April Yu Tsai; Jun Yuh Tsai - Assistant professor
April Yu Tsai; Jun Yuh Tsai Assistant professor 繁體中文 English
Full-time teacher
Biomedical Technology
04-22840416 #402/403

Immunology. Medical Microbiology. Microbial Pathogenesis. Zoonosis. 

Education

Graduate from 

Major in

Degree

Period

University of California, Davis

Microbiology

Ph.D.

2021

National Chung Hsing University

Biotechnology

M.S.

2012

National Chung Hsing University

Plant Pathology

B.S.

2010

Experience / Honor

Institution Department/Unit Position/Title Period
National Chung Hsing University Graduate Institute of Microbiology and Public Health Postdoctoral Researcher 2021–2023
United States Department of Agriculture (USDA) National Institute of Food and Agriculture Pre-doctoral Project Principal Investigator 2019–2021
University of California, Irvine (UC Irvine) Biosafety Level 3 (BSL-3) Facility Trainee and Trainer 2015–2021

Research

1. Pathogen–Host Interactions

Our research team investigates how bacterial pathogens manipulate the host innate immune system to promote their survival and pathogenesis. We focus on Listeria monocytogenes, a major foodborne pathogen that poses a severe health risk to vulnerable populations such as children, the elderly, and immunocompromised individuals. Infections in these groups often lead to life-threatening conditions. Moreover, Listeria infection during pregnancy is associated with adverse outcomes, including miscarriage, stillbirth, and neonatal infection.

Our studies aim to elucidate the molecular mechanisms underlying Listeria infection during pregnancy, with a particular emphasis on its interactions with host cells. By dissecting the strategies used by Listeria to deploy virulence factors, evade immune defenses, and disrupt placental function, we seek to advance our understanding of host-pathogen dynamics and placenta-associated pathologies.


2. Environmental Pollutant–Host Interactions

The extensive global production of plastics has resulted in the pervasive presence of micro- and nanoplastic particles, now recognized as a significant source of environmental contamination. Emerging evidence indicates that these particles can accumulate in human tissues and exert cytotoxic effects, raising concerns about their impact on reproductive health.

Our research focuses on the role of plastic particle exposure in pregnancy complications, specifically investigating how these particles compromise placental function and contribute to adverse pregnancy outcomes. Using a multidisciplinary approach that integrates in vitro cell models, animal studies, and analysis of human placental tissues, we aim to unravel the molecular mechanisms by which plastic particles impair placental immune regulation and barrier integrity. Ultimately, this research seeks to enhance public awareness of the health risks posed by plastic pollution and inform strategies to mitigate plastic-related reproductive hazards.

Lab Member

Current Members:

·       呂信祥: M.S. Year 2, Life Sciences (Listeria—antimicrobial formulations)

·       張雯婷: M.S. Year 1, Life Sciences (Microplastics—placental susceptibility)

·       吳承叡: B.S. Year 4, Life Sciences (Listeria—investigating the roles of effectors in placental infection)

·       陳珮綸: B.S. Year 3, Plant Pathology (Listeria LLO—antimicrobial peptide activity; Microplastics—placental susceptibility)

·       黃瀅綺: B.S. Year 3, Life Sciences (Microplastics—kidney cell susceptibility)

·       謝旻真: B.S. Year 3, Biotechnology (Listeria—cloning)

·       范姜哲洋: B.S. Year 2, Life Sciences (learning and growing!)

Former Members:

·       劉弘逸: Department of Life Sciences

·       施韋辰: Department of Life Sciences

·       黃靖茹: Department of Biotechnology

Journal Article

 
Tsai RS, Tsai JY*, Chung YT, Tseng CY, Liao GR, Albrecht RA, Kuan CY, Kuo RL, Ou SC, Hsu WL. A naturally occurring NS1 variant with effector domain deletion gains growth advantages in influenza virus infection. 2025. Emerging Microbes & Infections. Vol. 14
Liu YC, Liao GR, Tsai AY, Kuan CY, Tseng CY, Tsai RS, Albrecht RA, Kuo RL, Cheng IC, Liang WT, Ou SC, Hsu WL. NS2 is a key determinant of compatibility in reassortant avian influenza virus with heterologous H7N9 derived NS segment. 2022. Virus Research. Vol. 324
Tsai AY*, Byndloss MX, Seyffert N, Winter MG, Young BM, Tsolis RM. Tumor necrosis factor alpha (TNF-α) contributes to inflammatory pathology in the placenta during Brucella abortus infection. 2022. Infection and Immunity. Vol. 90
Tsai AY, English BC, Tsolis RM. Hostile takeover: hijacking of endoplasmic reticulum function by T4SS and T3SS effectors creates a niche for intracellular pathogens. 2019. Microbiology Spectrum. Vol. 7
Byndloss MX, Tsai AY*, Miller CN, Young BM, Seyffert N, Kerrinnes T, de Jong MF, Winter MG, Walker GT, Celli J, Tsolis RM. Brucella abortus infection of placental trophoblasts triggers ER stress-mediated cell death and fetal loss via T4SS-dependent activation of CHOP. 2019. mBio. Vol. 10
Chen IH, Tsai AY, Huang YP, Wu IF, Cheng SF, Hsu YH, Tsai CH. Nuclear-encoded plastidal carbonic anhydrase is involved in replication of Bamboo mosaic virus RNA in Nicotiana benthamiana. 2017. Frontiers in Microbiology. Vol. 8
Keestra-Gounder AM, Byndloss MX, Seyffert N, Young BM, Chávez-Arroyo A, Tsai AY, Cevallos SA, Winter MG, Pham OH, Tiffany CR, de Jong MF, Kerrinnes T, Ravindran R, Luciw PA, McSorley SJ, Bäumler AJ, Tsolis RM. NOD1 and NOD2 signalling links ER stress with inflammation. 2016. Nature. Vol. 532