Marine Life Science & Technology最新文献

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Group-specific functional patterns of mitochondrion-related organelles shed light on their multiple transitions from mitochondria in ciliated protists. 线粒体相关细胞器的群体特异性功能模式揭示了纤毛原生生物线粒体的多重转变。
IF 5.8 2区 生物学
Marine Life Science & Technology Pub Date : 2022-11-21 eCollection Date: 2022-11-01 DOI: 10.1007/s42995-022-00147-w
Zhicheng Chen, Jia Li, Dayana E Salas-Leiva, Miaoying Chen, Shilong Chen, Senru Li, Yanyan Wu, Zhenzhen Yi
{"title":"Group-specific functional patterns of mitochondrion-related organelles shed light on their multiple transitions from mitochondria in ciliated protists.","authors":"Zhicheng Chen, Jia Li, Dayana E Salas-Leiva, Miaoying Chen, Shilong Chen, Senru Li, Yanyan Wu, Zhenzhen Yi","doi":"10.1007/s42995-022-00147-w","DOIUrl":"10.1007/s42995-022-00147-w","url":null,"abstract":"<p><p>Adaptations of ciliates to hypoxic environments have arisen independently several times. Studies on mitochondrion-related organelle (MRO) metabolisms from distinct anaerobic ciliate groups provide evidence for understanding the transitions from mitochondria to MROs within eukaryotes. To deepen our knowledge about the evolutionary patterns of ciliate anaerobiosis, mass-culture and single-cell transcriptomes of two anaerobic species, <i>Metopus laminarius</i> (class Armophorea) and <i>Plagiopyla</i> cf. <i>narasimhamurtii</i> (class Plagiopylea), were sequenced and their MRO metabolic maps were compared. In addition, we carried out comparisons using publicly available predicted MRO proteomes from other ciliate classes (i.e., Armophorea, Litostomatea, Muranotrichea, Oligohymenophorea, Parablepharismea and Plagiopylea). We found that single-cell transcriptomes were similarly comparable to their mass-culture counterparts in predicting MRO metabolic pathways of ciliates. The patterns of the components of the MRO metabolic pathways might be divergent among anaerobic ciliates, even among closely related species. Notably, our findings indicate the existence of group-specific functional relics of electron transport chains (ETCs). Detailed group-specific ETC functional patterns are as follows: full oxidative phosphorylation in Oligohymenophorea and Muranotrichea; only electron-transfer machinery in Armophorea; either of these functional types in Parablepharismea; and ETC functional absence in Litostomatea and Plagiopylea. These findings suggest that adaptation of ciliates to anaerobic conditions is group-specific and has occurred multiple times. Our results also show the potential and the limitations of detecting ciliate MRO proteins using single-cell transcriptomes and improve the understanding of the multiple transitions from mitochondria to MROs within ciliates.</p><p><strong>Supplementary information: </strong>The online version contains supplementary material available at 10.1007/s42995-022-00147-w.</p>","PeriodicalId":53218,"journal":{"name":"Marine Life Science & Technology","volume":"4 4","pages":"609-623"},"PeriodicalIF":5.8,"publicationDate":"2022-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10077286/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9378199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ontogenesis and systematic position of a new hypotrichous ciliate, Chaetospira sinica sp. nov., with an improved diagnosis of the poorly defined family Chaetospiridae Jankowski, 1985 (Protozoa, Ciliophora, Hypotrichia). 一种新的次毛纤毛虫,中国毛螺旋体的个体发生和系统位置,以及对定义不明确的毛螺旋体科Jankowski的改进诊断,1985(原生动物,纤毛虫,次毛虫)。
IF 5.8 2区 生物学
Marine Life Science & Technology Pub Date : 2022-11-18 eCollection Date: 2022-11-01 DOI: 10.1007/s42995-022-00146-x
Wenya Song, Xiaotian Luo, Yong Chi, Saleh A Al-Farraj, Chen Shao
