Proteomics subtyping and circadian dynamics of PDACs to develop novel therapeutic strategies
email@example.com(link sends e-mail)
Homepage(link is external)
Life on earth imposes daily rhythms of environmental conditions such as light-dark and temperature cycles. Organisms evolved an endogenous timing system, the circadian clock that anticipates daily variations to optimize metabolism and physiology in a daily manner. Circadian clocks are self-sustainable and cell autonomous present in virtually every cell in the organism. On the molecular level, rhythms are generated by interconnected transcriptional and translational feedback loops that drive cycles of transcription, translation, protein and post-translational modification abundance. In mammals, circadian asynchrony contributes to pathological conditions such as obesity and cancer. However, to date it is not known how circadian clocks are linked to cancer progression and to what extent circadian rhythms in cancer cells or their environment can be used to tailor optimized timing across the day for therapeutic interventions (chronotherapy).
We recently discovered that certain kinases with oncogenic potential in pancreatic cancer are regulated by circadian clocks in healthy tissues, therefore this project ultimately aims to understand the interplay between circadian rhythms, kinase activities and signalling outputs in pancreatic cancer by using quantitative mass spectrometry-based proteomics and phosphoproteomics. As a first step, we used this methodology to identify metabolic pathways and signalling networks activated in a context-dependent manner in murine PDAC models driven by oncogenic KrasG12D, KrasG12D/Trp53R172H, BrafV637E and Pik3CAH1047R. Unexpectedly, we found that even close genetic backgrounds display strong divergent proteome and phosphoproteome signatures. We will study here how these context-specific activated signalling pathways crosstalk to the endogenous circadian clock in murine PDAC cell lines and tumors. Our preliminary data show that a functional clock can be retained in PDAC cell lines driven by different oncogenes. Using genetic loss of function approaches we will study how cancer progression is modulated by the presence of an endogenous clock in PDAC tumors but also by rhythmic systemic signals. We will employ proteomics and phosphoproteomics to further characterize temporally regulated signalling pathways and active kinases in those tumors that could be used as novel targets.
The long term goal will be to define the optimal timing for the delivery of drugs ensuring maximal efficiency while reducing toxicity.
Perseus plugin "Metis" for metabolic-pathway-centered quantitative multi-omics data analysis for static and time-series experimental designs
Hamzeiy, H., Ferretti, D., Robles, M. S., and Cox, J. (2022). Cell Rep Methods 2, 100198. doi: 10.1016/j.crmeth.2022.100198
Indirect targeting of MYC sensitizes pancreatic cancer cells to mechanistic target of rapamycin (mTOR) inhibition
Schneeweis, C., Hassan, Z., Ascherl, K., Wirth, M., Koutsouli, S., Orben, F., Krauss, L., Schneider, C., Ollinger, R., Kramer, O. H., Rad, R., Reichert, M., Robles, M. S., Saur, D., and Schneider, G. (2022). Cancer Commun (Lond) 42, 360-364. doi: 10.1002/cac2.12280
Selective multi-kinase inhibition sensitizes mesenchymal pancreatic cancer to immune checkpoint blockade by remodeling the tumor microenvironment
Falcomata, C., Barthel, S., Widholz, S. A., Schneeweis, C., Montero, J. J., Toska, A., Mir, J., Kaltenbacher, T., Heetmeyer, J., Swietlik, J. J., Cheng, J. Y., Teodorescu, B., Reichert, O., Schmitt, C., Grabichler, K., Coluccio, A., Boniolo, F., Veltkamp, C., Zukowska, M., Vargas, A. A., Paik, W. H., Jesinghaus, M., Steiger, K., Maresch, R., Ollinger, R., Ammon, T., Baranov, O., Robles, M. S., Rechenberger, J., Kuster, B., Meissner, F., Reichert, M., Flossdorf, M., Rad, R., Schmidt-Supprian, M., Schneider, G., and Saur, D. (2022). Nat Cancer 3, 318-336. doi: 10.1038/s43018-021-00326-1
Falcomata, C., Barthel, S., Ulrich, A., Diersch, S., Veltkamp, C., Rad, L., Boniolo, F., Solar, M., Steiger, K., Seidler, B., Zukowska, M., Madej, J., Wang, M., Ollinger, R., Maresch, R., Barenboim, M., Eser, S., Tschurtschenthaler, M., Mehrabi, A., Roessler, S., Goeppert, B., Kind, A., Schnieke, A., Robles, M. S., Bradley, A., Schmid, R. M., Schmidt-Supprian, M., Reichert, M., Weichert, W., Sansom, O. J., Morton, J. P., Rad, R., Schneider, G., and Saur, D. (2021). Cancer Discov 11, 3158-3177. doi: 10.1158/2159-8290.CD-21-0209
Data-independent acquisition method for ubiquitinome analysis reveals regulation of circadian biology
Hansen, F. M., Tanzer, M. C., Bruning, F., Bludau, I., Stafford, C., Schulman, B. A., Robles, M. S., Karayel, O., and Mann, M. (2021). Nat Commun 12, 254. doi: 10.1038/s41467-020-20509-1
Bruning, F., Noya, S. B., Bange, T., Koutsouli, S., Rudolph, J. D., Tyagarajan, S. K., Cox, J., Mann, M., Brown, S. A., and Robles, M. S. (2019). Science 366. doi: 10.1126/science.aav3617
Noya, S. B., Colameo, D., Bruning, F., Spinnler, A., Mircsof, D., Opitz, L., Mann, M., Tyagarajan, S. K., Robles, M. S., and Brown, S. A. (2019). Science 366. doi: 10.1126/science.aav2642
Harpprecht, L., Baldi, S., Schauer, T., Schmidt, A., Bange, T., Robles, M. S., Kremmer, E., Imhof, A., and Becker, P. B. (2019). A Drosophila cell-free system that senses DNA breaks and triggers phosphorylation signalling. Nucleic Acids Res 47, 7444-7459. doi: 10.1093/nar/gkz473
Robles, M. S., Humphrey, S. J., and Mann, M. (2017). Cell Metabolism 25, 118-127. doi: 10.1016/j.cmet.2016.10.004
In-vivo quantitative proteomics reveals a key contribution of post-transcriptional mechanisms to the circadian regulation of liver metabolism
Robles, M. S., Cox, J., and Mann, M. (2014). PLoS Genet 10, e1004047. doi: 10.1371/journal.pgen.1004047