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Ge Z, Dai S, Yu H, Zhao J, Yang W, Tan W, Sun J, Gan Q, Liu L, Wang Z. Nanomechanical Analysis of Living Small Extracellular Vesicles to Identify Gastric Cancer Cell Malignancy Based on a Biomimetic Peritoneum. ACS NANO 2024; 18:6130-6146. [PMID: 38349890 PMCID: PMC10906078 DOI: 10.1021/acsnano.3c02285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 02/03/2024] [Accepted: 02/08/2024] [Indexed: 02/15/2024]
Abstract
Gastric cancer is one of the most prevalent digestive malignancies. The lack of effective in vitro peritoneal models has hindered the exploration of the potential mechanisms behind gastric cancer's peritoneal metastasis. An accumulating body of research indicates that small extracellular vesicles (sEVs) play an indispensable role in peritoneal metastasis of gastric cancer cells. In this study, a biomimetic peritoneum was constructed. The biomimetic model is similar to real peritoneum in internal microstructure, composition, and primary function, and it enables the recurrence of peritoneal metastasis process in vitro. Based on this model, the association between the mechanical properties of sEVs and the invasiveness of gastric cancer was identified. By performing nanomechanical analysis on sEVs, we found that the Young's modulus of sEVs can be utilized to differentiate between malignant clinical samples (ascites) and nonmalignant clinical samples (peritoneal lavage). Furthermore, patients' ascites-derived sEVs were verified to stimulate the mesothelial-to-mesenchymal transition, thereby promoting peritoneal metastasis. In summary, nanomechanical analysis of living sEVs could be utilized for the noninvasive diagnosis of malignant degree and peritoneal metastasis of gastric cancer. This finding is expected to contribute future treatments.
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Affiliation(s)
- Zhixing Ge
- State
Key Laboratory of Robotics, Shenyang Institute
of Automation, Chinese Academy of Sciences, Shenyang 110016, China
- Institutes
for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang 110016, China
- University
of Chinese Academy of Sciences, Beijing 100049, China
| | - Songchen Dai
- Department
of Surgical Oncology and General Surgery, The First Hospital of China Medical University, Shenyang 110016, China
- Key
Laboratory of Precision Diagnosis and Treatment of Gastrointestinal
Tumors, Ministry of Education, Shenyang 110016, China
| | - Haibo Yu
- State
Key Laboratory of Robotics, Shenyang Institute
of Automation, Chinese Academy of Sciences, Shenyang 110016, China
- Institutes
for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang 110016, China
| | - Junhua Zhao
- Department
of Surgical Oncology and General Surgery, The First Hospital of China Medical University, Shenyang 110016, China
- Key
Laboratory of Precision Diagnosis and Treatment of Gastrointestinal
Tumors, Ministry of Education, Shenyang 110016, China
| | - Wenguang Yang
- School of
Electromechanical and Automotive Engineering, Yantai University, Yantai 264005, China
| | - Wenjun Tan
- State
Key Laboratory of Robotics, Shenyang Institute
of Automation, Chinese Academy of Sciences, Shenyang 110016, China
- Institutes
for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang 110016, China
- University
of Chinese Academy of Sciences, Beijing 100049, China
| | - Jingxu Sun
- Department
of Surgical Oncology and General Surgery, The First Hospital of China Medical University, Shenyang 110016, China
- Key
Laboratory of Precision Diagnosis and Treatment of Gastrointestinal
Tumors, Ministry of Education, Shenyang 110016, China
| | - Quan Gan
- State
Key Laboratory of Robotics, Shenyang Institute
of Automation, Chinese Academy of Sciences, Shenyang 110016, China
- Institutes
for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang 110016, China
- University
of Chinese Academy of Sciences, Beijing 100049, China
| | - Lianqing Liu
- State
Key Laboratory of Robotics, Shenyang Institute
of Automation, Chinese Academy of Sciences, Shenyang 110016, China
- Institutes
for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang 110016, China
| | - Zhenning Wang
- Department
of Surgical Oncology and General Surgery, The First Hospital of China Medical University, Shenyang 110016, China
- Key
Laboratory of Precision Diagnosis and Treatment of Gastrointestinal
Tumors, Ministry of Education, Shenyang 110016, China
