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
Susan Lynch
susan-lynch

The Lynch Lab’s research focuses on microbial communities associated with chronic inflammatory diseases of the gastrointestinal and respiratory tracts. Using clinical samples to inform studies using murine models, they examine relationships bettheyen microbial community composition and function in an effort to better understand microbial-host interplay in the context of chronic inflammatory disease.

Averil Ma
averil-ma

The Ma Lab studies the molecular and cellular mechanisms underlying inflammation and cancer. They have focused upon a subset of ubiquitin regulating proteins that play dominant roles in prevent inflammation and cancer. A20 and several biochemically related binding partners are potent regulators of ubiquitination and disease. These proteins exert several biochemical functions to (1) prevent inflammatory diseases and cancer in human patients; (2) prevent inflammation and cancer in mice; (3) restrict (NF-κB) signaling and immune cell activation; (4) restrict inflammasome activation; (5) prevent multiple forms of cell death; and (6) preserve tissue integrity. Patients born with haploinsufficient A20 genes develop early onset inflammatory diseases. Ongoing studies utilize genetic engineering, cell signaling, and mass spectrometry techniques to unravel the mechanisms by which A20 and related proteins regulate ubiquitin dependent signals and tissue homeostasis. They have recently generated a series of A20 knock-in mice to dissect the biochemical mechanisms by which A20 performs these critical functions. Translational research in the laboratory seeks to align insights from biochemical and mouse based biology with the biology of human peripheral blood cells and intestinal tissues. These efforts should improve their understanding of human disease subtypes and ultimately develop novel approaches of treating inflammatory and malignant diseases.

Tippi MacKenzie
tippi-mackenzie

The MacKenzie Lab works on understanding maternal-fetal immunology with the goal of treating patients with birth defects using in utero stem cell transplantation. They also study the immune basis of pregnancy complications that arise due to a breakdown in maternal-fetal tolerance, such as preterm labor. They work on mouse models as theyll as patient samples and have a robust program for biobanking of human samples that can be useful to the group. The lab has collaborated with many members of the Immunology community and look forward to strengthening these collaborations.

Ajay Maker
ajay-maker

The Maker Lab has focused the efforts of its research career on expanding the role of immunotherapy for gastrointestinal tumors and they have aligned their clinical practice to coincide with these research interests. Their research program has identified an immunostimulatory cytokine capable of activating and supporting the proliferation of antigen-specific T-cells to incite an anti-tumor immune response in colorectal liver metastases. This strategy is currently being investigated in combination with oncolytic viruses and immune checkpoint blockade to elicit complete tumor responses. Their lab also investigates novel drug combinations that stimulate immunogenic cell death and generate anti-tumor immune responses to treat GI tumor liver metastases. As part of these studies, they have developed multiple unique orthotopic animal models in which to study solid organ metastases that has led to multiple collaborations.

Alex Marson
alex-marson

The Marson Lab aims to understand the genetic circuits that control human immune cell function in health and disease. They have begun to identify how genetic risk variants for autoimmune diseases disrupt immune cell circuits, and how pathogenic circuits may be targeted with novel therapeutic. They have developed new tools for efficient CRISPR genome engineering in primary human T cells and now they are pursuing a comprehensive strategy to test how coding and non-coding genetic variation control essential programs in the human immune system. Genome engineered human T cells hold great potential for the next generation of cell-based therapies for cancer, autoimmunity and infectious diseases.

Mehrdad Matloubian
mehrdad-matloubian

The Matloubian Lab's interests broadly lie in mechanisms of immune mediated diseases and approaches for a better understanding of the molecular bases of such processes. Our goal is to provide therapeutic treatment of autoimmune and inflammatory diseases through a better understanding of the involved pathways.

