相关实验视频
Updated: Jul 18, 2025

14:57
Yeast As a Chassis for Developing Functional Assays to Study Human P53
Published on: August 4, 2019
9.6K
TP53和p21 (CDKN1A) 多态性以及全身性红斑狼的风险
Jacyara Maria Brito Macedo1, Amanda Lima Silva1, Amanda Chaves Pinto1
1Department of Biochemistry, State University of Rio de Janeiro - UERJ, Rio de Janeiro, Brazil.
Advances in rheumatology (London, England)
|August 22, 2023
概括
在TP53和p21 (CDKN1A) 的遗传变异可能会影响系统性红斑狼 (SLE) 的风险. 特定的基因型显示出保护性或风险关联,并且在SLE患者中观察到与血清炎和神经障碍等临床特征的相互作用.
科学领域:
- 遗传学 遗传学 是一个
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- p53和p21蛋白调节细胞循环和细胞亡,可能影响像SLE这样的自身免疫性疾病.
- 在TP53和p21 (CDKN1A) 中的遗传多态性可以改变蛋白质的功能和水平.
- 研究这些多态可能会揭示SLE病变的洞察力.
研究的目的:
- 检查特异TP53和p21多态体之间的关联以及对SLE的易感性.
- 探索这些遗传变异与SLE患者临床表现之间的关系.
- 在巴西东南部人口中确定SLE风险的潜在遗传标志物.
主要方法:
- 用PCR,RFLP和/或DNA测序对353名女性参与者 (145例SLE病例,208例对照) 进行基因定型.
- 逻辑回归分析以评估TP53和p21多态和SLE之间的关联.
- 评估基因型组合及其与SLE易感性和临床特征的相关性.
主要成果:
- 某些基因型组合 (例如,p53 PIN3 A1/A1-p21 31 C/A) 表明对SLE有保护作用.
- 在白人个体中,特定的p53基因型 (72含C,PIN3含A2) 与增加SLE风险有关.
- 与特定的临床表现相关的TP53多态,包括血清炎和神经疾病.
结论:
- TP53和p21多态可能作为SLE敏感性标记在不同的患者亚组.
- 确定了TP53多态和临床特征 (如血清炎和神经疾病) 之间的显著相互作用.
- 这些发现有助于了解SLE的遗传基础及其各种临床表现.
相关概念视频
Abnormal Proliferation
4.6K
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...
4.6K
Cancer-Critical Genes II: Tumor Suppressor Genes
7.5K
Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
7.5K
Non-LTR Retrotransposons
11.6K
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...
11.6K
Negative Regulator Molecules
35.4K
Positive regulators allow a cell to advance through cell cycle checkpoints. Negative regulators have an equally important role as they terminate a cell’s progression through the cell cycle—or pause it—until the cell meets specific criteria.
35.4K
DNA Damage can Stall the Cell Cycle
9.2K
In response to DNA damage, cells can pause the cell cycle to assess and repair the breaks. However, the cell must check the DNA at certain critical stages during the cell cycle. If the cell cycle pauses before DNA replication, the cells will contain twice the amount of DNA. On the other hand, if cells arrest after DNA replication but before mitosis, they will contain four times the normal amount of DNA. With a host of specialized proteins at their disposal,cells must use the right protein at...
9.2K
Inhibition of Cdk Activity
4.8K
The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
4.8K

