3D-exoquant method for the analysis of surface molecules and quantification of tissue-specific exosomes in biological fluids
申请人:The Regents of the University of California
公开号:US11243215B2
公开(公告)日:2022-02-08
In various embodiments methods are provided for identifying and/or quantifying one or more antigens of interest (biomarkers) on the surface of cell- or tissue-specific exosomes. In an illustrative embodiments the methods comprise: i) incubating a population of exosomes with one or more tissue-specific antibodies that bind an antigen specific to a tissue or cell type of interest that produces exosomes, where the tissue specific antibodies are attached to acceptor bead or magnetic beads so the antibodies bind exosomes displaying the antigen; ii) obtaining a purified population of exosomes bound by the tissue specific antibodies with and/or without photocleavable linker based technology; iii) incubating a test subset of the isolated tissue-specific exosomes with acceptor beads attached to test antibodies that bind an antigen of interest thereby binding exosomes that display the antigen of interest and a control subset with negative control acceptor beads; v) incubating the test subset of isolated exosomes and the control subset of exosomes with a donor-bearing antibody that binds an exosome specific antigen; and vi) detecting a signal produced upon illumination of the control subset and/or the test; and vii) detecting the antigen(s) of interest.
Vitamin B<sub>12</sub> Derivatives Suitably Tailored for the Synthesis of Photolabile Conjugates
作者:Agnieszka Jackowska、Dorota Gryko
DOI:10.1021/acs.orglett.1c00839
日期:2021.7.2
we decided to develop a method for the preparation of vitamin B12 conjugates that release tethered molecules upon exposure to light. Herein, we report vitamin B12 derivatives possessing a photolabile linker suitable for conjugation with amines, azides, and alkynes. The potential applications of such conjugates are broad and include the delivery of drugs, labels, and imaging agents to their place of
维生素 B 12结合物在生物科学中得到广泛研究。由于光提供时空控制,我们决定开发一种制备维生素 B 12结合物的方法,该结合物在暴露于光时会释放束缚分子。在此,我们报告了维生素 B 12衍生物,其具有适合与胺、叠氮化物和炔烃结合的光不稳定接头。这种偶联物的潜在应用是广泛的,包括将药物、标签和显像剂输送到它们的作用位置和时空释放。
[EN] LIGHT MEDIATED REGULATION OF PROTEIN DIMERIZATION<br/>[FR] RÉGULATION MÉDIÉE PAR LA LUMIÈRE DE LA DIMÉRISATION DE PROTÉINE
申请人:UNIV NORTH CAROLINA
公开号:WO2012024558A3
公开(公告)日:2012-07-05
3D-EXOQUANT METHOD FOR THE ANALYSIS OF SURFACE MOLECULES AND QUANTIFICATION OF TISSUE-SPECIFIC EXOSOMES IN BIOLOGICAL FLUIDS
申请人:The Regents of the University of California
公开号:US20190025330A1
公开(公告)日:2019-01-24
In various embodiments methods are provided for identifying and/or quantifying one or more antigens of interest (biomarkers) on the surface of cell- or tissue-specific exosomes. In an illustrative embodiments the methods comprise: i) incubating a population of exosomes with one or more tissue-specific antibodies that bind an antigen specific to a tissue or cell type of interest that produces exosomes, where the tissue specific antibodies are attached to acceptor bead or magnetic beads so the antibodies bind exosomes displaying the antigen; ii) obtaining a purified population of exosomes bound by the tissue specific antibodies with and/or without photo-cleavable linker based technology; iii) incubating a test subset of the isolated tissue-specific exosomes with acceptor beads attached to test antibodies that bind an antigen of interest thereby binding exosomes that display the antigen of interest and a control subset with negative control acceptor beads; v) incubating the test subset of isolated exosomes and the control subset of exosomes with a donor-bearing antibody that binds an exosome specific antigen; and vi) detecting a signal produced upon illumination of the control subset and/or the test; and vii) detecting the antigen(s) of interest.
Light-cleavable rapamycin dimer as an optical trigger for protein dimerization
作者:Kalyn A. Brown、Yan Zou、David Shirvanyants、Jie Zhang、Subhas Samanta、Pavan K. Mantravadi、Nikolay V. Dokholyan、Alexander Deiters
DOI:10.1039/c4cc09442e
日期:——
Protein heterodimerization of FKBP12 and FRB can be optically controlled with a photocleavable rapamycin dimer.