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Shuai Q, Xu X, Liang Y, Halbiyat Z, Lu X, Hu Z, Peng Z, An J, Feng Z, Huang T, Zhao H, Liu Z, Xu J, Xie J. Engineered in vivo and in vitro tumor model recapitulates vasculogenic mimicry signatures in melanoma. Bioeng Transl Med 2024; 9:e10648. [PMID: 39036079 PMCID: PMC11256191 DOI: 10.1002/btm2.10648] [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: 08/15/2023] [Revised: 12/21/2023] [Accepted: 01/11/2024] [Indexed: 07/23/2024] Open
Abstract
Vasculogenic mimicry (VM) describes a process by which tumor cells formed a novel microcirculation pattern in an endothelial cell-free manner. Clinically, VM is associated with aggressive phenotype and poor patient survival. However, the current models for investigating VM include 2D monolayer cultures, Matrigel-based cultures, and animal models, each of which has limitations. Matrigel-based models often exhibit batch-to-batch variations, while in vivo tumor models currently produce insufficient amounts of VM. There is currently no suitable tumor model to discover new therapeutic targets against VM. Herein, we establish an extracellular matrix (ECM)-based engineered tumor model in vivo and in vitro. In this study, we demonstrate that matrix proteins enhanced the VM formation in the engineered xenograft model. Furthermore, we also investigated the role of collagen/fibronectin (FN) in melanoma progression and VM formation. Compared with cells cultured on TCPS plates, the B16F10 cells cultured on collagen/FN coated plates showed increased proliferation and stemness, and significantly enhanced invasion and formation of VM networks. Molecular mechanism analysis showed that Integrin/VE-cadherin/EphA2/PI3K/MMP-2 signaling pathways are responsible for VM formation. Our results indicate that collagen/FN matrix plays an important role in VM formation in melanoma, suggesting that ECM protein is a potential therapeutic target for anti-VM therapy for melanoma.
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Affiliation(s)
- Qizhi Shuai
- Department of Biochemistry and Molecular Biology, Shanxi Key Laboratory of Birth Defect and Cell Regeneration, MOE Key Laboratory of Coal Environmental Pathogenicity and PreventionShanxi Medical UniversityTaiyuanChina
| | - Xinrui Xu
- Department of Biochemistry and Molecular Biology, Shanxi Key Laboratory of Birth Defect and Cell Regeneration, MOE Key Laboratory of Coal Environmental Pathogenicity and PreventionShanxi Medical UniversityTaiyuanChina
- Laboratory of Ethnopharmacology, Tissue‐Orientated Property of Chinese Medicine Key Laboratory of Sichuan ProvinceWest China School of Medicine, West China Hospital, Sichuan UniversityChengduChina
| | - Yuxiang Liang
- Department of Biochemistry and Molecular Biology, Shanxi Key Laboratory of Birth Defect and Cell Regeneration, MOE Key Laboratory of Coal Environmental Pathogenicity and PreventionShanxi Medical UniversityTaiyuanChina
- Experimental Animal Center of Shanxi Medical UniversityShanxi Key Laboratory of Human Disease and Animal ModelsTaiyuanChina
| | - Zulala Halbiyat
- Department of Biochemistry and Molecular Biology, Shanxi Key Laboratory of Birth Defect and Cell Regeneration, MOE Key Laboratory of Coal Environmental Pathogenicity and PreventionShanxi Medical UniversityTaiyuanChina
| | - Xin Lu
- Department of Biochemistry and Molecular Biology, Shanxi Key Laboratory of Birth Defect and Cell Regeneration, MOE Key Laboratory of Coal Environmental Pathogenicity and PreventionShanxi Medical UniversityTaiyuanChina
| | - Zixuan Hu
- Department of Biochemistry and Molecular Biology, Shanxi Key Laboratory of Birth Defect and Cell Regeneration, MOE Key Laboratory of Coal Environmental Pathogenicity and PreventionShanxi Medical UniversityTaiyuanChina
| | - Zhiwei Peng
