Loss of ATOH1 in Pit Cell Drives Stemness and Progression of Gastric Adenocarcinoma by Activating AKT/mTOR Signaling through GAS1

Abstract Gastric cancer stem cells (GCSCs) are self‐renewing tumor cells that govern chemoresistance in gastric adenocarcinoma (GAC), whereas their regulatory mechanisms remain elusive. Here, the study aims to elucidate the role of ATOH1 in the maintenance of GCSCs. The preclinical model and GAC sam...

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Main Authors: Qing Zhong, Hua‐Gen Wang, Ji‐Hong Yang, Ru‐Hong Tu, An‐Yao Li, Gui‐Rong Zeng, Qiao‐Ling Zheng, Zhi‐ Yu Liu, Zhi‐Xin Shang‐Guan, Xiao‐ Bo Huang, Qiang Huang, Yi‐Fan Li, Hua‐Long Zheng, Guang‐Tan Lin, Ze‐Ning Huang, Kai‐Xiang Xu, Wen‐Wu Qiu, Mei‐Chen Jiang, Ya‐Jun Zhao, Jian‐Xian Lin, Zhi‐Hong Huang, Jing‐Min Huang, Ping Li, Jian‐Wei Xie, Chao‐Hui Zheng, Qi‐Yue Chen, Chang‐Ming Huang
Format: Article
Language:English
Published: Wiley 2023-11-01
Series:Advanced Science
Subjects:
Online Access:https://doi.org/10.1002/advs.202301977
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author Qing Zhong
Hua‐Gen Wang
Ji‐Hong Yang
Ru‐Hong Tu
An‐Yao Li
Gui‐Rong Zeng
Qiao‐Ling Zheng
Zhi‐ Yu Liu
Zhi‐Xin Shang‐Guan
Xiao‐ Bo Huang
Qiang Huang
Yi‐Fan Li
Hua‐Long Zheng
Guang‐Tan Lin
Ze‐Ning Huang
Kai‐Xiang Xu
Wen‐Wu Qiu
Mei‐Chen Jiang
Ya‐Jun Zhao
Jian‐Xian Lin
Zhi‐Hong Huang
Jing‐Min Huang
Ping Li
Jian‐Wei Xie
Chao‐Hui Zheng
Qi‐Yue Chen
Chang‐Ming Huang
author_facet Qing Zhong
Hua‐Gen Wang
Ji‐Hong Yang
Ru‐Hong Tu
An‐Yao Li
Gui‐Rong Zeng
Qiao‐Ling Zheng
Zhi‐ Yu Liu
Zhi‐Xin Shang‐Guan
Xiao‐ Bo Huang
Qiang Huang
Yi‐Fan Li
Hua‐Long Zheng
Guang‐Tan Lin
Ze‐Ning Huang
Kai‐Xiang Xu
Wen‐Wu Qiu
Mei‐Chen Jiang
Ya‐Jun Zhao
Jian‐Xian Lin
Zhi‐Hong Huang
Jing‐Min Huang
Ping Li
Jian‐Wei Xie
Chao‐Hui Zheng
Qi‐Yue Chen
Chang‐Ming Huang
author_sort Qing Zhong
collection DOAJ
description Abstract Gastric cancer stem cells (GCSCs) are self‐renewing tumor cells that govern chemoresistance in gastric adenocarcinoma (GAC), whereas their regulatory mechanisms remain elusive. Here, the study aims to elucidate the role of ATOH1 in the maintenance of GCSCs. The preclinical model and GAC sample analysis indicate that ATOH1 deficiency is correlated with poor GAC prognosis and chemoresistance. ScRNA‐seq reveals that ATOH1 is downregulated in the pit cells of GAC compared with those in paracarcinoma samples. Lineage tracing reveals that Atoh1 deletion strongly confers pit cell stemness. ATOH1 depletion significantly accelerates cancer stemness and chemoresistance in Tff1‐CreERT2; Rosa26Tdtomato and Tff1‐CreERT2; Apcfl/fl; p53fl/fl (TcPP) mouse models and organoids. ATOH1 deficiency downregulates growth arrest‐specific protein 1 (GAS1) by suppressing GAS1 promoter transcription. GAS1 forms a complex with RET, which inhibits Tyr1062 phosphorylation, and consequently activates the RET/AKT/mTOR signaling pathway by ATOH1 deficiency. Combining chemotherapy with drugs targeting AKT/mTOR signaling can overcome ATOH1 deficiency‐induced chemoresistance. Moreover, it is confirmed that abnormal DNA hypermethylation induces ATOH1 deficiency. Taken together, the results demonstrate that ATOH1 loss promotes cancer stemness through the ATOH1/GAS1/RET/AKT/mTOR signaling pathway in GAC, thus providing a potential therapeutic strategy for AKT/mTOR inhibitors in GAC patients with ATOH1 deficiency.
