Frontiers of Science Seminar: Gilles van Wezel and Jacques Neefjes


3.11.2022 klo 12.00 - 13.00
Frontiers of Science Seminar

November 3rd at 12:00
on-site event
Presidentti auditorium, BioCity

Prof. Gilles van Wezel, Leiden University, Netherlands
Ecology-inspired approaches towards antibiotic discovery in Actinobacteria
Prof. Jacques Neefjes, Leiden University Medical Center, Netherlands
Detoxifying anthracycline anti-cancer drugs for new treatment options of relapsed cancer patients
Host: Mikko Metsä-Ketelä (

Coffee and sandwich served at 11:45

Six students and early-career postdocs are welcome to have a lunch in restaurant Mauno and discuss with Profs. van Wezel and Neefjes after the seminar. This is a great possibility to learn hosting skills in friendly environment and create connections for future. Every student are welcome to join, in spite of which research group they belong to. BioCity Turku will offer the lunch. If you got interested, please send an email to

The lab of Gilles van Wezel primarily focuses on the actinomycetes, which are multicellular mycelial bacteria that produce two-third of all known antibiotics and many other molecules with medical application. Aim is to go beyond the known horizons and provide novel insights into the regulatory pathways that control growth, development and antibiotic production of the actinomycetes, and to understand how cells cooperate and differentiate within multicellular systems. This knowledge finds its application in lead discovery and innovative technologies for growth and screening of industrial producer strains.

Research by Neefjes and his laboratory has centred on three major themes that connect to various NWA agenda points:
1. Antigen presentation by Class I and II MHC: MHC molecules are fundamental mediators of adaptive immunity, class I MHC governs recognition of virus-infected and tumor cells by the immune system, while class II MHC instigates anti-bacterial responses and helps CTL activation.
2. Bacterial infections and cancer: Neefjes expanded his work on endosomes to the phagosome, various pathogenic bacteria proliferate inside the host. Upon fusion of phagosomes with lysosomes, bacteria become degraded and presented to the immune system. Neefjes showed that bacteria, such as Salmonella and M. tuberculosis, activate host kinase AKT1, which prevents fusion and bacterial destruction.
3. Anthracyclines and the efficacy/side-effect puzzle: When testing chemical modulations of MHC antigen presentation, Neefjes explored one of the most used frequently used classes of anti-cancer drugs—the anthracyclines—which were long thought to act by generating DNA double stranded breaks. This ‘dogma’ failed to explain dramatic variation in clinical outcomes between structurally different anthracyclines. In a breakthrough study, Neefjes showed that some anthracyclines, can also generate chromatin damage by ejecting histones from DNA.

General information
• You can download all autumn 2022 FoS-seminars as .ics in your calendar from here:
• Registration is not needed for on-site seminars
• Participation list is circulated in the audience
• If you are a student and later wish to get a certificate of attendance from the Frontier of Science seminars, please print out this seminar diary and after the seminar ask the BioCity coordinator to sign it
• Please note that any audio or video recording of the seminars is strictly forbidden.