Jan Chojnacki

Affiliations

Department of Clinical Nutrition and Gastroenterological Diagnostics, Medical University of Lodz, 90-647 Lodz, Poland.

Publications (43)

Activation of N

Inorganic chemistry

Avec: Natalia Szynkiewicz , Jarosław Chojnacki , Rafał Grubba

Vitamin D in Triple-Negative and BRCA1-Deficient Breast Cancer-Implications for Pathogenesis and Therapy.

International journal of molecular sciences

Avec: Janusz Blasiak , Elzbieta Pawlowska , Jan Chojnacki , Joanna Szczepanska , Michal Fila , Cezary Chojnacki

The Reactivity of Phosphanylphosphinidene Complexes of Transition Metals Toward Terminal Dihaloalkanes.

Inorganic chemistry

Avec: Anna Ordyszewska , Natalia Szynkiewicz , Jarosław Chojnacki , Jerzy Pikies , Rafał Grubba

[Zaburzenia czynnościowe przewodu pokarmowego u osób z przerostem bakteryjnym jelita cienkiego].

Polski merkuriusz lekarski : organ Polskiego Towarzystwa Lekarskiego

Avec: Paulina Konrad , Aleksandra Błońska , Jan Chojnacki , Paulina Mikulska , Marta Mędrek-Socha , Cezary Chojnacki

The influence of the type of halogen substituent and its position on the molecular conformation, intermolecular interactions and crystal packing for a series of 1-benzoyl-3-(halogenophenyl)thioureas.

Acta crystallographica. Section C, Structural chemistry

Avec: Damian Rosiak , Andrzej Okuniewski , Jarosław Chojnacki

Modeling iPSC-derived human neurofibroma-like tumors in mice uncovers the heterogeneity of Schwann cells within plexiform neurofibromas.

Cell reports

Avec: Helena Mazuelas , Míriam Magallón-Lorenz , Juana Fernández-Rodríguez , Itziar Uriarte-Arrazola , Yvonne Richaud-Patin , Ernest Terribas , Alberto Villanueva , Elisabeth Castellanos , Ignacio Blanco , Ángel Raya , Jakub Chojnacki , Holger Heyn , Cleofé Romagosa , Conxi Lázaro , Bernat Gel , Meritxell Carrió , Eduard Serra

Phosphinoborenium cations stabilized by

Dalton transactions (Cambridge, England : 2003)

Avec: Kinga Kaniewska-Laskowska , Anna Ordyszewska , Tomasz Wojnowski , Hanna Halenka , Marcin Czapla , Jarosław Chojnacki , Rafał Grubba

Exploring the Antitumor Efficacy of N-Heterocyclic Nitrilotriacetate Oxidovanadium(IV) Salts on Prostate and Breast Cancer Cells.

Molecules (Basel, Switzerland)

Avec: Katarzyna Chmur , Aleksandra Tesmar , Magdalena Zdrowowicz , Damian Rosiak , Jarosław Chojnacki , Dariusz Wyrzykowski

Super-Resolution STED Microscopy-Based Mobility Studies of the Viral Env Protein at HIV-1 Assembly Sites of Fully Infected T-Cells.

Viruses

Avec: Jakub Chojnacki , Christian Eggeling

Nutrition in Cancer Therapy in the Elderly-An Epigenetic Connection?

Nutrients

Avec: Janusz Blasiak , Jan Chojnacki , Elzbieta Pawlowska , Joanna Szczepanska , Cezary Chojnacki

Serotonin in the Pathogenesis of Lymphocytic Colitis.

Journal of clinical medicine

Avec: Cezary Chojnacki , Tomasz Popławski , Anita Gasiorowska , Jan Chojnacki , Janusz Blasiak

[The role of intraepithelial lymphocytes in pathogenesis of small intestinal bacterial overgrowth syndrome].

Polski merkuriusz lekarski : organ Polskiego Towarzystwa Lekarskiego

Avec: Cezary Chojnacki , Paulina Mikulska , Alina Knopik-Dąbrowicz , Aleksandra Kaczka , Jan Chojnacki , Paulina Konrad

Batch Pyrolysis and Co-Pyrolysis of Beet Pulp and Wheat Straw.

