Navigation Links
Cancer Stem Cells Alone spread Cancer

Researchers from Toronto, Canada have found that only a small portion of a tumor is responsible for spreading cancer and not all the cells as believed earlier. //

This is the fourth type of cancer in which stem cells have been found to be the source of the disease. Previously it was discovered in leukaemia, breast and brain cancers. This finding supports the view - stem cells may be responsible for all cancers.

This study will definitely help to find more effective treatment options according to the author John Dick, who is a senior scientist at University Health Network and also a professor of molecular and medical genetics at the University of Toronto.

Treating cancer stem cells alone will be a better way of dealing with the disease, says Dick. He compares cancer with a backyard weed. "You can keep cutting the leaves off the weed, but the weed will regrow," he explains. 'But if you cut the tap roots, the leaves will wither away. Killing the cancer stem cells is the equivalent of killing the root of the weed.'

Dick identified cancer stem cells in a type of leukemia ten years ago. Since then other researchers have discovered stem cells responsible in breast tumours. Two years ago, Peter Dirks, assistant professor in the University of Toronto's department of surgery discovered stem cells in brain tumours.

"This is a really important additional discovery in a really important human cancer," says Dirks, also a scientist at the Hospital for Sick Children.

In this research , human colon cancer cells were implanted into mice which degenerated immune systems. The researchers found that a small number of cells, which had a protein called CD133 on their surface, were active in spreading and maintaining cancer.

Their findings were published in the journal Nature.In the same issue of Nature, a group of Italian researchers also have announced a similar discovery .

In the second stud y, Ruggero De Maria of the Istituto Superiore di Sanita in Rome and colleagues found the same CD133 cells started tumours when injected into immune-deficient mice.

These two studies are the first to show that cancer stem cells are responsible for colon tumours.

That two independent research groups identified colon cancer stem cells reveals the power of this hypothesis, Dirks says.

"The big challenge now is to learn how to target and kill these cells," he says, “As other studies have shown that cancer stem cells in brain tumors are resistant to radiation and leukemic stem cells seem to be resistant to chemotherapy.”

To understand the molecular program of colon cancer stem cells seems to be their next step and also to find out if the cells have properties that make them resistant to chemotherapy. They hope to be funded by the new Ontario Institute of Cancer Research.

"Colon cancer is one of the most common forms of human cancer, but we don't know a lot about the genetics of how it starts," says Dick."It's important to try and understand these (cancer stem) cells."

Colon cancer is the fourth most dangerous cancer , killing 655,000 people every year, according to World Health Organisation.
SR
'"/>




Related medicine news :

1. Fibroids unlikely to Turn Cancerous
2. Virus Level could Predict Cervical Cancer Risk
3. Cancer Doctors Okays Controversial Prostate Therapy
4. Potential New Cancer Gene Identified
5. Consensus on "Combination Therapy" for Breast Cancer
6. Cancers of Colon & Rectum linked to Cigarette Smoking
7. Life Saving Cancer Drugs – From Chicken! Possible Says Dolly’ Creatos
8. The Cancer Rumour mill working over time
9. Cancer drugs in development nearly doubled since 1995
10. Radioactive Seeds used in Prostate Cancer treatment can migrate with the body
11. Cancer patients turning to Internet for information
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/27/2016)... ... June 27, 2016 , ... TopConsumerReviews.com recently awarded their highest five-star rating ... Millions of individuals in the United States and Canada wear eyeglasses. Once considered to ... correct vision and make a fashion statement. Even celebrities use glasses as a way ...
(Date:6/26/2016)... California (PRWEB) , ... June 26, 2016 , ... Pixel ... Cut Pro X. , "Film editors can give their videos a whole new perspective ... Christina Austin - CEO of Pixel Film Studios. , ProSlice Levels contains over ...
(Date:6/26/2016)... ... June 26, 2016 , ... Many women are ... with endometriosis. These women need a treatment plan to not only alleviate symptoms ... can help for preservation of fertility and ultimately achieving a pregnancy. The specialists ...
(Date:6/25/2016)... ... , ... The temporary closing of Bruton Memorial Library on June 21 due to a possible ... often overlooked aspect of head lice: the parasite’s ability to live away from a human ... but a necessary one in the event that lice have simply gotten out of control. ...
(Date:6/25/2016)... ... , ... As a lifelong Southern Californian, Dr. Omkar Marathe earned his Bachelors ... Geffen School of Medicine at UCLA. He trained in Internal Medicine at Scripps Green ... hematology/oncology at the UCLA-Olive View-Cedars Sinai program where he had the opportunity to train ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... , June 23, 2016 Any dentist who ... challenges of the current process. Many of them do not ... the technical difficulties and high laboratory costs involved. And those ... offer it at such a high cost that the majority ... Dr. Parsa Zadeh , founder of Dental ...
(Date:6/23/2016)... , June 23, 2016 ... CAPR ), a biotechnology company focused on ... today announced that patient enrollment in its ongoing ... Duchenne) has exceeded 50% of its 24-patient target. ... in the third quarter of 2016, and to ...
(Date:6/23/2016)... 23, 2016  Astellas today announced the establishment of Astellas Farma Colombia (AFC), a new affiliate with operations headquartered ... Latin America . ... ... ... ...
Breaking Medicine Technology: