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C. Arce C. Lucena A. Moreno J.J. Garrido 《Comparative immunology, microbiology and infectious diseases》2014
Salmonella enterica serovar typhimurium (S. typhimurium) is one of the most frequent Salmonella serotypes isolated from European pigs. Despite the advances in understanding the mechanisms involved in host–pathogen interactions and host cell responses to S. typhimurium, the global change that occurs in naturally exposed populations has been poorly characterized. Here, we present a proteomics study on intestinal mucosa of pigs naturally infected with S. typhimurium, in order to better understand the pathogenesis of salmonellosis and the pathways which might be affected after infection. Samples were analyzed by 2D-DIGE and 44 different proteins exhibited statistically significant differences. The data set was analyzed by employing the Ingenuity Pathway Analysis and the physiological function most significantly perturbed were immunological and infectious disease, cellular assembly and organization and metabolism. The pathways implicated in the porcine immune response to S. typhimurium were gluconeogenesis and Rho GDI/RhoA signaling, and our results suggest that keratins and the intermediate filaments could play an important role in the damage of the mucosa and in the success of infection. The role of these findings in salmonellosis has been discussed, as well as the importance of analyzing naturally infected animals to have a complete picture of the infection. Also, we compared the results found in this work with those obtained in a similar study using experimentally infected animals. 相似文献
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ABSTRACT1. Reducing excessive chicken body fat deposition is a main goal of the poultry industry. Preadipocytes are important in adipose tissue growth and development.2. To discover proteins related to chicken fat deposition, two-dimensional fluorescence difference gel electrophoresis (2-D DIGE) was used to identify differentially expressed proteins in preadipocytes derived from Northeast Agricultural University broiler lines divergently selected for abdominal fat content (NEAUHLF).3. A total of 46 differentially expressed protein spots were found in the preadipocytes between fat and lean broilers. Matrix-assisted laser desorption-ionisation time-of-flight mass spectrometry (MALDI-TOF-MS) analysis showed the protein spots corresponded to 33 different proteins. The proteins were mainly related to biological oxidation, cell proliferation, cytoskeleton, lipid metabolism, molecular chaperone, protein synthesis and signal transduction.4. From the perspective of protein expression, these results lay a foundation for further study of the genetic mechanism of broiler adipose tissue growth and development. 相似文献
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One of the main applications of serum proteomics is the identification of new biomarkers for animal disease or animal production. However, potential obstacles to these studies are the poor performance of affinity serum depletion methods based on human antigens when using animal samples, and loss of minor serum components bound to albumin and other proteins. In the present study, we have analyzed the efficiency and reproducibility of the ProteoMiner® beads with bovine and porcine serum samples, and compared to a traditional immunoaffinity-based albumin and IgG depletion system specific for human samples. The ProteoMiner kit is based on the use of a combinatorial peptide binding library and intends to enrich low-abundance proteins. 相似文献
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Muhammad Aslam M. K Arumugam Kumaresan Savita Yadav Tushar K. Mohanty Tirtha K. Datta 《Reproduction in domestic animals》2019,54(5):786-794
