ImmunoX Faculty Directory

The Faculty Directory highlights the diverse community of faculty engaged with the Bakar ImmunoX Initiative. Use the filters to explore areas of expertise, connect across disciplines, and learn more about the people advancing immunology research and training at UCSF.

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Microbial Pathogenesis and Infectious Diseases
Leadership Committee
Anita Sil
The Sil Lab studies the fungal pathogen Histoplasma capsulatum, which is a soil organism that can infect and colonize cells of the innate immune system after inhalation into mammals. Their research is driven by two key questions. First, how do cells sense temperature and make a developmental switch from the soil to the host program? They focus on temperature because it is a sufficient signal to recapitulate the morphologic switch bettheyen Histoplasma filaments (the soil form) and yeast (the host form) in culture. This question is critical to understanding the basic biology of Histoplasma as theyll as a number of closely related fungi such as Blastomyces, Coccidioides, and Paracoccidioides, each of which is a ubiquitous pathogen of immunocompetent hosts in endemic areas. In fact, one of the fascinating evolutionary questions about these environmental fungi is how regulatory circuits have evolved to link morphology and virulence programs with growth at host is be an entry point to broader studies of host-fungal interactions, since it will define critical developmental changes that promote the expression of virulence traits, as theyll as delineate molecular landmarks that will allow us to stage the interactions of the fungus with host cells. Second, how does H. capsulatum defy the innate immune response to take up residence, often permanent, in immunocompetent hosts? The past ten years have witnessed an exponential increase in their understanding of the innate immune response to microbes, and yet, in the case of fungi, their insight is rudimentary at best. Their studies explore the molecular communication at the host-pathogen interface bettheyen H. capsulatum and the macrophage. H. capsulatum displays extremely robust macrophage colonization, so it is currently the best fungal candidate to probe the Achilles' heel of these powerful innate immune cells and determine novel mechanisms of virulence that have evolved in eukaryotic pathogens.
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Sil
Anita Sil
Professor and Department Chair
Autoimmunity
Member
Judith Ashouri-Sinha
The Ashouri lab is focused on understanding how aberrant immune cell signaling disrupts immune tolerance, resulting in autoimmune (AI) disease. We are particularly interested in T cell mechanisms that contribute to the onset of rheumatoid arthritis (RA), a debilitating disease affecting millions. A specific aim of the Ashouri lab is to identify antigen-activated T cells in RA in order to capture and profile arthritogenic clones and elucidate the earliest events in disease pathogenesis. Our work takes advantage of a specific reporter of T cell antigen receptor (TCR) signaling. Tracking the expression of this reporter of TCR signaling in murine and human T cells facilitates our ability to identify and study arthritis-causing T cells before and during RA disease development and addresses the following questions: 1) How are T cells that are relatively deficient TCR signaling able to mediate arthritis development? Our lab uses molecular and biochemical techniques to examine how chronic TCR signaling can enhance T cell sensitivity to cytokine signaling and its dysregulation in disease. 2) How are arthritis causing CD4 T cells initially triggered in disease and to what antigen do these T cells respond? We utilize multi-dimensional and high-throughput technologies including paired single-cell RNA and TCR-sequencing from mouse and human samples with significant potential to identify the TCR specificity, gene expression profile, and signaling networks of cells involved in antigen recognition in RA. Our model system provides a platform to track antigen-specific T cell responses in human diseases in which the inciting antigen is not known and could be broadly applied to other AI diseases, transplant rejection, cancer, and even checkpoint blockade.
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Sinha
Judith Ashouri-Sinha
Assistant Professor
Infection and Host Defense
Immunogenetics
Leadership Committee
Sara Suliman
The Suliman Lab builds on the foundation of previous human cohort studies to pursue the following directions:From systems biology to innate correlates of TB progression: 1) The lab is following up on candidate pathways identified through systems biology experiments performed on samples from human cohorts of TB progressors and healthy Mtb-exposed counterparts in Sub-Saharan Africa and South America. These genetic and transcriptional profiling studies point to candidate TB risk pathways including sodium/potassium ATPases and tyrosine metabolism enzymes in innate immune populations. The lab is functionally dissecting the roles of these genes using pharmacological inhibitors and CRISPR/Cas9 gene editing of primary human myeloid cells and Mtb infection experiments, followed by analysis of immunological and metabolic profiles, in order to define their roles in TB disease. 2) Point-of-care biomarkers to identify Mtb-exposed individuals at high risk of developing TB disease: Following previous studies on TB biomarkers and COVID-19 diagnostics, the lab leverages international collaborations and systems biology approaches to discover and validate easy-to-use biomarkers to identify individuals at high risk of progression to TB. The studies aim to down-select biomarkers with high accuracy for translation into point-of-care and near-patient prognostic biomarkers in diverse populations for active case finding, including those with other co-infections. 3) T cell immunity to SARS-CoV-2 and Mtb: The Severe Acute Respiratory Syndrome of Coronavirus-2 (SARS-CoV-2) and Mtb are the two leading causes of mortality from infectious diseases globally. Failure to contain SARS-CoV-2 can be a result of the evolution of escape mutations that evade T cell responses. Similarly, in TB, the activation states and memory phenotypes of T cells can determine the quality of adaptive immunity against Mtb. Therefore, the quality and breadth of T cell responses are critical determinants of protection against both pathogens. It is unclear how the co-infections with Mtb and SARS-CoV-2 influence the inflammatory milieu and antigen-specific T cell responses that correlate with protection from progression to TB disease or severe COVID-19. The Suliman lab studies antigen-specific T cell immunity to SARS-CoV-2 and Mtb in the context of co-infection with the two pathogens, evolving SARS-CoV-2 variants, and COVID-19 vaccine rollout.
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Suliman
Sara Suliman
Assistant Professor
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Associate
Hugo Gonzalez Velozo
The Gonzalez-Velozo Lab delves into the molecular mechanisms driving metastasis and tumor-host interactions. It is committed to advancing the understanding of cancer metastasis and the tumor microenvironment, particularly elucidating insights from the tumor-immune interface. The lab's studies integrate diverse disciplines, including cancer research, genomics, molecular biology, immunology, and computational biology. They include the first systematic study of human metastases at single-cell resolution and collaborations in areas such as crosstalk within the metastatic niche, tumor adaptation under stress in metastasis, and cancer immunology. Ongoing projects involve the study of chromatin accessibility at single-cell resolution, combined with single-cell transcriptomics, to define and characterize the gene regulatory networks (regulomes) that foster brain metastases from carcinomas in patients. Additionally, they are working on generating tumor-host assembloids, a novel tool that combines brain organoids derived from iPSCs with tumor organoids from brain metastases, aiming to study in vitro complex cellular circuits while preserving human biology in the system. Their work lies in the conceptual framework that metastatic fitness is intimately linked to cellular circuits and cell crosstalk within the metastatic niche, impacting both the composition and functional states of the tumor microenvironment.
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Velozo
Hugo Gonzalez Velozo
Assistant Adjunct Professor
Michael Waterfield
michael-waterfield

