Abstract
We have adapted to RNA molecules the ligation-mediated polymerase chain reaction (LMPCR) procedure of genomic sequencing [Mueller, P. R. & Wold, B. (1989) Science 246, 780-786]. This new procedure, the reverse ligation-mediated PCR (RLPCR), is sufficiently sensitive to allow "in vivo" footprinting of minor RNA species. It is based on the ligation of an RNA linker of known sequence to every 5' end resulting from the cleavage of total cellular RNA. Target RNA molecules are specifically reverse-transcribed and the resulting products are amplified by PCR. The localization of the initial 5' ends is ultimately determined on a sequencing gel. To demonstrate the validity of this strategy, we have used RNase T1 treatment of permeabilized cells and RLPCR and have detected in vivo iron-depletion-dependent footprints on two iron-responsive elements of the transferrin receptor mRNA.
MeSH Terms
Base Sequence
Carcinoma, Hepatocellular
DNA, Neoplasm/genetics,isolation & purification
Deferoxamine/pharmacology
Gene Expression Regulation, Neoplastic
Hemin/pharmacology
Humans
Liver Neoplasms
Molecular Sequence Data
Nucleic Acid Conformation
Oligodeoxyribonucleotides/chemical synthesis
Polymerase Chain Reaction/methods
RNA, Messenger/genetics,isolation & purification,metabolism
RNA, Neoplasm/genetics,isolation & purification,metabolism
RNA-Binding Proteins/metabolism
RNA-Directed DNA Polymerase/metabolism
Receptors, Transferrin/genetics
Ribonuclease T1/metabolism
Tumor Cells, Cultured
Chemicals
DNA, Neoplasm
Oligodeoxyribonucleotides
RNA, Messenger
RNA, Neoplasm
RNA-Binding Proteins
Receptors, Transferrin
Hemin
RNA-Directed DNA Polymerase
Ribonuclease T1
Deferoxamine
Authors & Affiliations
4 authors, click to expand affiliations / ORCID
Bertrand E
Institut Jacques Monod, Centre National de la Recherche Scientifique, Université Paris, France.
Fromont-Racine M
Pictet R
Grange T
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