ArticleCell reports2022
Dopamine D2 receptors bidirectionally regulate striatal enkephalin expression: Implications for cocaine reward.
Article in Cell reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed, 18 citations in OpenAlex.
- C57 and DBA mouse strains express distinct cocaine avoidance phenotypes in an operant runway independent of differences in striatal dynorphin-enkephalin balance.Psychopharmacology · 2026Article
- The dual-enhanced graph learning framework DePass allows paired data integration in single-cell and spatial multiomics.Nature cell biology · 2026Article
- Contributions of the interaction between mu-opioid receptors and dopamine receptors in the regulation of risky decision making.Progress in neuro-psychopharmacology & biological psychiatry · 2026Article
- PDE4 inhibitor rolipram dynamically regulates the balance between D1-MSNs and D2-MSNs in the DMS to modulate abnormal "Go" behavior associated with alcohol addiction.Acta pharmacologica Sinica · 2026Article
- Activity-Dependent Regulation of Basal Forebrain Cholinergic Neurons by Striatal Spiny Projection Neurons.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2026Article
- From Neuroadaptation to Neuroprogression: Rethinking Chronic Cocaine Exposure Through a Model of Cocaine-Related Cerebropathy.Journal of clinical medicine · 2026Article
- PKD1-mediated phosphorylation at dopamine D2 receptor serine 365 site in dorsal striatum underlies cocaine-induced locomotor hyperactivity.IBRO neuroscience reports · 2025Article
- Opioid-Induced Hyperalgesia and Inflammaging in the Management of Spine Pain: The Case for Genetically Directed Dopamine Homeostasis.International journal of spine surgery · 2025Article
- Shifted Balance Between Ventral Striatal Prodynorphin and Proenkephalin Biases Development of Cocaine Place Avoidance.Addiction biology · 2025Article
- Mu opioid receptors expressed in striatal D2 medium spiny neurons have divergent contributions to cocaine and morphine reward.Neuroscience · 2025Article
- Single-nucleus RNA sequencing-based construction of a hippocampal neuron atlas in mice with epileptic cognitive impairment.iScience · 2024Article
- The Role of Rab GTPases in the development of genetic and malignant diseases.Molecular and cellular biochemistry · 2024Review
- Single nuclei transcriptomics in human and non-human primate striatum in opioid use disorder.Nature communications · 2024Article
- Endogenous opioid system modulates conditioned cocaine reward in a sex-dependent manner.Addiction biology · 2023Article
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Authors and funding
12 authors at 4 institutions in 1 country.
Funding
Abstract
Low dopamine D2 receptor (D2R) availability in the striatum can predispose for cocaine abuse; though how low striatal D2Rs facilitate cocaine reward is unclear. Overexpression of D2Rs in striatal neurons or activation of D2Rs by acute cocaine suppresses striatal Penk mRNA. Conversely, low D2Rs in D2-striatal neurons increases striatal Penk mRNA and enkephalin peptide tone, an endogenous mu-opioid agonist. In brain slices, met-enkephalin and inhibition of enkephalin catabolism suppresses intra-striatal GABA transmission. Pairing cocaine with intra-accumbens met-enkephalin during place conditioning facilitates acquisition of preference, while mu-opioid receptor antagonist blocks preference in wild-type mice. We propose that heightened striatal enkephalin potentiates cocaine reward by suppressing intra-striatal GABA to enhance striatal output. Surprisingly, a mu-opioid receptor antagonist does not block cocaine preference in mice with low striatal D2Rs, implicating other opioid receptors. The bidirectional regulation of enkephalin by D2R activity and cocaine offers insights into mechanisms underlying the vulnerability for cocaine abuse.
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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.