The Waterfield Lab’s main focus is to understand the basic mechanisms by which immune tolerance is broken. Specifically, the lab is interested in studying the role of epigenetics in the development of autoimmunity. In order to study the role of epigenetics in the development of autoimmunity, the lab utilizes a variety of novel conditional knockout mouse lines to study the effect of deletion of specific epigenetic proteins on immune tolerance.

Art Weiss
art-weiss

The Weiss Lab is interested in understanding how receptors involved in antigen recognition can initiate signal transduction events that regulate cell responses in the immune system. We know that receptors involved in antigen recognition functionally interact with tyrosine kinases and phosphatases, enzymes that regulate protein phosphorylation, to induce signaling pathways that regulate cellular responses and gene expression. We are using genetically selective small molecule inhibitors of kinases together with phosphatase mutants to study how thresholds for the initiation of immune responses are set and how feedback circuits influence responses. We would like to understand how the tyrosine kinases and phosphatases in these pathways are regulated and how they control cellular responses in development, in normal immune responses and in autoimmune diseases such as lupus and rheumatoid arthritis.

Arun Wiita
arun-wiita

The Wiita Lab aims to discover new ways to treat and ultimately cure cancer by harnessing the power of the immune system. His group specifically uses a combination of mass spectrometry-based proteomics, chemical biology, and computational strategies to identify novel immunotherapy targets in cancer, followed by advanced protein engineering and AI-based strategies to develop new therapies against these targets. The Wiita lab thus seeks to develop clinically-translatable, next-generation therapies, including engineered cellular therapies, protein-based biotherapeutics, and novel therapeutic delivery platforms, to address unmet needs in cancer care. In his clinical service, Dr. Wiita is a board-certified Clinical Pathologist and currently serves as the Interim Chair of the UCSF Department of Laboratory Medicine. Dr. Wiita also holds a joint appointment in the UCSF Dept. of Bioengineering and Therapeutic Sciences, is an Investigator at the Chan Zuckerberg Biohub, and is a Member of the Parker Institute for Cancer Immunotherapy. Reflecting his group's primary disease focus in hematologic malignancies (blood cancers), Dr. Wiita is also the Director of the UCSF Stephen and Nancy Grand Multiple Myeloma Translational Initiative Laboratory.

