相关实验视频

Updated: Jul 25, 2025

Author Spotlight: Analyzing Bone Marrow Microenvironment in Murine Hematological Malignancies

Author Spotlight: Analyzing Bone Marrow Microenvironment in Murine Hematological Malignancies

Published on: November 10, 2023

在粘膜多糖症患者的白细胞失衡患者

Nuno Lopes¹, Maria L Maia¹, Cátia S Pereira^1,2

¹Instituto de Biologia Molecular e Celular (IBMC), Universidade do Porto, 4200-135 Porto, Portugal.

|June 28, 2023

概括

粘多糖症 (MPS) 是一种罕见的遗传性疾病. 这项研究发现,与MPS II患者不同,MPS VI患者的免疫细胞发生了变化,特别是减少了自然杀伤细胞和单细胞,T细胞群的变化,与MPS II患者不同.

科学领域:

免疫学免疫学免疫学
遗传学是一个遗传学.
生物化学生物化学

背景情况:

粘多糖症 (MPS) 是一种罕见的遗传性溶酶体储存疾病 (LSD),影响糖氨基酸糖的降解.
MPS II的结果来自于IDS基因突变,导致iduronate-2-sulfatase缺乏和heparan/dermatan硫酸盐的积累.
MPS VI源于ARSB基因突变,导致阿里硫酶B缺乏和皮肤硫酸盐的积累.

研究的目的:

调查II型 (MPS II) 和VI型 (MPS VI) 粘多糖症患者的免疫系统变化.
将MPS II和MPS VI患者的白细胞群与健康对照群进行比较.
在MPS患者中识别疾病特异性免疫细胞变化.

主要方法:

对被诊断患有MPS II和MPS VI的患者白细胞群的分析.
在MPS患者和对照组之间比较免疫细胞 (NK,单细胞,T,NKT,B细胞) 的百分比.
在MPS患者中评估T细胞子集 (原始与记忆).

主要成果:

与对照组相比,MPS VI患者的自然杀手 (NK) 细胞和单细胞的百分比下降.
在MPS II或MPS VI患者中没有观察到T,不变NKT或B细胞百分比的显著变化.
与对照组相比,MPS VI患者表现出更高的原始T细胞频率和更低的记忆T细胞频率.

结论:

这项研究揭示了白细胞群中的MPS VI特异性变化,包括NK细胞,单细胞和T细胞子集.
这些发现表明,MPS VI中特定的累积基质和酶缺乏对免疫系统组成有独特的影响.
对MPS疾病免疫系统变化的进一步研究可以为治疗策略提供信息.

关键词:

在T细胞,T细胞.葡萄糖氨基酸糖甘油葡萄糖甘油不变的自然杀手T (iNKT) 细胞血清细胞是白细胞.lysosomal 储存疾病 lysosomal 储存疾病粘多糖糖化物 (mucopolysaccharidoses) 是一种多糖化物.

更多相关视频

Visualizing Lung Cellular Adaptations during Combined Ozone and LPS Induced Murine Acute Lung Injury

Visualizing Lung Cellular Adaptations during Combined Ozone and LPS Induced Murine Acute Lung Injury

Published on: March 21, 2021

Author Spotlight: Dendritic Cells Maturation Using Sialidases-Based Enzymatic Treatment of the Cell Surface

Author Spotlight: Dendritic Cells Maturation Using Sialidases-Based Enzymatic Treatment of the Cell Surface

Published on: October 20, 2023

相关概念视频

Disorders of Leukocytes

Disorders of Leukocytes

Leukocyte disorders can lead to either leukopenia, characterized by an abnormally low leukocyte count, or leukocytosis, marked by a very high leukocyte number.
Leukopenia may result from bone marrow disorders, autoimmune diseases, and infectious diseases. For example, conditions such as multiple myeloma and aplastic anemia can impair the bone marrow's ability to produce adequate leukocytes. Similarly, autoimmune diseases like lupus and viral infections such as HIV can prompt the immune...

Lysosomal Hydrolases

Lysosomal Hydrolases

Lysosomes are the site for the degradation of macromolecules and biological polymers released during membrane trafficking events such as secretory, endocytic, autophagic, and phagocytic pathways. The membrane-enclosed area of the lysosome, called the lumen, contains hydrolytic enzymes active in an acidic environment. These acid hydrolases are functional at a pH between 4.5 and 5 and are involved in cellular processes such as cell signaling, energy metabolism, restoration of the plasma membrane,...

Differentiation of Common Myeloid Progenitor Cells

Differentiation of Common Myeloid Progenitor Cells

Common myeloid progenitors (CMPs) are oligopotent cells that can differentiate into granulocytes and macrophages. Granulocytes and macrophages are essential for protecting the body against bacterial, viral, or fungal infections. They migrate from the bone marrow into the circulating blood to reach specific tissue sites where they differentiate and help in immune surveillance. However, they survive only for a few days and must be continuously made available to the organism to maintain a robust...

Structure and Function of Leukocytes

Structure and Function of Leukocytes

An adult in good health typically has between 4,500 and 11,000 leukocytes, or white blood cells, per microliter of blood, which constitutes about 1% of the total blood volume. Unlike red blood cells, white blood cells contain a nucleus and other cellular organelles but do not have hemoglobin. Most white blood cells reside in connective tissues, particularly in lymphatic organs such as the lymph nodes, with only a small fraction present in circulating blood.
White blood cells protect the body...

Proteoglycans

Proteoglycans

Glycans, a class of complex heterogeneous molecules, can be covalently attached to proteins to form glycosylated proteins that regulate various physiological and pathological processes. Glycosylated proteins or glycoproteins comprise N-linked and O-linked oligosaccharides. O-glycosylation is the most common type of protein glycosylation. Here, glycans attach to the oxygen atom of the hydroxyl groups of Serine or Threonine residues. O-linked glycosylation occurs later in protein processing,...

Glycosaminoglycans

Glycosaminoglycans

Glycosaminoglycans (GAGs), also known as mucopolysaccharides, are long and linear polymers comprising of specific repeating disaccharides - the amino sugar that can be N-acetylglucosamine or N-acetylgalactosamine, and a uronic acid that is usually glucuronic acid or iduronic acid.
GAGS are found in the extracellular matrix of vertebrates, invertebrates, and bacteria. Due to their polar nature they attract water, and serve as excellent lubricants or shock absorbers in an animal body.
Hyaluronic...