| abstract |
Provided herein are methods for determining the presence of cancer (malignant versus benign), monitoring the progression of cancer, monitoring cancer relapse, monitoring the response to cancer therapy, or cancer staging in a subject, by evaluating CD33 + /HLA-DR low , CD14 30 /HLA-DR low , CD66b + /HLA-DR low or, CD11b + /HLA-DR low MDSC for activation of a transcription factor. Transcription factors include, but are not limited to, STAT3, pSTAT3, HIF1α, or C/EBPβ. The MDSC phenotype can be CD33 + HLA-DR low HIF1α + /STAT3 + , CD14 + HLA-DR low HIF1α + /STAT3 + /pSTAT3 + /C/EBPb + , CD66b + HLA-DR low HIF1α + /STAT3 + /pSTAT3 + /C/EBPb + , CD33 + HLA-DR low HIF1α + /STAT3 + /pSTAT3 + /C/EBPb + , CD11b + HLA-DR low HIF1α + /STAT3 + /pSTAT3 + /C/EBPb + , or CD11b + HLA-DR low C/EBPβ + . Also provided herein are methods for inducing human MDSC from healthy donor peripheral blood mononuclear cells (PBMC) by co-culturing PBMC with human solid tumor cell lines and subsequently measuring their suppressive ability. |