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Wang C, Xie GM, Zhang LP, Yan S, Xu JL, Han YL, Luo MJ, Gong JN. High Engraftment and Metastatic Rates in Orthotopic Xenograft Models of Gastric Cancer via Direct Implantation of Tumor Cell Suspensions. Cancers (Basel) 2024; 16:759. [PMID: 38398149 PMCID: PMC10886682 DOI: 10.3390/cancers16040759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 01/30/2024] [Accepted: 01/31/2024] [Indexed: 02/25/2024] Open
Abstract
Although the implantation of intact tumor fragments is a common practice to generate orthotopic xenografts to study tumor invasion and metastasis, the direct implantation of tumor cell suspensions is necessary when prior manipulations of tumor cells are required. However, the establishment of orthotopic xenografts using tumor cell suspensions is not mature, and a comparative study directly comparing their engraftment and metastatic capabilities is lacking. It is unclear whether tumor fragments are superior to cell suspensions for successful engraftment and metastasis. In this study, we employed three GC cell lines with varying metastatic capacities to stably express firefly luciferase for monitoring tumor progression in real time. We successfully minimized the risk of cell leakage during the orthotopic injection of tumor cell suspensions without Corning Matrigel by systematically optimizing the surgical procedure, injection volume, and needle size options. Comparable high engraftment and metastatic rates between these two methods were demonstrated using MKN-45 cells with a strong metastatic ability. Importantly, our approach can adjust the rate of tumor progression flexibly and cuts the experimental timeline from 10-12 weeks (for tumor fragments) to 4-5 weeks. Collectively, we provided a highly reproducible procedure with a shortened experimental timeline and low cost for establishing orthotopic GC xenografts via the direct implantation of tumor cell suspensions.
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Affiliation(s)
- Chao Wang
- National Human Diseases Animal Model Resource Center, National Center of Technology Innovation for Animal Model, NHC Key Laboratory of Human Disease Comparative Medicine, The Institute of Laboratory Animal Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100021, China; (C.W.); (G.-M.X.); (L.-P.Z.); (S.Y.); (J.-L.X.); (Y.-L.H.)
| | - Guo-Min Xie
- National Human Diseases Animal Model Resource Center, National Center of Technology Innovation for Animal Model, NHC Key Laboratory of Human Disease Comparative Medicine, The Institute of Laboratory Animal Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100021, China; (C.W.); (G.-M.X.); (L.-P.Z.); (S.Y.); (J.-L.X.); (Y.-L.H.)
| | - Li-Ping Zhang
- National Human Diseases Animal Model Resource Center, National Center of Technology Innovation for Animal Model, NHC Key Laboratory of Human Disease Comparative Medicine, The Institute of Laboratory Animal Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100021, China; (C.W.); (G.-M.X.); (L.-P.Z.); (S.Y.); (J.-L.X.); (Y.-L.H.)
| | - Shuo Yan
- National Human Diseases Animal Model Resource Center, National Center of Technology Innovation for Animal Model, NHC Key Laboratory of Human Disease Comparative Medicine, The Institute of Laboratory Animal Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100021, China; (C.W.); (G.-M.X.); (L.-P.Z.); (S.Y.); (J.-L.X.); (Y.-L.H.)
| | - Jia-Li Xu
- National Human Diseases Animal Model Resource Center, National Center of Technology Innovation for Animal Model, NHC Key Laboratory of Human Disease Comparative Medicine, The Institute of Laboratory Animal Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100021, China; (C.W.); (G.-M.X.); (L.-P.Z.); (S.Y.); (J.-L.X.); (Y.-L.H.)
| | - Yun-Lin Han
- National Human Diseases Animal Model Resource Center, National Center of Technology Innovation for Animal Model, NHC Key Laboratory of Human Disease Comparative Medicine, The Institute of Laboratory Animal Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100021, China; (C.W.); (G.-M.X.); (L.-P.Z.); (S.Y.); (J.-L.X.); (Y.-L.H.)
| | - Ming-Jie Luo
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou 510080, China;
| | - Jia-Nan Gong
- National Human Diseases Animal Model Resource Center, National Center of Technology Innovation for Animal Model, NHC Key Laboratory of Human Disease Comparative Medicine, The Institute of Laboratory Animal Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100021, China; (C.W.); (G.-M.X.); (L.-P.Z.); (S.Y.); (J.-L.X.); (Y.-L.H.)
