Research Article

Enhanced 4-Hydroxynonenal Resistance in KEAP1 Silenced Human Colon Cancer Cells

Table 1

Increased genes by genetic activation of NRF2 in human colon carcinoma HT29 cells.

GeneDescriptionFold change by KEAP1 knockdown
(KEAP1 knockdown/sc control)

Direct antioxidant proteins

SOD1 Superoxide dismutase 1
SOD2 Superoxide dismutase 2
GPX1 Glutathione peroxidase 1
GPX2 Glutathione peroxidase 21.88
PRDX6 Peroxiredoxin 6
MT1A Metallothionein 1A1.78
MT2A Metallothionein 2A

Thiol biosynthesis and recycling enzymes

GCLC Glutamate-cysteine ligase, catalytic subunit2.50
GCLM Glutamate-cysteine ligase, modifier subunit2.34
GSR Glutathione reductase1.66
TXN Thioredoxin1.83
TXNRD Thioredoxin reductase2.23

Conjugation enzymes

GSTA2 Glutathione S-transferase A21.64
GSTA3 Glutathione S-transferase A32.48
GSTM1 Glutathione S-transferase Mu 11.57
GSTM2 Glutathione S-transferase Mu 22.51
MGST2 Microsomal glutathione S-transferase 1
UGT1A1 UDP glucuronosyltransferase 1A1
UGT1A6 UDP glucuronosyltransferase 1A62.60
SULT2A1 Sulfotransferase family 2A1

Reductase and hydrolase

NQO1 NAD(P)H:quinone oxidoreductase 12.26
EPHX1 Epoxide hydrolase 12.50
ALDH Aldehyde dehydrogenase
AKR1C1/2   Aldo-keto reductase family 1C1/2 24.08
AKR1C2 Aldo-keto reductase family 1C234.64
AKR1C3 Aldo-keto reductase family 1C36.44
AKR1B1 Aldo-keto reductase family 1B12.02
AKR1B10  Aldo-keto reductase family 1B106.56

Stress response proteins

HMOX1   Heme oxygenase 11.62
FTH1 Ferritin, heavy polypeptide 1

Drug transporters

MRP2 Multidrug resistance associated protein 210.23
MRP3 Multidrug resistance associated protein 31.82

Values are means from three experiments. Genes that were increased less than 1.5-fold cut off are denoted by a dash (—).