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Radu V. Stan, MD, PhD

Associate Professor of Biochemistry and Cell Biology
Associate Professor of Pathology and Laboratory Medicine
Director, Optical Cell Imaging Facility, Co-Director, Irradiation, Pre-clinical Imaging and Microscopy Shared Resource, Norris Cotton Cancer Center, Lebanon, NH

Biochemistry and Cell Biology
Pathology and Laboratory Medicine

M.D. 1993 - Cluj, Romania
Postdoctoral, 1994-1999 at University of California San Diego Medical (Advisor George E. Palade)
Ph.D. 2013 - Groningen, The Netherlands

Heart and Vascular Research Center
Norris Cotton Cancer Center
Program in Experimental and Molecular Medicine


Contact Information:

Geisel School of Medicine at Dartmouth
Department of Biochemistry and Cell Biology
One Medical Center Drive
Lebanon NH 03756

Office: Rubin 623
Phone: 603-650-8781
Fax: 603-653-9952
Email: Radu.V.Stan@Dartmouth.edu

Professional Interests:

Our laboratory studies the biology of endothelial cells related to cardiovascular function in normal undisturbed tissues as well as in adaptive and pathologic processes underlying inflammatory diseases and cancer.

Our efforts are currently focused on several distinct but interactive project areas, relying on a wide array of experimental approaches including electron microscopy, fluorescence live cell imaging, biochemical, cell biological, genetic and whole animal physiology approaches. These current focus areas are:

1) Cell biology of the endothelium: The laboratory studies how, on one hand, fundamental mechanisms of signaling and membrane traffic control endothelial cell differentiation and organization in different vascular beds. Specific endothelial structures (fenestrae, transendothelial channels, vesiculo-vacuolar organelles, caveolae and other vesicular carriers) have been shown to mediate the exchanges between blood and tissues. Our laboratory has cloned and characterized Plasmalemma Vesicle Associated Protein (PLVAP) gene, whose gene product, the PLVAP/PV1 protein, is the first known component of the endothelial stomatal and fenestral diaphragms, present on the endothelial structures involved in permeability. Taking advantage of PV1 we are currently trying to understand the biogenesis, cellular function and regulation of the endothelial structures involved in transendothelial exchange.

2) Pathways of exchange between blood and the interstitial space: We are particularly interested in elucidating the molecular mechanisms involved in the transendothelial exchanges between the blood plasma and the interstitial fluid in health and disease. We are using genetically engineered mice generated in the lab to understand the precise role of vesicular trafficking as well as the role of endothelial microdomains such as transendothelial channels, fenestrae and vesiculo-vacuolar organelles in microvascular permeability.

3) Role of PV1 in inflammation: PV1 is unregulated on the activated endothelium in inflammatory lesions. Downregulation of PV1 results in blunted diapedesis of leukocytes, which prompted studies as to the precise mechanism by which PV1 participates in this process.

4) Role of PV1 in cancer: Previous work has shown that PV1 is expressed in most, if not all, solid tumor vessels. We have shown that intratumoral deletion of PV1 results in impaired tumor growth, which prompted studies as to the precise mechanism by which PV1 promotes tumor formation and growth.

Keywords: Inflammation, cancer, angiogenesis, microvascular permeability endothelial differentiation, endothelial cell biology, endocytosis, transcytosis, fenestrae, caveolae, transendothelial channels.

Rotations and Thesis Projects:

1. Determine the role of PV1 in inflammation.
2. Determine the role of PV1 protein in cancer. We are employing multiple cancer models to study the role of PV1 in tumor growth.
3. Development of anticancer diagnostics and therapeutics.
4. Characterize the role of PV1 and its interacting partners in the biogenesis and function of caveolae and fenestrae. Determine the roles of these endothelial structures in vivo.

Grant Information:


Courses Taught:

PEMM 101
PEMM 102
PEMM 275
PEMM 126


Dr. Stan did his postdoctoral training 1994-1999 at University of California San Diego Medical in the laboratory of George Palade, where he worked on the role of caveolae/lipid rafts and fenestrae in the cell biology of vascular permeability. He joined the faculty at UCSD as a Project Scientist (1999 ) and Research Assistant Professor (2000) in the Department of Cellular and Molecular Medicine continuing his studies of the molecular mechanisms of vascular permeability and the structures involved. In 2004, Dr. Stan joined the faculty of the departments of Pathology, and of Microbiology and Immunology at Dartmouth Medical School as an Assistant Professor and became Associate Professor in 2009. Currently, he is a member of the Heart and Vascular Research Center, Norris Cotton Cancer Center and affiliated with the Immunology COBRE. Since 2013 Dr Stan serves as the Director of the Optical Cell Imaging Facility and Co-Director, Irradiation, Pre-clinical Imaging and Microscopy Shared Resource, Norris Cotton Cancer Center.

