PMID- 22932871 OWN - NLM STAT- MEDLINE DCOM- 20121210 LR - 20220321 IS - 1091-6490 (Electronic) IS - 0027-8424 (Print) IS - 0027-8424 (Linking) VI - 109 IP - 38 DP - 2012 Sep 18 TI - Causes, consequences, and remedies for growth-induced solid stress in murine and human tumors. PG - 15101-8 AB - The presence of growth-induced solid stresses in tumors has been suspected for some time, but these stresses were largely estimated using mathematical models. Solid stresses can deform the surrounding tissues and compress intratumoral lymphatic and blood vessels. Compression of lymphatic vessels elevates interstitial fluid pressure, whereas compression of blood vessels reduces blood flow. Reduced blood flow, in turn, leads to hypoxia, which promotes tumor progression, immunosuppression, inflammation, invasion, and metastasis and lowers the efficacy of chemo-, radio-, and immunotherapies. Thus, strategies designed to alleviate solid stress have the potential to improve cancer treatment. However, a lack of methods for measuring solid stress has hindered the development of solid stress-alleviating drugs. Here, we present a simple technique to estimate the growth-induced solid stress accumulated within animal and human tumors, and we show that this stress can be reduced by depleting cancer cells, fibroblasts, collagen, and/or hyaluronan, resulting in improved tumor perfusion. Furthermore, we show that therapeutic depletion of carcinoma-associated fibroblasts with an inhibitor of the sonic hedgehog pathway reduces solid stress, decompresses blood and lymphatic vessels, and increases perfusion. In addition to providing insights into the mechanopathology of tumors, our approach can serve as a rapid screen for stress-reducing and perfusion-enhancing drugs. FAU - Stylianopoulos, Triantafyllos AU - Stylianopoulos T AD - Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA. FAU - Martin, John D AU - Martin JD FAU - Chauhan, Vikash P AU - Chauhan VP FAU - Jain, Saloni R AU - Jain SR FAU - Diop-Frimpong, Benjamin AU - Diop-Frimpong B FAU - Bardeesy, Nabeel AU - Bardeesy N FAU - Smith, Barbara L AU - Smith BL FAU - Ferrone, Cristina R AU - Ferrone CR FAU - Hornicek, Francis J AU - Hornicek FJ FAU - Boucher, Yves AU - Boucher Y FAU - Munn, Lance L AU - Munn LL FAU - Jain, Rakesh K AU - Jain RK LA - eng GR - R01 CA126642/CA/NCI NIH HHS/United States GR - P01 CA117969/CA/NCI NIH HHS/United States GR - P01 CA080124/CA/NCI NIH HHS/United States GR - R01CA126642/CA/NCI NIH HHS/United States GR - P01CA080124/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20120829 PL - United States TA - Proc Natl Acad Sci U S A JT - Proceedings of the National Academy of Sciences of the United States of America JID - 7505876 RN - 9004-61-9 (Hyaluronic Acid) RN - 9007-34-5 (Collagen) SB - IM MH - Adenocarcinoma/*pathology MH - Animals MH - Blood Vessels/pathology MH - Collagen/chemistry MH - Female MH - Fibroblasts/pathology MH - Humans MH - Hyaluronic Acid/chemistry MH - Hypoxia MH - Immunotherapy/methods MH - Mice MH - Mice, SCID MH - Models, Theoretical MH - Neoplasm Transplantation MH - Neoplasms/pathology MH - Pancreatic Ducts/*pathology MH - Pancreatic Neoplasms/*pathology MH - Stress, Mechanical MH - Stromal Cells/cytology PMC - PMC3458380 COIS- Conflict of interest statement: R.K.J. received research grants from Dyax, MedImmune, and Roche; received consultant fees from Dyax, Enlight, Noxxon, and SynDevRx; owns equity in Enlight, SynDevRx, and XTuit; and serves on the Board of Directors of XTuit and Board of Trustees of H&Q Healthcare Investors and H&Q Life Sciences Investors. No reagents or funding from these companies were used in these studies. Therefore, there is no significant financial or other competing interest in the work. EDAT- 2012/08/31 06:00 MHDA- 2012/12/12 06:00 PMCR- 2012/08/29 CRDT- 2012/08/31 06:00 PHST- 2012/08/31 06:00 [entrez] PHST- 2012/08/31 06:00 [pubmed] PHST- 2012/12/12 06:00 [medline] PHST- 2012/08/29 00:00 [pmc-release] AID - 1213353109 [pii] AID - 201213353 [pii] AID - 10.1073/pnas.1213353109 [doi] PST - ppublish SO - Proc Natl Acad Sci U S A. 2012 Sep 18;109(38):15101-8. doi: 10.1073/pnas.1213353109. Epub 2012 Aug 29.