Biodynamic optical assay for embryo viability

Biodynamic optical assay for embryo viability
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胚胎活力的生物动力学光学测定

DOI:
10.1117/1.jbo.24.6.060502
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发表时间:
2019
影响因子:
3.5
通讯作者:
Nolte, David
Nolte, David
中科院分区:
医学3区
文献类型:
--
作者:
Li, Zhe;Ehmke, Natalie;Lorenzo, Ilka M.;Machaty, Zoltan;Nolte, David

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使用生物动力学显微镜(BDM)评价早期猪孤雌生殖胚胎的代谢活性,该显微镜使用低相干数字全息术对动态光散射进行成像。显微镜具有45度照明配置,可减少镜面背景,用于小型半透明样品的成像。离轴照明与相干选通成像兼容,因为体积光散射,其中相干平面在三维组织目标中以照明角的一半倾斜。BDM用于使用多普勒波动光谱分析具有正常和具有抑制的线粒体三磷酸腺苷(ATP)产生的猪单性生殖体的活力。通过常规生物发光测定法验证了单性生殖体中指示发育潜力的ATP浓度。生物动力学分类达到80%   准确性相关的样品ATP处理,提供一个快速,无标记的替代测量,以取代侵入性代谢测定作为辅助生殖技术设置中的早期胚胎质量评估的候选。
Early stage porcine parthenogenetic embryos were evaluated for metabolic activity using a biodynamic microscope (BDM) that images dynamic light scattering using low-coherence digital holography. The microscope has a 45-deg illumination configuration that reduces specular background for the imaging of small translucent samples. The off-axis illumination is compatible with coherence-gated imaging because of volumetric light scattering in which the coherence plane is tilted at half the illumination angle in a three-dimensional tissue target. The BDM was used to profile the viability of porcine parthenotes with normal and with inhibited mitochondrial adenosine triphosphate (ATP) production using Doppler fluctuation spectroscopy. The ATP concentrations in the parthenotes, which are indicative of developmental potential, were validated by a conventional bioluminescence assay. Biodynamic classifications achieved ∼80  %   accuracy correlating sample ATP treatment, providing a quick, label-free surrogate measurement to replace invasive metabolic assays as a candidate for evaluating quality of early embryos in the assisted reproductive technology setting.
用于三维组织药物筛选的组织动力学光谱
DOI: --
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