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  1. Article

    Open Access

    Olfactomedin-4 improves cutaneous wound healing by promoting skin cell proliferation and migration through POU5F1/OCT4 and ESR1 signalling cascades

    Olfactomedin-4 (OLFM4) is an olfactomedin-domain-containing glycoprotein, which regulates cell adhesion, proliferation, gastrointestinal inflammation, innate immunity and cancer metastasis. In the present stud...

    Mariliis Klaas, Kristina Mäemets-Allas in Cellular and Molecular Life Sciences (2022)

  2. Article

    Open Access

    Long-term maintenance of functional primary human hepatocytes in 3D gelatin matrices produced by solution blow spinning

    Solution blow spinning (SBS) has recently emerged as a novel method that can produce nano- and microfiber structures suitable for tissue engineering. Gelatin is an excellent precursor for SBS as it is derived ...

    Mariliis Klaas, Kaidi Möll, Kristina Mäemets-Allas, Mart Loog in Scientific Reports (2021)

  3. No Access

    Article

    A human preadipocyte cell strain with multipotent differentiation capability as an in vitro model for adipogenesis

    Murine 3T3 cell lines constitute a standard model system for in vitro study of mammalian adipogenesis although they do not faithfully reflect the biology of the human adipose cells. Several human adipose cell ...

    Claudia G. Cárdenas-León in In Vitro Cellular & Developmental Biology … (2020)

  4. Article

    Open Access

    Hyperproliferation is the main driver of metabolomic changes in psoriasis lesional skin

    Systematic understanding of the metabolite signature of diseases may lead to a closer understanding of the disease pathogenesis and ultimately to the development of novel therapies and diagnostic tools. Here w...

    Liis Pohla, Aigar Ottas, Bret Kaldvee, Kristi Abram, Ursel Soomets in Scientific Reports (2020)

  5. Article

    Open Access

    Discovery of increased epidermal DNAH10 expression after regeneration of dermis in a randomized with-in person trial — reflections on psoriatic inflammation

    Because molecular memories of past inflammatory events can persist in epidermal cells, we evaluated the long-term epidermal protein expression landscapes after dermal regeneration and in psoriatic inflammation...

    Heli Lagus, Mariliis Klaas, Susanna Juteau, Outi Elomaa, Juha Kere in Scientific Reports (2019)

  6. Article

    Open Access

    A label-retaining but unipotent cell population resides in biliary compartment of mammalian liver

    Cells with slow proliferation kinetics that retain the nuclear label over long time periods–the label-retaining cells (LRCs)–represent multipotent stem cells in a number of adult tissues. Since the identity of...

    Janeli Viil, Mariliis Klaas, Kadri Valter, Denis Belitškin in Scientific Reports (2017)

  7. Article

    Open Access

    The alterations in the extracellular matrix composition guide the repair of damaged liver tissue

    While the cellular mechanisms of liver regeneration have been thoroughly studied, the role of extracellular matrix (ECM) in liver regeneration is still poorly understood. We utilized a proteomics-based approac...

    Mariliis Klaas, Triin Kangur, Janeli Viil, Kristina Mäemets-Allas in Scientific Reports (2016)

  8. No Access

    Protocol

    Isolation and Fluorescence-Activated Cell Sorting of Mouse Keratinocytes Expressing β-Galactosidase

    During the past decade, the rapid development of new transgenic and knock-in mouse models has propelled epidermal stem-cell research into “fast-forward mode”. It has become possible to identify and visualize d...

    Maria Kasper, Rune Toftgård, Viljar Jaks in Multipotent Stem Cells of the Hair Follicle (2016)

  9. Article

    Open Access

    Laminin-rich blood vessels display activated growth factor signaling and act as the proliferation centers in Dupuytren’s contracture

    Dupuytren’s contracture (DC) is a chronic fibroproliferative disease of the hand, which is characterized by uncontrolled proliferation of atypical myofibroblasts at the cellular level. We hypothesized that spe...

    Janeli Viil, Katre Maasalu, Kristina Mäemets-Allas in Arthritis Research & Therapy (2015)

  10. No Access

    Article

    Fibroblast growth on micro- and nanopatterned surfaces prepared by a novel sol–gel phase separation method

    Physical characteristics of the growth substrate including nano- and microstructure play crucial role in determining the behaviour of the cells in a given biological context. To test the effect of varying the ...

    Paula Reemann, Triin Kangur, Martin Pook in Journal of Materials Science: Materials in… (2013)

  11. No Access

    Article

    Lgr5 marks cycling, yet long-lived, hair follicle stem cells

    Rune Toftgård and colleagues report that Lgr5, a G protein-coupled receptor recently identified as a marker of intestinal stem cells, marks a population of hair follicle stem cells that is actively proliferati...

    Viljar Jaks, Nick Barker, Maria Kasper, Johan H van Es, Hugo J Snippert in Nature Genetics (2008)

  12. No Access

    Article

    p53-dependent transcription can exhibit both on/off and graded response after genotoxic stress

    The p53 protein is a central player in cellular response to DNA damage. Induction of p53 by DNA-damaging agents involves elevation of its steady-state level and activation of its potency as a transcription fac...

    Arvi Jõers, Viljar Jaks, Johanna Kase, Toivo Maimets in Oncogene (2004)

  13. No Access

    Article

    p53 protein accumulation in addition to the transactivation activity is required for p53-dependent cell cycle arrest after treatment of cells with camptothecin

    In this study we characterize the connections between p53-dependent G1 cell cycle arrest, transcriptional activation of the protein and the increase of its intracellular steady-state concentration. Several cel...

    Viljar Jaks, Arvi Jõers, Arnold Kristjuhan, Toivo Maimets in Oncogene (2001)

  14. No Access

    Article

    Oligomerization of p53 is necessary to inhibit its transcriptional transactivation property at high protein concentration

    We have previously shown that transactivation by tumor suppressor protein p53 can be inhibited in vivo at elevated protein concentrations. In this study we characterize the structural requirements of this functio...

    Arnold Kristjuhan, Viljar Jaks, Ilvi Rimm, Tiia Tooming, Toivo Maimets in Oncogene (1998)