pinocytotic

简明释义

英[ˌpɪnəˈsaɪtɪk]美[ˌpɪnəˈsaɪtɪk]

adj. 胞饮的；胞饮作用形成的

英英释义

单词用法

同义词

反义词

例句

1.Ultrastructurally, the tumor cells had tapering nuclei with long, delicate cytoplasmic processes associated with prominent subplasmalemmal pinocytotic vesicles.

在超微结构上，肿瘤细胞具有逐渐变细的细胞核，且细胞核具有长而细腻的胞浆突起，并与突出的浆膜下的胞吞小泡相关。

2.The appearance of pinocytotic vesicles is observed immediately.

立即观察胞饮囊泡的外形。

3.Ultrastructurally, the tumor cells had tapering nuclei with long, delicate cytoplasmic processes associated with prominent subplasmalemmal pinocytotic vesicles.

在超微结构上，肿瘤细胞具有逐渐变细的细胞核，且细胞核具有长而细腻的胞浆突起，并与突出的浆膜下的胞吞小泡相关。

4.During pinocytotic activity, small vesicles form to engulf extracellular fluid.

在吞饮活动中，小囊泡形成以吞噬细胞外液。

5.The cell membrane undergoes a pinocytotic process to absorb nutrients from the surrounding fluid.

细胞膜经历了一个吞饮过程，以从周围液体中吸收营养。

6.The pinocytotic mechanism is crucial for immune cells to sample antigens.

对于免疫细胞来说，吞饮机制对采样抗原至关重要。

7.Researchers observed that cancer cells exhibit increased pinocytotic behavior, allowing them to take in more nutrients.

研究人员观察到癌细胞表现出增强的吞饮行为，使它们能够摄取更多营养。

8.In kidney cells, pinocytotic uptake plays a role in reclaiming proteins from urine.

在肾细胞中，吞饮摄取在从尿液中回收蛋白质中起着作用。

作文

In the realm of cellular biology, the term pinocytotic refers to a specific form of endocytosis, where cells engulf extracellular fluid and its dissolved solutes. This process is vital for maintaining cellular homeostasis and acquiring nutrients, particularly in cells that do not have specialized mechanisms for nutrient uptake. The significance of pinocytotic activity can be observed in various biological contexts, including immune responses, tissue development, and the overall functioning of multicellular organisms.To understand the concept of pinocytotic processes, one must first appreciate the structure and function of the cell membrane. The cell membrane is composed of a lipid bilayer that acts as a barrier, controlling what enters and exits the cell. However, this barrier is not impermeable; it is dynamic and capable of facilitating the transport of substances through various mechanisms. One such mechanism is endocytosis, which encompasses different forms, including phagocytosis and pinocytotic uptake.While phagocytosis involves the ingestion of large particles, such as pathogens or cellular debris, pinocytotic uptake is characterized by the ingestion of liquid substances. This process begins when the cell membrane invaginates, forming a pocket that engulfs extracellular fluid. As the pocket deepens, it eventually pinches off, creating a vesicle filled with the ingested fluid. This vesicle then moves into the cytoplasm, where its contents can be processed and utilized by the cell.The importance of pinocytotic activity cannot be overstated. For instance, in the context of nutrient absorption, many epithelial cells in the intestines utilize pinocytotic mechanisms to take up essential nutrients from the digestive tract. Additionally, certain immune cells rely on pinocytotic processes to sample their environment, allowing them to detect and respond to pathogens effectively.Moreover, the study of pinocytotic mechanisms has implications for medical research and therapeutic interventions. Understanding how cells utilize this process can lead to advancements in drug delivery systems. For example, nanoparticles designed to mimic the size and characteristics of substances taken up through pinocytotic pathways can be engineered to deliver medications directly to target cells, enhancing treatment efficacy while minimizing side effects.In conclusion, the term pinocytotic encapsulates a crucial aspect of cellular biology, highlighting the intricate ways in which cells interact with their environment. By understanding the mechanisms and functions associated with pinocytotic processes, researchers can gain insights into various biological phenomena and develop innovative strategies for addressing health challenges. The exploration of pinocytotic activity continues to be a vibrant area of study, bridging the gap between fundamental biology and practical applications in medicine and biotechnology.

在细胞生物学的领域中，术语pinocytotic指的是一种特定形式的内吞作用，其中细胞吞噬细胞外液及其溶解的溶质。这个过程对于维持细胞内环境的稳定和获取营养至关重要，尤其是在没有专门机制进行营养吸收的细胞中。pinocytotic活动的重要性可以在各种生物背景中观察到，包括免疫反应、组织发育以及多细胞生物的整体功能。要理解pinocytotic过程的概念，首先必须欣赏细胞膜的结构和功能。细胞膜由脂质双层组成，作为屏障，控制着什么进入和退出细胞。然而，这个屏障并不是不渗透的；它是动态的，能够通过各种机制促进物质的运输。其中一种机制是内吞作用，它包含不同的形式，包括吞噬作用和pinocytotic摄取。虽然吞噬作用涉及摄取大型颗粒，如病原体或细胞碎片，但pinocytotic摄取的特点是摄取液体物质。这个过程始于细胞膜内陷，形成一个口袋，吞噬细胞外液。当口袋加深时，它最终会断裂，形成一个充满摄取液体的囊泡。这个囊泡随后移动到细胞质中，其内容物可以被细胞处理和利用。pinocytotic活动的重要性不可低估。例如，在营养吸收的背景中，肠道中的许多上皮细胞利用pinocytotic机制从消化道中摄取必需的营养。此外，某些免疫细胞依赖于pinocytotic过程来采样其环境，使它们能够有效地检测和响应病原体。此外，对pinocytotic机制的研究对医学研究和治疗干预具有重要意义。了解细胞如何利用这一过程可以带来药物递送系统的进步。例如，设计成模仿通过pinocytotic途径摄取的物质大小和特性的纳米颗粒，可以被工程化以直接将药物递送到目标细胞，从而增强治疗效果，同时最小化副作用。总之，术语pinocytotic概括了细胞生物学的一个关键方面，突显了细胞与其环境相互作用的复杂方式。通过理解与pinocytotic过程相关的机制和功能，研究人员可以深入了解各种生物现象，并开发创新策略来应对健康挑战。对pinocytotic活动的探索仍然是一个充满活力的研究领域，架起了基础生物学与医学和生物技术实际应用之间的桥梁。