- Department of Biochemistry and Molecular Biology, Shanxi Key Laboratory of Birth Defect and Cell Regeneration, MOE Key Laboratory of Coal Environmental Pathogenicity and PreventionShanxi Medical UniversityTaiyuanChina
| | - Jie An
- Department of Nuclear MedicineThe First Hospital of Shanxi Medical University, Collaborative Innovation Center for Molecular Imaging of Precision Medicine, Shanxi Medical UniversityTaiyuanChina
| | - Zhiwei Feng
- Department of Biochemistry and Molecular Biology, Shanxi Key Laboratory of Birth Defect and Cell Regeneration, MOE Key Laboratory of Coal Environmental Pathogenicity and PreventionShanxi Medical UniversityTaiyuanChina
| | - Tingjuan Huang
- Department of Biochemistry and Molecular Biology, Shanxi Key Laboratory of Birth Defect and Cell Regeneration, MOE Key Laboratory of Coal Environmental Pathogenicity and PreventionShanxi Medical UniversityTaiyuanChina
| | - Hong Zhao
- Department of Biochemistry and Molecular Biology, Shanxi Key Laboratory of Birth Defect and Cell Regeneration, MOE Key Laboratory of Coal Environmental Pathogenicity and PreventionShanxi Medical UniversityTaiyuanChina
| | - Zhizhen Liu
- Department of Biochemistry and Molecular Biology, Shanxi Key Laboratory of Birth Defect and Cell Regeneration, MOE Key Laboratory of Coal Environmental Pathogenicity and PreventionShanxi Medical UniversityTaiyuanChina
| | - Jun Xu
- Department of Hepatopancreatobiliary SurgeryThe First Hospital of Shanxi Medical UniversityTaiyuanChina
| | - Jun Xie
- Department of Biochemistry and Molecular Biology, Shanxi Key Laboratory of Birth Defect and Cell Regeneration, MOE Key Laboratory of Coal Environmental Pathogenicity and PreventionShanxi Medical UniversityTaiyuanChina
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Xu X, Zheng Y, Luo L, You Z, Chen H, Wang J, Zhang F, Liu Y, Ke Y. Glioblastoma stem cells deliver ABCB4 transcribed by ATF3 via exosomes conferring glioblastoma resistance to temozolomide. Cell Death Dis 2024; 15:318. [PMID: 38710703 PMCID: PMC11074105 DOI: 10.1038/s41419-024-06695-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Revised: 04/13/2024] [Accepted: 04/18/2024] [Indexed: 05/08/2024]
Abstract
Glioblastoma stem cells (GSCs) play a key role in glioblastoma (GBM) resistance to temozolomide (TMZ) chemotherapy. With the increase in research on the tumour microenvironment, exosomes secreted by GSCs have become a new focus in GBM research. However, the molecular mechanism by which GSCs affect drug resistance in GBM cells via exosomes remains unclear. Using bioinformatics analysis, we identified the specific expression of ABCB4 in GSCs. Subsequently, we established GSC cell lines and used ultracentrifugation to extract secreted exosomes. We conducted in vitro and in vivo investigations to validate the promoting effect of ABCB4 and ABCB4-containing exosomes on TMZ resistance. Finally, to identify the transcription factors regulating the transcription of ABCB4, we performed luciferase assays and chromatin immunoprecipitation-quantitative PCR. Our results indicated that ABCB4 is highly expressed in GSCs. Moreover, high expression of ABCB4 promoted the resistance of GSCs to TMZ. Our study found that GSCs can also transmit their highly expressed ABCB4 to differentiated glioma cells (DGCs) through exosomes, leading to high expression of ABCB4 in these cells and promoting their resistance to TMZ. Mechanistic studies have shown that the overexpression of ABCB4 in GSCs is mediated by the transcription factor ATF3. In conclusion, our results indicate that GSCs can confer resistance to TMZ in GBM by transmitting ABCB4, which is transcribed by ATF3, through exosomes. This mechanism may lead to drug resistance and recurrence of GBM. These findings contribute to a deeper understanding of the mechanisms underlying drug resistance in GBM and provide novel insights into its treatment.
