Non-destructive Analysis of the Nuclei of Transgenic Living Cells Using Laser Tweezers and Near-infr

• 作 者: Wei Tang Ronald J. Newton Chan
• 机 构: Department of Biology,Department of Physics
• 出 处: 基因组、蛋白质组与生物信息学报（英文版）
• 发表日期: 2004年期
• 关键词: transgenic cell laser optical trapping near-infrared Raman spectroscopy biologic

Transgenic cell lines of loblolly pine (Pinus taeda L.) were analyzed by a compact laser-tweezers-Raman-spectroscopy (LTRS) system in this investigation. A low power diode laser at 785 nm was used for both laser optical trapping of single transgenic cells and excitation for near-infrared Raman spectroscopy of the nuclei of synchronized cells, which were treated as single organic particles, at the S-phase of the cell cycle. Transgenic living cells with gfp and uidA genes were used as biological samples to test this LTRS technique. As expected, different Raman spectra were observed from the tested biological samples. This technique provides a high sensitivity and enables real-time spectroscopic measurements of transgenic cell lines. It could be a valuable tool for the study of the fundamental cell and molecular biological process by trapping single nucleus and by providing a wealth of molecular information about the nuclei of cells.