共查询到19条相似文献，搜索用时 281 毫秒
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细胞因子是免疫活性细胞和其它细胞分泌的具有多种生物活性的多肽或蛋白质,这些细胞因子是重要的信息传递物质,特别在免疫、炎症和造血系统等生物学反应过程中具有重要的作用。细胞因子用于重组疫苗上的研究已成为生物学研究中最活跃的领域之一。在基因工程疫苗研制中,常把细胞因子基因（如IL-2、IL-1等）和保护抗原基因连接在一起,构成融合蛋白．以增强疫苗的抗体产生和细胞免疫水平。以干扰素和白细胞介素为例,叙述了细胞因子在免疫增强剂和免疫治疗剂、构建新型基因工程苗等方面的主要研究进展。 相似文献
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白细胞介素6（IL-6）是由多种细胞产生并具有复杂生物学功能的细胞因子,是动物机体内重要的细胞因子之一,它在调节免疫应答、诱导急性期蛋白、调节造血功能方面起着十分重要作用。本文就鸡IL-6在分子生物学、生物活性检测方面的研究进展及其应用前景等进行综述。 相似文献
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李爽 《畜牧兽医科技信息》2013,(2)
白细胞介素-2(interleukin-2,IL-2)主要是由激活的T淋巴细胞产生的一类重要的细胞因子,在机体免疫方面具有重要作用.因此它一直是研究得最为广泛的细胞因子之一.本文主要就IL-2的生物学特性,与免疫抑制的关系,作为免疫增强剂和免疫治疗剂,以及用于构建新型基因工程疫苗等进行了综述. 相似文献
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细胞因子是一类由造血系统、免疫系统或炎症反应中的活化细胞产生的具有高活性多功能的小分子多肽、蛋白质或糖蛋白。它们主要通过自分泌或旁分泌的方式在机体的免疫应答、炎症反应、物质代谢和神经内分泌以及生长发育等多个方面发挥重要作用。许多重组细胞因子已在一些动物疾病预防、免疫治疗和构建新一代基因工程苗等方面显示出广阔的应用前景。以细胞因子作为免疫佐剂可能是解决目前众多疫苗，特别是寄生虫疫苗效果不良或不稳定问题的有效途径之一。细胞因子在动物疫痛上的防治应用将会为畜牧业生产创造巨大的经济效益。 相似文献
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新发现的几种禽细胞因子及其研究进展 总被引：2，自引：0，他引：2
随着研究的不断深入，发现几乎机体所有的免疫反应都有细胞因子直接的参与，因此细胞因子一直的免疫学研究中的热点。近年来禽类细胞因子的研究进展迅速，许多对应于哺乳动物的禽细胞因子被发现。本文从基因的核苷酸和氨基酸序列特点、重组蛋白的生物学活性和功能等分子水平上综述了近3年来新发现的鸡白细胞介素-15、-18、火鸡白细胞介素-2、γ-干扰素及鸭γ-干扰素等在机体免疫反应中具有重要调节作用，具有疫苗增强剂潜在应用价值的禽类细胞因子的研究进展，同时与哺乳动物进行了比较。 相似文献
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Dunham SP 《Journal of Feline Medicine and Surgery》1999,1(1):7-14
Cytokines are soluble proteins produced by nucleated cells throughout the body. They have wide ranging effects on cell growth and differentiation, mediating immune responses, haemopoiesis and tissue repair. Advances in recombinant DNA technology have led to a vast increase in knowledge of their biological properties and subsequently their use in human clinical trials. The use of human cytokines in feline medicine has been of limited success as the action of cytokines is often species restricted or their activity may be neutralized due to antibody formation. Recently, however, many feline cytokines have been cloned which raises the possibility of their future use in the management and prevention of feline disease. Ultimately, they may find widespread clinical uses including the treatment of cancer, cytopenias and viral infections and as vaccine adjuvants. 相似文献
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长链非编码RNA(lncRNA)曾经被人们认为是转录过程中的“垃圾”,翻译过程中的“噪声”。但越来越多的研究发现其在转录的整个过程中具有调控作用,可以参与细胞内的多种生物学调控。之前,lncRNA在人类的疾病、细胞分化等方面得到了高度注视和研究,而在家畜上的研究相对滞后,文章主要综述了lncRNA的生物学功能及在猪上的研究进展,为lncRNA在家畜上研究和应用提供参考。 相似文献
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Recent studies on the role of carotenoids in aquaculture have investigated their function in regulating pigmentation, growth, survival, and immune activity of aquatic animals. These carotenoids include astaxanthin, canthaxanthin, lutein, zeaxanthin, and tunaxanthin. Astaxanthin and canthaxanthin are the main synthetic carotenoids used world-wide in the aquaculture industry. They play an important role in protecting cells and organisms against photosensitized oxidations. Direct evidence of carotenoids functioning as antioxidants in vivo has been reported in animal models. In addition to their established biological effects as antioxidants, carotenoids appear to have a great variety of cellular actions that make them remarkable physiological modulators. Consequently, recent attention has been focused on improving our understanding of carotenoids on the physiology and metabolism in aquatic animals with a view to enhance the efficacy of astaxanthin as a carotenoid pigment. This review aims to summarize the function and research progress of carotenoids in aquaculture. We discuss the methods used to study the absorption, transport, metabolic transformation and deposition of carotenoids, and their spatial and temporal expression. 相似文献