The present study identified few potential proteins in the spermatozoa of buffalo bulls that can be used as an aid in fertility determination through comparative proteomics. The sperm proteome of high‐fertile buffalo bulls was compared with that of low‐fertile buffalo bulls using two‐dimensional difference gel electrophoresis (2D‐DIGE), and the differentially expressed proteins were identified through mass spectrometric method. The protein interaction network and the functional bioinformatics analysis of differentially expressed proteins were also carried out. In the spermatozoa of high‐fertile bulls, 10 proteins were found overexpressed and 15 proteins were underexpressed at the level of twofold or more (p ≤ 0.05). The proteins overexpressed in high‐fertile spermatozoa were PDZD8, GTF2F2, ZNF397, KIZ, LOH12CR1, ACRBP, PRSS37, CYP11B2, F13A1 and SPO11, whereas those overexpressed in low‐fertile spermatozoa were MT1A, ATP5F1, CS, TCRB, PRODH2, HARS, IDH3A, SRPK3, Uncharacterized protein C9orf9 homolog isoform X4, TUBB2B, GPR4, PMP2, CTSL1, TPPP2 and EGFL6. The differential expression ranged from 2.0‐ to 6.1‐fold between the two groups, where CYP11B2 was high abundant in high‐fertile spermatozoa and MT1A was highly abundant in low‐fertile spermatozoa. Most of the proteins overexpressed in low‐fertile spermatozoa were related to energy metabolism and capacitation factors, pointing out the possible role of pre‐mature capacitation and cryo‐damages in reducing the fertility of cryopreserved buffalo spermatozoa. 相似文献
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矮化杉木蛋白质组的差异凝胶电泳分析 总被引：2，自引：1，他引：2
建立具有高分辨率和稳定性的矮化杉木Cunninghamia lanceolata叶片蛋白质的双向电泳图谱,研究杉木矮化突变的机理。取同一生长环境下的野生型杉木及矮化突变型杉木新梢顶端的叶片,液氮研磨成粉末后用改良TCA-丙酮沉淀法提取总蛋白,分别用CY2和CY3标记,用DIGE技术进行分析。与野生型杉木相比,在矮化突变型杉木的叶片组织中,有14个蛋白质表达水平显著增加,另外15个蛋白质表达水平显著下降。所得的29个差异蛋白质可能与杉木矮化突变的发生有关。图3表3参9 相似文献
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R. C. Amey T. Schleicher J. Slinn M. Lewis H. Macdonald S. J. Neill P. T. N. Spencer-Phillips 《European journal of plant pathology / European Foundation for Plant Pathology》2008,122(1):41-55
A proteomic approach was used to identify host proteins altering in abundance during Peronospora viciae infection of a susceptible cultivar of pea (Pisum sativum cv. Livioletta). Proteins were extracted from fully developed pea leaflets at 4 days post-inoculation, before visible symptoms
were apparent. Cytoplasmic proteins and membrane- and nucleic acid-associated proteins from infected and control leaves were
examined using two-dimensional difference gel electrophoresis. The majority of proteins had a similar abundance in control
and infected leaves; however, several proteins were altered in abundance and twelve were found to have increased significantly
in the latter. These proteins were selected for either matrix-assisted laser desorption/ionisation time-of-flight mass spectrometry
or electro-spray ionisation quadrupole time-of-flight tandem mass spectrometry analysis following trypsin digestion, with
sequence identity being assigned to eight of the proteins. These included the ABR17 stress-response protein, the pathogen-induced
PI176 protein, three photosynthetic proteins, a glycine-rich RNA binding protein and two glyceraldehyde 3-phosphate dehydrogenases
(cytosolic and chloroplastic) which can be induced by a range of abiotic and biotic stresses in many plant species. The possible
roles of these proteins in the response of the pea plant during P. viciae infection are discussed. This study represents the first proteomic analysis of downy mildew infection of pea leaves, and
provides the basis for further work to elucidate molecular mechanisms of compatibility in P. viciae infections. 相似文献
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为鉴定与水稻草矮病毒(Rice grassy stunt virus,RGSV)侵染引起的水稻根系发育不良的相关蛋白,解析根系发育不良症状的形成机理以及水稻草矮病毒与水稻互作的分子机制,采用双向荧光差异凝胶电泳(2D-DIGE)结合基质辅助激光解析串联飞行时间质谱技术(MALDI-TOF-MS)对RGSV侵染水稻后根系的差异表达蛋白进行分离和鉴定,并对鉴定的差异表达蛋白进行GO聚类分析和KEGG生物通路注释。结果表明,差异倍数大于2的蛋白质点有56个,其中,表达丰度升高的点有34个,表达丰度下降的点有22个;质谱成功鉴定出27个蛋白质点,分属于25种蛋白质。GO聚类分析表明差异表达蛋白涉及14个生物学过程,在生物功能上分属10类。细胞组件分析显示差异表达蛋白定位于不同的细胞部位。KEGG通路分析显示差异蛋白参与了12个生物通路。 相似文献
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