IPS Stem Cells Are Looking More Promising for Regenerative Medicine

George Church is a professor of genetics at Harvard Medical School. He is becoming more and more deeply involved in the field of regenerative medicine, using induced pluripotent stem cells (IPS). Church was interviewed recently on how he sees the field of IPS regenerative medicine progressing.
A pioneer in developing DNA sequencing technologies, and in researching everything from epigenetics and microbiomics to synthetic biology, Church has co-founded or advises over 20 companies. He also has launched the Personalized Genome Project with a goal of sequencing the complete genomes of 100,000 volunteers.

When I asked Church what he was most excited about right now, he answered without hesitation: “I’m thinking a lot about using regeneration as the key to treatments and keeping people healthy.”

TR: You mean regeneration using stem cells?

Church: Yes, induced pluripotent stem (IPS) cells (see, “Growing Heart Cells Just for You”). This is where I’m putting almost all of my chips these days, because it combines many of my interests–genomics, sequencing, epigenetics, synthetic biology, stem cells. I don’t think people have fully appreciated how quickly adult stem cells and sequencing and synthetic biology have progressed. They have progressed by orders of magnitude since we got IPS. Before that, they basically weren’t working.

Is this because IPS cells are relatively easy to create and to engineer?

You can use them to reprogram genomes–not sequence them, but to reprogram them genetically and epigenetically. In other words you make the minimum changes it takes to get them where you want them to be genetically and epigenetically and then you program the cells into tissues.

What do you mean?

Let’s use stem cells in bone marrow as an example. They are easy to use and to get to work when you implant them in bone marrow. You might one day have three choices. You can have bone marrow from someone else that is matched to you, or that is from you, or bone marrow that is matched to you and comes to you, but is better than you. This better bone marrow might be [engineered to be] resistant to one virus, or to all viruses. It could have a bunch of alleles that you picked out of super centenarians, alleles that you have reason to believe are at least harmless and possibly helpful. So now you have choice, a patient who can take a good bone marrow that he might reject and you’ll be on immunosuppressants your whole life. Or you might use your own, or your own that might fix the cancer, or your own enhanced bone marrow. And you will be able to do that for almost every stem cell population. Some of them are a little bit harder to replace, though.

Does IPS really work to accomplish this regeneration?

We have good evidence that you can create an entire mouse from IPS cells.

Has this been done?

This has been done. They have used IPS cells to grow a mouse, and they made IPS cells from that mouse. They’re totipotent [able to make an entire organism], not merely pluripotent. We haven’t done this for humans for obvious ethical reasons, but we will do it. As far as I know the mice have done fine.

But haven’t there been some problems with mutations occurring with IPS-generated tissue?

We have a recent paper in Nature that shows that when you make human induced pluripotent stem cells you actually do get mutations in coding regions at a slightly elevated level. But I think this is temporary. We’re going to use this information as an assay to make the process work better, to correct problems. You will be able to use this to improve the quality of gene therapy because that’s been the problem with gene therapy the last ten years.

How far are we from testing that in humans?

Almost everything I’ve described has been done in rodents, so we’re talking about years, not decades. It’s shorter than the Human Genome Project [which took 13 years], not less expensive, but definitely shorter. _TechnologyReview

Scientists at the University of Toronto have recently made a breakthrough in the control of IPS cells’ pluripotency:

Scientists have found a control switch that regulates stem cell “pluripotency,” the capacity of stem cells to develop into any type of cell in the human body. The discovery reveals that pluripotency is regulated by a single event in a process called alternative splicing.

Alternative splicing allows one gene to generate many different genetic messages and protein products. The researchers found that in genetic messages of a gene called FOXP1, the switch was active in embryonic stem cells but silent in “adult” cells—those that had become the specialized cells that comprise organs and perform functions.

“It opens the field to the fact that alternative splicing plays a really important role in stem cell pluripotency,” said Prof. Benjamin Blencowe, principal investigator on the study and a Professor in the University of Toronto’s Departments of Molecular Genetics and Banting and Best Department of Medical Research. “We’re beginning to see an entirely new landscape of regulation, which will be crucial to our understanding of how to produce more effective pluripotent stem cells for therapeutic and research applications.”

The findings were published in the current online edition of the scientific journal Cell. _Source

These are some fascinating developments, which will eventually lead to advanced therapies for diseases which are currently untreatable, such as cancers and end stage degenerative diseases of the heart, lungs, liver, kidneys, and brain.

The ability to grow replacement organs from stem cells is already being proven in animals. The ability to regenerate a badly degenerated organ in situ, using stem cells, is also being proven. According to George Church, stem cells are also the best method for making genetic improvements to organs and organisms.

