APPLICATIONS / DATABASESSUPPLEMENTAL DATAFACULTYMIRROR SITESCOLLABORATIVE PROJECTSDEPARTMENTS

   
 

back to table of contents



D. COMMON GENE EXPRESSION CHANGES AFTER ALL TREATMENTS

Fig. 6: Commonly regulated genes after all four initial treatments.

Displayed are the median and the inter-quantile range of the 17 genes that exhibited higher expression after treatment (red) or lower expression after treatment (green), in at least 70% of patients, across all four treatments (Wilcoxon’s rank sum test P<0.01).

Table 4 (a) and (b): Changes in gene expression after single agent chemotherapy versus the same agents in combination

(a) Of the 97 gene probe sets that changed by more than 50% in at least 70% of patients after treatment with HDMTX alone, 38 increased and 59 decreased. As shown in Table D (1) below, only 21.1% of genes (8/38) that were up-regulated after HDMTX alone were also up-regulated when HDMTX was given with MP. Further, only 11.9% of genes (7/59) were down-regulated after HDMTX alone and also down-regulated after HDMTX when given with MP. The genes that concordantly changed after HDMTX alone and after HDMTX+MP are listed below. Negative numbers indicate a decrease and positive an increase in expression.

(a)

probe
set ID

accession number

gene name

median
FC
HDMTX

median
FC HDMTX+MP

36161_at

M34175

adaptor-related protein complex 2, beta 1 subunit

5.7

3.6

37277_at

U80017

baculoviral IAP repeat-containing 1

2.6

2.4

38819_at

U33635

PTK7 protein tyrosine kinase 7

2.5

2.4

36651_at

X15525

acid phosphatase 2, lysosomal

2.5

1.9

40123_at

D87435

golgi-specific brefeldin A resistance factor 1

2.2

2.0

34279_at

AL050141

hypothetical protein FLJ20719

2.0

2.5

32125_at

AA928996

Tho2

1.9

3.0

38464_at

X87237

glucosidase I

1.9

3.2

36432_at

AL079298

methylcrotonoyl-Coenzyme A carboxylase 2 (beta)

-1.8

-2.0

35074_at

AF004715

jerky homolog-like (mouse)

-1.9

-2.5

36246_at

Z35309

adenylate cyclase 8 (brain)

-2.2

-2.8

32413_at

M13934

 

-2.8

-2.4

32583_at

J04111

v-jun sarcoma virus 17 oncogene homolog (avian)

-3.5

-2.3

725_i_at

J03071

 

-4.0

-5.5

1915_s_at

V01512

 

-5.7

-2.4

b) Of the 197 probe sets that changed by more than 50% in at least 70% of patients after treatment with MP alone 40 increased and 157 decreased. As shown in Table 4 (b) below, only 17.5% of genes (7/40) that were up-regulated after MP alone were also up-regulated when MP was given with HDMTX and only 11.4% of genes (18/157) that were down-regulated after MP alone were also down-regulated after MP when given with HDMTX. The genes that concordantly changed after MP alone and after HDMTX+MP are listed below. Negative numbers indicate a decrease and positive an increase in expression.

(b)

probe
set ID

accession number

gene name

median FC
MP

median
FC HDMTX+MP

36161_at

M34175

adaptor-related protein complex 2, beta 1 subunit

4.0

3.6

32125_at

AA928996

Tho2

2.5

3.0

35436_at

L06147

golgi autoantigen, golgin subfamily a, 2

2.1

2.5

34836_at

U18420

RAB5C, member RAS oncogene family

2.0

1.9

36822_at

U51334

TAF15 RNA polymerase II, TATA box binding protein

2.0

1.9

37277_at

U80017

baculoviral IAP repeat-containing 1

2.0

2.4

38915_at

AB011135

KIAA0563 gene product

2.0

1.9

31652_at

AB023217

KIAA1000 protein

-1.9

-2.2

41117_s_at

AB016243

solute carrier family 9 (sodium/hydrogen exchanger)

-2.0

-1.7

38146_at

AB011107

zinc finger protein 387

-2.1

-3.5

940_g_at

D12625

neurofibromin 1 

-2.1

-1.7

31785_f_at

U92817

unnamed HERV-H protein

-2.3

-2.5

34702_f_at

M27826

chorionic somatomammotropin hormone 2

-2.3

-2.9

41303_r_at

AI378632

Homo sapiens mRNA; cDNA DKFZp564P233

-2.5

-3.6

450_g_at

U66469

cell growth regulatory with ring finger domain

-2.5

-1.9

40590_at

AA166687

cell division cycle 27

-2.8

-7.7

31529_at

X99141

keratin, hair, basic, 3

-3.0

-2.1

39407_at

M22488

bone morphogenetic protein 1

-3.0

-4.3

33047_at

AI971169

ESTs, Highly similar to  BCL2-like 11

-3.2

-2.1

34704_r_at

AA151971

chorionic somatomammotropin hormone 2

-3.5

-3.0

40387_at

U80811

endothelial differentiation,G-protein-coupled receptor

-3.5

-3.7

32583_at

J04111

v-jun sarcoma virus 17 oncogene homolog (avian)

-3.7

-2.3

39586_at

AF097935

desmoglein 1

-4.0

-3.0

1915_s_at

V01512

 

-4.9

-2.4

725_i_at

J03071

 

-9.2

-5.5


Table 5 (a) and (b): Human leukemia cell lines differ from primary ALL cells.

