Evidence map›Paper›PMID 20872248›Full record

ArticleTransgenic research2011

Generation of antibody- and B cell-deficient pigs by targeted disruption of the J-region gene segment of the heavy chain locus.

M Mendicino, J Ramsoondar, C Phelps, T Vaught, S Ball, T LeRoith, J Monahan, S Chen, A Dandro, J Boone and 10 more

Open access · bronzeAbstract readEvaluation Study
In one paragraph

Article in Transgenic research, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
2.8field-weighted citation impact, top 9% 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

19 citing papers in PubMed, 47 citations in OpenAlex.

  1. Generation of IgMScientific reports · 2025
    Article
  2. Article
  3. Review
  4. Unraveling the role of B cells in the pathogenesis of an oncogenic avian herpesvirus.Proceedings of the National Academy of Sciences of the United States of America · 2018
    Article
  5. Review
  6. Respiratory nanoparticle-based vaccines and challenges associated with animal models and translation.Journal of controlled release : official journal of the Controlled Release Society · 2015
    Review
  7. Review
  8. The porcine innate immune system: an update.Developmental and comparative immunology · 2014
    Review
  9. Article
  10. Article
  11. Expression of recombinant antibodies.Frontiers in immunology · 2013
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Precision editing of large animal genomes.Advances in genetics · 2012
    Review
  17. Article
  18. An activated immune and inflammatory response targets the pancreas of newborn pigs with cystic fibrosis.Pancreatology : official journal of the International Association of Pancreatology (IAP) ... [et al.] · 2011
    Article
  19. Review
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

20 authors at 3 institutions in 1 country.

M MendicinoRevivicor, Inc., 1700 Kraft Drive, Blacksburg, VA 24060, USA.
J Ramsoondar
C Phelps
T Vaught
S Ball
T LeRoith
J Monahan
S Chen
A Dandro
J Boone
P Jobst
A Vance
N Wertz
Z Bergman
X-Z Sun
I Polejaeva
J Butler
Y Dai
D Ayares
K Wells
University of Iowa · USUniversity of Missouri · USVirginia–Maryland College of Veterinary Medicine · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A poly(A)-trap gene targeting strategy was used to disrupt the single functional heavy chain (HC) joining region (J(H)) of swine in primary fibroblasts. Genetically modified piglets were then generated via somatic cell nuclear transfer (SCNT) and bred to yield litters comprising J(H) wild-type littermate (+/+), J(H) heterozygous knockout (±) and J(H) homozygous knockout (-/-) piglets in the expected Mendelian ratio of 1:2:1. There are only two other targeted loci previously published in swine, and this is the first successful poly(A)-trap strategy ever published in a livestock species. In either blood or secondary lymphoid tissues, flow cytometry, RT-PCR and ELISA detected no circulating IgM(+) B cells, and no transcription or secretion of immunoglobulin (Ig) isotypes, respectively in J(H) -/- pigs. Histochemical and immunohistochemical (IHC) studies failed to detect lymph node (LN) follicles or CD79α(+) B cells, respectively in J(H) -/- pigs. T cell receptor (TCR)(β) transcription and T cells were detected in J(H) -/- pigs. When reared conventionally, J(H) -/- pigs succumbed to bacterial infections after weaning. These antibody (Ab)- and B cell-deficient pigs have significant value as models for both veterinary and human research to discriminate cellular and humoral protective immunity to infectious agents. Thus, these pigs may aid in vaccine development for infectious agents such as the pandemic porcine reproductive and respiratory syndrome virus (PRRSV) and H1N1 swine flu. These pigs are also a first significant step towards generating a pig that expresses fully human, antigen-specific polyclonal Ab to target numerous incurable infectious diseases with high unmet clinical need.

Indexed as

Disease Models, AnimalGene TargetingAnimalsAnimals, NewbornAntibodiesBacterial InfectionsB-LymphocytesCells, CulturedFibroblastsGenetic EngineeringHumansImmunoglobulin Heavy ChainsImmunoglobulin IsotypesImmunohistochemistryPoly ASwineAntibodiesImmunoglobulin Heavy ChainsImmunoglobulin IsotypesPoly A

Identifiers

PMID20872248
PMCPMC7089184
OpenAlexW2085668191

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.