Sten Eirik W. Jacobsen's group

Unraveling normal and malignant hematopoietic stem and progenitor cell biology at the single cell level

Sten Eirik Jacobsen, PhD, Professor in Regenerative Medicine, Senior Physician, Department of Medicine, Huddinge, and Department of Cell and Molecular Biology, Karolinska Institutet, in front of Aula Medica, Campus Solna August 2014. Photo: Ulf Sirborn

Establishing the normal lineage commitment pathways from hematopoietic stem cells to lineage-restricted progenitors remains an important goal towards unravelling the regulation of blood lineage development, and how this is perturbed in hematological malignancies.

The Jacobsen Lab has for more than a decade had a focus on establishing key lineage commitment/restriction steps and blood lineage pathways in normal hematopoiesis (Adolfsson Cell 2005; Boiers Cell Stem Cell 2013; Sanjuan-Pla Nature 2013; Luis Nature Immunology 2016; Drissen Nature Immunology 2016; Carrelha Nature 2018). Distinct cancer stem cells (CSCs) might underlie relapses after complete remissions. The Jacobsen Lab has identified and characterized distinct and rare candidate CSCs and their therapeutic resistance in the chronic hematological malignancies myelodysplastic syndromes (MDS; Tehranchi New Engl J Med 2010; Woll Cancer Cell 2014) and myeloproliferative neoplasms (Mead N Engl J Med 2012; Giustacchini Nature Medicine 2017).

The current focus of the research program of the Jacobsen lab is to apply different genetic tools and functional as well as molecular single cell analysis to unravel the dynamics of stem and progenitor cells in unperturbed hematopoiesis as well as in response to distinct challenges, in mice as well as in normal human subjects. We also model the impact of recurrent genetic lesions at distinct stages of hematopoietic lineage commitment, to identify key cellular targets and molecular events in the transformation from normal to malignant hematopoiesis. In parallel we track the cellular fate and genetic evolution of clonal hematopoiesis in normal individuals as well as pre-leukemic and leukemic stem cells in patients during the natural course of hematopoietic malignancies and following treatment. Through these research directions we aim to identify novel therapeutic strategies towards regenerative hematopoiesis and targeting of leukemic stem cells.

The Jacobsen Group’s research program is in part pursued in his laboratory at the Karolinska Institute, Sweden at the Center for Hematology and Regenerative Medicine, Department of Medicine Huddinge and at Haematopoietic Stem Cell Biology Laboratory, MRC Molecular HaematolgyUnit, Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine University of Oxford, Oxford, UK.

Group Members

Sten Eirik W. Jacobsen, M.D. Ph.D., Professor, Group Leader

Dimitra Vasileiadi, M.Sc., Research Administrator/ Personal Assistant

Ellen Markljung, Ph.D., Senior Lab Manager

Kari Högstrand, Ph.D., Senior Lab Manager

Amy Hillen, M.Sc., Research Technician

Marios Dimitriou, Associated assistant professor

Masafumi Seki, M.D., Post doc

Tetsuichi Yoshizato, M.D., Post doc

Stefania Mazzi, Post doc

Karin Belander-Strålin, M.D., Ph.D. student

Warren Kretzschmar, Post doc

Edwin Chari, M.Sc., Research technician

Hisashi Ishida, M.D., Post doc

 

Selected publications

Link to all publications (PubMed)

Hierarchically related lineage-restricted fates of multipotent haematopoietic stem cells.
Carrelha J, Meng Y, Kettyle LM, Luis TC, Norfo R, Alcolea V, et al
Nature 2018 02;554(7690):106-111

Ezh2 and Runx1 Mutations Collaborate to Initiate Lympho-Myeloid Leukemia in Early Thymic Progenitors.
Booth CAG, Barkas N, Neo WH, Boukarabila H, Soilleux EJ, Giotopoulos G, et al
Cancer Cell 2018 02;33(2):274-291.e8

Single-cell transcriptomics uncovers distinct molecular signatures of stem cells in chronic myeloid leukemia.
Giustacchini A, Thongjuea S, Barkas N, Woll PS, Povinelli BJ, Booth CAG, et al
Nat. Med. 2017 Jun;23(6):692-702

Initial seeding of the embryonic thymus by immune-restricted lympho-myeloid progenitors.
Luis TC, Luc S, Mizukami T, Boukarabila H, Thongjuea S, Woll PS, et al
Nat. Immunol. 2016 Dec;17(12):1424-1435

Persistent malignant stem cells in del(5q) myelodysplasia in remission.
Tehranchi R, Woll PS, Anderson K, Buza-Vidas N, Mizukami T, Mead AJ, et al
N Engl J Med 2010 Sep;363(11):1025-37