This invention relates to agents and conjugates that can be used to detect and isolate target components from complex mixtures such as nucleic acids from biological samples, cells from bodily fluids, and nascent proteins from translation reactions. Agents comprise a detectable moiety bound to a photoreactive moiety. Conjugates comprise agents coupled to substrates by covalent bounds which can be selectively cleaved with the administration of electromagnetic radiation. Targets substances labeled with detectable molecules can be easily identified and separated from a heterologous mixture of substances. Exposure of the conjugate to radiation releases the target in a functional form and completely unaltered. Using photocleavable molecular precursors as the conjugates, label can be incorporated into macromolecules, the nascent macromolecules isolated and the label completely removed. The invention also relates to targets isolated with these conjugates which may be useful as pharmaceutical agents or compositions that can be administered to humans and other mammals. Useful compositions include biological agents such as nucleic acids, proteins, lipids and cytokines. Conjugates can also be used to monitor the pathway and half-life of pharmaceutical composition in vivo and for diagnostic, therapeutic and prophylactic purposes. The invention also relates to kits comprised of agents and conjugates that can be used for the detection of diseases, disorders and nearly any individual substance in a complex background of substances.
本发明涉及用于检测和分离复杂混合物中的目标组分的试剂和结合物,例如来自
生物样品的核酸,来自体液的细胞和来自翻译反应的新生蛋白质。试剂包括与光反应性基团结合的可检测基团。结合物包括试剂通过共价键耦合到基质上,可以通过电磁辐射的给药选择性地断裂的结合物。标记有可检测分子的目标物质可以很容易地从异源混合物中识别和分离。将结合物暴露于辐射下会以功能形式完全不变地释放目标物质。使用光解分子前体作为结合物,可以将标记合并到大分子中,分离新生大分子并完全去除标记。本发明还涉及使用这些结合物分离的目标物质,可用作可用于人类和其他哺乳动物的药物剂或组合物。有用的组合物包括
生物制剂,如核酸,蛋白质,脂质和细胞因子。结合物还可用于监测体内药物组合物的途径和半衰期,并用于诊断,治疗和预防目的。本发明还涉及由试剂和结合物组成的试剂盒,可用于检测疾病,障碍和几乎任何复杂背景物质中的个体物质。