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The structure of the human ALL-1/MLL/HRX gene
R Marschalek1, I Nilson, K Löchner
1Department of Genetics, University of Erlangen-Nürnberg, Erlangen, Germany. rmarscha@biologie.uni-erlangen.de
Leukemia & Lymphoma
|February 26, 1998
Summary
The ALL-1/MLL/HRX gene alterations are linked to acute leukemias. Understanding these gene changes aids in diagnosis and treatment of leukemia.
Area of Science:
- Genetics
- Molecular Biology
- Oncology
Background:
- The human ALL-1/MLL/HRX gene (11q23) is implicated in various acute leukemias due to chromosomal alterations.
- Altered ALL-1 gene products are suspected to drive malignant transformation in hematopoietic cells.
Purpose of the Study:
- To map the ALL-1 gene structure, including exons and introns.
- To facilitate understanding of oncogenic ALL-1 protein variants and their formation.
- To aid in molecular diagnosis and therapeutic strategy selection for leukemias involving ALL-1.
Main Methods:
- Gene mapping and sequencing of exon/intron boundaries.
- Intron-phase analysis.
- Integration of existing data from other research groups.
Main Results:
- An updated exon/intron and restriction map of the approximately 92 kb ALL-1 gene (comprising at least 37 exons) was generated.
- Sequencing confirmed exon/intron boundaries and allowed for intron-phase analysis.
- The study provides a foundation for understanding structural alterations that preserve the open reading frame.
Conclusions:
- The detailed map and sequence data enhance understanding of structural gene alterations leading to oncogenic ALL-1 protein variants.
- This research supports rapid molecular diagnosis of ALL-1 gene alterations.
- Findings will assist in selecting appropriate therapeutic options for leukemia patients.