Maija Hollmen
PhD, Doc.; Principal Investigator, Academy Research Fellow
maijal@utu.fi +358 29 450 4389 Tykistökatu 6 Turku : https://orcid.org/0000-0002-3250-7653(external) Hollmen Lab web page(external) |
Tumor Immunology; Immunotherapy; Macrophages; Breast Cancer; Antibodies
I got interested in the immunological aspect of cancer during my three-year postdoctoral training at ETH Zurich with professor Michael Detmar during the years 2011-2014. Before this I had already built extensive knowledge in cancer biology, epidermal growth factor receptor signaling and immunotherapy during my PhD studies with professor Klaus Elenius. These two periods have educated me to do trans-disciplinary research combining different methods and ideas together with good outcome. I am at the state of leading a small tumor immunology research group and building collaborations both nationally and internationally. The aim of my research is to always produce clinically relevant data that can be translated directly from bench to bedside. Therefore, a vital part of my research has been done in collaboration with clinicians and pharma companies.
Development of strategies targeting immunosuppressive cells, molecules and pathways with less toxicity and with more universal role in tumor progression is an unmet clinical need. Possibilities to control the presence of suppressive cells within tumors are key factors in opening new avenues to fight against cancer growth. This is highly important since efforts in re-activating immune responses against tumors solely by blocking T cell inhibitory molecules have not shown promise as a single therapy for the vast majority of patients.
Mechanisms regulating macrophage phenotype in the tumor microenvironment has emerged as a highly potential field in drug development. Moreover, definitive biomarkers indicative of immunotherapy treatment response and feasible assessment of the immunological changes of the tumor microenvironment during and after treatment are severely lacking.
Our research exploits a unique scavenger receptor Clever-1, expressed on a subpopulation of immunosuppressive macrophages, to alleviate tumor related inflammation and develop Clever-1 as a companion therapeutic, diagnostic, and prognostic biomarker to treat and identify patients under immunosuppression. This involves the use of in vivo tumor models and sophisticated immunological assays with cutting-edge technology and state-of-the-art imaging combined with fresh human cancer patient material to elucidate the function of Clever-1 in controlling macrophage mediated local and systemic immune responses. Our results potentially have a high impact in understanding the mechanism of macrophage-mediated immunosuppression in cancer and promoting anti-Clever-1 immunotherapy into clinical trials where it may have benefits in comparison with currently available immune activating drugs.
Lecturer in Molecular Medicine and Basic Immunology; Normal and Pathological Angiogenesis, Myeloid Leukocytes and Pattern Recognition
- Histological tumor necrosis predicts decreased survival after neoadjuvant chemotherapy in head and neck squamous cell carcinoma (2025)
- Oral OncologyJournal of Cardiothoracic and Vascular Anesthesia
- Patient-derived tumor explant models of tumor immune microenvironment reveal distinct and reproducible immunotherapy responses (2025)
- OncoImmunologyJTCVS Open
- 2025
- Nucleic Acids ResearchImmunity
- Anti-CTLA4 treatment reduces lymphedema risk potentially through a systemic expansion of the FOXP3+ Treg population (2024)
- Nature Communications
- Bexmarilimab Activates Human Tumor-Associated Macrophages to Support Adaptive Immune Responses in Interferon-Poor Immune Microenvironments (2024)
- Cancer Immunology Research
- Clinical landscape of macrophage-reprogramming cancer immunotherapies (2024)
- British Journal of Cancer
- Differential circulating cytokine profiles in acute coronary syndrome versus stable coronary artery disease (2024)
- Scientific Reports
- Distinct circulating cytokine levels in patients with angiography-proven coronary artery disease compared to disease-free controls (2024)
- International journal of cardiology : Cardiovascular risk and prevention
- Respiratory complex I regulates dendritic cell maturation in explant model of human tumor immune microenvironment (2024)
- Journal for Immunotherapy of Cancer
- The effect of exercise and disease status on mobilization of anti-tumorigenic and pro-tumorigenic immune cells in women with breast cancer (2024)
- Frontiers in Immunology
- Transcriptomic and spatial dissection of human ex vivo right atrial tissue reveals proinflammatory microvascular changes in ischemic heart disease (2024)
- Cell Reports Medicine
- Acute exercise mobilizes CD8(+) cytotoxic T cells and NK cells in lymphoma patients (2023)
- Frontiers in Physiology
- A form of inherited hyperferritinemia associated with bi-allelic pathogenic variants of STAB1 (2023)
- American Journal of Human Genetics
- Dimeric IgA specifically disables intracellular mutated oncodrivers (2023)
- Immunity
- Makrofagit älykkäästi mukaan syövän hoitoon (2023)
- Duodecim
- Mapping the lymphatic system across body scales and expertise domains: A report from the 2021 National Heart, Lung, and Blood Institute workshop at the Boston Lymphatic Symposium (2023)
- Frontiers in Physiology
- Polymorphism in interferon alpha/beta receptor contributes to glucocorticoid response and outcome of ARDS and COVID-19 (2023)
- Critical Care
- Prolonged Systemic Inflammatory Response Syndrome After Cardiac Surgery (2023)
- Risk of fluid accumulation after cardiac surgery (2023)
- Single-cell functional genomics reveals determinants of sensitivity and resistance to natural killer cells in blood cancers (2023)