Exploratory experiment designed to discover new patterns targeting GJA1 in human bone marrow-derived MSCs and immortalized human chondrocytes. Primary outcome: increased mitochondrial transfer with Cx43 overexpression
This experiment examined the effects of overexpressing full-length connexin 43 (GJA1) and its truncated isoform GJA1-20k on mitochondrial transfer from MSCs to chondrocytes. MSCs were transduced with lentiviral vectors to overexpress either GJA1 or GJA1-20k, then co-cultured with chondrocytes. Mitochondrial transfer was quantified using flow cytometry. The study found that Cx43 overexpression significantly increased mitochondrial transfer, with GJA1-20k expression being highly correlated with the incidence of mitochondrial transfer. This experiment demonstrated that both isoforms of Cx43 can enhance mitochondrial transfer, with GJA1-20k being particularly effective.
Lentiviral transduction of MSCs to overexpress GJA1 or GJA1-20k, co-culture with chondrocytes, flow cytometry quantification
Enhanced mitochondrial transfer with increased Cx43 expression
Significant increase in mitochondrial transfer compared to control
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