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Affiliation(s)
- Xiangdong Xu
- Department of Neuro-oncological Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, PR China
- The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, PR China
| | - Yaofeng Zheng
- Department of Neuro-oncological Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, PR China
- The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, PR China
| | - Linting Luo
- Department of Neurology, Liwan Central Hospital of Guangzhou, Guangzhou, PR China
| | - Zhongsheng You
- Department of Neuro-oncological Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, PR China
- The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, PR China
| | - Huajian Chen
- Department of Neuro-oncological Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, PR China
- The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, PR China
| | - Jihui Wang
- Department of Neuro-oncological Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, PR China
- The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, PR China
| | - Fabing Zhang
- Department of Neuro-oncological Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, PR China.
- The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, PR China.
| | - Yang Liu
- Department of Neuro-oncological Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, PR China.
- The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, PR China.
| | - Yiquan Ke
- Department of Neuro-oncological Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, PR China.
- The Neurosurgery Institute of Guangdong Province, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, PR China.
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Zhang T, Zhang Q, He X, Lu Y, Shao A, Sun X, Shao Y. Identification of Key Molecular Pathways and Associated Genes as Targets to Overcome Radiotherapy Resistance Using a Combination of Radiotherapy and Immunotherapy in Glioma Patients. Int J Mol Sci 2024; 25:3076. [PMID: 38474320 PMCID: PMC10931693 DOI: 10.3390/ijms25053076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 03/02/2024] [Accepted: 03/04/2024] [Indexed: 03/14/2024] Open
Abstract
Recent mechanistic studies have indicated that combinations of radiotherapy (RT) plus immunotherapy (via CSF-1R inhibition) can serve as a strategy to overcome RT resistance and improve the survival of glioma mice. Given the high mortality rate for glioma, including low-grade glioma (LGG) patients, it is of critical importance to investigate the mechanism of the combination of RT and immunotherapy and further translate the mechanism from mouse studies to improve survival of RT-treated human glioma patients. Using the RNA-seq data from a glioma mouse study, 874 differentially expressed genes (DEGs) between the group of RT-treated mice at glioma recurrence and the group of mice with combination treatment (RT plus CSF-1R inhibition) were translated to the human genome to identify significant molecular pathways using the KEGG enrichment analysis. The enrichment analysis yields statistically significant signaling pathways, including the phosphoinositide 3-kinase (PI3K)/AKT pathway, Hippo pathway, and Notch pathway. Within each pathway, a candidate gene set was selected by Cox regression models as genetic biomarkers for resistance to RT and response to the combination of RT plus immunotherapies. Each Cox model is trained using a cohort of 295 RT-treated LGG patients from The Cancer Genome Atlas (TCGA) database and validated using a cohort of 127 RT-treated LGG patients from the Chinese Glioma Genome Atlas (CGGA) database. A four-DEG signature (ITGB8, COL9A3, TGFB2, JAG1) was identified from the significant genes within the three pathways and yielded the area under time-dependent ROC curve AUC = 0.86 for 5-year survival in the validation set, which indicates that the selected DEGs have strong prognostic value and are potential intervention targets for combination therapies. These findings may facilitate future trial designs for developing combination therapies for glioma patients.
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Affiliation(s)
- Tianqi Zhang
- Department of Population Health, New York University Grossman School of Medicine, New York, NY 10016, USA; (T.Z.); (Q.Z.); (Y.L.)
| | - Qiao Zhang
- Department of Population Health, New York University Grossman School of Medicine, New York, NY 10016, USA; (T.Z.); (Q.Z.); (Y.L.)
| | - Xinwei He
- School of Mathematics, Sun Yat-sen University, Guangzhou 510275, China;
| | - Yuting Lu
- Department of Population Health, New York University Grossman School of Medicine, New York, NY 10016, USA; (T.Z.); (Q.Z.); (Y.L.)
| | - Andrew Shao
- Center of Data Science, New York University, New York, NY 10011, USA;
| | - Xiaoqiang Sun
- School of Mathematics, Sun Yat-sen University, Guangzhou 510275, China;
| | - Yongzhao Shao
- Department of Population Health, New York University Grossman School of Medicine, New York, NY 10016, USA; (T.Z.); (Q.Z.); (Y.L.)
