Programmable stopped-flow injection analysis: A comparative study on the effects of adenosine and its aptamer on respiratory burst of salivary and circulatory neutrophils.

Autor: Liang X; Institute of Analytical Chemistry, Zhejiang University 310058, China. Electronic address: liang.xiaoning@zju.edu.cn., He C; Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, China; Qiantang Hospital, Hangzhou, China. Electronic address: hecm@srrsh.com., Shen H; Institute of Analytical Chemistry, Zhejiang University 310058, China. Electronic address: shzju@zju.edu.cn.
Jazyk: angličtina
Zdroj: Talanta [Talanta] 2024 May 01; Vol. 271, pp. 125672. Date of Electronic Publication: 2024 Jan 17.
DOI: 10.1016/j.talanta.2024.125672
Abstrakt: Neutrophils play a pivotal role in innate immunity by releasing ROS through respiratory bursts to neutralize various pathogenic factors. However, excessive ROS release can cause tissue damage. Adenosine is an endogenous anti-inflammatory molecule inhibiting respiratory burst to protect the host. Adenosine aptamers with antibody-like properties and good stability are expected to act as adenosine antagonists with functional modulation capability. This study compares the effects of adenosine and its aptamer on the respiratory bursts of salivary polymorphonuclear leukocytes and circulating polymorphonuclear leukocytes using a programmable stopped-flow injection approach, ensuring rapid and efficient analysis while maintaining the neutrophils' viability. The results show that primed salivary polymorphonuclear leukocytes exhibit specificities that differ from circulating polymorphonuclear leukocytes. Adenosine aptamer can function as an inhibitory antagonist that distinguishes between physiologically controlled and excessive priming of neutrophils, showing potential application prospects in immunotherapy.
Competing Interests: Declaration of competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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