한빛사논문
Seokoh Moon a,#, Ki Wook Lee a,#, Myungseo Park a, Jeonghui Moon a, Sang Hee Park a, Soomin Kim a, Jaehyeon Hwang a, Jong-Won Yoon b, Seon-Min Jeon b, Jun-Seob Kim c, Young-Jun Jeon a, Dae-Hyuk Kweon a,b
aDepartment of Integrative Biotechnology, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon 16419, Republic of Korea.
bAdvanced Protein Technologies Corp., Suwon 16229, Republic of Korea
cDepartment of Nano-Bioengineering, Incheon National University, Incheon, 22012, South Korea
#Equal contribution
Correspondence : Jun-Seob Kim, Young-Jun Jeon, Dae-Hyuk Kweon
Abstract
Viral pathogens, particularly influenza and SARS-CoV-2, pose a significant global health challenge. Given the immunomodulatory properties of human milk oligosaccharides (HMOs), in particular 2′-fucosyllactose (2`-FL) and 3-fucosyllactose (3-FL), we investigated their dietary supplementation effects on antiviral responses in mouse models. This study revealed distinct immune modulations induced by 3-FL. RNA-sequencing data showed that 3-FL increased the expression of interferon receptors, such as IFNAR and IFNGR, while simultaneously downregulating interferons and interferon-stimulated genes (ISGs), an effect not observed with 2`-FL supplementation. Such modulation enhanced antiviral responses in both cell culture and animal models, while attenuating pre-emptive inflammatory responses. Nitric oxide concentrations in 3-FL-supplemented A549 cells and mouse lung tissues were elevated exclusively upon infection, reaching 5.8- and 1.9-fold increases over control groups, respectively. In addition, 3-FL promoted leukocyte infiltration into the site of infection upon viral challenge. 3-FL supplementation provided protective efficacy against lethal influenza challenge in mice. The demonstrated antiviral efficacy spanned multiple influenza strains and extended to SARS-CoV-2. In conclusion, 3-FL is a unique immunomodulator that helps protect the host from viral infection while suppressing inflammation prior to infection.
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