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Table 9 The optical nanomaterial-based biosensors for the detection of circulating tumor cells (CTCs)

From: Optical nanomaterial-based detection of biomarkers in liquid biopsy

Biomarker

Disease

Optical nanomaterial

Biorecognition element

Detection method

Matrix

Limit of detection

Linear range

Clinical sample [a]

Note

CTC

Lung Cancer

Breast Cancer

AuNPs

EGF Ligand

SERS

Spectroscopy

Blood

5 cells/mL

5–50 cells/mL

Blood

(n = 20)

2011 [221]

CTC

Ovarian Cancer

Bismuth NPs

(+ Magnetic NPs)

Folic Acid Ligands

X-ray Fluorescence Spectrometry

Buffer

 ~ 100 cells/mL

100–100,000 cells/mL

2012 [222]

CTC

Cancer

AuNPs

Antibody

Colorimetric Detection

Buffer

40 cells/mL

100–10,000 cells/mL

2014 [223]

CTC

Breast Cancer

AuNPs

Aptamer

Laser Desorption Ionization Mass Spectrometry

(LD-IMS)

Diluted Blood

10 cells/mL

10–1000 cells/mL

2015 [224]

CTC

Lung Cancer

Magnetic UCNPs

and Silicon NWs

Antibody

ULISA

Buffer

N/A

N/A

Blood

(n = 21)

2015 [14]

CTC

Breast Cancer

AuNPs

Folic Acid Ligands

SERS

Spectroscopy

Rabbit Blood

5 cells/mL

5–500

cells/mL

2015 [225]

CTC

Breast Cancer

CNDs, GQD,

(+ Magnetic NPs)

Antibody

Fluorescence Detection

Blood

10 cells/mL

N/A

2016 [226]

CTC

Breast Cancer

Ag@Au

Core–Shell NPs

Aptamer

Circular Dichroism (CD) Spectrometry

Blood

10 ± 6 cells/mL

50–105 Cells/mL

2016 [227]

CTC

Breast Cancer

Au@Ag-Au

Core–Shell NRs

Aptamer

SERS

Spectroscopy

Blood

20 cells/mL

200–12,000

cells/mL

2017 [228]

CTC

Breast Cancer

Ovarian Cancer

Triangular

Ag Nanoprism

(+ Magnetic NPs)

Folic Acid Ligands

SERS

Spectroscopy

Blood

1 cells/mL

1–100

cells/mL

2018 [229]

CTC

Breast Cancer

Ovarian Cancer

Fe3O4@nSiO2@mSiO2 NPs

Aptamer

Fluorescence Detection

Buffer

100 cells/mL

102–105

Cells/mL

2018 [230]

CTC

Breast Cancer

AuPd NPs

Aptamer

ECL

Detection

N/A

40 cells/mL

102–107

Cells/mL

2018 [231]

CTC

Liver Cancer

Fe3O4@AgNPs

Antibody

SERS

Spectroscopy

Blood

1 cells/mL

1–100

cells/mL

Blood

(n = 18)

2018 [232]

CTC

Cancer

QDs

(+ Magnetic NPs)

Antibody

Fluorescence Detection

Buffer

N/A

N/A

Blood

(n = 9)

2019 [233]

CTC

Breast Cancer

UCNPs

Antibody

Time-Resolved Photoluminescence (TRPL) Spectroscopy

Buffer

1 cells/well

2–1024

cells/200 uL

Blood

(n = 15)

2019 [234]

CTC

Breast Cancer

SPION-PEI@AuNPs

(+ Magnetic NPs)

Aptamer

SERS

Spectroscopy

Blood

1 cells/mL

1–25

cells/mL

Blood

(n = 2)

2019 [235]

CTC

Breast Cancer

Au@CNDs

Aptamer

ECL

Detection

N/A

34 cells/mL

100–10,000 cells/mL

2020 [236]

CTC

Breast Cancer

AuNPs

Aptamer

Fiber-Optic

SPR

Buffer

49 cells/mL

N/A

2020 [237]

CTC

Breast Cancer

AuNPs

Antibody and Folic Acid Ligands

SPR

Spectroscopy

N/A

1 cells/mL

101–105 cell/mL

2020 [238]

CTC

Cancer

Au Nanostar and

Au Nanoflower

Aptamer

SERS

Spectroscopy

N/A

5 cells/mL

5–200 cells/mL

2021 [239]

    

Fluorescence Detection

N/A

10 cells/mL

10–200 cells/mL

CTC

Breast Cancer

Black TiO2 NPs

Folic Acid Ligands

SERS

Spectroscopy

Rabbit Blood

2 cells/mL

N/A

Blood

(n = 6)

2022 [240]

CTC

Cancer

AuNPs

Aptamer

Fluorescence Detection

N/A

2 cells/200μL

10–100 cells/200μL

2023 [241]

CTC

Cancer

Au Nanostar@SiO2

Antibody

SERS

Spectroscopy

Buffer

N/A

N/A

2023 [242]

CTC

Breast Cancer

Ag Nanorods

(+ Magnetic NPs)

Aptamer

SERS

Spectroscopy

Buffer

2 cells/mL

5–1000 cells/mL

2023 [243]

  1. aThe healthy donors’ biofluids, which are utilized to make model samples by spiking known concentrations of target analytes (e.g., recovery tests), are excluded here. To avoid confusion, we added only the biofluids obtained from actual patients (i.e., unknown samples) as “clinical samples” in this table