Blood expression profiles for tuberous sclerosis complex 2, neurofibromatosis type 1, and Down's syndrome.
Blood gene expression profiling has been applied to a variety of hematological malignancies, autoimmune disorders, and infectious diseases. This study applies this approach to genetic diseases without obvious blood phenotypes. Three genetic diseases including tuberous sclerosis complex 2, neurofibromatosis type 1, and Down's syndrome were compared with a group of healthy controls. RNA from whole blood was surveyed using Affymetrix U133A arrays. Each disease was associated with a unique gene expression pattern in blood that can be accurately distinguished by a classifier. Genes on chromosome 21 were overexpressed in Down's syndrome, and genes controlling cell cycle and proliferation were associated with tuberous sclerosis complex type 2 or neurofibromatosis type 1. A subset of genes involved in cardiac development or remodeling were overexpressed in patients with Down's syndrome and congenital heart defects. These findings suggest that blood gene expression profiling on a broader basis might be useful for genetic disease screening/diagnosis and might help elucidate mechanisms and pathways that lead to genotype-phenotype differences.
Tang
Yang
Y
Department of Neurology and MIND Institute, University of California at Davis, Sacramento, CA, USA. yang.tang@ucdmc.udavis.edu
Schapiro
Mark B
MB
Franz
David N
DN
Patterson
Bonnie J
BJ
Hickey
Francis J
FJ
Schorry
Elizabeth K
EK
Hopkin
Robert J
RJ
Wylie
Matthew
M
Narayan
Tina
T
Glauser
Tracy A
TA
Gilbert
Donald L
DL
Hershey
Andrew D
AD
Sharp
Frank R
FR
D016000:Cluster Analysis; D004314:Down Syndrome / Q000097:blood* / Q000235:genetics; D020869:Gene Expression Profiling / Q000379:methods*; D005786:Gene Expression Regulation / Q000502:physiology; D006801:Humans; D009456:Neurofibromatosis 1 / Q000097:blood* / Q000235:genetics; D012097:Repressor Proteins / Q000096:biosynthesis / Q000097:blood* / Q000235:genetics; D000077005:Tuberous Sclerosis Complex 2 Protein; D025521:Tumor Suppressor Proteins
D012097:Repressor Proteins; D000077005:Tuberous Sclerosis Complex 2 Protein; D025521:Tumor Suppressor Proteins