相关实验视频
Updated: May 10, 2026

07:24
A Protocol for the Production of KLRG1 Tetramer
Published on: January 13, 2010
对c-kit proto-oncogene 的一个连接体的鉴定
D E Williams1, J Eisenman, A Baird
1Department of Experimental Hematology, Immunex Corporation, Seattle, Washington 98101.
Cell
|October 5, 1990
概括
研究人员净化了一种新型巨细胞生长因子 (MGF),并证实它与c-kit蛋白结合. 这一发现有助于我们更好地理解巨细胞的增殖和相关的信号通路.
科学领域:
- 免疫学和细胞生物学
- 分子和细胞瘤学分子和细胞瘤学
背景情况:
- 乳腺细胞在免疫反应和过敏反应中起着至关重要的作用.
- 调节巨细胞增殖的生长因子是治疗干预的关键目标.
- 这种c-kit原型瘤基因编码了一个受体氨酸激酶,它对巨细胞发育至关重要.
研究的目的:
- 为了净化和表征一种新的巨细胞生长因子 (MGF).
- 为了研究MGF和c-kit原型瘤基因之间的关系.
- 确认MGF作为c-kit受体的功能性联体.
主要方法:
- 从小鼠 stromal 细胞系的超体中净化 MGF.
- 使用 [3H] 提米丁合并试验,选干白素3依赖细胞系对MGF响应性的查.
- 使用125I标记的MGF和免疫沉进行交叉链接研究,以证实配体-受体相互作用.
主要成果:
- 净化了一种新型的巨细胞生长因子 (MGF),并确定其N端氨基酸序列.
- 细胞系的MGF诱导的增殖与c-kit原型瘤基因mRNA表达相关.
- 通过交叉链接和免疫沉实验,MGF被证实是c-kit受体的配体.
结论:
- MGF是一种新型生长因子,可刺激乳腺腺细胞的增殖.
- MGF作为c-kit受体氨酸激酶的连接体起作用.
- 这一发现为了解杆细胞调节和c-kit信号传递提供了分子基础.
相关概念视频
Enzyme-linked Receptors
Enzyme-linked receptors are proteins that act as both receptor and enzyme, activating multiple intracellular signals. This is a large group of receptors that include the receptor tyrosine kinase (RTK) family. Many growth factors and hormones bind to and activate the RTKs.
Neurotrophin (NT) receptors are a family of RTKs, including trkA, trkB, and trkC (tropomyosin-related kinase) receptors. TrkA is specific for nerve growth factor (NGF), neurotrophin-6, and neurotrophin-7. TrkB binds...
Neurotrophin (NT) receptors are a family of RTKs, including trkA, trkB, and trkC (tropomyosin-related kinase) receptors. TrkA is specific for nerve growth factor (NGF), neurotrophin-6, and neurotrophin-7. TrkB binds...
Mitogens and the Cell Cycle
Mitogens and their receptors play a crucial role in controlling the progression of the cell cycle. However, the loss of mitogenic control over cell division leads to tumor formation. Therefore, mitogens and mitogen receptors play an important role in cancer research. For instance, the epidermal growth factor (EGF) - a type of mitogen and its transmembrane receptor (EGFR), decides the fate of the cell's proliferation. When EGF binds to EGFR, a member of the ErbB family of tyrosine kinase...
Receptor Tyrosine Kinases
Receptor tyrosine kinases or RTKs are membrane-bound receptors that phosphorylate specific tyrosine on protein substrates. RTKs regulate cellular growth, differentiation, survival, and migration. They contain an extracellular ligand binding domain, a transmembrane domain, and a cytosolic tail with intrinsic kinase activity. Several extracellular signaling molecules activate RTKs in one or more ways and relay the signal downstream. Ligands such as platelet-derived growth factor (PDGF) or...
PI3K/mTOR/AKT Signaling Pathway
The mammalian target of rapamycin (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1 (mTORC1) and mTOR complex 2 (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast, mTORC2 consists of a rapamycin-insensitive companion...
Transducer Mechanism: Enzyme-Linked Receptors
Enzyme-linked receptors are cell-surface receptors acting as an enzyme or associating with an enzyme intracellularly. They make excellent drug targets. Drugs can bind to the extracellular ligand-binding domain or directly affect their enzymatic domain and alter their activity.
Major types that are helpful drug targets include:
Major types that are helpful drug targets include:

