Label-Free Quantification of Anti-TNF-α in Patients Treated with Adalimumab Using an Optical Biosensor

Sensors

Efraín Esteban¹  Rosa Helena Bustos¹  Diego Jaimes¹  Julio-César García¹  Carlos Zapata¹  Edwin Jáuregui² 

[1] Evidence-Based Therapeutics Group, Clinical Pharmacology, Universidad de La Sabana, 140013 Chía, Colombia;Riesgo de Fractura S.A.-CAYRE, 110221 Bogotá, Colombia;

关键词: biological drug;    therapeutic drug monitoring (TDM);    optical biosensor;   

DOI  :  10.3390/s18030691

来源: DOAJ

【 摘 要 】

This study describes the development of an immunosensory label-free quantification methodology based on surface plasmon resonance (SPR) and its applicability in measuring/evaluating therapeutic drug monitoring (TDM) of anti-TNF-α monoclonal antibody (adalimumab) in rheumatoid arthritis (RA) patients. The experimental parameters evaluated in this study were immobilising ligands by pre-concentration assays, sensor surface regeneration, ascertaining the method’s sensitivity and correlating the results from quantifying plasma samples by ELISA immunoassay. The results showed that TNF-α quantification values (in RU) were significantly different when comparing patients (~50–250 RU) to controls (~10–20 RU). Likewise, there was 0.97 correlation for patients and 0.91 for healthy volunteers using SPR and ELISA comparison methodologies. SPR immunosensory detection provided a precise, sensitive strategy, along with real-time determination, for quantifying adalimumab, having great potential for clinical routine regarding TDM.

【 授权许可】

Unknown