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May 28, 2026Scientia Sinica Vitae0 citationsOpen Access

A New Perspective on B Cell Antibody Responses: Revisiting the Impact of Antigen Form

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ZHZhaolin HuaBHBaidong Hou

Key Points

  • This review aims to update the understanding of B cell antibody responses by integrating recent research on antigen characteristics and immune outcomes.
  • Synthesis of recent studies on B cell responses and antigen forms
  • Analysis of the role of antigen physical characteristics in immune signaling
  • Discussion of novel vaccine formats, including polyvalent nanoparticles.
  • Antigen characteristics significantly influence BCR signaling and APC selection.
  • B cells can act as professional APCs alone or with DCs, emphasizing collaboration in T cell activation.
  • Antigen forms dictate the anatomical distribution of immune responses, affecting the diversity and magnitude of responses.

Abstract

经典体液免疫模型通常将B细胞抗体应答描述为线性过程,并以T细胞依赖性(TD)与非依赖性(TI)的二元分类为基础。然而,越来越多的证据表明,体液免疫具有高度的情境依赖性与可塑性。本综述整合近年研究进展,提出B细胞应答的更新框架。我们强调,抗原的物理分子特性(如价态、颗粒结构及先天刺激信号)是决定免疫结局的核心变量,不仅调控BCR信号强度,更主导抗原呈递细胞(APC)的选择与免疫反应的空间组织。传统观点认为树突状细胞(DC)是初始T细胞活化的唯一启动者,但新近研究表明,在特定抗原形式下,B细胞可独立或协同DC发挥专业APC功能,二者在CD4⁺ T细胞启动与滤泡辅助性T(Tfh)细胞分化中呈现冗余与协作特征。此外,TI与TD应答并非完全独立,而是由抗原信号与细胞内在状态整合决定的连续谱。抗原形式进一步塑造了免疫反应的解剖学分布:可溶性抗原多局限于引流淋巴结,而多价/颗粒抗原可系统性地激活脾脏等远端淋巴器官,扩大生发中心反应的克隆多样性与应答幅度。基于上述机制,本综述还探讨了多价纳米颗粒等新形式疫苗在诱导强效体液免疫中的优势与现存挑战。本文构建的动态、多维体液免疫框架,为理解B细胞应答的复杂性提供了新视角,并为下一代疫苗的理性设计提供了重要理论依据。

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Cite This Study

Hua et al. (2026) studied this question.

synapsesocial.com/papers/6a17dd4e3fad632b0f9d9fa7https://doi.org/10.1360/ssv-2026-0097
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