组织特异性的非遗传性影响驱动子宫内膜免疫系统变异
Jonna Bister1, Iva Filipovic1, Dan Sun1
1Center for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden.
Science immunology
|April 5, 2024
概括
子宫中的免疫细胞变异更多地受到环境因素的影响,而不是遗传因素,与血液不同. 荷尔蒙避孕药显著影响子宫免疫细胞,但不影响全身免疫力.
科学领域:
- 免疫学 免疫学 免疫学
- 遗传学 是一个遗传学.
- 生殖生物学 生殖生物学
背景情况:
- 人类双胞胎研究表明,遗传性和环境因素都影响了血液中的免疫系统变异性.
- 然而,这些因素对特定组织 (如人类子宫) 内的免疫系统变异的影响仍然在很大程度上未被探索.
- 子宫是一个独特的组织,其特点是不断再生和暴露于不同的局部环境因素.
研究的目的:
- 为了研究人类免疫系统的特定组织变异.
- 为了比较遗传和环境因素对子宫内膜和外周血液中免疫细胞组成的影响.
- 确定特定的因素,如细胞巨乳病毒感染和荷尔蒙避孕药,这些因素有助于免疫细胞在这些不同的部分的变异性.
主要方法:
- 单胞胎双胞胎子宫内膜和外周血液中的免疫细胞的系统级分析.
- 组织部分之间的免疫细胞表型的比较评估.
- 评估细胞巨乳病毒感染和荷尔蒙避孕对免疫细胞分布的影响.
主要成果:
- 大多数外周血液免疫细胞表型表现出高遗传性.
- 子宫内膜免疫细胞显示出更大的变异性,表明环境因素的影响更大.
- 细胞巨乳病毒感染主要影响周围血液免疫细胞,对子宫内膜免疫细胞的影响有限.
- 荷尔蒙避孕药显著改变了局部子宫内膜免疫细胞的组成,但对全身的影响最小.
结论:
- 免疫系统的变异及其影响因素是特定于组织的.
- 与外围血液相比,环境因素在塑造人类子宫内的免疫细胞组成方面起着更为主导的作用.
- 像荷尔蒙避孕药这样的局部因素可以深刻地影响组织特异性免疫力,而不会对系统产生重大影响.
相关概念视频
02:07Oogenesis
63.7K
In human women, oogenesis produces one mature egg cell or ovum for every precursor cell that enters meiosis. This process differs in two unique ways from the equivalent procedure of spermatogenesis in males. First, meiotic divisions during oogenesis are asymmetric, meaning that a large oocyte (containing most of the cytoplasm) and minor polar body are produced as a result of meiosis I, and again following meiosis II. Since only oocytes will go on to form embryos if fertilized, this unequal...
63.7K
02:30Genomic Imprinting and Inheritance
34.4K
Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
34.4K
03:17Inheritance of Chromatin Structures
6.2K
Epigenetics is the study of inherited changes in a cell's phenotype without changing the DNA sequences. It provides a form of memory for the differential gene expression pattern to maintain cell lineage, position-effect variegation, dosage compensation, and maintenance of chromatin structures such as telomeres and centromeres. For example, the structure and location of the centromere on chromosomes are epigenetically inherited. Its functionality is not dictated or ensured by the underlying...
6.2K