申请人:Russell David
公开号:US20090230322A1
公开(公告)日:2009-09-17
A method for the fluorescent detection of a substance, the method comprising providing particles comprising a metal or a metal oxide core, wherein one or more optionally fluorescently tagged antibodies or human specific peptide nucleic acid (PNA) oligomers for binding to a substance is/are bound, directly or indirectly, to the surface of the metal or metal oxide; contacting a substrate, which may or may not have the substance on its surface, with the particles for a time sufficient to allow the antibody/PNA oligomer to bind with the substance; removing those particles which have not bound to the substrate; if the antibodies or PNA oligomers are not fluorescently tagged, contacting the substrate with one or more fluorophores that selectively bind with the antibody and/or substance, then optionally washing the substrate to remove unbound fluorophores; and illuminating the substrate with appropriate radiation to show the fluorophores on the substrate.
一种用于荧光检测物质的方法,该方法包括提供含有金属或金属氧化核的颗粒,其中一种或多种可选择性地荧光标记的抗体或人特异性肽核酸(PNA)寡聚体,用于结合到物质上,直接或间接地结合到金属或金属氧化物的表面;将可能在其表面具有或不具有该物质的基质与这些颗粒接触一段时间,以充分允许抗体/PNA寡聚体与该物质结合;移除那些未与基质结合的颗粒;如果抗体或PNA寡聚体未被荧光标记,则将基质与一种或多种能特异性结合抗体和/或物质的荧光剂接触,然后可选择地清洗基质以去除未结合的荧光剂;并用适当的辐射照射基质以显示基质上的荧光剂。