A homogeneous immunoassay for detection of the interaction between two tumor biomarkers of IGF1R-β and SOCS1

作者：Kuang, Zhenzhan; Deng, Hao; Xu, Lan; Hu, Qianying; Cai, Yan; Wang, Ruixue; Luo, Shuhong; Liu, Tiancai^*; Hao, Wenbo^*

来源：Biotechnology and Applied Biochemistry, 2021, 68(4): 769-775.

DOI：10.1002/bab.1989

• detective method
• protein interaction
• IGF1R-beta
• SOCS1
• homogeneous immunoassay technology

The current protein interaction method is time consuming and cumbersome or the instrument is expensive. A new method that is convenient, fast, and high throughput needs to be studied urgently. The purpose of this study was to establish a homogeneous immunoassay to detect the interaction between insulin-like growth factor-1 receptor-beta (IGF1R-beta) and suppressor of cytokine signaling 1 (SOCS1). The recombinant vectors IGF1R-beta/pENTER and SOCS1/pENTER were constructed and transfected into 293T cells. Based on homogeneous immunoassay technology, we established a suitable method. The signal intensity in the 293T lysate that overexpressed IGF1R-beta and SOCS1, respectively, was compared with the signal intensity in the simultaneous expression of IGF1R-beta and SOCS1. The interaction between IGF1R-beta and SOCS1 was verifiedin vitro. The detection system for the interaction between IGF1R-beta and SOCS1 was established. Compared with other methods, homogeneous immunoassay has the advantages of being rapid and sensitive, having higher sensitivity, and easy to operate. The interaction between IGF1R-beta and SOCS1 was tested to verify the feasibility of this method and prove its practicability and sensitivity. This new method can be used as a high-throughput platform for protein-protein interaction, with the advantages of trace detection, short detective time, and high detective sensitivity.

• 单位
  南方医科大学; 佛山科学技术学院