BioHeart’s clinical stem cell trials in Mexico

ThermoGenesis an early commercial entrant into the human stem cell regenerative medicine industry

Al Fin Longevity

Loss and Bereavement Treatment of Common Life Stage Problems of Older Adults

loss and bereavement
Multiple losses are common as people age, including deaths of spouse, family, and friends. A less obvious form of loss involves the change in relationship quality with a spouse or friend who may be experiencing physical or cognitive impairment. These losses, as well as the awareness of one’s own mortality, often trigger a review and evaluation of unrealized dreams, lost opportunities, and unresolved relationships. This review may activate negative thoughts and maladaptive schema that impede the recovery process. In addition, the loss of meaningful relationships may isolate the older adult and reduce the opportunities for support and social interactions with others.

Cognitive-behavioral therapy interventions that seek to address these concerns can be helpful in reversing the negative spiral and engaging the individual in a more positive and adaptive response. For example, cognitive interventions that identify negative thoughts and challenge their accuracy will facilitate a more positive grief reaction and process. If the person believes that ‘I can’t survive alone,’ ‘My life is a total failure,’ or ‘I’ll never be happy again,’ then the person will find it difficult to interpret experience accurately. Cognitive techniques, such as ‘examining the evidence’ and ‘generating alternative thoughts,’ will facilitate a more positive recovery from loss and bereavement. In combination with behavioral techniques, such as increasing pleasant events and interactions with others, Cognitive-behavioral therapy helps move the person into a more problem-solving and adaptive response.

Cognitive-behavioral therapy (CBT) is an approach to treatment of psychological problems that emphasizes the relationship among cognitive processes (thoughts or beliefs), emotions, and behavior. The assumption is that what one believes about an event or experience impacts how one feels and behaves in that situation. Similarly, the activities or behaviors that one engages in will affect mood and thoughts. Thus, a depressed person is often trapped in a downward spiral of negative thoughts that lead to depressed feelings and disengagement from meaningful and pleasant activities. The approach to treatment assumes that changes in thoughts and behaviors will result in changes in mood. The process of treatment is active and directive, with the therapist and patient working collaboratively to identify and change negative or dysfunctional thoughts and increase participation in meaningful activities. The goal of CBT is to teach the skills needed to change the dysfunctional thinking and behaviors that contribute to negative mood. Thus, Cognitive behavioral interventions therapy emphasizes the teaching of coping skills for dealing with problems rather than ‘curing’ the problem. The expected consequence of teaching these skills is an increase in patients’ sense of self efficacy, competency, and coping abilities. These skills equip them to deal not only with present problems, but also with future problems. The leading figures in the development of general cognitive therapy approaches to treatment of mood disorders are Albert Ellis, Donald Meichenbaum, and Aaron Beck.

Aspects of Aging Development: Health & Physical Perspectives

Aging Development
Aging begins before we are born, is a lifelong process and continues throughout life. Throughout the life course, differing life experiences influence our capabilities and well-being in our later years. The functional capacity of our biological systems increases during the first years of life, reaches its peak in early adult-hood and naturally declines thereafter. Throughout most countries (but not all), persons experience a long childhood and a long old age. These two lengthy developmental spans have provided great utility. Throughout history, it has enabled older persons to educate the younger and pass on values to them. (more…)

Physical Changes in Aging

Young people rarely worry about their physics capacities. As a matter of fact they take tremendous pride in their physical well being and usually behave as though it were something that will go on forever.

However, by the time people reach middle age certain changes become apparent to challenge this certainty that youthful vigor will last for all time. (more…)

Chronic Disease and the Quality of Life in Older Adults

quality of life older adults
There are differences on what exactly contribute to quality of life on a personal level from person to person. Although many older people in good health condition have the increase of physical problems that affect them and their businesses. Although these disorders are more common with age, including Alzheimer, dementia, arthritis, hypertension, heart disease, stroke, depression, kidneys problem; lung disease, cancer and men’s prostate disease. (more…)

Benefits of Exercise for Older People – Chronic Disease Research Base Facts

benefits exercise older people
Some researches on relation between exercise and body human health results indicate that in addition to increasing muscle capacity, physical activity can help improve strength, balance, joint mobility, flexibility, agility, the speed with which one walks and physical coordination as a whole. In addition, physical activity has effects favorably on metabolism, blood pressure regulation, and prevention of an excessive increase in weight. (more…)

Adult Lifelong Learning Education Over Human Life Span

lifelong learning
In past decades, the traditional understanding of education, which was exclusively oriented toward formal learning in childhood and young adulthood, has been broadened to the concept of lifelong learning. Different versions of this concept have in common the idea that learning in different phases of human life span, (more…)

Aging Creativity and Productivity – Several Factors that Influenced in the Later Years

elderly creativity productivity
Creativity is most often defined as the individual capacity to generate ideas that are both original and useful. In everyday life there are numerous solutions to problems that work just fine but are totally routine, such as a motorist’s decision to take an alternate route to the grocery store when an automobile accident blocks the habitual route. Of course, the two defining components of creativity—originality and utility—are not discrete characteristics—there are varying degrees of these elements in a creative idea. (more…)

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