pinocytosis
简明释义
英[ˌpaɪnəʊsaɪˈtəʊsɪs]美[ˌpɪnəsaɪˈtoʊsɪs;ˌpaɪnəsaɪˈto
n. 胞饮;吞饮;饮液
复 数 p i n o c y t o s e s
英英释义
单词用法
细胞内吞作用 | |
内吞机制 | |
进行内吞作用 | |
内吞过程 |
同义词
反义词
胞吐作用 | 胞吐作用是细胞排出物质的过程。 | ||
细胞凋亡 | Apoptosis is a form of programmed cell death that occurs in multicellular organisms. | 细胞凋亡是一种在多细胞生物中发生的程序化细胞死亡形式。 |
例句
1.The dye trypan blue has a remarkable biphasic effect on pinocytosis by yolk sal .
染料锥虫蓝对卵黄囊的胞饮作用具有明显的双向作用。
2.Pinocytosis of dextran was unaffected .
对葡聚糖的胞饮作用无影响。
3.The dye Trypan Blue has a remarkable biphasic effect on pinocytosis by yolk sal.
染料锥虫蓝对卵黄囊的胞饮作用具有明显的双向作用。
4.This vesiculation phenomenon, pinocytosis, certainly occurs in some animal and higher green plants.
这种泡囊化现象即胞饮作用确实发生于某些动物和高等绿色植物细胞。
5.Drugs may cross a biologic barrier by passive diffusion, facilitated passive diffusion, active transport, or pinocytosis.
药物可通过被动扩散、易化被动扩散、主动转运或胞饮作用等方式穿越生物屏障。
6.Pinocytosis: Fluid or particles are engulfed by a cell.
胞饮作用胞饮指细胞呑入液体或微粒。
7.Drugs may cross a biologic barrier by passive diffusion, facilitated passive diffusion, active transport, or pinocytosis.
药物可通过被动扩散、易化被动扩散、主动转运或胞饮作用等方式穿越生物屏障。
8.Pinocytosis probably plays a minor role in drug transport, except for protein drugs.
除蛋白质类药物外,胞饮在药物转运过程作用不大。
9.Pinocytosis of dextran was unaffected.
对葡聚糖的胞饮作用无影响。
10.Certain cancer cells exploit pinocytosis to intake growth factors from their environment.
某些癌细胞利用吞饮作用从其环境中摄取生长因子。
11.In the process of nutrient absorption, cells utilize pinocytosis to engulf extracellular fluid.
在营养吸收的过程中,细胞利用吞饮作用来吞噬细胞外液。
12.Research shows that pinocytosis plays a critical role in cellular hydration.
研究表明,吞饮作用在细胞水合作用中起着关键作用。
13.During pinocytosis, the cell membrane invaginates to form a vesicle.
在吞饮作用过程中,细胞膜内陷形成囊泡。
14.The immune system can use pinocytosis to capture and process antigens.
