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A critical role of the KCa 3.1 channel in mechanical stretch-induced proliferation of rat bone marrow-derived mesenchymal stem cells. 2020

Xiaoling Jia, and Hao Su, and Xinlan Chen, and Yangbi Huang, and Yufan Zheng, and Pei Ji, and Chao Gao, and Xianghui Gong, and Yan Huang, and Lin-Hua Jiang, and Yubo Fan
Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing, China.

Mechanical stimulation is an important factor regulating mesenchymal stem cell (MSC) functions such as proliferation. The Ca2+ -activated K+ channel, KCa 3.1, is critically engaged in MSC proliferation but its role in mechanical regulation of MSC proliferation remains unknown. Here, we examined the KCa 3.1 channel expression and its role in rat bone marrow-derived MSC (BMSC) proliferation in response to mechanical stretch. Application of mechanical stretch stimulated BMSC proliferation via promoting cell cycle progression. Such mechanical stimulation up-regulated the KCa 3.1 channel expression and pharmacological or genetic inhibition of the KCa 3.1 channel strongly suppressed stretch-induced increase in cell proliferation and cell cycle progression. These results support that the KCa 3.1 channel plays an important role in transducing mechanical forces to MSC proliferation. Our finding provides new mechanistic insights into how mechanical stimuli regulate MSC proliferation and also a viable bioengineering approach to improve MSC proliferation.

UI MeSH Term Description Entries
D008297 Male Males
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D013314 Stress, Mechanical A purely physical condition which exists within any material because of strain or deformation by external forces or by non-uniform thermal expansion; expressed quantitatively in units of force per unit area. Mechanical Stress,Mechanical Stresses,Stresses, Mechanical
D017207 Rats, Sprague-Dawley A strain of albino rat used widely for experimental purposes because of its calmness and ease of handling. It was developed by the Sprague-Dawley Animal Company. Holtzman Rat,Rats, Holtzman,Sprague-Dawley Rat,Rats, Sprague Dawley,Holtzman Rats,Rat, Holtzman,Rat, Sprague-Dawley,Sprague Dawley Rat,Sprague Dawley Rats,Sprague-Dawley Rats
D049109 Cell Proliferation All of the processes involved in increasing CELL NUMBER including CELL DIVISION. Cell Growth in Number,Cellular Proliferation,Cell Multiplication,Cell Number Growth,Growth, Cell Number,Multiplication, Cell,Number Growth, Cell,Proliferation, Cell,Proliferation, Cellular
D051660 Intermediate-Conductance Calcium-Activated Potassium Channels A major class of calcium-activated potassium channels that were originally discovered in ERYTHROCYTES. They are found primarily in non-excitable CELLS and set up electrical gradients for PASSIVE ION TRANSPORT. Intermediate-Conductance Calcium-Activated Potassium Channel,Potassium Channels, Intermediate-Conductance Calcium-Activated,FIK Channel,Fibroblast Intermediate Conductance Potassium Channel,IK Potassium Channels,Intermediate Conductance Calcium Activated Potassium Channel,Intermediate Conductance Calcium Activated Potassium Channels,Potassium Channels, IK,Potassium Channels, Intermediate Conductance Calcium Activated
D059630 Mesenchymal Stem Cells Mesenchymal stem cells, also referred to as multipotent stromal cells or mesenchymal stromal cells are multipotent, non-hematopoietic adult stem cells that are present in multiple tissues, including BONE MARROW; ADIPOSE TISSUE; and WHARTON JELLY. Mesenchymal stem cells can differentiate into mesodermal lineages, such as adipocytic, osteocytic and chondrocytic. Adipose Tissue-Derived Mesenchymal Stem Cell,Adipose Tissue-Derived Mesenchymal Stromal Cell,Adipose-Derived Mesenchymal Stem Cell,Bone Marrow Mesenchymal Stem Cell,Mesenchymal Stromal Cell,Mesenchymal Stromal Cells,Multipotent Bone Marrow Stromal Cell,Multipotent Mesenchymal Stromal Cell,Adipose Tissue-Derived Mesenchymal Stem Cells,Adipose Tissue-Derived Mesenchymal Stromal Cells,Adipose-Derived Mesenchymal Stem Cells,Adipose-Derived Mesenchymal Stromal Cells,Bone Marrow Mesenchymal Stem Cells,Bone Marrow Stromal Cell,Bone Marrow Stromal Cells,Bone Marrow Stromal Cells, Multipotent,Bone Marrow Stromal Stem Cells,Mesenchymal Progenitor Cell,Mesenchymal Progenitor Cells,Mesenchymal Stem Cell,Mesenchymal Stem Cells, Adipose-Derived,Mesenchymal Stromal Cells, Multipotent,Multipotent Bone Marrow Stromal Cells,Multipotent Mesenchymal Stromal Cells,Stem Cells, Mesenchymal,Wharton Jelly Cells,Wharton's Jelly Cells,Adipose Derived Mesenchymal Stem Cell,Adipose Derived Mesenchymal Stem Cells,Adipose Derived Mesenchymal Stromal Cells,Adipose Tissue Derived Mesenchymal Stem Cell,Adipose Tissue Derived Mesenchymal Stem Cells,Adipose Tissue Derived Mesenchymal Stromal Cell,Adipose Tissue Derived Mesenchymal Stromal Cells,Mesenchymal Stem Cells, Adipose Derived,Progenitor Cell, Mesenchymal,Progenitor Cells, Mesenchymal,Stem Cell, Mesenchymal,Stromal Cell, Mesenchymal,Stromal Cells, Mesenchymal,Wharton's Jelly Cell,Whartons Jelly Cells

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