“Latest Stem Cells News”

Breast milk, long revered for the nutritional advantages it gives a newborn, could be just as vital in terms of infant development, a leading scientist will claim this week. Up to three different types of stem cells have been discovered in breast milk, according to revolutionary new research.

Dr Mark Cregan, medical director at the Swiss healthcare and baby equipment company Medela, believes the existence of stem cells means breast milk could help a child “fulfil its genetic destiny”, with a mother’s mammary glands taking over from her placenta to guide infant development once her child is born.

“Breast milk is the only adult tissue where more than one type of stem cell has been discovered. That is very unique and implies a lot about the impressive bioactivity of breast milk and the consequential benefits to the breastfed infant,” said Dr Cregan, who is speaking at Unicef’s Baby Friendly Initiative conference this week. His research has isolated adult stem cells of epithelial (mammary) and immune origin, with “very preliminary evidence” that breast milk also contains stem cells that promotes the growth of muscle and bone tissue.

Scientists will use his discovery, made at the University of Western Australia, in Perth, Australia, to attempt to harvest stem cells from breast milk for research on a range of issues – from why some mothers struggle to produce milk to testing out new drugs that could aid milk production. “There is a plentiful resource of tissue-specific stem cells in breast milk, which are readily available and from a non-invasive and completely ethical source,” Dr Cregan said.

Advocates hope the discovery will help to lift the UK’s breastfeeding rates: only one-third of babies are exclusively breastfed at one week, the number dropping to one-fifth at six weeks. At five months, only 3 per cent of mothers still exclusively nurse their babies – although the World Health Organisation recommends that babies should consume only breast milk until they are at least six months old.

Rosie Dodd, campaigns director at the National Childbirth Trust, said: “This finding highlights the many factors that are in breast milk that we know so little about and that all have different advantages, such as helping a baby’s immune system to develop.”

Dr Cregan said the discovery of immune stem cells was the “most exciting development”, adding, “It’s quite possible that immune cells in breast milk can survive digestion and end up in the infant’s circulation. This has been shown to be occurring in animals, and so it would be unsurprising if this was also occurring in human infants.”

British scientists gave a cautious welcome to Dr Cregan’s discovery, warning that just because stem cells exist in breast milk did not mean that they could be used to develop a therapy – the ultimate goal of stem cell research. Chris Mason, professor of regenerative medicine at University College London, said: “It may give us some insight into specific breast diseases and is potentially valuable when it comes to drug discovery and drug development but it is fanciful to think it could provide routine therapies.”

from http://www.independent.co.uk/news/science/stem-cel…hy-breast-is-best-1825558.html

Dean Third used to look forward to weekends spent refereeing local football matches, and outings with his young family. But now even walking to the end of the road can leave him breathless and exhausted.

For the past four years, the father of four has suffered from dilated cardiomyopathy (DCM), a disease of the heart muscle which causes it to enlarge, affecting its ability to pump blood to the arteries.
The condition afflicts 12,000 people in the UK, and for most sufferers the cause is unknown. If uncontrolled it can be fatal, and patients must adhere strictly to a regime of medication.

For Dean, a mature student from Brightlingsea, Essex, the only chance of a normal life is a heart transplant. But he says: ‘I am way down the list because there are so few. I may die before one becomes available.’
Dean, 39, also has to live with the knowledge that he may have given the disease to his children. Although his wife, Cathy, 40, does not have it, there is a 50 per cent chance he could have given it to Nadine, 16, William, 14, Ross, 12, and Charlotte Rose, nine.

They will have to be monitored for the rest of their lives.
However, Dean has just taken part in a BBC Horizon TV programme where he discovered that medics are on the brink of a major breakthrough, meaning conditions such as his could be cured by making new hearts from the patient’s own stem cells.

Often referred to as the body’s ‘building blocks’, stem cells have the remarkable potential to develop into many different cell types in the body during early life and growth. In addition, in many tissues they serve as a sort of internal repair system, dividing without limit to replenish other cells as they die out.

When a stem cell divides, each new cell has the ability either to remain a stem cell or become another type of cell with a more specialised function, such as a brain cell, a red blood cell or, as Dean learnt, healthy heart cells.
The documentary team examined the cases of three patients with chronic conditions to discover whether, within their lifetimes, they might be cured.

Dean visited Dr Anthony Mathur, from University College London, to witness the world’s first trial using stem cells taken from bone marrow. The cells are injected into the muscles of the heart to regenerate damaged tissue.
He also travelled to Minnesota in America to visit laboratories carrying out research to produce new hearts using stem cells (…)

But the prospect of creating new functioning hearts from a patient’s own tissue is now a real possibility. While researchers have yet to get results in human subjects, scientists at the University of Minnesota have produced new working hearts using rats’ and pigs’ stem cells.

Dr Doris Taylor, of the Centre for Cardiovascular Repair, has taken a heart from a dead rat and drained it of all its stem cells so that it is nothing more than a lump of protein, a process called whole-organ decellularisation.
She then took stem cells from a live rat and injected them into the inert heart. The stem cells are able to recognise it is a heart and begin working to form new cells, producing a new organ (…)

Read more: http://www.dailymail.co.uk/health/article-1222671/Well-soon-building-new-hearts-order-just-24-hours-say-stem-cell-scientists.html

After much hope and controversy, for the first time stem cells have proven to have the ability to cure a disease. The news comes from a study on age-related macular degeneration (AMD) of the retina, the most common cause of blindness in individuals over the age of 50. The Sunday Times reports that the treatment was developed by a group of British researchers, who say that in the next six to seven years the treatment will become a routine operation, which will not last more than an hour. The treatment involves the replacement of a layer of degenerated cells with new cells created using embryonic stem cells, primitive cells that are able to transform into any type of human tissue.

AMD strikes the central area of the retina, the macula, which progressively deteriorates. Cloned retina cells are placed on an artificial membrane inserted into the posterior retina. The research was conducted by the department of ophthalmology of the University College of London and Morfields Hospital. Ethical controversy is inevitable because in order to create this type of stem cells embryos are used, which is explicitly allowed by British legislation. American pharmaceutical group Pfizer, said the Times, is supporting the study.

Embryonic stem cells (ESC) can survive even when inserted into chains of polymers, in a process in which they are “weaved” into artificial and flexible tissues able to adapt to various types of transplants. In an innovative technique, stem cells could be used in the future to produce artificial organs, say researchers at University College London.

The technique was described in a study, published in Integrative Biology. It implements other research to shape living cells into engineered tissues, including a technique which would print a live tissue using an ink printer, which would substitute normal ink with a biological ink made up of cells.

This technique has already underwent various changes to minimize damage to biological tissue. With this technology it has been possible to ‘weave’ a network of threads containing live brain cells. In this new research, Suwan Jayasinghe and her colleagues have demonstrated that this is possible with a similar technique, to create embryonic stem cell ‘threads’.