Churchhouse, Antonia M.D. and Billard, Caroline V. and Suzuki, Toshiyasu and Pohl, Sebastian O.G. and Donnelly, Kevin and Nixon, Colin and Arends, Mark J. and Din, Shahida and Kirkwood, Kathryn and Marques Junior, Jair and Von Kriegsheim, Alexander and Coffelt, Seth B. and Myant, Kevin B. (2024) Loss of DOCK2 potentiates Inflammatory Bowel Disease-associated colorectal cancer via immune dysfunction and IFNγ induction of IDO1 expression. Oncogene, 43 (42). pp. 3094-3107. ISSN 0950-9232
AI Summary:
The study investigates the role of DOCK2, a gene mutated in 10% of IBD-CRC cases, in tumourigenesis. The results show that whole-body loss of DOCK2 increases tumourigenesis via immune dysregulation.AI Topics:
Inflammatory Bowel Disease-associated colorectal cancer (IBD-CRC) is a known and serious complication of Inflammatory Bowel Disease (IBD) affecting the colon. However, relatively little is known about the pathogenesis of IBD-associated colorectal cancer in comparison with its sporadic cancer counterpart. Here, we investigated the function of Dock2, a gene mutated in ~10% of IBD-associated colorectal cancers that encodes a guanine nucleotide exchange factor (GEF). Using a genetically engineered mouse model of IBD-CRC, we found that whole body loss of Dock2 increases tumourigenesis via immune dysregulation. Dock2-deficient tumours displayed increased levels of IFNγ-associated genes, including the tryptophan metabolising, immune modulatory enzyme, IDO1, when compared to Dock2-proficient tumours. This phenotype was driven by increased IFNγ-production in T cell populations, which infiltrated Dock2-deficient tumours, promoting IDO1 expression in tumour epithelial cells. We show that IDO1 inhibition delays tumourigenesis in Dock2 knockout mice, and we confirm that this pathway is conserved across species as IDO1 expression is elevated in human IBD-CRC and in sporadic CRC cases with mutated DOCK2. Together, these data demonstrate a previously unidentified tumour suppressive role of DOCK2 that limits IFNγ-induced IDO1 expression and cancer progression, opening potential new avenues for therapeutic intervention.
Churchhouse, Antonia M.D.
Author
Churchhouse, Antonia M.D. and Billard, Caroline V. and Suzuki, Toshiyasu and Pohl, Sebastian O.G. and Donnelly, Kevin and Nixon, Colin and Arends, Mark J. and Din, Shahida and Kirkwood, Kathryn and Marques Junior, Jair and Von Kriegsheim, Alexander and Coffelt, Seth B. and Myant, Kevin B. (2024) Loss of DOCK2 potentiates Inflammatory Bowel Disease-associated colorectal cancer via immune dysfunction and IFNγ induction of IDO1 expression. Oncogene, 43 (42). pp. 3094-3107. ISSN 0950-9232
See full publications listBillard, Caroline V.
Author
Churchhouse, Antonia M.D. and Billard, Caroline V. and Suzuki, Toshiyasu and Pohl, Sebastian O.G. and Donnelly, Kevin and Nixon, Colin and Arends, Mark J. and Din, Shahida and Kirkwood, Kathryn and Marques Junior, Jair and Von Kriegsheim, Alexander and Coffelt, Seth B. and Myant, Kevin B. (2024) Loss of DOCK2 potentiates Inflammatory Bowel Disease-associated colorectal cancer via immune dysfunction and IFNγ induction of IDO1 expression. Oncogene, 43 (42). pp. 3094-3107. ISSN 0950-9232
See full publications listSuzuki, Toshiyasu
Author
Churchhouse, Antonia M.D. and Billard, Caroline V. and Suzuki, Toshiyasu and Pohl, Sebastian O.G. and Donnelly, Kevin and Nixon, Colin and Arends, Mark J. and Din, Shahida and Kirkwood, Kathryn and Marques Junior, Jair and Von Kriegsheim, Alexander and Coffelt, Seth B. and Myant, Kevin B. (2024) Loss of DOCK2 potentiates Inflammatory Bowel Disease-associated colorectal cancer via immune dysfunction and IFNγ induction of IDO1 expression. Oncogene, 43 (42). pp. 3094-3107. ISSN 0950-9232
See full publications listPohl, Sebastian O.G.
