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Molecular Characterization of Very Small Nuclear Circulating Tumor Cells: A Putative Biomarker for Visceral Metastasis in Prostate Cancer

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Technical Report,30 Sep 2016,29 Sep 2017

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Cedars Sinai Medical Center Los Angeles United States

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Metastatic, castration-resistant prostate cancer mCRPC may exhibit varied clinical courses.Some mCRPC patients will develop metastasis beyond the bone and lymph nodes, including theliver, lungs, and adrenal glands. These conditions are termed visceral metastases VM.Patients with VM have significantly poorer overall survival than patients with non-VM, astheir clinical course involves rapid deterioration from organ failure. Certain CRPCtreatments have been shown to push the progression of the cancer to its more aggressive VMform. This highlights the importance of developing a means of detecting and predicting cancerprogression to the viscera. Using the NanoVelcro Chip designed to capture circulating tumorcells CTCs, we identified a morphologically unique subgroup of these cells, which we termedvery-small-nuclear CTCs vsnCTCs. We found that these vsnCTCs appear in patients with VM andbegin emerging before the disease progresses to VM. Thus we hypothesize that vsnCTCs areassociated with the development of VM and are biologically distinct from non-vsnCTCs, whichlead to a different clinical course. We aim to analyze the association between vsnCTCs andVM, as these cells could play a key role in detection VM. Additionally, we aim to compare thegene expression of vsnCTCs and non-vsnCTCs to gain greater insight into the biology of VM.

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  • Medicine and Medical Research

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