Xiaolei Lin
Shanghai Eye Hospital
Lens Tissue Transcriptome Analysis in Patients with Total Congenital Cataract
My presentation is connected to the following theme
Science & Clinical Research
5 key short sentences highlighting the essence of my presentation
- The research analyzed the transcriptome profiles of lens epithelial cells (LECs) and lens fiber cells (LFCs) in pediatric patients to identify the molecular mechanisms underlying total congenital cataract (TCC)
- Researchers identified 1,645 differentially expressed genes (DEGs) in LECs and 2,708 DEGs in LFCs, showing distinct transcriptomic landscapes between the two cell types
- The findings revealed that LEC abnormalities are linked to extracellular matrix organization, while LFCs are primarily affected by defects in cotranslational protein targeting to the membrane and endoplasmic reticulum
- By cross-referencing with the iSyTE2.0 database, five specific genes—HOPX, SUSD2, SH3BGR, BIRC7, and GSS—were identified as top candidates for lens development and disease
- All five candidate genes were significantly downregulated in TCC patients, suggesting their critical roles in oxidative stress, apoptosis, and embryonic lens development.
Summary
Background: Total congenital cataract (TCC), a leading cause of childhood visual impairment. We analyzed transcriptome profiles of lens epithelial cells (LECs) and lens fiber cells (LFCs) in pediatric patients with TCC to identify differentially expressed genes (DEGs) and potential pathogenic pathways.
Results: In LECs, 1,645 DEGs were identified, enriched in structural constituents of the eye lens extracellular matrix component and extracellular matrix organization. LFCs exhibited 2,708 DEGs, enriched in SRP-dependent cotranslational protein targeting to membrane, protein targeting to ER, and cotranslational protein targeting to membrane. Cross-referencing with iSyTE2.0 highlighted HOPX, SUSD2, SH3BGR, BIRC7, and GSS as top candidates. All five candidate genes were significantly downregulated in both LECs and LFCs that were lens-enriched genes during embryonic development.
Conclusions: This study reveals distinct transcriptomic profiles in LECs and LFCs of TCC patients, implicating novel genes in lens development, oxidative stress, and apoptosis.
Results: In LECs, 1,645 DEGs were identified, enriched in structural constituents of the eye lens extracellular matrix component and extracellular matrix organization. LFCs exhibited 2,708 DEGs, enriched in SRP-dependent cotranslational protein targeting to membrane, protein targeting to ER, and cotranslational protein targeting to membrane. Cross-referencing with iSyTE2.0 highlighted HOPX, SUSD2, SH3BGR, BIRC7, and GSS as top candidates. All five candidate genes were significantly downregulated in both LECs and LFCs that were lens-enriched genes during embryonic development.
Conclusions: This study reveals distinct transcriptomic profiles in LECs and LFCs of TCC patients, implicating novel genes in lens development, oxidative stress, and apoptosis.