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Cao Y, Su H, Zeng J, Xie Y, Liu Z, Liu F, Qiu Y, Yi F, Lin J, Hammes HP, Zhang C. Integrin β8 prevents pericyte-myofibroblast transition and renal fibrosis through inhibiting the TGF-β1/TGFBR1/Smad3 pathway in diabetic kidney disease. Transl Res 2024; 265:36-50. [PMID: 37931653 DOI: 10.1016/j.trsl.2023.10.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 10/28/2023] [Accepted: 10/30/2023] [Indexed: 11/08/2023]
Abstract
Diabetic kidney disease (DKD) is one of the leading causes to develop end-stage kidney disease worldwide. Pericytes are implicated in the development of tissue fibrosis. However, the underlying mechanisms of pericytes in DKD remain largely unknown. We isolated and cultured primary pericytes and rat mesangial cells (HBZY-1). Western blot and qRT-PCR analysis were used to explore the role and regulatory mechanism of Integrin β8/transforming growth factor beta 1 (TGF-β1) pathway. We also constructed pericyte-specific Integrin β8 knock-in mice as the research objects to determine the role of Integrin β8 in vivo. We discovered that reduced Integrin β8 expression was closely associated with pericyte transition in DKD. Overexpressed Integrin β8 in pericytes dramatically suppressed TGF-β1/TGF beta receptor 1 (TGFBR1)/Smad3 signaling pathway and protected glomerular endothelial cells (GECs) in vitro. In vivo, pericyte-specific Integrin β8 knock-in ameliorated pericyte transition, endothelium injury and renal fibrosis in STZ-induced diabetic mice. Mechanistically, Murine double minute 2 (MDM2) was found to increase the degradation of Integrin β8 and caused TGF-β1 release and activation. Knockdown MDM2 could partly reverse the decline of Integrin β8 and suppress pericytes transition. In conclusion, the present findings suggested that upregulated MDM2 expression contributes to the degradation of Integrin β8 and activation of TGF-β1/TGFBR1/Smad3 signaling pathway, which ultimately leads to pericyte transition during DKD progression. These results indicate MDM2/Integrin β8 might be considered as therapeutic targets for DKD.
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Affiliation(s)
- Yiling Cao
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Hua Su
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Jieyu Zeng
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yaru Xie
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Zezhou Liu
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Feng Liu
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yang Qiu
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Fan Yi
- Department of Pharmacology, School of Basic Medical Sciences, Shandong University, Jinan 250012, China
| | - Jihong Lin
- 5th Medical Department, Medical Faculty Mannheim, University of Heidelberg, D-68167 Mannheim, Germany
| | - Hans-Peter Hammes
- 5th Medical Department, Medical Faculty Mannheim, University of Heidelberg, D-68167 Mannheim, Germany
| | - Chun Zhang
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
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Xiong Z, Xu X, Zhang Y, Ma C, Hou C, You Z, Shu L, Ke Y, Liu Y. IFITM3 promotes glioblastoma stem cell-mediated angiogenesis via regulating JAK/STAT3/bFGF signaling pathway. Cell Death Dis 2024; 15:45. [PMID: 38218875 PMCID: PMC10787840 DOI: 10.1038/s41419-023-06416-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 12/15/2023] [Accepted: 12/22/2023] [Indexed: 01/15/2024]
Abstract
Interferon-induced transmembrane protein 3 (IFITM3) has been previously verified to be an endosomal protein that prevents viral infection. Recent findings suggested IFITM3 as a key factor in tumor invasion and progression. To clarify the role and molecular mechanism of IFITM3 in Glioblastoma multiforme (GBM) progression, we investigated the expression of IFITM3 in glioma datasets culled from The Cancer Genome Atlas (TCGA) and Chinese Glioma Genome Atlas (CGGA). Primary GBM stem cells (GSCs) were cultured and identified in vitro. Loss-of-function and gain-of-function experiments were established by using shRNAs and lentiviral vectors targeting IFITM3. Co-culture system of GSCs and vascular endothelial cells was constructed in a Transwell chamber. Tube formation and spheroid-based angiogenesis assays were performed to determine the angiogenic capacity of endothelial cells. Results revealed that IFITM3 is elevated in GBM samples and predictive of adverse outcome. Mechanistically, GSCs-derived IFITM3 causes activation of Jak2/STAT3 signaling and leads to robust secretion of bFGF into tumor environment, which eventually results in enhanced angiogenesis. Taken together, these evidence indicated IFITM3 as an essential factor in GBM angiogenesis. Our findings provide a new insight into mechanism by which IFITM3 modulates GBM angiogenesis.
