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Article

Identification of Novel Adenylyl Cyclase 5 (AC5) Signaling Networks in D1 and D2 Medium Spiny Neurons using Bimolecular Fluorescence Complementation Screening

by
Trevor B. Doyle
1,
Brian S. Muntean
2,
Karin F. Ejendal
1,
Michael P. Hayes
1,
Monica Soto-Velasquez
1,
Kirill A. Martemyanov
2,
Carmen W. Dessauer
3,
Chang-Deng Hu
1,4 and
Val J. Watts
1,4,5,*
1
Medicinal Chemistry & Molecular Pharmacology, Purdue University, West Lafayette, IN 47906, USA
2
Department of Neuroscience, The Scripps Research Institute, Jupiter, FL 33458, USA
3
Department of Integrative Biology & Pharmacology, McGovern Medical School, University of Texas Health Science Center, Houston, TX 77030, USA
4
Purdue Institute of Drug Discovery, Purdue University, West Lafayette, IN 47906, USA
5
Purdue Institute for Integrative Neuroscience, Purdue University, West Lafayette, IN 47906, USA
*
Author to whom correspondence should be addressed.
Cells 2019, 8(11), 1468; https://doi.org/10.3390/cells8111468
Submission received: 24 October 2019 / Revised: 15 November 2019 / Accepted: 15 November 2019 / Published: 19 November 2019
(This article belongs to the Special Issue New Advances in Cyclic AMP Signalling)
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Abstract

Adenylyl cyclase type 5 (AC5), as the principal isoform expressed in striatal medium spiny neurons (MSNs), is essential for the integration of both stimulatory and inhibitory midbrain signals that initiate from dopaminergic G protein-coupled receptor (GPCR) activation. The spatial and temporal control of cAMP signaling is dependent upon the composition of local regulatory protein networks. However, there is little understanding of how adenylyl cyclase protein interaction networks adapt to the multifarious pressures of integrating acute versus chronic and inhibitory vs. stimulatory receptor signaling in striatal MSNs. Here, we presented the development of a novel bimolecular fluorescence complementation (BiFC)-based protein-protein interaction screening methodology to further identify and characterize elements important for homeostatic control of dopamine-modulated AC5 signaling in a neuronal model cell line and striatal MSNs. We identified two novel AC5 modulators: the protein phosphatase 2A (PP2A) catalytic subunit (PPP2CB) and the intracellular trafficking associated protein—NSF (N-ethylmaleimide-sensitive factor) attachment protein alpha (NAPA). The effects of genetic knockdown (KD) of each gene were evaluated in several cellular models, including D1- and D2-dopamine receptor-expressing MSNs from CAMPER mice. The knockdown of PPP2CB was associated with a reduction in acute and sensitized adenylyl cyclase activity, implicating PP2A is an important and persistent regulator of adenylyl cyclase activity. In contrast, the effects of NAPA knockdown were more nuanced and appeared to involve an activity-dependent protein interaction network. Taken together, these data represent a novel screening method and workflow for the identification and validation of adenylyl cyclase protein-protein interaction networks under diverse cAMP signaling paradigms.
Keywords: adenylyl cyclase; AC5; BiFC; cAMP; dopamine; PP2A; striatum; NAPA adenylyl cyclase; AC5; BiFC; cAMP; dopamine; PP2A; striatum; NAPA

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MDPI and ACS Style

Doyle, T.B.; Muntean, B.S.; Ejendal, K.F.; Hayes, M.P.; Soto-Velasquez, M.; Martemyanov, K.A.; Dessauer, C.W.; Hu, C.-D.; Watts, V.J. Identification of Novel Adenylyl Cyclase 5 (AC5) Signaling Networks in D1 and D2 Medium Spiny Neurons using Bimolecular Fluorescence Complementation Screening. Cells 2019, 8, 1468. https://doi.org/10.3390/cells8111468

AMA Style

Doyle TB, Muntean BS, Ejendal KF, Hayes MP, Soto-Velasquez M, Martemyanov KA, Dessauer CW, Hu C-D, Watts VJ. Identification of Novel Adenylyl Cyclase 5 (AC5) Signaling Networks in D1 and D2 Medium Spiny Neurons using Bimolecular Fluorescence Complementation Screening. Cells. 2019; 8(11):1468. https://doi.org/10.3390/cells8111468

Chicago/Turabian Style

Doyle, Trevor B., Brian S. Muntean, Karin F. Ejendal, Michael P. Hayes, Monica Soto-Velasquez, Kirill A. Martemyanov, Carmen W. Dessauer, Chang-Deng Hu, and Val J. Watts. 2019. "Identification of Novel Adenylyl Cyclase 5 (AC5) Signaling Networks in D1 and D2 Medium Spiny Neurons using Bimolecular Fluorescence Complementation Screening" Cells 8, no. 11: 1468. https://doi.org/10.3390/cells8111468

APA Style

Doyle, T. B., Muntean, B. S., Ejendal, K. F., Hayes, M. P., Soto-Velasquez, M., Martemyanov, K. A., Dessauer, C. W., Hu, C.-D., & Watts, V. J. (2019). Identification of Novel Adenylyl Cyclase 5 (AC5) Signaling Networks in D1 and D2 Medium Spiny Neurons using Bimolecular Fluorescence Complementation Screening. Cells, 8(11), 1468. https://doi.org/10.3390/cells8111468

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