About

Robert L Mauck, PhD, is the Mary Black Ralston Professor of Education and Research in Orthopaedic Surgery at the University of Pennsylvania. He is a Senior Research Career Scientist and Co-Director of the Translational Musculoskeletal Research Center at the Corporal Michael J. Crescenz VA Medical Center in Philadelphia. Dr. Mauck's research program focuses on the engineering and mechanobiology of musculoskeletal tissues, with particular interest in restoring articular cartilage, the knee meniscus, and the intervertebral disc. His team employs mechanical and molecular analyses to explore native tissue structure-function-phenotype relationships in health and disease, using this information to develop technologies that enhance tissue regeneration. His work investigates progenitor cell function and efficacy across various biomaterial contexts and multiple length scales, from subcellular biophysical properties to engineered systems in large animal models. Supported by funding from the NIH, the Department of Veterans Affairs, and private foundations, Dr. Mauck has published over 310 manuscripts cited more than 20,000 times and has mentored more than 40 PhD, MD-PhD, and VMD-PhD students and postdoctoral fellows.

Research topics

• Anatomy
• Pathology
• Medicine
• Cancer research
• Cell biology
• Materials science
• Biophysics
• Biology

Selected publications

• Data supporting Woodworth et al. 2026

  Figshare · 2026-04-13

  datasetOpen access

  Data supporting the publication entitled "Expansion Microscopy reveals changes in cellular and extracellular structures between healthy and perturbed tendons" by Woodworth et al

  PublisherDOI

• Inhibition of fibroblast activation protein partially restores the homeostatic phenotype of mechanoactivated synoviocytes

  Osteoarthritis and Cartilage · 2026-03-01

  article
  PublisherDOI

• Data supporting Woodworth et al. 2026

  Figshare · 2026-04-13

  datasetOpen access

  Data supporting the publication entitled "Expansion Microscopy reveals changes in cellular and extracellular structures between healthy and perturbed tendons" by Woodworth et al

  PublisherDOI

• Revealing the biophysics of lamina-associated domain formation by integrating theoretical modeling and high-resolution imaging

  Nature Communications · 2025-08-25 · 12 citations

  articleOpen access

  Chromatin-lamina interactions regulate gene activity by forming lamina-associated domains (LADs), which contribute to cellular identity through gene repression. However, the strength of these interactions and their responsiveness to environmental cues remain unclear. Here, we develop a theoretical framework to predict LAD morphology in human mesenchymal stem cells (MSCs), whose differentiation potential depends on the stiffness of the microenvironment. Our model integrates chromatin-lamina interactions with histone modifications, revealing a bimodal distribution of chromatin-lamina affinity shaped by nuclear heterogeneities such as nuclear pores. We predict that contractility-driven translocation of histone deacetylase 3 (HDAC3) enhances chromatin-lamina affinity, leading to LAD thickening on soft substrates-a prediction validated through imaging and functional perturbations. Notably, in tendinosis, a condition marked by collagen degeneration and tissue softening, LAD thickening mirrors the behavior of MSCs on soft substrates, highlighting how microenvironmental mechanics influence genome organization and stem cell fate.

  PublisherOA PDFDOI

• A Human Progenitor Cell-Based Tissue Engineered Intervertebral Disc

  Tissue Engineering Part A · 2025-09-05

  article

  3D culture environment. As a result, discogenic cells deposited more matrix overall than did MSCs. That matrix was distinct between the NP and AF analogs of the tissue-engineered IVDs while also being more homogeneous within each region. Most importantly, unlike both MSC groups, discogenic cells deposited little to no collagen X, suggesting that discogenic eDAPS possess a more stable regional phenotype that will be less susceptible to hypertrophy and downstream calcification. Overall, DiscGenics's discogenic NP and AF cells made compositionally and mechanically superior eDAPS when compared with both human and goat MSCs, with only minor differences between attachment- and suspension-derived discogenic cell eDAPS, supporting their use as a cell source for the creation of human-scale living whole disc replacements.

  PublisherDOI

• Hydrogel Design to Understand and Guide 3D Cell Migration

  Regenerative Engineering and Translational Medicine · 2025-04-24 · 1 citations

  articleOpen access

  Purpose: The extracellular environment is critical for cell migration in three-dimensions (3D), which has been understudied when compared to cell migration on two-dimensional (2D) substrates. In 3D, cells must degrade or remodel their surroundings to overcome barriers to migration or find paths that act as migration routes. Methods: We performed a literature search for studies related to the engineering of hydrogels to understand and control cell migration. Results: This review highlights the cell-intrinsic machinery that is required for migration, describes how cell migration can be modeled in vitro, and provides examples where hydrogels have been designed with permissive extracellular cues that enhance cell migration for biomedical applications. Conclusions: Hydrogels can be engineered to mimic many features of the extracellular space to help us better understand the interplay between cells and their environment and interpret how these complex processes support or limit cell migration. With this understanding, hydrogels can be designed to guide cellular migration, particularly in the context of tissue repair and regenerative medicine. Lay Summary: Cell movement is important in both healthy and diseased tissues. An understanding of how cells migrate and the development of methods to control their migration can be utilized to improve patient therapies in the future in applications such as tissue repair and regeneration. Hydrogels are water-swollen materials that mimic many features of tissues. This allows their use to understand how cells respond to various features in their environment, as well as for therapeutic materials in tissue repair. This review highlights advances on these topics.

