 
 
       Johannes Textor 
	Associate Professor (Universitair Hoofddocent)
 
   	Johannes Textor 
	Associate Professor (Universitair Hoofddocent)
	Institute for Computing and
		Information Sciences
	Radboud University,
		Nijmegen, The Netherlands
		
    	Radboud Institute for Molecular Life Sciences,
    	Tumor Immunology department,
		Radboud University
			Medical Center,
		Nijmegen, The Netherlands
   
   
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   Contact Information
   	Radboud University:
	Mercator building
	Second floor, room 17
	Toernooiveld 212
6525 EC NIJMEGEN
	
	Radboudumc:
	Medical BioSciences
	Geert Grooteplein 26-28, 5th floor
	6525 GA Nijmegen
	The Netherlands
	
	mail: johannes.textor }at{ ru.nl 
	or: johannes.textor }at{ gmx.de
   
   Research
   
	   	I lead the Computational Immunology group
		at the Data Science section of the 
		Institute for Computing and Information Sciences
		at Radboud University and 
		the department of Tumor Immunology at the 
		Radboud Institute for Molecular Life Sciences, 
		Radboud University Medical Center (Radboudumc), Nijmegen,
		The Netherlands.
	
	
	We use simulation models (like this one),
	machine learning, and causal inference methods (like DAGs) 
	to study information processing in the adaptive immune sytem.
   
   
	Our work has two main goals. First and foremost, we want to understand how the immune system perceives
	and interacts with "abnormal" information coming from pathogens or tumors. Such knowledge 
	is useful to design immunological treatments such as vaccines or tumor immunotherapies. 
   
   
	Second, we are interested in designing immunologically inspired machine learning and information
	processing systems -- Artificial Immune Systems. We use these to understand more
	fundamentally how the immune system stores, retrieves and modifies information, and how this differs
	from the second major information-processing system in our bodies, the central nervous system. 
	Ultimately, our goal is to understand why these two marvelously complex information-processing systems
	exist in our bodies, why they are so different in their architecture, and how they complement each other.
   
   
	
	We collaborate with inspiring colleagues
	-- at the Tumor Immunology department in Nijmegen, and other researchers groups around the world -- 
	 trying our best to help them in their research
	by helping to address computational questions
	and identifying appropriate statistical methodology.
	
