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Establishment and characterization of an immortalized human chondrocyte cell line. 2020

Jiashu Yang, and Yuting Tang, and Wensun Chen, and Ming Zhang, and Fangling Hong, and Dawei Yang, and Qianyi Bao, and Ying Yang, and Yucui Jin, and Lingyun Li, and Changyan Ma
Jiangsu Key Laboratory of Xenotransplantation, Nanjing Medical University, 101 Longmian Road, Nanjing, 211166, People's Republic of China.

OBJECTIVE Following a specific number of mitotic divisions, primary chondrocytes undergo proliferative senescence, thwarting efforts to expand sufficient populations in vitro suitable to meet the needs of scientific research or medical therapies. Therefore, the human telomerase reverse transcriptase (TERT) was used to immortalize human chondrocyte and establish a cell line that escape from cellular senescence. RESULTS The human chondrocytes were successfully immortalized by ectopic stable expression of TERT. The established TERT-Chondrocyte cell line showed robust proliferation capacity, even in late passages up to P20, and displayed little cellular senescence. Moreover, TERT-Chondrocyte cells at 20th passage showed similar chondrocyte properties to normal chondrocytes at early passages. CONCLUSIONS Ectopic stable expression of TERT is an effective way to immortalized human chondrocyte. The immortalized chondrocytes displayed little cellular senescence, showed promise as an in vitro model to investigate osteoarthritis, and may be a promising resource for cell-based therapy for damaged cartilage.

UI MeSH Term Description Entries
D010003 Osteoarthritis A progressive, degenerative joint disease, the most common form of arthritis, especially in older persons. The disease is thought to result not from the aging process but from biochemical changes and biomechanical stresses affecting articular cartilage. In the foreign literature it is often called osteoarthrosis deformans. Arthritis, Degenerative,Osteoarthrosis,Osteoarthrosis Deformans,Arthroses,Arthrosis,Arthritides, Degenerative,Degenerative Arthritides,Degenerative Arthritis,Osteoarthritides,Osteoarthroses
D002460 Cell Line Established cell cultures that have the potential to propagate indefinitely. Cell Lines,Line, Cell,Lines, Cell
D002478 Cells, Cultured Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others. Cultured Cells,Cell, Cultured,Cultured Cell
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D014162 Transfection The uptake of naked or purified DNA by CELLS, usually meaning the process as it occurs in eukaryotic cells. It is analogous to bacterial transformation (TRANSFORMATION, BACTERIAL) and both are routinely employed in GENE TRANSFER TECHNIQUES. Transfections
D016922 Cellular Senescence Process by which cells irreversibly stop dividing and enter a state of permanent growth arrest without undergoing CELL DEATH. Senescence can be induced by DNA DAMAGE or other cellular stresses, such as OXIDATIVE STRESS. Aging, Cell,Cell Aging,Cell Senescence,Replicative Senescence,Senescence, Cellular,Senescence, Replicative,Cell Ageing,Cellular Ageing,Cellular Aging,Ageing, Cell,Ageing, Cellular,Aging, Cellular,Senescence, Cell
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
D018929 Cell Culture Techniques Methods for maintaining or growing CELLS in vitro. Cell Culture,Cell Culture Technique,Cell Cultures,Culture Technique, Cell,Culture Techniques, Cell
D019098 Telomerase An essential ribonucleoprotein reverse transcriptase that adds telomeric DNA to the ends of eukaryotic CHROMOSOMES. Telomerase Catalytic Subunit,Telomerase Reverse Transcriptase,Telomerase Reverse Transcriptase Catalytic Subunit,Catalytic Subunit, Telomerase,Reverse Transcriptase, Telomerase,Subunit, Telomerase Catalytic,Transcriptase, Telomerase Reverse
D019902 Chondrocytes Polymorphic cells that form cartilage. Chondroblasts,Chondroblast,Chondrocyte

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