Author
Churchhouse, Antonia M.D. and Billard, Caroline V. and Suzuki, Toshiyasu and Pohl, Sebastian O.G. and Donnelly, Kevin and Nixon, Colin and Arends, Mark J. and Din, Shahida and Kirkwood, Kathryn and Marques Junior, Jair and Von Kriegsheim, Alexander and Coffelt, Seth B. and Myant, Kevin B. (2024) Loss of DOCK2 potentiates Inflammatory Bowel Disease-associated colorectal cancer via immune dysfunction and IFNγ induction of IDO1 expression. Oncogene, 43 (42). pp. 3094-3107. ISSN 0950-9232
See full publications listDonnelly, Kevin
Author
Churchhouse, Antonia M.D. and Billard, Caroline V. and Suzuki, Toshiyasu and Pohl, Sebastian O.G. and Donnelly, Kevin and Nixon, Colin and Arends, Mark J. and Din, Shahida and Kirkwood, Kathryn and Marques Junior, Jair and Von Kriegsheim, Alexander and Coffelt, Seth B. and Myant, Kevin B. (2024) Loss of DOCK2 potentiates Inflammatory Bowel Disease-associated colorectal cancer via immune dysfunction and IFNγ induction of IDO1 expression. Oncogene, 43 (42). pp. 3094-3107. ISSN 0950-9232
See full publications listNixon, Colin
Author
Elbassioni, Ali Ali Mohamed and Raheem, Anmar A. and Song, Jian and Johnston, Alexander S. and Trivett, Cara and Lin, Hong and Zhang, Haobo and Bradley, Ashley and Higgins, Erin and Mooney, Leanne and Koay, Yen Chin and O'Toole, Dylan and Herzyk, Pawel and Nixon, Colin and Blyth, Karen and O'Sullivan, John F. and Lang, Ninian N. and Berry, Colin and Braun, Thomas and Schiattarella, Gabriele G. and Giacca, Mauro and McBride, Martin W. and Nicklin, Stuart A. and Cameron, Ewan R. and Loughrey, Christopher M. and MacDonald, Eilidh A. (2025) Targeting Runx1 protects against heart failure with preserved ejection fraction. bioRxiv.
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Churchhouse, Antonia M.D. and Billard, Caroline V. and Suzuki, Toshiyasu and Pohl, Sebastian O.G. and Donnelly, Kevin and Nixon, Colin and Arends, Mark J. and Din, Shahida and Kirkwood, Kathryn and Marques Junior, Jair and Von Kriegsheim, Alexander and Coffelt, Seth B. and Myant, Kevin B. (2024) Loss of DOCK2 potentiates Inflammatory Bowel Disease-associated colorectal cancer via immune dysfunction and IFNγ induction of IDO1 expression. Oncogene, 43 (42). pp. 3094-3107. ISSN 0950-9232
See full publications listArends, Mark J.
