Group of bioengineering of neuromodulators and neuroreceptors

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Ekaterina Lyukmanova

Mammalian three-finger proteins protect against cancer (2018-11-30)

The human secreted protein SLURP-1, which is expressed in epithelial cells and controls their proliferation and migration, has been found to inhibit the growth of epithelial cancer cells.

The effect of SLURP-1 on cancer cells is characterized by a positive feedback: exogenous (recombinant) SLURP-1 binds to α7 nicotinic acetylcholine receptors on the cell membrane and triggers a cascade of signals that activates secretion of endogenous SLURP-1 from intracellular depot, quickly increasing its concentration in the intercellular space and enhancing antiproliferative action.

Concentrations of SLURP-1, which suppress the growth of cancer cells, do not affect the growth of normal cells.