{"title":"Ontogenesis and systematic position of a new hypotrichous ciliate, <i>Chaetospira sinica</i> sp. nov., with an improved diagnosis of the poorly defined family Chaetospiridae Jankowski, 1985 (Protozoa, Ciliophora, Hypotrichia).","authors":"Wenya Song, Xiaotian Luo, Yong Chi, Saleh A Al-Farraj, Chen Shao","doi":"10.1007/s42995-022-00146-x","DOIUrl":"10.1007/s42995-022-00146-x","url":null,"abstract":"<p><p>Ciliates are unique single-celled organisms that play important roles in ecological, environmental, evolutionary, and ontogenetic research. In the present study, phylogenetic analyses based on 18S rRNA gene sequence data reveal that <i>Chaetospira sinica</i> sp. nov. clusters with <i>Stichotricha aculeata</i> with strong to full support (97% ML, 1.00 BI), but is not closely related to members of Spirofilidae Gelei, 1929 to which <i>Chaetospira</i> and <i>Stichotricha</i> have previously been assigned. Phylogenetic analyses, together with morphological and morphogenetic data from <i>Chaetospira sinica</i> sp. nov., support the validity of family Chaetospiridae Jankowski, 1985. <i>Chaetospira</i> and <i>Stichotricha</i> are here assigned to the family Chaetospiridae, the improved diagnosis of which is as follows: non-dorsomarginalian Hypotrichia with flask-shaped body; oral region extending along narrow anterior neck region; lorica usually present; two ventral and two marginal cirral rows, all distinctly spiraled or obliquely curved; pretransverse and transverse cirri absent. The basic morphogenetic features in <i>C. sinica</i> sp. nov. can be summarized as: (1) the oral primordium for the opisthe develops de novo and the parental adoral zone is completely retained by the proter; (2) all ventral cirral anlagen and marginal anlagen developed intrakinetally; (3) three dorsal kineties anlagen formed intrakinetally in each daughter cell; and (4) macronuclear nodules fuse into a single mass. Exconjugant cells were also isolated and their morphologic and molecular data are provided.</p>","PeriodicalId":53218,"journal":{"name":"Marine Life Science & Technology","volume":"4 4","pages":"513-526"},"PeriodicalIF":5.8,"publicationDate":"2022-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10077230/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9384462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mapping the potential for offshore aquaculture of salmonids in the Yellow Sea. 绘制黄海鲑鱼近海养殖潜力图。
IF 5.8 2区 生物学
Marine Life Science & Technology Pub Date : 2022-08-18 eCollection Date: 2022-08-01 DOI: 10.1007/s42995-022-00141-2
Shuang-En Yu, Shuang-Lin Dong, Zhi-Xin Zhang, Yu-Yang Zhang, Gianluca Sarà, Jie Wang, Yun-Wei Dong
{"title":"Mapping the potential for offshore aquaculture of salmonids in the Yellow Sea.","authors":"Shuang-En Yu, Shuang-Lin Dong, Zhi-Xin Zhang, Yu-Yang Zhang, Gianluca Sarà, Jie Wang, Yun-Wei Dong","doi":"10.1007/s42995-022-00141-2","DOIUrl":"10.1007/s42995-022-00141-2","url":null,"abstract":"<p><p>Mariculture has been one of the fastest-growing global food production sectors over the past three decades. With the congestion of space and deterioration of the environment in coastal regions, offshore aquaculture has gained increasing attention. Atlantic salmon (<i>Salmo salar</i>) and rainbow trout (<i>Oncorhynchus mykiss</i>) are two important aquaculture species and contribute to 6.1% of world aquaculture production of finfish. In the present study, we established species distribution models (SDMs) to identify the potential areas for offshore aquaculture of these two cold-water fish species considering the mesoscale spatio-temporal thermal heterogeneity of the Yellow Sea. The values of the area under the curve (AUC) and the true skill statistic (TSS) showed good model performance. The suitability index (SI), which was used in this study to quantitatively assess potential offshore aquaculture sites, was highly dynamic at the surface water layer. However, high SI values occurred throughout the year at deeper water layers. The potential aquaculture areas for <i>S. salar</i> and <i>O. mykiss</i> in the Yellow Sea were estimated as 52,270 ± 3275 (95% confidence interval, CI) and 146,831 ± 15,023 km<sup>2</sup>, respectively. Our results highlighted the use of SDMs in identifying potential aquaculture areas based on environmental variables. Considering the thermal heterogeneity of the environment, this study suggested that offshore aquaculture for Atlantic salmon and rainbow trout was feasible in the Yellow Sea by adopting new technologies (e.g., sinking cages into deep water) to avoid damage from high temperatures in summer.</p><p><strong>Supplementary information: </strong>The online version contains supplementary material available at 10.1007/s42995-022-00141-2.</p>","PeriodicalId":53218,"journal":{"name":"Marine Life Science & Technology","volume":"4 3","pages":"329-342"},"PeriodicalIF":5.8,"publicationDate":"2022-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10077287/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9384052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Metabolic strategy of macrophages under homeostasis or immune stress in Drosophila. 果蝇在平衡或免疫压力下的巨噬细胞代谢策略