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3
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Gao J, Lan J, Liao H, Yang F, Qiu P, Jin F, Wang S, Shen L, Chao T, Zhang C, Zhu Y. Promising preclinical patient-derived organoid (PDO) and xenograft (PDX) models in upper gastrointestinal cancers: progress and challenges. BMC Cancer 2023; 23:1205. [PMID: 38062430 PMCID: PMC10702130 DOI: 10.1186/s12885-023-11434-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 09/22/2023] [Indexed: 12/18/2023] Open
Abstract
Gastrointestinal (GI) cancers (gastric cancer, oesophageal cancer, liver cancer, colorectal cancer, etc.) are the most common cancers with the highest morbidity and mortality in the world. The therapy for most GI cancers is difficult and is associated with a poor prognosis. In China, upper GI cancers, mainly gastric cancer (GC) and oesophageal cancer (EC), are very common due to Chinese people's characteristics, and more than half of patients are diagnosed with distant metastatic or locally advanced disease. Compared to other solid cancers, such as lung cancer and breast cancer, personalized therapies, especially targeted therapy and immunotherapy, in GC and EC are relatively lacking, leading to poor prognosis. For a long time, most studies were carried out by using in vitro cancer cell lines or in vivo cell line-derived xenograft models, which are unable to reproduce the characteristics of tumours derived from patients, leading to the possible misguidance of subsequent clinical validation. The patient-derived models represented by patient-derived organoid (PDO) and xenograft (PDX) models, known for their high preservation of patient tumour features, have emerged as a very popular platform that has been widely used in numerous studies, especially in the research and development of antitumour drugs and personalized medicine. Herein, based on some of the available published literature, we review the research and application status of PDO and PDX models in GC and EC, as well as detail their future challenges and prospects, to promote their use in basic and translational studies or personalized therapy.
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Affiliation(s)
- Jing Gao
- Department of Oncology, Shenzhen Key Laboratory of Gastrointestinal Cancer Translational Research, Cancer Institute, Peking University Shenzhen Hospital, Shenzhen-Peking University- Hong Kong University of Science and Technology Medical Center, Shenzhen, China
| | - Jianqiang Lan
- Guangdong Research Center of Organoid Engineering and Technology, No. 11 Kaiyuan Avenue, Huangpu District, Guangzhou, China
| | - Haiyan Liao
- Department of Oncology, Shenzhen Key Laboratory of Gastrointestinal Cancer Translational Research, Cancer Institute, Peking University Shenzhen Hospital, Shenzhen-Peking University- Hong Kong University of Science and Technology Medical Center, Shenzhen, China
| | - Fang Yang
- Department of Oncology, Shenzhen Key Laboratory of Gastrointestinal Cancer Translational Research, Cancer Institute, Peking University Shenzhen Hospital, Shenzhen-Peking University- Hong Kong University of Science and Technology Medical Center, Shenzhen, China
| | - Pei Qiu
- Guangdong Research Center of Organoid Engineering and Technology, No. 11 Kaiyuan Avenue, Huangpu District, Guangzhou, China
| | - Feng Jin
- Department of Oncology, Shenzhen Key Laboratory of Gastrointestinal Cancer Translational Research, Cancer Institute, Peking University Shenzhen Hospital, Shenzhen-Peking University- Hong Kong University of Science and Technology Medical Center, Shenzhen, China
| | - Shubin Wang
- Department of Oncology, Shenzhen Key Laboratory of Gastrointestinal Cancer Translational Research, Cancer Institute, Peking University Shenzhen Hospital, Shenzhen-Peking University- Hong Kong University of Science and Technology Medical Center, Shenzhen, China
| | - Lin Shen
- Key laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Gastrointestinal Oncology, Peking University Cancer Hospital and Institute, No. 52 Fucheng Road, Haidian District, Beijing, China
| | - Tengfei Chao
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1095 Jiefang Avenue, Qiaokou District, Wuhan, China.
| | - Cheng Zhang
- Key laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Gastrointestinal Oncology, Peking University Cancer Hospital and Institute, No. 52 Fucheng Road, Haidian District, Beijing, China.
| | - Yu Zhu
- Guangdong Research Center of Organoid Engineering and Technology, No. 11 Kaiyuan Avenue, Huangpu District, Guangzhou, China.
