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Chen M, Li H, Xu X, Bao X, Xue L, Ai X, Xu J, Xu M, Shi Y, Zhen T, Li J, Yang Y, Ji Y, Fu Z, Xing K, Qing T, Wang Q, Zhong P, Zhu S. Identification of RAC1 in promoting brain metastasis of lung adenocarcinoma using single-cell transcriptome sequencing. Cell Death Dis 2023; 14:330. [PMID: 37202394 DOI: 10.1038/s41419-023-05823-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 04/20/2023] [Accepted: 04/21/2023] [Indexed: 05/20/2023]
Abstract
This study aims to give a new perspective to the biomarkers in the lung adenocarcinoma (LUAD) brain metastasis, pathways involved and potential therapeutics. We performed a comprehensive single-cell level transcriptomic analysis on one LUAD patient with circulating tumor cells (CTCs), primary tumor tissue and metastatic tumor tissue using scRNA-seq approach to identify metastasis related biomarkers. Further scRNA-seq were performed on 7 patients to validate the cancer metastatic hallmark. with single cells collected from either metastatic or primary LUAD tissues. Pathological and functional studies were also performed to evidence the critical role of RAC1 in the LUAD metastasis. Hallmark gene was verified based on immunohistochemistry staining, cytological experiment, survival information from The Cancer Genome Atlas (TCGA), and staining results from Human Protein Atlas (HPA) databases. PCA analysis revealed that CTCs were in the intermediate place between the metastatic group and primary group. In the unsupervised clustering analysis CTCs were closer to one of the metastatic tumor cells, implying heterogeneity of the metastatic tumor and origin of the CTCs were from metastatic site. Transitional phase related gene analysis identified RAC1 was enriched in metastatic tumor tissue (MTT) preferred gene set functioning as regulated cell death and apoptosis as well as promoted macromolecule organization. Compared with normal tissue, expression levels of RAC1 increased significantly in LUAD tissue based on HPA database. High expression of RAC1 predicts worse prognosis and higher-risk. EMT analysis identified the propensity of mesenchymal state in primary cells while epithelial signals were higher in the metastatic site. Functional clustering and pathway analyses suggested genes in RAC1 highly expressed cells played critical roles in adhesion, ECM and VEGF signaling pathways. Inhibition of RAC1 attenuates the proliferation, invasiveness and migration ability of lung cancer cells. Besides, through MRI T2WI results, we proved that RAC1 can promote brain metastasis in the RAC1-overexpressed H1975 cell burden nude mouse model. RAC1 and its mechanisms might promote drug design against LUAD brain metastasis.
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Affiliation(s)
- Mingyu Chen
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, 200040, Shanghai, China
- School of Life Sciences, Fudan University, 200438, Shanghai, China
- Research Unit of New Technologies of Micro-Endoscopy Combination in Skull Base Surgery (2018RU008), Chinese Academy of Medical Sciences, Beijing, China
- Neurosurgical Institute of Fudan University, Shanghai, China
- Shanghai Clinical Medical Center of Neurosurgery, Shanghai, China
- Shanghai Key Laboratory of Brain Function Restoration and Neural Regeneration, Shanghai, China
| | - Hanyue Li
- Department of Lung Tumor Clinical Center, Shanghai Chest Hospital, Shanghai Jiaotong University, 200030, Shanghai, China
| | - Xiaolin Xu
- Department of Cardiothoracic Surgery, Third Affiliated Hospital of Naval Military Medical University, 200003, Shanghai, China
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University, 507 Zhengmin Road, Shanghai, PR China
| | - Xunxia Bao
- School of Life Science, Anhui Medical University, 230032, Hefei, China
| | - Lei Xue
- Department of Thoracic Surgery, Shanghai Changzheng Hospital, Second Affiliated Hospital of Naval Military Medical University, 200003, Shanghai, China
| | - Xinghao Ai
- Department of Lung Tumor Clinical Center, Shanghai Chest Hospital, Shanghai Jiaotong University, 200030, Shanghai, China
| | - Jian Xu
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, 200040, Shanghai, China
- School of Life Sciences, Fudan University, 200438, Shanghai, China
- Research Unit of New Technologies of Micro-Endoscopy Combination in Skull Base Surgery (2018RU008), Chinese Academy of Medical Sciences, Beijing, China
- Neurosurgical Institute of Fudan University, Shanghai, China
- Shanghai Clinical Medical Center of Neurosurgery, Shanghai, China
- Shanghai Key Laboratory of Brain Function Restoration and Neural Regeneration, Shanghai, China
| | - Ming Xu
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, 200040, Shanghai, China
- School of Life Sciences, Fudan University, 200438, Shanghai, China
- Research Unit of New Technologies of Micro-Endoscopy Combination in Skull Base Surgery (2018RU008), Chinese Academy of Medical Sciences, Beijing, China
- Neurosurgical Institute of Fudan University, Shanghai, China
- Shanghai Clinical Medical Center of Neurosurgery, Shanghai, China
- Shanghai Key Laboratory of Brain Function Restoration and Neural Regeneration, Shanghai, China
| | - Yong Shi
- Cinoasia Institute, 200438, Shanghai, China
| | | | - Jie Li
- Cinoasia Institute, 200438, Shanghai, China
| | - Yi Yang
- Cinoasia Institute, 200438, Shanghai, China
| | - Yang Ji
- Cinoasia Institute, 200438, Shanghai, China
| | | | | | - Tao Qing
- Cinoasia Institute, 200438, Shanghai, China
| | - Qiubo Wang
- Department of Clinical Laboratory, Wuxi 9th People's Hospital Affiliated to Soochow University, 214000, Wuxi, Jiangsu, China.
| | - Ping Zhong
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, 200040, Shanghai, China.
