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Proteomics refers to the comprehensive analysis of proteomes, the entire set of proteins present in an organism. The scientists in the research group of the same name are developing analytical methods with which biomolecules – predominantly proteins – can be assessed qualitatively and quantitatively.

© ISAS / Hannes Woidich

The researchers are looking not only at the structure of proteins, but also the dynamic changes that occur in them. The triggers for such changes are external influences (such as environmental factors), metabolic processes and communication processes in cells. These changes play a role in virtually all diseases – including cardiovascular disorders, cancer or diabetes.

The possibilities for applying proteomics analyses extend from fundamental research through to new developments for medical diagnostics. They make an important contribution to targeted diagnostics – for example in the form of proteins as target molecules (biomarkers) – and the individual treatment of patients. For instance, personalised therapeutic options make it possible to tailor treatment to individuals for some cancers. This requires knowledge of the genes, proteins and other molecules that are relevant for the type of cancer and the course of treatment. In order to find the molecular switches for the genesis or the course of a disease, the researchers are examining exactly where and how which (bio)molecule acts in the cell, how it is transported and what it binds to; in short, how that biological system works in its entirety.

Highlights

PhD Candidate (m/f/d)

7th February 2025

The Less the Better

If neutrophil granulocytes migrate into injured tissue, for example into the brain after a stroke, they can promote chronic inflammation and cause long-term damage. In order to analyze the functional dynamics of these immune cells, millions of them are needed. A group of researchers recently developed a method that enables mass spectrometric analysis with just 1,000 neutrophils.

Susmita Ghosh am Massenspektrometer.
26th November 2025

New Drug Candidates for the Treatment of Heart Failure

Researchers from North Rhine-Westphalia are working on a new therapeutic approach for the treatment of heart failure as part of the recently launched HI-FIVE project. They are developing active substances that specifically inhibit an important enzyme with the aim of closing gaps in the care of patients with heart failure.

30th March 2026

What are you doing at ISAS, Theresa?

Why do mice undergo ultrasound examinations of their hearts? What does a typical working day in the lab involve for a technical assistant in the HI-FIVE research project ? And what challenges does the job present? Theresa Pietz provides fascinating insights into her duties, motivations and experiences working with animals.

25th March 2026

Study with Heart: A Doctor Bridging Clinic & Laboratory

What is actually happening behind the scenes of a patient trial? Anna Ruzhyna is a clinical research associate who looks after participants with heart failure as part of the HI-FIVE project. She explains how her work helps to develop new therapeutic approaches for the treatment of heart failure.

11th March 2026

Laboratory Meets Clinic: Understanding Heart Function with Stem Cells

How can new therapeutic approaches for heart failure be developed more effectively? Stem cell research plays a central role in the HI-FIVE project. In this interview, PD Dr Anna Klinke (Herz- und Diabeteszentrum NRW) talks about her work between the lab and the clinic. She explains how the versatility of stem cells enables heart and vascular cells to be obtained from individual patients' blood and why this is an important step in investigating the specific effects of new active substances.

12th February 2026

What are you doing at ISAS, Kevin?

What changes take place in heart muscle cells when a left ventricular assist device is used? ISAS doctoral student Kevin Hau (28) is tackling this question by researching the consequences of heart attacks using various omics analyses.

Kevin Hau is wearing a white coat bearing the ISAS logo. He is standing next to a microscope in a laboratory. In the lower left corner of the image, a computer screen can be seen. Open on the monitor is a microscopic image of reddish tissue.
28th January 2026

New Perspectives for Heart Failure Therapy

How are new therapeutic approaches being developed to close the gap in the treatment of patients with heart failure? And what knowledge from clinical practice is crucial for this? Prof. Dr Tanja Rudolph provides insights into her daily work as a cardiologist and talks about her role in the translational research project HI-FIVE, and the future of cardiovascular disease therapy.

25th November 2025

What are you doing at ISAS, Nora?

Nora Pauly is writing her doctoral thesis on the consequences of heart attacks at the joint graduate college of Essen University Hospital and ISAS. With the bed-to-bench-to-bed principle, her work in basic research is closely linked to the everyday clinical practice of caring for heart attack patients.