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4
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Jiang NZ, Bai MZ, Huang CF, Ma ZL, Zhong RY, Fu WK, Gao L, Tian L, Mi NN, Ma HD, Lu YW, Zhang ZA, Zhao JY, Yu HY, Zhang BP, Zhang XZ, Ren YX, Zhang C, Zhang Y, Yue P, Lin YY, Meng WB. First report on establishment and characterization of the extrahepatic cholangiocarcinoma sarcoma cell line CBC2T-2. World J Gastroenterol 2023; 29:5683-5698. [PMID: 38077157 PMCID: PMC10701331 DOI: 10.3748/wjg.v29.i41.5683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 09/20/2023] [Accepted: 10/11/2023] [Indexed: 11/07/2023] Open
Abstract
BACKGROUND Extrahepatic cholangiocarcinoma sarcoma is extremely rare in clinical practice. These cells consist of both epithelial and mesenchymal cells. Patient-derived cell lines that maintain tumor characteristics are valuable tools for studying the molecular mechanisms associated with carcinosarcoma. However, cholangiocarcinoma sarcoma cell lines are not available in cell banks. AIM To establish and characterize a new extrahepatic cholangiocarcinoma sarcoma cell line, namely CBC2T-2. METHODS We conducted a short tandem repeat (STR) test to confirm the identity of the CBC2T-2 cell line. Furthermore, we assessed the migratory and invasive properties of the cells and performed clonogenicity assay to evaluate the ability of individual cells to form colonies. The tumorigenic potential of CBC2T-2 cells was tested in vivo using non-obese diabetic/severe combined immunodeficient (NOD/SCID) mice. The cells were injected subcutaneously and tumor formation was observed. In addition, immunohistochemical analysis was carried out to examine the expression of epithelial marker CK19 and mesenchymal marker vimentin in both CBC2T-2 cells and xenografts. The CBC2T-2 cell line was used to screen the potential therapeutic effects of various clinical agents in patients with cholangiocarcinoma sarcoma. Lastly, whole-exome sequencing was performed to identify genetic alterations and screen for somatic mutations in the CBC2T-2 cell line. RESULTS The STR test showed that there was no cross-contamination and the results were identical to those of the original tissue. The cells showed round or oval-shaped epithelioid cells and mesenchymal cells with spindle-shaped or elongated morphology. The cells exhibited a high proliferation ratio with a doubling time of 47.11 h. This cell line has migratory, invasive, and clonogenic abilities. The chromosomes in the CBC2T-2 cells were polyploidy, with numbers ranging from 69 to 79. The subcutaneous tumorigenic assay confirmed the in vivo tumorigenic ability of CBC2T-2 cells in NOD/SCID mice. CBC2T-2 cells and xenografts were positive for both the epithelial marker, CK19, and the mesenchymal marker, vimentin. These results suggest that CBC2T-2 cells may have both epithelial and mesenchymal characteristics. The cells were also used to screen clinical agents in patients with cholangiocarcinoma sarcoma, and a combination of paclitaxel and gemcitabine was found to be the most effective treatment option. CONCLUSION We established the first human cholangiocarcinoma sarcoma cell line, CBC2T-2, with stable biogenetic traits. This cell line, as a research model, has a high clinical value and would facilitate the understanding of the pathogenesis of cholangiocarcinoma sarcoma.
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Affiliation(s)
- Ning-Zu Jiang
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, Gansu Province, China
- Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
- Laboratory of Biological Therapy and Regenerative Medicine Transformation Gansu Province, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Ming-Zhen Bai
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, Gansu Province, China
- Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
- Laboratory of Biological Therapy and Regenerative Medicine Transformation Gansu Province, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Chong-Fei Huang
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, Gansu Province, China
- Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
- Laboratory of Biological Therapy and Regenerative Medicine Transformation Gansu Province, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Ze-Long Ma
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, Gansu Province, China
- Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
- Laboratory of Biological Therapy and Regenerative Medicine Transformation Gansu Province, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Ru-Yang Zhong
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, Gansu Province, China
- Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
- Laboratory of Biological Therapy and Regenerative Medicine Transformation Gansu Province, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Wen-Kang Fu
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, Gansu Province, China
- Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
- Laboratory of Biological Therapy and Regenerative Medicine Transformation Gansu Province, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Long Gao
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, Gansu Province, China
- Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
- Laboratory of Biological Therapy and Regenerative Medicine Transformation Gansu Province, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Liang Tian
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, Gansu Province, China
- Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
- Laboratory of Biological Therapy and Regenerative Medicine Transformation Gansu Province, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Ning-Ning Mi
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, Gansu Province, China
- Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
- Laboratory of Biological Therapy and Regenerative Medicine Transformation Gansu Province, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Hai-Dong Ma
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, Gansu Province, China
- Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
- Laboratory of Biological Therapy and Regenerative Medicine Transformation Gansu Province, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Ya-Wen Lu
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, Gansu Province, China
- Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
- Laboratory of Biological Therapy and Regenerative Medicine Transformation Gansu Province, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Zi-Ang Zhang
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, Gansu Province, China
- Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
- Laboratory of Biological Therapy and Regenerative Medicine Transformation Gansu Province, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Jin-Yu Zhao
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, Gansu Province, China
- Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
- Laboratory of Biological Therapy and Regenerative Medicine Transformation Gansu Province, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Hai-Ying Yu
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, Gansu Province, China
- Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
- Laboratory of Biological Therapy and Regenerative Medicine Transformation Gansu Province, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Bao-Ping Zhang
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, Gansu Province, China
- Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
- Laboratory of Biological Therapy and Regenerative Medicine Transformation Gansu Province, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Xian-Zhuo Zhang
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, Gansu Province, China
- Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
- Laboratory of Biological Therapy and Regenerative Medicine Transformation Gansu Province, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Yan-Xian Ren
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, Gansu Province, China
- Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
- Laboratory of Biological Therapy and Regenerative Medicine Transformation Gansu Province, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Chao Zhang
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, Gansu Province, China
- Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
- Laboratory of Biological Therapy and Regenerative Medicine Transformation Gansu Province, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Yong Zhang
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, Gansu Province, China
- Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
- Laboratory of Biological Therapy and Regenerative Medicine Transformation Gansu Province, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Ping Yue
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, Gansu Province, China
- Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
- Laboratory of Biological Therapy and Regenerative Medicine Transformation Gansu Province, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Yan-Yan Lin
- The First Clinical Medical College, Lanzhou University, Lanzhou 730000, Gansu Province, China
- Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
- Laboratory of Biological Therapy and Regenerative Medicine Transformation Gansu Province, The First Hospital of Lanzhou University, Lanzhou 730000, Gansu Province, China
| | - Wen-Bo Meng
- Department of General Surgery, The First Hospital of Lanzhou University and Laboratory of Biological Therapy and Regenerative Medicine Transformation Gansu Province, Lanzhou 730000, Gansu Province, China
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5
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Wang R, Song S, Qin J, Yoshimura K, Peng F, Chu Y, Li Y, Fan Y, Jin J, Dang M, Dai E, Pei G, Han G, Hao D, Li Y, Chatterjee D, Harada K, Pizzi MP, Scott AW, Tatlonghari G, Yan X, Xu Z, Hu C, Mo S, Shanbhag N, Lu Y, Sewastjanow-Silva M, Fouad Abdelhakeem AA, Peng G, Hanash SM, Calin GA, Yee C, Mazur P, Marsden AN, Futreal A, Wang Z, Cheng X, Ajani JA, Wang L. Evolution of immune and stromal cell states and ecotypes during gastric adenocarcinoma progression. Cancer Cell 2023; 41:1407-1426.e9. [PMID: 37419119 PMCID: PMC10528152 DOI: 10.1016/j.ccell.2023.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 04/10/2023] [Accepted: 06/12/2023] [Indexed: 07/09/2023]
Abstract
Understanding tumor microenvironment (TME) reprogramming in gastric adenocarcinoma (GAC) progression may uncover novel therapeutic targets. Here, we performed single-cell profiling of precancerous lesions, localized and metastatic GACs, identifying alterations in TME cell states and compositions as GAC progresses. Abundant IgA+ plasma cells exist in the premalignant microenvironment, whereas immunosuppressive myeloid and stromal subsets dominate late-stage GACs. We identified six TME ecotypes (EC1-6). EC1 is exclusive to blood, while EC4, EC5, and EC2 are highly enriched in uninvolved tissues, premalignant lesions, and metastases, respectively. EC3 and EC6, two distinct ecotypes in primary GACs, associate with histopathological and genomic characteristics, and survival outcomes. Extensive stromal remodeling occurs in GAC progression. High SDC2 expression in cancer-associated fibroblasts (CAFs) is linked to aggressive phenotypes and poor survival, and SDC2 overexpression in CAFs contributes to tumor growth. Our study provides a high-resolution GAC TME atlas and underscores potential targets for further investigation.
