Immunity at the edge: cell-intrinsic roles for intestinal epithelial cells in host immunity
Bibliographic record
Abstract
As the barrier between the contents of the intestines and the rest of the body, intestinal epithelial cells (IEC) occupy a crucial niche for the health of the organism. They are responsible for nutrient absorption and transfer, barrier maintenance, and interactions with the massive community of microorganisms that live in the gut. While this community primarily includes commensal microbes, many pathogens use the gastrointestinal tract as an initial site of infection. IEC are important as a physical barrier, but a growing body of research demonstrates their importance as active participants in host immunity. In this review, we discuss the role of IEC in responding to infection by intracellular bacteria, parasites, and viruses. IEC express an array of intracellular sensors to rapidly detect invading pathogens and initiate cytokine production. In addition, IEC are equipped to present antigen to T cells, and express co-stimulatory molecules that enhance or limit T cell responses, although the impact of these interactions remains unclear. Determining how IEC participate in host immunity and pursuing the open questions we identify in this review will be broadly important for understanding infection and immunity in the gastrointestinal tract.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".