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- W2793606391 abstract "Malignant cells cultured in three-dimensional (3D) models have been found to be phenotypically and biochemically different from their counterparts cultured conventionally. Since most of these studies employed solid tumor types, how 3D culture affects multiple myeloma (MM) cells is not well understood. Here, we compared MM cells (U266 and RPMI8226) in a 3D culture model with those in conventional culture. While the conventionally cultured cells were present in single cells or small clusters, MM-3D cells grew in large spheroids. We discovered that STAT3 was the pathway that was more activated in 3D in both cell lines. The active form of STAT3 (phospho-STAT3 or pSTAT3), which was absent in MM cells cultured conventionally, became detectable after 1–2 days in 3D culture. This elevated pSTAT3 level was dependent on the 3D environment, since it disappeared after transferring to conventional culture. STAT3 inhibition using a pharmacological agent, Stattic, significantly decreased the cell viability of MM cells and sensitized them to bortezomib in 3D culture. Using an oligonucleotide array, we found that 3D culture significantly increased the expression of several known STAT3 downstream genes implicated in oncogenesis. Since most primary MM tumors are naturally STAT3-active, studies of MM in 3D culture can generate results that are more representative of the disease." @default.
- W2793606391 created "2018-03-29" @default.
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- W2793606391 date "2018-06-16" @default.
- W2793606391 modified "2023-09-23" @default.
- W2793606391 title "Constitutive Activation of STAT3 in Myeloma Cells Cultured in a Three-Dimensional, Reconstructed Bone Marrow Model" @default.
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- W2793606391 doi "https://doi.org/10.3390/cancers10060206" @default.
- W2793606391 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6024941" @default.
- W2793606391 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/29914181" @default.
- W2793606391 hasPublicationYear "2018" @default.
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