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Affiliation(s)
- Ruiping Wang
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Shumei Song
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Jiangjiang Qin
- Department of Gastric Surgery, Zhejiang Cancer Hospital, Hangzhou, Zhejiang 310022, China; Institute of Basic Medicine and Cancer, Chinese Academy of Sciences, Hangzhou, Zhejiang 310018, China
| | - Katsuhiro Yoshimura
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Fuduan Peng
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Yanshuo Chu
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Yuan Li
- Department of Surgical Oncology and General Surgery, First Hospital of China Medical University, Shenyang 110001, China
| | - Yibo Fan
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Jiankang Jin
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Minghao Dang
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Enyu Dai
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Guangsheng Pei
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Guangchun Han
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Dapeng Hao
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Yating Li
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; Department of Melanoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Deyali Chatterjee
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Kazuto Harada
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Melissa Pool Pizzi
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Ailing W Scott
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Ghia Tatlonghari
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Xinmiao Yan
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Zhiyuan Xu
- Department of Gastric Surgery, Zhejiang Cancer Hospital, Hangzhou, Zhejiang 310022, China
| | - Can Hu
- Department of Gastric Surgery, Zhejiang Cancer Hospital, Hangzhou, Zhejiang 310022, China
| | - Shaowei Mo
- Department of Gastric Surgery, Zhejiang Cancer Hospital, Hangzhou, Zhejiang 310022, China
| | - Namita Shanbhag
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Yang Lu
- Department of Nuclear Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Matheus Sewastjanow-Silva
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Ahmed Adel Fouad Abdelhakeem
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Guang Peng
- Department of Clinical Cancer Prevention, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Samir M Hanash
- Department of Clinical Cancer Prevention, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - George A Calin
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Cassian Yee
- Department of Melanoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Pawel Mazur
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Autumn N Marsden
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Andrew Futreal
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Zhenning Wang
- Department of Surgical Oncology and General Surgery, First Hospital of China Medical University, Shenyang 110001, China
| | - Xiangdong Cheng
- Department of Gastric Surgery, Zhejiang Cancer Hospital, Hangzhou, Zhejiang 310022, China; Institute of Basic Medicine and Cancer, Chinese Academy of Sciences, Hangzhou, Zhejiang 310018, China
| | - Jaffer A Ajani
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
| | - Linghua Wang
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; The University of Texas MD Anderson Cancer Center UTHealth Houston Graduate School of Biomedical Sciences (GSBS), Houston, TX 77030, USA.
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6
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Li Z, Wang J, Wang Z, Xu Y. Towards an optimal model for gastric cancer peritoneal metastasis: current challenges and future directions. EBioMedicine 2023; 92:104601. [PMID: 37182268 DOI: 10.1016/j.ebiom.2023.104601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 04/08/2023] [Accepted: 04/19/2023] [Indexed: 05/16/2023] Open
Abstract
Peritoneal metastasis is a challenging aspect of clinical practice for gastric cancer. Animal models are crucial in understanding molecular mechanisms, assessing drug efficacy, and conducting clinical intervention studies, including those related to gastric cancer peritoneal metastasis. Unlike other xenograft models, peritoneal metastasis models should not only present tumor growth at the transplant site, but also recapitulate tumor cell metastasis in the abdominal cavity. Developing a reliable model of gastric cancer peritoneal metastasis involves several technical aspects, such as the selection of model animals, source of xenograft tumors, technology of transplantation, and dynamic monitoring of the tumor progression. To date, challenges remain in developing a reliable model that can completely recapitulate peritoneal metastasis. Thus, this review aims to summarize the techniques and strategies used to establish animal models of gastric cancer peritoneal metastasis, providing a reference for future model establishment.
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Affiliation(s)
- Zehui Li
- Department of Surgical Oncology and General Surgery, First Hospital of China Medical University, Shenyang, 110001, PR China
| | - Jin Wang
- Department of E.N.T., Shengjing Hospital of China Medical University, Shenyang, 110003, PR China
| | - Zhenning Wang
- Department of Surgical Oncology and General Surgery, First Hospital of China Medical University, Shenyang, 110001, PR China.
| | - Yan Xu
- Department of Surgical Oncology and General Surgery, First Hospital of China Medical University, Shenyang, 110001, PR China.
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7
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Fan Y, Li Y, Yao X, Jin J, Scott A, Liu B, Wang S, Huo L, Wang Y, Wang R, Pool Pizzi M, Ma L, Shao S, Sewastjanow-Silva M, Waters R, Chatterjee D, Liu B, Shanbhag N, Peng G, Calin GA, Mazur PK, Hanash SM, Ishizawa J, Hirata Y, Nagano O, Wang Z, Wang L, Xian W, McKeon F, Ajani JA, Song S. Epithelial SOX9 drives progression and metastases of gastric adenocarcinoma by promoting immunosuppressive tumour microenvironment. Gut 2023; 72:624-637. [PMID: 36002248 DOI: 10.1136/gutjnl-2021-326581] [Citation(s) in RCA: 24] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 08/03/2022] [Indexed: 12/08/2022]
Abstract
OBJECTIVE Many cancers engage embryonic genes for rapid growth and evading the immune system. SOX9 has been upregulated in many tumours, yet the role of SOX9 in mediating immunosuppressive tumour microenvironment is unclear. Here, we aim to dissect the role of SOX9-mediated cancer stemness attributes and immunosuppressive microenvironment in advanced gastric adenocarcinoma (GAC) for novel therapeutic discoveries. METHODS Bulk RNAseq/scRNA-seq, patient-derived cells/models and extensive functional studies were used to identify the expression and functions of SOX9 and its target genes in vitro and in vivo. Immune responses were studied in PBMCs or CD45+ immune cells cocultured with tumour cells with SOX9high or knockout and the KP-Luc2 syngeneic models were used for efficacy of combinations. RESULTS SOX9 is one of the most upregulated SOX genes in GAC and highly expressed in primary and metastatic tissues and associated with poor prognosis. Depletion of SOX9 in patient-derived GAC cells significantly decreased cancer stemness attributes, tumour formation and metastases and consistently increased CD8+ T cell responses when cocultured with PBMCs/CD45+ cells from GAC patients. RNA sequencing identified the leukaemia inhibitory factor (LIF) as the top secreted molecule regulated by SOX9 in tumour cells and was enriched in malignant ascites and mediated SOX9-induced M2 macrophage repolarisation and inhibited T cell function. CONCLUSION Epithelial SOX9 is critical in suppressing CD8+ T cell responses and modified macrophage function in GAC through the paracrine LIF factor. Cotargeting LIF/LIFR and CSF1R has great potential in targeting SOX9-mediated cancer stemness, T cell immunosuppression and metastases suggesting the novel combination therapy against advanced GAC.
