In conclusion, this work identifies KIAA1199 as a novel regulator of MEK/ERK-induced SC dedifferentiation and contributes to a better understanding of the molecular control of SC dedifferentiation.
By RNAi screening, we identified RSKN-1/P90(RSK) as a downstream effector of MPK-1/ERK that is critical for dedifferentiation: rskn-1 RNAi suppressed spermatocyte dedifferentiation and instead induced meiotic divisions.
This last observation led us to investigate the role of BRAF(V600E) and the MEK-ERK pathway in thyroid dedifferentiation, particularly in Na(+)/I(-) symporter (NIS) impairment, as this thyroid-specific plasma membrane glycoprotein mediates active transport of I(-) into the thyroid follicular cells.