  
   Publications
   
Show: 
complete list |
selected publications
Author order is highlighted where it is meaningful (e.g. it is not meaningful in 
  	theoretical computer science, but it is in computational biology). If two or more 
	authors are highlighted, this means they contributed equally.
Preprints
- 
Inge MN Wortel, Jérémy Postat, Mihaela Mihaylova, Mauricio Merino, Aanya Bhagrath, Maryl Harris, Lin Wouters, Lucas Wiebke, Daniel R Parisi, Judith N Mandl, Johannes Textor:
Cooperative motility emerges in crowds of T cells but not neutrophils
 bioRxiv, 2024. doi: 10.1101/2024.10.21.618803
- 
Shabaz Sultan, Sapna Devi, Scott Mueller, 
Johannes Textor:
 A parallelized cellular Potts model that enables simulations at tissue scale.
 arXiv, 2023. doi: 10.48550/arXiv.2312.09317
2025
- 
Jeroen Creemers, Johannes Textor:
 Leveraging mathematical models to improve the statistical robustness of cancer immunotherapy trials.
 Current Opinion in Systems Biology 40, 100540, 2025. doi: 10.1016/j.coisb.2024.100540
- 
Shabaz Sultan, Mark A. J. Gorris, Lieke L. van der Woude, Franka Buytenhuijs, Evgenia Martynova, Sandra van Wilpe, Kiek Verrijp, Carl G. Figdor, I. Jolanda M. de Vries, Johannes Textor:
 ImmuNet: a segmentation-free machine learning pipeline for immune landscape phenotyping in tumors by multiplex imaging.
 Biology Methods and Protocols 10(1), bpae094, 2025. doi: 10.1093/biomethods/bpae094
2024
- 
Ankur Ankan, Johannes Textor:
 Optimum flow rate of actively deformable particles in the overdamped regime.
 Physica Scripta 99 115026, 2024. doi: 10.1088/1402-4896/ad8606
- 
Ankur Ankan, Johannes Textor:
 pgmpy: A Python Toolkit for Bayesian Networks.
 Journal of Machine Learning Research 25 (265), 1-8, 2024
- 
Jan Schering, Sander Keemink, Johannes Textor:
 Fitting Stochastic Lattice Models Using Approximate Gradients.
 ECMS International Conference on Modelling and Simulation, 2024. doi: 10.7148/2024-0366
- 
Gijs Schröder, Inge M. N. Wortel, Johannes Textor:
 Population-Based Algorithms Built on Weighted Automata.
 PPSN 2024. doi: 10.1007/978-3-031-70071-2_20
- 
Evgenia Martynova, Johannes Textor:
 A Uniformly Bounded Correlation Function for Spatial Point Patterns.
 KDD 2024. doi: 10.1145/3637528.3671891
- 
Kalijn F. Bol, Gerty Schreibelt, Martine Bloemendal, Wouter W. van Willigen, Simone Hins-de Bree, Anna L. de Goede, Annemiek J. de Boer, Kevin J. H. Bos, Tjitske Duiveman-de Boer, Michel A. M. Olde Nordkamp, Tom G. M. van Oorschot, Carlijn J. Popelier, Jeanne M. Pots, Nicole M. Scharenborg, Mandy W. M. M. van de Rakt, Valeska de Ruiter, Wilmy S. van Meeteren, Michelle M. van Rossum, Sandra J. Croockewit, Bouke J. Koeneman, Jeroen H. A. Creemers, Inge M. N. Wortel, Caroline Angerer, Mareke Brüning, Katja Petry, Andrzej Dzionek, Astrid A. van der Veldt, Dirk J. van Grünhagen, Johanna E. M. Werner, Johannes J. Bonenkamp, John B. A. G. Haanen, Marye J. Boers-Sonderen, Rutger H. T. Koornstra, Martijn F. Boomsma, Erik H. J. Aarntzen, Martin Gotthardt, James Nagarajah, Theo J. M. de Witte, Carl G. Figdor, Johannes H. W. de Wilt, Johannes Textor, Jan Willem B. de Groot, Winald R. Gerritsen & I. Jolanda M. de Vries:
 Adjuvant dendritic cell therapy in stage IIIB/C melanoma: the MIND-DC randomized phase III trial.
 Nature Communications 15, 2024. doi: 10.1038/s41467-024-45358-0
- 
Iris A.E. van der Hoorn, Evgenia Martynova, Beatriz Subtil, Jelena Meek, Kiek Verrijp, 
Johannes Textor, Georgina Flórez-Grau, Berber Piet, 
Michel M. van den Heuvel, I. Jolanda M. de Vries, Mark A. J. Gorris:
 Detection of dendritic cell subsets in the tumor microenvironment by multiplex immunohistochemistry.
 European Journal of Immunology, 2023. doi: 10.1002/eji.202350616
2023
- 
 Johannes Textor, Franka Buytenhuijs, Dakota Rogers, 
Ève Mallet Gauthier, Shabaz Sultan,  Inge M. N. Wortel,  Kathrin Kalies,
Anke Fähnrich, René Pagel,  Heather J. Melichar, Jürgen Westermann,  Judith N. Mandl: Johannes Textor, Franka Buytenhuijs, Dakota Rogers, 
Ève Mallet Gauthier, Shabaz Sultan,  Inge M. N. Wortel,  Kathrin Kalies,
Anke Fähnrich, René Pagel,  Heather J. Melichar, Jürgen Westermann,  Judith N. Mandl:
 Machine learning analysis of the T cell receptor repertoire identifies sequence features of self-reactivity
 Cell Systems, 14:1-15, 2023. doi: 10.1016/j.cels.2023.11.004
The T cell receptor (TCR) is pivotal in determining T cell fate, yet analyzing the
enormous diversity of TCRs is challenging. We 
built a machine learning algorithm that scores the self-reactivity of TCR beta chains,
and show that this algorithm can stratify complex TCR sequencing data ranging from 
cells responding to viral infections, to regulatory cells, to thymocytes.
 
