Biosingularity

Researchers develop T-cells from human embryonic stem cells

Posted on: July 20, 2006

Researchers from the UCLA AIDS Institute and the Institute for Stem Cell Biology and Medicine have demonstrated for the first time that human embryonic stem cells can be genetically manipulated and coaxed to develop into mature T-cells, raising hopes for a gene therapy to combat AIDS.

The study, to be published the week of July 3 in the online edition of the Proceedings of the National Academy of Sciences, found that it is possible to convert human embryonic stem cells into blood-forming stem cells that in turn can differentiate into the helper T-cells that HIV specifically targets. T-cells are one of the body’s main defenses against disease.

The results mark the first time that scientists have been able to derive T-cells out of human embryonic stem cells, said Zoran Galic, assistant research biologist, and lead researcher on the study.

“This tells you that you may be able to use human embryonic stem cells to treat T cell and other blood diseases. This could be a very important weapon in the fight against AIDS,” Galic said.

In their study, the researchers cultured human embryonic stem cells, which were incubated on mouse bone marrow support cells, which in turn converted them into blood forming cells. Those cells were then injected into a human thymus gland that had been implanted in a mouse, and the thymus then changed those blood-forming cells into T-cells. Located just above the heart in humans, the thymus is the organ where T-cells develop. It gradually shrinks in adults, weakening the immune system over time.

These results indicate that it is possible to decipher the signals that control the development of embryonic stem cells into mature T-cells, said study co-author Jerome Zack, associate director of the UCLA AIDS Institute, and professor of medicine and of microbiology,
immunology and molecular genetics at the David Geffen School of Medicine at UCLA.

“That way we can eventually repopulate the immune system in patients needing T-cells,” Zack said.

This in turn could give rise to gene therapy approaches to treat other diseases involving T-cells. In addition to HIV, for instance, the technique could be used to treat severe combined immunodeficiency, or the “bubble boy disease,” which leaves its victims without a working immune system, forcing them to a life in an antiseptic, germ-free environment.

Source: University of California – Los Angeles
The study is available at http://www.pnas.org/papbyrecent.shtml.

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2 Responses to "Researchers develop T-cells from human embryonic stem cells"

Can you confirm the below E-mail?

My Dr. Trk is saying:
Regarding the E-mail below, the researches still going on for using of stem cells injection in diabetes.

So far no good evidence to support that.

Thanks

Dr T

——————————————————————————–

Subject: Re: qustion

We are using human embryonic stem cells and have worked on many cases of
diabetes with positive results. The cells are introduced into the body via
injections. As the cells start working in the body, the medication levels
are adjusted accordingly. Depending upon your condition, you need to be in for 2-8 weeks initially and injections are given on a daily basis.
Please send details of your blood sugar levels and the medication you are taking. Also your particulars-age, sex, height, weight etc.
Thank You

From:
Sent:
Subject: qustion

Do you have a cure medicine for sugar diabetic?
If so, please provide me with detailed requirements for your medicine.

Thanks,

Mo

I just wanted to tell you how much we appreciate anything you’ve discussed to help improve lives of individuals in this subject material. Through the articles, I’ve gone via just a newbie to a specialist in the area. It is truly a tribute to your good work. Thanks

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