8th September 2025

3 Questions for Susmita Ghosh

How does gut microbiota affect the immune system? Susmita Ghosh conducts research on proteins and immune cells at ISAS. In this interview, the biologist talks about her work and explains how gut flora and the immune system could affect the outcomes of a stroke.

Susmita Ghosh sitzt am ultrasensitiven Massenspektrometer und stellt eine Proben ein.
8th September 2025

Gut Flora & Stroke: How Microorganisms Influence Our Immune System

Which factors can activate immune cells after a stroke? This question was investigated by researchers at University Hospital Essen and ISAS. Their work focused on the gut microbiota.

29th August 2024

Protein interaction paralyses a young patient

Two mutations in the genetic material of a boy lead to the rare neuromuscular disease NEDHFBA. Investigations of the young patient's samples by researchers at Essen University Hospital and ISAS shed light on the previously unrecognized mechanisms behind the symptoms: Proteins influence the development of the rare disease.

Bild von Dr. Andreas Hentschel, Mitarbeiter in der Arbeitsgruppe Translationale Analytik.

Projects

New Research Training Group of Essen University Medical Centre & ISAS is Dedicated to Consequential Injury Following a Heart Attack

When blood starts flowing again after a heart attack, it can literally flood the affected heart muscle cells with oxygen and nutrients and thus cause secondary damage. The DFG-funded research training group ‘TCI repAMI’ at the University Hospital Essen and ISAS is investigating how immune cells, blood vessel cells and heart muscle cells interact in this process. Clinical and research experts are working together in tandem teams in eleven sub-projects to provide interdisciplinary training for a total of 33 doctoral students.

B2B-RARE – Bench to Bedside: Therapies for Individuals with Hereditary Muscle Disorders

An interdisciplinary consortium of researchers in North Rhine-Westphalia is dedicated to improving the quality of life of patients with neuromuscular diseases by developing new precision diagnostic and treatment methods. Their goal is to find suitable therapies for patients and bring these directly to their bedsides.

MikrobiomProCheck: New Approaches to Personalised Therapies for Inflammatory Bowel Disease

In the MicrobiomeProCheck project, researchers and medical professionals are investigating the role of the gut microbiome in inflammatory bowel disease. Based on these new insights, under the leadership of ISAS, the universities of Bonn, Bielefeld, and Duisburg-Essen, along with the companies Biofidus AG and Lead Discovery Center GmbH, will be developing optimised diagnostic methods and precision medicine therapies.

AI Assisted Imaging of Large Tissues

Researchers on the »Imaging of Large Tissues« project are developing a workflow to combine the various microscopy imaging methods and analytical, mass spectroscopy methods.

Optimising Anaemia Treatment for Patients with Chronic Kidney Disease (NephrESA)

In order to treat anaemia more effectively, researchers in the »NephrESA« project are developing a computer model which can be used to determine the risks and prognoses of the medication for each individual affected.

Team

Prof. Dr. Albert Sickmann

Chairman of the Board Department Head

Department: Bioanalytics

Research group: Proteomics

Portrait von Prof. Dr. Albert Sickmann.

Dr. Anastasia Alexandridou

Research Associate

Department: Bioanalytics

Research group: Proteomics

Ilka Deipenwisch

Research Associate

Department: Bioanalytics

Research group: Proteomics

Portrait von  Ilka Deipenwisch.

Kevin Hau

Research Associate

Department: Bioanalytics

Research group: Proteomics

Portrait von  Kevin Hau.

Dr. Andreas Hentschel

Research Associate

Department: Bioanalytics

Research group: Proteomics

Portrait von Dr. Andreas Hentschel.

Yu-Heng Hsieh

Research Associate

Department: Bioanalytics

Research group: Proteomics

Portrait von  Yu-Heng Hsieh.

Sara Lomuscio

Research Associate

Department: Bioanalytics

Research group: Proteomics

Portrait von  Sara Lomuscio.

Gina Piontek

Research Associate

Department: Bioanalytics

Research group: Proteomics

Portrait von  Gina Piontek.

Neele Rottmann

Technical Assistant

Department: Bioanalytics

Research group: Proteomics

Dr. Fiorella Solari

Research Associate

Department: Bioanalytics

Research group: Proteomics

Portrait von Dr. Fiorella Solari.