传统荧光显微镜受到光学衍射极限的影响，最高的分辨率为200 nm，因此很难观察细胞中的超微结构。LiveCodim是一款模块化超分辨共聚焦显微系统，能够适配绝大多数的倒置荧光显微镜，将现有的倒置显微镜升级成为具备宽场、共聚焦、超分辨三大模式的成像系统。LiveCodim通过独特的锥形衍射显微镜—— 一种强大的波束成形器，能够直接提供分辨率高达120 nm的实时活细胞超分辨共聚焦成像，同时无需对样品进行任何额外操作，结合其低光毒性，以及方便快捷的操作系统等优势，是拍摄荧光成像的不二之选。
产品优势
· 超高性价比：模块化超分辨，节省成本，兼容绝大多数倒置显微镜
· xy轴超高分辨率：<120 nm
· z轴深度成像：具备z-stack成像能力，最高成像深度50 μm
· 活细胞成像：低光毒性和光漂白性，适合活细胞成像
· 制样简单：样品无需特殊处理，无需特殊染料
· 全自动软件：全自动调节各种参数，简单易上手
主要参数
· xy轴分辨率：< 120 nm
· z轴分辨率：< 500 nm
· z轴成像深度：50 μm
· 成像视野：共聚焦模式下80 μm * 80 μm，超分辨模式下： 50 μm * 50 μm
· 成像模式：宽场、共聚焦、LiveCodim超分辨
· 四色成像通道：405 nm, 488 nm, 561 nm, 640 nm (根据需求可增加)
测试数据
1. MDCK细胞中线粒体的动态变化
2. Hela胞的微管宽场，共聚焦，LiveCodim超分辨成像
3. 细胞分裂中期的COS-7细胞3D多色超分辨成像
4. 植物细胞成像：观测铃兰草的根茎
5. 天然免疫分子TRIM5α作用机制研究
天然免疫分子TRIM5α蛋白是人类基因中决定疾病的易感性和发病速度的重要因素，其抗病毒活性通常通过小泛素相关修饰物(SUMO)调节，但是具体的作用机制仍有待进一步研究。LiveCodim超分辨图像揭示了TRIM5α主要分布在肌小管的核膜上，同时与存在于核孔的细胞质丝上的RanGTPase激活蛋白RanGAP1有明显的共定位现象，和主要定位于核篮上的蛋白Nup153无明显共定』位，说明TRIM5α主要定位于这类细胞的胞质面。
部分发表文章
[1] Fernandez, Juliette, et al. "Transportin-1 binds to the HIV-1 capsid via a nuclear localization signal and triggers uncoating." Nature microbiology 4.11 (2019): 1840-1850.
[2] Vargas, Jessica Y., et al. "The Wnt/Ca2+ pathway is involved in interneuronal communication mediated by tunneling nanotubes." The EMBO journal 38.23 (2019): e101230.
[3] Maarifi, Ghizlane, et al. "RanBP2 regulates the anti-retroviral activity of TRIM5α by SUMOylation at a predicted phosphorylated SUMOylation motif." Communications biology 1.1 (2018): 1-11.
[4] Garita-Hernandez, Marcela, et al. "Optogenetic light sensors in human retinal organoids." Frontiers in neuroscience 12 (2018): 789.
[5] Getz, Angela M., et al. "Tumor suppressor menin is required for subunit-specific nAChR α5 transcription and nAChR-dependent presynaptic facilitation in cultured mouse hippocampal neurons." Scientific reports 7.1 (2017): 1-16.
[6] Portilho, Débora M., Roger Persson, and Nathalie Arhel. "Role of non-motile microtubule-associated proteins in virus trafficking." Biomolecular concepts 7.5-6 (2016): 283-292.
[7] Pagliuso, Alessandro, et al. "A role for septin 2 in Drp1‐mediated mitochondrial fission." EMBO reports 17.6 (2016): 858-873.
[8] Fallet, Clement, and Gabriel Y. Sirat. "Achromatization of conical diffraction: application to the generation of a polychromatic optical vortex." Optics letters 41.4 (2016): 769-772.
[9] Fallet, Clement, et al. "Accurate axial localization by conical diffraction beam shaping generating a dark-helix PSF." Single Molecule Spectroscopy and Superresolution Imaging IX. Vol. 9714. International Society for Optics and Photonics, 2016.
[10] Fallet, Clement, Arvid Lindberg, and Gabriel Y. Sirat. "Generating 3D depletion distribution in an achromatic single-channel monolithic system." Single Molecule Spectroscopy and Superresolution Imaging IX. Vol. 9714. International Society for Optics and Photonics, 2016.
[11] Fallet, Clément, et al. "A new method to achieve tens of nm axial super-localization based on conical diffraction PSF shaping." Single Molecule Spectroscopy and Superresolution Imaging VIII. Vol. 9331. International Society for Optics and Photonics, 2015.
[12] Caron, Julien, et al. "Conical diffraction illumination opens the way for low phototoxicity super-resolution imaging." Cell adhesion & migration 8.5 (2014): 430-439.
[13] Fallet, Clément, et al. "Conical diffraction as a versatile building block to implement new imaging modalities for superresolution in fluorescence microscopy." Nanoimaging and Nanospectroscopy II. Vol. 9169. International Society for Optics and Photonics, 2014.
[14] Rosset, Sybille, Clement Fallet, and Gabriel Y. Sirat. "Focusing by a high numerical aperture lens of distributions generated by conical diffraction." Optics letters 39.23 (2014): 6569-6572.
用户单位
法国巴斯德研究所 | 蒙彼利埃大学 |
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