A high yield gold nanoparticle-based DNA isolation method for human papillomaviruses genotypes from cervical cancer tissue samples

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This preprint describes a novel DNA isolation technique using gold nanoparticles coated with oligonucleotide probes to extract high-risk human papillomavirus DNA from formalin-fixed, paraffin-embedded cervical cancer tissue. The researchers compared their method against a standard commercial kit and found it recovered 733 out of 800 copies of type-specific HPV DNA with complete specificity, whereas the commercial kit yielded only 36 copies. While the study demonstrates significantly improved sensitivity and specificity for viral diagnosis in cervical cancer samples, it remains an unpeer-reviewed preprint evaluating a chemical purification strategy rather than a clinical intervention. The paper does not explicitly discuss endometriosis or adenomyosis; it was included in the corpus via a keyword match in the upstream search index.

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Abstract

Gold nanoparticles (AuNPs) are commonly used in biosensors of various kinds. The purification of DNA from cancer tissues is an important step in diagnostic and therapeutic development, but current methods are not optimal. Many cervical cancer patients are also susceptible to high-risk human papillomavirus (HR-HPV) infection. Accurate viral diagnosis has so far relied on the extraction of adequate amounts of DNA from formalin-fixed, paraffin-embedded (FFPE) tissue samples. Since the sensitivity and specificity of commercially available purification kits are not optimal, we designed a DNA purification method based on AuNPs to purify sufficient amounts of HR-HPV DNA from cervical cancer tissue samples. AuNPs were coated with a series of oligonucleotide probes to hybridize to specific DNA sequences of HR-HPV genotypes. With this method, we recovered 733 out of 800 copies of type-specific HPV DNA with complete specificity, compared to 36 copies with a standard commercial kit (Qiagen FFPE).
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Materials

chemistry Medicinal and pharmaceutical chemistry Nano- and molecular-scale electronics Nano-biomaterials and bioscience Nanomagnetics Nanomaterials, thin films and nanointerfaces Nanomedicine Nanometrology and nanomechanics Nano-optics Nanopatterning, self-assembly and nanofabrication Nanostructures for energy and sensing applications Natural products chemistry Organo main group chemistry Other nanotechnology (unclassified) Other organic chemistry (unclassified) Photochemistry and photovoltaics Physical organic chemistry Supramolecular chemistry Gold nanoparticles (AuNPs) are commonly used in biosensors of various kinds. The purification of DNA from cancer tissues is an important step in diagnostic and therapeutic development, but current methods are not optimal. Many cervical cancer patients are also susceptible to high-risk human papillomavirus (HR-HPV) infection. Accurate viral diagnosis has so far relied on the extraction of adequate amounts of DNA from formalin-fixed, paraffin-embedded (FFPE) tissue samples. Since the sensitivity and specificity of commercially available purification kits are not optimal, we designed a DNA purification method based on AuNPs to purify sufficient amounts of HR-HPV DNA from cervical cancer tissue samples. AuNPs were coated with a series of oligonucleotide probes to hybridize to specific DNA sequences of HR-HPV genotypes. With this method, we recovered 733 out of 800 copies of type-specific HPV DNA with complete specificity, compared to 36 copies with a standard commercial kit (Qiagen FFPE).

Keywords

Biosensor; Cervical cancer; Gold nanoparticle; Human papillomavirus; Oligonucleotide probe; Paraffin embedding | Format: DOCX | Size: 484.5 KB | Download | When a peer-reviewed version of this preprint is available, this information will be updated in the information box above. If no peer-reviewed version is available, please cite this preprint using the following information: Seyyedi, N.; Farjadian, F.; Farhadi, A.; Rafiei Dehbidi, G.; Ranjbaran, R.; Zare, F.; Okhovat, M. A.; Nikouyan, N.; Behzad-Behbahani, A. Beilstein Arch. 2019, 2019106. doi:10.3762/bxiv.2019.106.v1 Citation data can be downloaded as file using the "Download" button or used for copy/paste from the text window below. Citation data in RIS format can be imported by all major citation management software, including EndNote, ProCite, RefWorks, and Zotero. © 2019 Seyyedi et al.; licensee Beilstein-Institut. This is an Open Access article under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0). Please note that the reuse, redistribution and reproduction in particular requires that the authors and source are credited. The license is subject to the Beilstein Archives terms and conditions: (https://www.beilstein-archives.org/xiv/terms)

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