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EnglishThe cancer diagnosis relies on morphological examination of human cells or tissue samples: This is considered the 'gold standard' for the diagnosis of malignancy in any organ system. However, diagnosis based on morphological examination can be difficult, recent studies recognized the cell elasticity changes as a marker for cancer detection. A metrological characterized AFM can be used to make reproducible elasticity measurements on biological samples. In this paper a method to accurately measure a cell elasticity change based on measurement of a stable and homogeneous material is proposed. Nanoindenter characteristics (nanoindenter with pyramidal tip and triangular shape) and indentation parameters (0.1 V as approaching point, 5 um/s as indentation speed and indentation load of 0.4 V) were found feasible for all tested samples. A modal cell elastic modulus of 0.5 kPa for lung tumor cell and a limit AFM measurement reproducibility of 4% was obtained.
Cell elasticity change as a biomarker for cancer detection: An AFM metrological approach / Demichelis, A.; Divieto, C.; Mortati, L.; Pavarelli, S.; Sassi, M. P.; Sassi, G. - (2018). ((Intervento presentato al convegno 1st Workshop on Nanotechnology in Instrumentation and Measurement, NANOFIM 2015 tenutosi a Lecce, Italy nel July 24-25, 2015 [10.1109/NANOFIM.2015.8425323].
| Titolo: | Cell elasticity change as a biomarker for cancer detection: An AFM metrological approach | |
| Autori: | ||
| Data di pubblicazione: | 2018 | |
| Nome del convegno: | 1st Workshop on Nanotechnology in Instrumentation and Measurement, NANOFIM 2015 | |
| Luogo del convegno: | Lecce, Italy | |
| Anno del convegno: | July 24-25, 2015 | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1109/NANOFIM.2015.8425323 | |
| Abstract: | The cancer diagnosis relies on morphological examination of human cells or tissue samples: This i...s considered the 'gold standard' for the diagnosis of malignancy in any organ system. However, diagnosis based on morphological examination can be difficult, recent studies recognized the cell elasticity changes as a marker for cancer detection. A metrological characterized AFM can be used to make reproducible elasticity measurements on biological samples. In this paper a method to accurately measure a cell elasticity change based on measurement of a stable and homogeneous material is proposed. Nanoindenter characteristics (nanoindenter with pyramidal tip and triangular shape) and indentation parameters (0.1 V as approaching point, 5 um/s as indentation speed and indentation load of 0.4 V) were found feasible for all tested samples. A modal cell elastic modulus of 0.5 kPa for lung tumor cell and a limit AFM measurement reproducibility of 4% was obtained. | |
| Full-text (pubblici): | restricted | |
| Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |
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