HeLa Cells
In reviewHeLa cells are an immortal human cell line grown from a sample of Henrietta Lacks’s cervical cancer tissue that, once established in 1951, gave scientists a reliable, fast‑growing human cell model and helped build whole fields of modern biology and medicine. Their ability to divide indefinitely in laboratory culture turned rare, fragile human samples into a global research resource, enabling breakthroughs from the polio vaccine to cancer, HIV/AIDS and COVID‑19 studies while exposing deep ethical failures in how Black patients’ bodies were taken and used without consent. ## Definition and Origin HeLa cells are **immortalized human cells**, meaning they are human cells that can keep dividing indefinitely under the right laboratory conditions rather than aging and dying after a limited number of divisions. They were first grown in 1951 at Johns Hopkins Hospital in Baltimore from a biopsy of an aggressive cervical cancer tumor in Henrietta Lacks, a 31‑year‑old Black woman whose cells were labeled “HeLa” using the first two letters of her first and last names. Researchers George Otto Gey and his team had been trying for years to grow human cells outside the body; almost every sample they tried would die after a short time, but Lacks’s tumor cells survived in culture, doubled every 20–24 hours, and showed no sign of senescence. Once the cell line was established, portions of it were frozen, regrown, and shipped around the world, so “HeLa” no longer refers to a single tissue sample but to a continuing population of descendant cells. ## How HeLa Cells Were Created from Henrietta Lacks’s Tissue HeLa cells began with a **cervical biopsy** taken during Lacks’s treatment in the segregated public ward at Johns Hopkins. Surgeons removed small pieces of both her healthy cervical tissue and her tumor and passed them to Gey’s laboratory, where they were placed into glass culture flasks containing a nutrient‑rich medium and kept at body‑like temperature and conditions. Most patients’ cells stopped dividing and died, but the cancerous cells from Lacks’s tumor attached to the glass, spread, and began dividing so fast that Gey later described them as “growing like crabgrass.” Because they could be sub‑cultured—split into new flasks over and over without losing their ability to divide—Gey and colleagues defined them as an **immortal cell line**, the first of its kind from human tissue. The name “HeLa” was initially used as a coded label to protect patient anonymity and was widely shared with researchers without revealing Lacks’s identity; only in the 1970s did reporters and later biographers connect the label publicly back to Henrietta Lacks. Biologically, HeLa cells carry the hallmark of their cancer origin: they have far more chromosomes than normal human cells and are driven by genetic changes linked to infection with high‑risk human papillomavirus (HPV), which helped break the normal limits on cell division. Their immortality is sustained by an overactive enzyme called **telomerase**, which continually rebuilds the protective ends of chromosomes (telomeres) that usually shorten with each division, allowing HeLa cells to evade cellular aging and death. ## Scientific Importance and Uses Once scientists had HeLa, they had—for the first time—a human cell line that could be easily grown, frozen, thawed, and shipped, making it a **workhorse of twentieth‑ and twenty‑first‑century biomedical research**. HeLa cells were critical to the mass production and testing of the polio vaccine in the 1950s, allowing researchers to grow poliovirus in human cells at large scale and measure how candidate vaccines performed before use in children. They became a standard model for cancer biology, helping scientists understand how tumors grow, how chromosomes behave in malignant cells, and how radiation and chemotherapy drugs damage or kill cancer cells. In virology and infectious disease research, HeLa cells have been used to study numerous viruses, including HIV and the AIDS‑causing mechanisms, influenza, Zika, and, more recently, to test aspects of SARS‑CoV‑2 biology during COVID‑19 vaccine and therapeutic development. Beyond disease, HeLa cells have been sent into space to study how zero gravity affects human cells, used to map genes and understand basic cell processes like DNA replication and signal pathways, and served as a platform for advances in cell culture techniques that later supported other human and animal cell lines. By some estimates, tens of millions of tons of HeLa cells have been grown and they have appeared in tens of thousands of scientific papers, making them one of the most used biological materials in research history. ## Ethics, Race and Control of Biological Material The history of HeLa cells also exposes how **Black patients’ bodies were used without consent** to fuel scientific progress while families were kept uninformed, uncompensated and often in medical precarity. Henrietta Lacks never gave informed consent for her tissue to be used in research or for her cells to be commercialized; at the time, hospitals commonly took tissues from patients without explicit permission, but that norm rested on racialized power and segregation that made poor Black patients especially vulnerable. As HeLa cells spread globally, they were sold by commercial suppliers and used in profitable research and product development even as Lacks’s family struggled financially and remained unaware of the cell line’s existence for decades. Only in the late twentieth and early twenty‑first centuries did public attention to HeLa cells lead institutions to reckon more directly with issues of consent, privacy, control over genetic information, and the structural racism embedded in research practices. The publication of the HeLa genome without family consultation and the later negotiations that resulted in an agreement giving Lacks’s descendants some say over genome access highlighted the question of who controls the data derived from cells taken long ago. HeLa’s story has become a case study for **bioethics**, especially around informed consent, benefit sharing, and the governance of cell lines and genetic data. It has helped push changes in research oversight, including stronger consent requirements for tissue donation, debates over returning benefits to source communities, and calls for explicit recognition of Lacks and other Black contributors in scientific narratives. Just as important, the prominence of HeLa cells has forced mainstream science to acknowledge that a foundational tool of modern medicine originated in the body of a Black woman whose agency was denied, and that repair requires not only memorialization but structural change in how future research is conducted. ## HeLa Cells as a Separate Entity from Henrietta Lacks In this archive, HeLa cells are held as a **scientific and material entity** distinct from the person whose tissue they came from, even as their meaning cannot be separated from her life and the conditions under which her cells were taken. Biologically, HeLa cells are a laboratory model: a specific lineage of human cervical cancer cells, now altered by decades of mutation and adaptation in culture, used to answer questions about disease and cell function. Ethically and historically, they are evidence of how Black bodies have been central to the building of American and global medicine, often without recognition or consent. Keeping a separate record for the cell line allows us to track its scientific evolution, uses and governance on their own terms, while the linked record for Henrietta Lacks follows her biography, family testimony and the broader story of how her life and community have engaged with—and challenged—the institutions that profited from her cells. The archive recognizes HeLa cells not as neutral tools but as a **Black‑origin technology of science**, one that helped seed whole industries and disciplines, and that now stands as a measure of whether research practices can move from extraction to partnership and justice. ## Standing The archive holds HeLa cells as one of the central instruments of modern biomedicine: a human cell line whose Black origin made possible countless discoveries in virology, oncology, genetics and pharmacology while the source family lived outside the circle of benefit and decision. They are a testament to the power of Black bodies and biology in building scientific knowledge, and to the necessity of rewriting research norms so that future cell lines and data are governed with consent, reciprocity and explicit credit. HeLa cells stand here not only as a technical breakthrough but as material proof that science’s greatness has long depended on people it refused to see as co‑authors. ## Related Henrietta Lacks Informed Consent Human Cell Line Medical Ethics
The family archive is admissible here. Photographs, letters, deeds, church programs, funeral bulletins, business records, recordings — the things that were kept when no institution was keeping them. A keeper reviews everything before it is admitted, and your name stays on it.