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Activation of the PI3K/Akt/mTOR/p70S6K1 signaling cascade in peripheral blood mononuclear cells. Association with insulin and insulin-like growth factor levels in the blood of cancer patients and diabetes

Vatseba T.S., Sokolova L.K., Pushkarev V.V., Kovzun O.I., Guda B.B., Pushkarev V.M., Tronko M.D.


SUMMARY. The aim of the work was to determine the content of insulin and insulin-like growth factor (IGF-1) in the blood in association with the activity of the end units of the P≤3K/Akt/mTORC1/p70S6K cascade in peripheral blood mononuclear cells (PMBC) of patients with type 2 diabetes (T2D) and cancer. The level of insulin and IGF-1 in the blood and the phosphorylation of Akt (Ser473), p70S6K (Thr389) in PMBC were studied by enzyme immunoassay in the following groups: 1 Ц control
group Ц healthy people, representative by age; 2 Ц patients with T2D; 3 Ц cancer patients; 4 Ц cancer patients with T2D. It was shown that in the blood of patients with T2D, as well as T2D and cancer (group 4), the level of insulin is markedly increased. The IGF-1 content is significantly higher in cancer patients. Akt and p70S6K phosphorylation increases in cancer patients which indicates the activation of these protein kinases. The mechanisms linking Akt and p70S6K activation in PMBC with insulin and IGF-1 level in the blood of patients with cancer and diabetes are discussed.

Key words: peripheral blood mononuclear cells, Akt, p70S6K, insulin, insulin-like growth factor, type 2 diabetes, cancer

Tsitologiya i Genetika 2019, vol. 53, no. 6, pp. 64-70

E-mail: pushkarev.vm

Vatseba T.S., Sokolova L.K., Pushkarev V.V., Kovzun O.I., Guda B.B., Pushkarev V.M., Tronko M.D. Activation of the PI3K/Akt/mTOR/p70S6K1 signaling cascade in peripheral blood mononuclear cells. Association with insulin and insulin-like growth factor levels in the blood of cancer patients and diabetes, Tsitol Genet., 2019, vol. 53, no. 6, pp. 64-70.

In "Cytology and Genetics":
T. S. Vatseba, L. K. Sokolova, V. V. Pushkarev, O. I. Kovzun, B. B. Guda, V. M. Pushkarev, M. D. Tronko Activation of the PI3K/Akt/mTOR/p70S6K1 Signaling Cascade in the Mononuclear Cells of Peripheral Blood: Association with Insulin and Insulin-Like Growth Factor Levels in the Blood of Patients with Cancer and Diabetes, Cytol Genet., 2019, vol. 53, no. 6, pp. 489Ц493
DOI: 10.3103/S0095452719060112


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