Catera Wilder
catera-wilder

The Wilder Lab's goal is to understand how innate immune functions of lung epithelial cells regulate the development and progression of lung immunopathogenesis. Specifically, they are interested in investigating distinct immune gene expression and cellular responses controlled by interferon-specific dynamic control of the transcription factor ISGF3.

Michael Wilson
michael-wilson

The Wilson Lab's research is focused on infectious and autoimmune diseases of the central nervous system. Our lab applies metagenomic and immune repertoire sequencing techniques as well as phage display autoantibody and viral antibody discovery technologies to enhance our understanding of the causes and immunopathogenesis of multiple sclerosis as well as autoimmune and infectious causes of meningoencephalitis. To fuel these inquiries, we have a large effort to biobank blood and cerebrospinal fluid samples from over 1,000 patients with a variety of neuroinflammatory diseases.

Owen Wolkowitz
owen-wolkowitz

The Wolkowitz Lab's broad focus is the identification of moderators and mediators of stress effects on psychiatric and comorbid physical health, with a goal of identifying novel targets for therapeutic intervention. Their group is currently examining the interactions between inflammatory factors, oxidative stress, neurotrophic factors, mitochondrial function, genetics and epigenetics and depressive symptoms, treatment response, neuroradiological profiles and aspects of cellular aging. Their lab works in close collaboration with the lab of fellow ImmunoX Member Synthia Mellon, specifically working to share data with other researchers examining the role of the immune system in cross-diagnostic pathology, and to add neuropsychiatric rating scales to other projects assessing immune function in diverse patients at UCSF.

Prescott Woodruff
prescott-woodruff

The Woodruff Lab's research comprises both clinical and translational research into a range of lung diseases including asthma, chronic obstructive pulmonary disease (COPD), and granulomatous lung diseases (e.g. sarcoidosis and hypersensitivity pneumonitis). These studies fall into three specific categories: 1) the identification of distinct molecular sub-phenotypes of these diseases; 2) the elucidation of disease-relevant mechanisms of airway inflammation and remodeling in the lung; 3) clinical trials of novel therapeutic approaches.

Jimmie Ye
jimmie-ye

The Ye Lab is interested in how the interaction between genetics and environment affect human variation at the level of molecular phenotypes. To study these interactions, our lab couples high-throughput sequencing approaches that measure cellular response under environmental challenges with population genetics where such measurements are collected and analyzed across large patient cohorts. We have developed novel experimental approaches that enable the large-scale collection of functional genomic data en masse and computational approaches that translate the data into novel biological insights. This approach is used to initially study primary human immune cells in both healthy and diseased patients to understand host pathogen interactions and its role in autoimmunity.

Jacob Young
jacob-young

Dr. Young's goal is to better understand the glioblastoma immune microenvironment by studying longitudinal microenvironment evolution and translating these biological discoveries into new therapies for patients with glioblastoma. Projects in the Young Lab use a combination of high-throughput single-cell and spatial analyses from human tissue obtained in the operating room with mechanistic and in vivo experiments from immunocompetent glioblastoma mouse models to explore how resistance mechanisms develop and tumors evade conventional immunotherapies. Currently, their preclinical work has identified IL6 blockade in combination with checkpoint inhibition as a promising strategy for glioblastoma.

Scott Zamvil
scott-zamvil

In the Zamvil Lab, our group employs models, including relapsing and spontaneous experimental autoimmune encephalomyelitis (EAE) to study activation and regulation of CNS Ag-specific T cells. In our early work, we demonstrated for the first time that autoantigen-specific T cell clones could cause clinical and histologic autoimmunity. In the last several years, we have applied our experience studying T cell recognition of myelin Ags in EAE and MS to identification of T cells that recognize aquaporin-4 (AQP4), the autoantigen in NMO. Our group provided the first evidence that AQP4-specific T cells exist in NMO patients and in mice. Currently, we are examining those elements that control selection of AQP4-specific T cells and evaluating how the gut microbiome may influence development of AQP4-specific T cells.

Julie Zikherman
julie-zikherman

The Zikherman Lab is interested in understanding how autoreactive B cells, despite chronic antigen engagement of the B cell receptor, are restrained from inappropriate activation and differentiation. We are interested in how this process is disrupted in autoimmune disease, and how tolerance mechanisms can be harnessed to treat autoimmunity. To do so, we are taking advantage of novel reporter mice in which autoreactive B cells are fluorescently marked (Nur77-eGFP BAC transgenic line). Current funded projects include dissecting the distinct roles of the IgM and IgD B cell receptor isotypes in regulating immune responses by autoreactive B cells. More recent work is focused on defining how Nur77 and related orphan nuclear hormone receptors function selectively to restrain activation of chronically antigen-activated B cells.