• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
StemBase
StemBase

... Sections ...
Feb 21 Bacteria, DNA Technology, and Cell Communication
Feb 21 Bacteria, DNA Technology, and Cell Communication

... Local communication-gap junctions plasmodesmata, cell-cell recognistion Local signaling- paracrine, synaptic (secreting cell target cell) Long distance communication in the body hormonal signaling Signal transduction- reception, transduction, response Steroid hormones G-protein-linked plasma membr ...
MS Word worksheet
MS Word worksheet

... draw a mammalian blastocyst and explain how in differs from the blastula of the above animals (label the inner cell mass and trophoblast) ...
fsu neuroscience program - Florida State University
fsu neuroscience program - Florida State University

... "Mouse cloning and embryonic stem cells." Dr. Mombaerts applies gene-targeting technology to address basic questions in olfaction (sense of smell), axon guidance, regulation of olfactory receptor gene expression and olfactory perception. Investigations include the role of olfactory receptor molecule ...
Topic 2
Topic 2

... It is hypothesized there is an autosomally produced 'blocking factor' that binds to an X chromosome after fertilization and prevents its inactivation. Potentially, the blocking factor may affect the selection of which X chromosome at an early cell stage or perhaps at a later stage. The later the sta ...
Mechanisms of Animal Growth and Development
Mechanisms of Animal Growth and Development

... biology of development and in the last advance in knowalage and investigations in this area. Taken in account priviously knowalages from courses of Cell biology, Histology and ebryology and Genetics this course takes into consideration of specific machansams of development and morphogenesis of anima ...
DNA TECHNOLOGY - Mount Mansfield Union High School
DNA TECHNOLOGY - Mount Mansfield Union High School

... cells without destroying the actual embryo.1 ...
Reproduction and Genetics Vocabulary
Reproduction and Genetics Vocabulary

... (often bacteria) grows twice its size and splits in two, with DNA in each half ...
4Fertilization, cell proliferation and differentiation
4Fertilization, cell proliferation and differentiation

... become specialized and distinct from other groups of cells •  Change in cell’s size, shape, membrane potential, metabolic activity, responsiveness to signals •  Differentiation occurs at various stage of development but mostly after fertilization ...
PDF
PDF

... pole progenitors, whereas FGF promotes their proliferation and smooth muscle cell differentiation but inhibits myocardial differentiation. These and other results indicate that myocardial differentiation of the SHF progenitors requires BMP signalling and downregulation of the FGF/ERK pathway and sug ...
Mitosis and Cell Differentiation
Mitosis and Cell Differentiation

... Before a cell divides, what does it need to do? ...
Mitosis and Asexual Reproduction
Mitosis and Asexual Reproduction

... Eukaryotic: a domain of organisms having cells each with a distinct nucleus within which the genetic material is contained along with other membrane-bound organelles. Prokaryotic: any organism having cells in each of which the genetic material is in a single DNA chain, not enclosed in a nucleus. The ...
Whole Genome Scale DNA Methylation Differences in
Whole Genome Scale DNA Methylation Differences in

... amount is limited; 3) a development programme to collect thymus and obtain DNA/RNA from it. Methods: In an initial study we generated genome-wide DNA methylation profiles (EWAS) using Illumina 27K arrays of purified CD14+ monocytes (an immune effector cell type relevant to T1D pathogenesis) from 15 ...
“Science will soon create the perfect human
“Science will soon create the perfect human

... potential to replace any cell in the human body. They’ve found in embryos and fetuses. Since these cells have the ability to become any cell, scientists can manipulate them into a cell they need. For instance, if a person is dying from kidney failure, essentially stem cells could be used to grow a n ...
Honors Biology
Honors Biology

... 6. Explain the steps of mRNA processing and how it can result in different proteins. 7. Describe the relationship between control of gene expression and cell differentiation or specialization. 8. Describe the way that steroid hormones such as estrogen and testosterone act as transcription activators ...
HERE
HERE

... First steps in studying should include making a “crib”-style sheet(s) summarizing all we learned in the unit. Then, refer to any quizzes we did. Lastly, try these questions below. 1. a) Can you label the parts of the microscope and describe the function of each part? b) What magnifications are possi ...
Study Guide: Chapter 10
Study Guide: Chapter 10

... 1. Why are cells small, rather than large? a. b. 2. When an organism “grows” what is happening to the cells? 3. Why do cells divide? a. b. 4. Are the cells in an adult human the same size as an infant? Explain. 5. True or false? Volume increases more rapidly than surface area, causing the surface ar ...
Development
Development

... – can be cultured in an undifferentiated state – appropriate treatment causes differentiation • therapeutic cloning would produce replacement tissues from stem cell cultures – nuclear transfer would produce compatible stem cell cultures ...
Identifying Epigenetic Factors in Hepatocyte Differentiation to
Identifying Epigenetic Factors in Hepatocyte Differentiation to

... modulating chromatin structure and influence the presence of transcriptional factors. • Note: histone proteins have an n-terminal amino-acid tail that undergoes epigenetic modifications. The nterminal determines the state of the chromatin • Figure 5.1 Histone Modification ...
PowerPoint 簡報
PowerPoint 簡報

... allow the stem cell size to be regulated by factors that control the self-renewing or differentiation….mammals ie. HSC : Haemopoietic Stem Cell murine ...
Ellie Degen
Ellie Degen

... Are results were largely inconclusive due to difficulties with the dot blot protocol. It is possible our DNA was not binding to the membrane, or that the antibodies were not effective indicators of DNA methylation/hydroxymethylation. ...
DNA methylation
DNA methylation

... • Transcription factors Oct4 and Nanog promoters are associated with activating marks such as acetylation of H3 and H4 and H3K4me3 in ES cells. • Adult hippocampal-derived NSCs differentiate predominantly into neurons, at the expense of astrocytes and oligodendrocytes, when treated by the antiepilep ...
Supplementary information about the five
Supplementary information about the five

... positive and negative feedback of gene x1 , the five-gene model showed three behaviors: (i) fixed-point attractor with high expression of pluripotent genes (FP), (ii) fixed-point attractor with high expression of differentiation genes (FD), and (iii) the oscillatory state (O). The five-gene model als ...
“The 79th of Stem Cell Biology and Regenerative Medicine Forum”
“The 79th of Stem Cell Biology and Regenerative Medicine Forum”

... Treatment of almost congenital skeletal diseases (SKDs) is not established although these patients have a fatal course and/or live with a severe physical handicap. Patients with severe hypophosphatasia (HPP), one of the critical SKDs caused by homozygous mutations of the tissue-nonspecific alkaline ...
Hypothesis: Variations in the rate of DNA replication determine the
Hypothesis: Variations in the rate of DNA replication determine the

... The existence of two identical chromosomes within the same cell in which genes and higher order structures compete for limited resources is a symmetrybreaking situation previously proposed to lead to differentiation. Recent experiments are consistent with an intimate relationship between metabolism ...
< 1 ... 161 162 163 164 165 166 167 168 169 ... 174 >

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.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report