IF 5.8 2区 生物学
Marine Life Science & Technology Pub Date : 2022-08-16 eCollection Date: 2022-08-01 DOI: 10.1007/s42995-022-00134-1
Wang Luo, Sumin Liu, Fang Zhang, Long Zhao, Ying Su
{"title":"Metabolic strategy of macrophages under homeostasis or immune stress in <i>Drosophila</i>.","authors":"Wang Luo, Sumin Liu, Fang Zhang, Long Zhao, Ying Su","doi":"10.1007/s42995-022-00134-1","DOIUrl":"10.1007/s42995-022-00134-1","url":null,"abstract":"<p><p>Macrophages are well known for their phagocytic functions in innate immunity across species. In mammals, they rapidly consume a large amount of energy by shifting their metabolism from mitochondrial oxidative phosphorylation toward aerobic glycolysis, to perform the effective bactericidal function upon infection. Meanwhile, they strive for sufficient energy resources by restricting systemic metabolism. In contrast, under nutrient deprivation, the macrophage population is down-regulated to save energy for survival. <i>Drosophila melanogaster</i> possesses a highly conserved and comparatively simple innate immune system. Intriguingly, recent studies have shown that <i>Drosophila</i> plasmatocytes, the macrophage-like blood cells, adopt comparable metabolic remodeling and signaling pathways to achieve energy reassignment when challenged by pathogens, indicating the conservation of such metabolic strategies between insects and mammals. Here, focusing on <i>Drosophila</i> macrophages (plasmatocytes), we review recent advances regarding their comprehensive roles in local or systemic metabolism under homeostasis or stress, emphasizing macrophages as critical players in the crosstalk between the immune system and organic metabolism from a <i>Drosophila</i> perspective.</p>","PeriodicalId":53218,"journal":{"name":"Marine Life Science & Technology","volume":"4 3","pages":"291-302"},"PeriodicalIF":5.8,"publicationDate":"2022-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10077226/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10298670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Making comparable measurements of bacterial respiration and production in the subtropical coastal waters. 在亚热带沿海水域进行细菌呼吸和生产的可比测量。
IF 5.7 2区 生物学
Marine Life Science & Technology Pub Date : 2022-08-01 DOI: 10.1007/s42995-022-00133-2
Cui Guo, Ying Ke, Bingzhang Chen, Shuwen Zhang, Hongbin Liu
{"title":"Making comparable measurements of bacterial respiration and production in the subtropical coastal waters.","authors":"Cui Guo,&nbsp;Ying Ke,&nbsp;Bingzhang Chen,&nbsp;Shuwen Zhang,&nbsp;Hongbin Liu","doi":"10.1007/s42995-022-00133-2","DOIUrl":"https://doi.org/10.1007/s42995-022-00133-2","url":null,"abstract":"<p><p>Accurate estimates of bacterial carbon metabolic rates are indispensable for understanding the regulation of carbon fluxes in aquatic environments. Here, changes in bacterial growth, production, and cell volume in both pre-filtered and unfiltered seawater during 24 h incubation were monitored. The methodological artifacts during Winkler bacterial respiration (BR) measurements in subtropical Hong Kong coastal waters were assessed. Bacterial abundance increased by 3- and 1.8-fold in the pre-filtered and unfiltered seawater after incubation, respectively. Bacterial production (BP) and cell volume also showed significant enhancement. Compared with the BR measurements obtained by the Winkler method, the instantaneous free-living BR measurements, after correction, decreased by ~ 70%. The time-integrated free-living BR and BP during 24 h incubation in the pre-filtered sample provided an