Selected Publications:


HS3ST1 genotype regulates antithrombin's inflammomodulatory tone and associates with atherosclerosis.
Smits NC, Kobayashi T, Srivastava PK, Skopelja S, Ivy JA, Elwood DJ, Stan RV, Tsongalis GJ, Sellke FW, Gross PL, Cole MD, DeVries JT, Kaplan AV, Robb JF, Williams SM, Shworak NW
Matrix Biol. 2017 Jan 23; pii: S0945-053X(17)30016-1. doi: 10.1016/j.matbio.2017.01.003. Epub 2017 Jan 23.
PMID: 28126521

Epithelial cell integrin β1 is required for developmental angiogenesis in the pituitary gland.
Scully KM, Skowronska-Krawczyk D, Krawczyk M, Merkurjev D, Taylor H, Livolsi A, Tollkuhn J, Stan RV, Rosenfeld MG
Proc Natl Acad Sci U S A. 2016 Nov 22;113(47):13408-13413. Epub 2016 Nov 3.
PMID: 27810956

Endothelial Plasmalemma Vesicle-Associated Protein Regulates the Homeostasis of Splenic Immature B Cells and B-1 B Cells.
Elgueta R, Tse D, Deharvengt SJ, Luciano MR, Carriere C, Noelle RJ, Stan RV
J Immunol. 2016 Nov 15;197(10):3970-3981. Epub 2016 Oct 14.
PMID: 27742829

VEGFR2 pY949 signalling regulates adherens junction integrity and metastatic spread.
Li X, Padhan N, Sjostrom EO, Roche FP, Testini C, Honkura N, Sainz-Jaspeado M, Gordon E, Bentley K, Philippides A, Tolmachev V, Dejana E, Stan RV, Vestweber D, Ballmer-Hofer K, Betsholtz C, Pietras K, Jansson L, Claesson-Welsh L
Nat Commun. 2016 Mar 23;7:11017. doi: 10.1038/ncomms11017. Epub 2016 Mar 23.
PMID: 27005951

Uncoupling Caveolae From Intracellular Signaling In Vivo.
Kraehling JR, Hao Z, Lee MY, Vinyard DJ, Velazquez H, Liu X, Stan RV, Brudvig GW, Sessa WC
Circ Res. 2016 Jan 8;118(1):48-55. doi: 10.1161/CIRCRESAHA.115.307767. Epub 2015 Nov 24.
PMID: 26602865

An updated h-index measures both the primary and total scientific output of a researcher.
Bucur O, Almasan A, Zubarev R, Friedman M, Nicolson GL, Sumazin P, Leabu M, Nikolajczyk BS, Avram D, Kunej T, Calin GA, Godwin AK, Adami HO, Zaphiropoulos PG, Richardson DR, Schmitt-Ulms G, Westerblad H, Keniry M, Grau GE, Carbonetto S, Stan RV, Popa-Wagner A, Takhar K, Baron BW, Galardy PJ, Yang F, Data D, Fadare O, Yeo KJ, Gabreanu GR, Andrei S, Soare GR, Nelson MA, Liehn EA
Discoveries (Craiova). 2015 Jul-Sep;3(3) pii: e50. Epub 2015 Sep 30.
PMID: 26504901

Mutations in Plasmalemma Vesicle Associated Protein Result in Sieving Protein-Losing Enteropathy Characterized by Hypoproteinemia, Hypoalbuminemia, and Hypertriglyceridemia.
Elkadri A, Thoeni C, Deharvengt SJ, Murchie R, Guo C, Stavropoulos JD, Marshall CR, Wales P, Bandsma R, Cutz E, Roifman CM, Chitayat D, Avitzur Y, Stan RV, Muise AM
Cell Mol Gastroenterol Hepatol. 2015 Jul;1(4):381-394.e7.
PMID: 26207260

Tumor endothelial marker imaging in melanomas using dual-tracer fluorescence molecular imaging.
Tichauer KM, Deharvengt SJ, Samkoe KS, Gunn JR, Bosenberg MW, Turk MJ, Hasan T, Stan RV, Pogue BW
Mol Imaging Biol. 2014 Jun;16(3):372-82. doi: 10.1007/s11307-013-0692-1. Epub 2013 Nov 12.
PMID: 24217944

Evidence for tankyrases as antineoplastic targets in lung cancer.
Busch AM, Johnson KC, Stan RV, Sanglikar A, Ahmed Y, Dmitrovsky E, Freemantle SJ
BMC Cancer. 2013 Apr 28;13:211. doi: 10.1186/1471-2407-13-211. Epub 2013 Apr 28.
PMID: 23621985

Imaging and modification of the tumor vascular barrier for improvement in magnetic nanoparticle uptake and hyperthermia treatment efficacy.
Hoopes PJ, Petryk AA, Tate JA, Savellano MS, Strawbridge RR, Giustini AJ, Stan RV, Gimi B, Garwood M
Proc SPIE Int Soc Opt Eng. 2013 Feb 26;8584 pii: 858403.
PMID: 25285190