Localization of the chromosome 15 breakpoints and expression of multiple PML-RAR alpha transcripts in acute promyelocytic leukemia: a study of 28 Chinese patients.
Translocation (15;17)(q22;q12-q21) is a chromosome aberration specifically found in acute promyelocytic leukemia (APL), that generates a chimeric gene between the promyelocytic leukemia (PML) gene on chromosome 15 and the retinoic acid receptor alpha (RARA) gene, on chromosome 17. In the course of molecular investigations of a series of 28 Chinese patients with APL, we have simultaneously used Southern blot and reverse transcriptase polymerase chain reaction (RT-PCR) analysis to characterize the PML gene breakpoints on chromosome 15 and identify PML-RARA fusion transcripts. Our results confirmed the existence of the three recently described bcr1, bcr2, and bcr3 breakpoint cluster regions. In addition, structural data provided by PML-RARA transcripts allowed us to more accurately locate the 3' borders of clusters bcr1 and bcr3. Moreover, our data suggest a preferential localization of the breakpoints within bcr1 and bcr3. The primary structure of a 1.4 kb DNA segment flanking the 5' part of the PML gene and that of the bcr3 cluster (2.1 kb) were also established.
Laboratory of Molecular Biology, Rui-Jin Hospital, Shanghai Second Medical University, China.
J P
JP
Geng
J H
JH
Tong
S
S
Dong
Z Y
ZY
Wang
S J
SJ
Chen
Z
Z
Chen
A
A
Zelent
R
R
Berger
C J
CJ
Larsen
D001483:Base Sequence; D002352:Carrier Proteins / Q000235:genetics*; D002681:China / Q000208:ethnology; D002884:Chromosomes, Human, Pair 15; D002886:Chromosomes, Human, Pair 17; D004273:DNA, Neoplasm / Q000235:genetics; D015870:Gene Expression; D005796:Genes; D006801:Humans; D015473:Leukemia, Promyelocytic, Acute / Q000235:genetics*; D008969:Molecular Sequence Data; D009363:Neoplasm Proteins; D009687:Nuclear Proteins; D000071156:Promyelocytic Leukemia Protein; D011505:Protein-Tyrosine Kinases; D011518:Proto-Oncogene Proteins / Q000235:genetics; D051562:Proto-Oncogene Proteins c-bcr; D012333:RNA, Messenger / Q000235:genetics; D012334:RNA, Neoplasm / Q000235:genetics; D018168:Receptors, Retinoic Acid; D012045:Regulatory Sequences, Nucleic Acid; D015183:Restriction Mapping; D014157:Transcription Factors / Q000235:genetics*; D014178:Translocation, Genetic; D025521:Tumor Suppressor Proteins
D002352:Carrier Proteins; D004273:DNA, Neoplasm; D009363:Neoplasm Proteins; D009687:Nuclear Proteins; D000071156:Promyelocytic Leukemia Protein; D011518:Proto-Oncogene Proteins; D012333:RNA, Messenger; D012334:RNA, Neoplasm; D018168:Receptors, Retinoic Acid; D014157:Transcription Factors; D025521:Tumor Suppressor Proteins; C070576:PML protein, human; D011505:Protein-Tyrosine Kinases; C496613:BCR protein, human; D051562:Proto-Oncogene Proteins c-bcr