分泌的蛋白1 (SPP1) 调节成熟脂肪细胞的细胞内代谢程序,由非向的代谢学揭示
1Inflammaging Translational Research Center, Ajou University Medical Center, Suwon 16499, Republic of Korea.
International journal of molecular sciences
|February 27, 2026
概括
分泌的蛋白1 (SPP1) 影响脂肪细胞的新陈代谢. 低剂量的SPP1诱导了显著的细胞内重塑,而高剂量的SPP1激活了矩阵金属蛋白酶-12,表明对脂肪组织的剂量依赖作用.
科学领域:
- 代谢学 代谢学 代谢学
- 脂肪组织生物学 脂肪组织生物学
- 分子内分泌学分子内分泌学
背景情况:
- 分泌的蛋白1 (SPP1),也称为骨质素 (OPN),是脂肪组织炎症和重塑的关键因素.
- 了解SPP1在脂肪细胞代谢中的作用对于代谢疾病研究至关重要.
研究的目的:
- 研究SPP1对差异化3T3-L1脂肪细胞的代谢概况的剂量依赖性影响.
- 为了确定在脂肪细胞中由SPP1调节的特定代谢途径.
主要方法:
- 采用非向液体色谱-质谱 (LC-MS) 基的代谢学.
- 差异化的3T3-L1脂肪细胞被SPP1的不同度 (100ng/mL和500ng/mL) 处理.
- 进行了多变量统计分析 (PCA,PLS-DA,稀疏的PLS-DA) 和途径丰富分析.
主要成果:
- 与高剂量SPP1 (500 ng/mL) 相比,低剂量的SPP1 (100 ng/mL) 诱导了更明显的细胞内代谢重塑.
- 观察到不同的代谢概况,低剂量的SPP1改变了碳水化合物和氨基酸代谢 (例如,酸酸盐通路).
- 高剂量的SPP1选择性诱导矩阵金属蛋白酶-12 (MMP-12),表明与重塑相关的反应.
结论:
- 在成熟的脂肪细胞中,SPP1充当了代谢程序的剂量依赖调节器.
- SPP1影响细胞内代谢重塑,并且可以在较高度下触发特定的重塑相关反应.
更多相关视频
09:20An Adipocyte Cell Culture Model to Study the Impact of Protein and Micro-RNA Modulation on Adipocyte Function
Published on: May 4, 2021
4.3K
06:08Author Spotlight: Semi-Automated Isolation of the Stromal Vascular Fraction from Murine White Adipose Tissue Using a Tissue Dissociator
Published on: May 19, 2023
3.0K
相关概念视频
Phosphoinositides and PIPs
10.4K
Phosphoinositides are a group of phospholipids containing a glycerol backbone with two fatty acid chains and a phosphate attached to a myoinositol sugar ring. The inositol head group extends into the cytoplasm, where it is modified by adding phosphate groups to form phosphatidylinositol phosphates or PIPs.
Different phosphoinositides are synthesized and recruited on the cytosolic face of the plasma membrane. The localization of specific phosphoinositides concentrated in separate membrane...
Different phosphoinositides are synthesized and recruited on the cytosolic face of the plasma membrane. The localization of specific phosphoinositides concentrated in separate membrane...
10.4K
Regulation of Metabolism
11.9K
Cellular needs and conditions vary from cell to cell and change within individual cells over time. For example, the required enzymes and energetic demands of stomach cells are different from those of fat storage cells, skin cells, blood cells, and nerve cells. Furthermore, a digestive cell works much harder to process and break down nutrients during the time that closely follows a meal compared with many hours after a meal. As these cellular demands and conditions vary, so do the amounts and...
11.9K
cAMP-dependent Protein Kinase Pathways
8.7K
Cyclic Adenosine Monophosphate (cAMP) is an essential second messenger that activates protein kinase A (PKA) and regulates various biological processes. A single epinephrine molecule binds to GPCR and activates several heterotrimeric G proteins, each stimulating multiple adenylyl cyclase, amplifying the signal, and synthesizing large numbers of cAMP molecules. Small changes in cAMP concentration affect PKA activity. The binding of four cAMP molecules induces a conformational change in PKA,...
8.7K
Cell Specific Gene Expression
16.7K
Multicellular organisms contain a variety of structurally and functionally distinct cell types, but the DNA in all the cells originated from the same parent cells. The differences in the cells can be attributed to the differential gene expression. Liver cells, whose functions include detoxification of blood, production of bile to metabolize fats, and synthesis of proteins essential for metabolism, must express a specific set of genes to perform their functions. Gene expression also varies with...
16.7K
Protein Kinases and Phosphatases
15.3K
Proteins undergo chemical modifications that trigger changes in the charge, structure, and conformation of the proteins. Phosphorylation, acetylation, glycosylation, nitrosylation, ubiquitination, lipidation, methylation, and proteolysis are various protein modifications that regulate protein activity. Such modifications are usually enzyme-driven.
Protein kinases
Many proteins in the cell are regulated by phosphorylation, the addition of a phosphate group. A family of enzymes called kinases...
Protein kinases
Many proteins in the cell are regulated by phosphorylation, the addition of a phosphate group. A family of enzymes called kinases...
15.3K
