Basic, Translational and Clinical Science

The OHSU basic science team photo.

The OHSU Dermatology Research Division merges basic, clinical and translational research in skin/mucosal cancers and other dermatologic diseases. We build upon three elements:

  1. Molecular, cellular and tissue based models of disease
  2. Specialized cell separation and culture
  3. Molecular genetics for diagnosis and therapy

The research division is designed to foster interactions among basic and clinical scientists and resident fellows of the department for novel and synergistic research activities and applications.

Basic science labs

Kulkarni Lab Page

Rajan Kulkarni, M.D., Ph.D., Associate Professor of Dermatology
Terri Clister, Ph.D., Senior Research Associate
Rosalyn Fey, Computational Biologist 2
Zach Garrison, Research Assistant 2
Connor Hall, Research Assistant
Nabeela Khan, Research Assistant 2
Rebecca Nichols, Senior Research Assistant


The Kulkarni Lab focuses on the intersection of basic biology, technology and medicine to help better realize the vision of personalized medicine in cancer. 

Kulkarni Lab research is now centered on basic and translational studies to enable molecularly-based, personalized approaches to cancer care, in collaboration with the VA, the Center for Early Detection Research (CEDAR), and the Knight Cancer Institute. To this end, we are collaborating extensively with technology groups at OHSU and CEDAR to improve our abilities to gain information about tumor heterogeneity through single cell isolation and analysis, for all cancers, but primarily in melanoma, prostate and lung cancers.

A parallel line of research focuses on oncodermatology and elucidating the mechanisms by which novel chemotherapeutics and immunotherapies cause skin toxicities/rashes and whether these mechanisms have any correlation with anti-tumor effect and overall outcome. Our overall goal is to couple genomic, epigenetic and clinical information to design novel treatment strategies and ultimately improve patient outcomes.

Dr. Kulkarni's past research focused on two main areas: 

  • Development of innovative methods to enable earlier cancer detection and its recurrence through isolation and analysis of circulating tumor cells
  • Improving our understanding of 3D tumor architecture through tissue clearing methods (PARS and PACT CLARITY) for intact 3D tissue imaging. 

Leachman-Cassidy Lab Webpage

Sancy Leachman, M.D., Ph.D., Professor and Chair, Dermatology; Director, Melanoma Research Program, Knight Cancer Institute
Pamela Cassidy, Ph.D., Research Associate Professor

The Leachman-Cassidy Lab is a transdisciplinary and translational research team designed to improve melanoma health outcomes with a focus on melanoma prevention and early detection before metastasis can occur. Their goal is to eliminate as many melanoma-related deaths as possible utilizing a full-spectrum approach; from bench-side basic science, to bed-side treatment and care, to wide-scale public health outreach. 

Dr. Cassidy leads the Lab's translational and basic science efforts, incorporating molecular, cellular and human genetics studies to understand and develop prevention agents for the highest risk individuals. Together they have a long standing program in collaboration with Dr. Elizabeth Berry, to understand and identify individuals who are genetically predisposed to melanoma, for the purpose of improved screening and detection and chemoprevention.

Dr. Leachman leads the clinical science and population health efforts through her nationwide War on MelanomaTM  effort. This includes the creation of the largest melanoma registry in the country, as well as other key efforts such as the MoleMapperTM mole tracking phone app, melanoma education efforts for several key audiences, and the public health campaign Start Seeing MelanomaTM. She is also an advocate for innovative technologies for melanoma screening and diagnosis.

Yuangang Liu, Ph.D., Research Assistant Professor
Zhiping Wang, Ph.D., Senior Research Associate


Liu Lab's research interest is to understand the molecular basis of skin interaction with the environment. As the first line of defense, innate immunity plays a central role in host defense against infection, wound healing, and skin homeostasis. Altered innate immunity contributes to the pathogenesis of many inflammatory skin diseases, including atopic dermatitis, psoriasis, and pyoderma gangrenosum (PG). Liu Lab’s research has been focused on understanding the molecular basis of PG pathogenesis in order to define the molecular basis of ulcer formation in PG, and harness innate immune pathway in PG therapy.

