The magnetic immunoconjugates were confined onto the working electrode (WE) surface of the SPCEs for amperometric detection using the hydroquinone/hydrogen peroxide/HRP (HQ/HO/HRP) redox system. The method allows the selective detection of TIM-1 protein over the 87-7500 pg mL concentration range in only 45 min, with a limit of detection of 26 pg mL. The developed bioplatform was successfully applied to the analysis of breast and lung cancer cell extracts, providing the first quantitative results of the target glycoprotein in these types of samples.
IBI104 shows potent anti-tumor efficacy when combined with anti-PD1 in vivo. Our results suggest that IBI104 is a promising blocking antibody for TIM-3-mediated suppressive signaling and can serve as effective cancer immunotherapy, especially in combination with anti-PD1.