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Table 3 Gene-function analysis of all differentially expressed genes between PDAC xenograft SP and MP using DAVID

From: Human pancreatic adenocarcinoma contains a side population resistant to gemcitabine

A. ENRICHED GENE CLUSTERS

Gene group 1: Transcription Factors Enrichment Score: 1.78

1

TCF7L1

transcription factor 7-like 1 (T-cell specific, HMG-box)

2

SNAI2

snail homolog 2 (Drosophila)

3

CNOT4

CCR4-NOT transcription complex, subunit 4

4

ZBTB10

zinc finger and BTB domain containing 10

5

KLF12

Kruppel-like factor 12

6

ZFPM2

zinc finger protein, multitype 2

7

STAT4

signal transducer and activator of transcription 4

8

OSR2

odd-skipped related 2 (Drosophila)

9

IKZF2

IKAROS family zinc finger 2 (Helios)

10

PHF6

PHD finger protein 6

11

ZFHX4

zinc finger homeobox 4

12

SOX11

SRY (sex determining region Y)-box 11

13

CITED4

Cbp/p300-interacting transactivator, with Glu/Asp-rich carboxy-terminal domain, 4

14

ARNTL

aryl hydrocarbon receptor nuclear translocator-like

15

NFIB

nuclear factor I/B

16

GATA1

GATA binding protein 1 (globin transcription factor 1)

17

ETS

v-ets erythroblastosis virus E26 oncogene homolog 1 (avian)

18

LEF1

lymphoid enhancer-binding factor 1

Gene group 2: Adhesion Molecules Enrichment Score: 1.71

1

HLA-DPB1

major histocompatibility complex, class II, DP beta 1

2

MADCAM1

mucosal vascular addressin cell adhesion molecule 1

3

TREM2

triggering receptor expressed on myeloid cells 2

4

EFNB2

ephrin-B2

5

IGSF6

immunoglobulin superfamily, member 6

6

LRFN5

leucine rich repeat and fibronectin type III domain containing 5

7

DSCAM

Down syndrome cell adhesion molecule

8

JAM2

junctional adhesion molecule 2

9

MDGA1

MAM domain containing glycosylphosphatidylinositol anchor 1

Gene group 3: Homeobox Genes Enrichment Score: 1.51

1

PKNOX2

PBX/knotted 1 homeobox 2

2

MEOX2

mesenchyme homeobox 2

3

SPIC

Spi-C transcription factor (Spi-1/PU.1 related)

4

IRX2

iroquois homeobox 2

5

EMX2

empty spiracles homeobox 2

B. KEGG PATHWAYS

Upregulated in SP

 

Number of genes

genes

Arrhythmogenic rightventricular cardiomyopathy

4

GJA1, ITGB3, LEF1, TCFL1

Pathways in cancer

6

TCF7L1, KITL, FASL, LEF1, FGF7, ETS1

Adherens junction

3

LEF1, SNAI2, TCF7L1

Downregulated in SP

 

Number of genes

genes

Lysosome

3

CTSA, CTSC, SLC11A1

Cell adhesion molecules (CAMs)

3

CADM1, HLA-DPB1, MADCAM1