- 
Ian Shrier, Steven D. Stovitz, Johannes Textor:
 Identifiability of causal effects in test-negative design studies.
 International Journal of Epidemiology, 2023. doi: 10.1093/ije/dyad102
- 
Daniel R. Parisi, Lucas E. Wiebke, Judith N. Mandl, Johannes Textor:
 Flow rate resonance of actively deforming particles.
 Scientific Reports, 2023. doi: 10.1038/s41598-023-36182-5
- 
 Jeroen H.A. Creemers, Ankur Ankan, Kit C.B. Roes, Gijs Schröder, Niven Mehra, Carl G. Figdor, I. Jolanda M. de Vries, Johannes Textor: Jeroen H.A. Creemers, Ankur Ankan, Kit C.B. Roes, Gijs Schröder, Niven Mehra, Carl G. Figdor, I. Jolanda M. de Vries, Johannes Textor:
 In silico cancer immunotherapy trials uncover the consequences of therapy-specific response patterns for clinical trial design and outcome.
 Nature Communications 14: 2348, 2023.
Late-stage cancer immunotherapy trials often lead to unusual survival curve shapes, like delayed curve separation or a plateauing curve in the treatment arm. It is critical for trial success to anticipate such effects in advance and adjust the design accordingly. We simulate immunotherapy trials using three different mathematical models to assemble virtual patient cohorts undergoing late-stage immunotherapy, chemotherapy, or combination therapies. All three models predict the distinctive survival curve shapes commonly associated with immunotherapies. We demonstrate how, by simulating various possible scenarios, the robustness of trial design choices such as sample size and randomization rate can be scrutinized, and possible pitfalls can be identified in advance. We provide readily usable, web-based implementations of our three trial simulation models to facilitate their use by biomedical researchers, doctors, and trialists.
 
- 
Inge Wortel,
	Johannes Textor:
 Interpreting T-cell search “strategies” in the light of evolution under constraints.
 PLoS Computational Biology 19(2): e1010918. doi: 10.1371/journal.pcbi.1010918
- 
Ankur Ankan,
	Inge M. N. Wortel, Kenneth A. Bollen, 
	Johannes Textor:
 Combining Graphical and Algebraic Approaches for Parameter Identification in Latent Variable Structural Equation Models.
 Proceedings of The 26th International Conference on Artificial Intelligence and Statistics, PMLR 206:7252-7264, 2023.
- 
Ankur Ankan,
	Johannes Textor:
 A Simple Unified Approach to Testing High-Dimensional Conditional Independences for Categorical and Ordinal Data.
 Proceedings of the AAAI Conference on Artificial Intelligence 37(10), 12180-12188, 2023.  doi: 10.1609/aaai.v37i10.26436
2022
- 
Lieke L. van der Woude, Mark A. J. Gorris, Inge M. N. Wortel, Jeroen H. A. Creemers, Kiek Verrijp,
Kim Monkhorst, Katrien Grünberg, Michel M van den Heuvel, Johannes Textor,
Carl G. Figdor, Berber Piet, Willemijn S. M. E. Theelen, I Jolanda M de Vries:
 Tumor microenvironment shows an immunological abscopal effect in patients with NSCLC treated with pembrolizumab-radiotherapy combination.
 Journal for Immunotherapy of Cancer
10: e005248, 2022. doi: jitc-2022-005248
- 
Mark AJ Gorris, Lieke L van der Woude, Leonie I Kroeze, Kalijn Bol, Kiek Verrijp, Avital L Amir, Jelena Meek, 
 Johannes Textor, Carl G Figdor, I Jolanda M de Vries
	Jeroen H.A. Creemers, Willem J. Lesterhuis,  Niven Mehra,  Winald R. Gerritsen:
 Paired primary and metastatic lesions of patients with ipilimumab-treated melanoma: high variation in lymphocyte infiltration and HLA-ABC expression whereas tumor mutational load is similar and correlates with clinical outcome.
 Journal for Immunotherapy of Cancer
10: e004329, 2022. doi: jitc-2021-004329
2021
- 
	Dakota Rogers, Aditi Sood, HanChen Wang, Jasper J. P. van Beek, Thomas J. Rademaker,
	Patricio Artusa, Caitlin Schneider, Connie Shen, Dylan C. Wong, Marie-Éve Lebel,
	Stephanie A. Condotta, Martin J. Richer, Andrew J. Martins, John S. Tsang, Luis Barreiro,
	Paul Francois, David Langlais, Heather J. Melichar,
	Johannes Textor, Judith N. Mandl:
 Pre-existing chromatin accessibility and gene expression differences among naïve CD4+
	T cells influence effector potential.
 Cell Reports 37(9):110064, 2021. doi: 10.1016/j.celrep.2021.110064
- 
	Bettina Weigelin, Annemieke Th Den Boer, Esther Wagena, Kelly Broen, Harry Dolstra, Rob J De Boer, Carl G Figdor, 
	Johannes Textor,
	Peter Friedl:
 Cytotoxic T cells are able to efficiently eliminate cancer cells by additive cytotoxicity.
 Nature Communications 12:5217, 2021. doi: 10.1038/s41467-021-25282-3
- 
Inge M N Wortel, Katharina Dannenberg, Jeffrey C Berry, Mark J Miller,
	Johannes Textor:
 CelltrackR: an R package for fast and flexible
	analysis of immune cell migration data.
 Immunoinformatics, 2021. doi: 10.1016/j.immuno.2021.100003
- 
 Jeroen H.A. Creemers, Willem J. Lesterhuis,  Niven Mehra,  Winald R. Gerritsen,
	Carl G. Figdor,  I. Jolanda M. de Vries, Johannes Textor: Jeroen H.A. Creemers, Willem J. Lesterhuis,  Niven Mehra,  Winald R. Gerritsen,
	Carl G. Figdor,  I. Jolanda M. de Vries, Johannes Textor:
 A tipping point in cancer-immune dynamics leads to divergent immunotherapy
	responses and hampers biomarker discovery.
 Journal for Immunotherapy of Cancer 9:e002032, 2021. doi: 10.1136/jitc-2020-002032
It remains hard to predict how cancer patients will respond to immunotherapy. Despite efforts to identify new biomarkers using advanced techniques, only a few make it to clinical use. We used computational modeling to simulate the interactions between tumors and the immune system, and used our model to investigate the effects of immune checkpoint inhibition (ICI) on patient survival. Our models showed that the transition from immune control to evasion occurs occurs suddenly rarther than gradually. Patients near this tipping point may therefore benefit significantly from ICI, while those farther away may not. This insight suggests that the varying success of immunotherapy in different patients may be explained by their proximity to this tipping point. We show that this implies that immunological and tumor-related markers need to be combined when aiming to predict tratement success, as these factors jointly determine a patient's position relative to the tipping point.
 