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Affiliation(s)
- Zhangsheng Xiong
- Department of Neuro-oncological Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, 510060, PR China
- Key Laboratory of Neurosurgery in Guangdong Province, Southern Medical University, Guangzhou, 510060, PR China
| | - Xiangdong Xu
- Department of Neuro-oncological Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, 510060, PR China
- Key Laboratory of Neurosurgery in Guangdong Province, Southern Medical University, Guangzhou, 510060, PR China
| | - Yuxuan Zhang
- Department of Neuro-oncological Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, 510060, PR China
- Key Laboratory of Neurosurgery in Guangdong Province, Southern Medical University, Guangzhou, 510060, PR China
- Department of Neurosurgery, Institute of Neuroscience, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510260, PR China
| | - Chengcheng Ma
- Department of Neuro-oncological Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, 510060, PR China
- Key Laboratory of Neurosurgery in Guangdong Province, Southern Medical University, Guangzhou, 510060, PR China
| | - Chongxian Hou
- Department of Neuro-oncological Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, 510060, PR China
- Key Laboratory of Neurosurgery in Guangdong Province, Southern Medical University, Guangzhou, 510060, PR China
| | - Zhongsheng You
- Department of Neuro-oncological Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, 510060, PR China
- Key Laboratory of Neurosurgery in Guangdong Province, Southern Medical University, Guangzhou, 510060, PR China
| | - Lingling Shu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, PR China.
- Department of Hematological Oncology, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China.
- State Key Laboratory of Pharmaceutical Biotechnology, The University of Hong Kong, Guangzhou, PR China.
| | - Yiquan Ke
- Department of Neuro-oncological Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, 510060, PR China.
- Key Laboratory of Neurosurgery in Guangdong Province, Southern Medical University, Guangzhou, 510060, PR China.
| | - Yang Liu
- Department of Neuro-oncological Surgery, Zhujiang Hospital, Southern Medical University, Guangzhou, 510060, PR China.
- Key Laboratory of Neurosurgery in Guangdong Province, Southern Medical University, Guangzhou, 510060, PR China.
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Bickel MA, Sherry DM, Bullen EC, Vance ML, Jones KL, Howard EW, Conley SM. Microvascular smooth muscle cells exhibit divergent phenotypic switching responses to platelet-derived growth factor and insulin-like growth factor 1. Microvasc Res 2024; 151:104609. [PMID: 37716411 PMCID: PMC10842624 DOI: 10.1016/j.mvr.2023.104609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/18/2023] [Accepted: 09/09/2023] [Indexed: 09/18/2023]
Abstract
OBJECTIVE Vascular smooth muscle cell (VSMC) phenotypic switching is critical for normal vessel formation, vascular stability, and healthy brain aging. Phenotypic switching is regulated by mediators including platelet derived growth factor (PDGF)-BB, insulin-like growth factor (IGF-1), as well as transforming growth factor-β (TGF-β) and endothelin-1 (ET-1), but much about the role of these factors in microvascular VSMCs remains unclear. METHODS We used primary rat microvascular VSMCs to explore PDGF-BB- and IGF-1-induced phenotypic switching. RESULTS PDGF-BB induced an early proliferative response, followed by formation of polarized leader cells and rapid, directionally coordinated migration. In contrast, IGF-1 induced cell hypertrophy, and only a small degree of migration by unpolarized cells. TGF-β and ET-1 selectively inhibit PDGF-BB-induced VSMC migration primarily by repressing migratory polarization and formation of leader cells. Contractile genes were downregulated by both growth factors, while other genes were differentially regulated by PDGF-BB and IGF-1. CONCLUSIONS These studies indicate that PDGF-BB and IGF-1 stimulate different types of microvascular VSMC phenotypic switching characterized by different modes of cell migration. Our studies are consistent with a chronic vasoprotective role for IGF-1 in VSMCs in the microvasculature while PDGF is more involved in VSMC proliferation and migration in response to acute activities such as neovascularization. Better understanding of the nuances of the phenotypic switching induced by these growth factors is important for our understanding of a variety of microvascular diseases.
