The Centre of New Technologies, University of Warsaw invites to a seminar by
Professor Maksim Plikus
Department of Developmental, and Cell Biology, University of California Irvine, USA
Collective Cell Behaviors During Skin Regeneration
Date: 4th October 2024, Friday
Time: 12:00 pm (Central European Time)
Host: Professor Krzysztof Kobielak
The seminar will be in the CeNT aula hall (00.142) on the main floor.
Abstract:
Hair follicle is a prototypical model system for studying principles and mechanisms of stem cell control in the context of tissue growth and regeneration. Notably, each hair follicle grows in a highly stereotypical manner—the hair growth cycle, and on the entire skin, cyclical growth of many thousands of hair follicles is coordinated via a self-organized process, whose outcome are the so-called hair growth waves (Refs 1, 2). Periodic activation of epithelial stem cells is the critical pre-requisite of hair growth, and for this reason their activation status is tightly regulated by a number of paracrine signals emanating both from their immediate niche cells inside of the follicle (Ref 3), as well as from distantly positioned non-hair skin cells (Ref 4). Hair stem cells activate when the collective signaling input that they receive from all sources definitively reaches stable above- the-threshold level. In the lecture, current state of knowledge on the cellular and molecular components of the long-range niche signals that drive collective hair growth and their intersection with the bona fide hair follicle niche counterparts (Ref 3, 4) as well as the application of single cell bioinformatics to studying these tissue-level questions (Ref 5) will be discussed. Knowledge gleaned from studying collective growth by hair follicles in the skin can reveal general principles that likely operate in other tissues to achieve coordinated regeneration of their respective stem cell-rich units (Ref 6).
References:
1. Cyclic dermal BMP signalling regulates stem cell activation during hair regeneration (2008 Plikus MV, Mayer JA, de la Cruz D, Baker RE, Maini PK, Maxson R, Chuong CM. Nature, 451: 340 344
2. Self-organizing and stochastic behaviors during the regeneration of hair stem cells (2011). Plikus MV, Baker RE, Chen CC, Fare C, de la Cruz D, Andl T, Maini PK, Millar SE, Widelitz R, Chuong CM. Science, 332: 586-589
3. Hedgehog signaling reprograms hair follicle niche fibroblasts to a hyper-activated state (2022). Liu Y*, Guerrero-Juarez CF*, Xiao F, Shettigar NU, Ramos R, Kuan CH, Lin YC, Lomeli LdJM, Park JM, Oh JW, Liu R, Lin SJ, Tartaglia M, Yang RB, Yu Z, Nie Q, Li J#, Plikus MV# Developmental Cell, j.devcel.2022.06.005
4. Signalling by senescent melanocytes hyperactivates hair growth (2023). Wang X, Ramos R, Phan AQ, Yamaga K, Flesher JL, Jiang S, Oh JW, Jin S, Jahid S, Kuan CH, Nguyen TK, Liang HY, Shettigar NU, Hou R, Tran KH, Nguyen A, Vu KN, Phung JL, Ingal JP, Levitt KM, Cao X, Liu Y, Deng Z, Taguchi N, Scarfone VM, Wang G, Paolilli KN, Wang X, Guerrero-Juarez CF, Davis RT, Greenberg EN, Ruiz-Vega R, Vasudeva P, Murad R, Widyastuti LHP, Lee HL, McElwee KJ, Gadeau AP, Lawson DA, Andersen B, Mortazavi A, Yu Z, Nie Q, Kunisada T, Karin M, Tuckermann J, Esko JD, Ganesan AK, Li J, Plikus MV#. Nature, 618: 808-817
5. Inference and analysis of cell-cell communication using CellChat (2021). Jin S, Guerrero-Juarez CF, Zhang L, Chang I, Ramos R, Kuan C-H, Myung P, Plikus MV#, Nie Q#. Nature Communications, 12: 1088
1. Cyclic dermal BMP signalling regulates stem cell activation during hair regeneration (2008 Plikus MV, Mayer JA, de la Cruz D, Baker RE, Maini PK, Maxson R, Chuong CM. Nature, 451: 340 344
2. Self-organizing and stochastic behaviors during the regeneration of hair stem cells (2011). Plikus MV, Baker RE, Chen CC, Fare C, de la Cruz D, Andl T, Maini PK, Millar SE, Widelitz R, Chuong CM. Science, 332: 586-589
3. Hedgehog signaling reprograms hair follicle niche fibroblasts to a hyper-activated state (2022). Liu Y*, Guerrero-Juarez CF*, Xiao F, Shettigar NU, Ramos R, Kuan CH, Lin YC, Lomeli LdJM, Park JM, Oh JW, Liu R, Lin SJ, Tartaglia M, Yang RB, Yu Z, Nie Q, Li J#, Plikus MV# Developmental Cell, j.devcel.2022.06.005
4. Signalling by senescent melanocytes hyperactivates hair growth (2023). Wang X, Ramos R, Phan AQ, Yamaga K, Flesher JL, Jiang S, Oh JW, Jin S, Jahid S, Kuan CH, Nguyen TK, Liang HY, Shettigar NU, Hou R, Tran KH, Nguyen A, Vu KN, Phung JL, Ingal JP, Levitt KM, Cao X, Liu Y, Deng Z, Taguchi N, Scarfone VM, Wang G, Paolilli KN, Wang X, Guerrero-Juarez CF, Davis RT, Greenberg EN, Ruiz-Vega R, Vasudeva P, Murad R, Widyastuti LHP, Lee HL, McElwee KJ, Gadeau AP, Lawson DA, Andersen B, Mortazavi A, Yu Z, Nie Q, Kunisada T, Karin M, Tuckermann J, Esko JD, Ganesan AK, Li J, Plikus MV#. Nature, 618: 808-817
5. Inference and analysis of cell-cell communication using CellChat (2021). Jin S, Guerrero-Juarez CF, Zhang L, Chang I, Ramos R, Kuan C-H, Myung P, Plikus MV#, Nie Q#. Nature Communications, 12: 1088
