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Features of B lymphocyte development
Features of B lymphocyte development

... - Rearrangement & expression of Ig gene in a precise order - Selection & proliferation of pre-B cells via pre-Ag receptor 2. Selection of the mature B cell repertoire - Self Ag => Affect the strength of the BCR signal - Immature B cells => self Ag/high avidity => Receptor editing => Additional L cha ...
course map example
course map example

... Discussions “Photosynthesis and Respiration Lesson Plan, Article Summary, Lab Enzymes, Photosynthesis and Respiration” ...
Representing Biological Processes in Modular Action Language ALM
Representing Biological Processes in Modular Action Language ALM

... original one. The interphase and the mitotic phase are conventionally described as sequences of sub-phases. Depending on the level of detail of the description, these sub-phases may be simple events or sequences of other sub-phases. For example, the more detailed mitotic phase is described as a sequ ...
Reduction in DNA Binding Activity of the Transcription Factor Pax
Reduction in DNA Binding Activity of the Transcription Factor Pax

... cell lineage, Pax-5 is expressed in progenitor, precursor, and mature B cells, but expression is down-regulated in plasma cells (9, 10). Pax-5 has been deleted in mice through targeted gene disruption and its absence in B cells from homozygous mutant mice results in a complete block in early B cell ...
CRISPR Applications: Mouse - Innovative Genomics Institute
CRISPR Applications: Mouse - Innovative Genomics Institute

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Keratin Alterations during Embryonic Epidermal Differentiation: A
Keratin Alterations during Embryonic Epidermal Differentiation: A

... Differentiation of the epidermis during embryonic rabbit development was found to be accompanied by dramatic changes in keratin proteins . Immunofluorescent labeling with keratin antiserum revealed that the undifferentiated epithelium of 12-d embryos was already committed to making keratin proteins ...
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Genetic and Epigenetic Regulation in Age
Genetic and Epigenetic Regulation in Age

... The most common DNA methylation form is the 5¶ methylcytosine. It occurs predominantly in the symmetric CG context. Approximately 70% to 80% of CG dinucleotides of the genome are normally methylated and are called CpG. In vertebrates, CpG dinucleotides tend to cluster together and form CpG islands. ...
WJG-23-1787
WJG-23-1787

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Fulltext PDF - Indian Academy of Sciences
Fulltext PDF - Indian Academy of Sciences

... Heritable information in plants consists of genomic information in DNA sequence and epigenetic information superimposed on DNA sequence. The latter is in the form of cytosine methylation at CG, CHG and CHH elements (where H = A, T or C) and a variety of histone modifications in nucleosomes. The epial ...
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Oral squamous cell carcinoma (OSCC) – molecular, viral and

... commonly found in human genetic material and perform the functions necessary to maintain the integrity of tissues and organs. Among other things, they control cell division and differentiation processes and also regulate their suicidal death (apoptosis). Mutated proto-oncogenes are over-expressed, a ...
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... We are interested in molecular mechanisms underlying notochord formation in chordate embryos (Satoh and Jeffery, 1995; Takahashi et al., 1999; Hotta et al., 2000; Suzuki and Satoh, 2000). The notochord of the ascidian tadpole larva is composed of 40 cells aligned longitudinally in a single row along ...
c-myc Driven by the Proto-Oncogene B Lymphocyte Commitment
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... DNA (E-boxes) to regulate their target genes (16); of all of the Myc proteins, c-Myc is probably the best studied. In humans and mice, c-Myc deregulation is well established as a primary cause of some cancers. It is estimated that the c-myc proto-oncogene is activated in 20% of all human cancers (17 ...
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... Plant Molecular Biology and Biotechnology laboratory, Australian Research Council Centre of Excellence for Integrative Legume Research, Institute of Land and Food Resources, The University of Melbourne, Parkville, Victoria 3010, Australia ...
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... delayed entry into the S phase in the subsequent cycle [8, 91. The delay also occurred when cells were prevented from adhering to the substrate [9] or were exposed to caffeine [lo]. When the proliferating cells were deprived of serum [8] or exposed to caffeine [lo] during Gl phase, they were inhibit ...
University of Groningen The evolution of bacterial cell differentiation
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Ascidian embryogenesis and the origins of the chordate body plan
Ascidian embryogenesis and the origins of the chordate body plan

