Focal Adhesion Kinase Is Required for Intestinal Regeneration and Tumorigenesis Downstream of Wnt/c-Myc Signaling

The intestinal epithelium has a remarkable capacity to regenerate after injury and DNA damage. Here, we show that the integrin effector protein Focal Adhesion Kinase (FAK) is dispensable for normal intestinal homeostasis and DNA damage signaling, but is essential for intestinal regeneration followin...

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Veröffentlicht in:Developmental cell 2010-08, Vol.19 (2), p.259-269
Hauptverfasser: Ashton, Gabrielle H., Morton, Jennifer P., Myant, Kevin, Phesse, Toby J., Ridgway, Rachel A., Marsh, Victoria, Wilkins, Julie A., Athineos, Dimitris, Muncan, Vanesa, Kemp, Richard, Neufeld, Kristi, Clevers, Hans, Brunton, Valerie, Winton, Douglas J., Wang, Xiaoyan, Sears, Rosalie C., Clarke, Alan R., Frame, Margaret C., Sansom, Owen J.
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container_end_page 269
container_issue 2
container_start_page 259
container_title Developmental cell
container_volume 19
creator Ashton, Gabrielle H.
Morton, Jennifer P.
Myant, Kevin
Phesse, Toby J.
Ridgway, Rachel A.
Marsh, Victoria
Wilkins, Julie A.
Athineos, Dimitris
Muncan, Vanesa
Kemp, Richard
Neufeld, Kristi
Clevers, Hans
Brunton, Valerie
Winton, Douglas J.
Wang, Xiaoyan
Sears, Rosalie C.
Clarke, Alan R.
Frame, Margaret C.
Sansom, Owen J.
description The intestinal epithelium has a remarkable capacity to regenerate after injury and DNA damage. Here, we show that the integrin effector protein Focal Adhesion Kinase (FAK) is dispensable for normal intestinal homeostasis and DNA damage signaling, but is essential for intestinal regeneration following DNA damage. Given Wnt/c-Myc signaling is activated following intestinal regeneration, we investigated the functional importance of FAK following deletion of the Apc tumor suppressor protein within the intestinal epithelium. Following Apc loss, FAK expression increased in a c-Myc-dependent manner. Codeletion of Apc and Fak strongly reduced proliferation normally induced following Apc loss, and this was associated with reduced levels of phospho-Akt and suppression of intestinal tumorigenesis in Apc heterozygous mice. Thus, FAK is required downstream of Wnt Signaling, for Akt/mTOR activation, intestinal regeneration, and tumorigenesis. Importantly, this work suggests that FAK inhibitors may suppress tumorigenesis in patients at high risk of developing colorectal cancer. [Display omitted] [Display omitted] ► Wnt/Myc signaling promotes FAK expression in the intestine ► FAK contributes to Wnt/Myc-activated Akt/mTOR signaling ► FAK is essential for Wnt/Myc-activated intestinal regeneration and tumorigenesis
doi_str_mv 10.1016/j.devcel.2010.07.015
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Here, we show that the integrin effector protein Focal Adhesion Kinase (FAK) is dispensable for normal intestinal homeostasis and DNA damage signaling, but is essential for intestinal regeneration following DNA damage. Given Wnt/c-Myc signaling is activated following intestinal regeneration, we investigated the functional importance of FAK following deletion of the Apc tumor suppressor protein within the intestinal epithelium. Following Apc loss, FAK expression increased in a c-Myc-dependent manner. Codeletion of Apc and Fak strongly reduced proliferation normally induced following Apc loss, and this was associated with reduced levels of phospho-Akt and suppression of intestinal tumorigenesis in Apc heterozygous mice. Thus, FAK is required downstream of Wnt Signaling, for Akt/mTOR activation, intestinal regeneration, and tumorigenesis. Importantly, this work suggests that FAK inhibitors may suppress tumorigenesis in patients at high risk of developing colorectal cancer. [Display omitted] [Display omitted] ► Wnt/Myc signaling promotes FAK expression in the intestine ► FAK contributes to Wnt/Myc-activated Akt/mTOR signaling ► FAK is essential for Wnt/Myc-activated intestinal regeneration and tumorigenesis</description><identifier>ISSN: 1534-5807</identifier><identifier>ISSN: 1878-1551</identifier><identifier>EISSN: 1878-1551</identifier><identifier>DOI: 10.1016/j.devcel.2010.07.015</identifier><identifier>PMID: 20708588</identifier><language>eng</language><publisher>Cambridge, MA: Elsevier Inc</publisher><subject>Animals ; Biological and medical sciences ; Cell differentiation, maturation, development, hematopoiesis ; Cell physiology ; Cell transformation and carcinogenesis. Action of oncogenes and antioncogenes ; CELLCYCLE ; Focal Adhesion Protein-Tyrosine Kinases - genetics ; Focal Adhesion Protein-Tyrosine Kinases - metabolism ; Fundamental and applied biological sciences. Psychology ; Humans ; HUMDISEASE ; Intestinal Neoplasms - metabolism ; Intestinal Neoplasms - pathology ; Intestines - pathology ; Intestines - physiology ; Intracellular Signaling Peptides and Proteins - genetics ; Intracellular Signaling Peptides and Proteins - metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Molecular and cellular biology ; Protein Serine-Threonine Kinases - genetics ; Protein Serine-Threonine Kinases - metabolism ; Proto-Oncogene Proteins c-akt - genetics ; Proto-Oncogene Proteins c-akt - metabolism ; Proto-Oncogene Proteins c-myc - genetics ; Proto-Oncogene Proteins c-myc - metabolism ; Regeneration ; Signal transduction ; Signal Transduction - physiology ; TOR Serine-Threonine Kinases ; Wnt Proteins - genetics ; Wnt Proteins - metabolism</subject><ispartof>Developmental cell, 2010-08, Vol.19 (2), p.259-269</ispartof><rights>2010 Elsevier Inc.</rights><rights>2015 INIST-CNRS</rights><rights>2010 Elsevier Inc. 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Here, we show that the integrin effector protein Focal Adhesion Kinase (FAK) is dispensable for normal intestinal homeostasis and DNA damage signaling, but is essential for intestinal regeneration following DNA damage. Given Wnt/c-Myc signaling is activated following intestinal regeneration, we investigated the functional importance of FAK following deletion of the Apc tumor suppressor protein within the intestinal epithelium. Following Apc loss, FAK expression increased in a c-Myc-dependent manner. Codeletion of Apc and Fak strongly reduced proliferation normally induced following Apc loss, and this was associated with reduced levels of phospho-Akt and suppression of intestinal tumorigenesis in Apc heterozygous mice. Thus, FAK is required downstream of Wnt Signaling, for Akt/mTOR activation, intestinal regeneration, and tumorigenesis. Importantly, this work suggests that FAK inhibitors may suppress tumorigenesis in patients at high risk of developing colorectal cancer. 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Here, we show that the integrin effector protein Focal Adhesion Kinase (FAK) is dispensable for normal intestinal homeostasis and DNA damage signaling, but is essential for intestinal regeneration following DNA damage. Given Wnt/c-Myc signaling is activated following intestinal regeneration, we investigated the functional importance of FAK following deletion of the Apc tumor suppressor protein within the intestinal epithelium. Following Apc loss, FAK expression increased in a c-Myc-dependent manner. Codeletion of Apc and Fak strongly reduced proliferation normally induced following Apc loss, and this was associated with reduced levels of phospho-Akt and suppression of intestinal tumorigenesis in Apc heterozygous mice. Thus, FAK is required downstream of Wnt Signaling, for Akt/mTOR activation, intestinal regeneration, and tumorigenesis. Importantly, this work suggests that FAK inhibitors may suppress tumorigenesis in patients at high risk of developing colorectal cancer. [Display omitted] [Display omitted] ► Wnt/Myc signaling promotes FAK expression in the intestine ► FAK contributes to Wnt/Myc-activated Akt/mTOR signaling ► FAK is essential for Wnt/Myc-activated intestinal regeneration and tumorigenesis</abstract><cop>Cambridge, MA</cop><pub>Elsevier Inc</pub><pmid>20708588</pmid><doi>10.1016/j.devcel.2010.07.015</doi><tpages>11</tpages><oa>free_for_read</oa></addata></record>
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subjects Animals
Biological and medical sciences
Cell differentiation, maturation, development, hematopoiesis
Cell physiology
Cell transformation and carcinogenesis. Action of oncogenes and antioncogenes
CELLCYCLE
Focal Adhesion Protein-Tyrosine Kinases - genetics
Focal Adhesion Protein-Tyrosine Kinases - metabolism
Fundamental and applied biological sciences. Psychology
Humans
HUMDISEASE
Intestinal Neoplasms - metabolism
Intestinal Neoplasms - pathology
Intestines - pathology
Intestines - physiology
Intracellular Signaling Peptides and Proteins - genetics
Intracellular Signaling Peptides and Proteins - metabolism
Male
Mice
Mice, Inbred C57BL
Molecular and cellular biology
Protein Serine-Threonine Kinases - genetics
Protein Serine-Threonine Kinases - metabolism
Proto-Oncogene Proteins c-akt - genetics
Proto-Oncogene Proteins c-akt - metabolism
Proto-Oncogene Proteins c-myc - genetics
Proto-Oncogene Proteins c-myc - metabolism
Regeneration
Signal transduction
Signal Transduction - physiology
TOR Serine-Threonine Kinases
Wnt Proteins - genetics
Wnt Proteins - metabolism
title Focal Adhesion Kinase Is Required for Intestinal Regeneration and Tumorigenesis Downstream of Wnt/c-Myc Signaling
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