Hornick Lab Page

Noah Hornick, M.D., Ph.D.
Assistant Professor of Dermatology

Dr. Hornick specializes in the set of skin problems that are unique to patients undergoing the treatment of cancers. His goal is to help patients and their oncologists anticipate, manage, and minimize the impact of these common problems during cancer therapy. In the laboratory, Dr. Hornick investigates the ways in which these medication reactions are related to other common skin diseases, which he believes will help inform the treatment of both.

Affiliate labs

Coussens Lab
Lisa M. Coussens, Ph.D.
Professor of Cell, Developmental and Cancer Biology, School of Medicine
Associate Director for Basic Research, OHSU Knight Cancer Institute, School of Medicine
Chair, Department of Cell, Developmental & Cancer Biology
Cell and Developmental Biology Graduate Program, School of Medicine
Cancer Biology Graduate Program, School of Medicine
Program in Molecular and Cellular Biosciences, School of Medicine

Duvoisin Lab

The objectives of the laboratory are to study the structure, distribution, and function of G protein-coupled metabotropic glutamate receptors (mGluRs). Because mGluRs modulate, as opposed to mediate, synaptic transmission, compounds acting on mGluRs are being investigated as therapies and are in clinical trials for neurological and psychiatric diseases such as central pain, drug addiction, excitotoxic neuronal injury following stroke, Parkinson's disease, Alzheimer's disease, anxiety, and schizophrenia.

Robert M. Duvoisin, Ph.D.
Professor of Chemical Physiology and Biochemistry, School of Medicine
Graduate Program in Biomedical Sciences, School of Medicine

Indra Lab
Arup Indra, Ph.D.
Adjunct Associate Professor of Dermatology
Associate Professor of Pharmaceutical Sciences, Oregon State University

Lloyd and McCullough Lab

The goal of our combined laboratories is to translate fundamental basic science discoveries focused on cellular DNA damage response pathways into actionable clinical interventions and improved therapeutic response. We specifically are interested in mechanisms of DNA repair and replication that modulate mutagenesis and subsequent carcinogenesis in response to a variety of both natural and man-made toxicant exposures. In addition, we investigate how alterations in DNA repair and tolerance networks affect the initiation and progression of human carcinogenesis and how these fundamental principles and acquired genetic instabilities can be used to leverage tumor-specific therapeutics.

Amanda McCullough, Ph.D.
Professor, Oregon Institute of Occupational Health Sciences
Professor of Molecular and Medical Genetics, School of Medicine
Co-Director, Molecular & Medical Genetics Graduate Program
Molecular and Medical Genetics Graduate Program, School of Medicine
Cancer Biology Graduate Program, School of Medicine
Program in Molecular and Cellular Biosciences, School of Medicine

R. Stephen Lloyd, Ph.D.
Professor, Oregon Institute of Occupational Health Sciences
Professor of Molecular and Medical Genetics, School of Medicine
Associate Director for Basic Research, Oregon Institute of Occupational Health Sciences
Molecular and Medical Genetics Graduate Program, School of Medicine
Program in Molecular and Cellular Biosciences, School of Medicine
Cancer Biology Graduate Program, School of Medicine

Morgans Lab


The first stage of image processing in the visual system occurs in the retina at the synapses between photoreceptors and bipolar cells. Adaptation mechanisms at this site are likely to have profound effects on vision. Our research aims to elucidate the biochemical mechanisms by which these synapses adapt to changing light conditions.

Catherine W. Morgans, Ph.D.
Professor of Chemical Physiology and Biochemistry, School of Medicine
Graduate Program in Biomedical Sciences, School of Medicine

Oshimori Lab
Naoki Oshimori, Ph.D.
Associate Professor of Dermatology and Cell & Developmental Biology

Tracy Petrie, Ph.D. 
Ravi Samatham, Ph.D. 

The Petrie/Samatham lab supports the research efforts of the Department of Dermatology through software and optical engineering, data analysis, and research.  

Dr. Petrie oversees the MoleMapper program which was OHSU's first externally provided smartphone app used by individuals to track moles while optionally participating in IRB-approved research. In addition, he uses Machine Learning to study pigmented skin lesions, confocal images, and other modalities. He also provides support for the department's specialized image processing and image database needs.  

