BCR-ABL1淋巴细胞白血病的特点是删除Ikarosos
Charles G Mullighan1, Christopher B Miller, Ina Radtke
1Department of Pathology, St Jude Children's Research Hospital, Memphis, Tennessee 38105, USA.
Nature
|April 15, 2008
概括
由于IKZF1删除,Ikaros功能的丧失对于发展BCR-ABL1阳性急性淋巴细胞白血病 (ALL) 至关重要. 这与慢性骨髓性白血病 (CML) 相反,其中IKZF1缺失缺失.
科学领域:
- 遗传学 是一个遗传学.
- 在瘤学瘤学.
- 分子生物学分子生物学
背景情况:
- 编码BCR-ABL1的费城染色体定义了慢性骨髓性白血病 (CML) 和一些急性淋巴细胞白血病 (ALL) 病例.
- 了解合作的瘤性病变对于破译BCR-ABL1ALL病原体至关重要.
研究的目的:
- 为了确定与BCR-ABL1合作的遗传病变在B-原始 ALL 的发展.
- 研究IKZF1删除在BCR-ABL1ALL和CML进展中的作用.
主要方法:
- 从304名ALL患者和23名CML患者的诊断白血病样本进行全基因组分析.
- 分析包括BCR-ABL1阳性B原体ALL和CML病例.
- 删除断点的 IKZF1 的序列.
主要成果:
- 在83.7%的BCR-ABL1 ALL病例中发现了IKZF1删除,但在慢性阶段的CML中没有.
- 在CML转变为ALL (淋巴细胞爆发危机) 期间获得了IKZF1删除.
- 删除导致Ikaros哈普洛缺陷,主导负异型或功能完全丧失,可能由RAG重组介导.
结论:
- 通过IKZF1删除失去Ikaros功能是BCR-ABL1ALL发育的一个重要事件.
- 异常的RAG介导的重组可能会导致ALL中的IKZF1缺失.
- IKZF1状态区分了BCR-ABL1ALL与慢性阶段的CML.
更多相关视频
07:58qKAT: Quantitative Semi-automated Typing of Killer-cell Immunoglobulin-like Receptor Genes
Published on: March 6, 2019
10.3K
09:16Investigation of the Transcriptional Role of a RUNX1 Intronic Silencer by CRISPR/Cas9 Ribonucleoprotein in Acute Myeloid Leukemia Cells
Published on: September 1, 2019
6.6K
相关概念视频
Non-LTR Retrotransposons
12.5K
As the name suggests, non-LTR retrotransposons lack the long terminal repeats characteristic of the LTR retrotransposons. Additionally, both LTR and non-LTR retrotransposons use distinct mechanisms of mobilization. Non-LTR retrotransposons are further divided into two classes - Long interspersed nuclear elements (LINEs) and short interspersed nuclear elements (SINEs), both of which occur abundantly in most mammals, including humans. Some of the active non-LTR retrotransposons in humans are L1...
12.5K
Abnormal Proliferation
4.0K
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
4.0K
The Ras Gene
5.7K
The Ras-gene-encoded proteins are regulators of signaling pathways controlling cell proliferation, differentiation, or cell survival. The Ras-gene family in humans constitutes three primary members—the HRas, NRas, and KRas. These genes code for four functionally distinct yet closely related proteins—the HRas, NRas, KRas4A, and KRas4B. The involvement of mutant Ras genes in human cancer was first discovered in 1982 and is among the most common causes of human tumorigenesis.
Ras is a...
Ras is a...
5.7K
Rous Sarcoma Virus (RSV) and Cancer
5.2K
Rous Sarcoma virus or RSV was discovered by F. Peyton Rous in the year 1911 as a filterable transmissible agent that could cause tumors in chickens. He won a Nobel Prize for this discovery in 1966. His experiments clearly demonstrated that some cancers could be caused by infectious agents and led to the discovery of many more cancer-causing viruses in animals as well as humans.
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
RSV is a retrovirus that contains two copies of a plus-strand RNA genome. Its genome consists of four main open...
5.2K
The Retinoblastoma Gene
3.7K
Tumor suppressor genes are normal genes that can slow down cell division, repair DNA mistakes, or program the cells for apoptosis in case of irreparable damage. Hence, they play an essential role in preventing the proliferation of damaged cells.
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
3.7K
Diversity of Antigen Receptors
2.2K
Antigen receptors are essential components of the immune system crucial in defending the body against foreign invaders. These receptors are present on the surface of B and T cells, enabling them to recognize antigens and mount an appropriate immune response.
Before encountering any antigen, lymphocytes express these receptors. On B cells, the antigen receptor is a membrane-bound antibody molecule called BCR; on T cells, it is a T cell receptor or TCR. B and T cell receptors are composed of two...
Before encountering any antigen, lymphocytes express these receptors. On B cells, the antigen receptor is a membrane-bound antibody molecule called BCR; on T cells, it is a T cell receptor or TCR. B and T cell receptors are composed of two...
2.2K
