RGD Reference Report - Pituitary adenylate cyclase-activating polypeptide attenuates streptozotocin-induced apoptotic death of RIN-m5F cells through regulation of Bcl-2 family protein mRNA expression. - Rat Genome Database

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Pituitary adenylate cyclase-activating polypeptide attenuates streptozotocin-induced apoptotic death of RIN-m5F cells through regulation of Bcl-2 family protein mRNA expression.

Authors: Onoue, S  Hanato, J  Yamada, S 
Citation: Onoue S, etal., FEBS J. 2008 Nov;275(22):5542-51.
RGD ID: 2314140
Pubmed: PMID:18959742   (View Abstract at PubMed)
DOI: DOI:10.1111/j.1742-4658.2008.06672.x   (Journal Full-text)

Oxidative stress, followed by the apoptotic death of pancreatic beta cells, is considered to be one of causative agents in the evolution of the type 2 diabetic state; therefore, the protection of beta cells can comprise an efficacious strategy for preventing type 2 diabetes. In the present study, RIN-m5F cells (i.e. the rat insulinoma beta cell line) were stimulated with streptozotocin, resulting in a time- and concentration-dependent release of lactate dehydrogenase. There appeared to be significant apoptotic cell death after 2 h of treatment with streptozotocin at 10 mM, as demonstrated by terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling staining and 2.6-fold activation of cellular caspase-3, an apoptotic enzyme. By contrast, some neuropeptides of the glucagon-secretin family and coenzyme Q(10), an endogenous mitochondrial antioxidant, could attenuate streptozotocin cytotoxicity, and especially pituitary adenylate cyclase-activating polypeptide (PACAP), at a concentration of 10(-7) M, exhibited 34% attenuation of lactate dehydrogenase release from streptozotocin-treated RIN-m5F cells. Quantitative RT-PCR experiments indicated the inhibitory effect of PACAP on streptozotocin-evoked up-regulation of pro-apoptotic factor (Noxa and Bax) and a 2.3-fold enhancement of Bcl-2 mRNA expression, a pro-survival protein, was also observed after addition of PACAP. The data obtained suggest the anti-apoptotic role of PACAP in streptozotocin-treated RIN-m5F cells through the regulation of pro-apoptotic and pro-survival factors.

Molecular Pathway Annotations    Click to see Annotation Detail View

RGD Manual Annotations

Objects Annotated

Genes (Rattus norvegicus)
Bax  (BCL2 associated X, apoptosis regulator)
Bcl2  (BCL2, apoptosis regulator)
Bcl2l1  (Bcl2-like 1)
Pmaip1  (phorbol-12-myristate-13-acetate-induced protein 1)

Genes (Mus musculus)
Bax  (BCL2-associated X protein)
Bcl2  (B cell leukemia/lymphoma 2)
Bcl2l1  (BCL2-like 1)
Pmaip1  (phorbol-12-myristate-13-acetate-induced protein 1)

Genes (Homo sapiens)
BAX  (BCL2 associated X, apoptosis regulator)
BCL2  (BCL2 apoptosis regulator)
BCL2L1  (BCL2 like 1)
PMAIP1  (phorbol-12-myristate-13-acetate-induced protein 1)


Additional Information