Kyba Lab/Experimental Tissue Regeneration Lab

Specific projects:

Regulation of satellite cell quiescence and self-renewal: Skeletal muscle has tremendous capacity for regeneration after injury, but does not normally experience significant turnover. Satellite cells, the stem cells for skeletal muscle, are therefore quiescent. We are investigating mechanisms of regulation that govern quiescence and self-renewal of satellite cells, with a long-term goal of applying these to cell therapies for muscle diseases.

DUX4 and FSHD: The genetic disease facioscapulohumeral muscular dystrophy is caused by mutations leading to inappropriate expression of the double homeodomain transcription factor, DUX4. We are investigating the molecular mechanisms by which DUX4 recognizes DNA, alters chromatin and activates transcription, and are actively engaged in a program to discover and develop small molecule inhibitors of DUX4 for the treatment of FSHD. We have also developed an animal model for FSHD based on regulated, titratable expression of DUX4 in skeletal muscle.

DUX4 and cancer: Translocations that insert DUX4 into the IgH locus cause childhood and adolescent B cell leukemia. We are investigating the molecular mechanism underlying the oncogenic activity of DUX4-IGH fusion proteins. In addition, CIC-DUX4 fusions lead to an aggressive pediatric sarcoma named CDS. We are investigating new approaches for treating CDS based on inhibition of DUX4 and its cofactors, p300 and CBP.

Repopulating hematopoietic stem cells from pluripotent stem cells: We established the first efficient system for doing this in the mouse model, but the field still has not been able to generate repopulating HSCs from human iPS cells in an efficient manner. We are investigating novel approaches to differentiation of pluripotent stem cells in an effort to enable bone marrow transplantation from iPS cells.

Postdoc, graduate and undergraduate student positions are available. Please contact Dr. Michael Kyba at kyba@umn.edu if you are interested in joining the group.

Co - Investigator

Darko Bosnakovski, DVM, PhD (Assistant Professor)

Postdocs:

Ahmed S. Shams, MD

Lab Manager:

Erik A. Toso, MS

Technician:

Ana Mitanoska

Undergraduates:

Madeline T. Chopp
Claire Dolan
Natalya Granitowski
Ben Anderson
Kendall Porter
Savannah Witschen
Julie Leibig
Brady Erlandson
Su Tin
Lauren Loppnow
Deeya Patel
Ashley K Bieniek
Sydney Peng
Salma Abusamrah
Mackenzie Molina
Rachel Passow
Persia Mirkazemi

Administrative Assistant:

Sarah Jutila Peterson juti0009@umn.edu

Bosnakovski D, Shams AS, Yuan C, da Silva MT, Ener ET, Baumann CW, Kyba M. (2020). "Transcriptional and cytopathological hallmarks of FSHD in chronic DUX4-expressing mice" J Clin Invest 103:2465-2477.

Kyba, M. (2020). "Replication of bone-marrow pathophysiology" Nat Biomed Eng 4:364-365.

Larson AA, Baumann CW, Kyba M, Lowe DA. (2020). "Oestradiol affects skeletal muscle mass, strength and satellite cells following repeated injuries" Exp Physiol 10: 1700-1707.

Bosnakovski D, da Silva MT, Sunny ST, Ener ET, Toso EA, Yuan C, Cui Z, Walters MA, Jadhav A, Kyba M, (2019) "A novel P300 inhibitor reverses DUX4-mediated global histone H3 hyperacetylation, target gene expression, and cell death" Science Advances 5: eaaw7781.

Collins BC, Arpke RW, Larson AA, Baumann CW, Xie N, Cabelka CA, Nash NL, Hanna-Kaarina J, Laakkonen EK, Sipilä S, Kovanen V, Spangenburg EE, Kyba M, Lowe DA. (2019) "Estrogen Regulates the Satellite Cell Compartment in Females" Cell Reports 28: 368-381

Chan SSK, Arpke RW, Filareto A, Xie N, Pappas MP, Penaloza JS, Perlingeiro RCR, Kyba M. (2018) "Skeletal muscle stem cells from PSC-derived teratomas have functional regenerative capacity" Cell Stem Cell 23:74-85

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