  Dr. Samatham designs and constructs novel photonic devices, advises on the selection and use of state-of-the-art imaging products, and supports teams within OHSU to further clinical and research missions. He provides custom analysis of photon/skin interactions across a broad spectrum of emerging technologies. He currently is working on novel applications of Optical Coherence Tomography and Reflectance Confocal Microscopy used to diagnose and assess dermatologic conditions. Additionally, he analyzes and manages interactions with research cohorts within the War on Melanoma and MoleMapper projects.  

Ruhland Lab
Megan Ruhland, Ph.D.
Assistant Professor
Cell, Developmental & Cancer Biology
Department of Dermatology

The Ruhland lab is broadly interested in understanding the whowhatwhen and where of antigen presentation in the lymph node. In particular we focus on the pathways used by myeloid cell populations to bring tumor-derived antigen into the lymph node and subsequently seed antigen into lymph node resident cell populations. 

Learn more.

Jackilen Shannon, Ph.D.
Professor, OHSU-PSU School of Public Health
Associate Director, Community Outreach and Engagement, OHSU Knight Cancer Institute, School of Medicine
Associate Director, Oregon Clinical and Translational Research Institute
Graduate Programs in Human Nutrition, School of Medicine

Dr. Shannon is a population scientist. As such, her work begins with consideration of the distribution and determinants of disease at the population level.  Over the years her diverse training in Nutrition Science (BS), Public Health (MPH), Nutritional Epidemiology (PhD) and Cancer Epidemiology (post-doc) has allowed her to explore many levels of analysis, including the individual- level (dietary intake ) and the micro-level (molecular markers, genetic polymorphisms), but always with an intent of population level application.

Thuillier Lab

Our lab is focusing on the molecular mechanisms by which dietary nutrients can prevent cancer. We have the unique approach of combining molecular biology and epidemiology to truely assess translationally the genetic and epigenetic mechanisms regulating cancer cell and tumor growth.

Philippe Thuillier, Ph.D. 
Assistant Professor of Dermatology, School of Medicine

Wong Lab
Melissa H. Wong, Ph.D.
Associate Professor of Dermatology and Cell & Developmental Biology

Yantasee Lab

The Yantasee Lab combines novel nanotechnology and cancer systems biology to develop next-generation combination immunotherapies for cancer. We aspire to substantially improve health care using our proprietary nanotechnology platform. It can co-deliver siRNA, chemo drugs, vaccines, and/or immunotherapies. We capitalize on this platform to generate next generation combination immune therapies for cancer by co-delivering therapeutics targeting complementary cancer and immune pathways, leading to synergistic clinical benefits. 

Wassana Yantasee, Ph.D.
Professor of Biomedical Engineering, School of Medicine
Program in Molecular and Cellular Biosciences, School of Medicine

About vitiligo
Vitiligo, a skin pigmentation disorder which afflicts an estimated 100 million people worldwide, is characterized by the loss of pigment in affected areas of skin. It is neither life threatening nor contagious, but the white skin patches it causes produce emotional distress for many, and often lead to social ostracism because of a widespread misconception that the condition is infectious.

An estimated one to two percent of the world’s population, or 60 to 100 million people, suffer from the malady. Current treatments, which rely on immunosuppression or ultraviolet radiation to stimulate repigmentation, take time to work and are only partially effective, often producing a mottled appearance. Excessive UV radiation also poses the risk of skin cancer.

Piperine, a potential new treatment for vitiligo
The Department of Dermatology has supported scientific research by Amala Soumyanath, Ph.D., a professor in the Department of Neurology, and Philippe Thuillier, Ph.D., an assistant professor in the Department of Dermatology, for their promising work on a new potential vitiligo therapy.  Piperine, an extract of black pepper, has been demonstrated to enhance melanocyte growth in vivo. The goal of this innovative research is to offer people with vitiligo a new and effective treatment option.

“Based on the animal studies we have done, piperine, if proven safe in humans, may provide a means of speeding up repigmentation produced by standard treatments such as narrow band UVB” said Amala Soumyanath, Ph.D. “Vitiligo is a highly visible disease that can greatly affect patients psychologically and emotionally, even driving some to consider suicide. Any breakthrough in treating it would benefit a huge number of people around the world.”

