2. Academic Validation
  3. Development of novel lab-on-a-chip platform for high-throughput radioimmunoassay

Development of novel lab-on-a-chip platform for high-throughput radioimmunoassay

  • Appl Radiat Isot. 2021 Feb;168:109526. doi: 10.1016/j.apradiso.2020.109526.
Jin-Hee Kim 1,  So-Young Lee 2,  Seung-Kon Lee 3
Affiliations

Affiliations

  • 1 Neutron and Radioisotope Application Research Division, Korea Atomic Energy Research Institute, 111, Daedeok-daero 989beon-gil, Yuseong-gu, Daejeon, 34057, Republic of Korea; School of Architectural, Civil, Environmental and Energy Engineering, Kyungpook National University, 80, Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea.
  • 2 Neutron and Radioisotope Application Research Division, Korea Atomic Energy Research Institute, 111, Daedeok-daero 989beon-gil, Yuseong-gu, Daejeon, 34057, Republic of Korea.
  • 3 Neutron and Radioisotope Application Research Division, Korea Atomic Energy Research Institute, 111, Daedeok-daero 989beon-gil, Yuseong-gu, Daejeon, 34057, Republic of Korea. Electronic address: [email protected].
PMID: 33316629 DOI: 10.1016/j.apradiso.2020.109526
Abstract

Radioimmunoassay (RIA) is an extremely specific and a highly sensitive type of immunoassay, but the long incubation time and generation of radioactive wastes limit the use of RIA. To complement these disadvantages of RIA, we suggest an advanced type of RIA based on a lab-on-a-chip (LOC) platform: μ-RIA. We designed a microfluidic chip for RIA and optimized the procedures of μ-RIA analysis, including surface modification, immunoreaction time, and washing. Based on the optimized conditions, we conducted a radioimmunoassay on the μ-RIA platform using a commercial RIA kit. With the μ-RIA, 5 min are adequate for analysis. The amount of reagent consumption is significantly reduced compared with conventional RIA. The standard curve with R2 = 0.9951 shows that we can quantitatively evaluate the amount of antigen present in unknown samples. We show the applicability of μ-RIA for the analysis of biomolecules and the potential of μ-RIA to be a novel platform for high-throughput analysis.

Keywords

Lab-on-a-chip; Microfluidics; RIA; Radioimmunoassay; Radioisotopes.

Figures