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spelling doaj.art-d5c450371d7249f382f7578885a3dc872023-11-15T05:46:36ZengWileyAdvanced Science2198-38442023-11-011032n/an/a10.1002/advs.202301977Loss of ATOH1 in Pit Cell Drives Stemness and Progression of Gastric Adenocarcinoma by Activating AKT/mTOR Signaling through GAS1Qing Zhong0Hua‐Gen Wang1Ji‐Hong Yang2Ru‐Hong Tu3An‐Yao Li4Gui‐Rong Zeng5Qiao‐Ling Zheng6Zhi‐ Yu Liu7Zhi‐Xin Shang‐Guan8Xiao‐ Bo Huang9Qiang Huang10Yi‐Fan Li11Hua‐Long Zheng12Guang‐Tan Lin13Ze‐Ning Huang14Kai‐Xiang Xu15Wen‐Wu Qiu16Mei‐Chen Jiang17Ya‐Jun Zhao18Jian‐Xian Lin19Zhi‐Hong Huang20Jing‐Min Huang21Ping Li22Jian‐Wei Xie23Chao‐Hui Zheng24Qi‐Yue Chen25Chang‐Ming Huang26Department of Gastric Surgery Fujian Medical University Union Hospital Fuzhou 350001 P. R. ChinaDepartment of Gastric Surgery Fujian Medical University Union Hospital Fuzhou 350001 P. R. ChinaBoYu Intelligent Health Innovation Laboratory Hangzhou 311100 P. R. ChinaDepartment of Gastric Surgery Fujian Medical University Union Hospital Fuzhou 350001 P. R. ChinaCollege of Pharmaceutical Sciences Zhejiang University Hangzhou 310058 P. R. ChinaDepartment of Pathology Fujian Medical University Union Hospital Fuzhou 350001 P. R. ChinaDiagnostic Pathology Center Fujian Medical University Fuzhou 350001 P. R. ChinaDepartment of Gastric Surgery Fujian Medical University Union Hospital Fuzhou 350001 P. R. ChinaDepartment of Gastric Surgery Fujian Medical University Union Hospital Fuzhou 350001 P. R. ChinaDepartment of Gastric Surgery Fujian Medical University Union Hospital Fuzhou 350001 P. R. ChinaDepartment of Gastric Surgery Fujian Medical University Union Hospital Fuzhou 350001 P. R. ChinaDepartment of Gastric Surgery Fujian Medical University Union Hospital Fuzhou 350001 P. R. ChinaDepartment of Gastric Surgery Fujian Medical University Union Hospital Fuzhou 350001 P. R. ChinaDepartment of Gastric Surgery Fujian Medical University Union Hospital Fuzhou 350001 P. R. ChinaDepartment of Gastric Surgery Fujian Medical University Union Hospital Fuzhou 350001 P. R. ChinaDepartment of Gastric Surgery Fujian Medical University Union Hospital Fuzhou 350001 P. R. ChinaDepartment of Gastric Surgery Fujian Medical University Union Hospital Fuzhou 350001 P. R. ChinaDiagnostic Pathology Center Fujian Medical University Fuzhou 350001 P. R. ChinaDepartment of Gastrointestinal Surgery The First Affiliated Hospital of the University of Science and Technology of China Division of Life Sciences and Medicine University of Science and Technology of China Hefei 230001 P. R. ChinaDepartment of Gastric Surgery Fujian Medical University Union Hospital Fuzhou 350001 P. R. ChinaPublic Technology Service Center Fujian Medical University Fuzhou 350122 P. R. ChinaDepartment of General Surgery Qinghai Provincial People's Hospital Xining 810000 P. R. ChinaDepartment of Gastric Surgery Fujian Medical University Union Hospital Fuzhou 350001 P. R. ChinaDepartment of Gastric Surgery Fujian Medical University Union Hospital Fuzhou 350001 P. R. ChinaDepartment of Gastric Surgery Fujian Medical University Union Hospital Fuzhou 350001 P. R. ChinaDepartment of Gastric Surgery Fujian Medical University Union Hospital Fuzhou 350001 P. R. ChinaDepartment of Gastric