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Affiliation(s)
- Yibo Fan
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Yuan Li
- Department of Surgical Oncology and General Surgery, First Hospital of China Medical University, Shenyang, PR China
| | - Xiaodan Yao
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jiangkang Jin
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Ailing Scott
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Bovey Liu
- Department of Biology and Biochemistry, University of Houston, Houston, TX, USA
| | - Shan Wang
- Department of Biology and Biochemistry, University of Houston, Houston, TX, USA
| | - Longfei Huo
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Ying Wang
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Ruiping Wang
- Departments of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Melissa Pool Pizzi
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Lang Ma
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Shan Shao
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Matheus Sewastjanow-Silva
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Rebecca Waters
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Deyali Chatterjee
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Bin Liu
- Department of Epigenet & Mol Carcinogenesis, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Namita Shanbhag
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Guang Peng
- Department of Clinical Cancer Prevention, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - George Adrian Calin
- Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Pawel Karol Mazur
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Samir M Hanash
- Department of Clinical Cancer Prevention, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jo Ishizawa
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Yuki Hirata
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Osamu Nagano
- Division of Gene Regulation, Institute for Advanced Medical Research, Keio University School of Medicine Graduate School of Medicine, Tokyo, Japan
| | - Zhenning Wang
- Department of Surgical Oncology and General Surgery, First Hospital of China Medical University, Shenyang, PR China
| | - Linghua Wang
- Departments of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Wa Xian
- Department of Biology and Biochemistry, University of Houston, Houston, TX, USA
| | - Frank McKeon
- Department of Biology and Biochemistry, University of Houston, Houston, TX, USA
| | - Jaffer A Ajani
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Shumei Song
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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8
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Jin J, Huo L, Fan Y, Wang R, Scott AW, Pizzi MP, Yao X, Shao S, Ma L, Da Silva MS, Yamashita K, Yoshimura K, Zhang B, Wu J, Wang L, Song S, Ajani JA. A new intronic quantitative PCR method led to the discovery of transformation from human ascites to murine malignancy in a mouse model. Front Oncol 2023; 13:1062424. [PMID: 36865791 PMCID: PMC9972586 DOI: 10.3389/fonc.2023.1062424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 01/10/2023] [Indexed: 02/08/2023] Open
Abstract
Purpose To establish a fast and accurate detection method for interspecies contaminations in the patient-derived xenograft (PDX) models and cell lines, and to elucidate possible mechanisms if interspecies oncogenic transformation is detected. Methods A fast and highly sensitive intronic qPCR method detecting Gapdh intronic genomic copies was developed to quantify if cells were human or murine or a mixture. By this method, we documented that murine stromal cells were abundant in the PDXs; we also authenticated our cell lines to be human or murine. Results In one mouse model, GA0825-PDX transformed murine stromal cells into a malignant tumorigenic murine P0825 cell line. We traced the timeline of this transformation and discovered three subpopulations descended from the same GA0825-PDX model: epithelium-like human H0825, fibroblast-like murine M0825, and main passaged murine P0825 displayed differences in tumorigenic capability in vivo. P0825 was the most aggressive and H0825 was weakly tumorigenic. Immunofluorescence (IF) staining revealed that P0825 cells highly expressed several oncogenic and cancer stem cell markers. Whole exosome sequencing (WES) analysis revealed that TP53 mutation in the human ascites IP116-generated GA0825-PDX may have played a role in the human-to-murine oncogenic transformation. Conclusion This intronic qPCR is able to quantify human/mouse genomic copies with high sensitivity and within a time frame of a few hours. We are the first to use intronic genomic qPCR for authentication and quantification of biosamples. Human ascites transformed murine stroma into malignancy in a PDX model.
