Science China Chemistry

, Volume 61, Issue 8, pp 898–908 | Cite as

Galactose functionalized diketopyrrolopyrrole as NIR fluorescent probes for lectin detection and HepG2 cell targeting based on aggregation-induced emission mechanism

  • Yandi Hang
  • Xiaolei Cai
  • Jian Wang
  • Tao Jiang
  • Jianli HuaEmail author
  • Bin LiuEmail author


Since the elucidation that sugar-lectin interactions contribute to the understanding of “Glycomics”, how to construct glycosensors with rapid response, excellent sensitivity and selectivity is of intense research interest. Herein, we report the design of three NIR emissive glyco-probes based on diketopyrrolopyrrole (DPPs) conjugated with two (DPPG), four (DPPF-G) and six (DPPS-G) galactose groups. All three molecules could probe lectins with excellent sensitivity and selectivity. The increase of glyco-DPP emission in NIR region upon interaction with lectin is due to the aggregates formation induced by sugar-lectin interactions, which have been verified by dynamic light scattering (DLS) and scanning electronic microscope (SEM) analysis. Due to the multiple glyco-ligands on DPPS-G, it has been successfully used to stain HepG2 cells through interactions between galactose and asialogly-coprotein (ASGP-R), which are overexpressed on the surface of HepG2 cells.


NIR emissive glyco-probes diketopyrrolopyrrole sugar-lectin interactions 


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This work was supported by the National Natural Science Foundation of China (21772040, 21421004, 21372082, 21572062), the Fundamental Research Funds for the Central Universities (222201717003), the Programme of Introducing Talents of Discipline to Universities (B16017), a Visiting Program at NUS of China Scholarship Council (CSC), the Singapore Ministry of Education (R279-000-391-112), Singapore NRF Investigatorship (R279-000-444-281) and the National University of Singapore (R279-000-482-133).

Supplementary material

11426_2018_9259_MOESM1_ESM.docx (55.5 mb)
Galactose Functionalized Diketopyrrolopyrrole as a NIR Fluorescent Probe for lectin detection and HepG2 Cell Targeting based on Aggregation-induced-emission Mechanism


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Copyright information

© Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, School of Chemistry and Molecular EngineeringEast China University of Science & TechnologShanghaiChina
  2. 2.Department of Chemical and Biomolecular EngineeringNational University of SingaporeSingaporeSingapore
  3. 3.NUS Graduate School for Integrative Sciences and EngineeringNational University of SingaporeSingaporeSingapore

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