Table 1.

Genes expressed by endothelial cells and their transcriptional regulation by prolonged unidirectional pulsatile flow

Protein nameGene nameGenBank*Ratio ± SEMCatProtein function
β-Actin ACTB NM_001101 1.1 ± 0.07 Cytoskeletal protein  
Activin βA INHBA NM_002192 3.1 ± 1.29 Vascular growth factor  
ALL1-fused gene from chromosome 1q AF1Q NM_006818 1.4 ± 0.43 Unknown  
Amyloid β A4 precursor protein APP NM_000484 2.3 ± 0.49 Alzheimer disease/hemostasis  
Annexin II ANXA2 NM_004039 1.2 ± 0.06 Membrane-binding protein  
Annexin V ANXA5 NM_001154 2.2 ± 0.14 Anticoagulant protein 
ApoL1 APOL1 NM_003661 2.0 ± 0.19 HDL-associated plasma protein 
ApoL2 APOL2 NM_030882 1.7 ± 0.42 Homolog of ApoL1  
ApoL3 (CG12_1) APOL3 NM_014349 3.9 ± 1.40 Homolog of ApoL1  
AT7_4_3  No match 0.4 ± 0.10 Unknown 
Biglycan BGN NM_001711 1.3 ± 0.41 Extracellular matrix constituent  
Caveolin 1 CAV1 NM_01753 0.6 ± 0.13 Main component of caveolae  
Claudin 5 CLDN5 NM_003277 2.1 ± 0.43 Tight junction protein 
Cockayne syndrome, type I CKN1 NM_000082 5.7 ± 2.35 RNA polymerase II transcription  
Connexin 40 GJA5 NM_005266 3.2 ± 0.93 Gap junction protein 
Cyclin-dependent kinase inhibitor 1A (p21) CDKN1A NM_000389 1.7 ± 0.62 Cell-cycle regulation  
Cytochrome P450 1B1 CYP1B1 NM_000104 26.9 ± 0.08 Hormone metabolism 
Dermatan sulphate proteoglycan 3 DSPG3 NM_004950 0.7 ± 0.05 Extracellular matrix constituent 
Diaphorase DIA4/NQO1 NM_000903 10.9 ± 5.93 Detoxification/nitric oxide synthesis  
DKFZp564F053 cDNA clone  AA166719 3.7 ± 1.24 Unknown  
Early growth response 1 EGR1 NM_001964 1.2 ± 0.17 B/D Transcription factor 
Endothelial protein C receptor PROCR NM_006404 1.1 ± 0.24 Anticoagulation 
eNOS NOS3 NM_000603 4.0 ± 0.73 B/D Nitric oxide synthesis  
EST 15  R96525 1.7 ± 0.25 Unknown 
EST 23  AI632668 1.2 ± 0.30 Unknown  
EST 35  AA455259 1.8 ± 0.21 Unknown  
EST 41  AI140281 1.7 ± 0.42 Unknown  
Ferritin, heavy polypeptide FTH1 NM_002032 2.5 ± 0.48 Intracellular iron storage  
Ferritin, light polypeptide FTL NM_000146 2.0 ± 0.12 Intracellular iron storage  
Fibronectin 1 FN1 X02761 3.9 ± 0.59 Extracellular matrix protein  
G1 to S phase transition 1 GSPT1 NM_002094 0.5 ± 0.08 Cell-cycle regulation 
Galectin 8 LGALS8 NM_006499 4.3 ± 0.73 Carbohydrate binding protein 
GAPDH GAPD NM_002046 1.0 ± 0.00 Carbohydrate metabolism  
Hypothetical protein  NM_014108 2.3 ± 1.00 Unknown 
Hypothetical protein FLJ23514 NM_021827 0.6 ± 0.09 Unknown 
Hypothetical protein FLJ20003 N47844 1.8 ± 0.30 Unknown 
Hypothetical protein  T80319 2.9 ± 0.58 Unknown 
Hypothetical protein  BC004930 0.4 ± 0.23 Unknown 
Interleukin 8 IL8 M28130 1.0 ± 0.16 D/E Inflammatory cytokine 
LOX-1 OLR1 NM_079167 1.0 ± 0.45 Oxidized LDL internalization  
Lung Krüppel-like factor KLF2 NM_016270 4.9 ± 1.74 Transcription factor  
Matrix Gla protein MGP NM_000900 3.7 ± 1.21 Inhibits extracellular matrix calcification 
MnSOD SOD2 NM_000636 1.1 ± 0.61 B/D Free radical scavenging 
Multimerin MMRN NM_007351 2.0 ± 0.54 Hemostasis 
PAI-1 SERPINE1 NM_000602 1.4 ± 0.71 Fibrinolysis/proliferation/migration 
PECAM-1 PECAM1 NM_000442 2.1 ± 0.37 (Leukocyte) adhesion receptor  
Prefoldin 2 PFDN2 NM_012394 2.2 ± 0.44 Membrane-binding protein/autoantigen  
Protease nexin 1 GDN M17783 6.4 ± 3.18 Serine protease inhibitor 
Rabkinesin 6 RAB6KIFL NM_005733 3.0 ± 0.55 Intracellular transport/cell division  
Ras-related C3 botulinum toxin substrate 3 RAC3 NM_005052 1.6 ± 0.07 Ras-related GTPase 
Regulator of G protein signaling RGS5 R38334 1.4 ± 0.77 GTPase activator 
