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A01 - Proteolytic control of mitochondrial dynamics and cell survival by OMA1

Thomas Langer
Max Planck Institute for Biology of Ageing,
Cologne

E-mail: tlangerSpamProtectionage.mpg.de
For more information and contact please visit the LANGER LAB.


Abstract

The project aims to define the role of the stress-activated peptidase OMA1 in the regulation of mitochondrial dynamics and function in response to stress and different metabolic demands. The project combines multiple proteomic approaches and experiments in cultured cells with in vivo approaches in mouse to unravel how OMA1 regulates the stress response of mitochondria and cell survival and to uncover novel functions of OMA1 within mitochondria.

Project-relevant publications

MacVicar, T., Ohba, Y., Nolte, H., Mayer, F., Tatsuta, T., Sprenger, H.G., Lindner, B., Zhao, Y., Li, J., Bruns, C., Krüger, M., Habich, M., Riemer, J., Schwarzer, R., Pasparakis, M., Henschke, S., Brüning, J., Zamboni, N. and Langer, T. (2019). Lipid signalling drives proteolytic rewiring of mitochondria by YME1L. Nature 575 , 361-365.

Murru, S., Hess, S., Barth, E., Almajan, E.R., Schatton, D., Hermans, S., Brodesser, S., Langer, T., Kloppenburg, P., Rugarli, E.I. (2019). Astrocyte-specific deletion of the mitochondrial m-AAA protease reveals glial contribution to neurodegeneration. GLIA 67, 1526-1541.

Sprenger, H.G. and Langer, T. (2019). The good and the bad of mitochondrial breakups. Trends Cell Biol. 29, 888-900. doi: 10.1016/j.tcb.2019.08.003. [Epub ahead of print].

Richter, F., Dennerlein, S., Nikolov, M., Jans, D., Naumenko, N., Aich, A., MacVicar, T., Linden, A., Jakobs, S., Urlaub, H., Langer, T. and Rehling, P. (2019). ROMO1 is a constituent of the human presequence translocase required for YME1L protease import. J. Cell Biol. 218, 598-614.

Sprenger, H.G., Wani, G., Hesseling, A., König, T., Patron, M., MacVicar, T., Ahola, S., Wai, T., Barth, E., Rugarli, E.I., Bergami, M., Langer, T. (2018). Loss of the mitochondrial i‐AAA protease YME1L leads to ocular dysfunction and spinal axonopathy. EMBO Mol Med. pii: e9288. doi: 10.15252/emmm.201809288. [Epub ahead of print]

Saita, S., Nolte, H., Fiedler, K.U., Kashkar, H., Venne, A.S., Zahedi, R.P., Krüger, M., and Langer, T. (2017). PARL mediates Smac proteolytic maturation in mitochondria to promote apoptosis. Nat Cell Biol. 19, 318-328.

MacVicar, T. and Langer, T. (2016). OPA1 processing in cell death and disease: the long and short of it. J. Cell Sci. 129, 2297-2306.

Korwitz, A., Merkwirth, C., Richter-Dennerlein, R., Tröder, S.E., Sprenger, H.-G., Qui­ros, P.M., López-Otín, C., Rugarli, E.I., and Langer, T. (2016). Loss of OMA1 delays neurodegeneration by preventing stress-induced OPA1 processing in mitochondria. J. Cell Biol. 212, 157-166.

Wang, S., Jacquemyn, J., Murru, S., Martinelli, P., Barth, E., Langer, T., Niessen, C.M., and Rugarli, E.I. (2016). The mitochondrial m-AAA protease prevents demyelination and hair greying. PLoS Genet 12, e1006463.

Wai, T., García-Prieto, J., Baker, M.J., Merkwirth, C., Benit, P., Rustin, P., Rupérez, F.J., Barbas, C., Ibañez, B.*, and Langer, T.* (2015). Imbalanced OPA1 processing and mitochondrial fragmentation causes heart failure in mice. Science 350, 1221-1233. *shared senior authorship.

Baker, M.J., Lampe, P.A., Stojanovski, D., Korwitz, A., Anand, R., Tatsuta, T., and Langer, T. (2014). Stress-induced OMA1 activation and autocatalytic turnover regulate OPA1-dependent mitochondrial dynamics. EMBO J. 33, 578-593.

Anand, R., Wai, T., Baker, M.J., Kladt, N., Schauss, A.C., Rugarli, E.I., and Langer, T. (2014). The i-AAA protease YME1L and OMA1 cleave OPA1 to balance mitochondrial fusion and fission. J. Cell Biol. 204, 919-929.