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CircRNAs are a new member of endogenous RNAs, which characterized by a closed-loop structure without terminated 5′ caps and 3′ tails via covalent bonding, which are evolutionarily conserved among different species and often exhibit tissue or developmental stage-specific expression. So far, thousands of circRNAs have been discovered in eukaryotic cells. CircRNAs are more stable due to its resistance to exonuclease implying important biological functions in all kingdoms of life. They could function as miRNA sponges, interfere with splicing and bind to protein to regulate the expression of host genes and so on. In addition, emerging evidence suggests that circRNAs are closely related to a series of physiological processes in livestock and poultry. In this review, we summarized the biogenesis mechanism, major biological function and detection methods and focused on research advance of circRNAs in livestock and poultry, aiming at providing certain reference value and novel techniques for the development of new molecular genetic markers and breeding of livestock and poultry. Meanwhile, we hope this review could show significant prospect for other researches. 相似文献
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脂质体在生物领域内的研究进展 总被引：1，自引：0，他引：1
从Allison首次报道脂质体具有免疫佐剂效应以来,脂质体在生物领域的研究取得了很大的进展,目前已成为生物领域内的一项高新技术。脂质体作为基因载体主要被应用于基因转染和基因组功能研究,并取得了较大的成绩。作为一种新的药物剂型,脂质体在生物药品的制剂技术中得到了广泛的应用,它除了用做疫苗的佐剂之外,还被用作激素类、多肽类、酶类等药物的载体,从而开辟了生物药制剂技术的新时代。尽管脂质体这种新技术在生物领域内具有极其广阔的应用前景,但脂质体在该领域的研究应用中存在着较多的技术难题。文章对脂质体在生物领域内的研究进展进行了详尽的叙述,可为脂质体在生物领域内的进一步研究提供参考。 相似文献
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Animal anti-parasitical drugs are mainly used to prevent and control animal parasitosis, and also an effective way to protect the healthy development of animal husbandry and public health security.The efficacy of anti-parasitical drugs depends on the interaction between drug molecular and different target tissues and target cells of parasite or animal.Because of the variety of anti-parasitical drugs, the anti-parasitical mechanisms are complex.With the development of new anti-parasitical drugs and the depth of scientific research, especially the development of chemical synthesis and biological pharmaceutical technology, the variety and quantity of anti-parasitical drugs constantly increase.With the discovery of new drug structure and its action target, the study on the mechanism is constantly deep.The author mainly summarized the research progress on action mechanism of anti-parasitical drugs. 相似文献
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干扰素-ε（IFN-ε）是新发现的一种Ⅰ型干扰素（IFNs），是由多种细胞分泌的一类细胞因子，其本质是一种糖蛋白，可间接发挥抗病毒、免疫调节和抗肿瘤的生物学活性。但与其他Ⅰ型干扰素不同，IFN-ε的产生不需要病毒诱导，其由黏膜上皮细胞组成型表达，并受激素调节，在黏膜免疫中具有重要作用。目前相关研究报道较少，本文就人和不同动物IFN-ε的起源、体内分布规律，以及对生殖系统的保护、神经系统的调节及抗病毒等研究进展进行综述，以便进一步了解和开发新型干扰素。 相似文献
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Bactericidal/permeability-increasing protein (BPI) has a strong effect on sterilization (mainly for G- bacteria),neutralizing the activity of lipopolysaccharide (LPS) and enhancing the phagocytosis of mononuclear cells and neutrophils to pathogenic bacteria.The biological functions of BPI have been researched widely in recent years,which is known as "super antibiotic" and has been explored by many scholars as a candidate gene for resistance.This author summarized the research progress and application prospect of the BPI gene in the pig resistant breeding by introducing the structure,biological function of BPI gene and its relationship with the resistance,which was aimed to provide theoretical references and basis for the function research of pig BPI gene and its practical application in resistance breeding in future. 相似文献