Variable color two-photon fluorescent probe, method for imaging thiol activation in mitochondrion using same, and method for manufacturing the variable color two-photon fluorescent probe
过氧化氢 (H 2 O 2 ) 在多种生物过程的调节中发挥着重要作用,并与多种疾病有关。在亚细胞水平上定量测量 H 2 O 2水平对于了解其对生物过程的积极和消极影响非常重要。在此,一种双光子比率荧光探针(SHP-Cyto),具有基于硼酸酯的氨基甲酸酯离去基团作为 H 2 O 2反应触发剂和 6-(苯并[ d ]噻唑-2'-基)-2-( N合成了N-二甲氨基萘 (BTDAN) 作为荧光团,并检查了其原位检测细胞质 H 2 O 2的能力。该探针基于硼酸盐和 H 2 O 2之间的特异性反应,在生理介质中存在多种活性氧的情况下,响应 H 2 O 2显示荧光颜色变化(455 至 528 nm)。此外,SHP-Cyto 的比率双光子显微镜 (TPM) 图像显示,H 2 O 2水平从大脑到肾脏、皮肤、心脏、肺,然后是肝脏组织逐渐增加。 SHP-Cyto 通过 TPM 成功应用于活细胞和各种大鼠器官中内源产生的胞质
申请人:AJOU UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION 아주대학교산학협력단(220040257423) BRN ▼124-82-14602
公开号:KR20210054280A
公开(公告)日:2021-05-13
본 발명은 종양 특이적 이중 인식 이광자 형광 프로브 및 이를 이용한 암질환 진단 방법에 관한 것으로, 보다 상세하게는 D-글루코사민 및 β-D-갈락토피라노사이드를 이중 인식 부위로 결합시킨 이광자 형광 프로브는 암세포에 과발현된 포도당 수용체를 통하여 암세포에 선택적으로 흡수될 수 있으며, 암세포 내에 비정상적으로 상향조절된 β-갈락토시다아제(β-gal) 가수분해 효소활성을 통하여 형광 발색 및 색 변화를 나타내고, 상기 이광자 형광 프로브의 색 변화 비율 및 발색 강도를 통하여 암질환의 진단 및 암질환의 진행단계의 확인이 가능함에 따라, 본 발명의 이중 인식 이광자 형광 프로브는 암질환 치료에 있어서 정확하고 효과적인 암질환 진단 정보를 제공할 수 있다.
Discrimination between Human Colorectal Neoplasms with a Dual-Recognitive Two-Photon Probe
作者:Hyo Won Lee、Chang Su Lim、Hosam Choi、Myoung Ki Cho、Choong-Kyun Noh、Kiyoun Lee、Sung Jae Shin、Hwan Myung Kim
DOI:10.1021/acs.analchem.9b03951
日期:2019.11.19
Colorectal cancer is a major cause of cancer-related deaths worldwide. Histologic diagnosis using biopsy samples of colorectal neoplasms is the most important step in determining the treatment methods, but these methods have limitations in accuracy and effectiveness. Herein, we report a dual-recognition two-photon probe and its application in the discrimination between human colorectal neoplasms. The probe is composed of two monosaccharides, d-glucosamine and β-d-galactopyranoside, in a fluorophore for the monitoring of both glucose uptake and β-gal hydrolysis. In vitro/cell imaging studies revealed the excellent selectivity and sensitivity of the probe for glucose transporter-mediated glucose uptake and β-gal activity. Cancer-specific uptake was monitored by increased fluorescence intensity, and additional screening of cancer cells was achieved by changes in emission ratio owing to the higher activity of β-gal. Using human colon tissues and two-photon microscopy, we found that the plot of intensity versus ratio can accurately discriminate between colorectal neoplasms in the order of cancer progression (normal, adenoma, and carcinoma).
Ratiometric Detection of Mitochondrial Thiols with a Two-Photon Fluorescent Probe
作者:Chang Su Lim、Goutam Masanta、Hyung Joong Kim、Ji Hee Han、Hwan Myung Kim、Bong Rae Cho
DOI:10.1021/ja205081s
日期:2011.7.27
We report a ratiometric two-photon probe (SSH-Mito) for mitochondrial thiols. This probe shows a marked blue-to-yellow emission color change in response to RSH, a significant two-photon cross section, good mitochondrial thiol selectivity, low cytotoxicity, and insensitivity to pH over the biologically relevant pH range, allowing the direct visualization of RSH levels in live cells as well as in living tissues at 90-190 mu m depth without interference from other biologically relevant species through the use of two-photon microscopy.