scholarly journals Crayfish hemocytes develop along the granular cell lineage

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Fang Li ◽  
Zaichao Zheng ◽  
Hongyu Li ◽  
Rongrong Fu ◽  
Limei Xu ◽  
...  
Keyword(s):  
Developmental Stages ◽  
Cell Lineage ◽  
Granular Cell ◽  
Marker Genes ◽  
Hematopoietic Tissue ◽  
Differentiated Cells ◽  
Stage Of Development ◽  
Almost All ◽  
Relationship Of

AbstractDespite the central role of hemocytes in crustacean immunity, the process of hemocyte differentiation and maturation remains unclear. In some decapods, it has been proposed that the two main types of hemocytes, granular cells (GCs) and semigranular cells (SGCs), differentiate along separate lineages. However, our current findings challenge this model. By tracking newly produced hemocytes and transplanted cells, we demonstrate that almost all the circulating hemocytes of crayfish belong to the GC lineage. SGCs and GCs may represent hemocytes of different developmental stages rather than two types of fully differentiated cells. Hemocyte precursors produced by progenitor cells differentiate in the hematopoietic tissue (HPT) for 3 ~ 4 days. Immature hemocytes are released from HPT in the form of SGCs and take 1 ~ 3 months to mature in the circulation. GCs represent the terminal stage of development. They can survive for as long as 2 months. The changes in the expression pattern of marker genes during GC differentiation support our conclusions. Further analysis of hemocyte phagocytosis indicates the existence of functionally different subpopulations. These findings may reshape our understanding of crustacean hematopoiesis and may lead to reconsideration of the roles and relationship of circulating hemocytes.

scholarly journals Global Dynamic Molecular Profiles of Stomatal Lineage Cell Development by Single-Cell RNA Sequencing

2020 ◽  
Author(s):  
Zhixin Liu ◽  
Yaping Zhou ◽  
Jinggong Guo ◽  
Jiaoai Li ◽  
Zixia Tian ◽  
...  
Keyword(s):  
Single Cell ◽  
Developmental Stages ◽  
Cell Lineage ◽  
Cell Development ◽  
Transcriptional Networks ◽  
Marker Genes ◽  
Variable Expression ◽  
Cell Clusters ◽  
Global Dynamic ◽  
Stomatal Lineage

ABSTRACTThe regulation of stomatal lineage cell development has been extensively investigated. However a comprehensive characterization of this biological process based on single-cell transcriptome analysis has not yet been reported. Here, we performed RNA-seq on over 12,844 individual cells from the cotyledons of five-day-old Arabidopsis seedlings. We identified 11 cell clusters corresponding mostly to cells at specific stomatal developmental stages with a series of new marker genes. Comparative analysis of genes with the highest variable expression in these cell clusters revealed three transcriptional networks that regulate the development of mesophyll and guard cells, as well as the differentiation from protodermal to guard mother cells. We investigated the developmental dynamics of marker genes via pseudo-time analysis which revealed potential interactions between them. The identification of several novel marker genes suggests new regulatory mechanisms during development of stomatal cell lineage.

scholarly journals Importance of Bcl-2-family proteins in murine hematopoietic progenitor and early B cells

2021 ◽  
Vol 12 (8) ◽  
Author(s):  
Constanze Kurschat ◽  
Arlena Metz ◽  
Susanne Kirschnek ◽  
Georg Häcker
Keyword(s):  
B Cells ◽  
Hematopoietic Cells ◽  
Cell Lineage ◽  
Main Role ◽  
Mitochondrial Apoptosis ◽  
Hematopoietic Progenitor ◽  
Regulation Of Expression ◽  
Differentiated Cells

AbstractMitochondrial apoptosis regulates survival and development of hematopoietic cells. Prominent roles of some Bcl-2-family members in this regulation have been established, for instance for pro-apoptotic Bim and anti-apoptotic Mcl-1. Additional, mostly smaller roles are known for other Bcl-2-members but it has been extremely difficult to obtain a comprehensive picture of the regulation of mitochondrial apoptosis in hematopoietic cells by Bcl-2-family proteins. We here use a system of mouse ‘conditionally immortalized’ lymphoid-primed hematopoietic progenitor (LMPP) cells that can be differentiated in vitro to pro-B cells, to analyze the importance of these proteins in cell survival. We established cells deficient in Bim, Noxa, Bim/Noxa, Bim/Puma, Bim/Bmf, Bax, Bak or Bax/Bak and use specific inhibitors of Bcl-2, Bcl-XL and Mcl-1 to assess their importance. In progenitor (LMPP) cells, we found an important role of Noxa, alone and together with Bim. Cell death induced by inhibition of Bcl-2 and Bcl-XL entirely depended on Bim and could be implemented by Bax and by Bak. Inhibition of Mcl-1 caused apoptosis that was independent of Bim but strongly depended on Noxa and was completely prevented by the absence of Bax; small amounts of anti-apoptotic proteins were co-immunoprecipitated with Bim. During differentiation to pro-B cells, substantial changes in the expression of Bcl-2-family proteins were seen, and Bcl-2, Bcl-XL and Mcl-1 were all partially in complexes with Bim. In differentiated cells, Noxa appeared to have lost all importance while the loss of Bim and Puma provided protection. The results strongly suggest that the main role of Bim in these hematopoietic cells is the neutralization of Mcl-1, identify a number of likely molecular events during the maintenance of survival and the induction of apoptosis in mouse hematopoietic progenitor cells, and provide data on the regulation of expression and importance of these proteins during differentiation along the B cell lineage.

