We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Long-term fluorescence hyperspectral imaging of on-chip treated co-culture tumour spheroids to follow clonal evolution.
- Authors
St-Georges-Robillard, Amélie; Cahuzac, Maxime; Péant, Benjamin; Fleury, Hubert; Lateef, Muhammad Abdul; Ricard, Alexis; Sauriol, Alexandre; Leblond, Frédéric; Mes-Masson, Anne-Marie; Gervais, Thomas
- Abstract
Multicellular tumour spheroids are an ideal in vitro tumour model to study clonal heterogeneity and drug resistance in cancer research because different cell types can be mixed at will. However, measuring the individual response of each cell population over time is challenging: current methods are either destructive, such as flow cytometry, or cannot image throughout a spheroid, such as confocal microscopy. Our group previously developed a wide-field fluorescence hyperspectral imaging system to study spheroids formed and cultured in microfluidic chips. In the present study, two subclones of a single parental ovarian cancer cell line transfected to express different fluorophores were produced and co-culture spheroids were formed on-chip using ratios forming highly asymmetric subpopulations. We performed a 3D proliferation assay on each cell population forming the spheroids that matched the 2D growth behaviour. Response assays to PARP inhibitors and platinum-based drugs were also performed to follow the clonal evolution of mixed populations. Our experiments show that hyperspectral imaging can detect spheroid response before observing a decrease in spheroid diameter. Hyperspectral imaging and microfluidic-based spheroid assays provide a versatile solution to study clonal heterogeneity, able to measure response in subpopulations presenting as little as 10% of the initial spheroid.
- Subjects
CANCER research; CO-cultures; CLONE cells; CELL populations; HYPERSPECTRAL imaging systems; MICROFLUIDIC analytical techniques
- Publication
Integrative Biology, 2019, Vol 11, Issue 4, p130
- ISSN
1757-9694
- Publication type
Article
- DOI
10.1093/intbio/zyz012