- 
	Inge M N Wortel, Ioana Niculescu, Martijn Kolijn, Nir Gov, Rob J de Boer, Johannes Textor:
 Local actin dynamics couple speed and persistence in a Cellular Potts Model of cell migration.
 Biophysical Journal, 2021. doi: 10.1016/j.bpj.2021.04.036
- 
 Jeroen H.A. Creemers, 
Maarten J. van der Doelen, Sandra van Wilpe, Rick Hermsen, Tjitske Duiveman-de Boer, Diederik M. Somford,
Marcel J.R. Janssen, J. P. Michiel Sedelaar,
Niven Mehra, Johannes Textor, Harm Westdorp:
 Immunophenotyping reveals longitudinal changes in circulating immune cells during radium-223 therapy in patients with metastatic castration-resistant prostate cancer.
 Frontiers in Oncology 11:667658, 2021. doi: 10.3389/fonc.2021.667658
 
- 
 Inge M N Wortel,
	Johannes Textor: Inge M N Wortel,
	Johannes Textor:
 Artistoo: build, share, and explore simulations of cells and tissues in the web browser.
 eLife 10:e61288, 2021. doi: 10.7554/eLife.61288
The cellular Potts model (CPM) can simulate biological processes at tissue scale. Artistoo (Artificial Tissue Toolbox) is a JavaScript library for building ‘explorable’ CPM simulations where viewers can change parameters interactively, exploring their effects in real time. Simulations run directly in the web browser and do not require third-party software, plugins, or back-end servers. The JavaScript implementation imposes no major performance loss compared to frameworks written in C++; Artistoo remains sufficiently fast for interactive, real-time simulations. Artistoo provides an opportunity to unlock CPM models for a broader audience: interactive simulations can be shared via a URL in a zero-install setting. Artistoo has applications in CPM research, science dissemination, open science, and education.
 
- 
Simone P Sittig, Jasper JP van Beek, Georgina Flórez‐Grau, Jorieke Weiden, Sonja I Buschow, Mirjam C van der Net, Rianne van Slooten, Marcel M Verbeek, P Ben H Geurtz, Johannes Textor, Carl G Figdor, I Jolanda M de Vries, Gerty Schreibelt:
 Human type 1 and type 2 conventional dendritic cells express indoleamine 2, 3‐dioxygenase 1 with functional effects on T cell priming.
 European Journal of Immunology, 2021. doi: 10.1002/eji.202048580
- 
Ankur Ankan, Inge M N Wortel,
	Johannes Textor:
 Testing Graphical Causal Models Using the R Package "dagitty".
 Current Protocols 1(2):e45, 2021. doi: 10.1002/cpz1.45
- 
Peter WG Tennant,
Wendy J Harrison,
Eleanor J Murray,
Kellyn F Arnold,
Laurie Berrie,
Matthew P Fox,
Sarah C Gadd,
Claire Keeble,
Lynsie R Ranker,
Johannes Textor,
Georgia D Tomova,
Mark S Gilthorpe,
George TH Ellison:
 Use of directed acyclic graphs (DAGs) to identify confounders in applied health research: review & recommendations
 International Journal of Epidemiology 50(2), 2021. doi: 10.1093/ije/dyaa213
2020
2019
- 
Benny Chain, Victor Greiff, Johannes Textor, Gur Yaari:
 Editorial: Methods and Applications of Computational Immunology.
 Frontiers in Immunology, 2019. doi: 10.3389/fimmu.2019.02818
 
