Clinicians at Karolinska University Hospital in Sweden are reporting that they successfully performed the world’s first implantation of a synthetic trachea. The organ was created from a biocompatible scaffold that was seeded with the 36 year old patient’s own stem cells inside a Harvard Bioscience bioreactor.
The patient had been suffering from late stage tracheal cancer. Despite maximum treatment with radiation therapy, the tumor had reached approximately 6 cm in length and was extending to the main bronchus. It was progressing and almost completely blocked the trachea. Since no suitable donor windpipe was available, Read more »
*This blog post was originally published at Medgadget*
Four-year-old Devan Tatlow’s struggle with leukemia has caused quite a stir on the Internet, prompting celebs like Paris Hilton and Kim Kardashian to encourage people to donate their bone marrow. Dr. Jon LaPook talks with Devan’s family about their search for a match.
Imagine throwing a lifesaving treatment in the garbage. That’s exactly what happens in the United States over ten thousand times a day because we do not routinely offer to collect precious umbilical cord blood at the time of birth. Thousands of Americans — many of them children — needlessly die annually because they cannot find either a bone marrow or umbilical cord blood match to help treat conditions like lymphoma and leukemia. Yet umbilical blood is discarded as medical waste in the vast majority of the more than four million births occurring each year. Read more »
There are two huge cancer meetings every year — AACR and the annual meeting of the American Society for Clinical Oncology (ASCO). AACR is the meeting dedicated to basic and translational research. ASCO, as the word “clinical” in its name implies, is devoted mainly to clinical research.
Personally, being a translational researcher myself and a surgeon, I tend to prefer the AACR meeting over ASCO, not because ASCO isn’t valuable, but mainly because ASCO tends to be devoted mostly to medical oncology and chemotherapy, which are not what I do as a surgeon. Each meeting draws between 10,000 to 15,000 or even more clinicians and researchers dedicated to the eradication of cancer. Read more »
This past weekend’s international science communication conference, ScienceOnline2010, also saw the first, final hardback copies of Rebecca Skloot’s long-awaited book make it into the hands of the science and journalism consuming public. Moreover, an excerpt of The Immortal Life of Henrietta Lacks has just appeared in the new issue of Oprah Winfrey’s O Magazine. And already, those online science communicators who left the conference with Skloot’s book are registering their praise via this Twitter feed that was so active it was a trending topic at the science aggregator, SciencePond.
The story of the rural, Virginia woman who descended from slaves and developed cervical cancer in the early 1950s is notable most obviously for her tumors giving rise to HeLa, the first immortalized human cell line continuously maintained in culture. I have noted previously my enthusiasm for this story as both a long-time admirer of Skloot’s writing and the fact that HeLa played a central role in my PhD thesis work and first papers from my independent laboratory. Read more »
The individual in the photo is not displaying his newly acquired gold tooth bling, but rather something more precious: the first fully functioning 3D organ derived from stem cells, described in PNAS as “a successful fully functioning tooth replacement in an adult mouse achieved through the transplantation of bioengineered tooth germ into the alveolar bone in the lost tooth region.”
More from The Wall Street Journal:
Researchers used stem cells to grow a replacement tooth for an adult mouse, the first time scientists have developed a fully functioning three-dimensional organ replacement, according to a report in the Proceedings of the National Academy of Sciences. The researchers at the Tokyo University of Science created a set of cells that contained genetic instructions to build a tooth, and then implanted this “tooth germ” into the mouse’s empty tooth socket. The tooth grew out of the socket and through the gums, as a natural tooth would. Once the engineered tooth matured, after 11 weeks, it had a similar shape, hardness and response to pain or stress as a natural tooth, and worked equally well for chewing. The researchers suggested that using similar techniques in humans could restore function to patients with organ failure.
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