... of transgcnic DNA and RNA into de\ eloping embryos. hlosaic incorporation is not ~1prohlcm in this system because of the small number of clca\~ges involved in the formation of adwnccd-stage embryos. ‘liansgenesis has been wed to characterize &rcgulatory I)NA elements that mediate tissue-specific and ...
Mbd3, a component of the NuRD co-repressor
Mbd3, a component of the NuRD co-repressor

... (Azuara et al., 2006; Boyer et al., 2006; Lee et al., 2006). Although the details of epigenetic modifications in pluripotent cells in vivo have been lacking owing to the scarcity of relevant tissue, a recent study has revealed that ICMs have more intense silencing marks than do ES cells, at in least ...
Transcriptional Deregulation of Mutated BCL6 Alleles by Loss of
Transcriptional Deregulation of Mutated BCL6 Alleles by Loss of

... diffuse large B cell lymphomas (DLBCL) and 5–14% of follicular lymphomas (FL), the BCL6 locus is altered by chromosomal translocations that deregulate its expression by a mechanism known as promoter substitution. In addition, the BCL6 5′ noncoding sequences are targeted by multiple somatic mutations ...
PDF
PDF

... (Azuara et al., 2006; Boyer et al., 2006; Lee et al., 2006). Although the details of epigenetic modifications in pluripotent cells in vivo have been lacking owing to the scarcity of relevant tissue, a recent study has revealed that ICMs have more intense silencing marks than do ES cells, at in least ...
Gold nanoparticle-mediated gene delivery induces immunity genes
Gold nanoparticle-mediated gene delivery induces immunity genes

... promising intracellular gene regulation agents. We found that gold nanoparticles stably functionalized with covalently attached oligonucleotides activate immune-related genes and pathways in human peripheral blood mononuclear cells, but not an immortalized, lineage-restricted cell line. These findin ...
PPT Slide
PPT Slide

... transfection for 24 hours, the CM was replaced with fresh media and then time-dependently collected as shown in the scheme. (B) HEK293T cells expressing WT or D148E variant APE1/Ref-1 were treated with 1 μM TSA for 1 hour. The CM was transferred into an empty plate and 0.5 mL of this CM was timedepe ...
Comparing The Effects of Small Molecules BIX
Comparing The Effects of Small Molecules BIX

... molecules offer several advantages such as rapid, reversible and dose-dependent effects, structural diversity provided by synthetic chemistry and relative ease of handling and administration compared with genetic interventions (10). Moreover, by erasure of epigenetic marks (DNA methylation and histo ...
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Epigenetics in stem-cell differentiation

Embryonic stem cells are capable of self-renewing and differentiating to the desired fate depending on its position within the body. Stem cell homeostasis is maintained through epigenetic mechanisms that are highly dynamic in regulating the chromatin structure as well as specific gene transcription programs. Epigenetics has been used to refer to changes in gene expression, which are heritable through modifications not affecting the DNA sequence.The mammalian epigenome undergoes global remodeling during early stem cell development that requires commitment of cells to be restricted to the desired lineage. There has been multiple evidence suggesting that the maintenance of the lineage commitment of stem cells are controlled by epigenetic mechanisms such as DNA methylation, histone modifications and regulation of ATP-dependent remolding of chromatin structure. Based on the histone code hypothesis, distinct covalent histone modifications can lead to functionally distinct chromatin structures that influence the fate of the cell.This regulation of chromatin through epigenetic modifications is a molecular mechanism that will determine whether the cell will continue to differentiate into the desired fate. A research study performed by Lee et al. examined the effects of epigenetic modifications on the chromatin structure and the modulation of these epigenetic markers during stem cell differentiation through in vitro differentiation of murine embryonic stem (ES) cells.
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