Here, we present a protocol to significantly reduce the mitochondrial DNA copy numbers in a bovine oocyte (P < 0.0001). This method utilizes centrifugation and bisection to substantially reduce oocyte mitochondria and may allow for an increased chance of development in the reconstructed interspecies somatic cell nuclear transfer embryos.
Adams, L., Liu, Y., Durrant, B., Ruggeri, E., Young, C., Krisher, R., Polejaeva, I. Use of Bisection to Reduce Mitochondrial DNA in the Bovine Oocyte. J. Vis. Exp. (185), e64060, doi:10.3791/64060 (2022).