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Merck
CN

Nuclear localization of aldolase A correlates with cell proliferation.

Biochimica et biophysica acta (2013-07-28)
Piotr Mamczur, Andrzej Gamian, Jerzy Kolodziej, Piotr Dziegiel, Dariusz Rakus
摘要

Muscle fructose 1,6-bisphosphate aldolase (ALDA) is a glycolytic enzyme which may localize both in nuclei and cytoplasm of cells, however its role in the nuclei is unclear. Here, we demonstrate the links between subcellular localization of ALDA and the cell cycle progression as well as the availability of energetic substrates. Results of our studies indicate that nuclear localization of ALDA correlates with the proliferative activity of the cells and with the expression of Ki-67, a marker of proliferation, both in the KLN-205 (mouse lung cancer cells) and human squamous cell lung cancer cells (hSCC). Chemically-induced block of cell cycle entry in S phase and the inhibition of transcription stimulate removal of ALDA from cells nuclei suggesting that nuclear ALDA is involved in cells proliferation. On the other hand, subcellular distribution of the enzyme also depends on the stress and pro-survival signals mediated by the Akt and the p38 pathways and, in non-proliferating cells, on the availability of glucose and lactate. The results presented here point to ALDA as a factor involved in the regulation of cells proliferation.

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Sigma-Aldrich
伴刀豆球蛋白A 来源于洋刀豆 (刀豆), Type IV-S, lyophilized powder, aseptically processed, BioReagent, suitable for cell culture
Sigma-Aldrich
伴刀豆球蛋白A 来源于洋刀豆 (刀豆), Type IV, lyophilized powder
Sigma-Aldrich
伴刀豆球蛋白A 来源于洋刀豆 (刀豆), Type VI, lyophilized powder
Sigma-Aldrich
伴刀豆球蛋白A 来源于洋刀豆 (刀豆), Type IV-S, lyophilized powder, γ-irradiated, BioReagent, suitable for cell culture
Sigma-Aldrich
放线菌素D, from Streptomyces sp., ≥95% (HPLC)
Sigma-Aldrich
醛缩酶 来源于兔肌肉, lyophilized powder, ≥8.0 units/mg protein
Sigma-Aldrich
阿非迪霉素,即用型溶液, from Nigrospora sphaerica
Sigma-Aldrich
醛缩酶 来源于兔肌肉, ammonium sulfate suspension, 10-20 units/mg protein