Joshua Welch, PhD

Joshua Welch
Associate Professor of Computational Medicine and Bioinformatics, Medical School
Associate Professor of Electrical Engineering and Computer Science, College of Engineering
[email protected]
Available to mentor
Joshua Welch, PhD
Joshua Welch
Associate Professor
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  • Research Overview
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  • Qualifications

    • Postdoctoral Researcher
      Broad Institute of Harvard and MIT, United States
      2017 - 2018
      Postdoctoral Research

    Center Memberships

    • Center Member
      e-Health and Artificial Intelligence Initiative
    • Center Member
      Center for Cell Plasticity and Organ Design

    Research Overview

    I develop AI/ML approaches to decipher the link between molecular features and cellular phenotypes. By combining generative AI (autoencoders, diffusion models, and generative adversarial networks) with emerging single-cell experimental technologies, I aim to build predictive models of how cells will respond to genetic and chemical perturbations. Additionally, I perform experiments on iPS-derived neuron models to better model and treat neurodevelopment and neurological disease.

    Links

    • Welch Lab

    Recent Publications

    See All Publications
    • Journal Article
      Reprogramming the immune suppressive tumor microenvironment in glioma enhances the efficacy of immune-mediated gene therapy
      McClellan BL, Peña Agudelo JA, Mujeeb AA, Dabaja AA, Zhu Z, Raghuram S, Varela ML, Tronrud C, Banerjee K, Wei A, Calatroni C, Zhang LH, Romero LC, Oh P, Alghamri MS, Robbins A, Perricone M, Wang Y, Shay B, Sajjakulnukit P, Lyssiotis CA, Welch JD, Schwendeman A, Lowenstein PR, Castro MG. Molecular Therapy Oncology, 2026 Jun 18; 34 (2): DOI:10.1016/j.omton.2026.201215
    • Journal Article
      CytoSignal detects locations and dynamics of ligand-receptor signaling at cellular resolution from spatial transcriptomic data.
      Liu J, Manabe H, Qian W, Orikasa S, Ghaemmaghami J, Wang Y, Gu Y, Chu AKY, Gadhvi G, Song Y, McClinden P, Lama VN, Ono N, Welch JD. Nat Genet, 2026 Jun 10; DOI:10.1038/s41588-026-02624-9
      PMID: 42271087
    • Presentation
      Inferring cell differentiation and migration from spatial transcriptomic data
      Welch J. 2026 Jun 11;
    • Preprint
      Nuclear Speckles Regulate Splicing During Muscle Stem Cell Activation and Aging.
      Guzman SD, Duran P, Xiao Y, Song Y, Welch JD, He C, Aguilar CA. 2026 May 7; DOI:10.64898/2026.05.04.722644
      PMID: 42146392
    • Journal Article
      Single-cell multi-omic analysis of mesenchymal cells reveals molecular signatures and regulators of lung allograft fibrosis.
      Lu L, McLinden AP, Walker NM, Vittal R, Wang Y, Fattahi F, Russell ST, Combs MP, Welch JD, Lama VN. JCI Insight, 2026 Apr 23; DOI:10.1172/jci.insight.196651
      PMID: 42044158
    • Journal Article
      (116) Differential Midkine Expression in Mesenchymal Cells of Lung Transplant Chronic Lung Allograft Dysfunction (CLAD) Phenotypes
      Mehta MP, Vittal R, McLinden A, Lu L, Welch JD, Lama V. The Journal of Heart and Lung Transplantation, 2026 Apr 18; 45 (5): 54 - 55. DOI:10.1016/j.healun.2026.02.122
    • Journal Article
      Bayesian inference of RNA velocity incorporating timepoints, lineage bifurcations, and count data.
      Gu Y, Song Y, Blaauw D, Welch JD. PLoS Comput Biol, 2026 Mar 20; 22 (3): e1014060 DOI:10.1371/journal.pcbi.1014060
      PMID: 41860983
    • Preprint
      Mechanisms of HIV Latency in Hematopoietic Progenitors: GFI1 as a Key Regulator
      Onyango JA, Li C, Chen C, Disbennett WM, Virgilio MC, Painter MM, Terry VH, Ramnani B, Welch JD, Collins KL. 2026 Feb 23; bioRxiv, DOI:10.64898/2026.02.19.706859

    Featured News & Stories

    Computer generated image of a human brain with lighted up dots
    Health Lab

    New algorithmic tool enables to scientists to see cells “talk” to one another

    A new U-M study, featured in Nature Genetics, details a technique to infer cell-cell communication using spatial transcriptomics
    pink stain on microscopic slide
    Health Lab

    An AI model accurately predicts how cells end up in position inside tissues

    Understanding transitions from cell to tissue in space and over time: A new modeling tool from the Welch lab at Michigan Medicine.
    cover design of Molecular Systems Biology, August 4, 2025
    Department News

    A Welch lab publication is recognized in Molecular Systems Biology with a cover design

    A Welch lab publication is recognized in Molecular Systems Biology with a cover design The Welch lab developed PertubNet, a generative AI model that can predict shifts in cell state—changes in overall gene expression—in response to multiple types of unseen cellular perturbations, including responses to drugs. This tool was published in Molecular Systems Biology (Volume 21, Issue 8, 4 August 2025.) and was recognized with the opportunity to design the cover of the journal. 
    Great Minds, Greater Discoveries Stories

    Research Scout Scholar: Joshua Welch, PhD

    Meet Dr. Joshua Welch, a Great Minds Research Scouts scholar at the U-M Medical School.
    Thomas Chen, MS
    Department News

    Thomas Chen, M.S.: From U-M to Harvard/MIT

    Thomas Chen, M.S., graduated in Spring 2025 from the Gilbert S. Omenn Department of Computational Medicine and Bioinformatics (DCMB) with a Master's in Science degree. He started his bioinformatics studies at U-M as a senior student majoring in Microbiology, and attended DCMB’s Accelerated MS program. In June 2025, he will pursue his training to become a scientist-physician at the Harvard/MIT MD-PhD Program.
    Jialin Liu, Ph.D., visits Zion National Park
    Department News

    Jialin Liu defended his Ph.D. dissertation on spatial transcriptomic

    On March 21, 2025, Jialin Liu, Ph.D., defended his doctoral dissertation titled “Mapping Cell Fate Transitions from Single-Cell Multi-Omic and Spatial Transcriptomic Data.” His mentor was professor Joshua Welch, Associate Professor in the Gilbert S. Omenn Department of Computational Medicine and Bioinformatics (DCMB) and the Department of Computer Science and Engineering at the University of Michigan.