Biomarker Research Group

Head of the group: 
Éva Csősz, PhD
Group members: 

Dr. Éva Csősz – research fellow, group leader

Prof. Dr. József Tőzsér – full professor, head of the department

Dr. Adrienne Csutak – ophthalmologyst, assistant professor

Dr. Krisztina Joóné Matúz – research fellow

Dr. Gergő Kalló – junior reserach fellow

Kamilla Bereczki – technician

Ph.D. students

Bernadett Márkus– Ph.D. student

Eszter Deák – Ph.D. student

Diploma students

Tímea Székely

József Arany

Gábor Molnár

Zsófia Tarsoly

Anita Varga

László Sinka

Fruzsina Kovács


The primary goal of the Biomarker Research Group is to identify protein or lipid type molecules which can help the diagnosis of different diseases or can serve as therapeutic targets. The Biomarker Research Group focuses on the examination of the molecular mechanisms laying behind diseases affecting mainly the eldelry population such as diabetes, Alzheimer's disease, glaucoma, cardiovascular disease and some forms of cancer. We would like to understand the pathophysiological changes leading to the disease and also to find suitable biomarkers which can help the diagnosis of these diseases. The Biomarker Research Group has good collaboration with the cliniques of the Clinical Center of the University of Debrecen and by using the state-of-the art analytical techniques can analyze the human samples coming to the laboratory. We are mainly focusing on the analysis of body fluids collected by non-invasive means and analyze the protein and lipid profile changes of these human samples. The members of the research group are committed to develop and utilize novel mass spectrometry-related techniques to be able to analyze the alterations of proteins and lipids in the biological samples.

Research topics

Analysis of tear proteins of patients with Alzheimer’s disease

Alzheimer’s disease is one of the most common age-related dementia affecting millions people worldwide. Multiple studies highlighted the role of amyloid-β peptides and the hyperphosphorilated tau protein in the pathophysiology of the disease. The presence of amyloid plaques was demonstrated in retina and lens of patients with Alzheimer’s disease and according to animal models there is a correlation between the amyloid depositions in the retina and brain. Tear is an easy to collect body fluid containing near 1500 proteins. We are analyzing the tears of patients with Alzheimer’s disease with classical proteomics and targeted mass spectrometry methods in order to identify possible new biomarkers. According to our results the combination of lipocalin-1, dermcidin, lacritin and lysozyme C can be used as biomarker for Alzheimer’s disease. In order to be able to utilize these potential biomarkers more analyses should be performed on larger patient cohorts.


Proteomics analysis of the human sweat

The human skin creates an effective chemical barrier by secreting antimicrobial and immunmodulatory proteins as part of the innate immune system. Some of the antimicrobial peptides were shown to be expressed constitutively while others were found to be inducible upon pathogenic stimuli. Our workgroup has identified the most abundant proteins in the human sweat using state of the art mass spectrometry quantification techniques and have developed SRM-based methods for the analysis of the components of the chemical barrier. Our findings with regard to the proteins forming the chemical barrier of the skin can be further used as a starting point for non-invasive sweat biomarker research.


Identification of salivary biomarkers characteristic for oral squamous cell carcinoma (OSCC)

Hungarian population occupies the top places of statistics regarding oral squamous cell carcinoma incidence, thus the identification of new biomarkers is essential in order to increase the survival rate of the patients. Our workgroup examined saliva samples of patients with oral squamous cell carcinoma by targeted mass spectrometry method and Luminex-based multiplex assay in order to identify possible new biomarkers for the Hungarian population. According to our data, the level of IL-6, S100A9 and thioredoxin changed significantly in the saliva of patients with OSCC.