免疫系统可以利用吞饮作用捕获和处理抗原。
作文
In the complex world of cellular biology, various processes are essential for the survival and functioning of cells. One such process is pinocytosis, which is often referred to as 'cell drinking.' This term describes a specific type of endocytosis, where cells engulf liquid substances from their surrounding environment. Unlike phagocytosis, which involves the uptake of solid particles, pinocytosis allows cells to take in fluids and dissolved solutes. Understanding this process is crucial for comprehending how cells interact with their environment and maintain homeostasis.Cells utilize pinocytosis to absorb nutrients, signaling molecules, and other important substances necessary for their growth and function. The process begins when the cell membrane invaginates, or folds inward, to form a small pocket that encloses the extracellular fluid. This pocket then pinches off from the membrane, creating a vesicle filled with the ingested liquid. The vesicle subsequently merges with lysosomes, where its contents are broken down and utilized by the cell.The significance of pinocytosis extends beyond mere nutrient absorption. It plays a vital role in various physiological processes, including immune responses and tissue repair. For instance, immune cells utilize pinocytosis to sample their environment, capturing antigens and pathogens that may pose a threat to the organism. By doing so, they can initiate appropriate immune responses to combat infections.Moreover, pinocytosis is also involved in the regulation of cellular signaling pathways. Many signaling molecules, such as hormones and growth factors, are present in the extracellular fluid. Cells can use pinocytosis to internalize these molecules, allowing them to respond to changes in their environment effectively. This ability to sense and respond to external signals is critical for maintaining cellular homeostasis and ensuring proper functioning.In addition to its biological significance, pinocytosis has implications in medical research and drug delivery systems. Scientists are exploring ways to exploit this natural cellular process to enhance drug delivery. By encapsulating therapeutic agents within nanoparticles that mimic the properties of the substances taken up via pinocytosis, researchers aim to improve the efficiency of drug absorption in target cells. This approach could lead to more effective treatments for various diseases, including cancer and autoimmune disorders.However, it is essential to recognize that pinocytosis is not without its challenges. The efficiency of this process can be influenced by several factors, including the type of cell, the nature of the substances being absorbed, and the overall health of the organism. Understanding these factors can help researchers develop better strategies for harnessing pinocytosis in therapeutic applications.In conclusion, pinocytosis is a fundamental cellular process that enables cells to take in fluids and dissolved substances from their environment. Its importance in nutrient absorption, immune responses, and cellular signaling cannot be overstated. As research continues to uncover the intricacies of pinocytosis, we may find new ways to utilize this process in medicine, ultimately improving health outcomes for many individuals. The study of pinocytosis not only enhances our understanding of cell biology but also opens doors to innovative therapeutic strategies that could benefit humanity as a whole.
细胞吞饮是细胞生物学中一个重要的过程,指的是细胞通过内吞作用摄取周围环境中的液体物质。与吞噬作用不同,细胞吞饮允许细胞吸收液体和溶解的溶质。理解这一过程对于理解细胞如何与环境相互作用和维持稳态至关重要。细胞利用细胞吞饮来吸收营养物质、信号分子和其他对其生长和功能至关重要的物质。该过程开始时,细胞膜向内凹陷,形成一个小口袋,包裹住细胞外液。这个口袋随后从膜上断裂,形成一个充满摄取液体的囊泡。囊泡随后与溶酶体融合,其中的内容物被分解并被细胞利用。细胞吞饮的重要性不仅限于营养物质的吸收。它在各种生理过程中也发挥着重要作用,包括免疫反应和组织修复。例如,免疫细胞利用细胞吞饮来采样其环境,捕获可能对生物体构成威胁的抗原和病原体。通过这样做,它们可以启动适当的免疫反应以对抗感染。此外,细胞吞饮还涉及细胞信号通路的调节。许多信号分子,如激素和生长因子,存在于细胞外液中。细胞可以利用细胞吞饮来内化这些分子,使其能够有效地响应环境变化。这种感知和响应外部信号的能力对于维持细胞稳态和确保正常功能至关重要。除了生物学意义,细胞吞饮在医学研究和药物递送系统中也具有重要意义。科学家们正在探索利用这一自然细胞过程来增强药物递送的方式。通过将治疗剂封装在模仿通过细胞吞饮摄取的物质特性的纳米颗粒中,研究人员旨在提高药物在目标细胞中的吸收效率。这种方法可能导致对各种疾病(包括癌症和自身免疫性疾病)的更有效治疗。然而,必须认识到,细胞吞饮并非没有挑战。该过程的效率可能受到多种因素的影响,包括细胞类型、被吸收物质的性质以及生物体的整体健康状况。理解这些因素可以帮助研究人员开发更好的策略,以在治疗应用中利用细胞吞饮。总之,细胞吞饮是一个基本的细胞过程,使细胞能够从其环境中摄取液体和溶解物质。它在营养吸收、免疫反应和细胞信号传导中的重要性不容小觑。随着研究不断揭示细胞吞饮的复杂性,我们可能会发现利用这一过程的新方法,从而最终改善许多人的健康结果。对细胞吞饮的研究不仅增强了我们对细胞生物学的理解,还为创新的治疗策略打开了大门,这将惠及全人类。