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Affiliation(s)
- Marisa A Bickel
- Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, United States of America
| | - David M Sherry
- Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, United States of America; Department of Neurosurgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, United States of America; Department of Pharmaceutical Sciences, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, United States of America
| | - Elizabeth C Bullen
- Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, United States of America
| | - Michaela L Vance
- Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, United States of America
| | - Ken L Jones
- Bioinformatic Solutions, LLC, Sheridan, WY 82801, United States of America
| | - Eric W Howard
- Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, United States of America
| | - Shannon M Conley
- Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, United States of America.
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7
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Elser M, Vehlow A, Juratli TA, Cordes N. Simultaneous inhibition of discoidin domain receptor 1 and integrin αVβ3 radiosensitizes human glioblastoma cells. Am J Cancer Res 2023; 13:4597-4612. [PMID: 37970361 PMCID: PMC10636682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 08/13/2023] [Indexed: 11/17/2023] Open
Abstract
Glioblastomas (GBM) are the most common primary brain tumors in adults and associated with poor clinical outcomes due to therapy resistances and destructive growth. Interactions of cancer cells with the extracellular matrix (ECM) play a pivotal role in therapy resistances and tumor progression. In this study, we investigate the functional dependencies between the discoidin domain receptor 1 (DDR1) and the integrin family of cell adhesion molecules for the radioresponse of human glioblastoma cells. By means of an RNA interference screen on DDR1 and all known integrin subunits, we identified co-targeting of DDR1/integrin β3 to most efficiently reduce clonogenicity, enhance cellular radiosensitivity and diminish repair of DNA double strand breaks (DSB). Simultaneous pharmacological inhibition of DDR1 with DDR1-IN-1 and of integrins αVβ3/αVβ5 with cilengitide resulted in confirmatory data in a panel of 2D grown glioblastoma cultures and 3D gliospheres. Mechanistically, we found that key DNA repair proteins ATM and DNA-PK are altered upon DDR1/integrin αVβ3/integrin αVβ5 inhibition, suggesting a link to DNA repair mechanisms. In sum, the radioresistance of human glioblastoma cells can effectively be declined by co-deactivation of DDR1, integrin αVβ3 and integrin αVβ5.
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Affiliation(s)
- Marc Elser
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden01307 Dresden, Germany
| | - Anne Vehlow
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden01307 Dresden, Germany
| | - Tareq A Juratli
- Department of Neurosurgery, Division of Neuro-Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden01307 Dresden, Germany
| | - Nils Cordes
- OncoRay - National Center for Radiation Research in Oncology, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden01307 Dresden, Germany
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Radiooncology-OncoRay01328 Dresden, Germany
- German Cancer Consortium, Partner Site Dresden, German Cancer Research Center69120 Heidelberg, Germany
- Department of Radiotherapy and Radiation Oncology, University Hospital Carl Gustav Carus, Technische Universität Dresden01307 Dresden, Germany
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8
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Voigt AP, Mullin NK, Navratil EM, Flamme-Wiese MJ, Lin LC, Scheetz TE, Han IC, Stone EM, Tucker BA, Mullins RF. Gene Expression Within a Human Choroidal Neovascular Membrane Using Spatial Transcriptomics. Invest Ophthalmol Vis Sci 2023; 64:40. [PMID: 37878301 PMCID: PMC10615143 DOI: 10.1167/iovs.64.13.40] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 10/07/2023] [Indexed: 10/26/2023] Open
Abstract
Purpose Macular neovascularization is a relatively common and potentially visually devastating complication of age-related macular degeneration. In macular neovascularization, pathologic angiogenesis can originate from either the choroid or the retina, but we have limited understanding of how different cell types become dysregulated in this dynamic process. Methods To study how gene expression is altered in focal areas of pathology, we performed spatial RNA sequencing on a human donor eye with macular neovascularization as well as a healthy control donor. We performed differential expression to identify genes enriched within the area of macular neovascularization and used deconvolution algorithms to predict the originating cell type of these dysregulated genes. Results Within the area of neovascularization, endothelial cells demonstrated increased expression of genes related to Rho family GTPase signaling and integrin signaling. Likewise, VEGF and TGFB1 were identified as potential upstream regulators that could drive the observed gene expression changes produced by endothelial and retinal pigment epithelium cells in the macular neovascularization donor. These spatial gene expression profiles were compared to previous single-cell gene expression experiments in human age-related macular degeneration as well as a model of laser-induced neovascularization in mice. As a secondary aim, we investigated regional gene expression patterns within the macular neural retina and between the macular and peripheral choroid. Conclusions Overall, this study spatially analyzes gene expression across the retina, retinal pigment epithelium, and choroid in health and describes a set of candidate molecules that become dysregulated in macular neovascularization.