improved estimate of bacterial growth efficiency, which increased by ~ 52% compared to the common estimations using the noncomparable measurements of integrated free-living BR and instantaneous total BP. The overestimation of BR also exaggerated the contribution of bacteria to community respiration, affecting the understanding on the metabolic state of the marine ecosystems. Furthermore, the BR estimates by the Winkler method may be more biased in environments with a higher bacterial growth rate and tightly coupled grazing mortality, as well as in those with higher nutrient concentrations. These results reveal obvious problems associated with the BR methodology and raise a warning for caution when comparing BP and BR, as well as when making estimations of carbon flow through the complex microbial networks in aquatic ecosystems.</p><p><strong>Supplementary information: </strong>The online version contains supplementary material available at 10.1007/s42995-022-00133-2.</p>","PeriodicalId":53218,"journal":{"name":"Marine Life Science & Technology","volume":"4 3","pages":"414-427"},"PeriodicalIF":5.7,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10077172/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9384054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Fine-mapping and association analysis of candidate genes for papilla number in sea cucumber, Apostichopus japonicus. Apostichopus japonicus海参乳头数量候选基因精细定位及关联分析。
IF 5.7 2区 生物学
Marine Life Science & Technology Pub Date : 2022-08-01 DOI: 10.1007/s42995-022-00139-w
Xinghai Zhu, Ping Ni, Marc Sturrock, Yangfan Wang, Jun Ding, Yaqing Chang, Jingjie Hu, Zhenmin Bao
{"title":"Fine-mapping and association analysis of candidate genes for papilla number in sea cucumber, <i>Apostichopus japonicus</i>.","authors":"Xinghai Zhu,&nbsp;Ping Ni,&nbsp;Marc Sturrock,&nbsp;Yangfan Wang,&nbsp;Jun Ding,&nbsp;Yaqing Chang,&nbsp;Jingjie Hu,&nbsp;Zhenmin Bao","doi":"10.1007/s42995-022-00139-w","DOIUrl":"https://doi.org/10.1007/s42995-022-00139-w","url":null,"abstract":"<p><p>The papilla number is one of the most economically important traits of sea cucumber in the China marketing trade. However, the genetic basis for papilla number diversity in holothurians is still scarce. In the present study, we conducted genome-wide association studies (GWAS) for the trait papilla number of sea cucumbers utilizing a set of 400,186 high-quality SNPs derived from 200 sea cucumbers. Two significant trait-associated SNPs that passed Bonferroni correction (<i>P</i> < 1.25E-7) were located in the intergenic region near <i>PATS1</i> and the genic region of <i>EIF4G</i>, which were reported to play a pivotal role in cell growth and proliferation. The fine-mapping regions around the top two lead SNPs provided precise causative loci/genes related to papilla formation and cellular activity, including <i>PPP2R3C</i>, <i>GBP1</i>, and <i>BCAS3</i>. Potential SNPs with <i>P</i> < 1E-4 were acquired for the following GO and KEGG enrichment analysis. Moreover, the two lead SNPs were verified in another population of sea cucumber, and the expressive detection of three potential candidate genes <i>PATS1</i>, <i>PPP2R3C</i>, and <i>EIF4G</i> that near or cover the two lead SNPs was conducted in papilla tissue of TG (Top papilla number group) and BG (Bottom papilla number group) by qRT-PCR. We found the significantly higher expression profile of <i>PATS1</i> (3.34-fold), <i>PPP2R3C</i> (4.90-fold), and <i>EIF4G</i> (4.23-fold) in TG, implying their potential function in papilla polymorphism. The present results provide valuable information to decipher the phenotype differences of the papilla trait and will provide a scientific basis for selective breeding in sea cucumbers.</p><p><strong>Supplementary information: </strong>The online version contains supplementary material available at 10.1007/s42995-022-00139-w.</p>","PeriodicalId":53218,"journal":{"name":"Marine Life Science & Technology","volume":"4 3","pages":"343-355"},"PeriodicalIF":5.7,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10077181/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9440208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Timing and characteristics of nuclear events during conjugation and genomic exclusion in Paramecium multimicronucleatum. 多微核草履虫偶联和基因组排除过程中核事件的时间和特征。
