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 | Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
15/10/2020 |
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Data da última atualização: |
12/08/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SOARES, J. C.; MELENDEZ, M. E.; SOARES, A. C.; ARANTES, L. M. R. B.; RODRIGUES, V. C.; CARVALHO, A. L.; REIS, R. M.; MATTOSO, L. H. C.; OLIVEIRA JUNIOR, O. N. |
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Afiliação: |
LUIZ HENRIQUE CAPPARELLI MATTOSO, CNPDIA. |
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Título: |
Detection of HPV16 in cell lines deriving from cervical and head and neck cancer using a genosensor made with a DNA probe on a layer-by-layer matrix. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Materials Chemistry Frontiers, v. 4, n. 11, 2020. |
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Páginas: |
3258-3266 |
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DOI: |
10.1039/d0qm00530d |
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Idioma: |
Inglês |
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Conteúdo: |
Detection of human papillomavirus 16 (HPV16) is essential for the diagnosis of cervix and head and neck cancer, which has prompted the development of biosensors to replace the sophisticated molecular techniques. In this paper, we employ a genosensor made with a HPV16 DNA probe (cpHPV16) immobilized on a layer-by-layer (LbL) film of chitosan and carbon nanotubes to detect a complementary sequence HPV16 oligo (ssHPV16). In addition to employing impedance spectroscopy, which has already been used in the literature, we detect ssHPV16 in buffer samples and in cancer cell line samples with UV-vis. spectroscopy. The limit of detection was 18.5 pmol L−1 in impedance spectroscopy measurements and 10.9 pmol L−1 in UV-vis measurements. Distinction of the various ssHPV16 concentrations and of the cancer cell line samples CasKi, SiHa, UMSCC-47, UM-SCC104 and 93-VU147T with both electrical and optical data could be made with the multidimensional projection technique referred to as interactive document mapping (IDMAP), with which we could confirm the absence of false positives by testing cell lines that did not contain ssHPV16 (JHU12, JHU13 and JHU28). The hybridization between cpHPV16 and ssHPV16 responsible for the biosensing was verified with polarization-modulated infrared reflection absorption spectroscopy (PM-IRRAS), while the concentration dependence could be modeled with a double Freundlich function. The use of optical absorbance measurements to detect ssHPV16 is promising toward a simple colorimetric detection. MenosDetection of human papillomavirus 16 (HPV16) is essential for the diagnosis of cervix and head and neck cancer, which has prompted the development of biosensors to replace the sophisticated molecular techniques. In this paper, we employ a genosensor made with a HPV16 DNA probe (cpHPV16) immobilized on a layer-by-layer (LbL) film of chitosan and carbon nanotubes to detect a complementary sequence HPV16 oligo (ssHPV16). In addition to employing impedance spectroscopy, which has already been used in the literature, we detect ssHPV16 in buffer samples and in cancer cell line samples with UV-vis. spectroscopy. The limit of detection was 18.5 pmol L−1 in impedance spectroscopy measurements and 10.9 pmol L−1 in UV-vis measurements. Distinction of the various ssHPV16 concentrations and of the cancer cell line samples CasKi, SiHa, UMSCC-47, UM-SCC104 and 93-VU147T with both electrical and optical data could be made with the multidimensional projection technique referred to as interactive document mapping (IDMAP), with which we could confirm the absence of false positives by testing cell lines that did not contain ssHPV16 (JHU12, JHU13 and JHU28). The hybridization between cpHPV16 and ssHPV16 responsible for the biosensing was verified with polarization-modulated infrared reflection absorption spectroscopy (PM-IRRAS), while the concentration dependence could be modeled with a double Freundlich function. The use of optical absorbance measurements to detect ssHPV16 is promising toward a... Mostrar Tudo |
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Palavras-Chave: |
Chitosan and carbon nanotubes; Sophisticated molecular techniques. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02407naa a2200265 a 4500
001 2125561
005 2022-08-12
008 2020 bl uuuu u00u1 u #d
024 7 $a10.1039/d0qm00530d$2DOI
100 1 $aSOARES, J. C.
