Potential effect of matrix stiffness on the enrichment of tumor initiating cells under three-dimensional culture conditions

Cancer stem cell (CSC) or tumor initiating cell (TIC) plays an important role in tumor progression and metastasis. Biophysical forces in tumor microenvironment have an important effect on tumor formation and development. In this study, the potential effect of matrix stiffness on the biological chara...

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Veröffentlicht in:Experimental cell research 2015-01, Vol.330 (1), p.123-134
Hauptverfasser: Liu, Chang, Liu, Yang, Xu, Xiao-xi, Wu, Hao, Xie, Hong-guo, Chen, Li, Lu, Ting, Yang, Li, Guo, Xin, Sun, Guang-wei, Wang, Wei, Ma, Xiao-jun, He, Xin
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container_issue 1
container_start_page 123
container_title Experimental cell research
container_volume 330
creator Liu, Chang
Liu, Yang
Xu, Xiao-xi
Wu, Hao
Xie, Hong-guo
Chen, Li
Lu, Ting
Yang, Li
Guo, Xin
Sun, Guang-wei
Wang, Wei
Ma, Xiao-jun
He, Xin
description Cancer stem cell (CSC) or tumor initiating cell (TIC) plays an important role in tumor progression and metastasis. Biophysical forces in tumor microenvironment have an important effect on tumor formation and development. In this study, the potential effect of matrix stiffness on the biological characteristics of human head and neck squamous cell carcinoma (HNSCC) TICs, especially the enrichment of HNSCC TICs, was investigated under three-dimensional (3D) culture conditions by means of alginate gel (ALG) beads with different matrix stiffnesses. ALG beads with soft (21kPa), moderate (70kPa) and hard (105kPa) stiffness were generated by changing alginate concentration. It was found that significant HNSCC TIC enrichment was achieved in the ALG beads with moderate matrix stiffness (70kPa). The gene expression of stemness markers Oct3/4 and Nanog, TIC markers CD44 and ABCG2 was enhanced in cells under this moderate (70kPa) stiffness. HNSCC TIC proportion was also highly enriched under moderate matrix stiffness, accompanying with higher tumorigenicity, metastatic ability and drug resistance. And it was also found that the possible molecular mechanism underlying the regulated TIC properties by matrix stiffness under 3D culture conditions was significantly different from 2D culture condition. Therefore, the results achieved in this study indicated that 3D biophysical microenvironment had an important effect on TIC characteristics and alginate-based biomimetic scaffolds could be utilized as a proper platform to investigate the interaction between tumor cells and 3D microenvironment. •Effect of matrix stiffness on TIC characteristics in 3D system was investigated.•Matrix stiffness played an important role in regulating HNSCC TIC characteristics.•The underlying mechanism between matrix stiffness and TICs was also explored.
doi_str_mv 10.1016/j.yexcr.2014.07.036
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Biophysical forces in tumor microenvironment have an important effect on tumor formation and development. In this study, the potential effect of matrix stiffness on the biological characteristics of human head and neck squamous cell carcinoma (HNSCC) TICs, especially the enrichment of HNSCC TICs, was investigated under three-dimensional (3D) culture conditions by means of alginate gel (ALG) beads with different matrix stiffnesses. ALG beads with soft (21kPa), moderate (70kPa) and hard (105kPa) stiffness were generated by changing alginate concentration. It was found that significant HNSCC TIC enrichment was achieved in the ALG beads with moderate matrix stiffness (70kPa). The gene expression of stemness markers Oct3/4 and Nanog, TIC markers CD44 and ABCG2 was enhanced in cells under this moderate (70kPa) stiffness. HNSCC TIC proportion was also highly enriched under moderate matrix stiffness, accompanying with higher tumorigenicity, metastatic ability and drug resistance. 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Therefore, the results achieved in this study indicated that 3D biophysical microenvironment had an important effect on TIC characteristics and alginate-based biomimetic scaffolds could be utilized as a proper platform to investigate the interaction between tumor cells and 3D microenvironment. •Effect of matrix stiffness on TIC characteristics in 3D system was investigated.•Matrix stiffness played an important role in regulating HNSCC TIC characteristics.•The underlying mechanism between matrix stiffness and TICs was also explored.