IF 5.7 2区 生物学
Marine Life Science & Technology Pub Date : 2022-08-01 DOI: 10.1007/s42995-022-00137-y
Xue Zhang, Xiaoteng Lu, Yong Chi, Yaohan Jiang, Chundi Wang, Saleh A Al-Farraj, Adriana Vallesi, Feng Gao
{"title":"Timing and characteristics of nuclear events during conjugation and genomic exclusion in <i>Paramecium multimicronucleatum</i>.","authors":"Xue Zhang,&nbsp;Xiaoteng Lu,&nbsp;Yong Chi,&nbsp;Yaohan Jiang,&nbsp;Chundi Wang,&nbsp;Saleh A Al-Farraj,&nbsp;Adriana Vallesi,&nbsp;Feng Gao","doi":"10.1007/s42995-022-00137-y","DOIUrl":"https://doi.org/10.1007/s42995-022-00137-y","url":null,"abstract":"<p><p>Ciliated protists are ideal material for studying the origin and evolution of sex, because of their nuclear dimorphism (containing both germline micronucleus and somatic macronucleus in the same cytoplasm), special sexual processes (conjugation and autogamy), and high diversity of mating-type systems. However, the study of sexual process is limited to only a few species, due to the difficulties in inducing or observing conjugation. In the present study, we investigate the conjugation process in <i>Paramecium multimicronucleatum</i>: (1) of the three prezygotic divisions, all micronuclei undergo the first two divisions (meiosis I, II), while a variable number of nuclei undergo the third division (mitosis); (2) the synkaryon divides three times after fertilization, giving rise to eight products that differentiate into four macronuclear anlagen and four micronuclei; (3) cells restore the vegetative stage after two successive cell fissions during which the macronuclear anlagen are distributed into daughter cells without division, while micronuclei divide mitotically; (4) the parental macronucleus begins to fragment following the first meiotic division and finally degenerates completely; (5) the entire process takes about 110 h, of which about 85 h are required for macronuclear development. In addition, we describe for the first time the process of genomic exclusion occurring between amicronucleate and micronucleate cells of <i>P. multimicronucleatum</i>, during which the micronucleate cell contributes a pronucleus to the amicronucleate cell, resulting in both exconjugants being homozygotes. These results provide new insights into the diversity of sexual processes and lay an important cytological basis for future in-depth studies of mating systems in ciliates.</p>","PeriodicalId":53218,"journal":{"name":"Marine Life Science & Technology","volume":"4 3","pages":"317-328"},"PeriodicalIF":5.7,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10077201/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9440210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
Cluster of differentiation antigens: essential roles in the identification of teleost fish T lymphocytes. 分化抗原簇:在硬骨鱼T淋巴细胞鉴定中的重要作用。
IF 5.7 2区 生物学
Marine Life Science & Technology Pub Date : 2022-08-01 DOI: 10.1007/s42995-022-00136-z
Hong-Fei Tian, Jing Xing, Xiao-Qian Tang, Heng Chi, Xiu-Zhen Sheng, Wen-Bin Zhan
{"title":"Cluster of differentiation antigens: essential roles in the identification of teleost fish T lymphocytes.","authors":"Hong-Fei Tian,&nbsp;Jing Xing,&nbsp;Xiao-Qian Tang,&nbsp;Heng Chi,&nbsp;Xiu-Zhen Sheng,&nbsp;Wen-Bin Zhan","doi":"10.1007/s42995-022-00136-z","DOIUrl":"https://doi.org/10.1007/s42995-022-00136-z","url":null,"abstract":"<p><p>Cluster of differentiation (CD) antigens are cell surface molecules expressed on leukocytes and other cells associated with the immune system. Antibodies that react with CD antigens are known to be one of the most essential tools for identifying leukocyte subpopulations. T lymphocytes, as an important population of leukocytes, play essential roles in the adaptive immune system. Many of the CD antigens expressed on T lymphocytes are used as surface markers for T lymphocyte classification, including CD3, CD4 and CD8 molecules. In this review, we summarize the recent advances in the identification of CD molecules on T lymphocytes