UPA Perpustakaan Universitas Jember

Synergistic anticancer effect of panobinostat and topoisomerase inhibitors through ROS generation and intrinsic apoptotic pathway induction in cervical cancer cells

Lubna Wasim - Personal Name
Madhu Chopra - Personal Name

Purpose Various combinations of drugs may be effective in the treatment of different types of cancer. Previously, we have shown
that combinations of the histone deacetylase inhibitor panobinostat and the topoisomerase inhibitors topotecan or etoposide act
synergistically, but the underlying mode of action has remained unknown. Here, we aimed at uncovering the mechanisms
underlying this synergism.
Methods The effects of (combinations of) panobinostat and topotecan or etoposide on cervical cancer-derived HeLa and SiHa cells
were assessed using morphological evaluations, scratch wound healing assays, cell cycle analyses, AO/EB staining assays, Annexin
V/PI staining assays, reactive oxygen species (ROS) and mitochondrial membrane potential measurements and Western blotting.
Results We found that combinations of panobinostat and the topoisomerase inhibitors topotecan or etoposide synergistically
enhanced the induction of apoptosis in both HeLa and SiHa cells. This enhanced apoptosis induction was found to be mediated
through increased ROS production and induction of the mitochondrial apoptotic pathway. We also found that the combination
treatment resulted in inhibition of the PI3K/AKTand NF-κB pro-survival pathways and in activation of the ERK pathway, which
is associated with intrinsic apoptosis.
Conclusions From our data we conclude that combinations of panobinostat and the topoisomerase inhibitors topotecan or etoposide
provoke strong cell death responses in cervical cancer-derived cells via induction of the intrinsic apoptotic pathway. Since this drug
combination may potentially be effective in the treatment of cervical cancer, further preclinical investigations are warranted.

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Combination therapy
Panobinostat
Topoisomerase inhibitors
ROS
Apoptosis
AKT/NF-κB
ERK

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Synergistic anticancer effect of panobinostat and topoisomerase inhibitors through ROS generation and intrinsic apoptotic pathway induction in cervical cancer cells

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NPP. 3509212D1000001

Synergistic anticancer effect of panobinostat and topoisomerase inhibitors through ROS generation and intrinsic apoptotic pathway induction in cervical cancer cells

Lubna Wasim - Personal NameMadhu Chopra - Personal Name

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ISBN/ISSN

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Content Type

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Statement of Responsibility

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Lubna Wasim - Personal Name
Madhu Chopra - Personal Name