Abstract
| Lingua originale | English |
|---|---|
| Numero di pagine | 6 |
| Rivista | Journal of Visualized Experiments |
| Volume | 2016 |
| Stato di pubblicazione | Published - 2016 |
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All Science Journal Classification (ASJC) codes
- Neuroscience(all)
- Chemical Engineering(all)
- Biochemistry, Genetics and Molecular Biology(all)
- Immunology and Microbiology(all)
Cita questo
Exosomal miRNA analysis in non-small cell lung cancer (NSCLC) patients' plasma through qPCR: A feasible liquid biopsy tool. / Castiglia, Marta; Giallombardo, Marco; Chacartegui Borras, Jorge; Peeters, Marc; Giallombardo, Marco; Van Der Steen, Nele; Pauwels, Patrick; Borrás, Jorge Chacártegui; Rolfo, Christian; Mertens, Inge; Rolfo, Christian Diego.
In: Journal of Visualized Experiments, Vol. 2016, 2016.Risultato della ricerca: Article
}
TY - JOUR
T1 - Exosomal miRNA analysis in non-small cell lung cancer (NSCLC) patients' plasma through qPCR: A feasible liquid biopsy tool
AU - Castiglia, Marta
AU - Giallombardo, Marco
AU - Chacartegui Borras, Jorge
AU - Peeters, Marc
AU - Giallombardo, Marco
AU - Van Der Steen, Nele
AU - Pauwels, Patrick
AU - Borrás, Jorge Chacártegui
AU - Rolfo, Christian
AU - Mertens, Inge
AU - Rolfo, Christian Diego
PY - 2016
Y1 - 2016
N2 - The discovery of alterations in the EGFR and ALK genes, amongst others, in NSCLC has driven the development of targeted-drug therapy using selective tyrosine kinase inhibitors (TKIs). To optimize the use of these TKIs, the discovery of new biomarkers for early detection and disease progression is mandatory. These plasma-isolated exosomes can be used as a non-invasive and repeatable way for the detection and followup of these biomarkers. One ml of plasma from 12 NSCLC patients, with different mutations and treatments (and 6 healthy donors as controls), were used as exosome sources. After RNAse treatment, in order to degrade circulating miRNAs, the exosomes were isolated with a commercial kit and resuspended in specific buffers for further analysis. The exosomes were characterized by western blotting for ALIX and TSG101 and by transmission electron microscopy (TEM) analysis, the standard techniques to obtain biochemical and dimensional data of these nanovesicles. Total RNA extraction was performed with a high yield commercial kit. Due to the limited miRNA-content in exosomes, we decided to perform retro-transcription PCR using an individual assay for each selected miRNA. A panel of miRNAs (30b, 30c, 103, 122, 195, 203, 221, 222), all correlated with NSCLC disease, were analyzed taking advantage of the remarkable sensitivity and specificity of Real-Time PCR analysis; mir-1228-3p was used as endogenous control and data were processed according to the formula 2-ΔΔct13. Control values were used as baseline and results are shown in logarithmic scale.
AB - The discovery of alterations in the EGFR and ALK genes, amongst others, in NSCLC has driven the development of targeted-drug therapy using selective tyrosine kinase inhibitors (TKIs). To optimize the use of these TKIs, the discovery of new biomarkers for early detection and disease progression is mandatory. These plasma-isolated exosomes can be used as a non-invasive and repeatable way for the detection and followup of these biomarkers. One ml of plasma from 12 NSCLC patients, with different mutations and treatments (and 6 healthy donors as controls), were used as exosome sources. After RNAse treatment, in order to degrade circulating miRNAs, the exosomes were isolated with a commercial kit and resuspended in specific buffers for further analysis. The exosomes were characterized by western blotting for ALIX and TSG101 and by transmission electron microscopy (TEM) analysis, the standard techniques to obtain biochemical and dimensional data of these nanovesicles. Total RNA extraction was performed with a high yield commercial kit. Due to the limited miRNA-content in exosomes, we decided to perform retro-transcription PCR using an individual assay for each selected miRNA. A panel of miRNAs (30b, 30c, 103, 122, 195, 203, 221, 222), all correlated with NSCLC disease, were analyzed taking advantage of the remarkable sensitivity and specificity of Real-Time PCR analysis; mir-1228-3p was used as endogenous control and data were processed according to the formula 2-ΔΔct13. Control values were used as baseline and results are shown in logarithmic scale.
KW - Biomarker; Cancer; Exosomes; Issue 111; Liquid biopsy; Medicine; miRNAs; NSCLC; Biomarkers
KW - Diagnostic; Real-Time Polymerase Chain Reaction; Ribonucleases; Neuroscience (all); Chemical Engineering (all); Biochemistry
KW - Genetics and Molecular Biology (all); Immunology and Microbiology (all)
KW - Non-Small-Cell Lung; Case-Control Studies; Endopeptidase K; Exosomes; Humans; Lung Neoplasms; MicroRNAs; Reagent Kits
KW - Tumor; Biopsy; Carcinoma
UR - http://hdl.handle.net/10447/295326
UR - http://www.jove.com/pdf/53900
M3 - Article
VL - 2016
JO - Journal of Visualized Experiments
JF - Journal of Visualized Experiments
SN - 1940-087X
ER -