PMID- 36979618 OWN - NLM STAT- MEDLINE DCOM- 20230330 LR - 20230331 IS - 2079-6374 (Electronic) IS - 2079-6374 (Linking) VI - 13 IP - 3 DP - 2023 Mar 20 TI - Clinically Deployable Bioelectronic Sensing Platform for Ultrasensitive Detection of Transferrin in Serum Sample. LID - 10.3390/bios13030406 [doi] LID - 406 AB - Varying levels of transferrin (Tf) have been associated with different disease conditions and are known to play a crucial role in various malignancies. Regular monitoring of the variations in Tf levels can be useful for managing related diseases, especially for the prognosis of certain cancers. We fabricated an immunosensor based on graphene oxide (GO) nanosheets to indirectly detect Tf levels in cancer patients. The GO nanosheets were deposited onto an indium tin oxide (ITO)-coated glass substrate and annealed at 120 degrees C to obtain reduced GO (rGO) films, followed by the immobilization of an antibody, anti-Tf. The materials and sensor probe used were systematically characterized by UV-Visible spectroscopy (UV-Vis), X-ray diffraction (XRD), atomic force microscopy (AFM), and Fourier transform infrared spectroscopy (FTIR). Cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and differential pulse voltammetry (DPV) were also used for the stepwise sensor probe characterizations and Tf detection in serum samples, respectively. The anti-Tf/rGO/ITO immunosensor DPV output demonstrated an excellent Tf detection capability in the linear range of 0.1 mg mL(-1) to 12 mg mL(-1) compared to the enzyme-linked immunosorbent assay (ELISA) detection range, with a limit of detection (LOD) of 0.010 +/- 0.007 mg mL(-1). Furthermore, the results of the fabricated immunosensor were compared with those of the ELISA and autobioanalyzer techniques, showing an outstanding match with < 5% error and demonstrating the immunosensor's clinical potential. FAU - Kaur, Harleen AU - Kaur H AD - CSIR-National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi 110012, India. FAU - Chittineedi, Prasanthi AU - Chittineedi P AD - Onco-Stem Cell Research Laboratory, Department of Biochemistry and Bioinformatics, GITAM School of Science, GITAM (Deemed to be) University, Visakhapatnam 530045, India. FAU - Bellala, Ravi Shankar AU - Bellala RS AD - Department of Clinical Oncology, Omega Hospitals, Visakhapatnam 530040, India. FAU - Bellala, Venkata Madhavi AU - Bellala VM AD - Department of Pathology, GITAM Institute of Medical Sciences and Research, Visakhapatnam 530045, India. FAU - Singh, Sandeep AU - Singh S AD - CSIR-National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi 110012, India. FAU - Kumari, Rohini AU - Kumari R AD - Laboratory of Bio-Physio Sensors and Nanobioengineering, School of Biochemical Engineering, Indian Institute of Technology (BHU), Varanasi 221005, India. FAU - Chandra, Pranjal AU - Chandra P AUID- ORCID: 0000-0003-3428-3195 AD - Laboratory of Bio-Physio Sensors and Nanobioengineering, School of Biochemical Engineering, Indian Institute of Technology (BHU), Varanasi 221005, India. FAU - Pandrangi, Santhi Latha AU - Pandrangi SL AUID- ORCID: 0000-0001-5317-8716 AD - Onco-Stem Cell Research Laboratory, Department of Biochemistry and Bioinformatics, GITAM School of Science, GITAM (Deemed to be) University, Visakhapatnam 530045, India. FAU - Singh, Surinder P AU - Singh SP AD - CSIR-National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi 110012, India. AD - Academy of Scientific and Innovative Research (AcSIR), CSIR-HRDC Campus, Ghaziabad 201002, India. LA - eng PT - Journal Article DEP - 20230320 PL - Switzerland TA - Biosensors (Basel) JT - Biosensors JID - 101609191 RN - 0 (graphene oxide) RN - 0 (Transferrin) RN - 7782-42-5 (Graphite) RN - 71243-84-0 (indium tin oxide) SB - IM MH - Humans MH - Immunoassay/methods MH - *Biosensing Techniques/methods MH - Transferrin MH - Electrochemical Techniques MH - *Neoplasms MH - *Graphite/chemistry MH - Limit of Detection PMC - PMC10046405 OTO - NOTNLM OT - electrochemical detection OT - ferritin OT - immunosensors OT - reduced graphene oxide OT - transferrin COIS- The authors declare no conflict of interest. EDAT- 2023/03/30 06:00 MHDA- 2023/03/30 06:11 PMCR- 2023/03/20 CRDT- 2023/03/29 01:20 PHST- 2023/02/09 00:00 [received] PHST- 2023/03/16 00:00 [revised] PHST- 2023/03/18 00:00 [accepted] PHST- 2023/03/30 06:11 [medline] PHST- 2023/03/29 01:20 [entrez] PHST- 2023/03/30 06:00 [pubmed] PHST- 2023/03/20 00:00 [pmc-release] AID - bios13030406 [pii] AID - biosensors-13-00406 [pii] AID - 10.3390/bios13030406 [doi] PST - epublish SO - Biosensors (Basel). 2023 Mar 20;13(3):406. doi: 10.3390/bios13030406.