Multifunctional oval-shaped gold-nanoparticle-based selective detection of breast cancer cells using simple colorimetric and highly sensitive two-photon scattering assay.
Breast cancer is the most common cancer among women, and it is the second leading cause of cancer deaths in women today. The key to the effective and ultimately successful treatment of diseases such as cancer is early and accurate diagnosis. Driven by the need, in this article, we report for the first time a simple colorimetric and highly sensitive two-photon scattering assay for highly selective and sensitive detection of breast cancer SK-BR-3 cell lines at a 100 cells/mL level using a multifunctional (monoclonal anti-HER2/c-erb-2 antibody and S6 RNA aptamer-conjugated) oval-shaped gold-nanoparticle-based nanoconjugate. When multifunctional oval-shaped gold nanoparticles are mixed with the breast cancer SK-BR-3 cell line, a distinct color change occurs and two-photon scattering intensity increases by about 13 times. Experimental data with the HaCaT noncancerous cell line, as well as with MDA-MB-231 breast cancer cell line, clearly demonstrated that our assay was highly sensitive to SK-BR-3 and it was able to distinguish from other breast cancer cell lines that express low levels of HER2. The mechanism of selectivity and the assay's response change have been discussed. Our experimental results reported here open up a new possibility of rapid, easy, and reliable diagnosis of cancer cell lines by monitoring the colorimetric change and measuring TPS intensity from multifunctional gold nanosystems.
Lu
Wentong
W
Department of Chemistry, Jackson State University, Jackson, Mississippi 39217, USA.
Arumugam
Sri Ranjini
SR
Senapati
Dulal
D
Singh
Anant K
AK
Arbneshi
Tahir
T
Khan
Sadia Afrin
SA
Yu
Hongtao
H
Ray
Paresh Chandra
PC
D000042:Absorption; D000911:Antibodies, Monoclonal / Q000737:chemistry / Q000276:immunology / Q000378:metabolism; D052157:Aptamers, Nucleotide / Q000378:metabolism; D001943:Breast Neoplasms / Q000473:pathology*; D045744:Cell Line, Tumor; D003124:Colorimetry / Q000379:methods*; D006046:Gold / Q000737:chemistry*; D006801:Humans; D053768:Metal Nanoparticles / Q000737:chemistry*; D015335:Molecular Probes / Q000737:chemistry / Q000378:metabolism; D017785:Photons; D018719:Erb-b2 Receptor Tyrosine Kinases / Q000276:immunology; D012542:Scattering, Radiation; D013059:Spectrum Analysis, Raman
D000911:Antibodies, Monoclonal; D052157:Aptamers, Nucleotide; D006046:Gold; D015335:Molecular Probes; D018719:Erb-b2 Receptor Tyrosine Kinases