概括
兰巴达5基因对B细胞发育至关重要. 它的无活化阻断了B细胞在B细胞前阶段的成熟,但允许一些细胞到达外围.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 兰巴达5基因与免疫球蛋白J兰巴达-C兰巴达基因是一致的.
- 在不成熟的B细胞中,Lambda 5蛋白与mu或D mu蛋白和Vpre-B蛋白形成复合体.
研究的目的:
- 研究Lambda5基因在B细胞发育中的作用.
- 为了确定在小鼠中Lambda 5基因失活的后果.
主要方法:
- 在胚胎干细胞中Lambda 5基因的向基因破坏.
- 基因改造小鼠的生成,以研究B细胞的发育.
主要成果:
- 兰巴达5基因的失活阻断了骨髓中B细胞前阶段的B细胞发育.
- 一个漏洞的阻塞允许B细胞的低速率来填补周边免疫系统.
- 这些外围B细胞被基排除并且对抗原有反应.
结论:
- 兰巴达5基因对于正常的B细胞发育至关重要.
- 兰巴达5在B细胞前阶段过渡中起着至关重要的作用.
- 尽管存在发育阻碍,但残留的B细胞表现出功能特征.
相关概念视频
Lineage Commitment
3.4K
Commitment is the process whereby stem cells:
3.4K
Lymphoid Cells and Tissues
3.4K
Lymphoid cells and tissues are integral to the immune system, which is crucial in maintaining our body's defense against harmful pathogens. They form the building blocks of lymphoid organs, which include the spleen, thymus, and lymph nodes.
Lymphoid cells consist of various types of immune system cells. These include B and T lymphocytes, which are responsible for producing antibodies and killing infected cells, respectively. Dendritic cells act as messengers between the innate and adaptive...
Lymphoid cells consist of various types of immune system cells. These include B and T lymphocytes, which are responsible for producing antibodies and killing infected cells, respectively. Dendritic cells act as messengers between the innate and adaptive...
3.4K
Primary Lymphoid Organs
9.6K
Primary lymphoid organs are pivotal in the formation, development, and maturation of lymphocytes, the white blood cells that serve as the backbone of our immune system. This crucial function underscores their fundamental role in maintaining our overall health and immunity. The two primary lymphoid organs of prime importance are the red bone marrow and the thymus.
The red bone marrow is a soft, spongy tissue nestled in the interior of long bones such as the humerus and femur. It is the site...
The red bone marrow is a soft, spongy tissue nestled in the interior of long bones such as the humerus and femur. It is the site...
9.6K
Cells of the Adaptive Immune Response
6.9K
The T and B lymphocytes of the adaptive immune system develop from common lymphoid progenitor cells in the bone marrow. These progenitors give rise to precursors that eventually develop into both T and B lymphocytes. As these precursors mature, they gain the ability to detect and respond to foreign antigens in the body, a process known as immunocompetence. Additionally, these precursors acquire self-tolerance, a process that ensures they do not react to self-antigens. This intricate system...
6.9K
B Cell Activation and Differentiation
14.5K
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...
14.5K
Bacterial Protein Maturation
748
Bacterial protein maturation is a tightly regulated process that ensures newly synthesized polypeptides achieve correct functional conformations. This maturation involves a series of modifications, folding events, and quality control steps, often assisted by specialized chaperone proteins.N-Terminal ModificationsThe maturation of bacterial polypeptides begins cotranslationally as the polypeptide exits the ribosome. The first amino acid, N-formylmethionine (fMet), is typically modified at the...
748


