相关实验视频
Updated: May 12, 2026

08:35
Examining BCL-2 Family Function with Large Unilamellar Vesicles
Published on: October 5, 2012
FBXO11针对BCL6进行降解,并且在扩散的大B细胞淋巴瘤中被禁用
Shanshan Duan1, Lukas Cermak, Julia K Pagan
1Department of Pathology, NYU Cancer Institute, New York University School of Medicine, New York, New York 10016, USA.
Nature
|November 25, 2011
概括
FBXO11的失活导致BCL6的稳定,促进扩散型大B细胞淋巴瘤 (DLBCL) 的发展. 恢复FBXO11抑制DLBCL细胞增殖和瘤性,确定FBXO11是一种瘤抑制剂.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 一种原型瘤基因产物BCL6对B细胞发育至关重要,并与B细胞淋巴瘤有关.
- 过度表达BCL6在侵袭性扩散性大B细胞淋巴瘤 (DLBCL) 中很常见,通常是由于转位或促进子突变.
- 在许多DLBCL中驱动BCL6过度表达的机制仍然未知.
研究的目的:
- 阐明调节DLBCL中BCL6稳定的分子机制.
- 研究F-盒蛋白FBXO11在BCL6降解中的作用.
- 为了确定FBXO11的变化是否有助于淋巴发育.
主要方法:
- 研究了BCL6和含有FBXO11.11的SCF泛基因酶复合体之间的相互作用.
- 在DLBCL细胞系和原发性瘤中分析了FBXO11基因状态 (删除/突变).
- 在体内评估FBXO11复制剂对BCL6水平,细胞增殖和瘤生长的影响.
主要成果:
- FBXO11针对BCL6进行无处不在和蛋白质体降解.
- 在DLBCL细胞系和原发性瘤中发现了FBXO11基因缺失或突变,与增加的BCL6水平相关.
- 来自瘤的FBXO11突变体显示BCL6降解受损;FBXO11复制减少了扩散和瘤性.
结论:
- FBXO11通过降解BCL6.6而起瘤抑制作用.
- 通过稳定BCL6.6,FBXO11的非激活有助于DLBCL的致病性.
- FBXO11 是DLBCL.中一个平分不充分的瘤抑制基因.
相关概念视频
Abnormal Proliferation
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 daughter...
Loss of Tumor Suppressor Gene Functions
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.
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
Targeted Cancer Therapies
The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against specific...
There are several types of targeted therapies against specific...
The Intrinsic Apoptotic Pathway
Internal cellular stress, such as cellular injury or hypoxia, triggers intrinsic apoptosis. The B-cell lymphoma 2 (Bcl-2) family of proteins are the primary regulators of the intrinsic apoptotic pathway. For example, during DNA damage, checkpoint proteins, such as Ataxia Telangiectasia Mutated (ATM protein) and Checkpoints Factor-2 (Chk2) proteins, are activated. These proteins phosphorylate p53 which further activates pro-apoptotic proteins, such as Bax, Bak, PUMA, and Noxa, and inhibits...
Loss of Tumor Suppressor Gene Functions
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.
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
B Cell Activation and Differentiation
The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...