- School of Life Sciences, Fudan University, 200438, Shanghai, China.
- Research Unit of New Technologies of Micro-Endoscopy Combination in Skull Base Surgery (2018RU008), Chinese Academy of Medical Sciences, Beijing, China.
- Neurosurgical Institute of Fudan University, Shanghai, China.
- Shanghai Clinical Medical Center of Neurosurgery, Shanghai, China.
- Shanghai Key Laboratory of Brain Function Restoration and Neural Regeneration, Shanghai, China.
| | - Sibo Zhu
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, 200040, Shanghai, China.
- School of Life Sciences, Fudan University, 200438, Shanghai, China.
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Liu P, Jonkheijm P, Terstappen LWMM, Stevens M. Magnetic Particles for CTC Enrichment. Cancers (Basel) 2020; 12:cancers12123525. [PMID: 33255978 PMCID: PMC7760229 DOI: 10.3390/cancers12123525] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 11/20/2020] [Accepted: 11/23/2020] [Indexed: 02/07/2023] Open
Abstract
Simple Summary For the enrichment of very rare cells, such as Circulating Tumor Cells (CTCs), immunomagnetic enrichment is frequently used. For this purpose, magnetic nanoparticles (MNPs) coated with specific antibodies directed against cancer cells are used. In this review, we look at the properties such a particle needs to have in order to be used successfully, and describe the different methods used in the production of such a particle as well as the methods for their separation. Additionally, an overview is given of the antibodies that could potentially be used for this purpose. Abstract Here, we review the characteristics and synthesis of magnetic nanoparticles (MNPs) and place these in the context of their usage in the immunomagnetic enrichment of Circulating Tumor Cells (CTCs). The importance of the different characteristics is explained, the need for a very specific enrichment is emphasized and different (commercial) magnetic separation techniques are shown. As the specificity of an MNP is in a large part dependent on the antibody coated onto the particle, different strategies in the coupling of specific antibodies as well as an overview of the available antibodies is given.
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Affiliation(s)
- Peng Liu
- Department of Medical Cell BioPhysics, University of Twente, 7522 NB Enschede, The Netherlnds; (P.L.); (L.W.M.M.T.)
- Department of Molecular Nanofabrication, University of Twente, 7522 NB Enschede, The Netherlands;
| | - Pascal Jonkheijm
- Department of Molecular Nanofabrication, University of Twente, 7522 NB Enschede, The Netherlands;
| | - Leon W. M. M. Terstappen
- Department of Medical Cell BioPhysics, University of Twente, 7522 NB Enschede, The Netherlnds; (P.L.); (L.W.M.M.T.)
| | - Michiel Stevens
- Department of Medical Cell BioPhysics, University of Twente, 7522 NB Enschede, The Netherlnds; (P.L.); (L.W.M.M.T.)
- Correspondence: ; Tel.: +31-53-489-4101
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Yaman S, Anil-Inevi M, Ozcivici E, Tekin HC. Magnetic Force-Based Microfluidic Techniques for Cellular and Tissue Bioengineering. Front Bioeng Biotechnol 2018; 6:192. [PMID: 30619842 PMCID: PMC6305723 DOI: 10.3389/fbioe.2018.00192] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 11/23/2018] [Indexed: 01/21/2023] Open
Abstract
Live cell manipulation is an important biotechnological tool for cellular and tissue level bioengineering applications due to its capacity for guiding cells for separation, isolation, concentration, and patterning. Magnetic force-based cell manipulation methods offer several advantages, such as low adverse effects on cell viability and low interference with the cellular environment. Furthermore, magnetic-based operations can be readily combined with microfluidic principles by precisely allowing control over the spatiotemporal distribution of physical and chemical factors for cell manipulation. In this review, we present recent applications of magnetic force-based cell manipulation in cellular and tissue bioengineering with an emphasis on applications with microfluidic components. Following an introduction of the theoretical background of magnetic manipulation, components of magnetic force-based cell manipulation systems are described. Thereafter, different applications, including separation of certain cell fractions, enrichment of rare cells, and guidance of cells into specific macro- or micro-arrangements to mimic natural cell organization and function, are explained. Finally, we discuss the current challenges and limitations of magnetic cell manipulation technologies in microfluidic devices with an outlook on future developments in the field.
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