Decoding the disease-associated proteins encoded in the human chromosome 4

Area of Science:

• Genomics and Proteomics
• Human Genetics
• Biomedical Research

Background:

• Chromosome 4 harbors genes implicated in various diseases, including cancer, aging, and metabolic disorders.
• It plays a significant role in biomedical research, encompassing oncogenes and growth factors.
• The chromosome 4-centric human proteome project (Chr 4-HPP) aims to systematically analyze its genetic content.

Purpose of the Study:

• To conduct a systematic analysis of chromosome 4's protein-coding genes.
• To investigate disease associations, protein isoforms, and coding single nucleotide polymorphisms.
• To explore the potential of chromosome 4 genes in biomarker discovery and drug target identification for cancer research.

Main Methods:

• Systematic analysis of 757 protein-coding genes on chromosome 4.
• Integration with cancer cell secretomes and public databases.
• Literature annotation and topology analysis for protein identification.

Main Results:

• Identified 141 chromosome 4-encoded proteins as cancer cell-secretable/shedable.
• Identified 54 chromosome 4-encoded proteins as cancer-associated with developed SRM/MRM assays.
• Identified 271 membrane proteins; 27.9% of genes lack experimental protein-level evidence.

Conclusions:

• Chromosome 4 is a valuable resource for cancer-associated proteins.
• Findings support biomarker verification and drug target discovery projects.
• The Chr 4-HPP provides a foundation for future disease-oriented research.