Key result
The mouse neuroblastoma cell line Neuro-2a expresses angiotensin II receptor subtypes AT1A, AT1B, and AT2, and exhibits InsP3 formation following AngII induction that is abolished by losartan.
The mouse neuroblastoma cell line Neuro-2a expresses functional AT1A and AT2 receptors, establishing it as a viable in vitro model for studying angiotensin II receptor interactions.
No immediate clinical implications; leaves open Neuro-2a utility as a human-relevant model for AngII research.
In this study, the mouse neuroblastoma cell line Neuro-2a was analyzed for expression of angiotensin II receptors. Reverse-transcriptase polymerase chain reaction (RT-PCR) showed that Neuro-2a cells express mRNA of angiotensin II (AngII) receptor subtypes AT1A, AT1B, and AT2. Analysis of Neuro-2a cells by Western blotting revealed AT1 and AT2 receptor protein expression. The predominant molecular weights were determined to be 50.4 kDa for the AT1 receptor and 62.4 kDa for the AT2 receptor. Observation of AT1 and AT2 receptor localization within Neuro-2a cells using immunocytochemistry showed distribution similar to other G-protein coupled receptors with diffuse distribution in the cytosol, perinuclear enrichment and accumulation of receptors on the outer cellular periphery with extension into the neurites. Furthermore, we observed InsP3 formation following AngII induction that could be abolished in presence of the AT1A receptor antagonist losartan. The results clearly show expression of the AngII receptor types AT1A and AT2 in the Neuro-2a cell line. We conclude that Neuro-2a cells represent an interesting model cell line for study of mechanisms that control the interplay between these receptors.
No takes yet. Share an insight, caveat, or question.
Hoffmann et al. (2003) studied Mouse neuroblastoma cell line Neuro-2a. Angiotensin II vs. Losartan (antagonist) was evaluated on Expression and localization of angiotensin II receptors and InsP3 formation. The mouse neuroblastoma cell line Neuro-2a expresses angiotensin II receptor subtypes AT1A, AT1B, and AT2, and exhibits InsP3 formation following AngII induction that is abolished by losartan.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: