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Method Article
本文介绍的方法microdissect与视网膜色素上皮细胞附着,从一到三天受精胚胎斑马鱼视网膜。
斑马鱼眼睛发育的模式,因为其快速流行的动物进行研究
第1部分:显微切割前的筹备工作
第2部分:夹层-去除脑部和眼睛接触1
第3A:视网膜清扫1
第3B:视网膜色素上皮附加视网膜剥离3
第4部分:组织的RNA工作的样品收集
代表性的成果
图1(一)横向(一)52 HPF前清扫了斑马鱼幼虫头部背面观。 (A“),相应的幼虫头部的组织切片(A)及(一)(二)横向和(B'),在54 HPF解剖视网膜背视图。视网膜表面是完整的两个横向背的意见(二)相应的病理解剖视网膜节(b)及(B“)。视网膜和视网膜层压结构完整。特别是细胞外基质之间的感光层和RPE(一“,箭头),保存完好,在解剖视网膜(B”箭头)。 (三)横向(C“)52 HPF的视网膜色素上皮附着在视网膜的一个解剖内侧。 RPE层是完整的和连续,这也是由病理解剖组织的第(三)表示。“C”的白色区域是视神经(箭头),组织学,组织标本在4%,收集和固定多聚甲醛塑料包埋和切片对这些样品进行了描述。比例尺= 50微米。
斑马鱼眼组织显微切割可以有效地获得完整的视网膜和视网膜色素上皮附加视网膜。这大大助攻表达的研究,涉及到一个特定的眼组织(即视网膜色素上皮)。事实上,我们已经成功地利用这些程序获得整个视网膜和视网膜色素上皮 3 RNA的表达谱。这些配置文件的实用工具,是我们最近的途径和基因家族在视网膜分化突变2扰动识别,大力支持。在视网膜的解剖程序的最关键步骤?...
这项工作是由一个在美国普渡大学生物科学系的启动资金支持。
Name | Company | Catalog Number | Comments |
Cordless pestle motor | VWR international | 47747-370 | |
DC power supply | Lascar | PSU130 | Any DC supply would work. The specific voltage of a different machine will need further optimization. |
Disposable pestle & microtube, 1.5 mL (DNase, RNase and pyrogen-free) | VWR international | 47747-366 | These are used for tissue collection in TRIzol for expression analysis. |
Dumont #5 forceps, Tips: 0.05 x 0.01mm, Inox | World Precision Instruments, Inc. | 500341 | Fine tip dimension is desirable but is not inflexible, as one may need to sharpen the tip from time to time. |
Dumont #5SF forceps, Tips: 0.025 x 0.005mm, Inox | Fine Science Tools | 11252-00 | Fine tip dimension is desirable but is not inflexible, as one may need to sharpen the tip from time to time. |
Falcon polystyrene culture plates, 60 X 15 mm | BD Biosciences | 351007 | These plates are used as dissection plates. |
Olympus SZX16 Stereomicroscope | Olympus Corporation | SZX16 | Any stereomicroscope would work. We used Leica stereomicroscope in previous studies1-3 without any issues. We also use the 1X objective exclusively for the dissection even though we have a 2X objective installed. |
Sharpening stone | Fine Science Tools | 29008-01 | Use this to sharpen the tip of the forceps if necessary |
Thermo plate | Tokai Hit | MATS-U55SZX2B | This is used to maintain the temperature of the tissue throughout dissection and minimize the influence of temperature fluctuation on gene expression. We also put the whole microscope in an environmentally controlled room at 28°C during dissection in previous studies1-3 with good success. |
Trizol, 100 mL | Invitrogen | 15596-026 | |
tungsten wire, 0.015 inch diameter | World Precision Instruments, Inc. | TGW1510 | |
Wooden Applicator | Puritan | 807 | This is used for holding the chemically-etched tungsten needle. |
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