Evidence map›Paper›PMID 20351275›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2010

Oral delivery of bioencapsulated coagulation factor IX prevents inhibitor formation and fatal anaphylaxis in hemophilia B mice.

Dheeraj Verma, Babak Moghimi, Paul A LoDuca, Harminder D Singh, Brad E Hoffman, Roland W Herzog, Henry Daniell

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 86 papers.

0numbers the graph read from it
0cells of the map it votes in
86citing papers in PubMed
17.2field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

86 citing papers in PubMed, 146 citations in OpenAlex.

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26 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 2 institutions in 1 country.

Dheeraj VermaDepartment of Molecular Biology and Microbiology, College of Medicine, University of Central Florida, Orlando, FL 32816-2364, USA.
Babak Moghimi
Paul A LoDuca
Harminder D Singh
Brad E Hoffman
Roland W Herzog
Henry Daniell
University of Florida · USUniversity of Central Florida · US

Funding

Immunology of Factor IX Gene Transfer to LiverR01AI051390 · NIAID · UNIVERSITY OF FLORIDA · PI HERZOG, ROLAND W. · 2002 to 2022
$6.7M
Expression of Human Therapeutic Proteins in Transgenic Tobacco ChloroplastsR01GM063879 · NIGMS · UNIVERSITY OF CENTRAL FLORIDA · PI DANIELL, HENRY · 2002 to 2010
$2.0M
Bioencapsulated Factor IX for Oral Tolerance in Hemophilia BR21HL089813 · NHLBI · UNIVERSITY OF FLORIDA · PI HERZOG, ROLAND W. · 2007 to 2008
$372k
NHLBI NIH HHS R21 HL089813NIAID NIH HHS R01 AI051390NIAID NIH HHS R01 AI/HL51390NIGMS NIH HHS R01 GM063879NIGMS NIH HHS R01 GM 63879
6 · The paper itself

Abstract

To address complications of pathogenic antibody or life-threatening anaphylactic reactions in protein replacement therapy for patients with hemophilia or other inherited protein deficiencies, we have developed a prophylactic protocol using a murine hemophilia B model. Oral delivery of coagulation factor IX fused with cholera toxin beta-subunit (with or without a furin cleavage site; CTB-FFIX or CTB-FIX), expressed in chloroplasts (up to 3.8% soluble protein or 0.4 mg/g leaf tissue), bioencapsulated in plant cells, effectively blocked formation of inhibitory antibodies (undetectable or up to 100-fold less than controls). Moreover, this treatment eliminated fatal anaphylactic reactions that occurred after four to six exposures to intravenous F.IX. Whereas only 20-25% of control animals survived after six to eight F.IX doses, 90-93% of F.IX-fed mice survived 12 injections without signs of allergy or anaphylaxis. Immunostaining confirmed delivery of F.IX to Peyer's patches in the ileum. Within 2-5 h, feeding of CTB-FFIX additionally resulted in systemic delivery of F.IX antigen. This high-responder strain of hemophilia B mice represents a new animal model to study anaphylactic reactions. The protocol was effective over a range of oral antigen doses (equivalent to 5-80 microg recombinant F.IX/kg), and controlled inhibitor formation and anaphylaxis long-term, up to 7 months (approximately 40% life span of this mouse strain). Oral antigen administration caused a deviant immune response that suppressed formation of IgE and inhibitory antibodies. This cost-effective and efficient approach of antigen delivery to the gut should be applicable to several genetic diseases that are prone to pathogenic antibody responses during treatment.

Indexed as

Administration, OralAnaphylaxisAnimalsChloroplastsDisease Models, AnimalDrug Delivery SystemsFactor IXGenetic VectorsHemophilia BImmunoglobulin EMaleMiceMice, Inbred C3HModels, GeneticNicotianaFactor IXImmunoglobulin E

Identifiers

PMID20351275
PMCPMC2872434
OpenAlexW1982261885

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.