Rethinking nomenclature for interspecies cell fusions

Area of Science:

• Stem Cell Biology
• Cell Biology
• Genetics

Background:

• Somatic cell hybrids have been vital experimental models in biomedical research.
• Current nomenclature for fused cells, particularly involving pluripotent stem cells from different species, can be misleading.
• Terms like 'hybrid' and 'parental' imply reproductive relationships that do not exist.

Purpose of the Study:

• To address the need for precise and responsible communication in cell fusion studies.
• To propose a revised nomenclature for experimentally fused cell lines, especially those involving interspecies pluripotent stem cells.
• To offer a generalizable framework for describing these unique cellular models.

Main Methods:

• Analysis of current terminology used in cell fusion research.
• Review of ethical and scientific implications of using terms like 'hybrid' and 'parental'.
• Development of a new, precise, and versatile nomenclature framework.

Main Results:

• Identified that existing terms like 'hybrid' are inappropriate for experimentally fused cells, especially across species.
• Proposed the term 'composite cell line' as a clear and accessible descriptor for experimentally created fused cells.
• Recommended a technical nomenclature detailing species, ploidy, and cell type for scientific audiences.

Conclusions:

• The term 'composite cell line' accurately describes experimentally fused cells without implying reproductive origins.
• A revised nomenclature is crucial for responsible scientific communication, particularly with advancing stem cell technologies.
• The proposed framework enhances clarity and precision in describing complex experimental cell models.