Studying the Toxic Effects of Some Biologically Active Peptides on the Model of Mouse Embryonic Stem Cells

Area of Science:

• Neuroscience
• Developmental Biology
• Pharmacology

Background:

• Embryonic stem cells (ESCs) are crucial for developmental studies.
• Peptide drugs offer therapeutic potential but require safety evaluation.
• Understanding peptide effects on ESCs is vital for regenerative medicine.

Purpose of the Study:

• To investigate the impact of specific peptide drugs and pharmaceutical products on mouse ESC proliferation, survival, and neuronal differentiation.
• To assess the potential toxicity of these peptides during early developmental stages.

Main Methods:

• Mouse ESCs were treated with various peptide drugs (HLDF-6, PGP, RPGP, PGLP) and pharmaceutical products (Semax, Selank, thyroliberin) at different concentrations.
• Cell proliferation and survival rates were measured, particularly under serum deprivation.
• Differentiation into neuronal precursors and mature neurons (including GABA+ neurons) was evaluated.

Main Results:

• PGP and PGLP exhibited minor inhibitory effects on cell proliferation.
• PGP, PGLP, and Semax significantly enhanced ESC survival during serum deprivation.
• Most peptides had minimal effects on neuronal precursor formation and differentiation into mature neurons.
• Selank, thyroliberin, and NGF notably decreased the proportion of GABA+ neurons.

Conclusions:

• The studied peptide compounds do not exhibit significant toxicity to mouse ESCs during embryonic and fetal developmental periods.
• Specific peptides demonstrate potential for enhancing ESC survival, while neuronal differentiation effects vary.
• Further research is warranted to explore the therapeutic applications of these peptides in neurodevelopment and regenerative medicine.