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Affiliation(s)
- Andrew P. Voigt
- Department of Ophthalmology and Visual Sciences, the University of Iowa Carver College of Medicine, Iowa City, Iowa, United States
- Institute for Vision Research, the University of Iowa, Iowa City, Iowa, United States
| | - Nathaniel K. Mullin
- Department of Ophthalmology and Visual Sciences, the University of Iowa Carver College of Medicine, Iowa City, Iowa, United States
- Institute for Vision Research, the University of Iowa, Iowa City, Iowa, United States
| | - Emma M. Navratil
- Department of Ophthalmology and Visual Sciences, the University of Iowa Carver College of Medicine, Iowa City, Iowa, United States
- Institute for Vision Research, the University of Iowa, Iowa City, Iowa, United States
| | - Miles J. Flamme-Wiese
- Department of Ophthalmology and Visual Sciences, the University of Iowa Carver College of Medicine, Iowa City, Iowa, United States
- Institute for Vision Research, the University of Iowa, Iowa City, Iowa, United States
| | - Li-Chun Lin
- University of Iowa Neuroscience Institute, the University of Iowa Carver College of Medicine, Iowa City, Iowa, United States
| | - Todd E. Scheetz
- Department of Ophthalmology and Visual Sciences, the University of Iowa Carver College of Medicine, Iowa City, Iowa, United States
- Institute for Vision Research, the University of Iowa, Iowa City, Iowa, United States
| | - Ian C. Han
- Department of Ophthalmology and Visual Sciences, the University of Iowa Carver College of Medicine, Iowa City, Iowa, United States
- Institute for Vision Research, the University of Iowa, Iowa City, Iowa, United States
| | - Edwin M. Stone
- Department of Ophthalmology and Visual Sciences, the University of Iowa Carver College of Medicine, Iowa City, Iowa, United States
- Institute for Vision Research, the University of Iowa, Iowa City, Iowa, United States
| | - Budd A. Tucker
- Department of Ophthalmology and Visual Sciences, the University of Iowa Carver College of Medicine, Iowa City, Iowa, United States
- Institute for Vision Research, the University of Iowa, Iowa City, Iowa, United States
| | - Robert F. Mullins
- Department of Ophthalmology and Visual Sciences, the University of Iowa Carver College of Medicine, Iowa City, Iowa, United States
- Institute for Vision Research, the University of Iowa, Iowa City, Iowa, United States
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9
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Mahajan S, Schmidt MHH. Distinct Lineage of Slow-Cycling Cells Amidst the Prevailing Heterogeneity in Glioblastoma. Cancers (Basel) 2023; 15:3843. [PMID: 37568659 PMCID: PMC10417372 DOI: 10.3390/cancers15153843] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 07/25/2023] [Indexed: 08/13/2023] Open
Abstract
Glioblastoma (GBM) is the most aggressive form of primary brain tumor in adults [...].