Materials (Basel, Switzerland)

Avec: Jerzy Chojnacki , Jan Kielar , Leon Kukiełka , Tomáš Najser , Aleksandra Pachuta , Bogusława Berner , Agnieszka Zdanowicz , Jaroslav Frantík , Jan Najser , Václav Peer

New 2-[(4-Amino-6-

International journal of molecular sciences

Avec: Łukasz Tomorowicz , Beata Żołnowska , Krzysztof Szafrański , Jarosław Chojnacki , Ryszard Konopiński , Ewa A Grzybowska , Jarosław Sławiński , Anna Kawiak

Exploring the Reactivity of Unsymmetrical Diphosphanes toward Heterocumulenes: Access to Phosphanyl and Phosphoryl Derivatives of Amides, Imines, and Iminoamides.

Inorganic chemistry

Avec: Natalia Szynkiewicz , Jarosław Chojnacki , Rafał Grubba

Straw pyrolysis for use in electricity storage installations.

Heliyon

Avec: Jerzy Chojnacki , Jan Kielar , Jan Najser , Jaroslav Frantík , Tomáš Najser , Marcel Mikeska , Błażej Gaze , Bernard Knutel

Reactivity of triphosphinoboranes towards H

Dalton transactions (Cambridge, England : 2003)

Avec: Anna Ordyszewska , Jarosław Chojnacki , Rafał Grubba

Simple colorimetric copper(II) sensor - Spectral characterization and possible applications.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy

Avec: Błażej Galiński , Jarosław Chojnacki , Ewa Wagner-Wysiecka

Role of Siglecs in viral infections: A double-edged sword interaction.

Molecular aspects of medicine

Avec: Dàlia Raïch-Regué , Patricia Resa-Infante , Marçal Gallemí , Fernando Laguia , Xabier Muñiz-Trabudua , Jordana Muñoz-Basagoiti , Daniel Perez-Zsolt , Jakub Chojnacki , Susana Benet , Bonaventura Clotet , Javier Martinez-Picado , Nuria Izquierdo-Useros

Application of nonmetallic frustrated cations in the activation of small molecules.

Dalton transactions (Cambridge, England : 2003)

Avec: Kinga Kaniewska-Laskowska , Marcin Czapla , Jarosław Chojnacki , Rafał Grubba

Novel benzenesulfonamide-aroylhydrazone conjugates as carbonic anhydrase inhibitors that induce MAPK/ERK-mediated cell cycle arrest and mitochondrial-associated apoptosis in MCF-7 breast cancer cells.

Bioorganic & medicinal chemistry

Avec: Beata Żołnowska , Jarosław Sławiński , Jarosław Chojnacki , Andrea Petreni , Claudiu T Supuran , Anna Kawiak

Three-dimensional imaging in myotonic dystrophy type 1: Linking molecular alterations with disease phenotype.

Neurology. Genetics

Avec: Alfonsina Ballester-Lopez , Judit Núñez-Manchón , Emma Koehorst , Ian Linares-Pardo , Miriam Almendrote , Giuseppe Lucente , Nicolau Guanyabens , Marta Lopez-Osias , Adrián Suárez-Mesa , Shaliza Ann Hanick , Jakub Chojnacki , Alejandro Lucia , Guillem Pintos-Morell , Jaume Coll-Cantí , Alicia Martínez-Piñeiro , Alba Ramos-Fransi , Gisela Nogales-Gadea

Anti-Siglec-1 antibodies block Ebola viral uptake and decrease cytoplasmic viral entry.

Nature microbiology

Avec: Daniel Perez-Zsolt , Itziar Erkizia , Maria Pino , Mónica García-Gallo , Maria Teresa Martin , Susana Benet , Jakub Chojnacki , María Teresa Fernández-Figueras , Dolores Guerrero , Victor Urrea , Xabier Muñiz-Trabudua , Leonor Kremer , Javier Martinez-Picado , Nuria Izquierdo-Useros

Structural and spectroscopic analysis of a new family of monomeric diphosphinoboranes.

Dalton transactions (Cambridge, England : 2003)

Avec: Anna Ordyszewska , Natalia Szynkiewicz , Emil Perzanowski , Jarosław Chojnacki , Aleksandra Wiśniewska , Rafał Grubba

Expression of tryptophan hydroxylase in gastric mucosa in symptomatic and asymptomatic

Archives of medical science : AMS

Avec: Cezary Chojnacki , Tomasz Popławski , Aleksandra Błońska , Janusz Błasiak , Marek Romanowski , Jan Chojnacki

Altered dopamine signalling in chronic epigastric pain syndrome.