Author
Churchhouse, Antonia M.D. and Billard, Caroline V. and Suzuki, Toshiyasu and Pohl, Sebastian O.G. and Donnelly, Kevin and Nixon, Colin and Arends, Mark J. and Din, Shahida and Kirkwood, Kathryn and Marques Junior, Jair and Von Kriegsheim, Alexander and Coffelt, Seth B. and Myant, Kevin B. (2024) Loss of DOCK2 potentiates Inflammatory Bowel Disease-associated colorectal cancer via immune dysfunction and IFNγ induction of IDO1 expression. Oncogene, 43 (42). pp. 3094-3107. ISSN 0950-9232
See full publications listDin, Shahida
Author
Churchhouse, Antonia M.D. and Billard, Caroline V. and Suzuki, Toshiyasu and Pohl, Sebastian O.G. and Donnelly, Kevin and Nixon, Colin and Arends, Mark J. and Din, Shahida and Kirkwood, Kathryn and Marques Junior, Jair and Von Kriegsheim, Alexander and Coffelt, Seth B. and Myant, Kevin B. (2024) Loss of DOCK2 potentiates Inflammatory Bowel Disease-associated colorectal cancer via immune dysfunction and IFNγ induction of IDO1 expression. Oncogene, 43 (42). pp. 3094-3107. ISSN 0950-9232
See full publications listKirkwood, Kathryn
Author
Churchhouse, Antonia M.D. and Billard, Caroline V. and Suzuki, Toshiyasu and Pohl, Sebastian O.G. and Donnelly, Kevin and Nixon, Colin and Arends, Mark J. and Din, Shahida and Kirkwood, Kathryn and Marques Junior, Jair and Von Kriegsheim, Alexander and Coffelt, Seth B. and Myant, Kevin B. (2024) Loss of DOCK2 potentiates Inflammatory Bowel Disease-associated colorectal cancer via immune dysfunction and IFNγ induction of IDO1 expression. Oncogene, 43 (42). pp. 3094-3107. ISSN 0950-9232
See full publications listMarques Junior, Jair
Author
Churchhouse, Antonia M.D. and Billard, Caroline V. and Suzuki, Toshiyasu and Pohl, Sebastian O.G. and Donnelly, Kevin and Nixon, Colin and Arends, Mark J. and Din, Shahida and Kirkwood, Kathryn and Marques Junior, Jair and Von Kriegsheim, Alexander and Coffelt, Seth B. and Myant, Kevin B. (2024) Loss of DOCK2 potentiates Inflammatory Bowel Disease-associated colorectal cancer via immune dysfunction and IFNγ induction of IDO1 expression. Oncogene, 43 (42). pp. 3094-3107. ISSN 0950-9232
See full publications listVon Kriegsheim, Alexander
Author
Churchhouse, Antonia M.D. and Billard, Caroline V. and Suzuki, Toshiyasu and Pohl, Sebastian O.G. and Donnelly, Kevin and Nixon, Colin and Arends, Mark J. and Din, Shahida and Kirkwood, Kathryn and Marques Junior, Jair and Von Kriegsheim, Alexander and Coffelt, Seth B. and Myant, Kevin B. (2024) Loss of DOCK2 potentiates Inflammatory Bowel Disease-associated colorectal cancer via immune dysfunction and IFNγ induction of IDO1 expression. Oncogene, 43 (42). pp. 3094-3107. ISSN 0950-9232
See full publications listCoffelt, Seth B.
Author
Churchhouse, Antonia M.D. and Billard, Caroline V. and Suzuki, Toshiyasu and Pohl, Sebastian O.G. and Donnelly, Kevin and Nixon, Colin and Arends, Mark J. and Din, Shahida and Kirkwood, Kathryn and Marques Junior, Jair and Von Kriegsheim, Alexander and Coffelt, Seth B. and Myant, Kevin B. (2024) Loss of DOCK2 potentiates Inflammatory Bowel Disease-associated colorectal cancer via immune dysfunction and IFNγ induction of IDO1 expression. Oncogene, 43 (42). pp. 3094-3107. ISSN 0950-9232
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See full publications listMyant, Kevin B.
Author
Churchhouse, Antonia M.D. and Billard, Caroline V. and Suzuki, Toshiyasu and Pohl, Sebastian O.G. and Donnelly, Kevin and Nixon, Colin and Arends, Mark J. and Din, Shahida and Kirkwood, Kathryn and Marques Junior, Jair and Von Kriegsheim, Alexander and Coffelt, Seth B. and Myant, Kevin B. (2024) Loss of DOCK2 potentiates Inflammatory Bowel Disease-associated colorectal cancer via immune dysfunction and IFNγ induction of IDO1 expression. Oncogene, 43 (42). pp. 3094-3107. ISSN 0950-9232
See full publications listAvailable under License Creative Commons Attribution.
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