区域人口中的候选基因表达及其与辐射分离的相关性
Nandhini Kannan1, Teena Koshy1, Venkateswarlu Raavi2
1Department of Human Genetics, Sri Ramachandra Institute of Higher Education and Research (Deemed to Be University), Chennai, India.
Cytogenetic and genome research
|May 30, 2023
概括
用于辐射选的基因表达测试有希望,但需要谨慎. 基因表达基因基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表达基因表现基因表现基因表现基因表现基因表现基因表现基因表现基因表现基因表格
科学领域:
- 生物医学科学 生物医学科学
- 分子生物学分子生物学
- 辐射生物学 辐射生物学
背景情况:
- 基因表达特征被探索为辐射分类和生物对称的快速标记.
- 现有的基因表达分析面临的挑战包括动态性,缺乏对电离辐射的特异性,以及炎症,性别和生活方式等混因素的影响.
- 在人群中建立基线基因表达可以帮助区分暴露与未暴露的个体,而无需进行暴露前控制.
研究的目的:
- 在南印度人口中建立对辐射敏感基因 (CDKN1A,DDB2,FDXR,PCNA) 的基线表达.
- 为了比较健康个体和慢性炎症疾病 (糖尿病/高血压) 患者之间的基因表达基因表达.
- 评估这些基因表达特征在辐射选场景中的有用性,包括医疗后成像暴露.
主要方法:
- 在血液样本中量化基因表达特征.
- 基因表达水平的比较在健康,糖尿病/高血压和医疗后成像参与者.
- 在血液样本中使用脂聚糖 (LPS) 诱导急性炎症,以观察基因表达变化.
主要成果:
- 由LPS引起的急性炎症显著增加了CDKN1A,DDB2,FDXR和PCNA的折叠表达 (p < 0.0001).
- 这些基因的基底表达在患有炎症状况的参与者和接受X射线成像的参与者中略高,但与对照组相比,折叠增加没有显著差异.
- 低剂量辐射暴露 (医学成像) 后基因表达的折叠变化在两倍之内,表明有限的显著变化.
结论:
- CDKN1A,DDB2,FDXR和PCNA基因的基底表达在患有炎症状况的个体和医学成像后略有升高.
- 这些特定的基因表达标记物用于辐射分类的实用性,特别是在非常低剂量的辐射暴露后,由于潜在的混因素,需要仔细解释.
- 需要进一步的研究来完善基因表达分析,以便在紧急情况下可靠的辐射生物测量和分类.
相关概念视频
01:25What is Population Genetics?
A population is composed of members of the same species that simultaneously live and interact in the same area. When individuals in a population breed, they pass down their genes to their offspring. Many of these genes are polymorphic, meaning that they occur in multiple variants. Such variations of a gene are referred to as alleles. The collective set of all the alleles within a population is known as the gene pool.While some alleles of a given gene might be observed commonly, other variants...
01:49Hardy-Weinberg Principle
Diploid organisms have two alleles of each gene, one from each parent, in their somatic cells. Therefore, each individual contributes two alleles to the gene pool of the population. The gene pool of a population is the sum of every allele of all genes within that population and has some degree of variation. Genetic variation is typically expressed as a relative frequency, which is the percentage of the total population that has a given allele, genotype or phenotype.In the early 20th century,...
01:11Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase
Genetic polymorphisms in drug targets have emerged as critical determinants of interindividual variability in drug response and toxicity. Pharmacogenomic investigations increasingly focus on identifying these variations to personalize and optimize therapeutic interventions. A drug target may be a receptor, enzyme, or signaling protein involved in pharmacologic responses or disease-related pathways. While early pharmacogenetic studies focused primarily on drug metabolism, current research...