Journal of physiology and pharmacology : an official journal of the Polish Physiological Society

Avec: C Chojnacki , T Poplawski , J Blasiak , M Fila , P Konrad , J Chojnacki

Nutrients to Improve Mitochondrial Function to Reduce Brain Energy Deficit and Oxidative Stress in Migraine.

Nutrients

Avec: Michal Fila , Cezary Chojnacki , Jan Chojnacki , Janusz Blasiak

Characterization of RAN Translation and Antisense Transcription in Primary Cell Cultures of Patients with Myotonic Dystrophy Type 1.

Journal of clinical medicine

Avec: Emma Koehorst , Judit Núñez-Manchón , Alfonsina Ballester-López , Miriam Almendrote , Giuseppe Lucente , Andrea Arbex , Jakub Chojnacki , Rafael P Vázquez-Manrique , Ana Pilar Gómez-Escribano , Guillem Pintos-Morell , Jaume Coll-Cantí , Alba Ramos-Fransi , Alicia Martínez-Piñeiro , Mònica Suelves , Gisela Nogales-Gadea

Dissemination of

Journal of extracellular vesicles

Avec: Susana Benet , Cristina Gálvez , Francis Drobniewski , Irina Kontsevaya , Lilibeth Arias , Marta Monguió-Tortajada , Itziar Erkizia , Victor Urrea , Ruo-Yan Ong , Marina Luquin , Maeva Dupont , Jakub Chojnacki , Judith Dalmau , Paula Cardona , Olivier Neyrolles , Geanncarlo Lugo-Villarino , Christel Vérollet , Esther Julián , Hansjakob Furrer , Huldrych F Günthard , Paul R Crocker , Gustavo Tapia , Francesc E Borràs , Jacques Fellay , Paul J McLaren , Amalio Telenti , Pere-Joan Cardona , Bonaventura Clotet , Cristina Vilaplana , Javier Martinez-Picado , Nuria Izquierdo-Useros

Effect of chemical structure on complexation efficiency of aromatic drugs with cyclodextrins: The example of dibenzazepine derivatives.

Carbohydrate polymers

Avec: Koleta Hemine , Anna Skwierawska , Cyprian Kleist , Michal Olewniczak , Katarzyna Szwarc-Karabyka , Dariusz Wyrzykowski , Anna Mieszkowska , Jaroslaw Chojnacki , Jacek Czub , Lukasz Nierzwicki

Vitamin D May Protect against Breast Cancer through the Regulation of Long Noncoding RNAs by VDR Signaling.

International journal of molecular sciences

Avec: Janusz Blasiak , Jan Chojnacki , Elzbieta Pawlowska , Aleksandra Jablkowska , Cezary Chojnacki

Phosphinoborinium cation: a synthon for cationic B-P bond systems.

Chemical communications (Cambridge, England)

Avec: Kinga Kaniewska-Laskowska , Katarzyna Klimsiak , Natalia Szynkiewicz , Jarosław Chojnacki , Rafał Grubba

Novel 2-alkythio-4-chloro-

International journal of molecular sciences

Avec: Beata Żołnowska , Jarosław Sławiński , Mariusz Belka , Tomasz Bączek , Jarosław Chojnacki , Anna Kawiak

Do Phenyl Substituents Affect the Properties of Azobenzocrown Derivatives?

ChemPlusChem

Avec: Ewa Wagner-Wysiecka , Paulina Szulc , Elżbieta Luboch , Jarosław Chojnacki , Dominika Laskowska , Paulina Miklaszewska , Paweł Sowiński

Synthesis of 3-(2-Alkylthio-4-chloro-5-methylbenzenesulfonyl)-2-(1-phenyl-3-arylprop-2-enylideneamino)guanidine Derivatives with Pro-Apoptotic Activity against Cancer Cells.

International journal of molecular sciences

Avec: Aneta Pogorzelska , Jarosław Sławiński , Anna Kawiak , Grzegorz Stasiłojć , Jarosław Chojnacki

Nutrition and Calcitonin Gene Related Peptide (CGRP) in Migraine.

