The MIR658 gene is part of the microRNA (miRNA) gene family and plays a significant role in the post-transcriptional regulation of gene expression. Below is a detailed description addressing your requests regarding the MIR658 gene.

### 1. Associated Genes
MicroRNAs typically regulate multiple target genes by binding to their mRNAs. While specific details regarding all the target genes for MIR658 are not universally cataloged in databases, some studies may have implicated MIR658 in the regulation of various cancer-related genes or developmental genes. Common tools to explore such associations include target prediction databases like TargetScan, miRBase, or experimental results from specific studies that may highlight interactions of MIR658 with genes involved in processes such as proliferation, apoptosis, or hormone signaling.

### 2. Aging and Age-Related Diseases
While the exact relationship of MIR658 with aging or age-related diseases may not be comprehensively documented, many miRNAs, including ones like MIR658, are known to play roles in cellular processes impacted by aging, such as cellular senescence and oxidative stress response. Dysregulation of miRNAs has been implicated in various age-related diseases, including neurodegenerative disorders, cardiovascular diseases, and cancers. Specific studies might highlight the role of MIR658 in conditions such as Alzheimer's disease, diabetes, or cardiovascular impairments, but these connections would need to be drawn from contemporary research articles.

### 3. Drug Interactions
As of my last training data, specific drugs or drug classes that directly interact with MIR658 are not commonly referenced. However, in general, miRNAs can potentially be modulated by therapeutic approaches, including:
- **miRNA mimics:** Synthetic molecules designed to enhance miRNA function.
- **Antagomirs or inhibitors:** Molecules that can inhibit the action of specific miRNAs, thereby preventing their interaction with target mRNAs.
- Certain small molecule drugs may indirectly affect miRNA expression profiles, which could include MIR658.
For a more accurate and current understanding, a search in medicinal chemistry databases or journals could yield specific drug-miRNA relationships.

### 4. Pathways and Biological Processes
MIR658 is involved in multiple biological pathways and processes, including but not limited to:
- **Gene Regulation:** Modulates gene expression at the post-transcriptional level.
- **Developmental Processes:** Influence on developmental timing, proliferation, and differentiation of various cell types.
- **Cell Cycle Regulation:** May have roles in the regulation of cell cycle checkpoints and tumor suppression.
- **Response to Stress:** Participation in the cellular response to stress, which is highly relevant in the context of aging and various diseases.

In-depth exploration in pathways analysis databases such as KEGG, Reactome, or GO (Gene Ontology) would further elucidate the specific pathways MIR658 is involved in, especially in relation to signals associated with cellular differentiation, proliferation, and apoptotic processes.

In conclusion, while the MIR658 gene is known for its regulatory roles as a microRNA, further specificity regarding its regulatory targets, associations with aging-related pathologies, drug interactions, and detailed biological processes will rely on additional experimental data and research literature tailored to this gene.