scholarly journals Identification of Biomarkers Controlling Cell Fate In Blood Cell Development

2021 ◽  
Vol 1 ◽  
Author(s):  
Maryam Nazarieh ◽  
Marc Hoeppner ◽  
Volkhard Helms
Keyword(s):  
Blood Cell ◽  
Cell Fate ◽  
Gene Networks ◽  
Target Genes ◽  
Developmental Stages ◽  
Cell Formation ◽  
Cell Lineage ◽  
Marker Genes ◽  
Specific Marker ◽  
Regulatory Pathways

A blood cell lineage consists of several consecutive developmental stages starting from the pluri- or multipotent stem cell to a state of terminal differentiation. Despite their importance for human biology, the regulatory pathways and gene networks that govern these differentiation processes are not yet fully understood. This is in part due to challenges associated with delineating the interactions between transcription factors (TFs) and their corresponding target genes. A possible step forward in this case is provided by the increasing amount of expression data, as a basis for linking differentiation stages and gene activities. Here, we present a novel hierarchical approach to identify characteristic expression peak patterns that global regulators excert along the differentiation path of cell lineages. Based on such simple patterns, we identified cell state-specific marker genes and extracted TFs that likely drive their differentiation. Integration of the mean expression values of stage-specific “key player” genes yielded a distinct peaking pattern for each lineage that was used to identify further genes in the dataset which behave similarly. Incorporating the set of TFs that regulate these genes led to a set of stage-specific regulators that control the biological process of cell fate. As proof of concept, we considered two expression datasets covering key differentiation events in blood cell formation of mice.

scholarly journals Dedifferentiated follicular granulosa cells derived from pig ovary can transdifferentiate into osteoblasts

2012 ◽  
Vol 447 (2) ◽  
pp. 239-248 ◽  
Author(s):  
Yoshinao Oki ◽  
Hiromasa Ono ◽  
Takeharu Motohashi ◽  
Nobuki Sugiura ◽  
Hiroyuki Nobusue ◽  
...  
Keyword(s):  
Granulosa Cells ◽  
Cell Biology ◽  
Cell Lineage ◽  
Marker Genes ◽  
Specific Cell ◽  
Specific Marker ◽  
Matrix Mineralization ◽  
Differentiated Cells

Transdifferentiation is the conversion of cells from one differentiated cell type into another. How functionally differentiated cells already committed to a specific cell lineage can transdifferentiate into other cell types is a key question in cell biology and regenerative medicine. In the present study we show that porcine ovarian follicular GCs (granulosa cells) can transdifferentiate into osteoblasts in vitro and in vivo. Pure GCs isolated and cultured in Dulbecco's modified Eagle's medium supplemented with 20% FBS (fetal bovine serum) proliferated and dedifferentiated into fibroblast-like cells. We referred to these cells as DFOG (dedifferentiated follicular granulosa) cells. Microarray analysis showed that DFOG cells lost expression of GC-specific marker genes, but gained the expression of osteogenic marker genes during dedifferentiation. After osteogenic induction, DFOG cells underwent terminal osteoblast differentiation and matrix mineralization in vitro. Furthermore, when DFOG cells were transplanted subcutaneously into SCID mice, these cells formed ectopic osteoid tissue. These results indicate that DFOG cells derived from GCs can differentiate into osteoblasts in vitro and in vivo. We suggest that GCs provide a useful model for studying the mechanisms of transdifferentiation into other cell lineages in functionally differentiated cells.

