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Research focus of Subarea 1.

Subarea 1: Stem Cell Aging

The individual research groups within Subarea 1 investigate the causes and consequences of stem cell aging. The research work spans from basic model organisms over genetic mouse models up to humanized mouse models engrafted with human stem cells.

According to the FLI, with the closure of two groups since 2016 the representation of invertebrate models of stem cell research was reduced in Subarea 1. The institute presumes that the recruitment of new groups should fill this gap.

The research is defined by four focus areas:

  • Cell-intrinsic mechanisms limiting the function of aging stem and progenitor cells,
  • Aging-associated alterations of stem cell niches and the systemic environment,
  • Mechanisms of clonal selection and epigenetic drifts in stem cell aging, and
  • Microbiota- and metabolism-induced impairments in stem cell function during aging (in context of the new focus area Microbiota and Aging currently being built up within Subarea 2).

Research focus of Subarea 1.

a) It is currently not well understood what mechanisms impair cellular functions in aging. b) The relative contribution of niche cells and systemic acting factors on stem cell aging have yet to be determined in different tissues. c) Clonal expansion of mutant cells associates with disease development in aging humans. Mechanistically, the process remains poorly understood. Changes in color intensity depict clonal dominance originating from stem (green) or progenitor cells (gray). d) Emerging evidences indicate that aging associated alterations in microbiota influence stem cell function and vice versa.

Publications

(since 2016)

2017

  • Hoxa9 activation by epigenetic alterations in aging muscle stem cells induces developmental signals impairing regeneration of aging muscle
    Schwörer S
    Dissertation 2017, Jena, Germany
  • Wnt activity and basal niche position sensitize intestinal stem and progenitor cells to DNA damage.
    Tao S, Tang D, Morita Y, Sperka T, Omrani O, Lechel A, Sakk V, Kraus J, Kestler HA, Kühl M, Rudolph KL
    EMBO J 2017, 36(19), 2920-1 Erratum for EMBO J 2015 volume 34 page 624
  • Synergistic killing of FLT3ITD-positive AML cells by combined inhibition of tyrosine-kinase activity and N-glycosylation.
    Tsitsipatis D, Jayavelu AK, Müller JP, Bauer R, Schmidt-Arras D, Mahboobi S, Schnöder TM, Heidel F, Böhmer FD
    Oncotarget 2017, 8(16), 26613-24
  • Nicotinamide adenine dinucleotide replenishment rescues colon degeneration in aged mice.
    Zhu X, Shen W, Wang Y, Jaiswal A, Ju Z, Sheng Q
    Signal Transduct Target Ther 2017, 2, 17017

2016

  • Xpg limits the expansion of haematopoietic stem and progenitor cells after ionising radiation.
    Avila AI, Illing A, Becker F, Maerz LD, Morita Y, Philipp M, Burkhalter MD
    Nucleic Acids Res 2016, 44(13), 6252-61
  • Metabolic regulation of stem cell function in tissue homeostasis and organismal ageing.
    Chandel NS, Jasper H, Ho TT, Passegué E
    Nat Cell Biol 2016, 18(8), 823-32
  • You Are What You Eat: Linking High-Fat Diet to Stem Cell Dysfunction and Tumorigenesis.
    Haller S, Jasper H
    Cell Stem Cell 2016, 18(5), 564-6
  • Gene Dosage Reductions of Trf1 and/or Tin2 Induce Telomere DNA Damage and Lymphoma Formation in Aging Mice.
    Hartmann K, Illing A, Leithäuser F, Baisantry A, Quintanilla-Fend L, Rudolph KL
    Leukemia 2016, 30(3), 749-53
  • Wnt/β-catenin signaling via Axin2 is required for myogenesis and, together with YAP/Taz and Tead1, active in IIa/IIx muscle fibers.
    Huraskin D, Eiber N, Reichel M, Zidek LM, Kravic B, Bernkopf D, von Maltzahn J, Behrens J, Hashemolhosseini S
    Development 2016, 143(17), 3128-42
  • Telomere shortening leads to earlier age of onset in ALS mice.
    Linkus B, Wiesner D, Meßner M, Karabatsiakis A, Scheffold A, Rudolph KL, Thal DR, Weishaupt JH, Ludolph AC, Danzer KM
    Aging (Albany NY) 2016, 8(2), 382-93