Microscope view cell culture

Microscope view of cell culture shows living cells in nutrient medium, essential for biomedical research.

About this subject

Cell culture is a fundamental technique in biology and medicine laboratories. Cells are isolated from tissues and maintained under controlled conditions, with appropriate temperature, pH, and nutrients. This method allows studying cell behavior, testing drugs, and producing vaccines. Cells observed under the microscope can be from immortalized lines, such as HeLa cells, or primary cells derived directly from an organism. Phase-contrast or fluorescence visualization reveals details like nucleus, cytoplasm, and organelles.

In Brazil, cell culture is widely used in universities and research institutes such as Fiocruz and Instituto Butantan. It is crucial for drug development and therapies, including monoclonal antibody production and cancer studies. The technique is also applied in assisted reproduction and tissue engineering. Contamination control is rigorous, using laminar flow hoods and sterile media.

The history of cell culture dates back to the early 20th century, when Ross Harrison cultured frog nerve cells. Since then, advances such as synthetic media and CO2 incubators have revolutionized the field. Currently, 3D cell culture and organoids bring experiments closer to in vivo conditions. Microscopic observation is recorded by digital cameras for image analysis, allowing quantification of proliferation, migration, and cell death.

Trivia: the most famous cell line, HeLa, was obtained without consent from Henrietta Lacks in 1951. This case sparked ethical debates about patient rights and use of biological samples. Today, cell culture follows strict biosafety and ethical standards.

Frequently Asked Questions

What is cell culture used for in the laboratory?

Cell culture is used to study biological processes, test drugs, produce vaccines and antibodies, and for cancer research and tissue engineering.

What care is needed to maintain a cell culture?

Sterile conditions, controlled temperature and pH, appropriate nutrient medium, and prevention of contamination are required. Laminar flow hoods and CO2 incubators are used.

What are HeLa cells and why are they famous?

HeLa cells are an immortalized line derived from Henrietta Lacks' cervical cancer in 1951. They are famous for being widely used in research, but also for ethical issues regarding consent.