TABLE 3

Comparative expression of phase 2 enzymes and liver-specific protein mRNA in HepaRG cells, freshly isolated human hepatocytes, and HepG2 cells

Results are expressed as percentage compared to freshly isolated human hepatocytes (FIH) arbitrarily set at 100%. FIH correspond to a pool of three different cell populations. Results are the mean of two independent experiments in duplicate.




GSTA1/2

GSTA4

GSTM1

UGT1A1

Aldolase B

Haptoglobin

Albumin

AFP

Thioredoxin
FIH 100 100 100 100 100 100 100 100 100
HepG2 cells 0.2 2.1 2.4 5.2 0 5.1 12.3 89,011 115.8
HepaRG cells seeded at low density (days)
    5 0.4 6.7 8.5 7.4 0 5.1 1.8 0.6 1250.6
    8 8 5.9 7.6 9 0.2 76.4 14.1 21 877
    15 37.3 9 9.8 10.5 7.8 199.9 85.6 75.6 422
    30 36.8 13.1 15.5 17.1 20.9 256.6 82.9 79.4 303.4
    30 (DMSO) 108.6 22.6 26.3 186.3 13.5 216.4 70.7 45.8 304.4
    35 (- DMSO 24 h) 35.7 3.9 5 43 8.7 294.1 63.1 71.3 610.2
    37 (- DMSO 72 h) 18.3 5.8 6.8 35.4 9.6 344.7 77.9 64.8 479.7
HepaRG cells seeded at high density after differentiation
    + DMSO 24 h 258.2 26.4 33.6 240.6 16.3 197.5 57.1 40.2 429.8
    - DMSO 24 h 50 4.2 5.8 82.4 7.3 344.8 47.2 54 790.9
    + DMSO 72 h 160.3 36.7 45.1 221.1 14.9 196.6 60.4 36.9 280.9
    - DMSO 72 h
31.3
9.7
7.5
47.3
9.4
479.8
65.2
114
460.9