About the Lab

Mission

The Kratimenos Lab, based at the Sheikh Zayed Institute for Pediatric Surgical Innovation at Children's National Hospital in Washington, D.C., is dedicated to understanding the complex mechanisms underlying prematurity and its associated co-morbidities, recognizing that early birth triggers a cascade of interconnected pathophysiological processes that extend far beyond isolated organ systems.

Research Strategies & Technologies

Our research program integrates cutting-edge spatial transcriptomics, advanced neuroimaging, comprehensive neuropathological analysis, and innovative computational approaches to decode how prematurity disrupts normal developmental trajectories across multiple organ systems, with particular emphasis on brain development.

Systemic Vulnerabilities

By leveraging a unique biorepository of human neonatal tissue samples combined with sophisticated analytical techniques, we are uncovering how maternal immune activation, hypoxia, and other perinatal insults create systemic vulnerabilities that manifest as distinct yet potentially interconnected conditions. Our multidisciplinary approach spans from subcellular resolution of gene expression patterns to whole-brain anatomical assessments, allowing us to connect molecular mechanisms to clinical phenotypes and understand why some preterm infants develop multiple co-morbidities while others remain relatively unaffected.

Therapeutic Targets

Central to our research philosophy is exploring how prematurity creates vulnerabilities that may contribute to devastating complications such as necrotizing enterocolitis and sudden infant death syndrome, while recognizing that these conditions remain incompletely understood with potentially multifactorial etiologies. We investigate how early exposure to inflammatory signals, whether from maternal immune activation or intestinal injury in NEC, creates systemic changes affecting multiple developing systems, from the gut-brain axis to the cerebellar-brainstem circuits that regulate vital cardiorespiratory functions. Our work examines how intestinal inflammation in NEC selectively targets pontine regions governing feeding coordination and auditory processing. It also investigates how prematurity may disrupt cerebellar circuits essential for arousal and autoresuscitation, potentially increasing vulnerability to SIDS through mechanisms that remain to be fully elucidated. Using maternal immune activation and hypoxia mouse models of prematurity, we evaluate how therapeutic interventions like physiotherapy and environmental enrichment can improve neurobehavioral coordination and potentially modify risk factors for these serious complications.

Collaboration, Funding & Impact

Our laboratory's impact is amplified through strategic collaborations and generous funding support. We are privileged to receive $1.1 million from the Raynor Cerebellum Project to advance our understanding of prematurity-induced cerebellar injury. This support enables our collaborative efforts with Johns Hopkins University School of Medicine, where we combine complementary expertise—our strengths at Children's National in neonatal brain injury, human neonatal neuropathology, brain bioenergetics, and cerebellar molecular physiology with JHU's excellence in computational spatial transcriptomics and neuroimmunology.

The Kratimenos Lab is committed to transforming our mechanistic understanding of prematurity's far-reaching effects into comprehensive care strategies that address the complex needs of preterm infants. Through this collaborative approach, which bridges basic neuroscience, systems biology, and clinical application, we aim to improve outcomes for preterm infants by better understanding the biological basis of their vulnerabilities—ultimately providing hope to families navigating the challenging landscape of prematurity and its potential consequences.