RGD Reference Report - Up-regulation of JAM-1 in AR42J cells treated with activin A and betacellulin and the diabetic regenerating islets. - Rat Genome Database

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Up-regulation of JAM-1 in AR42J cells treated with activin A and betacellulin and the diabetic regenerating islets.

Authors: Yoshikumi, Y  Ohno, H  Suzuki, J  Isshiki, M  Morishita, Y  Ohnishi, H  Yasuda, H  Omata, M  Fujita, T  Mashima, H 
Citation: Yoshikumi Y, etal., Endocr J. 2008 Aug;55(4):757-65. Epub 2008 May 28.
RGD ID: 7488940
Pubmed: PMID:18506084   (View Abstract at PubMed)

Pancreatic AR42J cells demonstrate the pluripotency in precursor cells of the gut endoderm and also provide an excellent model system to study the differentiation of the pancreas. Using the mRNA differential display technique, we identified junctional adhesion molecule-1 (JAM-1), a component of the tight junction, was highly up-regulated during the differentiation of AR42J cells, although junctions were not formed. The expression level of JAM-1 showed an up-regulation in the mRNA level after 3 hours and in the protein level after 24 hours in [activin A + betacellulin]-treated AR42J cells. The expressions of its signaling molecules, PAR-3 and atypical PKC lambda, also increased after the addition of activin A + betacellulin. When JAM-1 was over-expressed in [activin A + betacellulin]-treated AR42J cells, tagged-JAM-1 was observed in cytoplasm as vesicular structures and JAM-1 was colocalized with Rab3B and Rab13, members of the Rab family expressed at tight junctions. In streptozotocin-induced regenerating islets, the expression of JAM-1 was also up-regulated in the mRNA level and the protein level. JAM-1 might therefore play an important role in the differentiation of AR42J cells and the regeneration of pancreatic islets.

RGD Manual Disease Annotations    Click to see Annotation Detail View
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
Experimental Diabetes Mellitus  ISOF11r (Rattus norvegicus)7488940; 7488940 RGD 
Experimental Diabetes Mellitus  IEP 7488940 RGD 

Gene Ontology Annotations    Click to see Annotation Detail View

Biological Process
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
cell differentiation  IEP 7488940 RGD 

Cellular Component
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
cell-cell junction  IDA 7488940 RGD 

Objects Annotated

Genes (Rattus norvegicus)
F11r  (F11 receptor)

Genes (Mus musculus)
F11r  (F11 receptor)

Genes (Homo sapiens)
F11R  (F11 receptor)


Additional Information