Stanford University


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  • Paula V. Welander

    Paula V. Welander

    Associate Dean for Research and Professor of Earth System Science

    Current Research and Scholarly InterestsBiosynthesis of lipid biomarkers in modern microbes; molecular geomicrobiology; microbial physiology

  • Chad S. Weldy, M.D., Ph.D.

    Chad S. Weldy, M.D., Ph.D.

    Instructor, Medicine - Cardiovascular Medicine

    Current Research and Scholarly InterestsAs a physician-scientist I work to understand the genetic basis of cardiovascular disease and the transcriptional and epigenomic mechanisms of atherosclerosis. My work is focused across four main areas of cardiovascular genetics and mechanisms of coronary artery disease and smooth muscle biology:

    1.Vascular smooth muscle specific ADAR1 mediated RNA editing of double stranded RNA and activation of the double stranded RNA receptor MDA5 in coronary artery disease and vascular calcification
    2.Defining on single cell resolution the cellular and epigenomic features of human vascular disease across vascular beds of differing embryonic origin
    3.CRISPRi screening with targeted perturb seq (TAPseq) to identify novel CAD genes in human coronary artery smooth muscle cells
    4.Investigation of the epigenetic and molecular basis of coronary artery disease and smooth muscle cell transition in mice with conditional smooth muscle genetic deletion of CAD genes Pdgfd and Sox9

    My work is focused on discovery of causal mechanisms of disease through leveraging human genetics with sophisticated molecular biology, single cell sequencing technologies, and mouse models of disease. This work attempts to apply multiple scientific research arms to ultimately lead to novel understandings of vascular disease and discover important new therapeutic approaches for drug discovery.

    First Author Manuscripts for this work:

    •Weldy, C. S., et al. (2025). Smooth muscle cell expression of RNA editing enzyme ADAR1 controls activation of RNA sensor MDA5 in atherosclerosis. (2025). Nature Cardiovascular Research. 1-17, PMID: 40958051, doi: 10.1038/s44161-025-00710-5
    •*Selected as finalist for Louis N. and Arnold M. Katz Basic Science Research Prize from the American Heart Association, finalist competition November 16, 2024, Chicago
    •Work was highlighted in the Stanford Department of Medicine News
    https://medicine.stanford.edu/news/current-news/standard-news/RNA-editing.html


    •Weldy, C.S., et al. (2025). Epigenomic landscape of single vascular cells reflects developmental origin and disease risk loci. Molecular Systems Biology. 1-25, PMID: 40931195, doi:10.1038/s44320-025-00140-2.
    •*Selected for the cover of November 2025 edition of Molecular Systems Biology


    Grant funding received for this work:

    Mentored Clinical Scientist Research Career Development Award (K08)(NIH/NHLBI, 1 K08 HL167699-01), August, 2023 – July 2028. PI: Weldy, Chad
    •Title of proposal: “ADAR Mediated RNA editing is a causal mechanism in coronary artery disease”.
    •Activated 08/01/2023
    •$850,000 over 5 years

    Career Development Award, American Heart Association (AHA CDA)(23CDA1042900), July, 2023 – June, 2026. PI: Weldy, Chad
    •Title of proposal: “Linking RNA editing to coronary artery calcification and disease”
    •Activated 07/01/2023
    •$231,000 over three years

    NIH Loan Repayment Program (LRP) Award (NIH/NHLBI) Renewal Award, July, 2023. PI: Weldy, Chad
    •Title of proposal: “RNA editing is a causal mechanism of coronary artery disease”

    Ruth L. Kirschstein National Research Service Award (NRSA) Individual Postdoctoral Fellowship (F32) (NIH/NHLBI, 1 F32 HL160067-01), July, 2021 – June 2023 (Completed). PI: Weldy, Chad
    • Titled, “A transcriptional network which governs smooth muscle transition is mediated by causal coronary artery disease gene PDGFD”
    •*Received perfect score with impact score 10, 1st percentile

    NIH Loan Repayment Program (LRP) Award (NIH/NHLBI), July, 2021. PI: Weldy, Chad
    •Title of proposal: "Single cell transcriptomic and epigenomic features of human atherosclerosis".
    •This will award up to $100,000 towards student loans over the next 24 months with opportunity for renewal after 24 months.