Attachment Styles, Physical Proximity, and Relational Satisfaction

2014 ◽  
Vol 4 (2) ◽  
pp. 106-112
Author(s):  
Anita Shrivastava ◽  
Andrea Burianova
Keyword(s):  
Attachment Styles ◽  
Romantic Relationship ◽  
Distinct Type ◽  
Relational Satisfaction ◽  
Long Distance ◽  
Avoidant Attachment ◽  
Geographic Separation ◽  
Relationship Of ◽  
Attachment Dimensions

This study aimed to explore the relationships between attachment styles, proximity, and relational satisfaction. This was achieved by assessing a distinct type of long distance romantic relationship of flying crews, compared with proximal (non-flying crew) romantic relationships. The responses of 139 expatriate professionals revealed significant associations between proximity and anxious and avoidant attachment dimensions. The role of the avoidant dimension in comparison with that of the anxious dimension was found to be a significant predictor of relational satisfaction. This study contributes significantly toward addressing the role of proximity and attachment in relational satisfaction in a new context of geographic separation.

Michael Kelly, Hilary Footitt, Myriam Salama-Carr (eds.): The Palgrave Handbook of Languages and Conflict

2020 ◽  
Vol 55 (2) ◽  
Author(s):  
Ľubomír Zvada
Keyword(s):  
International Relations ◽  
Foreign Languages ◽  
Military Operations ◽  
Sources Of Information ◽  
War And Peace ◽  
Interdisciplinary Field ◽  
Speakers Of Other Languages ◽  
War And Conflict ◽  
Almost All

This Handbook maps the contours of an exciting and burgeoning interdisciplinary field concerned with the role of language and languages in situations of conflict. It explores conceptual approaches, sources of information that are available, and the institutions and actors that mediate language encounters. It examines case studies of the role that languages have played in specific conflicts, from colonial times through to the Middle East and Africa today. The contributors provide vibrant evidence to challenge the monolingual assumptions that have affected traditional views of war and conflict. They show that languages are woven into every aspect of the making of war and peace, and demonstrate how language shapes public policy and military strategy, setting frameworks and expectations. The Handbook's 22 chapters powerfully illustrate how the encounter between languages is integral to almost all conflicts, to every phase of military operations and to the lived experiences of those on the ground, who meet, work and fight with speakers of other languages. This comprehensive work will appeal to scholars from across the disciplines of linguistics, translation studies, history, and international relations; and provide fresh insights for a broad range of practitioners interested in understanding the role and implications of foreign languages in war.

PERSEPSI PEMAHAMAN PERANAN AUDITOR, ETIKA AUDITOR DAN INDEPENDENSI AUDITOR INTERNAL DALAM MEWUJUDKAN GOOD UNIVERSITY GOVERNANCE DENGAN GAYA KEPEMIMPINAN SEBAGAI VARIABEL MODERASI

2019 ◽  
Vol 4 (1) ◽  
pp. 474
Author(s):  
Fipitriany Any
Keyword(s):  
Leadership Style ◽  
University Governance ◽  
Primary Data ◽  
Study Program ◽  
Internal Auditor ◽  
Internal Auditors ◽  
Analysis Models ◽  
Relationship Of ◽  
Role Ethics

ABSTRACT The purpose of this study is to examine and analyze the influence of the role, ethics, and independence of internal auditors in implementing good university governance (GUG) with leadership style as a moderation variable. Multiple linear regression and moderation regression analysis models are used to test the hypothesis. The primary data are obtained through questionnaires that are distributed to the respondents, namely the dean and head of study program at the UniversitasBinaDarma and UniversitasMuhammadiyahPalembang. The results of this study indicate that the instruments in each variable proved to be valid and reliable. Based on the results of hypothesis testing, it can be seen that simultaneously the variable of role, ethics, and independence of internal auditors have positively and significantly effect in implementing good university governance (GUG). These results provide justification or endorsement of the theoretical truths used as the theoretical references of Stewardship Theory and Attitude and Behavioral Theory. Based on the partial test, role of auditor does not significantly affect the variable of GUG, but ethics and independence variable are found to be significant in influencing GUG. The leadership style is negative and insignificant in moderating the role of internal auditors and GUC and also the independence of internal auditor and GUC. The leadership style is found to be positive and insignificant in moderating the relationship of internal auditors’ ethics and GUC.Keywords        Role, Ethics, Independence, Internal Auditor, Leadership Style, Good University Governance  ABSTRAK Tujuan dari penelitian ini adalah untuk menguji dan menganalisis pengaruh peran, etika, dan independensi auditor internal dalam menerapkan good university governance (GUG) dengan gaya kepemimpinan sebagai variabel moderasi. Model analisis regresi linier berganda dan regresi moderasi digunakan untuk menguji hipotesis. Data primer diperoleh melalui kuesioner yang dibagikan kepada responden, yaitu dekan dan ketua program studi di Universitas Bina Darma dan Universitas MuhammadiyahPalembang. Hasil penelitian ini menunjukkan bahwa instrumen dalam setiap variabel terbukti valid dan dapat diandalkan. Berdasarkan hasil pengujian hipotesis dapat dilihat bahwa secara simultan variabel peran, etika, dan independensi auditor internal berpengaruh positif dan signifikan dalam penerapan good university governance (GUG). Hasil ini memberikan pembenaran atau pengesahan kebenaran teoretis yang digunakan sebagai referensi teoretis dari Teori Penatalayanan dan Teori Sikap dan Perilaku. Berdasarkan uji parsial, peran auditor tidak secara signifikan mempengaruhi variabel GUG, tetapi variabel etika dan independensi ditemukan signifikan dalam mempengaruhi GUG. Gaya kepemimpinan negatif dan tidak signifikan dalam memoderasi peran auditor internal dan GUC dan juga independensi auditor internal dan GUC. Gaya kepemimpinan ditemukan menjadi positif dan tidak signifikan dalam memoderasi hubungan etika auditor internal dan GUC Kata Kunci            Peran, Etika, Independensi, Auditor Internal, Gaya Kepemimpinan, Tata Kelola Universitas