in teleosts, with emphasis on the functions of CD markers in the classification of T lymphocyte subsets. We notice that genes encoding CD3, co-receptors CD4 and CD8 have been cloned in several fish species and antibodies have been developed to study protein expression in morphological and functional contexts. T lymphocytes can be divided into CD4<sup>+</sup> and CD8<sup>+</sup> cells discriminated by the expression of CD4 and CD8 molecules in teleost, which are functionally similar to mammalian helper T cells (Th) and cytotoxic T cells (Tc), respectively. Further studies are still needed on the particular characteristics of teleost T cell repertoires and adaptive responses, and results will facilitate the health management and development of vaccines for fish.</p>","PeriodicalId":53218,"journal":{"name":"Marine Life Science & Technology","volume":"4 3","pages":"303-316"},"PeriodicalIF":5.7,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10077257/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9440211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
Efficient production of mannosylerythritol lipids by a marine yeast Moesziomyces aphidis XM01 and their application as self-assembly nanomicelles. 海洋酵母蚜虫Moesziomyces aphidis XM01高效生产甘露糖赤藓糖醇脂及其自组装纳米胶束的应用。
IF 5.7 2区 生物学
Marine Life Science & Technology Pub Date : 2022-08-01 DOI: 10.1007/s42995-022-00135-0
Guanshuo Yu, Xiaoxiang Wang, Chao Zhang, Zhe Chi, Zhenming Chi, Guanglei Liu
{"title":"Efficient production of mannosylerythritol lipids by a marine yeast <i>Moesziomyces aphidis</i> XM01 and their application as self-assembly nanomicelles.","authors":"Guanshuo Yu,&nbsp;Xiaoxiang Wang,&nbsp;Chao Zhang,&nbsp;Zhe Chi,&nbsp;Zhenming Chi,&nbsp;Guanglei Liu","doi":"10.1007/s42995-022-00135-0","DOIUrl":"https://doi.org/10.1007/s42995-022-00135-0","url":null,"abstract":"<p><p>Mannosylerythritol lipids (MELs) are one of the most promising biosurfactants because of their excellent physicochemical properties, high environmental compatibility, and various biological functions. In this study, a mangrove yeast strain <i>Moesziomyces aphidis</i> XM01 was identified and used for efficient extracellular MEL production. The MEL titer reached 64.5 ± 0.7 g/L at flask level within 7 days with the optimized nitrogen and carbon source of 2.0 g/L NaNO<sub>3</sub> and 70 g/L soybean oil. Furthermore, during a 10-L two-stage fed-batch fermentation, the final MEL titer reached 113.6 ± 3.1 g/L within 8 days, with prominent productivity and yield of 14.2 g·L<sup>-1</sup>·day<sup>-1</sup> and 94.6 g/g<sub>(glucose and soybean oil)</sub>. Structural analysis indicated that the produced MELs were mainly MEL-A and its fatty acid profile was composed of only medium-chain fatty acids (C8-C12), especially C10 acids (77.81%). Further applications of this compound were evaluated as one-step self-assembly nanomicelles. The obtained MEL nanomicelles showed good physicochemical stability and antibacterial activity. In addition, using clarithromycin as a model hydrophobic drug, the MEL nanomicelles exhibited high loading capacity and could be used for the controlled and sustained drug release in low-pH environments. Therefore, <i>M. aphidis</i> XM01 is an excellent candidate for efficient MEL production, and the prepared MEL nanomicelles have broad application prospects in the pharmaceutical and cosmetic fields.</p><p><strong>Supplementary information: </strong>The online version contains supplementary material available at 10.1007/s42995-022-00135-0.</p>","PeriodicalId":53218,"journal":{"name":"Marine Life Science & Technology","volume":"4 3","pages":"373-383"},"PeriodicalIF":5.7,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10077156/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9440207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Chemical and biological diversity of new natural products from marine sponges: a review (2009-2018). 海洋海绵新天然产品的化学和生物多样性:综述(2009-2018 年)。
IF 5.8 2区 生物学
Marine Life Science & Technology Pub Date : 2022-08-01 DOI: 10.1007/s42995-022-00132-3
Li-Li Hong, Ya-Fang Ding, Wei Zhang, Hou-Wen Lin
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