28S ribosomal RNA  M11167 0.9 ± 0.19 Translation  
Ribosomal protein L30 RPL30 NM_000989 1.1 ± 0.16 Translation 
Ribosomal protein S11 RPS11 NM_001015 0.7 ± 0.13 Translation 
Solute carrier family 7, member 11 SLC7A11 NM_014331 2.1 ± 0.06 Amino acid transporter  
Spermidine/spermine N1-acetyltransferase SAT NM_002970 1.0 ± 0.12 Polyamine metabolism  
Stromal cell-derived factor 2 SDF2 AA343837 2.4 ± 0.20 Secretory protein 
Thioredoxin reductase 1 TXNRD1 NM_003330 2.0 ± 0.08 Intracellular redox control  
Thrombin receptor 1 F2R NM_001992 2.0 ± 0.18 Mitogenic signaling 
Thrombomodulin THBD NM_000361 2.3 ± 0.11 B/D Anticoagulation 
Thyroid hormone receptor interactor 7 TRIP7 L40357 2.5 ± 0.67 Thyroid hormone signal transduction  
Tissue factor F3 NM_001993 0.4 ± 0.03 B/D Extrinsic coagulation  
Tissue factor pathway inhibitor 1 TFPI NM_006287 1.8 ± 0.77 Extrinsic coagulation 
Translation elongation factor 1 α 2 EEF1A2 NM_001958 1.1 ± 0.05 Translation 
α-Tubulin TUBA3 NM_006009 1.2 ± 0.04 Intracellular transport 
VCAM VCAM1 NM_001078 0.6 ± 0.02 B/D Leukocyte adhesion receptor 
Vinculin VCL NM_003373 1.6 ± 0.63 Cytoskeletal/adherens junction protein  
Von Willebrand Factor VWF NM_000552 2.4 ± 0.18 Platelet adhesion (hemostasis) 
Protein nameGene nameGenBank*Ratio ± SEMCatProtein function
β-Actin ACTB NM_001101 1.1 ± 0.07 Cytoskeletal protein  
Activin βA INHBA NM_002192 3.1 ± 1.29 Vascular growth factor  
ALL1-fused gene from chromosome 1q AF1Q NM_006818 1.4 ± 0.43 Unknown  
Amyloid β A4 precursor protein APP NM_000484 2.3 ± 0.49 Alzheimer disease/hemostasis  
Annexin II ANXA2 NM_004039 1.2 ± 0.06 Membrane-binding protein  
Annexin V ANXA5 NM_001154 2.2 ± 0.14 Anticoagulant protein 
ApoL1 APOL1 NM_003661 2.0 ± 0.19 HDL-associated plasma protein 
ApoL2 APOL2 NM_030882 1.7 ± 0.42 Homolog of ApoL1  
ApoL3 (CG12_1) APOL3 NM_014349 3.9 ± 1.40 Homolog of ApoL1  
AT7_4_3  No match 0.4 ± 0.10 Unknown 
Biglycan BGN NM_001711 1.3 ± 0.41 Extracellular matrix constituent  
Caveolin 1 CAV1 NM_01753 0.6 ± 0.13 Main component of caveolae  
Claudin 5 CLDN5 NM_003277 2.1 ± 0.43 Tight junction protein 
Cockayne syndrome, type I CKN1 NM_000082 5.7 ± 2.35 RNA polymerase II transcription  
Connexin 40 GJA5 NM_005266 3.2 ± 0.93 Gap junction protein 
Cyclin-dependent kinase inhibitor 1A (p21) CDKN1A NM_000389 1.7 ± 0.62 Cell-cycle regulation  
Cytochrome P450 1B1 CYP1B1 NM_000104 26.9 ± 0.08 Hormone metabolism 
Dermatan sulphate proteoglycan 3 DSPG3 NM_004950 0.7 ± 0.05 Extracellular matrix constituent 
Diaphorase DIA4/NQO1 NM_000903 10.9 ± 5.93 Detoxification/nitric oxide synthesis  
DKFZp564F053 cDNA clone  AA166719 3.7 ± 1.24 Unknown  
Early growth response 1 EGR1 NM_001964 1.2 ± 0.17 B/D Transcription factor 
Endothelial protein C receptor PROCR NM_006404 1.1 ± 0.24 Anticoagulation 
eNOS NOS3 NM_000603 4.0 ± 0.73 B/D Nitric oxide synthesis  
EST 15  R96525 1.7 ± 0.25 Unknown 
EST 23  AI632668 1.2 ± 0.30 Unknown  
EST 35  AA455259 1.8 ± 0.21 Unknown  
EST 41  AI140281 1.7 ± 0.42 Unknown  
Ferritin, heavy polypeptide FTH1 NM_002032 2.5 ± 0.48 Intracellular iron storage  
Ferritin, light polypeptide FTL NM_000146 2.0 ± 0.12 Intracellular iron storage  
Fibronectin 1 FN1 X02761 3.9 ± 0.59 Extracellular matrix protein  
G1 to S phase transition 1 GSPT1 NM_002094 0.5 ± 0.08 Cell-cycle regulation 
Galectin 8 LGALS8 NM_006499 4.3 ± 0.73 Carbohydrate binding protein 
GAPDH GAPD NM_002046 1.0 ± 0.00 Carbohydrate metabolism  
Hypothetical protein  NM_014108 2.3 ± 1.00 Unknown 