Michael McManus
michael-mcmanus

The McManus Lab uses uses systematic and synthetic approaches to study fundamental processes in gene regulation and cell biology, focusing on two main areas: 1) cell:cell interactions and 2) high-content functional genomics screens. These efforts aim to uncover how cells communicate, respond to their environment, and develop innovative tools to explore gene function.We investigate molecular mechanisms of cellular communication in both normal physiology and disease. By leveraging advanced tools and interdisciplinary approaches, we explore how these interactions influence development, immunity, and disease progression. A major focus is engineering cells to deliver therapies. Using genome-scale functional screens, we map genes and pathways regulating cellular behavior, shedding light on the dark matter of the genome. Our platforms combine CRISPR-based perturbations, deep sequencing, and imaging to generate detailed maps of gene function.Our lab creates novel technologies, from synthetic biology tools to high-throughput screening systems, enabling millions of parallel experiments. Operating at the intersection of immunology, developmental biology, and cancer research, we foster a collaborative environment for transformative discoveries that advance health and address complex diseases.

Sindy Mellon
sindy-mellon

The Mellon Lab's resarch is focused on indentifying novel nuclear factors that regulate the transcription of the genes encoding some steroid synthesizing enzymes in the gonads and in the developing nervous system, and studies their mechanisms of action and regulation in normal and diseased gonadal and neuronal tissues. Her laboratory has also recently discovered that neurosteroids, steroids produced specifically in the brain, can directly influence nerve cell growth, development, neuroinflammation, and behavior. Working in conjunction with the Wolkowitz Lab, we are 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.

Kristen Mengwasser
kristen-mengwasser

Dr. Kristen Mengwasser is a physician-scientist rheumatologist, studying how autoreactive B cells contribute to human autoimmune disease. Her work involves applying genetic and molecular tools to search for the antigenic drivers and functional states of pathogenic B cells in patients with lupus, myositis, and spondyloarthritis. This work integrates high-throughput screening, CRISPR perturbation, and antigen discovery platforms applied to primary human cells and patient tissue. Ongoing projects include construction of a mammalian antigen discovery platform that will map paired antibody and B cell receptor specificities in human autoimmune diseases.  In parallel, she is engineering human spleen and tonsil organoids to model autoimmunity ex vivo, and she is performing PERTURB-seq screens in primary human B cells.

Simone Minnie
simone-minnie

The Minnie Lab is a tumor immunology lab with a focus on the differentiation of exhausted CD8 T cells in the bone marrow tumor microenvironment. They study multiple classes of immunotherapies, including antibodies, immunomodulatory drugs, adoptive cell therapies, and synthetic cytokines. Their mission is to leverage a mechanistic, hypothesis-driven approach to inform clinical translation of immunotherapies for patients.

Anna Molofsky
anna-molofsky

The  Molofsky Lab’s main goal is to define the role of glia and their immune roles  in brain development. Our lab uses a combination of transcriptomic analysis  and mouse genetics to discover novel roles for glia in synapse remodeling in  the developing mouse brain. We are particularly interested in the  communication astrocytes and microglia, two important cell types that respond  to stress and immune activation. We recently identified the astrocyte-encoded  cytokine Interleukin-33 as a key regulator of microglial synapse engulfment  and demonstrated that it is required for normal synapse numbers and circuit  function. Our lab continues to investigate brain-immune cross talk in synapse  homeostasis during development, after injury, and in the context of brain plasticity  and learning. These studies will form the basis for a new understanding of  how the immune system impacts neurodevelopmental diseases including autism, epilepsy, and schizophrenia.

Ari Molofsky
ari-molofsky

The Molofsky Lab's goals are to understand the function and regulation of tissue resident lymphocytes in settings of tissue development, remodeling, infection, and pathology while providing a strong and supportive environment for their research trainees. By understanding the physiologic roles of tissue-resident immune cells and their regulation, they hope to define novel pathways that can be targeted in diverse human disease, including obesity/type 2 diabetes, allergic pathologies (asthma, allergy, atopic dermatitis), and neuropsychiatric disease. They are focused on type-2 immune-associated lymphocytes, including group 2 innate lymphoid cells (ILC2) and subsets of regulatory T (Treg) cells, and the ‘niche’ signals involved in their regulation.  These recently appreciated tissue resident cells are early organizers of tissue remodeling and first responders during tissue damage and infection, positioning them as key mediators of tissue health and disease.