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Record W7133073058

Genome-wide analysis of human peripheral leukocyte gene expression

2003· dissertation· W7133073058 on OpenAlexfundno aff
Jun Ma

Bibliographic record

VenueTSpace · 2003
Typedissertation
Language
FieldImmunology and Microbiology
TopicAtherosclerosis and Cardiovascular Diseases
Canadian institutionsnot available
FundersUniversity of Toronto
KeywordsMajor histocompatibility complexGeneImmune systemGene expressionComplementary DNAIn silicoInnate immune systemExpressed sequence tagHuman leukocyte antigen
DOInot available

Abstract

fetched live from OpenAlex

Human peripheral leukocytes are the key operatives in the human immune network, mediating immune responses through both innate and acquired immunity. While much progress has been made to elucidate the mechanisms of leukocyte functions, our understanding of the genetic blueprint of leukocytes and the molecular basis of their functioning is far from complete. This project was started in 1997 and aimed to profile gene expression of human peripheral leukocytes and to identify novel leukocyte-specific genes. More than 15,000 ESTs were generated from an adult leukocyte cDNA library, representing over 7,000 unique genes—or approximately one-third to one-half of the total number of genes expressed in leukocytes. During this project, we identified a novel EST showing sequence similarity to members of the C-type lectin superfamily. Further characterization revealed that this gene, CLEC-6, was a leukocyte-specific gene located in the C-type lectin superfamily cluster at chromosome 12q13, and generated a saccharide-modified polymer that showed no mannose-affinity. In order to identify genes differentially expressed in leukocytes during the immune system maturation, we generated over 5,000 umbilical cord blood ESTs. Northern in silico revealed that genes involved in the synthesis and functioning of MHC I molecules, including four MHC I molecules and beta-microglobulin, were down-regulated in the umbilical cord blood. To expand the utility of our leukocyte-derived ESTs, we developed a “LeukoChip” containing nearly 6,000 unique genes. With cDNA microarray, we explored the differential expression profile of coronary artery disease leukocytes, identified the up-regulated expression of three leukocyte-secreted proteins, and suggested the potential role of peripheral leukocyte in systemic inflammation during atherogenesis. In summary, the present leukocyte gene-profiling project combines genomic, computational and conventional molecular biology approaches to provide a basic molecular foundation that will be important for understanding gene expression and regulation in leukocyte function, development and pathogenesis.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.001
Threshold uncertainty score0.003

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.001
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0010.000

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.

Opus teacher head0.017
GPT teacher head0.289
Teacher spread0.273 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

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".

Quick stats

Citations0
Published2003
Admission routes1
Has abstractyes

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