Nutrients

Avec: Michal Fila , Jan Chojnacki , Piotr Sobczuk , Cezary Chojnacki , Janusz Blasiak

Photochemical Rearrangement of a 19-Membered Azoxybenzocrown: Products and their Properties.

ChemPlusChem

Avec: Ewa Wagner-Wysiecka , Paulina Szulc , Elżbieta Luboch , Jarosław Chojnacki , Katarzyna Szwarc-Karabyka , Natalia Łukasik , Miłosz Murawski , Michał Kosno

Plasma-derived extracellular vesicles from Plasmodium vivax patients signal spleen fibroblasts via NF-kB facilitating parasite cytoadherence.

Nature communications

Avec: Haruka Toda , Miriam Diaz-Varela , Joan Segui-Barber , Wanlapa Roobsoong , Barbara Baro , Susana Garcia-Silva , Alicia Galiano , Melisa Gualdrón-López , Anne C G Almeida , Marcelo A M Brito , Gisely Cardoso de Melo , Iris Aparici-Herraiz , Carlos Castro-Cavadía , Wuelton Marcelo Monteiro , Eva Borràs , Eduard Sabidó , Igor C Almeida , Jakub Chojnacki , Javier Martinez-Picado , Maria Calvo , Pilar Armengol , Jaime Carmona-Fonseca , Maria Fernanda Yasnot , Ricardo Lauzurica , Antonio Marcilla , Hector Peinado , Mary R Galinski , Marcus V G Lacerda , Jetsumon Sattabongkot , Carmen Fernandez-Becerra , Hernando A Del Portillo

Zinc and Autophagy in Age-Related Macular Degeneration.

International journal of molecular sciences

Avec: Janusz Blasiak , Elzbieta Pawlowska , Jan Chojnacki , Joanna Szczepanska , Cezary Chojnacki , Kai Kaarniranta

The Quaternization Reaction of 5-

Molecules (Basel, Switzerland)

Avec: Barbara Dmochowska , Rafał Ślusarz , Jarosław Chojnacki , Justyna Samaszko-Fiertek , Janusz Madaj

[The influence of serotonin on psychosomatic symptoms in patients with functional dyspepsia].

Polski merkuriusz lekarski : organ Polskiego Towarzystwa Lekarskiego

Avec: Paulina Mikulska , Jan Chojnacki , Agnieszka Stępień , Paulina Konrad , Cezary Chojnacki

HIV-1 Gag specifically restricts PI(4,5)P2 and cholesterol mobility in living cells creating a nanodomain platform for virus assembly.

Science advances

Avec: C Favard , J Chojnacki , P Merida , N Yandrapalli , J Mak , C Eggeling , D Muriaux

Molecular recognition of the native HIV-1 MPER revealed by STED microscopy of single virions.

Nature communications

Avec: Pablo Carravilla , Jakub Chojnacki , Edurne Rujas , Sara Insausti , Eneko Largo , Dominic Waithe , Beatriz Apellaniz , Taylor Sicard , Jean-Philippe Julien , Christian Eggeling , José L Nieva

