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Quantifying cell death induced by doxorubicin, hyperthermia or HIFU ablation with flow cytometry.


ABSTRACT: Triggered release and targeted drug delivery of potent anti-cancer agents using hyperthermia-mediated focused-ultrasound (FUS) is gaining momentum in the clinical setting. In early phase studies, tissue biopsy samples may be harvested to assess drug delivery efficacy and demonstrate lack of instantaneous cell death due to FUS exposure. We present an optimised tissue cell recovery method and a cell viability assay, compatible with intra-cellular doxorubicin. Flow cytometry was used to determine levels of cell death with suspensions comprised of: (i) HT29 cell line exposed to hyperthermia (30 min at 47 °C) and/or doxorubicin, or ex-vivo bovine liver tissue exposed to (ii) hyperthermia (up to 2 h at 45 °C), or (iii) ablative high intensity FUS (HIFU). Flow cytometric analysis revealed maximal cell death in HT29 receiving both heat and doxorubicin insults and increases in both cell granularity (p?

SUBMITTER: Lyon PC 

PROVIDER: S-EPMC7902827 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature

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Quantifying cell death induced by doxorubicin, hyperthermia or HIFU ablation with flow cytometry.

Lyon Paul Christopher PC   Suomi Visa V   Jakeman Philip P   Campo Leticia L   Coussios Constantin C   Carlisle Robert R  

Scientific reports 20210223 1


Triggered release and targeted drug delivery of potent anti-cancer agents using hyperthermia-mediated focused-ultrasound (FUS) is gaining momentum in the clinical setting. In early phase studies, tissue biopsy samples may be harvested to assess drug delivery efficacy and demonstrate lack of instantaneous cell death due to FUS exposure. We present an optimised tissue cell recovery method and a cell viability assay, compatible with intra-cellular doxorubicin. Flow cytometry was used to determine l  ...[more]

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