  PublisherOA PDFDOI

• Synovial changes in osteoarthritis: symptom or disease driver?

  Connective Tissue Research · 2025-09-03 · 2 citations

  articleSenior author

  Osteoarthritis (OA), long regarded as simply a disease of articular cartilage degeneration, has increasingly been recognized as a complex disorder involving multiple joint tissues, including the synovium. This review explores the emerging evidence that synovial changes seen in OA are not merely secondary to cartilage breakdown but may actively drive OA progression. We detail the physiological role of the synovium in joint homeostasis and highlight pathological remodeling processes, such as synovial hyperplasia, immune cell infiltration, and fibroblast activation, that contribute to joint degeneration. Mechanistic insights implicate fibroblast-like synoviocytes and synovial macrophages in initiating and perpetuating inflammatory and catabolic cascades that alter synovial fluid composition, impair cartilage integrity, and exacerbate disease symptoms. Clinical and preclinical data increasingly link synovitis and synovial damage to structural disease progression and pain, underscoring their prognostic and therapeutic significance. Despite promising targets, effective disease-modifying therapies remain elusive due to the molecular complexity and clinical heterogeneity of the disease and limitations in early diagnostic evaluations. To overcome this, innovative research methods, improved diagnostic tools, and interdisciplinary collaboration will be critical. Collectively, this work advocates for a paradigm shift that the synovium is a central player in OA pathogenesis and a viable target for therapeutic intervention.

  PublisherDOI

• In Vivo Measurements Reveal Increased Nucleus Pulposus Lactate and Oxygen Concentrations in a Goat Model of Intervertebral Disc Degeneration

  JOR Spine · 2025-05-27 · 4 citations

  articleOpen access

  Introduction: Intervertebral disc degeneration is strongly implicated as a cause of low back pain. Although the precise pathophysiological mechanisms remain elusive, perturbations in nutrition that adversely impact the cellular microenvironment of the central nucleus pulposus (NP) may be contributing factors. A comprehensive understanding of this microenvironment, including changes in nutrient availability as a function of degeneration, is critical for the development of effective cell-based treatments. The goal of this study was to adapt brain tissue oxygen probes and microdialysis catheters for in situ determination of relative NP oxygen, glucose, and lactate levels in a preclinical goat model of disc degeneration. Methods: Following ex vivo technical refinement in bovine caudal discs, baseline metabolite measurements were performed in vivo in the lumbar discs of 3 large frame goats. Degeneration was then induced via injection of chondroitinase ABC (ChABC) into the NP, and measurements were repeated after 12 weeks. Degeneration severity was graded using magnetic resonance imaging (MRI) and histology, and vertebral endplate porosity was assessed using microcomputed tomography. Results: Oxygen and lactate levels in goat NPs were significantly higher in degenerate compared to healthy discs, while glucose levels were not significantly different. ChABC-injected discs exhibited higher vertebral endplate porosity, worse histological and MRI grades, and a spectrum of cartilage endplate damage compared to healthy discs. There were significant positive correlations between MRI grade and both NP oxygen and lactate levels. Discussion: We successfully adapted techniques including surgical placement, equilibration time, flow rate, and detection method for in situ measurement of oxygen, glucose, and lactate in a goat model of disc degeneration. Interestingly, while increased lactate with degeneration was expected, increased oxygen levels were unexpected. Our findings may, in part, be explained by associated alterations in disc and endplate structure, and motivate future studies to comprehensively establish the underlying mechanisms in this model.

  PublisherOA PDFDOI

• EPIC-26 Longitudinal Analyses of Prostatic Urethral Lift Implant with Stereotactic Ablative Body Radiotherapy for Men with Prostate Cancer and Benign Prostatic Hyperplasia

  International Journal of Radiation Oncology*Biology*Physics · 2025-09-01

  articleOpen access
  PublisherOA PDFDOI

• Data supporting Kim et al 2025

  Figshare · 2025-07-22

  datasetOpen access

  Data supporting the publication entitled "O-SNAP: A comprehensive pipeline for spatial profiling of chromatin architecture" by Kim et al.

  PublisherDOI

Recent grants

• Engineered Developmental Microenvironments: Cartilage Formation and Maturation

  NIH · $2.5M · 2009–2026

• Training Program in Musculoskeletal Research

  NIH · $6.1M · 1976–2028

• RR&D Senior Research Career Scientist Award

  NIH · 2020–2031

• Bioactive Injectable Implants for Functional Intervertebral Disc Regeneration

  NIH · 2026–2029

• NIH Grant R01EB008722

  NIH · $3.0M · 2019

Frequent coauthors

• George R. Dodge

  University of Pennsylvania

  153 shared

• Jason A. Burdick

  University of Colorado Boulder

  141 shared

• Jaimo Ahn

  132 shared

• Mara L. Schenker

  124 shared

• Samir Mehta

  121 shared

• Sarah E. Gullbrand

  109 shared

• Lachlan J. Smith

  University of Sydney

  95 shared

• Harvey E. Smith

  89 shared

Labs

• Translational Musculoskeletal Research CenterPI

Education

• PhD, Biomedical Engineering

  Columbia University

  2003

Awards & honors

• Mary Black Ralston Professor for Education and Research in O…
• Member, Institute for Translational Medicine and Therapeutic…
• Member, Penn Center for Musculoskeletal Disorders
• Member, Institute for Medicine and Engineering
• Member, Institute on Aging