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Cloning of the chromosome breakpoint of neoplastic B cells with the t(14;18) chromosome translocation

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TLDR
In this paper, a DNA probe was obtained from an acute B-cell leukemia cell line, which was specific for chromosome 18 and flanked the heavy chain joining region of the immunoglobulin heavy chain locus on chromosome 14.
Abstract
From an acute B-cell leukemia cell line, a DNA probe was obtained that was specific for chromosome 18 and flanked the heavy chain joining region of the immunoglobulin heavy chain locus on chromosome 14. This probe detected rearrangement of the homologous DNA segment in the leukemic cells and in follicular lymphoma cells with the t(14:18) chromosome translocation but not in other neoplastic or normal B or T cells. The probe appears to identify bcl-2, a gene locus on chromosome 18 (band q21) that is unrelated to known oncogenes and may be important in the pathogenesis of B-cell neoplasms with this translocation.

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Citations
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Journal ArticleDOI

The Bcl-2 Protein Family: Arbiters of Cell Survival

TL;DR: Bcl-2 and related cytoplasmic proteins are key regulators of apoptosis, the cell suicide program critical for development, tissue homeostasis, and protection against pathogens.
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Bcl-2 is an inner mitochondrial membrane protein that blocks programmed cell death

TL;DR: It is demonstrated that Bcl-2 is an integral inner mitochondrial membrane protein of relative molecular mass 25,000 (25k) being localized to mitochondria and interfering with programmed cell death independent of promoting cell division.
Journal ArticleDOI

miR-15 and miR-16 induce apoptosis by targeting BCL2.

TL;DR: It is demonstrated thatmiR-15a and miR-16-1 expression is inversely correlated to Bcl2 expression in CLL and that both microRNAs negatively regulate BCL2 at a posttranscriptional level and are natural antisense B cl2 interactors that could be used for therapy of Bcl1-overexpressing tumors.
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Bcl-2 gene promotes haemopoietic cell survival and cooperates with c-myc to immortalize pre-B cells.

TL;DR: Results argue that bcl-2 provided a distinct survival signal to the cell and may contribute to neoplasia by allowing a clone to persist until other oncogenes, such as c-myc, become activated.
References
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Journal ArticleDOI

Human c-myc onc gene is located on the region of chromosome 8 that is translocated in Burkitt lymphoma cells

TL;DR: Using a DNA probe that is specific for the complete gene (c-myc), different somatic cell hybrids possessing varying numbers of human chromosomes were analyzed by the Southern blotting technique and results indicate that the human c- myc gene is located on chromosome 8.
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Translocation of the c-myc gene into the immunoglobulin heavy chain locus in human Burkitt lymphoma and murine plasmacytoma cells

TL;DR: It is shown that transformation of human Burkitt lymphomas and murine plasmacytomas is frequently accompanied by the somatic rearrangement of a cellular analogue of an avian retrovirus transforming gene, c-myc, which provides a molecular basis for considering the role that specific translocations might play in malignant transformation.
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Molecular Cloning of the Chromosomal Breakpoint of B-Cell Lymphomas and Leukemias with the t(11;14) Chromosome Translocation

TL;DR: The chromosomal breakpoint of chronic lymphocytic leukemia (CLL) cells of the B-cell type carrying the translocated long arms of chromosomes 11 and 14 [t(11;14) (q13;q32)] was cloned and a gene, named bcl -1, appears to be unrelated to any of the known retrovirus oncogenes described to date.
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Distinctive Chromosomal Abnormalities in Histologic Subtypes of Non-Hodgkin's Lymphoma

TL;DR: It is suggested that characteristic chromosomal defects occur in certain lymphoma subtypes and that high-resolution chromosomal analysis promises to become an important tool in improving the basic understanding of lymphoid cancers.
Journal ArticleDOI

Marker band in one chromosome 14 from Burkitt lymphomas.

TL;DR: KNOWLEDGE of the detailed pattern of fluorescence of the normal human karyotype has enabled us to recognize, both in biopsies and in cell cultures from several Burkitt lymphomas, an extra band in one homologue of D group chromosome pair No. 14.
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