Maija Hollmen
PhD, Doc.; Principal Investigator, Academy Research Fellow
maijal@utu.fi +358 29 450 4389 Tykistökatu 6 Turku ORCID identifier: https://orcid.org/0000-0002-3250-7653 |
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
- Aberrant Circulating Levels of Purinergic Signaling Markers Are Associated With Several Key Aspects of Peripheral Atherosclerosis and Thrombosis (2015)
- Circulation Research
(A1 Refereed original research article in a scientific journal) - Blockade of VEGF-C and VEGF-D modulates adipose tissue inflammation and improves metabolic parameters under high-fat diet (2015)
- Molecular Metabolism
(A1 Refereed original research article in a scientific journal) - Characterization of macrophage - cancer cell crosstalk in estrogen receptor positive and triple-negative breast cancer (2015) Hollmen M, Roudnicky F, Karaman S, Detmar M
(A1 Refereed original research article in a scientific journal) - Drug Pharmacokinetics Determined by Real-Time Analysis of Mouse Breath (2015)
- Angewandte Chemie International Edition
(A1 Refereed original research article in a scientific journal) - Ecto-5'-nucleotidase/CD73 enhances endothelial barrier function and sprouting in blood but not lymphatic vasculature (2015)
- European Journal of Immunology
(A1 Refereed original research article in a scientific journal) - Clever-1/stabilin-1 controls cancer growth and metastasis (2014)
- Clinical Cancer Research
(A1 Refereed original research article in a scientific journal) - Fingerprinting Breast Cancer vs. Normal Mammary Cells by Mass Spectrometric Analysis of Volatiles (2014) He JJ, Sinues PML, Hollmen M, Li X, Detmar M, Zenobi R
(A1 Refereed original research article in a scientific journal) - Markers of purinergic signaling give new insight on vascular inflammation, thrombosis, tobacco smoke and peripheral artery disease (2014)
- Purinergic Signalling
(Other publication) - The Orphan Adhesion G Protein-coupled Receptor GPR97 Regulates Migration of Lymphatic Endothelial Cells via the Small GTPases RhoA and Cdc42 (2013)
- Journal of Biological Chemistry
(A1 Refereed original research article in a scientific journal) - Proteolytic Processing of ErbB4 in Breast Cancer (2012)
- PLoS ONE
(A1 Refereed original research article in a scientific journal) - Potential of ErbB4 antibodies for cancer therapy (2010)
- Future Oncology
(A1 Refereed original research article in a scientific journal) - Pim-1 Kinase Expression Predicts Radiation Response in Squamocellular Carcinoma of Head and Neck and Is under the Control of Epidermal Growth Factor Receptor (2009)
- Neoplasia
(A1 Refereed original research article in a scientific journal) - Somatic mutations of ErbB4: Selective loss-of-function phenotype affecting signal transduction pathways in cancer (2009)
- Journal of Biological Chemistry
(A1 Refereed original research article in a scientific journal) - Suppression of breast cancer growth by a monoclonal antibody specifically targeting cleavable ErbB4 isoforms. (2009) Hollmén M, Määttä JA, Bald L, Sliwkowski MX, Elenius K.
(A1 Refereed original research article in a scientific journal) - Amplification of HER-2 in gastric carcinoma: association with Topoisomerase II alpha gene amplification, intestinal type, poor prognosis and sensitivity to trastuzumab (2005)
- Annals of Oncology
(A1 Refereed original research article in a scientific journal)