Piperine stimulates skin pigment cells
Soumyanath and her collaborators have reported on the effects of their compounds in animals in a paper published in the British Journal of Dermatology. But development of the concept dates back more than two decades to work initiated by Soumyanath at King’s College London. Soumyanath’s group discovered –while researching natural remedies for vitiligo – that piperine, the pungent component of  black pepper, stimulated the proliferation of melanocytes in cell cultures. Melanocytes are the cells that produce pigmentation in the skin. The researchers then designed and tested many synthetic piperine analogs and identified a number that produced the same result.

The group subsequently found that piperine and two of its analogs – tetrahydropiperine (THP) and a cyclohexyl derivative (RCHP) produced light, even pigmentation when applied to the skin of a poorly pigmented mouse model. When combined with UV radiation, the skin grew significantly darker and showed none of the patchiness caused by UV treatment alone. Moreover, skin pre-treated with a piperine compound required fewer UV exposures, thus lowering the cancer risk, and it took longer for the pigmentation to fade again than when UV alone was used.

Research at OHSU
Soumyanath came to OHSU in 2003, where she has established collaborations with scientific and clinical researchers at the Department of Dermatology to continue work on this project, including  Philippe Thuillier, Ph.D., (Assistant Professor), Dr Pamela Cassidy Ph.D (Professor), Dr Eric Simpson (Professor) and  Dr  Sancy Leachman M.D. PhD (Professor and Chair of Dermatology). “Dr. Soumyanath’s discoveries open up completely new and exciting treatment possibilities for those individuals affected by vitiligo,” said Dr Sancy Leachman, M.D., Ph.D.  “There is a huge unmet need for this disease, since we have very few treatments to offer patients right now,” she noted.

Soumyanath and the collaborative team are continuing to find additional scientific answers. An important step before clinical trials can be undertaken in the U.S., said Soumyanath, is to determine whether the repigmentation effects of piperine is associated in any way with melanoma or other skin cancers. “From our mouse and cell studies so far, it doesn’t appear that is the case,” she said. “In fact, piperine seems to have anti-cancer or cancer preventive effects. We are hopeful that more detailed research will bear this out.”  The group has developed a cream formulation that allows good penetration of piperine into the skin. They are eager to test piperine in volunteers with vitiligo once they are able secure funding for a clinical trial.’

Support the research
OHSU acquired the patents to Soumyanath’s piperine compounds from King’s College London and BTG International Ltd. in 2006, and is actively seeking a commercial partner to advance piperine through pharmaceutical development. In the meantime, the researchers are actively seeking grants and philanthropic donations to obtain data to attract such a partner.

To support this effort financially, you can choose Vitiligo Research on our Foundation Giving page.

Translational and Clinical Science

Research Focus: Melanoma 

Research Focus: Shared decision making, vulvar dermatology 

Teri M Greiling, M.D., Ph.D. 
Associate Professor and Vice Chair of Dermatology 

Dr. Greiling does clinical and translational research on inflammatory and autoimmune skin conditions. Her primary disease of interest is Pityriasis Rubra Pilaris (PRP), a rare and severe inflammatory skin disorder with sudden-onset full-body red, itchy, and scaly skin with thickening and painful fissuring of the palms and soles. Dr. Greiling conducted the first successful clinical trial with ixekizumab as a treatment for PRP, and continues to conduct scientific studies examining the immune and skin dysregulation mechanisms in PRP, as well as clinical research on the signs, symptoms, and quality of life impact of PRP. Dr. Greiling also has a background in studying how the microbiota interacts with the human immune system in autoimmune diseases such as lupus. 

View Dr. Greiling’s publication list

Research Focus: Severe cutaneous drug reactions, Morgellon’s disease 

Research Focus: Skin cancer, skin imaging technology 

Research Focus: Atopic dermatitis

Research Focus: Skin cancer, skin imaging technology 

Research Focus: Melanoma, drug repurposing

Olivia Lucero, M.D.
Adjunct Assistant Professor of Dermatology, School of Medicine

Dr. Lucero is a board-certified Dermatologist and Mohs Surgeon who specializes in cutaneous oncology and is the Associate Director for the OHSU High-Risk Cutaneous Oncology Clinic. Working closely with Dr. Brian Druker, her lab focuses on uncovering the pathophysiology of cutaneous carcinogenesis in high-risk skin cancer patients, and leveraging this for the development of targeted therapeutics. She is especially interested in the application of personalized medicine in the treatment of T-cell lymphoma in the form of therapeutic antibodies and engineered immunotherapy.