Supplementary Table 1 A list of the secreted proteins differentially expressed by GSCs relative to matched non-stem tumour cells (NSTCs) from primary GBMs.

The data were obtained through RT-qPCR analysis (qPCR array) of mRNA expression of a series of secreted proteins in matched GSCs and NSTCs (data from 3 biologically independent samples). Periostin (POSTN) was identified as a preferentially and highly expressed cytokine by GSCs in this small-scale expression profiling analysis of secreted proteins.