K | Transcreener cGAMP cGAS TR-FRET Assay (10 X 10,000 Assay, 384 Well) | $24,950.00 |
* For custom or bulk orders (over 100 μg) please contact us (info@bellbrooklabs.com) for a quote.
| Cat. No. | Product Description | Price |
|---|---|---|
| 2227 | Recombinant cGAS Enzyme, Active, Human, Full-Length, 10 µg | $399.00 |
| 2228 | Recombinant cGAS Enzyme, Active, Human, Full-Length, 100 µg | $1,398.00 |
* Includes enough enzyme for respective wells when used at 1.75 μg/mL (30 nM)
| Cat. No. | Product Description | Price |
|---|---|---|
| 3024-1K-B | Includes Transcreener cGAS FP Assay 1K Kit and 20 µg Human cGAS Enzyme | $1,275.00 |
| 3024-10K-B | Includes Transcreener cGAS FP Assay 10K Kit and 200 µg Human cGAS Enzyme | $6,670.00 |
| 3025-1K-B | Includes Transcreener cGAS TR-FRET Assay 1K Kit and 20 µg Human cGAS Enzyme | $1,345.00 |
| 3025-10K-B | Includes Transcreener cGAS TR-FRET Assay 10K Kit and 200 µg Human cGAS Enzyme | $6,995.00 |
| Cat. No. | Product Description | Price |
|---|---|---|
| 2233 | Corning 96-Well Black Assay Plates (#3686), 3-Pack (200+ Assays) | $40.00 |
| 2229 | Corning 384-Well Black Assay Plates (#4514), 3-Pack (1,000+ Assays) | $45.00 |
| 2230 | Corning 384-Well Black Assay Plates (#4514), 30-Pack (10,000+ Assays) | $400.00 |
| Cat. No. | Product Description | Price |
|---|---|---|
| 2234 | Corning 96-Well White Assay Plates (#3642), 3-Pack (200+ Assays) | $40.00 |
| 2231 | Corning 384-Well White Assay Plates (#4513), 3-Pack (1,000+ Assays) | $50.00 |
| 2232 | Corning 384-Well White Assay Plates (#4513), 30-Pack (10,000+ Assays) | $450.00 |

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