Volume 63, Issue 1 pp. 75-93
RESEARCH ARTICLE

DDR1/2 enhance KIT activation and imatinib resistance of primary and secondary KIT mutants in gastrointestinal stromal tumors

Anbu Liu

Anbu Liu

NHC Key Laboratory of Metabolic Cardiovascular Diseases Research, Science and Technology Center, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China

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Shaoting Zhang

Shaoting Zhang

NHC Key Laboratory of Metabolic Cardiovascular Diseases Research, Science and Technology Center, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China

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Ming Wang

Ming Wang

NHC Key Laboratory of Metabolic Cardiovascular Diseases Research, Science and Technology Center, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China

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Liangying Zhang

Liangying Zhang

NHC Key Laboratory of Metabolic Cardiovascular Diseases Research, Science and Technology Center, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China

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Shidong Xu

Shidong Xu

Department of Oncology, School of Medicine, Tongren Hospital, Shanghai Jiao Tong University, Shanghai, China

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Ahmad Nasimian

Ahmad Nasimian

Department of Laboratory Medicine, Division of Translational Cancer Research, Lund University, Lund, Sweden

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Shujing Li

Shujing Li

NHC Key Laboratory of Metabolic Cardiovascular Diseases Research, Science and Technology Center, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China

Department of Pediatrics, The General Hospital of Ningxia Medical University, Yinchuan, China

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Sien Zhao

Sien Zhao

NHC Key Laboratory of Metabolic Cardiovascular Diseases Research, Science and Technology Center, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China

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Xu Cao

Xu Cao

NHC Key Laboratory of Metabolic Cardiovascular Diseases Research, Science and Technology Center, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China

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Jinhai Tian

Jinhai Tian

NHC Key Laboratory of Metabolic Cardiovascular Diseases Research, Science and Technology Center, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China

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Yuanyuan Yu

Yuanyuan Yu

Department of Emergency, The General Hospital of Ningxia Medical University, Yinchuan, China

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Zhaoyang Fan

Zhaoyang Fan

NHC Key Laboratory of Metabolic Cardiovascular Diseases Research, Science and Technology Center, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China

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Kun Xiao

Kun Xiao

NHC Key Laboratory of Metabolic Cardiovascular Diseases Research, Science and Technology Center, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China

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Hui Zhao

Hui Zhao

Key Laboratory for Regenerative Medicine, School of Biomedical Sciences, Faculty of Medicine, Ministry of Education, The Chinese University of Hong Kong, Hong Kong SAR, China

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Julhash U. Kazi

Corresponding Author

Julhash U. Kazi

Department of Laboratory Medicine, Division of Translational Cancer Research, Lund University, Lund, Sweden

Correspondence Jianmin Sun

Email: [email protected]

Lijun Ma

Email: [email protected]

Julhash U. Kazi

Email: [email protected]

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Lijun Ma

Corresponding Author

Lijun Ma

Department of Oncology, School of Medicine, Tongren Hospital, Shanghai Jiao Tong University, Shanghai, China

Correspondence Jianmin Sun

Email: [email protected]

Lijun Ma

Email: [email protected]

Julhash U. Kazi

Email: [email protected]

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Jianmin Sun

Corresponding Author

Jianmin Sun

NHC Key Laboratory of Metabolic Cardiovascular Diseases Research, Science and Technology Center, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan, China

Correspondence Jianmin Sun

Email: [email protected]

Lijun Ma

Email: [email protected]

Julhash U. Kazi

Email: [email protected]

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First published: 22 September 2023

Abstract

Gastrointestinal stromal tumors (GISTs) are predominantly initiated by KIT mutations. In this study, we observed that discoidin domain receptors 1 and 2 (DDR1 and DDR2) exhibited high expression in GISTs, were associated with KIT, and enhanced the activation of both wild-type KIT and primary KIT mutants. Inhibition of DDR1/2 led to a reduction in the activation of KIT and its downstream signaling molecules, ultimately impairing GIST cell survival and proliferation in vitro. Consequently, treatment of mice carrying germline KIT/V558A mutation with DDR1/2 inhibitor significantly impeded tumor growth, and the combined use of DDR1/2 inhibitor and imatinib, the first-line targeted therapeutic agent for GISTs, markedly enhanced tumor growth suppression. In addition, DDR1/2 inhibition resulted in decreased KIT expression, while KIT inhibition led to upregulation of DDR1/2 expression in GISTs. The presence of DDR1/2 also decreased the sensitivity of wild-type KIT or primary KIT mutants to imatinib, indicating a possible role for DDR1/2 in promoting GIST survival during KIT-targeted therapy. The development of drug-resistant secondary KIT mutations is a primary factor contributing to GIST recurrence following targeted therapy. Similar to primary KIT mutants, DDR1/2 can associate with and enhance the activation of secondary KIT mutants, further diminishing their sensitivity to imatinib. In summary, our data demonstrate that DDR1/2 contribute to KIT activation in GISTs and strengthen resistance to imatinib for both primary and secondary KIT mutants, providing a rationale for further exploration of DDR1/2 targeting in GIST treatment.

CONFLICT OF INTEREST STATEMENT

The authors declare no conflict of interest.

DATA AVAILABILITY STATEMENT

The data support the findings in this study are available from the corresponding author upon reasonable request.

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