Chimerism News and Research

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Researchers demonstrate improved culture of primate induced pluripotent stem cells

The following study transplanted iPSCs derived from two NHP species, chimpanzee and pigtailed macaque, into blastocysts from another NHP species – the rhesus macaque.

1 Sep 2022

Transplant patient finds out his DNA has been replaced by that of his donor

A bone marrow transplant recipient later found out that the DNA in his blood and semen had been replaced by that of his donor.

10 Dec 2019

Deadly inherited blood disorders cured with bone marrow transplant

Doubling the low amount of total body radiation delivered to patients undergoing bone marrow transplants with donor cells that are only "half-matched" increased the rate of engraftment from only about 50 percent to nearly 100 percent, according to a new study by Johns Hopkins researchers.

15 Mar 2019

Study provides insights on mechanisms involved in tolerance after kidney transplantation

A new study provides insights on the mechanisms that allow an individual's immune system to accept, rather than reject, a donor kidney. The findings, which appear in an upcoming issue of the Journal of the American Society of Nephrology, point to markers that could be monitored to assess and track the health of organs following transplantation.

1 Dec 2017

New treatment strategies increase lifespan of transplanted kidneys

New treatment strategies over the last few decades have meant that nowadays 95% of transplanted kidneys function well for at least one year and that the average lifespan of a transplanted organ is between 10 and 15 years.

29 May 2017

Human cells integrated into pig and cow embryos

Scientists have shown for the first time that undifferentiated human stem cells can be integrated into early embryos of both pigs and cattle. The construction of such interspecies embryos may represent an important development in the generation of organs for transplant.

27 Jan 2017

BloodCenter's Erythroid Chimerism test available to monitor transplanted SCD patients

BloodCenter of Wisconsin's Diagnostic Laboratories today announced the availability of an innovative Erythroid Chimerism test to monitor erythroid lineage chimerism in patients with sickle cell disease (SCD) following allogeneic bone marrow transplantation.

28 Aug 2014

Marmoset's unique rapid reproductive system sheds new light on evolution and primate biology

A team of scientists from around the world led by Baylor College of Medicine and Washington University in St. Louis has completed the genome sequence of the common marmoset - the first sequence of a New World Monkey - providing new information about the marmoset's unique rapid reproductive system, physiology and growth, shedding new light on primate biology and evolution.

21 Jul 2014

AJT describes novel approach to long-term tolerance in organ transplantation

REGiMMUNE Corporation announced that the American Journal of Transplantation (AJT) has published its paper that describes a novel approach to long-term tolerance in organ transplantation with continuous administration of immune suppressants.

4 Mar 2014

Immune tolerance to grafts of muscle, bone and skin could free recipients from lifelong immunosuppression

Massachusetts General Hospital investigators have made an important step towards greater availability of hand transplants, face transplants and other transplants involving multiple types of tissue.

9 Jan 2014

New combination therapy offers potential lifetime cure for advanced type 1 diabetes

City of Hope researchers developed a combination therapy to treat late-stage type 1 diabetes that appears to offer a potential lifetime cure for the disease without toxic side effects. The laboratory study is published in the May 9 edition of Science Translational Medicine.

11 May 2012

Some bone marrow cells could prevent rejection of transplanted kidney in recipients: Study

Researchers transplanted certain cells from the kidney donor’s bone marrow along with the new organ. Five of eight transplant recipients who tried the method so far were off immune-suppressing medication up to 2½ years later, the researchers reported Wednesday. The preliminary results were considered important enough to be published in the journal Science Translational Medicine even though the study still is under way, because the technique worked for patients who didn’t have well-matched or related donors.

8 Mar 2012

Promising results from Fate Therapeutics' ProHema Phase 1b trial on hematologic malignancies

Fate Therapeutics, Inc. announced today promising clinical results from a Phase 1b trial of ProHema (FT1050-enhanced umbilical cord blood) as part of double-umbilical cord blood (UCB) transplants in adult patients with hematologic malignancies who have undergone reduced-intensity conditioning therapy.

14 Dec 2011

BioWa signs two licensing agreements with GSK

BioWa, Inc. announced today that it has entered into two agreements with GlaxoSmithKline. BioWa and GSK have amended their existing 2007 arrangement in order to provide GSK with extended access to BioWa's POTELLIGENT Technology platform for the research, development and commercialization of their antibody therapeutics with enhanced antibody-dependent cellular cytotoxicity. The second license agreement provides GSK with access to BioWa's COMPLEGENT Technology for enhancing the complement-dependent cytotoxicity of select GSK therapeutic antibodies.

23 Jun 2010

Modified blood adult stem-cell transplant regimen reverses sickle cell disease

A modified blood adult stem-cell transplant regimen has effectively reversed sickle cell disease in 9 of 10 adults who had been severely affected by the disease, according to results of a National Institutes of Health study in the Dec. 10 issue of the New England Journal of Medicine.

13 Dec 2009

Mothers and offspring can share cells throughout life - with positive and negative effects

Cutting the umbilical cord doesn't necessarily sever the physical link between mother and child. Many cells pass back and forth between the mother and fetus during pregnancy and can be detected in the tissues and organs of both even decades later. This mixing of cells from two genetically distinct individuals is called microchimerism. The phenomenon is the focus of an increasing number of scientists who wonder what role these cells play in the body.

30 Apr 2008

Experimental procedure induces tolerance to mismatched kidney transplants

Four of five patients participating in a trial of an experimental protocol designed to induce immune tolerance to HLA-mismatched kidney transplants have been able to discontinue immunosuppressive drugs.

24 Jan 2008

New technique allows partial-match cell transplants for children with most resistant leukemia

Clinicians at St. Jude Children's Research Hospital have successfully demonstrated an improved technique for blood stem cell transplantations in children that shows promise for those most likely to fail standard treatment for leukemia.

16 Oct 2006

Scientists describe phenomenon in the human genome called transcription-induced chimerism

In the January issue of the journal Genome Research, two teams of scientists describe a widespread phenomenon in the human genome called transcription-induced chimerism (TIC), where two adjacent genes produce a single, fused RNA transcript.

6 Jan 2006

Certain cells from a mother can cause immunity illness in children

Certain cells from a mother persist in their children’s bodies and can provoke an immune response in which the child’s body attacks itself, according to Mayo Clinic research published in the current issue of the Journal of Immunology (http://www.jimmunol.org).

23 Apr 2004