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Host cell genomic DNA (None)
- Target
- None
- Molecular classification
- Other (not a receptor, enzyme, channel, transporter, nor transcription factor; refers to the complete DNA genome present in host cells)
01
Overview
Host cell genomic DNA refers to the complete collection of double-stranded deoxyribonucleic acid (DNA) found in the nucleus (and in organelles such as mitochondria) of eukaryotic cells or in the nucleoid of prokaryotic cells. It consists of millions to billions of base pairs arranged in chromosomes, encoding all the information necessary for growth, development, and cellular function. The term encompasses both coding sequences (genes) and vast regions of regulatory and repetitive DNA. Genomic DNA serves as the template for replication, transcription, and cellular inheritance but poses safety concerns if residual DNA fragments from host cells are present in biologic therapeutics due to oncogenic or infectious risks.
- Other names
- Genomic DNAgDNAchromosomal DNA
02
Mechanism of action
DNA crosslinking/alkylation (DNA damage to prevent cell division); DNA strand breakage (e.g., topoisomerase inhibitors); Inhibition of DNA replication (block enzymes interacting with DNA, e.g., DNA polymerase)
03
Biological functions
Storage and transmission of genetic informationRegulation of gene expressionCell division (genetic inheritance)Cellular homeostasis and structureOther (provides the template for replication, transcription, and translation)
04
Disease associations
Cancer (mutations and oncogenic risk if contaminated in biologics)Inherited diseases (mutations, deletions, duplications)Infection (targeted or altered during viral infection)Other (chromosomal instability, genetic disorders)
05
Safety considerations
Oncogenic risk from host cell residual DNA in biologic products: potential to introduce oncogenes or activate/inactivate host genes upon integrationTransmission of pathogenic sequences: risk of introducing viral or tumorigenic DNA via contaminated biologicsRegulatory concern over DNA residues in biopharmaceutical production
06
Interacting drugs
DNA alkylating agents (e.g., β-propanolactone—to reduce residual DNA in bioprocessing)
2 more in the full profile.
07
Biomarkers
None specific to host cell genomic DNA as a whole; many individual genes or mutations can be used as biomarkers but not the complete genomic DNA sequence.
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