Evidence map›Paper›PMID 41770292›Full record

ArticleStem cell reviews and reports2026

Integrated Bulk and Single-Cell Transcriptomic Analysis Reveals Mitochondrial Transporter Gene Programs in Human Spermatogonial Stem Cells.

Zahra Hasani Mahforoozmahalleh, Hossein Azizi, Thomas Skutella

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Article in Stem cell reviews and reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

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3 authors.

Zahra Hasani MahforoozmahallehFaculty of Biotechnology, Amol University of Special Modern Technologies, Amol, Iran.
Hossein AziziFaculty of Biotechnology, Amol University of Special Modern Technologies, Amol, Iran. H.azizi@ausmt.ac.ir.
Thomas SkutellaInstitute for Anatomy and Cell Biology, Medical Faculty, University of Heidelberg, Im Neuenheimer Feld 307, 69120, Heidelberg, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Mitochondrial protein import and transporter systems play essential roles in maintaining metabolic competence and proteostasis in stem cells. However, the transcriptional architecture of mitochondrial translocase (TOM/TIM) complexes and transporter genes in human spermatogonial stem cells (SSCs) remains poorly defined. We performed an integrative analysis combining bulk microarray profiling of human SSC-enriched populations (n=3 biological replicates per group) with complementary single-cell RNA-sequencing (scRNA-seq) datasets. Differential expression (limma; |log₂FC| ≥ 2, adj. P < 0.05), co-expression network construction (WGCNA), protein-protein interaction mapping (STRING/cytoHubba), and miRNA-mRNA regulatory inference were used to identify key mitochondrial transporter nodes. Validation of hub-gene expression patterns was performed using an independent scRNA-seq dataset. Cell-type identity of SSC-enriched cultures was confirmed by immunocytochemistry for established SSC markers. Integrated multi-omics analyses revealed a coordinated enrichment of mitochondrial transporter genes in SSCs, including upregulation of TOMM and TIMM family members and selected ATPase and SLC transporters relative to fibroblasts. Hub genes (TOMM22, TIMM17A, ATP6V1A, SLC25A3) showed high network centrality and were consistently enriched in undifferentiated SSC clusters across multiple scRNA-seq datasets. miRNA-mRNA interaction modeling identified several SSC-expressed miRNAs (e.g., hsa-miR-4732-3p, hsa-miR-6503-3p) as potential post-transcriptional regulators of mitochondrial transporter networks. Human SSCs exhibit a distinctive mitochondrial transporter gene program characterized by enhanced expression of protein-import machinery and metabolic transport components. These findings provide a comprehensive molecular framework for understanding mitochondrial regulation in SSCs and establish new candidate targets for probing germline metabolism and stem-cell maintenance.

Indexed as

Adult Germline Stem CellsMitochondriaMitochondrial Membrane Transport ProteinsSingle-Cell AnalysisSpermatogoniaStem CellsTranscriptomeGene Expression ProfilingGene Regulatory NetworksHumansMaleMembrane Transport ProteinsMicroRNAsSingle-Cell Gene Expression AnalysisMembrane Transport ProteinsMicroRNAsMitochondrial Membrane Transport ProteinsATPaseMicroarrayMitochondrial transportersNetwork analysisscRNA-seqSpermatogonial stem cellsTIMMTOMM

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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.