title: Three-dimensional (3D) culture of bone-derived human 786-O renal cell carcinoma retains relevant clinical characteristics of bone metastases.
abstract: Bone metastases from renal cell carcinoma (RCC) are typically lytic, destructive, and resistant to treatment regimens. Current in vitro models for studying metastasis introduce artifacts that limit their usefulness. Many features of tumors growing in bone are lost when human RCC cells are cultured in two-dimensional (2D) plastic substrata. In this study, we established that RCC spheroids, consisting of aggregates of cells, can be grown in a three-dimensional (3D) hyaluronate hydrogel-based culture system. The bone-derived human 786-O RCC subline proliferated and survived long term in these hydrogels. Additionally, RCC spheroids in 3D hydrogels demonstrated lower proliferation rates than their counterparts grown in 2D. Overall, gene expression patterns of RCC spheroids in 3D more closely mimicked those observed in vivo than did those of cells grown in 2D. Of particular importance, selected adhesion molecules, angiogenesis factors, and osteolytic factors that have been shown to be involved in RCC bone metastasis were found to be expressed at higher levels in 3D than in 2D cultures. We propose that the 3D culture system provides an improved platform for RCC bone metastasis studies compared with 2D systems.
authors.affiliation: Department of Orthopaedic Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
authors.forename: Tianhong
authors.initials: T
authors.lastname: Pan
authors.affiliation: Department of Bioengineering, Rice University, Houston, TX, USA.
authors.forename: Eliza L S
authors.initials: EL
authors.lastname: Fong
authors.affiliation: Department of BioSciences, Rice University, Houston, TX, USA.
authors.forename: Mariane
authors.initials: M
authors.lastname: Martinez
authors.affiliation: Department of BioSciences, Rice University, Houston, TX, USA.
authors.forename: Daniel A
authors.initials: DA
authors.lastname: Harrington
authors.affiliation: Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
authors.forename: Sue-Hwa
authors.initials: SH
authors.lastname: Lin
authors.affiliation: Department of Bioengineering, Rice University, Houston, TX, USA; Department of BioSciences, Rice University, Houston, TX, USA.
authors.forename: Mary C
authors.initials: MC
authors.lastname: Farach-Carson
authors.affiliation: Department of Orthopaedic Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA. Electronic address: rlsatcher@mdanderson.org.
authors.forename: Robert L
authors.initials: RL
authors.lastname: Satcher
mesh_terms: D042501:Angiogenic Proteins / Q000235:genetics / Q000378:metabolism; D000818:Animals; D014408:Biomarkers, Tumor / Q000235:genetics / Q000378:metabolism; D001859:Bone Neoplasms / Q000235:genetics / Q000378:metabolism / Q000556:secondary*; D002292:Carcinoma, Renal Cell / Q000235:genetics / Q000378:metabolism / Q000556:secondary*; D015815:Cell Adhesion Molecules / Q000235:genetics / Q000378:metabolism; D018929:Cell Culture Techniques; D049109:Cell Proliferation; D002469:Cell Separation; D048430:Cell Shape; D002470:Cell Survival; D015972:Gene Expression Regulation, Neoplastic; D006801:Humans; D006820:Hyaluronic Acid / Q000378:metabolism; D020100:Hydrogels; D007680:Kidney Neoplasms / Q000235:genetics / Q000378:metabolism / Q000473:pathology*; D016513:Mice, SCID; D010014:Osteolysis / Q000235:genetics / Q000378:metabolism / Q000473:pathology; D010641:Phenotype; D012333:RNA, Messenger / Q000378:metabolism; D018874:Spheroids, Cellular; D013997:Time Factors; D014407:Tumor Cells, Cultured
chemical_list: D042501:Angiogenic Proteins; D014408:Biomarkers, Tumor; D015815:Cell Adhesion Molecules; D020100:Hydrogels; D012333:RNA, Messenger; D006820:Hyaluronic Acid
keywords: Bone metastasis; Hyaluronic acid; Hydrogel; Renal cell carcinoma; Three dimensional culture