Expression of mouse 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase-3 mRNA alternative splice variants in hypoxia
Mykhalchenko, V.G.; Minchenko, D.O.; Tsuchihara, K.; Moenner, M.; Komisarenko, S.V.; Bikfalvi, A.; Esumi, H.; Minchenko, O.H.
Ukrains'kyi Biokhimichnyi Zhurnal 80(1): 19-25
2008
ISSN/ISBN: 0372-3909 PMID: 18710022 Document Number: 620347
Expression of 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase-3 (PFKFB-3) mRNA alternative splice variants was studied in different mouse tissues in hypoxic conditions in vivo. Significant increase of the expression of PFKFB-3 mRNA was observed in the mouse lungs, testes and brain in hypoxia. Several new alternative splice variants of PFKFB-3 mRNA were identified in the lung, testis, brain and skeletal muscle. They have different length and amino acid sequence of C-terminal regulatory part. However, 6-phosphofructo-2-kinase and fructose-2,6-bisphosphatase catalytic domains were identical. Moreover, the expression of different alternative splice variants of PFKFB-3 mRNA has shown tissue specificity and different levels of induction in hypoxic conditions in vivo. Results of this investigation indicate a possible role of PFKFB-3 splice isoform in cell adaptation to hypoxic conditions.