Réseau de co-auteurs

Jarosław Chojnacki 18 collaborations

Cezary Chojnacki 11 collaborations

Jakub Chojnacki 9 collaborations

Rafał Grubba 8 collaborations

Janusz Blasiak 7 collaborations

Natalia Szynkiewicz 5 collaborations

Elzbieta Pawlowska 4 collaborations

Anna Ordyszewska 4 collaborations

Jarosław Sławiński 4 collaborations

Anna Kawiak 4 collaborations

Javier Martinez-Picado 4 collaborations

Joanna Szczepanska 3 collaborations

Michal Fila 3 collaborations

Paulina Konrad 3 collaborations

Paulina Mikulska 3 collaborations

Kinga Kaniewska-Laskowska 3 collaborations

Beata Żołnowska 3 collaborations

Ewa Wagner-Wysiecka 3 collaborations

Susana Benet 3 collaborations

Nuria Izquierdo-Useros 3 collaborations

Aleksandra Błońska 2 collaborations

Damian Rosiak 2 collaborations

Marcin Czapla 2 collaborations

Dariusz Wyrzykowski 2 collaborations

Christian Eggeling 2 collaborations

Tomasz Popławski 2 collaborations

Jerzy Chojnacki 2 collaborations

Jan Kielar 2 collaborations

Tomáš Najser 2 collaborations

Jaroslav Frantík 2 collaborations

Jan Najser 2 collaborations

Xabier Muñiz-Trabudua 2 collaborations

Daniel Perez-Zsolt 2 collaborations

Bonaventura Clotet 2 collaborations

Judit Núñez-Manchón 2 collaborations

Emma Koehorst 2 collaborations

Miriam Almendrote 2 collaborations

Giuseppe Lucente 2 collaborations

Guillem Pintos-Morell 2 collaborations

Jaume Coll-Cantí 2 collaborations

Alicia Martínez-Piñeiro 2 collaborations

Alba Ramos-Fransi 2 collaborations

Gisela Nogales-Gadea 2 collaborations

Itziar Erkizia 2 collaborations

Victor Urrea 2 collaborations

J Chojnacki 2 collaborations

Katarzyna Szwarc-Karabyka 2 collaborations

Paulina Szulc 2 collaborations

Elżbieta Luboch 2 collaborations

Jerzy Pikies 1 collaboration

Marta Mędrek-Socha 1 collaboration

Andrzej Okuniewski 1 collaboration

Helena Mazuelas 1 collaboration

Míriam Magallón-Lorenz 1 collaboration

Juana Fernández-Rodríguez 1 collaboration

Itziar Uriarte-Arrazola 1 collaboration

Yvonne Richaud-Patin 1 collaboration

Ernest Terribas 1 collaboration

Alberto Villanueva 1 collaboration

Elisabeth Castellanos 1 collaboration

Ignacio Blanco 1 collaboration

Ángel Raya 1 collaboration

Holger Heyn 1 collaboration

Cleofé Romagosa 1 collaboration

Conxi Lázaro 1 collaboration

Bernat Gel 1 collaboration

Meritxell Carrió 1 collaboration

Eduard Serra 1 collaboration

Tomasz Wojnowski 1 collaboration

Hanna Halenka 1 collaboration

Katarzyna Chmur 1 collaboration

Aleksandra Tesmar 1 collaboration

Magdalena Zdrowowicz 1 collaboration

Anita Gasiorowska 1 collaboration

Alina Knopik-Dąbrowicz 1 collaboration

Aleksandra Kaczka 1 collaboration

Leon Kukiełka 1 collaboration

Aleksandra Pachuta 1 collaboration

Bogusława Berner 1 collaboration

Agnieszka Zdanowicz 1 collaboration

Václav Peer 1 collaboration

Łukasz Tomorowicz 1 collaboration

Krzysztof Szafrański 1 collaboration

Ryszard Konopiński 1 collaboration

Ewa A Grzybowska 1 collaboration

Marcel Mikeska 1 collaboration

Błażej Gaze 1 collaboration

Bernard Knutel 1 collaboration

Błażej Galiński 1 collaboration

Dàlia Raïch-Regué 1 collaboration

Patricia Resa-Infante 1 collaboration

Marçal Gallemí 1 collaboration

Fernando Laguia 1 collaboration

Jordana Muñoz-Basagoiti 1 collaboration

Andrea Petreni 1 collaboration

Claudiu T Supuran 1 collaboration

Alfonsina Ballester-Lopez 1 collaboration

Ian Linares-Pardo 1 collaboration

Nicolau Guanyabens 1 collaboration

Marta Lopez-Osias 1 collaboration

Adrián Suárez-Mesa 1 collaboration

Shaliza Ann Hanick 1 collaboration

Alejandro Lucia 1 collaboration

Maria Pino 1 collaboration

Mónica García-Gallo 1 collaboration

Maria Teresa Martin 1 collaboration

