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- _5 value "The expression of SPARC (secreted protein, acidic, cysteine-rich) was statistically significantly down-regulated in NPC cells. In exploring the mechanism underlying the decreased transcription of SPARC in NPC cells, we found that the transcription factor SRY (sex-determining region Y)-box 5 (SOX-5) is up-regulated in NPC cells. RNA interference of SOX-5 by short hairpin RNA (shRNA) in NPC cells caused a dramatic increase in SPARC and chromosome immunoprecipitation assay showed that SOX-5 can bind directly to the SPARC promoter, suggesting that SOX-5 acts as a key transcriptional repressor of SPARC. " provenance.
- _5 wasQuotedFrom 18085523 provenance.