245 $aDetection of HPV16 in cell lines deriving from cervical and head and neck cancer using a genosensor made with a DNA probe on a layer-by-layer matrix.$h[electronic resource]
260 $c2020
300 $a3258-3266
520 $aDetection of human papillomavirus 16 (HPV16) is essential for the diagnosis of cervix and head and neck cancer, which has prompted the development of biosensors to replace the sophisticated molecular techniques. In this paper, we employ a genosensor made with a HPV16 DNA probe (cpHPV16) immobilized on a layer-by-layer (LbL) film of chitosan and carbon nanotubes to detect a complementary sequence HPV16 oligo (ssHPV16). In addition to employing impedance spectroscopy, which has already been used in the literature, we detect ssHPV16 in buffer samples and in cancer cell line samples with UV-vis. spectroscopy. The limit of detection was 18.5 pmol L−1 in impedance spectroscopy measurements and 10.9 pmol L−1 in UV-vis measurements. Distinction of the various ssHPV16 concentrations and of the cancer cell line samples CasKi, SiHa, UMSCC-47, UM-SCC104 and 93-VU147T with both electrical and optical data could be made with the multidimensional projection technique referred to as interactive document mapping (IDMAP), with which we could confirm the absence of false positives by testing cell lines that did not contain ssHPV16 (JHU12, JHU13 and JHU28). The hybridization between cpHPV16 and ssHPV16 responsible for the biosensing was verified with polarization-modulated infrared reflection absorption spectroscopy (PM-IRRAS), while the concentration dependence could be modeled with a double Freundlich function. The use of optical absorbance measurements to detect ssHPV16 is promising toward a simple colorimetric detection.
653 $aChitosan and carbon nanotubes
653 $aSophisticated molecular techniques
700 1 $aMELENDEZ, M. E.
700 1 $aSOARES, A. C.
700 1 $aARANTES, L. M. R. B.
700 1 $aRODRIGUES, V. C.
700 1 $aCARVALHO, A. L.
700 1 $aREIS, R. M.
700 1 $aMATTOSO, L. H. C.
700 1 $aOLIVEIRA JUNIOR, O. N.
773 $tMaterials Chemistry Frontiers$gv. 4, n. 11, 2020.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
04/12/2009 |
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Data da última atualização: |
04/12/2009 |
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Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
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Autoria: |
FERNANDES, F. D.; CARVALHO, M. A.; RAMOS, A. K. B.; GUIMARAES JUNIOR, R.; JANK, L. |
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Afiliação: |
FRANCISCO DUARTE FERNANDES, CPAC; MARCELO AYRES CARVALHO, CPAC; ALLAN KARDEC BRAGA RAMOS, CPAC; ROBERTO GUIMARAES JUNIOR, CPAC; LIANA JANK, CNPGC. |
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Título: |
Evaluating panicum maximum as an energy crop: biomass productivity. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
SIMPÓSIO INTERNACIONAL SOBRE MELHORAMENTO DE FORRAGEIRAS, 2., 2009, Campo Grande, MS. Anais... Campo Grande, MS: Embrapa Gado de Corte, 2009. 1 CD-ROM. |
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Idioma: |
Inglês |
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Thesagro: |
Panicum Maximum. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 00587naa a2200169 a 4500
001 1577359
005 2009-12-04
008 2009 bl uuuu u00u1 u #d
100 1 $aFERNANDES, F. D.
245 $aEvaluating panicum maximum as an energy crop$bbiomass productivity.
260 $c2009
650 $aPanicum Maximum
700 1 $aCARVALHO, M. A.
700 1 $aRAMOS, A. K. B.
700 1 $aGUIMARAES JUNIOR, R.
700 1 $aJANK, L.
773 $tSIMPÓSIO INTERNACIONAL SOBRE MELHORAMENTO DE FORRAGEIRAS, 2., 2009, Campo Grande, MS. Anais... Campo Grande, MS: Embrapa Gado de Corte, 2009. 1 CD-ROM.
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