Hypothetical protein FLJ23514 NM_021827 0.6 ± 0.09 Unknown 
Hypothetical protein FLJ20003 N47844 1.8 ± 0.30 Unknown 
Hypothetical protein  T80319 2.9 ± 0.58 Unknown 
Hypothetical protein  BC004930 0.4 ± 0.23 Unknown 
Interleukin 8 IL8 M28130 1.0 ± 0.16 D/E Inflammatory cytokine 
LOX-1 OLR1 NM_079167 1.0 ± 0.45 Oxidized LDL internalization  
Lung Krüppel-like factor KLF2 NM_016270 4.9 ± 1.74 Transcription factor  
Matrix Gla protein MGP NM_000900 3.7 ± 1.21 Inhibits extracellular matrix calcification 
MnSOD SOD2 NM_000636 1.1 ± 0.61 B/D Free radical scavenging 
Multimerin MMRN NM_007351 2.0 ± 0.54 Hemostasis 
PAI-1 SERPINE1 NM_000602 1.4 ± 0.71 Fibrinolysis/proliferation/migration 
PECAM-1 PECAM1 NM_000442 2.1 ± 0.37 (Leukocyte) adhesion receptor  
Prefoldin 2 PFDN2 NM_012394 2.2 ± 0.44 Membrane-binding protein/autoantigen  
Protease nexin 1 GDN M17783 6.4 ± 3.18 Serine protease inhibitor 
Rabkinesin 6 RAB6KIFL NM_005733 3.0 ± 0.55 Intracellular transport/cell division  
Ras-related C3 botulinum toxin substrate 3 RAC3 NM_005052 1.6 ± 0.07 Ras-related GTPase 
Regulator of G protein signaling RGS5 R38334 1.4 ± 0.77 GTPase activator 
28S ribosomal RNA  M11167 0.9 ± 0.19 Translation  
Ribosomal protein L30 RPL30 NM_000989 1.1 ± 0.16 Translation 
Ribosomal protein S11 RPS11 NM_001015 0.7 ± 0.13 Translation 
Solute carrier family 7, member 11 SLC7A11 NM_014331 2.1 ± 0.06 Amino acid transporter  
Spermidine/spermine N1-acetyltransferase SAT NM_002970 1.0 ± 0.12 Polyamine metabolism  
Stromal cell-derived factor 2 SDF2 AA343837 2.4 ± 0.20 Secretory protein 
Thioredoxin reductase 1 TXNRD1 NM_003330 2.0 ± 0.08 Intracellular redox control  
Thrombin receptor 1 F2R NM_001992 2.0 ± 0.18 Mitogenic signaling 
Thrombomodulin THBD NM_000361 2.3 ± 0.11 B/D Anticoagulation 
Thyroid hormone receptor interactor 7 TRIP7 L40357 2.5 ± 0.67 Thyroid hormone signal transduction  
Tissue factor F3 NM_001993 0.4 ± 0.03 B/D Extrinsic coagulation  
Tissue factor pathway inhibitor 1 TFPI NM_006287 1.8 ± 0.77 Extrinsic coagulation 
Translation elongation factor 1 α 2 EEF1A2 NM_001958 1.1 ± 0.05 Translation 
α-Tubulin TUBA3 NM_006009 1.2 ± 0.04 Intracellular transport 
VCAM VCAM1 NM_001078 0.6 ± 0.02 B/D Leukocyte adhesion receptor 
Vinculin VCL NM_003373 1.6 ± 0.63 Cytoskeletal/adherens junction protein  
Von Willebrand Factor VWF NM_000552 2.4 ± 0.18 Platelet adhesion (hemostasis) 
*

GenBank accession numbers for access to mRNA sequence or spotted cDNA fragment.

Ratios of the expression level in flow-exposed cultures over static cultures, as determined by microarray hybridization, are expressed as the mean of 3 independent 7-day shear-stress experiments ± SEM.

Genes on the custom microarray are organized in the following categories (Cat): (A) 12 shear-stress–responsive genes identified in this study, (B) 10 established shear-stress–responsive genes,7,17 (C) 106 TNF-α–responsive genes,6 (D) prominent endothelial (-specific) genes, (E) 40 smooth muscle activation–specific genes,24 and (F) control genes for normalization purposes. The sets of TNF-α–responsive endothelial genes and activated SMC genes were identified in previous studies from our group using differential display RT-PCR (DD/RT-PCR).6,24 The recently available University of California Santa Cruz (UCSC) draft version of the human genome was used to annotate those differential display (DD) fragments that had not yet been mapped to a named gene.44 

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