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1Department of Physics, Texas A&M University (TAMU), 2Department of Biomedical Engineering, Texas A&M University (TAMU)
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Noel, J., Teizer, W., Hwang, W. Antifouling Self-assembled Monolayers on Microelectrodes for Patterning Biomolecules. J. Vis. Exp. (30), e1390, doi:10.3791/1390 (2009).
试剂的制备
准备管道的缓冲液(80毫米的管道,1MM氯化镁2,为1mM EGTA,用KOH调节pH至6.8)。分装和储存葡萄糖氧化酶,过氧化氢 酶和葡萄糖在-70 ° C和紫杉醇在-20 ° C根据现有的协议。1,2分装和存储微管蛋白在-70 ° C,根据供应商包括的指示。
图案的金微电极使用光刻
准备的SAM
编造的counterelectrode
在同一沉积室设置用于微电极沉积,沉积1 nm的铬,4纳米金上一个22 × 50毫米的1号或0号玻璃盖玻片counterelectrode。 counterelectrode应接近透明的浅灰色或粉红色的色调。商店在培养皿counterelectrode涂层朝上,以保持清洁。
到MTS的聚合微管蛋白
图案MT的使用电泳
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MTS的迁移是很容易的可视化使用,因为它们的亮度和低背景荧光的荧光显微镜。方法一般适用于生物分子的图案,因为它仅需要诱导的生物分子进行适当的调整缓冲液pH值的净电荷。电渗是避免在此设置,因为有没有收取的表面,如毛细管电泳中使用的硅墙壁。
这种方法的若干修改是可能的。密封流室的两端是至关重要的观察,因为从开完的蒸发导致散装流体流动和不良吨迁移的可逆性。氧化硅晶片光刻图案前将阻止通过基板的传导,允许多个电极,同时使用的独立潜力。
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我们承认梅利莎Grunlan SAM的形成有益的讨论。这项研究是支持的,一部分由罗伯特A ·韦尔奇基金会(1585年)。
| Name | Company | Catalog Number | Comments |
| 2-[methoxypoly-(ethyleneoxy)propyl]-trimethoxysilane (PEG-silane) | Gelest Inc. | SIM6492.7 | 6-9 PEG units;molecular weight 450-600 g mol-1 |
| 2-mercaptoethanol | Sigma-Aldrich | M7522 | |
| Acetone | EMD Millipore | AX0120-8 | ACS grade |
| Catalase | Calbiochem | 219001-5MU | |
| Chlorobenzene | EMD Millipore | MK441908 | ACS grade |
| Ethylene glycol-bis(2-aminoethylether)-N,N,N’,N’-tetraacetic acid (EGTA) | Calbiochem | 324626 | |
| Glucose | EMD Millipore | DX0145-1 | |
| Glucose oxidase | MP Biomedicals | 100330 | |
| Guanosine-5’-[(α,Β)-methyleno]triphosphate, Sodium salt (GMPCPP) | Jena Biosciences, GmbH | NU-405s | |
| Guanosine-5’-triphosphate | Sigma-Aldrich | G8752 | |
| Isopropanol | EMD Millipore | PX1835-5 | ACS grade |
| Methyl isobutyl ketone (MIBK) | Fisher Scientific | AC12739-0010 | |
| Paclitaxel (taxol) | Calbiochem | 580555 | |
| Piperazine-N,N’’-bis(2-ethanesulfonic acid) (PIPES) | Sigma-Aldrich | P1851 | |
| Polymethylmethacrylate (PMMA) | Brewer Science, Inc. | 950K | molecular weight 950K |
| Rhodamine tubulin | Cytoskeleton, Inc. | T331M | from bovine brain 99% pure, lyophilized |
| Toluene | EMD Millipore | TX0735-5 | ACS grade |
| Tubulin | Cytoskeleton, Inc. | T238 | from bovine brain 99% pure, lyophilized |
No. 1 borosilicate glass coverslips (22 X 50 mm) were purchased from VWR. Polished electronic grade p-type <111> silicon wafers were purchased from Addison Engineering, Inc. High-purity silver paint was obtained from Structure Probe, Inc. (Catalog # 5001 AB). Insulated fine gauge copper magnet wire (~ 0.08 mm (0.003Â) diameter) can be obtained from electronic supply companies. |
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