In the activation of HPV-specific human B cells HPV-VLP vaccines mimic membrane-associated antigens.

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Tác giả: Munir Akkaya, Joseph Brzostowski, Nicolas Çuburu, Brian L P Dizon, Denise A Galloway, Rachel George, Kihyuck Kwak, Evan C Mutic, Susan K Pierce, John T Schiller, Haewon Sohn, Cynthia D Thompson, Charles Torgbor, Maria Traver, Esin Bayrali Ulker

Ngôn ngữ: eng

Ký hiệu phân loại: 598.338 *Lari

Thông tin xuất bản: United States : Proceedings of the National Academy of Sciences of the United States of America , 2025

Mô tả vật lý:

Bộ sưu tập: NCBI

ID: 692567

B cell responses to membrane-presented antigens appear to be strongly favored over soluble antigens in vivo suggesting that vaccines that mimic membrane-presented antigens may be highly efficacious. We recently demonstrated that human B cell responses to membrane-associated but not to soluble antigens in vitro depended on the expression and activity of the plasma membrane mechanosensitive ion channel, Piezo1. Here, we provide evidence that the efficacy of the current human papillomavirus virus-like particle (HPV VLP) vaccines may be due in part to their inherent ability to mimic Piezo1-dependent membrane presentation of antigens to B cells. We compared HPV-specific human B cell responses to HPV VLPs versus soluble HPV pentameric capsomeres and showed that although both induced calcium responses, only HPV VLP-induced responses were blocked by Piezo1 inhibitors. The kinetics of internalization of HPV-VLP and capsomeres into HPV-specific B cells were similar and neither required Piezo1 function as shown by small interfering RNA (siRNA)-mediated knockdown of Piezo. However, trafficking of HPV-VLPs into intracellular major histocompatibility complex (MHC) class II, lysosomal associated membrane protein 1 (LAMP1)
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