Unbiased mapping of transcription factor binding sites along human chromosomes 21 and 22 points to widespread regulation of noncoding RNAs.
Using high-density oligonucleotide arrays representing essentially all nonrepetitive sequences on human chromosomes 21 and 22, we map the binding sites in vivo for three DNA binding transcription factors, Sp1, cMyc, and p53, in an unbiased manner. This mapping reveals an unexpectedly large number of transcription factor binding site (TFBS) regions, with a minimal estimate of 12,000 for Sp1, 25,000 for cMyc, and 1600 for p53 when extrapolated to the full genome. Only 22% of these TFBS regions are located at the 5' termini of protein-coding genes while 36% lie within or immediately 3' to well-characterized genes and are significantly correlated with noncoding RNAs. A significant number of these noncoding RNAs are regulated in response to retinoic acid, and overlapping pairs of protein-coding and noncoding RNAs are often coregulated. Thus, the human genome contains roughly comparable numbers of protein-coding and noncoding genes that are bound by common transcription factors and regulated by common environmental signals.
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Simon
S
Cawley
Stefan
S
Bekiranov
Huck H
HH
Ng
Philipp
P
Kapranov
Edward A
EA
Sekinger
Dione
D
Kampa
Antonio
A
Piccolboni
Victor
V
Sementchenko
Jill
J
Cheng
Alan J
AJ
Williams
Raymond
R
Wheeler
Brant
B
Wong
Jorg
J
Drenkow
Mark
M
Yamanaka
Sandeep
S
Patel
Shane
S
Brubaker
Hari
H
Tammana
Gregg
G
Helt
Kevin
K
Struhl
Thomas R
TR
Gingeras
D020816:Amino Acid Motifs; D001665:Binding Sites; D002460:Cell Line; D002843:Chromatin / Q000378:metabolism; D002874:Chromosome Mapping; D002891:Chromosomes, Human, Pair 21; D002892:Chromosomes, Human, Pair 22; D018899:CpG Islands; D005091:Exons; D020224:Expressed Sequence Tags; D015894:Genome, Human; D006801:Humans; D019169:Jurkat Cells; D008957:Models, Genetic; D016133:Polymerase Chain Reaction; D011233:Precipitin Tests; D011401:Promoter Regions, Genetic; D011485:Protein Binding; D012313:RNA / Q000737:chemistry / Q000378:metabolism; D012333:RNA, Messenger / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction; D014157:Transcription Factors / Q000378:metabolism*; D014212:Tretinoin / Q000378:metabolism
D002843:Chromatin; D012333:RNA, Messenger; D014157:Transcription Factors; D014212:Tretinoin; D012313:RNA