RT Journal Article
T1 Dual immunoplatform to assess senescence biomarkers TIMP-1 and GDF-15: Advancing in the understanding of colorectal cancer.
A1 Tejerina Miranda, Sandra
A1 Gamella Carballo, María
A1 Pedrero Muñoz, María
A1 Montero Calle, Ana
A1 Rejas, Raquel
A1 Pingarrón Carrazón, José Manuel
A1 Barderas Manchado, Rodrigo
A1 Campuzano Ruiz, Susana
AB In this work, we report the development of electrochemical bioplatforms for both the single determination of TIMP-1 and the simultaneous determination of TIMP-1 and GDF-15, two biomarkers of cellular senescence and prognosis in colorectal cancer (CRC). The designed immunoplatforms rely on a sandwich-type configuration labeled with horseradish peroxidase (HRP) built on magnetic microsupports and involve a pair of specific antibodies to capture and detect each target protein. Amperometric readout was performed upon trapping the magnetic bioconjugates on the surface of either single or dual disposable carbon electrodes, using the hydroquinone/hydrogen peroxide (HQ/H2O2) system. The attractive analytical performance of the TIMP-1 bioplatform, achieving a LOD of 13.0 pg mL‒1 and a dynamic range between 43.4 and 2500 pg mL‒1, led us to exploit it for TIMP-1 determination in cell extracts and tissues of CRC samples. The results showed the possibility of discriminating the metastatic capabilities of cells and detecting CRC patients, after just a simple dilution and in only 60 min. The multiplexing feasibility of the developed immunoplatform allowed the implementation of a dual assay for the simultaneous determination of TIMP-1 (LOD 19.2 pg mL‒1) and GDF-15 (LOD 16.6 pg mL‒1). The dual platform was used for the analysis of CRC samples (plasma and cell secretomes) in just 75 min and using a very simple protocol. These characteristics make the developed immunoplatform a very attractive tool to face particularly challenging samples, such as secretomes or plasma from CRC patients, due to the required sensitivity, thus providing a better snapshot of CRC.
PB Elsevier
YR 2024
FD 2024
LK https://hdl.handle.net/20.500.14352/113765
UL https://hdl.handle.net/20.500.14352/113765
LA eng
NO Sandra Tejerina-Miranda, Maria Gamella, María Pedrero, Ana Montero-Calle, Raquel Rejas, José M. Pingarrón, Rodrigo Barderas, Susana Campuzano, Dual immunoplatform to assess senescence biomarkers TIMP-1 and GDF-15: Advancing in the understanding of colorectal cancer, Electrochimica Acta, Volume 503, 2024, 144822, ISSN 0013-4686
DS Docta Complutense
RD 8 abr 2025