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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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Journal ArticleDOI
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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DNA-Demethylating Agents Target Colorectal Cancer Cells by Inducing Viral Mimicry by Endogenous Transcripts.
David Roulois,Helen Loo Yau,Helen Loo Yau,Rajat Singhania,Yadong Wang,Arnavaz Danesh,Shu Yi Shen,Han Han,Gangning Liang,Peter A. Jones,Trevor J. Pugh,Trevor J. Pugh,Catherine A. O’Brien,Catherine A. O’Brien,Catherine A. O’Brien,Daniel D. De Carvalho,Daniel D. De Carvalho +16 more
TL;DR: It is demonstrated that low-dose 5-AZA-CdR targets colorectal cancer-initiating cells (CICs) by inducing viral mimicry, and the MDA5/MAVS/IRF7 pathway is highlighted as a potentially druggable target against CICs.
Journal ArticleDOI
Variable Clonal Repopulation Dynamics Influence Chemotherapy Response in Colorectal Cancer
Antonija Kreso,Antonija Kreso,Catherine A. O’Brien,Catherine A. O’Brien,Peter van Galen,Olga I. Gan,Faiyaz Notta,Faiyaz Notta,Andrew M.K. Brown,Karen Ng,Jing Ma,Erno Wienholds,Cyrille F. Dunant,Aaron Pollett,Steven Gallinger,John Douglas Mcpherson,Charles G. Mullighan,Darryl Shibata,John E. Dick,John E. Dick +19 more
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.
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Sensitive tumour detection and classification using plasma cell-free DNA methylomes
Shu Yi Shen,Rajat Singhania,Gordon Fehringer,Ankur Chakravarthy,Michael H.A. Roehrl,Michael H.A. Roehrl,Michael H.A. Roehrl,Dianne Chadwick,Philip C. Zuzarte,Ayelet Borgida,Ting Ting Wang,Ting Ting Wang,Tiantian Li,Olena Kis,Zhen Zhao,Anna Spreafico,Tiago Medina,Yadon Wang,David Roulois,David Roulois,Ilias Ettayebi,Ilias Ettayebi,Zhuo Chen,Signy Chow,Tracy Murphy,Andrea Arruda,Grainne M. O'Kane,Jessica Liu,Mark Mansour,John Douglas Mcpherson,Catherine A. O’Brien,Natasha B. Leighl,Philippe L. Bedard,Neil E. Fleshner,Geoffrey Liu,Geoffrey Liu,Mark D. Minden,Steven Gallinger,Steven Gallinger,Anna Goldenberg,Trevor J. Pugh,Trevor J. Pugh,Michael M. Hoffman,Michael M. Hoffman,Scott V. Bratman,Scott V. Bratman,Rayjean J. Hung,Rayjean J. Hung,Daniel D. De Carvalho,Daniel D. De Carvalho +49 more
TL;DR: An immunoprecipitation-based protocol is developed to analyse DNA methylation in small quantities of circulating cell-free DNA, and can detect and classify cancers in plasma samples from several tumour types.
Journal ArticleDOI
Self-renewal as a therapeutic target in human colorectal cancer
Antonija Kreso,Peter van Galen,Nicholas M. Pedley,Evelyne Lima-Fernandes,Catherine Frelin,Thomas W. Davis,Liangxian Cao,Ramil Baiazitov,Wu Du,Nadiya Sydorenko,Young-Choon Moon,Lianne Gibson,Yadong Wang,Cherry Leung,Norman N. Iscove,Cheryl H. Arrowsmith,Eva Szentgyorgyi,Steven Gallinger,John E. Dick,Catherine A. O’Brien +19 more
TL;DR: It is demonstrated that tumor formation and, more specifically, human colorectal CIC function are dependent on the canonical self-renewal regulator BMI-1.