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Affiliation(s)
- Jiankang Jin
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Longfei Huo
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Yibo Fan
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Ruiping Wang
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Ailing W. Scott
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Melissa Pool Pizzi
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Xiaodan Yao
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Shan Shao
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Lang Ma
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Matheus S. Da Silva
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Kohei Yamashita
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Katsuhiro Yoshimura
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Boyu Zhang
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Jingjing Wu
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Linghua Wang
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Shumei Song
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Jaffer A. Ajani
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
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9
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Lee D, Choi J, Oh HJ, Ham IH, Lee SH, Nomura S, Han SU, Hur H. Molecular and Immune Profiling of Syngeneic Mouse Models Predict Response to Immune Checkpoint Inhibitors in Gastric Cancer. Cancer Res Treat 2023; 55:167-178. [PMID: 35609622 PMCID: PMC9873335 DOI: 10.4143/crt.2022.094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 05/20/2022] [Indexed: 02/04/2023] Open
Abstract
PURPOSE Appropriate preclinical mouse models are needed to evaluate the response to immunotherapeutic agents. Immunocompetent mouse models have rarely been reported for gastric cancer. Thus, we investigated immunophenotypes and responses to immune checkpoint inhibitor (ICI) in immunocompetent mouse models using various murine gastric cancer cell lines. MATERIALS AND METHODS We constructed subcutaneous syngeneic tumors with murine gastric cancer cell lines, YTN3 and YTN16, in C57BL/6J mice. Mice were intraperitoneally treated with IgG isotype control or an anti-programmed death-ligand 1 (PD-L1) neutralizing antibody. We used immunohistochemistry to evaluate the tumor-infiltrating immune cells of formalin-fixed paraffin-embedded mouse tumor tissues. We compared the protein and RNA expression between YTN3 and YTN16 cell lines using a mouse cytokine array and RNA sequencing. RESULTS The mouse tumors revealed distinct histological and molecular characteristics. YTN16 cells showed upregulation of genes and proteins related to immunosuppression, such as Ccl2 (CCL2) and Csf1 (M-CSF). Macrophages and exhausted T cells were more enriched in YTN16 tumors than in YTN3 tumors. Several YTN3 tumors were completely regressed by the PD-L1 inhibitor, whereas YTN16 tumors were unaffected. Although treatment with a PD-L1 inhibitor increased infiltration of T cells in both the tumors, the proportion of exhausted immune cells did not decrease in the non-responder group. CONCLUSION We confirmed the histological and molecular features of cancer cells with various responses to ICI. Our models can be used in preclinical research on ICI resistance mechanisms to enhance clinical efficacy.
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Affiliation(s)
- Dagyeong Lee
- Department of Surgery, Ajou University School of Medicine, Suwon,
Korea,Cancer Biology Graduate Program, Ajou University Graduate School of Medicine, Suwon,
Korea,Inflamm-Aging Translational Research Center, Ajou University School of Medicine, Suwon,
Korea
| | - Junyong Choi
- Department of Surgery, Ajou University School of Medicine, Suwon,
Korea,Cancer Biology Graduate Program, Ajou University Graduate School of Medicine, Suwon,
Korea,Inflamm-Aging Translational Research Center, Ajou University School of Medicine, Suwon,
Korea
| | - Hye Jeong Oh
- Department of Surgery, Ajou University School of Medicine, Suwon,
Korea
| | - In-Hye Ham
- Department of Surgery, Ajou University School of Medicine, Suwon,
Korea,Inflamm-Aging Translational Research Center, Ajou University School of Medicine, Suwon,
Korea
| | - Sung Hak Lee
- Department of Hospital Pathology, College of Medicine, The Catholic University of Korea, Seoul,
Korea
| | - Sachiyo Nomura
- Department of Gastrointestinal Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo,
Japan
| | - Sang-Uk Han
- Department of Surgery, Ajou University School of Medicine, Suwon,
Korea
| | - Hoon Hur
- Department of Surgery, Ajou University School of Medicine, Suwon,
Korea,Cancer Biology Graduate Program, Ajou University Graduate School of Medicine, Suwon,
Korea,Inflamm-Aging Translational Research Center, Ajou University School of Medicine, Suwon,
Korea
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