Wednesday, December 13, 2006

Bonding with bacteria Ananda M Chakrabarty

From Business Standard
Gargi Gupta / New Delhi December 14, 2006



RESEARCH: Ananda M Chakrabarty is in India, scouting for a pharma company that will help him develop a bacteria-based cancer drug.

Few Indians have heard of Ananda M Chakrabarty, but in biotechnology circles the distinguished professor of immunology and microbiology at the University of Illinois at Chicago is something of a hero.

His invention — a transgenic bacteria which breaks down crude oil into simpler substances easily consumed by marine animals — is, by itself, significant.

But Chakrabarty will go down in history as the first man to get a patent for a living micro-organism. It was in 1979, when he was working for General Electric in the United States, that Chakrabarty developed the oil-eating bacteria.

He applied for a patent, proposing to use his invention in mopping up oil spills. The application was turned down by the Patent Office Board of Appeals, but the battle went up to the US Supreme Court, which favoured Chakrabarty, saying that “A live, human-made micro-organism is patentable subject matter”.

That was 25 years ago and Chakrabarty has since moved on. His present interest is in using bacterial proteins to combat killer diseases like malaria, HIV and cancer using what he calls bacteria’s “evolutionary knowledge”.

“Unlike modern pharmaceutical industry which is content with arresting cancer along one pathway, bacteria consider cancer cells as intruders and work to stop them in their tracks,” explains Chakrabarty with the lucidity of a teacher.

He has even developed a potential drug for melanoma and breast cancer that has shown 60-80 per cent results in mice. “I don’t know if it’ll work in dogs and cats, much less monkeys before the FDA will allow me to use it on humans.”

In India to deliver a series of lectures, Chakrabarty will also make time to meet captains of the Indian drug industry to tell them, “Let’s do some of that here”. His proposal — “You put in the resources to set up a lab to develop a new generation of drugs. Let’s do clinical trials and design products for the global market”.

Chakrabarty is optimistic that the corporate houses will be more forthcoming than the academics and researchers, whom he’d talked to last year for collaborative research to check whether his promising drug could be used against cervical cancer, one of the most common cancers in India.

He even had a tentative funding commitment from the department of biotechnology for a small business innovative research company, formed for the project. But nothing came of it.

“Indians want to just publish papers on how cancers grow, how they proceed... they want to be known in the United States and Japan. But no one talks about trying to develop a drug against cervical cancer... Merck comes up with a vaccine but nobody in India does it.”

What Chakrabarty would ideally like is for India to have something like the Bayh-Dole Act in the US, which allows universities and small businesses to hold intellectual property rights over inventions resulting from government-funded research.

“I want to introduce the concept of academic start-ups which has contributed so much to the economic might of the US,” he says.

Like Genentech, Kyron and Biogen, all started by university professors, Chakrabarty too is a beneficiary of Bayh-Dole. It is his company, CDG Therapeutics, in which the University of Illinois has some equity, that is conducting the research into this potentially revolutionary drug and which will tie up with any Indian pharma company which is willing to check it out. Now if only Indian researchers saw the point.

Courtesy Business Standard.

Sunday, December 10, 2006

Lamps 'used for cancer surgery'

Cancer sufferers in the developing world could soon have Western standards of surgery at a fraction of the cost, scientists in Israel have said.
A technique using an off-the-shelf lamp and fibre optics is being developed as an alternative to expensive laser surgery, New Scientist reports.

Researchers at Ben Gurion University in Beersheva say the method could be used for operating on malignant tumours.

A UK expert said the technique could have some uses in the developing world.

http://news.bbc.co.uk/1/hi/health/6162899.stm
Source: BBC News | Health | World Edition
© Copyright: (C) British Broadcasting Corporation, see http://news.bbc.co.uk/2/hi/help/rss/4498287.stm for terms and conditions of reuse

Abstract:
We report the first realization of interstitial surgery by ultrabright lamp light, on the kidneys and livers of live animals. A high-flux optic concentrates lamp emissions into an optical fiber for power delivery inside the body. The trials reveal surgical efficacy comparable to corresponding laser fiber optic treatments, as well as pronounced delayed tissue death.

Answers for few questions asked on yahoo answers

What is a Stem Cell Vaccine, its used to kill lung cancer?

Answer Stem Cell Vaccine is a type of vaccine where it is given as a prophylaxis. That is u vaccinate to prevent the disease. So it is incorrect to say that it kills lung cancer.
The experiment has been carried on mouse and it is long way away from being used in human beings.


Is there a treatment for Adenocarcinoma of G.E. junction (stoamch cancer). The cyst is of size 12/8/7 cm.?

Patient's age: M

Answer -

There is a treatment for adenocarcinoma of stomach.
First a list of investigations need to be done to determine the stage of the patient. Once it is staged , UR oncologist will be able to tell whether it immediately operable or not.
The treatment will include depending on the stage Surgery, Radiotherapy and Chemotherapy.
It will be advisable to get a PET-CT done or atleast a CT scan.
If it can be operated upon then, after the operation , depending on the histopathological report, post op radiotherapy and chemotherapy will be adviced.
Please consult an Oncologist.

Sunday, December 03, 2006

Cancer Link: Gene regulates progesterone effect on breast cells

Since its discovery in 1994, the BRCA1 gene has given up its secrets grudgingly. Early on, scientists recognized that it kept cancer at bay. Women carrying a mutation in the gene face an extremely high risk of breast and ovarian cancer. Researchers have struggled to understand how the protein encoded by a normal BRCA1 gene works.

A study in mice now suggests one possibility: The BRCA1 protein moderates the hormone progesterone's effect in breast cells. The protein appears to calm those cells when progesterone urges them to divide and grow.

To read more....http://www.sciencenews.org/articles/20061202/fob1.asp