Multimodal examination of neurodegenerative eye diseases

Glaucoma and diabetic retinopathy are neurodegenerative conditions which can be considered as leading causes of blindness worldwide. Our research group analyses tear samples of patients with different stages of diabetic retinopathy and of patients with glaucoma underwent trabeculectomy. The results of the clinical examination, corneal confocal microscopy and retinal photography examinations are combined with proteomic data to achieve a more comprehensive understanding of the pathopysiological condition present and also to find suitable markers which can help the diagnosis. Databanks of patient data, results of clinical examinations and proteomics analyses are generated permitting the further examination of data coming from different modalities.


Oncoproteomics from systems biology point of view

The analysis of protein profile changes in biological samples originating from patiens having different forms of brain cancers, breast cancer, oral cancer or malignant melanoma and the combination of proteomic data with lipidomic, transcriptomic and microbiota data is the major goal of this project. A system biology approach along with network analysis will be used to evaluate data coming from different omics approaches in order to get a clearer picture of the pathological change and response to therapy.


  1. Virga J, Bognár L, Hortobágyi T, Zahuczky G, Csősz É, Kalló G, Tóth J, Hutóczki G, Reményi-Puskár J, Steiner L, Klekner A. Tumor Grade versus Expression of Invasion-Related Molecules in Astrocytoma. Pathol Oncol Res. 2017 Feb 4. doi: 10.1007/s12253-017-0194-6. [Epub ahead of print] IF: 1.94
  2. Csomós K, Kristóf E, Jakob B, Csomós I, Kovács G, Rotem O, Hodrea J, Bagoly Z, Muszbek L, Balajthy Z, Csősz É, Fésüs L. Protein cross-linking by chlorinated polyamines and transglutamylation stabilizes neutrophil extracellular traps. Cell Death Dis. 2016 Aug 11;7(8):e2332. doi: 10.1038/cddis.2016.200. IF: 5.378
  3. Gergő Kalló, Miklós Emri, Zsófia Varga, Bernadett Ujhelyi, József Tőzsér, Adrienne Csutak and Éva Csősz: Changes in the chemical barrier composition of tears in Alzheimer's disease reveal potential tear diagnostic biomarkers. PLoS One. 2016 Jun 21;11(6):e0158000. doi: 10.1371/journal.pone.0158000. eCollection 2016. IF:3.54
  4. Csősz É, Kalló G, Márkus B, Deák E, Csutak A, Tőzsér J. Quantitative body fluid proteomics in medicine - A focus on minimal invasiveness. J Proteomics. 2017 Feb 5;153:30-43. doi: 10.1016/j.jprot.2016.08.009. IF:3.867
  5. Éva Csősz, Gergő Kalló, Eszter Deák; Adrienne Csutak, József Tőzsér: Diabetic retinopathy: proteomic approaches to help the differential diagnosis and to understand the underlying molecular mechanisms. J Proteomics. 2017 Jan 6;150:351-358. doi:10.1016/j.jprot.2016.06.034. IF:2.3
  6. József Virga, László Bognár, Tibor Hortobágyi, Gábor Zahuczky, Éva Csősz, Gergő Kalló, Judit Tóth, Gábor Hutóczki, Judit Reményi-Puskár, László Steiner, Almos Klekner: Prognostic role of the expression of invasion-related molecules in glioblastoma. 2017 Jan;78(1):12-19. doi: 10.1055/s-0036-1584920. IF: 0,608
