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The Demaria’s lab has a central interest in addressing the molecular mechanisms whereby ionizing radiation modulates tumor immunogenicity, and exploiting this property of radiation to achieve a therapeutic synergy with immunotherapy in pre-clinical tumor models and in cancer patients. We have recently demonstrated that radiation-induced viral mimicry in cancer cells leads to activation of type I interferon via the cGAS/STING pathway. In vivo, this process contributes to the recruitment and activation of conventional dendritic cells type I (cDC1) to the irradiated tumor and promotes cross-priming and activation of tumor-specific T cells. Ongoing work is addressing other pathways that regulate the ability of radiation to generate an in situ tumor vaccine by modulating innate and adaptive immune cells function. In addition, we found that the transcriptional response elicited by radiation-induced DNA damage enhances the expression of immunogenic mutations, and are investigating the radiation-induced changes in the immunopeptidome presented by MHC class I and MHC class II molecules.
Sandra Demaria, MD
Principal Investigator
Sandra Demaria, M.D., a native of Turin, Italy, obtained her M.D. from the University of Turin, and then moved to New York for her post-doctoral training in immunology as a Damon Runyon-Walter Winchell Cancer Research Fund awardee, followed by a residency in anatomic pathology at NYU School of Medicine (NYU SoM). She remained on the faculty at NYU SoM until 2015 raising to the rank of Professor. She is currently Professor of Radiation Oncology and Pathology at Weill Cornell Medicine in New York City. Dr. Demaria is internationally known for her studies demonstrating the synergy of local radiation therapy with different immunotherapeutic agents in pre-clinical models of cancer. She was the first to show that radiotherapy can convert tumors unresponsive to immune checkpoint inhibitors into responsive ones, a finding being translated in several clinical trials at multiple institutions. As a breast cancer pathologist Dr. Demaria has also studied the immunological microenvironment of breast cancer in patients, and therapeutic strategies to modulate the immune infiltrate in preclinical breast cancer models. Her current work is funded by the US National Cancer Institute and by several private foundations. She has held leadership positions in national professional societies, including the Society for Immunotherapy of Cancer (SITC) where she served on the Board, the AACR Cancer Immunology Working Group Steering Committee, and the Radiation Research Society. She serves in the editorial board of several journals, including The Journal of Immunology, Cancer Immunology Research, Clinical Cancer Research, and Journal for ImmunoTherapy of Cancer.
Maud Charpentier, Ph.D.
Post-Doctoral Associate
Maud obtained her PhD in Immunology - Immunotherapy from the University of Nantes, France. She joined Dr Demaria’s Lab in November 2018 as a Postdoctoral associate. Her current research focusses on deciphering the molecular mechanisms of cancer cell intrinsic type I interferon responses induced by radiation therapy and improvement of in vivo tumor anti-tumor responses by combination of radiation therapy and immunotherapy treatments. Using 3D in vitro culture techniques, she is also investigating how hypoxia impacts the radiation therapy induced activation of IFN pathway and anti-tumor immune response. During her free time, her favourite activities include reading, visiting the countless art exhibitions/shows of New York and spending time with her friends and family.
Hiro Sato, M.D., Ph.D.
Post-Doctoral Associate
Hiro is a Radiation Oncologist and obtained his PhD from the Gunma University, Japan. In 2021, he joined Dr. Demaria’s laboratory at Weill Cornell Medicine as Visiting Fellow. He sees the possibility of combining radiotherapy and immunotherapy to cure even metastatic cancer. Thus, he is interested in finding the optimal way of radiotherapy when combined with immunotherapy. His current works is focused on the immune responses induced by radiotherapy in the irradiated cancer cells and surrounding tumor microenvironment (TME). During his free time, he enjoys watching movies, listening music, and reading. He also loves traveling with his wife and two playful kids.
David Sprott
Medical Student
David is currently a first-year medical student at Cornell. He was born and raised in Southern California. At 18 years old, he enlisted in the Marine Corps and spent 5 years in Washington DC at the White House Communications Agency. Then, he went to Portland State University and received a BS in Biology. While in Oregon, he studied adoptive T-cell therapy under Dr. Eric Tran at the Earle A. Chiles Research Institute. He is currently a first-year medical student at Cornell interested in becoming a radiation oncologist. He will be studying mechanisms of resistance to radiation therapy in the Demaria Lab for the next 4 years.
Dahlia Vargas
Summer Student
Dahlia is a rising senior at CUNY Hunter College where she is pursuing a degree in Human Biology. She has lived up and down the West Coast her entire life and moved to New York in 2018. As part of the Ronald E. McNair Postbaccalaureate Achievement program, she has joined Demaria lab for the summer to learn the fundamentals of scientific research. During her free time, she enjoys fantasy and sci-fi novels, comics, and history.
Recent Publications
Wennerberg E, Mukherjee S, Spada S, Hung C, Agrusa CJ, Chen C, Valeta-Magara A, Rudqvist NP, Van Nest SJ, Kamel MK, Nasar A, Narula N, Mittal V, Markowitz GJ, Zhou XK, Adusumilli PS, Borczuk AC, White TE, Khan AG, Balderes PJ, Lorenz IC, Altorki N, Demaria S, McGraw TE, Stiles BM. Expression of the mono-ADP-ribosyltransferase ART1 by tumor cells mediates immune resistance in non-small cell lung cancer. Sci Transl Med. 2022 Mar 16;14(636):eabe8195. doi: 10.1126/scitranslmed.abe8195. Epub 2022 Mar 16. PubMed PMID: 35294260; PubMed Central PMCID: PMC9256502.
Lhuillier C, Rudqvist NP, Yamazaki T, Zhang T, Charpentier M, Galluzzi L, Dephoure N, Clement CC, Santambrogio L, Zhou XK, Formenti SC, Demaria S. Radiotherapy-exposed CD8+ and CD4+ neoantigens enhance tumor control. J Clin Invest. 2021 Mar 1;131(5). doi: 10.1172/JCI138740. PubMed PMID: 33476307; PubMed Central PMCID: PMC7919731.
For a complete list of peer-reviewed publications from Sandra Demaria, please visit here
