bioRxiv preprint doi: https://doi.org/10.1101/666750; this version posted June 11, 2019. The copyright holder for this preprint (which was not 6/10/2019 certified by peerRab11b-mediated review) is the integrinauthor/funder. recycling All promotes rights reserved. brain metastatic No reuse adaptation allowed and without outgrowth permission. - Google Docs Rab11bmediated integrin recycling promotes brain metastatic adaptation and outgrowth Erin N. Howe 1, 2 , Miranda D. Burnette 2,3,8 , Melanie E. Justice 2,4 , James W. Clancy 1 , Ian H. Guldner 1,2 , Patricia M. Schnepp 1, 2, 9 , Victoria Hendrick 5 , Uma K. Aryal 5 , Alicia T. Specht 2,6, , Jun Li 2,6 , Crislyn D’SouzaSchorey 1,2 , Jeremiah Z. Zartman 2,3 , and Siyuan Zhang 1, 2, 7, * Affiliations: 1. Department of Biological Sciences, University of Notre Dame, Notre Dame, IN, USA 2. Mike and Josie Harper Cancer Research Institute, University of Notre Dame, 1234 N. Notre Dame Avenue, South Bend, IN, USA 3. Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN, USA 4. Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, USA 5. Purdue Proteomics Facility, Bindley Bioscience Center, Discovery Park, Purdue University, West Lafayette, IN, USA 6. Department of Applied and Computational Mathematics and Statistics, University of Notre Dame, Notre Dame, IN, USA 7. Indiana University Melvin and Bren Simon Cancer Center, Indianapolis, IN, USA 8. Present address: Organogenesis, Birmingham, AL, USA 9. Present address: Department of Urology, University of Michigan Medical School, Ann Arbor, MI, USA * Correspondence:
[email protected] Manuscript Summary: Rab11b upregulation in the brain microenvironment promotes recycling of cargo proteins required for breast cancer brain metastasis, including increased surface expression of integrin β1, which allows brain extracellular matrix attachment and mechanotransduction.