Fluorescence-activated cell sorting coupled with multiplex immunofluorescent labeling for assessing age-related changes in quantity and differentiation capability of mouse muscle satellite cells
Military Medicine|更新时间:2026-01-09
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Fluorescence-activated cell sorting coupled with multiplex immunofluorescent labeling for assessing age-related changes in quantity and differentiation capability of mouse muscle satellite cells
Journal of Third Military Medical UniversityVol. 40, Issue 18, Pages: 1630-1635(2018)
作者机构:
1.401121 重庆,重庆医科大学第四临床学院康复中心
2.400038 重庆,陆军军医大学(第三军医大学)药学与检验医学系临床血液学教研室
作者简介:
基金信息:
the General Program of National Natural Science Foundation of China(31571242)
Fan BU, Dongliang XIE, Bin SHU, et al. Fluorescence-activated cell sorting coupled with multiplex immunofluorescent labeling for assessing age-related changes in quantity and differentiation capability of mouse muscle satellite cells[J]. Journal of Third Military Medical University, 2018, 40(18): 1630-1635.
DOI:
Fan BU, Dongliang XIE, Bin SHU, et al. Fluorescence-activated cell sorting coupled with multiplex immunofluorescent labeling for assessing age-related changes in quantity and differentiation capability of mouse muscle satellite cells[J]. Journal of Third Military Medical University, 2018, 40(18): 1630-1635. DOI: 10.16016/j.1000-5404.201803136.
Fluorescence-activated cell sorting coupled with multiplex immunofluorescent labeling for assessing age-related changes in quantity and differentiation capability of mouse muscle satellite cells
To isolate and count of skeletal muscle satellite cells (MSCs) in mice at different ages based on fluorescence-activated cell sorting (FACS) coupled with multiplex immunofluorescent labeling and observe the differentiation capacity of the cells.
Methods
2
The hindlimb muscles including the gastrocnemius were harvested from male C57BL mice and then cutted and digested with collagenase and dispase. The discrete cells were filtered and stained for CD45 (FITC)
CD31 (FITC)
Sca1 (PE-cy7) and α7-integrin (PE). The population of CD45
-
/CD31
-
/Sca1
-
/α7-integrin
+
cells was sorted by flow cytometry
and after characterization for expression of the myogenic molecules Pax7 and Desmin
the sorted cells were cultured and induced for myogenic differentiation. The quantity and differentiation capacity of the MSCs from young
adult and aged mice were assessed.
Results
2
The population of CD45
-
/CD31
-
/Sca1
-
/α7-integrin
+
cells
which were positive for Pax7 and Desmin
accounted for 2%~3% in the total adult discrete cells. After myogenic differentiation
the cells formed typical myotubes and expressed embryonic myosin heavy chain (eMHC). The total number of quiscent MSCs sorted and the number of quiscent MSCs per gram muscle were the largest in young mice (
P
<
0.05)
and were decreased significantly in aged mice (
P
<
0.05). The myotube fusion index and the ratio of large myotube formation were significantly reduced in the MSCs derived from aged mice(
P
<
0.05).
Conclusion
2
FACS coupled with multiplex immunofluorescent labeling allows efficient separation of mouse MSCs
which can form typical myotubes in culture. The number and differentiation capacity of quiscent MSCs in the skeletal muscles decrease significantly in aged mice.
关键词
Keywords
references
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Department of Military Cognitive Psychology, Faculty of Medical Psychology, Army Medical University (Third Military Medical University)
Sichuan Provincial Key Laboratory of Development and Regeneration, Chengdu Medical College
Department of Anatomy and Histology & Embryology, Chengdu Medical College
Department of Pathology and Pathophysiology, Chengdu Medical College
State Key Laboratory of Trauma, Burns and Combined Injury, Department of Rehabilitation Medicine, Laboratory of Trauma, Center of Bone Metabolism and Repair, Army Medical University (Third Military Medical University)