María Teresa Fernández-Figueras 1 collaboration

Dolores Guerrero 1 collaboration

Leonor Kremer 1 collaboration

Emil Perzanowski 1 collaboration

Aleksandra Wiśniewska 1 collaboration

Janusz Błasiak 1 collaboration

Marek Romanowski 1 collaboration

C Chojnacki 1 collaboration

T Poplawski 1 collaboration

J Blasiak 1 collaboration

M Fila 1 collaboration

P Konrad 1 collaboration

Alfonsina Ballester-López 1 collaboration

Andrea Arbex 1 collaboration

Rafael P Vázquez-Manrique 1 collaboration

Ana Pilar Gómez-Escribano 1 collaboration

Mònica Suelves 1 collaboration

Cristina Gálvez 1 collaboration

Francis Drobniewski 1 collaboration

Irina Kontsevaya 1 collaboration

Lilibeth Arias 1 collaboration

Marta Monguió-Tortajada 1 collaboration

Ruo-Yan Ong 1 collaboration

Marina Luquin 1 collaboration

Maeva Dupont 1 collaboration

Judith Dalmau 1 collaboration

Paula Cardona 1 collaboration

Olivier Neyrolles 1 collaboration

Geanncarlo Lugo-Villarino 1 collaboration

Christel Vérollet 1 collaboration

Esther Julián 1 collaboration

Hansjakob Furrer 1 collaboration

Huldrych F Günthard 1 collaboration

Paul R Crocker 1 collaboration

Gustavo Tapia 1 collaboration

Francesc E Borràs 1 collaboration

Jacques Fellay 1 collaboration

Paul J McLaren 1 collaboration

Amalio Telenti 1 collaboration

Pere-Joan Cardona 1 collaboration

Cristina Vilaplana 1 collaboration

Koleta Hemine 1 collaboration

Anna Skwierawska 1 collaboration

Cyprian Kleist 1 collaboration

Michal Olewniczak 1 collaboration

Anna Mieszkowska 1 collaboration

Jaroslaw Chojnacki 1 collaboration

Jacek Czub 1 collaboration

Lukasz Nierzwicki 1 collaboration

Aleksandra Jablkowska 1 collaboration

Katarzyna Klimsiak 1 collaboration

Mariusz Belka 1 collaboration

Tomasz Bączek 1 collaboration

Dominika Laskowska 1 collaboration

Paulina Miklaszewska 1 collaboration

Paweł Sowiński 1 collaboration

Aneta Pogorzelska 1 collaboration

Grzegorz Stasiłojć 1 collaboration

Piotr Sobczuk 1 collaboration

Natalia Łukasik 1 collaboration

Miłosz Murawski 1 collaboration

Michał Kosno 1 collaboration

Haruka Toda 1 collaboration

Miriam Diaz-Varela 1 collaboration

Joan Segui-Barber 1 collaboration

Wanlapa Roobsoong 1 collaboration

Barbara Baro 1 collaboration

Susana Garcia-Silva 1 collaboration

Alicia Galiano 1 collaboration

Melisa Gualdrón-López 1 collaboration

Anne C G Almeida 1 collaboration

Marcelo A M Brito 1 collaboration

Gisely Cardoso de Melo 1 collaboration

Iris Aparici-Herraiz 1 collaboration

Carlos Castro-Cavadía 1 collaboration

Wuelton Marcelo Monteiro 1 collaboration

Eva Borràs 1 collaboration

Eduard Sabidó 1 collaboration

Igor C Almeida 1 collaboration

Maria Calvo 1 collaboration

Pilar Armengol 1 collaboration

Jaime Carmona-Fonseca 1 collaboration

Maria Fernanda Yasnot 1 collaboration

Ricardo Lauzurica 1 collaboration

Antonio Marcilla 1 collaboration

Hector Peinado 1 collaboration

Mary R Galinski 1 collaboration

Marcus V G Lacerda 1 collaboration

Jetsumon Sattabongkot 1 collaboration

Carmen Fernandez-Becerra 1 collaboration

Hernando A Del Portillo 1 collaboration

Kai Kaarniranta 1 collaboration

Barbara Dmochowska 1 collaboration

Rafał Ślusarz 1 collaboration

Justyna Samaszko-Fiertek 1 collaboration

Janusz Madaj 1 collaboration

Agnieszka Stępień 1 collaboration

C Favard 1 collaboration

P Merida 1 collaboration

N Yandrapalli 1 collaboration

J Mak 1 collaboration

C Eggeling 1 collaboration

D Muriaux 1 collaboration

Pablo Carravilla 1 collaboration

Edurne Rujas 1 collaboration

Sara Insausti 1 collaboration

Eneko Largo 1 collaboration

Dominic Waithe 1 collaboration

Beatriz Apellaniz 1 collaboration

Taylor Sicard 1 collaboration

Jean-Philippe Julien 1 collaboration

José L Nieva 1 collaboration