  7. G. Gulyas, E. Csosz, J. Prokisch, A. Javor, M. Mezes, M. Erdely3, K. Balogh, T. Janaky, Z. Szabo, A. Simon, L. Czegledi (2016) Effect of nano-sized, elemental selenium supplement on the proteome of chicken liver, Journal of Animal Physiology and Nutrition,22 FEB 2016, DOI: 10.1111/jpn.12459, IF: 1.406
  8. Gábor Hutóczki, László Bognár, Judit Tóth, Beáta Scholtz, Gábor Zahuczky, Zoltán Hanzély, Éva Csősz, Judit Reményi-Puskár, Gergő Kalló, Tibor Hortobágyi, Almos Klekner (2015) Effect of concomitant radiochemotherapy on invasion potential of glioblastoma, . Pathol Oncol Res. 2016 Jan;22(1):155-60. doi: 10.1007/s12253-015-9989-5. Epub 2015 Oct 9. IF: 1.855
  9. Álmos Klekner, Gábor Hutóczki, József Virga, Judit Reményi-Puskár, Judit Tóth, Beáta Scholtz, Éva Csősz, Gergő Kalló, László Steiner, Tibor Hortobágyi, László Bognár (2015)Expression pattern of invasion-related molecules in the peritumoral brain, Clin Neurol Neurosurg. 2015 Dec;139:138-43. doi: 10.1016/j.clineuro.2015.09.017. Epub 2015 Sep 26. IF: 1.127
  10. Gerardo Alvarado, Viktória Jeney, Attila Tóth, Éva Csősz, Gergő Kalló, Thanh An Huynh, Csaba Hajnal, Judit Kalász, Enikő T. Pásztor, István Édes, Magnus Gram, Bo Akerström, Ann Smith, John W. Eaton, György Balla, Zoltán Papp, József Balla (2015) Heme-induced contractile dysfunction in human cardiomyocytes caused by oxidant damage to thick filament proteins, Free Radical Biology and Medicine 2015 Dec;89:248-62. doi: 10.1016/j.freeradbiomed.2015.07.158. Epub 2015 Sep 25. IF: 5.736
  11. Gergő Kalló, Arunima Chatterjee, Márta Tóth, Éva Rajnavölgyi, Adrienne Csutak, József Tőzsér, Éva Csősz (2015) Relative quantification of human β-defensins by an SRM-based proteomics approach, Rapid Communications in Mass Spectrometry,29:1623–1631. IF: 2.253
  12. Eva Csosz, Gabriella Emri, Gergő Kalló, George Tsaprailis, József Tőzsér (2015) Highly abundant defense proteins in human sweat as revealed by targeted proteomics and label free quantification mass spectrometry. Journal of the European Academy of Dermatology and Venereology, 29(10):2024-2031. doi: 10.1111/jdv.13221. Epub 2015 Aug 25. IF:2,826
  13. Zsolt Torok, Tunde Peto, Eva Csosz, Edit Tukacs, Agnes M Molnar, Andras Berta, Jozsef Tozser, Andras Hajdu, Valeria Nagy, Balint Domokos, Adrienne Csutak (2014) Combined Methods for Diabetic Retinopathy Screening, Using Retina Photographs and Tear Fluid Proteomics Biomarkers. Journal of Diabetes Research. 501. IF: 2,164
  14. Csutak A., Török Z., Csősz É., Pető T. (2014) Látásmentő új szűrés. Term. Vil. 145, 207-210.
  15. Torok Z, Peto T, Csosz E, Tukacs E, Molnar A, Maros-Szabo Z, Berta A, Tozser J, Hajdu A, Nagy V, Domokos B, Csutak A. (2013) Tear fluid proteomics multimarkers for diabetic retinopathy screening. BMC Ophthalmol. 13:40. doi: 10.1186/1471-2415-13-40. IF: 1.075
  16. Palicz Z, Jenes A, Gáll T, Miszti-Blasius K, Kollár S, Kovács I, Emri M, Márián T, Leiter E, Pócsi I, Csősz E, Kalló G, Hegedűs C, Virág L, Csernoch L, Szentesi P. (2013) In vivo application of a small molecular weight antifungal protein of Penicillium chrysogenum (PAF). Toxicol Appl Pharmacol. 269:8-16. IF: 3.63
  17. Csősz E, Boross P, Csutak A, Berta A, Tóth F, Póliska S, Török Z, Tőzsér J. (2012)Quantitative analysis of proteins in the tear fluid of patients with diabetic retinopathy. J Proteomics. 75:2196-2204. IF: 4.088