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Affiliation(s)
| | - Mirko H. H. Schmidt
- Institute of Anatomy, Medical Faculty Carl Gustav Carus, Technische Universität Dresden School of Medicine, Fetscherstr 74, 01307 Dresden, Germany
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10
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Voigt AP, Mullin NK, Navratil EM, Flamme-Wiese MJ, Lin LC, Scheetz TE, Han IC, Stone EM, Tucker BA, Mullins RF. GENE EXPRESSION WITHIN A HUMAN CHOROIDAL NEOVASCULAR MEMBRANE USING SPATIAL TRANSCRIPTOMICS. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.06.16.544770. [PMID: 37398429 PMCID: PMC10312719 DOI: 10.1101/2023.06.16.544770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2023]
Abstract
Macular neovascularization is a relatively common and potentially visually devastating complication of age-related macular degeneration. In macular neovascularization, pathologic angiogenesis can originate from either the choroid or the retina, but we have limited understanding of how different cell types become dysregulated in this dynamic process. In this study, we performed spatial RNA sequencing on a human donor eye with macular neovascularization as well as a healthy control donor. We identified genes enriched within the area of macular neovascularization and used deconvolution algorithms to predict the originating cell type of these dysregulated genes. Within the area of neovascularization, endothelial cells were predicted to increase expression of genes related to Rho family GTPase signaling and integrin signaling. Likewise, VEGF and TGFB1 were identified as potential upstream regulators that could drive the observed gene expression changes produced by endothelial and retinal pigment epithelium cells in the macular neovascularization donor. These spatial gene expression profiles were compared to previous single-cell gene expression experiments in human age-related macular degeneration as well as a model of laser-induced neovascularization in mice. As a secondary aim, we also investigated spatial gene expression patterns within the macular neural retina and between the macular and peripheral choroid. We recapitulated previously described regional-specific gene expression patterns across both tissues. Overall, this study spatially analyzes gene expression across the retina, retinal pigment epithelium, and choroid in health and describes a set of candidate molecules that become dysregulated in macular neovascularization.
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Affiliation(s)
- Andrew P. Voigt
- Department of Ophthalmology and Visual Sciences, the University of Iowa Carver College of Medicine, Iowa City, IA, 52242
- Institute for Vision Research, the University of Iowa, Iowa City, IA, 52242
| | - Nathaniel K. Mullin
- Department of Ophthalmology and Visual Sciences, the University of Iowa Carver College of Medicine, Iowa City, IA, 52242
- Institute for Vision Research, the University of Iowa, Iowa City, IA, 52242
| | - Emma M. Navratil
- Department of Ophthalmology and Visual Sciences, the University of Iowa Carver College of Medicine, Iowa City, IA, 52242
- Institute for Vision Research, the University of Iowa, Iowa City, IA, 52242
| | - Miles J. Flamme-Wiese
- Department of Ophthalmology and Visual Sciences, the University of Iowa Carver College of Medicine, Iowa City, IA, 52242
- Institute for Vision Research, the University of Iowa, Iowa City, IA, 52242
| | - Li-Chun Lin
- University of Iowa Neuroscience Institute, the University of Iowa Carver College of Medicine, Iowa City, IA, 52242
| | - Todd E. Scheetz
- Department of Ophthalmology and Visual Sciences, the University of Iowa Carver College of Medicine, Iowa City, IA, 52242
- Institute for Vision Research, the University of Iowa, Iowa City, IA, 52242
| | - Ian C. Han
- Department of Ophthalmology and Visual Sciences, the University of Iowa Carver College of Medicine, Iowa City, IA, 52242
- Institute for Vision Research, the University of Iowa, Iowa City, IA, 52242
| | - Edwin M. Stone
- Department of Ophthalmology and Visual Sciences, the University of Iowa Carver College of Medicine, Iowa City, IA, 52242
- Institute for Vision Research, the University of Iowa, Iowa City, IA, 52242
| | - Budd A. Tucker
- Department of Ophthalmology and Visual Sciences, the University of Iowa Carver College of Medicine, Iowa City, IA, 52242
- Institute for Vision Research, the University of Iowa, Iowa City, IA, 52242
| | - Robert F. Mullins
- Department of Ophthalmology and Visual Sciences, the University of Iowa Carver College of Medicine, Iowa City, IA, 52242
- Institute for Vision Research, the University of Iowa, Iowa City, IA, 52242
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