Kai Kretzschmar, Ph.D.
Adult Stem Cell Niches in Cancer
Junior Group Leader at MSNZ Würzburg, Germany
ACADEMIC POSITIONS & EDUCATION
MSNZ, University Hospital Würzburg (DE)
Junior Group Leader, Since January 2020
Adult stem cells–the cells that maintain and regenerate the tissues in our body–reside in a specialised microenvironment termed the stem cell niche. While stem cell niches are tissue-specific, two cellular components–fibroblasts and immune cells–have surfaced as prominent niche members across the body. Stem cells take cues from their microenvironment to control smooth transition between several plastic states, which are critical to maintain tissue homoeostasis and to regenerate in response to injury. Conversely, in diseases such as cancer, aberrant (stem) cells can acquire the ability to remodel their microenvironment allowing for the progression of disease.
My lab aims to decipher the crosstalk between stem/tumour cells and their microenvironment using the epithelia of the head and neck region as model system. To unravel the fundamental mechanisms underlying tissue homeostasis and tumourigenesis, we apply organoid technology, immune/stromal cell–organoid co-cultures, 3D whole-mount imaging and advanced transcriptomics and use both mouse models and patient material. It is our ultimate goal to exploit this communication to improve therapeutic treatments of head and neck cancer patients.
Hubrecht Institute, Utrecht (NL)
Postdoctoral Fellow, June 2014 - DecemBer 2019
I established tools to model the tumour microenvironment in colorectal cancer in vitro using epithelial organoid cultures in the laboratory of Professor Hans C. Clevers. I further studied epidermal stem cells and the regenerative capacity of the adult heart. I was supported by a VENI grant from the Netherlands Organisation of Scientific Research/NWO and long-term fellows of the Human Frontier Science Program/HFSP and the European Molecular Biology Organisation (EMBO).
Activities & Outreach: Hubrecht Institute Postdoc Committee & Career Development Committee
University of Cambridge (UK)
Doctor of Philosophy (Ph.D.) in Genetics, May 2014
I studied epidermal stem cells and the interaction with their mesenchymal niche during homeostasis of adult skin under supervision of Professor Fiona M. Watt at her laboratories at the Cambridge Stem Cell Institute and KCL's Centre for Stem Cells & Regenerative Medicine.
Activities & Outreach: Cambridge Science Festival, Wolfson Research Day, Open Academy Davos
Goethe University Frankfurt am Main (Germany)
Degree (Diplom) in Biology, November 2009
I did my final research project (Diplomarbeit) in Cell and Developmental Biology investigating gap junctional communication in skin.
Activities & Outreach: Students' Parliament, Biology Students’ Council, Open Academy Davos
AWARDS, GRANTS & FELLOWSHIPS
November 2022
Selected member of the Early Career Editorial Board (ECEB) of Stem Cell Reports
December 2021
European Research Council (ERC) 2021 Starting Grant
February 2019
Grant to establish a Junior Research Group at the MSNZ Würzburg funded by the German Cancer Aid
September 2018
Young Investigator Award of the Fondation Leducq – Transatlantic Network of Excellence on Arrhythmogenic Cardiomyopathy
June 2018
International Society for Stem Cell Research (ISSCR) travel award
September 2017
Cardiovascular Research Netherlands (CVON)-HUSTCARE young talent program research grant
June 2016-May 2018
VENI grant from the Netherlands Organisation for Scientific Research (NWO)
June 2015-December 2019
Human Frontier Science Program (HFSP) long-term fellowship (non-stipendiary fellow: June 2016-May 2018)
April 2015-December 2016
European Molecular Biology Organization (EMBO) long-term fellowship (non-stipendiary fellow: June 2015-December 2016)
March 2015
Nikon Young Scientist of the German Society for Cell Biology (DGZ)
June/July 2014
Else Kröner Fresensius Foundation (EKFS) young scientist fellowship for the 64th Lindau Nobel Laureate Meeting
June 2013
British Society for Cell Biology (BSCB) travel award
June 2013
Wolfson College Cambridge travel award
June 2012
International Society for Stem Cell Research (ISSCR) travel award
February 2012
American Association for the Advancement of Science (AAAS)/Science Program for Excellence in Science award
January 2010-December 2013
Medical Research Council (MRC) UK Four-Year Ph.D. scholarship
September 2007-August 2008
Erasmus scholarship for exchange studies abroad
SELECTED PUBLICATIONS
Please check PubMed for a complete and updated list of publications.
Development of Plasmodium falciparum liver-stages in hepatocytes derived from human fetal liver organoid cultures.
NatURE CommunICATIONS. 2023 Aug 2;14(1):4631. doi: 10.1038/s41467-023-40298-7.
