How Certain Pathways Can Stop Cancer Cell Growth
Author Information
Author(s): Perks C M, Gill Z P, Newcomb P V, Holly J M P
Primary Institution: Division of Surgery, Department of Hospital Medicine, Bristol Royal Infirmary, Bristol, BS2 8HW, UK
Hypothesis
Can activation of integrin and ceramide signalling pathways inhibit the mitogenic effect of insulin-like growth factor I (IGF-I) in human breast cancer cell lines?
Conclusion
Activating integrin and ceramide signalling pathways can inhibit the growth of breast cancer cells stimulated by IGF-I.
Supporting Evidence
- IGF-I alone increased total cell number in both MCF-7 and T47D cell lines.
- C2 inhibited IGF-I-induced mitogenesis in both cell lines.
- RGD was only effective in the T47D line.
- IGF-I stimulation of cells in S-phase and cyclin A levels were unaffected despite inhibition of cell proliferation.
Takeaway
This study found that certain signals can help stop cancer cells from growing too much when they are stimulated by a growth factor.
Methodology
Cell counting, cell cycle analysis, and Western immunoblotting were used to examine the effects of ceramide and RGD peptide in breast cancer cell lines.
Digital Object Identifier (DOI)
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