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. 2024:2826:15-30.
doi: 10.1007/978-1-0716-3950-4_2.

Ultrasound-Guided Fine Needle Biopsy of Human Axillary Lymph Nodes to Assess B Cell Responses to Vaccination

Alexandra Carey Hoppé  1 , Solange Obeid  2 , Brad Milner  2 , Vanessa Venturi #  1 , C Mee Ling Munier #  3
Affiliations

Ultrasound-Guided Fine Needle Biopsy of Human Axillary Lymph Nodes to Assess B Cell Responses to Vaccination

Alexandra Carey Hoppé et al. Methods Mol Biol. 2024.

Abstract

Ultrasound-guided fine needle biopsy, also known as fine needle aspiration, of human axillary lymph nodes is a safe and effective procedure to assess the immune response within the lymph nodes following vaccination. Once acquired, lymph node cells can be characterized via flow cytometric immunophenotyping and/or single-cell RNA sequencing for gene expression and T and B cell receptors. Analysis of the immune cells from the lymph nodes enables the investigation of T and B cells that may interact at this site. These interactions may lead to germinal center formation and expansion, critical for the generation of effective immunity to vaccination. Directly studying the dynamic processes and interaction of the key cells has been challenging in humans due to the anatomically protected location of these cells. Here, we describe the methods involved in ultrasound-guided fine needle biopsy of human axillary lymph nodes in response to vaccination and subsequent analyses of the B cell populations.

Keywords: B cell receptor (BCR); B cells; Fine needle aspirate (FNA); Fine needle biopsy (FNB); Human; Immune response; Lymph nodes; Vaccination.

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