- 
	Kasper Soekarjo, Johannes Textor, Rob J de Boer:
 Local Attachment Explains Small-World-Like Properties of Fibroblastic Reticular Cell Networks in Lymph Nodes.
 Journal of Immunology, 2019. doi: 10.4049/jimmunol.1801016
 Preprint
- 
	
		
			Kellyn F Arnold, George TH Ellison, Sarah C Gadd, Johannes Textor, Peter WG Tennant, Allison Heppenstall,  Mark S Gilthorpe:
 Adjustment for time-invariant and time-varying confounders in 'unexplained residuals' models for longitudinal data within a causal framework and associated challenges.
 Statistical Methods in Medical Research
		 28 (5): 1347-1364, 2019.
- 
 Benito van der Zander, Maciej Liskiewicz, Johannes Textor: Benito van der Zander, Maciej Liskiewicz, Johannes Textor:
 Separators and Adjustment Sets in Ancestral Graphs: Complete Criteria and an Algorithmic Framework.
 Artificial Intelligence 270:1-40, 2019. doi: 10.1016/j.artint.2018.12.006
 Postprint
The program dagitty.net is widely used to help building graphical models for causal inference. As the researcher builds their model, dagitty analyzes its structure in real time. To make this possible, we needed to develop novel efficient algorithms. This paper collects those algorithms and proves formally that they work as intended. Our methods have since then been picked up by various other researchers and underpin other algorithmic methods and software in addition to our own.
 
- 
	Erinke van Grinsven, Johannes Textor, 
	Lucie S. P. Hustin, Katarina Wolf, Leo Koenderman and Nienke Vrisekoop:
 Immature Neutrophils Released in Acute Inflammation Exhibit Efficient Migration despite Incomplete Segmentation of the Nucleus.
 Journal of Immunology 202(1):207-217, 2019. doi: 10.4049/jimmunol.1801255
2018
- 
	Thijs Roelofsen, Christina Wefers, Mark A. J. Gorris, Johannes Textor, Leon F. A. G. Massuger, I. Jolanda M. de Vries and Anne M. van Altena:
 Spontaneous Regression of Ovarian Carcinoma After Septic Peritonitis; A Unique Case Report.
 Frontiers in Oncology 8:562, 2018.
- 
Johannes Textor, Anke Fähnrich,
Martin Meinhardt, Cornelia Tune, Sebastian Klein, René Pagel, Peter König, Kathrin Kalies, Jürgen Westermann:
 Deep Sequencing Reveals Transient Segregation of T Cell Repertoires in Splenic T Cell Zones During an Immune Response.
 Journal of Immunology 201(2):350-358, 2018.
- 
Emilija Perković, Johannes Textor, Markus Kalisch, Marloes H. Maathuis:
 Complete graphical characterization and construction of adjustment sets in Markov equivalence classes of ancestral graphs.
 Journal of Machine Learning Research 18(220):1−62, 2018.
- 
 Felix Thoemmes, Yves Rosseel, Johannes Textor: Felix Thoemmes, Yves Rosseel, Johannes Textor:
 Local Fit Evaluation of Structural Equation Models
Using Graphical Criteria.
 Psychological Methods 23(1):27-41, 2018.
Postprint |
 R code
Model testing is a crucial part of causal inference because all causal inference predictions are predicated on the underlying model being true, or at least not too wrong. This paper unifies various types of model testing under one common umbrella: local testing, where we do not only aim to check whether our model is false, but also where exactly the problem lies. We also present software to perform this type of testing easily.
 
