Dynamic behavior of cells within neurospheres in expanding populations of neural precursors
Identifieur interne : 002933 ( Main/Exploration ); précédent : 002932; suivant : 002934Dynamic behavior of cells within neurospheres in expanding populations of neural precursors
Auteurs : Tony Y. Wang [Canada] ; Arindom Sen [Canada] ; Leo A. Behie [Canada] ; Michael S. Kallos [Canada]Source :
- Brain research [ 0006-8993 ] ; 2006.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Cellule souche.
English descriptors
- KwdEn :
Abstract
Large-scale expansion of neural stem and progenitor cells will be essential for clinically treating the large number of patients suffering from neurodegenerative disorders such as Parkinson's disease. Other applications of neural stem cell technology include further research in areas such as neural development or drug testing. Neural stem cells can be grown in vitro as tissue aggregates known as neurospheres, and in the current study, experiments were performed to determin6e the spatial arrangement and behavior of the cells within the neurosphere structure. A protocol utilizing sulfonated lipophilic fluorescent dyes was developed to effectively label populations of neural stem and progenitor cells without compromising cell density during culture. Cells retained the labels for at least 7 days. Using the labeling protocol, we discovered that the cells within the neurospheres were mobile and, moreover, the cells on the periphery of the neurospheres could migrate into the center of the neurospheres. Most important, the mixing time of two merging neurospheres was observed to be the same order of magnitude as the neural stem cell doubling time (∼20 h). This study is the first to show that the neurosphere system is dynamic, and these results will serve as a stepping stone to more in-depth studies of the neurosphere microenvironment.
Affiliations:
Links toward previous steps (curation, corpus...)
- to stream PascalFrancis, to step Corpus: 000807
- to stream PascalFrancis, to step Curation: 000516
- to stream PascalFrancis, to step Checkpoint: 000735
- to stream Main, to step Merge: 002C33
- to stream Main, to step Curation: 002933
Le document en format XML
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Wang</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Pharmaceutical Production Research Facility (PPRF), Schulich School of Engineering, University of Calgary, 2500 University Drive N.W</s1><s2>Calgary, Alberta, T2N 1N4</s2><s3>CAN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Calgary, Alberta, T2N 1N4</wicri:noRegion><orgName type="university">Université de Calgary</orgName><placeName><settlement type="city">Calgary</settlement><region type="state">Alberta</region></placeName></affiliation></author><author><name sortKey="Sen, Arindom" sort="Sen, Arindom" uniqKey="Sen A" first="Arindom" last="Sen">Arindom Sen</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Pharmaceutical Production Research Facility (PPRF), Schulich School of Engineering, University of Calgary, 2500 University Drive N.W</s1><s2>Calgary, Alberta, T2N 1N4</s2><s3>CAN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Calgary, Alberta, T2N 1N4</wicri:noRegion><orgName type="university">Université de Calgary</orgName><placeName><settlement type="city">Calgary</settlement><region type="state">Alberta</region></placeName></affiliation></author><author><name sortKey="Behie, Leo A" sort="Behie, Leo A" uniqKey="Behie L" first="Leo A." last="Behie">Leo A. Behie</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Pharmaceutical Production Research Facility (PPRF), Schulich School of Engineering, University of Calgary, 2500 University Drive N.W</s1><s2>Calgary, Alberta, T2N 1N4</s2><s3>CAN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Calgary, Alberta, T2N 1N4</wicri:noRegion><orgName type="university">Université de Calgary</orgName><placeName><settlement type="city">Calgary</settlement><region type="state">Alberta</region></placeName></affiliation></author><author><name sortKey="Kallos, Michael S" sort="Kallos, Michael S" uniqKey="Kallos M" first="Michael S." last="Kallos">Michael S. Kallos</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Pharmaceutical Production Research Facility (PPRF), Schulich School of Engineering, University of Calgary, 2500 University Drive N.W</s1><s2>Calgary, Alberta, T2N 1N4</s2><s3>CAN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Canada</country><wicri:noRegion>Calgary, Alberta, T2N 1N4</wicri:noRegion><orgName type="university">Université de Calgary</orgName><placeName><settlement type="city">Calgary</settlement><region type="state">Alberta</region></placeName></affiliation></author></analytic><series><title level="j" type="main">Brain research</title><title level="j" type="abbreviated">Brain res.</title><idno type="ISSN">0006-8993</idno><imprint><date when="2006">2006</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Brain research</title><title level="j" type="abbreviated">Brain res.</title><idno type="ISSN">0006-8993</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Behavior</term><term>Imaging</term><term>Nervous system</term><term>Neurosphere</term><term>Precursor cell</term><term>Stem cell</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Comportement</term><term>Formation image</term><term>Cellule souche</term><term>Cellule précurseur</term><term>Système nerveux</term><term>Neurosphère</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Cellule souche</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Large-scale expansion of neural stem and progenitor cells will be essential for clinically treating the large number of patients suffering from neurodegenerative disorders such as Parkinson's disease. Other applications of neural stem cell technology include further research in areas such as neural development or drug testing. Neural stem cells can be grown in vitro as tissue aggregates known as neurospheres, and in the current study, experiments were performed to determin6e the spatial arrangement and behavior of the cells within the neurosphere structure. A protocol utilizing sulfonated lipophilic fluorescent dyes was developed to effectively label populations of neural stem and progenitor cells without compromising cell density during culture. Cells retained the labels for at least 7 days. Using the labeling protocol, we discovered that the cells within the neurospheres were mobile and, moreover, the cells on the periphery of the neurospheres could migrate into the center of the neurospheres. Most important, the mixing time of two merging neurospheres was observed to be the same order of magnitude as the neural stem cell doubling time (∼20 h). This study is the first to show that the neurosphere system is dynamic, and these results will serve as a stepping stone to more in-depth studies of the neurosphere microenvironment.</div></front></TEI><affiliations><list><country><li>Canada</li></country><region><li>Alberta</li></region><settlement><li>Calgary</li></settlement><orgName><li>Université de Calgary</li></orgName></list><tree><country name="Canada"><region name="Alberta"><name sortKey="Wang, Tony Y" sort="Wang, Tony Y" uniqKey="Wang T" first="Tony Y." last="Wang">Tony Y. Wang</name></region><name sortKey="Behie, Leo A" sort="Behie, Leo A" uniqKey="Behie L" first="Leo A." last="Behie">Leo A. Behie</name><name sortKey="Kallos, Michael S" sort="Kallos, Michael S" uniqKey="Kallos M" first="Michael S." last="Kallos">Michael S. Kallos</name><name sortKey="Sen, Arindom" sort="Sen, Arindom" uniqKey="Sen A" first="Arindom" last="Sen">Arindom Sen</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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