Surgery Fujian Medical University Union Hospital Fuzhou 350001 P. R. ChinaAbstract Gastric cancer stem cells (GCSCs) are self‐renewing tumor cells that govern chemoresistance in gastric adenocarcinoma (GAC), whereas their regulatory mechanisms remain elusive. Here, the study aims to elucidate the role of ATOH1 in the maintenance of GCSCs. The preclinical model and GAC sample analysis indicate that ATOH1 deficiency is correlated with poor GAC prognosis and chemoresistance. ScRNA‐seq reveals that ATOH1 is downregulated in the pit cells of GAC compared with those in paracarcinoma samples. Lineage tracing reveals that Atoh1 deletion strongly confers pit cell stemness. ATOH1 depletion significantly accelerates cancer stemness and chemoresistance in Tff1‐CreERT2; Rosa26Tdtomato and Tff1‐CreERT2; Apcfl/fl; p53fl/fl (TcPP) mouse models and organoids. ATOH1 deficiency downregulates growth arrest‐specific protein 1 (GAS1) by suppressing GAS1 promoter transcription. GAS1 forms a complex with RET, which inhibits Tyr1062 phosphorylation, and consequently activates the RET/AKT/mTOR signaling pathway by ATOH1 deficiency. Combining chemotherapy with drugs targeting AKT/mTOR signaling can overcome ATOH1 deficiency‐induced chemoresistance. Moreover, it is confirmed that abnormal DNA hypermethylation induces ATOH1 deficiency. Taken together, the results demonstrate that ATOH1 loss promotes cancer stemness through the ATOH1/GAS1/RET/AKT/mTOR signaling pathway in GAC, thus providing a potential therapeutic strategy for AKT/mTOR inhibitors in GAC patients with ATOH1 deficiency.https://doi.org/10.1002/advs.202301977ATOH1GAS1gastric adenocarcinomamouse modelstemness
spellingShingle Qing Zhong
Hua‐Gen Wang
Ji‐Hong Yang
Ru‐Hong Tu
An‐Yao Li
Gui‐Rong Zeng
Qiao‐Ling Zheng
Zhi‐ Yu Liu
Zhi‐Xin Shang‐Guan
Xiao‐ Bo Huang
Qiang Huang
Yi‐Fan Li
Hua‐Long Zheng
Guang‐Tan Lin
Ze‐Ning Huang
Kai‐Xiang Xu
Wen‐Wu Qiu
Mei‐Chen Jiang
Ya‐Jun Zhao
Jian‐Xian Lin
Zhi‐Hong Huang
Jing‐Min Huang
Ping Li
Jian‐Wei Xie
Chao‐Hui Zheng
Qi‐Yue Chen
Chang‐Ming Huang
Loss of ATOH1 in Pit Cell Drives Stemness and Progression of Gastric Adenocarcinoma by Activating AKT/mTOR Signaling through GAS1
Advanced Science
ATOH1
GAS1
gastric adenocarcinoma
mouse model
stemness
title Loss of ATOH1 in Pit Cell Drives Stemness and Progression of Gastric Adenocarcinoma by Activating AKT/mTOR Signaling through GAS1
title_full Loss of ATOH1 in Pit Cell Drives Stemness and Progression of Gastric Adenocarcinoma by Activating AKT/mTOR Signaling through GAS1
title_fullStr Loss of ATOH1 in Pit Cell Drives Stemness and Progression of Gastric Adenocarcinoma by Activating AKT/mTOR Signaling through GAS1
title_full_unstemmed Loss of ATOH1 in Pit Cell Drives Stemness and Progression of Gastric Adenocarcinoma by Activating AKT/mTOR Signaling through GAS1
title_short Loss of ATOH1 in Pit Cell Drives Stemness and Progression of Gastric Adenocarcinoma by Activating AKT/mTOR Signaling through GAS1
title_sort loss of atoh1 in pit cell drives stemness and progression of gastric adenocarcinoma by activating akt mtor signaling through gas1
topic ATOH1
GAS1
gastric adenocarcinoma
mouse model
stemness
url https://doi.org/10.1002/advs.202301977
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