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    • 3. 发明申请
    • METHOD AND APPARATUS FOR DISCRIMINATING X AND Y SPERMS BASED UPON RAMAN SPECTROSCOPY
    • 基于拉曼光谱分析X和Y轴的方法和装置
    • WO2015075698A1
    • 2015-05-28
    • PCT/IB2014/066319
    • 2014-11-25
    • CONSIGLIO NAZIONALE DELLE RICERCHE
    • DE LUCA, Anna ChiaraBALDUZZI, DonatellaCOPPOLA, GiuseppeGALLI, AndreaSIRLETO, LuigiPUGLISI, RobertoFERRARA, Maria AntoniettaFERRARO, Pietro
    • G01N15/14C12N5/071G21K1/00G01N21/65G02B21/32
    • G01N15/1459C12N5/0612G01N15/1484G01N21/65G01N2015/149G02B21/32
    • The invention relates to a method based upon the use of Raman spectroscopy to face the problem of the biochemical analysis and of the differentiation of the X sperm and Y sperm in the animal species, in particular bovine species, with approaches which make possible the subsequent use in fecundation techniques. A method addressed to the resolution of this problem is based upon the separation between X sperm and Y sperm before insemination. An apparatus is also described implementing such method which allows to distinguish and characterize the difference between X sperm and Y sperm by acquiring and analyzing Raman spectra noninvasively and in a not destructive way. By means of a statistical approach, such as for example the analysis of the main components and the linear discriminating analysis, the spectroscopic difference between X sperm and Y sperm is evaluated, processed and used to separate the two types of cells. The invention also relates to the development of a cytofluorimeter combining the Raman microscope with a system for trapping optically the sperms and a microfluidic chamber. More precisely, the optical trapping system, equipped with an objective with high numerical aperture, is used to immobilize the cells and, the same objective is used to excite and gather Raman spectra. At last, the microfluidic chamber is used to make the sample to flow, with the final purpose of providing a quick, precise and not invasive separation of X sperm and Y sperm, (figure 5A).
    • 本发明涉及一种基于使用拉曼光谱法来面对动物物种,特别是牛物种中的X精子和Y精子的生物化学分析和分化问题的方法,所述方法使随后的使用成为可能 在fecundation技术。 解决这个问题的方法是基于X精子和Y精子在授精前的分离。 还描述了一种实现这种方法的装置,其通过以非侵入性和非破坏性的方式获取和分析拉曼光谱来区分和表征X精子和Y精子之间的差异。 通过统计方法,例如主要成分的分析和线性鉴别分析,X精子与Y精子之间的光谱差异被评估,处理并用于分离两种细胞。 本发明还涉及将拉曼显微镜与用于光学捕获精子和微流体室的系统结合的细胞荧光计的开发。 更准确地说,配备有具有高数值孔径的物镜的光学捕获系统用于固定电池,并且使用相同的目的来激发和聚集拉曼光谱。 最后,微流体室用于使样品流动,其最终目的是提供X精子和Y精子的快速,精确和不侵入的分离(图5A)。