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Ramshani Z, Fan F, Wei A, Romanello-Giroud-Joaquim M, Gil CH, George M, Yoder MC, Hanjaya-Putra D, Senapati S, Chang HC. A multiplexed immuno-sensor for on-line and automated monitoring of tissue culture protein biomarkers. Talanta 2020; 225:122021. [PMID: 33592751 DOI: 10.1016/j.talanta.2020.122021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 12/11/2020] [Accepted: 12/13/2020] [Indexed: 12/12/2022]
Abstract
Frequent on-line and automated monitoring of multiple protein biomarkers level secreted in the culture media during tissue growth is essential for the successful development of Tissue Engineering and Regenerative Medicine (TERM) products. Here, we present a low-cost, rapid, reliable, and integrable anion-exchange membrane-(AEM) based multiplexed sensing platform for this application. Unlike the gold-standard manual ELISA test, incubation/wash steps are optimized for each target and precisely metered in microfluidic chips to enhance selectivity. Unlike optical detection and unreliable visual detection for the ELISA test, which require standardization for every usage, the AEM ion current signal also offers robustness, endowed by the pH and ionic strength control capability of the ion-selective membrane, such that a universal standard curve can be used to calibrate all runs. The electrical signal is enhanced by highly charged silica nanoparticle reporters, which also act as hydrodynamic shear amplifiers to enhance selectivity during wash. This AEM-based sensing platform is tested with vascular protein biomarkers, Endothelin-1 (ET-1), Angiogenin (ANG) and Placental Growth Factor (PlGF). The limit of detection and three-decade dynamic range are comparable to ELISA assay but with a significantly reduced assay time of 1 h vs 7 h, due to the elimination of calibration and blocking steps. Optimized protocol for each target renders the detection highly reliable with more than 98% confidence. The multiplexed detection capability of the platform is also demonstrated by simultaneous detection of ET-1, ANG and PlGF in 40 μl of the vascular endothelial cell culture supernatants using three-membrane AEM sensor and the performance is validated against ELISA.
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Affiliation(s)
- Zeinab Ramshani
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, IN 46556, USA
| | - Fei Fan
- Department of Aerospace and Mechanical Engineering, Bioengineering Graduate Program, University of Notre Dame, IN 46556, USA
| | - Alicia Wei
- Department of Aerospace and Mechanical Engineering, Bioengineering Graduate Program, University of Notre Dame, IN 46556, USA
| | - Miguel Romanello-Giroud-Joaquim
- Department of Aerospace and Mechanical Engineering, Bioengineering Graduate Program, University of Notre Dame, IN 46556, USA
| | - Chang-Hyun Gil
- Department of Surgery, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Matt George
- Vascugen Inc., 5602 Research Park Blvd, Ste 213, Madison, WI 53719, USA
| | - Mervin C Yoder
- Vascugen Inc., 5602 Research Park Blvd, Ste 213, Madison, WI 53719, USA
| | - Donny Hanjaya-Putra
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, IN 46556, USA; Department of Aerospace and Mechanical Engineering, Bioengineering Graduate Program, University of Notre Dame, IN 46556, USA
| | - Satyajyoti Senapati
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, IN 46556, USA.
| | - Hsueh-Chia Chang
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, IN 46556, USA; Department of Aerospace and Mechanical Engineering, Bioengineering Graduate Program, University of Notre Dame, IN 46556, USA.
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