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Peptide-Based Electrochemical Nanobiosensors for Clinical Diagnosis

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Surface Engineering and Functional Nanomaterials for Point-of-Care Analytical Devices

Abstract

The selectivity of a biosensor toward its target analyte is highly dependent on the biorecognition element used in the sensing matrix. A carefully designed peptide can be an alternative to an antibody, with major advantages such as more tolerance toward environmental conditions, tunable sequence to detect a wide variety of targets, and cost-effective solid-phase synthesis suitable for large-scale sensor production. Especially the electrochemical peptide-based biosensors have generated a lot of interest due to their sensitivity, selectivity, and quick response time for clinical diagnosis. The possibility of miniaturization of electrochemical devices also adds to its popularity for on-site diagnosis. In this chapter, we discuss the role of peptides as a biorecognition element in recently developed sensors for clinical diagnosis. The use of nanomaterials in sensor matrix development, surface engineering strategies for peptide immobilization and antifouling effect, signal amplification strategies, and the long-term stability of the developed sensors is critically assessed.

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Abbreviations

AgNP:

Silver nanoparticle

AuNP:

Gold nanoparticles

BREs:

Biorecognition element

CA:

Chronoamperometry

CA-125:

Carcinoembryonic antigen 125

CV:

Cyclic voltammetry

DPV:

Differential pulse voltammetry

EIS:

Electrochemical impedance spectroscopy

FBS:

Fetal bovine serum

LDR:

Linear dynamic range

LOD:

Limit of detection

LSV:

Linear sweep voltammetry

MMPs:

Matrix metalloproteinases

PSA:

Prostate-specific antigen

SPPS:

Solid-phase peptide synthesis

SWV:

Square wave voltammetry

β-CD:

β-cyclodextrin

A:

Alanine

R:

Arginine

N:

Asparagine

D:

Aspartic acid

C:

Cysteine

Q:

Glutamine

E:

Glutamic acid

G:

Glycine

H:

Histidine

I:

Isoleucine

L:

Leucine

K:

Lysine

M:

Methionine

F:

Phenylalanine

P:

Proline

S:

Serine

T:

Threonine

W:

Tryptophan

Y:

Tyrosine

V:

Valine

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Correspondence to Buddhadev Purohit .

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© 2023 The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

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Purohit, B., Svendsen, W.E. (2023). Peptide-Based Electrochemical Nanobiosensors for Clinical Diagnosis. In: Purohit, B., Chandra, P. (eds) Surface Engineering and Functional Nanomaterials for Point-of-Care Analytical Devices. Springer, Singapore. https://doi.org/10.1007/978-981-99-3025-8_9

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