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Updated: Aug 3, 2026

Therapeutic Gene Delivery and Transfection in Human Pancreatic Cancer Cells using Epidermal Growth Factor Receptor-targeted Gelatin Nanoparticles
08:35

Therapeutic Gene Delivery and Transfection in Human Pancreatic Cancer Cells using Epidermal Growth Factor Receptor-targeted Gelatin Nanoparticles

Published on: January 4, 2012

[The effect of epidermal growth factor and insulin on the specific binding of transforming growth factor beta by

S I Sushel'nitskiĭ, R S Stoĭka, S I Kusen'

    Tsitologiia
    |January 1, 1991
    PubMed

    Insights

    Epidermal growth factor (EGF) and insulin modulate transforming growth factor beta (TGF-beta) binding sites in cells. EGF increased TGF-beta sites in lung cancer cells, while insulin increased them in kidney cells, without altering receptor affinity.

    Area of Science:

    • Cell biology
    • Molecular signaling
    • Cancer research

    Context:

    • Transforming growth factor beta (TGF-beta) plays a crucial role in cell proliferation and differentiation.
    • Epidermal growth factor (EGF) and insulin are key signaling molecules that interact with TGF-beta pathways.
    • Understanding these interactions is vital for developing targeted therapies.

    Purpose:

    • To investigate the influence of EGF and insulin on TGF-beta binding sites in different cell lines.
    • To determine the effect of these growth factors on TGF-beta receptor affinity (Kd).
    • To correlate changes in TGF-beta binding with cellular proliferative responses.

    Summary:

    • In NRK-49F cells, insulin increased TGF-beta binding sites, while a combination of EGF and insulin decreased them. EGF alone had no significant effect.
    • In A-549 lung adenocarcinoma cells, EGF significantly increased TGF-beta binding sites, whereas insulin and the EGF-insulin combination did not alter them.
    • The dissociation constant (Kd) for TGF-beta receptors remained unchanged in both cell lines under all experimental conditions.

    Impact:

    • Reveals differential regulation of TGF-beta receptor expression by EGF and insulin in distinct cellular contexts.
    • Provides insights into how growth factor crosstalk influences TGF-beta signaling.
    • Contributes to understanding the molecular mechanisms underlying cell growth and cancer progression.

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