-
The Discovery of a Malignant tumor
Dr. Howard Jones performs a series a tests on Henrietta and concluded that an operation or treatment using radium should be prescribed. But before the treatment two small pieces of Henrietta's cervix were cut off one from the healthy tissue and one from the one of the tumor. The tissue was then sent to Dr. Gey -
The Creation of HeLa cells
After receiving Henriettas cells from Dr. Howard at John Hopkins, George Gey began to study the cells which appeared to behave differently from other tumor cells. Eventually he was able to isolate, multiply and keep alive a specific type of cell which would be known as Hela cells. The first immortal human cells -
Period: to
HeLa Cells in The Medical World
-
Hela Chromosomes
HeLa cell chromosomes become visible with a stain called hemotoxylin. Using this stain made it easier for researchers to examine what happens to the cells during experiments.
HeLa cells through research with the stain helped with the discovery of genetic links to diseases like Down Syndrome. -
Finding a cure
American medical researcher and virologist, Jonas Salk begins using a strain of Hela cells to create a vaccine against polio which had been responsible for the deaths of thousand of people in the past years. In order to test Salk's new vaccines.factories began to mass produce the cells. -
Cloning the cells
Theodore Puck and Philip I Marcus at the University of Colorado, Denver successfully clone HeLa cells: the first ever human cells to be succesfully cloned. This was done by isolating a single cell and keeping it alive long enough for it to replicate and create a perfect copy of itself. -
HeLa cells in Space
The Russian Space programs sends their second satellite Korabl-Sputnik 2 into space carrying HeLa cells. The US almost immediately follows by shooting several vials into space in their Discoverer XVIII satellite. Their mission: to find out the effect of Space's zero gravity on human cells. -
Monkey Virus SV-40 contamination
In the early 1960's it was discovered that some lots of polio
vaccines manufactured on rhesus monkey kidney tissue during the period 1955 to 1963 were contaminated with a monkey virus called SV-40 (Simian virus 40). This primate virus was quickly proven to cause various cancers in experimental animals. However, to this day, government health officials still insist there is no absolute proof that SV40 causes cancer in humans. -
Tragic Discovery
Walter Nelson-Rees a cell culture expert discovers a widespread contamination of various animals cells with HeLa. human cell culture lines, used extensively in labs worldwide, were contaminated with HeLa. Millions of dollars worth of published cancer research experiments were ruined. -
Salk Speaks
Jonas Salk speaks bout experiments he performed in the late 1950s on dying cancer patients. Salk injected them with a cell line of monkey heart tissue- the same cell line he used to harvest polio virus for his famous vaccine. He hoped the monkey cell injections would stimulate the immune system to fight cancer. However, when abscesses developed at the site of injections Salk began to suspect that he might be injecting HeLa cells rather than monkey cells, and he stopped the experiment. -
Tubercolusis
Researchers infect HeLa cells with tubercolisis DNA to learn how the bacteria attacks human cells. -
Nanotech
The application of nanotechnology in medicine currently being developed involves employing nanoparticles to deliver drugs, heat, light, or other substances to specific types of cells. Developing a nanoparticles intended to make very early detection of cancer tumors easily. We wouldn't be able to test nanotechnology without HeLa cells because it allows us to test things on the human cells outside the body. -
The BBC Report
BBC reported cell contamination still is a problem in cancer research, and that dozens of cancer studies may be thrown into doubt by the discovery that researchers inadvertently used the wrong type of cancer cells. The cell lines, according to the Journal of the National Cancer Institute, were supplied as samples of esophageal cancer. However, tests show they contained other types of tumor, including lung and bowel. -
Hela cells and Compunds
HeLa cells are used in tests of novel heptamethine dyes IR-808 and other analogs leading to the development of theranostics which is the individualized treatment of cancerous patients with the aid of PDT, co-administrated with other drugs, and irradiation or exposure to light.
