Transient Skin Stretching Stimulates Immune Surveillance and Promotes Vaccine Delivery via Hair Follicles

    September 2025 in “ Cell Reports
    Faiza Benaouda, Darawan Tabtim-On, Chui Hua Lim, Mazen M. S. Aly, Renaud Leclère, Daniel Sebastia‐Saez, Mathilde Rieux-Laucat, Sara M. Nasereddin, Rikhav P. Gala, Konstantin Musiychuk, Mohamed A. Alhnan, Liang Cui, Tao Chen, Carsten Flohr, Stuart A. Jones, Élodie Segura
    TLDR Skin stretching can improve vaccine delivery through hair follicles and boost immune response.
    The study explores how transient skin stretching can enhance immune surveillance and vaccine delivery through hair follicles. It shows that skin stretching increases skin permeability and activates immune cells, leading to improved vaccine delivery without damaging the skin. This method enhances dendritic cell activity and results in stronger antibody responses compared to traditional intramuscular injections. The research suggests that mechanical stimuli can serve as a natural adjuvant for vaccines, although it also notes potential concerns about increased skin inflammation and allergen exposure. The study involved both human and mouse models, demonstrating improved delivery of a H1N1 vaccine antigen, and highlights the potential for needle-free vaccination strategies.
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