- 
	
		
			Mark A. J. Gorris, Altuna Halilovic, Katrin Rabold, Anne van Duffelen, Iresha N. Wickramasinghe, Dagmar Verweij, Inge M. N. Wortel, Johannes Textor, I. Jolanda M. de Vries, Carl G. Figdor:
 Eight-Color Multiplex Immunohistochemistry for Simultaneous Detection of Multiple Immune Checkpoint Molecules within the Tumor Microenvironment.
 Journal of Immunology 200(1):347-354, 2018.
2017
- 
	
		Frans Bianchi,
		Johannes Textor,
		Geert van den Bogaart:
 Transmembrane helices are an overlooked source of MHC class I epitopes.
 Frontiers in Immunology 8:1118, 2017.
- 
Till S. M. Mathan, Johannes Textor, 
Annette E. Sköld, Inge Beeren, Tom van Ooorschot, Mareke Brüning,
Carl G. Figdor, Sonja I. Buschow, Ghaith Bakdash,
I. Jolanda de Vries:
 Harnessing RNA sequencing for global, unbiased evaluation of two new adjuvants for dendritic-cell immunotherapy.
 Oncotarget 8:19879-19893, 2017.
2016
- 
Johannes Textor, Benito van der Zander, Mark K. Gilthorpe, Maciej Liskiewicz, George T.H. Ellison:
 Robust causal inference using directed acyclic graphs: the R package ‘dagitty’.
 International Journal of Epidemiology 45(6):1887-1894, 2016.
  PDF postprint | PDF postprint | Supporting Information Supporting Information
- 
Johannes Textor, Judith N. Mandl, and Rob J. de Boer:
 The Reticular Cell Network: A Robust Backbone for Immune Responses.
 PLoS Biology 14(10): e2000827, 2016.
- 
Steve Boudewijns, Kalijn F. Bol, Gerty Schreibelt, Harm Westdorp, Johannes Textor, Michelle M. van Rossum, Nicole M. Scharenborg, Annemiek J. de Boer, Mandy W.M.M. van de Rakt, Jeanne M. Pots, Tom G.M. van Oorschot, Tjitske Duiveman-de Boer, Michel A. Olde Nordkamp, Wilmy S.E.C. van Meeteren, Winette T.A. van der Graaf, Johannes J. Bonenkamp, Johannes H.W. de Wilt, Erik H.J.G. Aarntzen, Cornelis J.A. Punt, Winald R. Gerritsen, Carl G. Figdor, I. Jolanda M. de Vries:
 Adjuvant dendritic cell vaccination induces tumor-specific immune responses in the majority of stage III melanoma patients.
 OncoImmunology e1191732, 2016.
- 
Angela Vasaturo, Altuna Halilovic, Kalijn F. Bol, Dagmar I. Verweij, Willeke A.M. Blokx, Cornelis J.A. Punt, Patricia J.T.A. Groenen, Han J.H.J.M. van Krieken, Johannes Textor, I. Jolanda M. de Vries, Carl G. Figdor:
 T cell landscape in a primary melanoma predicts the survival of patients with metastatic disease after their treatment with dendritic cell vaccines.
 Cancer Research 76(12):3496-506, 2016.
2015
- 
Ioana Niculescu, Johannes Textor, Rob J. de Boer:
 Crawling and Gliding: A Computational Model for Shape-Driven 
Cell Migration.
 PLoS Computational Biology 11(10):e1004280, 2015.
- 
 Xiangyu Rao, Ilka Hoof I, Debbie Van Baarle, Can Keşmir, Johannes Textor: Xiangyu Rao, Ilka Hoof I, Debbie Van Baarle, Can Keşmir, Johannes Textor:
 HLA Preferences for Conserved Epitopes: A Potential Mechanism for Hepatitis C 
Clearance.
 Frontiers in Immunology 6:552, 2015.
People who have the gene "HLA-B27" are more likely to clear Hepatitis C virus (HCV)
infections. We show that the immune system of such people is likely to attack conserved
regions of the HCV genome (marked in red), which the virus cannot easily mutate. 
This could explain why HLA-B27 is a beneficial gene for
controlling HCV.
 
- 
 Jürgen Westermann, Tanja Lange, 
Johannes Textor, Jan Born: Jürgen Westermann, Tanja Lange, 
Johannes Textor, Jan Born:
 System Consolidation During Sleep – 
A Common Principle Underlying Psychological and 
Immunological Memory Formation.
 Trends in Neurosciences 38: 583-595, 2015.
 
