scholarly journals Temperature-dependent modification of muscle precursor cell behaviour is an underlying reason for lasting effects on muscle cellularity and body growth of teleost fish

2011 ◽  
Vol 214 (11) ◽  
pp. 1791-1801 ◽  
Author(s):  
P. Steinbacher ◽  
J. Marschallinger ◽  
A. Obermayer ◽  
A. Neuhofer ◽  
A. M. Sanger ◽  
...  
Keyword(s):  
Teleost Fish ◽  
Precursor Cell ◽  
Body Growth ◽  
Temperature Dependent ◽  
Cell Behaviour ◽  
Muscle Precursor ◽  
Dependent Modification ◽  
Muscle Precursor Cell

m-Calpain implication in cell cycle during muscle precursor cell activation

2004 ◽  
Vol 298 (1) ◽  
pp. 48-57 ◽  
Author(s):  
F Raynaud ◽  
G Carnac ◽  
A Marcilhac ◽  
Y Benyamin
Keyword(s):  
Cell Cycle ◽  
Cell Activation ◽  
Precursor Cell ◽  
Muscle Precursor ◽  
Muscle Precursor Cell

EphA4/ephrin-A5 interactions in muscle precursor cell migration in the avian forelimb

Development ◽  
2001 ◽  
Vol 128 (23) ◽  
pp. 4669-4680 ◽  
Author(s):  
Mary E. Swartz ◽  
Johann Eberhart ◽  
Elena B. Pasquale ◽  
Catherine E. Krull
Keyword(s):  
Cell Migration ◽  
Precursor Cells ◽  
Precursor Cell ◽  
Specific Gene ◽  
In Ovo ◽  
Muscle Precursor ◽  
In Ovo Electroporation ◽  
Lateral Portion ◽  
Muscle Precursor Cells ◽  
Muscle Precursor Cell

Limb muscles derive from muscle precursor cells that lie initially in the lateral portion of the somitic dermomyotome and subsequently migrate to their target limb regions, where muscle-specific gene transcription is initiated. Although several molecules that control the generation and delamination of muscle precursor cells have been identified, little is known about the mechanisms that guide muscle precursor cell migration in the limb. We have examined the distribution of members of the Eph family during muscle precursor cell development. The EphA4 receptor tyrosine kinase and its ligand, ephrin-A5, are expressed by muscle precursor cells and forelimb mesoderm in unique spatiotemporal patterns during the period when muscle precursors delaminate from the dermomyotome and migrate into the limb. To test the function of EphA4/ephrin-A5 interactions in muscle precursor migration, we used targeted in ovo electroporation to express ephrin-A5 ectopically specifically in the presumptive limb mesoderm. In the presence of ectopic ephrin-A5, Pax7-positive muscle precursor cells are significantly reduced in number in the proximal limb, compared with controls, and congregate abnormally near the lateral dermomyotome. In stripe assays, isolated muscle precursor cells avoid substrate-bound ephrin-A5 and this avoidance is abolished by addition of soluble ephrin-A5. These data suggest that ephrin-A5 normally restricts migrating, EphA4-positive muscle precursor cells to their appropriate territories in the forelimb, disallowing entry into abnormal embryonic regions.

scholarly journals Age-related impairment of T cell-induced skeletal muscle precursor cell function

2011 ◽  
Vol 300 (6) ◽  
pp. C1226-C1233 ◽  
Author(s):  
Breanna R. Dumke ◽  
Simon J. Lees
Keyword(s):  
Skeletal Muscle ◽  
T Cells ◽  
T Cell ◽  
Cell Function ◽  
Critical Role ◽  
Interleukin 2 ◽  
Precursor Cell ◽  
Muscle Precursor ◽  
Age Related ◽  
Muscle Precursor Cell

Sarcopenia is the age-associated loss of skeletal muscle mass and strength. Recent evidence suggests that an age-associated loss of muscle precursor cell (MPC) functionality contributes to sarcopenia. The objectives of the present study were to examine the influence of activated T cells on MPCs and determine whether an age-related defect in this signaling occurs. MPCs were collected from the gastrocnemius and plantaris of 3-mo-old (young) and 32-mo-old (old) animals. Splenic T cells were harvested using anti-CD3 Dynabead isolation. T cells were activated for 48 h with costimulation of 100 IU/ml interleukin-2 (IL-2) and 5 μg/ml of anti-CD28. Costimulation increased 5-bromo-2′-deoxyuridine incorporation of T cells from 13.4 ± 4.6% in control to 64.8 ± 6.0% in costimulated cells. Additionally, T cell cytokines increased proliferation on MPCs isolated from young muscle by 24.0 ± 5.7%, whereas there was no effect on MPCs isolated from aged muscle. T cell cytokines were also found to be a chemoattractant. T cells were able to promote migration of MPCs isolated from young muscle; however, MPCs isolated from aged muscle did not respond to the T cell-released chemokines. Conversely, whereas T cell-released cytokines did not affect myogenesis of MPCs isolated from young animals, there was a decrease in MPCs isolated from old animals. These data suggest that T cells may play a critical role in mediating MPC function. Furthermore, aging may alter T cell-induced MPC function. These findings have implications for developing strategies aimed at increasing MPC migration and proliferation leading to an improved regenerative capacity of aged skeletal muscle.

Muscle precursor cell autografting in a murine model of urethral sphincter injury

2002 ◽  
Vol 89 (3) ◽  
pp. 298-302 ◽  
Author(s):  
R. Yiou ◽  
P. Dreyfus ◽  
D.K. Chopin ◽  
C.-C. Abbou ◽  
J.-P. Lefaucheur
Keyword(s):  
Murine Model ◽  
Precursor Cell ◽  
Urethral Sphincter ◽  
Sphincter Injury ◽  
Muscle Precursor ◽  
Muscle Precursor Cell

scholarly journals Neurogenesis-on-Chip: Electric field modulated transdifferentiation of human mesenchymal stem cell and mouse muscle precursor cell coculture

Biomaterials ◽  
2020 ◽  
Vol 226 ◽  
pp. 119522 ◽  
Author(s):  
Sharmistha Naskar ◽  
Viswanathan Kumaran ◽  
Yogananda S. Markandeya ◽  
Bhupesh Mehta ◽  
Bikramjit Basu
Keyword(s):  
Stem Cell ◽  
Mesenchymal Stem Cell ◽  
Electric Field ◽  
Human Mesenchymal Stem Cell ◽  
Precursor Cell ◽  
Mouse Muscle ◽  
Muscle Precursor ◽  
On Chip ◽  
Muscle Precursor Cell

618 Restoration of functional motor units in a rat model of sphincter injury by muscle precursor cell autografts

2004 ◽  
Vol 3 (2) ◽  
pp. 157
Author(s):  
R. Yiou ◽  
L. Zini ◽  
A. Hoznek ◽  
C. Abbou ◽  
D. Chopin ◽  
...  
Keyword(s):  
Rat Model ◽  
Motor Units ◽  
Precursor Cell ◽  
Sphincter Injury ◽  
Muscle Precursor ◽  
Muscle Precursor Cell
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