(a) When the treatment with HDMTX alone (12 nM x 24 h plus 18 h drug-free media) was recapitulated (i.e., comparable level of cytotoxicity), with two human ALL cell lines in vitro (i.e., B-lineage Nalm6 [N.MTX] and T-lineage CEM [C.MTX]), we found very little overlap in the genes that changed after treatment in the cell lines compared to the primary leukemia cells in patients. Specifically, only seven out of the 97 genes (7.2%) that changed by more than 50% in at least 70% of patients after HDMTX also changed on average by more than 50% in the cell lines. Table 5 (a) lists the genes that concordantly change after HDMTX in cell lines and in patients, negative numbers indicate a decrease and positive an increase in expression.

(a)

probe set ID

accession number

gene name

median
FC

N.MTX

median
FC

C.MTX

median
FC
HDMTX

32264_at

L23134

granzyme M (lymphocyte met-ase 1)

1.9

1.6

2.9

36591_at

X06956

tubulin, alpha 1 (testis specific)

1.9

1.2

1.9

33143_s_at

U81800

solute carrier family 16 (monocarboxylic acid transporters),

1.5

1.7

3.6

2067_f_at

L22475

BCL2-associated X protein

7.0

1.0

3.7

2001_g_at

U26455

ataxia telangiectasia mutated

2.1

1.6

2.5

35692_at

AL080235

Ras-induced senescence 1

-2.6

-1.0

-2.5

1916_s_at

V01512

c-fos FBJ murine osteosarcoma viral oncogene homolog

-1.4

-1.9

-11.3

(b) When the treatment with MP alone (10 µM x 24 h) was recapitulated with two human ALL cell lines in vitro (i.e., B-lineage Nalm6 [N.MP] and T-lineage CEM [C.MP]), we found very little overlap in the genes that changed after treatment in the cell lines compared to the primary leukemia cells in patients. Only 27 of the 197 genes (13.7%) changed in a consistent manner by more than 50% after MP treatment of cell lines and primary cells in vivo. Table 5 (b) lists the genes that concordantly changed after MP in cell lines and in patients as negative numbers indicate a decrease and positive an increase in expression.

(b)

probe
set ID

accession number

gene name

median FC
N.MP

median
FC
C.MP

median
FC
MP

37881_at

AF100907

growth differentiation factor 11

2.6

3.7

2.1

38547_at

Y00796

integrin, alpha L (antigen CD11A (p180), lymphocyte function

4.9

-1.4

1.7

39286_at

D64109

transducer of ERBB2, 2

1.9

3.0

3.0

40329_at

AL031228

ring finger protein 1

1.3

3.2

1.7

41743_i_at

AF061034

tumor necrosis factor alpha-inducible cellular protein

1.7

1.5

2.3

34335_at

AI765533

ephrin-B2

1.6

1.5

1.7

34818_at

X96381

ets variant gene 5 (ets-related molecule)

2.5

1.5

2.0

40951_at

AL049250

 

1.7

1.7

1.9

292_s_at

L29219

CDC-like kinase 1

1.1

2.5

1.7

31777_at

AF006464

muscle, skeletal, receptor tyrosine kinase

1.2

-5.7

-2.6

33069_f_at

U06641

UDP glycosyltransferase 2 family, polypeptide B15

-2.5

1.1

-1.7

34068_f_at

X86174

synovial sarcoma, X breakpoint 1

-1.1

-2.5

-2.8

35081_at

D14838

fibroblast growth factor 9 (glia-activating factor)

-1.0

-4.9

-2.3

35109_at

AB018299

KIAA0756 protein

-5.3

-1.0

-2.6

37871_at

X68830

islet amyloid polypeptide

-3.0

-0.9

-2.0

40322_at

D12763

interleukin 1 receptor-like 1

-1.1

-4.6

-2.1

40387_at

U80811

endothelial differentiation, lysophosphatidic acid 

-4.3

1.4

-3.5

32083_at

AF027826

transmembrane 7 superfamily member 1 (upregulated in kidney)

-1.0

-10.6

-3.2

35178_at

W27944

Wnt inhibitory factor-1

-6.5

1.1

-5.3

39407_at

M22488

bone morphogenetic protein 1

-1.2

-3.7

-3.0

32834_r_at

AF013591

sudD (suppressor of bimD6, Aspergillus nidulans) homolog

-3.7

-1.1

-3.0

39448_r_at

W27095

B7 protein

-1.9

-1.3

-1.6

41244_f_at

X80910

protein phosphatase 1, catalytic subunit, beta isoform

-2.6

-1.7

-2.1

32531_at

X52947

gap junction protein, alpha 1, 43kD (connexin 43)

-1.2

-5.7

-3.2

32583_at

J04111

v-jun sarcoma virus 17 oncogene homolog (avian)

2.0

-16.0

-3.7

1152_i_at

J00117

chorionic gonadotropin, beta polypeptide

-2.8

-2.3

-6.1

618_at

M26167

platelet factor 4 variant 1

-2.1

-4.3

-4.0