### Gene Overview: MUPP (Multiple PDZ Domain Protein)

**Gene Symbol:** MUPP  
**Function:** MUPP is known for encoding a protein that contains multiple PDZ domains, which are known to facilitate protein-protein interactions. PDZ domains play a critical role in building and maintaining cell signaling complexes, which are pivotal in various biological processes.

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### 1. Associated Genes
MUPP may interact with several genes involved in cell signaling, synaptic function, and cytoskeletal organization. While specific genes aren't commonly highlighted in basic summaries, research often indicates interaction with:

- **Gria (Glutamate Receptors):** Involvement in neuronal signaling.
- **PSD-95 (DLG4):** A key scaffolding protein in synapses that could interact with MUPP.
- **AIP (Arrestin-Related Protein):** May be linked due to similar interactions in cellular signaling pathways.

Note: For specific associations, gene interaction datasets (such as STRING databases) could provide deeper insights.

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### 2. Aging or Age-Related Diseases
While there may not be extensive research directly linking MUPP to aging or specific age-related diseases, the functions that MUPP participates in—particularly in the maintenance of synaptic signaling—could suggest relevance. Impairments in synaptic integrity and signaling have been linked to several neurodegenerative conditions, such as:

- **Alzheimer's Disease:** MUPP's role in synaptic scaffolding may influence neuronal survival and function in the aging brain.
- **Parkinson's Disease:** Disrupted signaling pathways that MUPP may be involved in could contribute to neuronal degeneration.

Neuroplasticity, which often declines with age, is another area wherein MUPP might play a role through its interactions in neural networks.

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### 3. Drugs or Drug Classes Interacting with MUPP
Currently, there aren't specific drugs or drug classes widely recognized to have direct interactions with the MUPP gene. However, because of its role in neuronal signaling, general pharmacological agents that target glutamate receptors or modulate synaptic activity could likely influence pathways involving MUPP. Examples might include:

- **NMDA Antagonists (e.g., Memantine):** Used for Alzheimer's disease.
- **Selective serotonin reuptake inhibitors (SSRIs):** May indirectly affect synaptic signaling where MUPP is involved.

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### 4. Pathways and Biological Processes
MUPP is associated with several crucial cellular pathways, including:

- **Synaptic Transmission:** MUPP's PDZ domains are integral to synaptic assembly and function.
- **Neurotransmitter Signaling:** Particularly in glutamatergic signaling.
- **Cell Signaling Pathways:** Interaction with G-protein coupled receptors (GPCRs) and involvement in signaling cascades critical for neuronal function.
- **Developmental Processes:** May be crucial in neural development and plasticity.

**Biological Processes Involved:**
- Signal transduction
- Cellular component organization
- Neuron projection development

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For precise insights and updates, researchers might find it beneficial to consult relevant literature and databases (such as PubMed, KEGG, or Reactome) that provide detailed and current information on gene functions, interactions, and implications in various physiological and pathological conditions.