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Catherine A. O’Brien

Researcher at University Health Network

Publications -  50
Citations -  8842

Catherine A. O’Brien is an academic researcher from University Health Network. The author has contributed to research in topics: Colorectal cancer & Cancer. The author has an hindex of 24, co-authored 49 publications receiving 7606 citations. Previous affiliations of Catherine A. O’Brien include Princess Margaret Cancer Centre & Toronto General Hospital.

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A human colon cancer cell capable of initiating tumour growth in immunodeficient mice

TL;DR: The identification of colon cancer stem cells that are distinct from the bulk tumour cells provides strong support for the hierarchical organization of human colon cancer, and their existence suggests that for therapeutic strategies to be effective, they must target the cancer stem Cells.
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Variable Clonal Repopulation Dynamics Influence Chemotherapy Response in Colorectal Cancer

TL;DR: Combining DNA copy number alteration (CNA) profiling, sequencing, and lentiviral lineage tracking, this work followed the repopulation dynamics of 150 single lentivirus-marked lineages from 10 human colorectal cancers through serial xenograft passages in mice, showing that clones remained stable upon serial transplantation and Chemotherapy promoted the dominance of previously minor or dormant lineages.