Management of Economics and State "Bottom"

2020 ◽  
Vol 17 (6) ◽  
pp. 76-91
Author(s):  
E. D. Solozhentsev
Keyword(s):  
Quality Of Life ◽  
Artificial Intelligence ◽  
Probabilistic Models ◽  
Human Life ◽  
Special Software ◽  
Human Quality ◽  
Relationship Of ◽  
The Relationship

The scientific problem of economics “Managing the quality of human life” is formulated on the basis of artificial intelligence, algebra of logic and logical-probabilistic calculus. Managing the quality of human life is represented by managing the processes of his treatment, training and decision making. Events in these processes and the corresponding logical variables relate to the behavior of a person, other persons and infrastructure. The processes of the quality of human life are modeled, analyzed and managed with the participation of the person himself. Scenarios and structural, logical and probabilistic models of managing the quality of human life are given. Special software for quality management is described. The relationship of human quality of life and the digital economy is examined. We consider the role of public opinion in the management of the “bottom” based on the synthesis of many studies on the management of the economics and the state. The bottom management is also feedback from the top management.

On Metaphysics and the Political: A Polemics of Reading Baudelaire in the 1930s

2019 ◽  
Vol 58 (2) ◽  
pp. 249-259
Author(s):  
Joseph Acquisto
Keyword(s):  
Twentieth Century ◽  
Political Crisis ◽  
The Political ◽  
Modern Poetry ◽  
Progressive Politics ◽  
The World ◽  
Relationship Of ◽  
The Relationship ◽  
Insight Into

This essay examines a polemic between two Baudelaire critics of the 1930s, Jean Cassou and Benjamin Fondane, which centered on the relationship of poetry to progressive politics and metaphysics. I argue that a return to Baudelaire's poetry can yield insight into what seems like an impasse in Cassou and Fondane. Baudelaire provides the possibility of realigning metaphysics and politics so that poetry has the potential to become the space in which we can begin to think the two of them together, as opposed to seeing them in unresolvable tension. Or rather, the tension that Baudelaire animates between the two allows us a new way of thinking about the role of esthetics in moments of political crisis. We can in some ways see Baudelaire as responding, avant la lettre, to two of his early twentieth-century readers who correctly perceived his work as the space that breathes a new urgency into the questions of how modern poetry relates to the world from which it springs and in which it intervenes.

STEROID HORMONE METABOLISM IN RESPONSIVE TISSUES IN VITRO

1971 ◽  
Vol 68 (1_Suppl) ◽  
pp. S279-S294 ◽  
Author(s):  
Paul Robel
Keyword(s):  
Steroid Hormone ◽  
Physiological Activity ◽  
Physiological State ◽  
Target Cells ◽  
Target Tissue ◽  
Hormone Metabolism ◽  
Metabolizing Enzymes ◽  
Relationship Of

ABSTRACT Of the information available on steroid hormone metabolism in responsive tissues, only that relating hormone metabolism to physiological activity is reviewed, i. e. metabolite activity in isolated in vitro systems, binding of metabolites to target tissue receptors, specific steroid hormone metabolizing enzymes and relationship of hormone metabolism to target organ physiological state. Further, evidence is presented in the androgen field, demonstrating 5α-reduced metabolites, formed inside the target cells, as active compounds. This has led to a consideration of testosterone as a »prehormone«. The possibility that similar events take place in tissues responding to progesterone is discussed. Finally, the role of hormone metabolism in the regulation of hormone availability and/or renewal in target cells is discussed. In this context, reference is made to the potential role of plasma binding proteins and cytosol receptors.

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