Chem. J. Chinese Universities ›› 2016, Vol. 37 ›› Issue (4): 638.doi: 10.7503/cjcu20150727

• Analytical Chemistry • Previous Articles     Next Articles

Two-photon Fluorescent Labeling Kit for the Real-time Dynamic Biopsy of CA19-9

HUANG Chibao1,2,*(), ZHANG Daohai3, ZENG Boping1, LIU Qibin3, CHEN Huashi1, KANG Shuai1, CHEN Xiaoyuan2   

  1. 1. Chemistry and Chemical Engineering College, Zunyi Normal University, Zunyi 563002, China
    2. College of Agricultural Science and Engineering, Shaoguan University, Shaoguan 512005, China
    3. College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China
  • Received:2015-09-17 Online:2016-04-10 Published:2016-03-10
  • Contact: HUANG Chibao E-mail:huangchibao@163.com
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos:21562050, 11464052), the Special Fund Project of the Construction of the Eighth Batch of Scientific and Technological Innovation Talent Team in Guizhou Province, China[No:(2015)4007], Guizhou Provincial Science and Technology Fund Project, China(Nos:J[2015]2146, J[2012]2345), the Key Project of Education Department of Guizhou Province(Nos:KY[2014]296), KY(2013)171), the Teaching Contents and Curriculum System Reform Project of Higher Education in Guizhou Province, China(No.KY [2014] JXGChcb), the Project of “15851 Talents Elite Project” in Zunyi City, China[No:(2015)4007] and the Science and Technology Project of Zunyi City Honghuagang District, China(No.[2015]18)

Abstract:

Carbohydrate antigen CA19-9(Ag) is a tumor marker associated with pancreatic cancer, gallbladder cancer, colon cancer and gastric cancer in early stage of tumor and cancer stage. Antibody Ab19-9(Ab) to carbohydrate antigens were labeled to form probe-labeled antibody LP-Ab using the prepared two-photon fluorescence probe LP. On the basis of the antigen-antibody specificity affinity principle, LP-Ab could combine with carbohydrate antigen Ag into a complex LP-Ab·Ag, which was excited by near infrared laser(740 nm) and emitted strong two-photon fluorescence to accomplish the high sensitive biopsy and real-time dynamic high-resolution imaging of the tumor marker Ag with two-photon fluorescence microscope. Based on this, a simple and convenient two-photon fluorescent labeling kit was prepared to realize the rapid detection of tumor, which is convenient for large-scale clinic testing and screening. The research further broadens the application of LP, and provides a sharp tool for revealing the mechanism of cancer occurrence, development and metastasis. LP-Ab can be used to observe and study the dynamic transfer mechanisms of the tumor markers in cells and the mechanism of carcinogenesis.

Key words: Carbonhydrate antigen CA19-9, Antibody Ab19-9, Immunofluorescence labeling, Two-photon, Biopsy(Ed.: P, H, N, K)

CLC Number: 

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