</description><identifier>ISSN: 0014-4827</identifier><identifier>EISSN: 1090-2422</identifier><identifier>DOI: 10.1016/j.yexcr.2014.07.036</identifier><identifier>PMID: 25108138</identifier><language>eng</language><publisher>United States: Elsevier Inc</publisher><subject>3-D technology ; Alginate gel beads ; Alginates - pharmacology ; ATP Binding Cassette Transporter, Sub-Family G, Member 2 ; ATP-Binding Cassette Transporters - genetics ; ATP-Binding Cassette Transporters - metabolism ; Carcinoma, Squamous Cell - metabolism ; Cell culture ; Cell Line, Tumor ; Extracellular Matrix - chemistry ; Extracellular Matrix - metabolism ; Gene expression ; Head &amp; neck cancer ; Head and Neck Neoplasms - metabolism ; Homeodomain Proteins - genetics ; Homeodomain Proteins - metabolism ; Humans ; Hyaluronan Receptors - genetics ; Hyaluronan Receptors - metabolism ; Matrix stiffness ; Metastasis ; Nanog Homeobox Protein ; Neoplasm Proteins - genetics ; Neoplasm Proteins - metabolism ; Neoplastic Stem Cells - drug effects ; Neoplastic Stem Cells - metabolism ; Octamer Transcription Factor-3 - genetics ; Octamer Transcription Factor-3 - metabolism ; Three-dimensional culture ; Tumor initiating cells ; Tumor Microenvironment ; Tumorigenesis</subject><ispartof>Experimental cell research, 2015-01, Vol.330 (1), p.123-134</ispartof><rights>2014 Elsevier Inc.</rights><rights>Copyright © 2014 Elsevier Inc. 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Biophysical forces in tumor microenvironment have an important effect on tumor formation and development. In this study, the potential effect of matrix stiffness on the biological characteristics of human head and neck squamous cell carcinoma (HNSCC) TICs, especially the enrichment of HNSCC TICs, was investigated under three-dimensional (3D) culture conditions by means of alginate gel (ALG) beads with different matrix stiffnesses. ALG beads with soft (21kPa), moderate (70kPa) and hard (105kPa) stiffness were generated by changing alginate concentration. It was found that significant HNSCC TIC enrichment was achieved in the ALG beads with moderate matrix stiffness (70kPa). The gene expression of stemness markers Oct3/4 and Nanog, TIC markers CD44 and ABCG2 was enhanced in cells under this moderate (70kPa) stiffness. HNSCC TIC proportion was also highly enriched under moderate matrix stiffness, accompanying with higher tumorigenicity, metastatic ability and drug resistance. And it was also found that the possible molecular mechanism underlying the regulated TIC properties by matrix stiffness under 3D culture conditions was significantly different from 2D culture condition. Therefore, the results achieved in this study indicated that 3D biophysical microenvironment had an important effect on TIC characteristics and alginate-based biomimetic scaffolds could be utilized as a proper platform to investigate the interaction between tumor cells and 3D microenvironment. •Effect of matrix stiffness on TIC characteristics in 3D system was investigated.•Matrix stiffness played an important role in regulating HNSCC TIC characteristics.•The underlying mechanism between matrix stiffness and TICs was also explored.</abstract><cop>United States</cop><pub>Elsevier Inc</pub><pmid>25108138</pmid><doi>10.1016/j.yexcr.2014.07.036</doi><tpages>12</tpages></addata></record>
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subjects 3-D technology
Alginate gel beads
Alginates - pharmacology
ATP Binding Cassette Transporter, Sub-Family G, Member 2
ATP-Binding Cassette Transporters - genetics
ATP-Binding Cassette Transporters - metabolism
Carcinoma, Squamous Cell - metabolism
Cell culture
Cell Line, Tumor
Extracellular Matrix - chemistry
Extracellular Matrix - metabolism
Gene expression
Head & neck cancer
Head and Neck Neoplasms - metabolism
Homeodomain Proteins - genetics
Homeodomain Proteins - metabolism
Humans
Hyaluronan Receptors - genetics
Hyaluronan Receptors - metabolism
Matrix stiffness
Metastasis
Nanog Homeobox Protein
Neoplasm Proteins - genetics
Neoplasm Proteins - metabolism
Neoplastic Stem Cells - drug effects
Neoplastic Stem Cells - metabolism
Octamer Transcription Factor-3 - genetics
Octamer Transcription Factor-3 - metabolism
Three-dimensional culture
Tumor initiating cells
Tumor Microenvironment
Tumorigenesis
title Potential effect of matrix stiffness on the enrichment of tumor initiating cells under three-dimensional culture conditions
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