In this opinion article, we note some intriguing 
parallels between memory in the central nervous system and 
memory in
the immune system.
Based on these, we argue
why sleep strengthens memory in both systems.
 Highlighted in 
EurekAlert!
- 
Justin M. Richner, Grzegorz B. Gmyrek, Jennifer Govero, Yizheng Tu, 
Gerritje J. W. van der Windt, Talibah U. Metcalf, Elias K. Haddad, 
Johannes Textor, Mark J. Miller, Michael S. Diamond:
 Age-Dependent Cell Trafficking Defects in Draining Lymph Nodes Impair
Adaptive Immunity and Control of West Nile Virus Infection.
 PLoS Pathogens 11(7): e1005027, 2015.
 Highlighted in 
EurekAlert!
- 
Johannes Textor, Alexander Idelberger, Maciej Liskiewicz:
 Learning from Pairwise Marginal Independencies.
 In Proceedings of the 31st Conference on Uncertainty in Artificial Intelligence 
(UAI 2015), pp. 882-891.
AUAI Press, 2015.
- 
Emilija Perkovic, Johannes Textor, Markus Kalisch, Marloes Maathuis:
 A Complete Generalized Adjustment Criterion.
 In Proceedings of the 31st Conference on Uncertainty in Artificial Intelligence 
(UAI 2015), pp. 682-691.
AUAI Press, 2015.
- 
Benito van der Zander, Johannes Textor, Maciej Liskiewicz:
 Efficiently Finding Conditional Instruments for Causal Inference.
 In Proceedings of the 24th International Joint Conference on Artificial 
Intelligence (IJCAI 2015), pp. 3243-3249.
AAAI Press, 2015.
- 
Paola Masuzzo, Lennart Martens, 2014 Cell Migration Workshop Participants:
 An open data ecosystem for cell migration research.
 Trends in Cell Biology 25(2):55-8, 2015.
2014
- 
 Johannes Textor, Sarah E. Henrickson, Judith N. Mandl,
Ulrich H. von Andrian, Jürgen Westermann, Rob J. de Boer,
Joost B. Beltman: Johannes Textor, Sarah E. Henrickson, Judith N. Mandl,
Ulrich H. von Andrian, Jürgen Westermann, Rob J. de Boer,
Joost B. Beltman:
 Random Migration and Signal Integration Promote Rapid and Robust T Cell Recruitment.
 PLoS Computational Biology  10(8): e1003752, 2014.
 
The immune system's 
T cells are constantly on the move: 
they migrate between different lymphoid organs approximately once per day
(A),
and move within these organs 
in a random fashion (B), changing their direction every
few minutes. We model this two-scale search and show how this 
contributes to quick detection of invading pathogens.
  PDF preprint PDF preprint
- 
Benito van der Zander, Maciej Liskiewicz, Johannes Textor:
 Constructing Separators and Adjustment Sets in Ancestral Graphs.
 In Proceedings of the 30th Conference on Uncertainty in 
Artificial Intelligence (UAI 2014),
pp. 907-916. AUAI Press, 2014.
  Technical report version (including proofs) Technical report version (including proofs)
- 
Johannes Textor, Katharina Dannenberg, Maciej Liskiewicz:
 A Generic Finite Automata Based Approach to Implementing Lymphocyte Repertoire Models.
 In Proceedings of the 2014 conference on genetic and evolutionary 
computation (GECCO'14), pp. 129-137. ACM, 2014.
  PDF preprint PDF preprint
- 
 David Banczyk, Kathrin Kalies, Lars Nachbar, Lars Bergmann, 
Philipp Schmidt, Ulrike Bode, Bianca Teegen, Philipp Steven, Tanja Lange, 
Johannes Textor, Ralf J Ludwig, Winfried Stöcker, 
Peter König, Eric Bell, and Jürgen Westermann
 Activated CD4(+) T cells enter the splenic T-cell zone and induce
auto-antibody-producing germinal centers through bystander activation.
 European Journal of Immunology 44 (1):92-102, 2014.
2013
   
 
	  
   2012
   2011
- 
Johannes Textor:
 Our Moral Ancestors: Determining Adjustment Sets in Causal Diagrams 
with Ease (in German).
 Gesundheitswesen, 73:897-900, 2011.
- 
Johannes Textor, Juliane Hardt, 
Sven Knüppel:
 DAGitty: A Graphical Tool for Analyzing Causal Diagrams.
 Epidemiology, 5(22):745, 2011.
- 
Rüdiger Reischuk, Johannes Textor:
 Stochastic Search With Locally Clustered Targets:
	Learning from T Cells.
 In 10th International Conference on Artificial Immune Systems 
(ICARIS 2011), Volume 6825 of Lecture Notes in Computer Science,
pp. 146-159. 
Springer, 2011.
  PDF preprint PDF preprint
- 
 Johannes Textor, Antonio Peixoto, 
Sarah E. Henrickson, Mathieu Sinn, Ulrich H. von Andrian, Jürgen Westermann: Johannes Textor, Antonio Peixoto, 
Sarah E. Henrickson, Mathieu Sinn, Ulrich H. von Andrian, Jürgen Westermann:
 Defining the Quantitative Limits of Intravital Two-Photon Lymphocyte 
Tracking.
 PNAS, 108(30):12401-12406, 2011.
Two-photon imaging allows to track cells in living animals. 
But lymphocytes may spend days in lymph nodes,
and two-photon imaging can only run for a few hours. We wondered how much
this limits the precision with which we can describe lymphocyte motion based on
such experiments. By simulating T cell motion in a realistic artificial lymph node that
we reconstructed from tissue slices, we show that important 
behaviors can indeed escape two-photon imaging.
 
