The MIR3658 gene is part of the microRNA (miRNA) family, playing a significant role in the post-transcriptional regulation of gene expression. Below is the detailed information regarding the requests you've made about MIR3658:

1. **Associated Genes**:
   - MicroRNAs typically regulate various target genes, and while specific genes associated with MIR3658 may not be extensively documented, it is essential to look for genes that show potential targeting by MIR3658. 
   - In general, miRNAs have been associated with genes involved in processes such as cell proliferation, apoptosis, differentiation, and metabolism. Databases like TargetScan or miRTarBase can provide insights into potential target mRNAs for MIR3658.
   - Specific information about direct associations might not be available, but it is worthwhile to investigate networks or pathways involving MIR3658.

2. **Aging and Age-Related Diseases**:
   - MicroRNAs have been implicated in various age-related conditions and biological processes such as cellular senescence, inflammatory responses, and neurodegenerative diseases.
   - Studies suggest that miRNAs can modulate key pathways involved in aging, including the insulin signaling pathway, apoptosis, and stress responses. 
   - While concrete research directly linking MIR3658 to specific aging processes or diseases such as Alzheimer's disease, cardiovascular diseases, or cancer might need further investigation, the general role of miRNAs in these areas is well-established.

3. **Drug Interactions**:
   - Specific drug interactions with MIR3658 may not be extensively documented in available databases. However, it is known that several drugs, particularly those targeting pathways regulated by miRNAs, can potentially influence miRNA expression.
   - Chemotherapeutic agents, anti-inflammatory drugs, and other small molecules are of particular interest, as they may exert their effects through modulation of miRNA pathways.
   - Further experimental evidence would be required to identify any specific drugs or drug classes that directly interact with MIR3658.

4. **Pathways and Biological Processes**:
   - MIR3658, like other miRNAs, is involved in various biological processes. Typically, the pathways may include:
     - Regulation of cell proliferation and apoptosis.
     - Developmental processes, particularly in tissues where MIR3658 is expressed.
     - Involvement in immune response signaling and other regulatory networks.
   - This gene may also play a role in modulating pathways relevant to cancer biology, metabolic regulation, and neuronal differentiation, typical of many miRNAs.

For the most precise insights regarding target genes, aging associations, drug interactions, and pathways, consulting specific literature and databases focused on miRNA-target interactions would be advisable, as research is continuously evolving.