  • Andy Wen

    Andy Wen

    Clinical Professor, Pediatrics - Critical Care

    BioDr. Andy Y. Wen joined the Division of Pediatric Critical Care Medicine at Stanford University School of Medicine in 2019. He received his B.A. degree in Molecular Biology & Biochemistry at Rutgers University, and his medical degree from Rutgers Robert Wood Johnson Medical School. He completed a Pediatrics Residency Training Program at the State University of New York Downstate Medical Center and a Pediatric Critical Care Medicine Fellowship Training Program at the University of California Los Angeles.

    After briefly working for Kaiser Permanente Southern California Permanente Medical Group, Dr. Wen joined the Division of Pediatric Critical Care at NYU School of Medicine. He assumed the role of Bellevue Hospital PICU medical director and helped to expand Bellevue's Pediatric Trauma Program and Pediatric Critical Care Transport Services for the New York City (NYC) public hospital system, NYC Health & Hospitals. During the 2014 to 2016 Ebola outbreak in West Africa, Dr. Wen was a member of the Special Pathogens Program at Bellevue Hospital, which was one of only four institutions in the US to treat a patient with Ebola and helped established the National Ebola Training and Education Center (NETEC).

    While at UCLA, Dr. Wen received a T32 Training Grant to perform research investigating the role of transcription factor CREB in innate immune function using a murine model for AML. At NYU, his research projects included analyzing transfusion practices in the PICU, quality improvement projects targeting patients at high risk for unplanned extubation, and exploring the utility of NIRS as an early predictor of seizure activity. Dr. Wen is a member of Pediatric Acute Lung Injury & Sepsis Investigators (PALISI) and has been involved in multi-center studies looking at critical care patients with Bronchiolitis and COVID-19. Dr. Wen is the USA Editor for Journal of Pediatric Intensive Care and has reviewed abstracts for PAS, SCCM, and AMIA. His educational efforts have included teaching Pediatric Fundamental Critical Care Support (PFCCS) courses, helping develop a Pediatric Residency Simulation course curriculum, and helping develop a Point-of-Care Ultrasound course for critical care advanced practice providers.

    At Stanford University School of Medicine, Dr. Wen is in charge of Regional Pediatric Critical Care Outreach with a goal to promote medical education and expand the Stanford Children’s Health network to improve access for sick children in need of high quality care. Dr. Wen provides clinical services at both John Muir Medical Center and Lucile Packard Children’s Hospital.

  • Leif Wenar

    Leif Wenar

    Olive H. Palmer Professor of the Humanities, Professor of Philosophy, Senior Fellow at the Woods Institute for the Environment and Professor, by courtesy, of Political Science

    BioLeif Wenar is a political philosopher. After receiving his AB at Stanford, he earned his PhD at Harvard, worked in Britain, and returned to Stanford in 2020.

    He is the author of Blood Oil: Tyrants, Violence, and the Rules that Run the World and the author-meets-critics volume Beyond Blood Oil: Philosophy, Policy, and the Future. He is also the author of the entries for ‘John Rawls’ and ‘Rights’ in The Stanford Encyclopedia of Philosophy. His articles have appeared in Mind, Analysis, Philosophy & Public Affairs, Ethics, The Journal of Political Philosophy, The Columbia Law Review, and The Philosopher’s Annual. He co-edited Giving Well: The Ethics of Philanthropy, as well as an autobiographical volume by the economist FA Hayek.

    He has been a Visiting Professor at the Stanford Center on Ethics and Society, a fellow at the Center for Advanced Studies in the Behavioral Sciences at Stanford, the William H. Bonsall Visiting Professor in the Stanford Philosophy Department, a Laurance S. Rockefeller Fellow and a Visiting Professor at Princeton’s University Center for Human Values, a Visiting Professor at the Princeton Department of Politics, a Fellow of the Program on Justice and the World Economy at the Carnegie Council on Ethics and International Affairs, a Faculty Fellow at the Center for Ethics and Public Affairs at The Murphy Institute of Political Economy, and a Visiting Fellow at the Australian National University School of Philosophy.

    His public writing has been featured in The New York Times, The Wall Street Journal, The Los Angeles Times, Foreign Affairs, and the playbill for the White Light Festival at Lincoln Center. In London, he served for several years on the Mayor’s Policing Ethics Panel, which advises the Mayor and the Metropolitan Police on issues such as digital surveillance and the use of force.

    He is currently developing unity theory, a foundational account of what makes for more valuable lives, relationships, and societies. His published work can be found at wenar.info.

  • Paul Wender

    Paul Wender

    Francis W. Bergstrom Professor and Professor, by courtesy, of Chemical and Systems Biology

    Current Research and Scholarly InterestsMolecular imaging, therapeutics, drug delivery, drug mode of action, synthesis