- 
Johannes Textor, Maciej Liskiewicz:
 Adjustment Criteria in Causal Diagrams: An Algorithmic Perspective.
 In Proceedings of the 27th Conference on Uncertainty in
Artificial Intelligence (UAI 2011), pp. 681-688. 
AUAI Press, 2011.
  PDF preprint PDF preprint
- 
Michael Elberfeld, Johannes Textor:
 Negative Selection Algorithms on Strings with Efficient Training and 
Linear-Time Classification.
 Theoretical Computer Science, 412(6):534-542, 2011.
  PDF preprint PDF preprint
2010
2009
- 
Johannes Textor, Björn Hansen:
 Hybrid Simulation Algorithms for an Agent Based Model of the 
Immune Response.
 Cybernetics and Systems 
40(5):390-417, 2009.
  PDF preprint PDF preprint
- 
Michael Elberfeld, Johannes Textor:
 Efficient Algorithms for String-Based Negative Selection.
 In Proceedings of the 8th International Conference on Artificial 
Immune Systems (ICARIS 2009), Volume 5666 of 
Lecture Notes in Computer Science, pp. 109-121. 
Springer, 2009.
  PDF preprint PDF preprint
- 
Johannes Textor, Benjamin Feldner:
 An XML Pipeline Based System Architecture for Managing Bibliographic Metadata.
 In Metadata and Semantics Research (MTSR'09), Volume 46 of 
Communications in Computer and Information Science, pp. 130-140. 
Springer, 2009.
  Download PDF Download PDF
2008
2007
 
   PhD Dissertation
   
      My PhD thesis 
      was carried out at the Institute of Theoretical Computer Science,
      University of Luebeck, Germany, under joint 
      supervision of  Rüdiger Reischuk (Theoretical Computer Science)
      and Jürgen Westermann (Immunology).  
   
   
	Johannes Textor:
	Search and Learning in the Immune System: Models of Immune 
Surveillance and Negative Selection.
	PhD Dissertation, University of Luebeck, 2011.
	 Download PDF
 Download PDF
   
   Software
   
   
		Some software I wrote for my research is available for download. You can also visit my profile on github.
   
   
   
		- An experimental implementation of my work 
			on efficient negative
		selection algorithms written in Java.
		
- DAGitty, a tool to 
		draw and analyze causal diagrams written in JavaScript.
		
- LImmSim, an agent-based
		simulation of the immune system written in C++. 
		
- R packages for epitope prediction, cell track analysis,
		and causal analysis.
		
Awards & important grants
	Dates listed refer to the year in which the award was given.
   
	- Program Grant (USD 1050K), Human Frontiers Science Program, 2020.
- Vidi Grant (€ 800K), Netherlands Organization for Scientific Research, 2019.
- Bas Mulder Award (€ 500K),
		Dutch Cancer Research Foundation, 2017.
- IBM Best Student Paper Award 2014 for our paper (first author: Benito van der Zander)
		"Constructing Separators and Adjustment Sets in Ancestral Graphs"
		at UAI 2014.
- Stephan Weiland Preis, young investigator's 
award by the German society for Epidemiology, 2012.
- GI Dissertationspreis 2011, joint award
  by the German, Austrian and Swiss societies for computer
science for the best computer science dissertation of the year, 2012. 
 
 Press releases (in German):
GI 
 |
Uni Lübeck
- Staatlicher Universitätspreis 2011, 
	award for the best STEM dissertation, University of Lübeck, Germany, 2012.
	
- Best paper awards at the international conference on
artificial immune systems (ICARIS) in 2012 and 2009; 
 best student paper award at ICARIS in 2007; nominated for best 
paper award at GECCO 2010 (genetics based machine learning track).