Canadian Sciences Speakers Network

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Haissi Cui: Profile Photo

Haissi Cui

Toronto, Ontario

Position: Assistant Professor

Organization: University of Toronto

I’m a biochemist by training, but my research has taken me into different areas of chemistry and biology. Curiosity fuels much of what I do and I enjoy learning new methods. Aminoacyl-tRNA synthetases make me happy. I was born in Asia, grew up in Europe, and am now working in North America – I strongly believe in the importance of diversity and in supporting accessibility to scientific research through outreach.

Areas of Expertise:

+ RNA processes in mammalian cells
+ Rare genetic disorders
+ Chemical tools

Language(s):

+ English
+ German


My Work

What I do:

My group and I explore RNA processes in mammalian cells using chemical tools, gene editing, and disease models. Generally, our research falls into three areas: 1) We make fluorescent small molecules and RNAs to track and visualize aminoacylation of tRNAs in cells, 2) we use gene editing to access cell and mouse models of rare disorders (specifcally, neurodevelopmental disorders) caused by mutations in aminoacyl-tRNA synthetases and the splicing factor SRRM2, and 3) we explore new RNA therapy strategies.

Ask me about:

One of the questions that drives a lot of our research is how subcellular localization influences RNA processes. Specifically, we often wonder, how tRNAs and aminoacyl-tRNA synthetases are trafficked as localized mRNA translation is such a central process. Does every ribosome have access to the same tRNA pool? What are the consequences if key proteins carry mutations? I was born in China, grew up in Germany, moved to the US for a postdoc, and now live in Canada – I have been an immigrant in every country I lived in, basically all my life. I very strongly believe that different viewpoints, experiences, and strengths add up to amazing science!

Why me:

As chemists, we like to build new tools and find new applications for existing tools!

Fun facts:

I live with two orange cats


About Me

Sector: Academia (Post Secondary)

English proficiency: Read, Write, Speak

Other Language(s): German

Pronouns: She/Her/Hers

Gender: Cisgender Female

Demographic: East Asian


Recent Publications

Title Year
Oxidation-Controlled, Strain-Promoted Tellurophene-Alkyne Cycloaddition (OSTAC): A Bioorthogonal Tellurophene-Dependent Conjugation Reaction2024
AARS Online: A collaborative database on the structure, function, and evolution of the aminoacyl‐tRNA synthetases2024
POS1199 CXCL12 AS A NOVEL REGULATOR OF PATHOLOGICAL BONE FORMATION IN ANKYLOSING SPONDYLITIS: INSIGHTS AND THERAPEUTIC POTENTIAL2024
Seryl-tRNA synthetase promotes translational readthrough by mRNA binding and involvement of the selenocysteine incorporation machinery2023
Nuclear translocation of an aminoacyl-tRNA synthetase may mediate a chronic “integrated stress response”2023
Arg-tRNA synthetase links inflammatory metabolism to RNA splicing and nuclear trafficking via SRRM22023
Cytoplasmic isoleucyl tRNA synthetase as an attractive multistage antimalarial drug target2023
The Landscape of Aminoacyl-tRNA Synthetases Involved in Severe Acute Respiratory Syndrome Coronavirus 2 Infection2022
Regulation of ex-translational activities is the primary function of the multi-tRNA synthetase complex2020
Multi-Omics Database Analysis of Aminoacyl-tRNA Synthetases in Cancer2020
Structural and functional analysis of cystatin E reveals enzymologically relevant dimer and amyloid fibril states2018
Structural Elucidation of a Nonpeptidic Inhibitor Specific for the Human Immunoproteasome2017
Tunable Probes with Direct Fluorescence Signals for the Constitutive and Immunoproteasome2016
Regulierbare Sonden mit direktem Fluoreszenzsignal für das konstitutive und das Immunoproteasom2016
Die Rolle von TIMP-1 in der tumorfördernden Stressantwort in Tumorzelle und Wirt2016
Selektive Hemmung des Immunproteasoms durch strukturbasierte Wahl eines nichtkatalytischen Cysteins als Angriffspunkt2015
Selective Inhibition of the Immunoproteasome by Structure‐Based Targeting of a Non‐catalytic Cysteine2015
Targeted Delivery of Proteasome Inhibitors to Somatostatin‐Receptor‐Expressing Cancer Cells by Octreotide Conjugation2015
TIMP-1 signaling via CD63 triggers granulopoiesis and neutrophilia in mice2015
Tetraspanin CD63 acts as a pro‐metastatic factor via β‐catenin stabilization2014
Tissue inhibitor of metalloproteinases-1 induces a pro-tumourigenic increase of miR-210 in lung adenocarcinoma cells and their exosomes2014
Selektive Inhibition des Immunoproteasoms durch ligandeninduzierte Vernetzung des katalytischen Zentrums2014
Selective Inhibition of the Immunoproteasome by Ligand‐Induced Crosslinking of the Active Site2014
Tissue inhibitor of metalloproteinases (TIMP)‐1 creates a premetastatic niche in the liver through SDF‐1/CXCR4‐dependent neutrophil recruitment in mice2014
Ein systematischer Vergleich peptidischer Proteasominhibitoren unterstreicht α‐Ketoamid als vielversprechende elektrophile Leitstruktur2014