NcSWP8, a New Spore Wall Protein, Interacts with Polar Tube Proteins in the Parasitic Microsporidia

Overview

Journal Microorganisms

Date 2025 Jan 25

PMID 39858910

Authors

Pengfei Wang

Dufu Li

Qianmin Hai

Siming Liu

Yueyue Zhang

Jun Zhang

Jinshan Xu

Zhengang Ma

Zeyang Zhou

Affiliations

Soon will be listed here.

Abstract

is a pathogen that affects and Fabricius, capable of spreading within and between honeybee colonies. The spore wall of microsporidia is the initial structure to contact the host cell directly, which may play a crucial role in the infection process. Currently, several spore wall proteins have been identified in microsporidia, but only two spore wall proteins from have been characterized. Here, we report the expression and identification of a novel spore wall protein, NcSWP8, with a molecular mass of 21.37 kDa in . Subcellular localization analysis revealed that NcSWP8 was localized on the spore wall of . Co-immunoprecipitation and Far-Western blotting experiments demonstrated that NcSWP8 could stably interact with polar tube proteins, NcPTP2 and NcPTP3. The antibody blocking assay significantly decreased their infection rate, indicating that NcSWP8 played a significant role in the process of infection. These results together suggested that NcSWP8 was a new spore wall protein localized to the spore wall and interacted with the polar tube proteins, playing a crucial role in supporting the formation of the spore wall and potentially affecting the process of infection of .

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