Yang ASP*, Dutta D*, Kretzschmar K*, Hendriks D*, Puschhof J, Hu H, Boonekamp KE, van Waardenburg Y, Chuva de Sousa Lopes SM, van Gemert GJ, de Wilt JHW, Bousema T, Clevers H & Sauerwein RW. (* = shared first authors)
Uncovering the mode of action of engineered T cells in patient cancer organoids.
NatURE BiotechnolOGY. 2023 Jan;41(1):60-69. doi: 10.1038/s41587-022-01397-w.
Dekkers JF, Alieva M, Cleven A, Keramati F, Wezenaar AKL, van Vliet EJ, Puschhof J, Brazda P, Johanna I, Meringa AD, Rebel HG, Buchholz MB, Barrera Román M, Zeeman AL, de Blank S, Fasci D, Geurts MH, Cornel AM, Driehuis E, Millen R, Straetemans T, Nicolasen MJT, Aarts-Riemens T, Ariese HCR, Johnson HR, van Ineveld RL, Karaiskaki F, Kopper O, Bar-Ephraim YE, Kretzschmar K, Eggermont AMM, Nierkens S, Wehrens EJ, Stunnenberg HG, Clevers H, Kuball J, Sebestyen Z & Rios AC.
Single-cell derived tumor organoids display diversity in HLA class I peptide presentation.
Nature Communications. 2020 OCT;11(1):5338. doi: 10.1038/s41467-020-19142-9.
Demmers LC, Kretzschmar K, van Hoeck A, Bar-Ephraim YE, van den Toorn HWP, Koomen M, van Son G, van Gorp J, Pronk A, Smakman N, Cuppen E, Clevers H, Heck AJR & Wu W.
Long-term expansion and differentiation of adult murine epidermal stem cells in 3D organoid cultures.
Proceedings of the National Academy of Sciences of the United States of America (PNAS). 2019 JUL; 116(29):14630-14638. doi: 10.1073/pnas.1715272116.
Boonekamp KE, Kretzschmar K, Wiener DJ, Asra P, Derakhshan S, Puschhof J, López-Iglesias C, Peters PJ, Basak O & Clevers H.
Profiling proliferative cells and their progeny in damaged murine hearts.
Proceedings of the National Academy of Sciences of the United States of America (PNAS). 2018. DOI: 10.1073/pnas.1805829115.
Kretzschmar K*, Post P*, Bannier-Hélaouët M., Mattiotti A, Drost J, Basak O, Li VSW, van den Born M, Gunst QD, Versteeg D, Kooijman L, van der Elst S, van Es JH, van Rooij E, van den Hoff MJB and Clevers H. (* = shared first authors)
Wounding induces dedifferentiation of epidermal Gata6+ cells and acquisition of stem cell properties
Nature Cell Biology. 2017 Jun;19(6):603-613. doi: 10.1038/ncb3532.
Donati D, Rognoni E, Hiratsuka T, Liakath-Ali K, Hoste E, Kar G, Kayikci M, Russell R, Kretzschmar K, Mulder KW, Teichmann SA & Watt, FM.
Generation of an inducible colon-specific Cre enzyme mouse line for colon cancer research.
Proceedings of the National Academy of Sciences of the United States of America (PNAS). 2016 Oct. doi: 10.1073/pnas.1614057113.
Tetteh PW, Kretzschmar K, Begthel H, van den Born M, Korving J, Morsink F, Farin HF, van Es JH, Offerhaus GJA & Clevers H.
BLIMP1 is required for postnatal epidermal homeostasis but does not define a sebaceous gland progenitor under steady-state conditions.
Stem Cell Reports. 2014 Oct 14;3(4):620-33. doi: 10.1016/j.stemcr.2014.08.007.
Kretzschmar K, Cottle DL, Donati G, Chiang MF, Quist SR, Gollnick HP, Natsuga K, Lin KI & Watt FM.
Distinct fibroblast lineages determine dermal architecture in skin development and repair.
Nature. 2013 Dec 12;504(7479):277-81. doi: 10.1038/nature12783.
Driskell RR, Lichtenberger BM*, Hoste E*, Kretzschmar K*, Simons BD, Charalambous M, Ferron SR, Herault Y, Pavlovic G, Ferguson-Smith AC & Watt FM. (* = shared second authors)
- IMPRESSUM/CONTACT
This is a personal website that is independent from the official websites of the University Hospital Würzburg and MSNZ Würzburg.
Dr. Kai Kretzschmar
Universitätsklinikum Würzburg
IZKF/MSNZ Würzburg
Josef-Schneider-Str. 2
97080 Würzburg (Germany)+49 (0)931 31-88085
Kai Kretzschmar © 2023