Sean Morrison Laboratory, the Hamon Laboratory for Stem Cell and Cancer Biology

In the News

Oct. 9, 2014 — Researchers are just now beginning to appreciate the ways in which differences in protein synthesis among mammalian somatic cells are necessary for tissue development and homeostasis, as new approaches are making it possible to more generally compare protein synthesis and its regulation among different kinds of cells.

Dr. Sean Morrison, Director of the Children’s Medical Center Research Institute at UT Southwestern, is senior author of a review of research that focuses on differences in protein synthesis, protein stability, and ribosome assembly among cells that are critical for tissue development and homeostasis.

The mechanisms that underlie these differences are only beginning to be clarified, but they are already providing fundamental new insights into development, tissue regeneration, and how these processes go wrong in degenerative diseases and cancer.

Read the research review published in Cell.

Aug. 31, 2014 — With nearly 1,500 active clinical trials involving stem cells taking place in the United States, Dr. Sean Morrison, Director of the Children’s Medical Center Research Institute at UT Southwestern and President-Elect of the International Society for Stem Cell Research, says it’s important to appreciate the rigorous process involved in developing successful stem cell therapies.

Read more about the current state of stem cell discovery and treatment development as reported by Healthline.

June 20, 2014 — The Children’s Medical Center Research Institute at UT Southwestern (CRI) has identified a biomarker that enables researchers to accurately characterize the properties and function of mesenchymal stem cells (MSCs) as they exist in the body.

MSCs are the focus of nearly 200 active clinical trials registered with the U.S. National Institutes of Health, targeting conditions such as bone fractures, cartilage injury, degenerative disc disease and osteoarthritis. Read the news release.

May 13, 2014 — Scientists at the Children’s Medical Center Research Institute at UT Southwestern (CRI) have made a surprising discovery that significantly advances the current level of knowledge about stem cells in the brain.

For many years, researchers have assumed that neural stem cells (NSCs) could be identified based on their capacity to initiate clusters of cells in laboratory dishes, called neurospheres. However, scientists at CRI led by Sean Morrison, Ph.D., have identified markers showing that the neurosphere-initiating cells (NICs) are not stem cells at all. The NICs arise from NSCs but are very proliferative and short-lived. The research team identified a separate population of long-lived cells that are NSCs, which do not form neurospheres but give rise to larger numbers of brain cells in vivo.

“This new ability to purify brain stem cells directly from tissue will profoundly accelerate our understanding of brain stem cell function,” said Dr. Morrison, Director of CRI. “By providing a way to study NSCs and NICs in vivo and in more granular detail than before, this finding will alter the way we approach the development of neural stem cell therapies.”

Although many brain cells cannot be regenerated, NSCs persist throughout life in various regions of the brain, regenerating certain kinds of cells. Modulation of neural stem cell activity may influence learning, memory and other behaviors.

Read the research article published in eLife.

March 20, 2014 — Sean Morrison, Ph.D., Director of the Children’s Research Institute, discusses what stem cells do, how and why they change over a lifetime, and the ways those changes can be further examined in pursuit of potential treatments for certain diseases, as a guest on KERA’s radio program, Think. Listen to the interview.

March 9, 2014 — For the first time, researchers have shown that an essential biological process known as protein synthesis can be studied in adult stem cells, something scientists have long struggled to accomplish. The groundbreaking findings from the Children’s Medical Center Research Institute at UT Southwestern also demonstrate that the precise amount of protein produced by blood-forming stem cells is crucial to their function.

March 4, 2014 — Sean Morrison, Ph.D., Director of the Children’s Research Institute, recently delivered a President’s Lecture Series presentation, Understanding Cancer Through the Lens of Stem Cell Biology, on the campus of UT Southwestern. Afterward, he expanded on his remarks during a discussion on stem cells and aging. Read an excerpt of his comments.

Feb. 20, 2014 — Sean Morrison, Ph.D., Director of the Children’s Research Institute, discusses his internationally recognized research as part of the UT Southwestern President’s Lecture Series. By applying the principles of stem cell biology to understand cancer growth and progression, Dr. Morrison and the scientists in his laboratory have been able to gain important insights into the cells that are responsible for tumor growth, as well as the molecular mechanisms they use to drive growth and metastasis. Watch Dr. Morrison’s presentation.

Jan. 22, 2014 — Scientists have known for years that stem cells in male and female sexual organs are regulated differently by their respective hormones. In a surprising discovery, researchers at the Children’s Medical Center Research Institute at UT Southwestern and Baylor College of Medicine have found that stem cells in the blood-forming system — which is similar in both sexes — also are regulated differently by hormones, with estrogen proving to be an especially prolific promoter of stem cell self-renewal.

Jan. 15, 2014 — The potential for understanding how the biological setting that sustains blood-forming stem cells is involved in normal and disease physiology promises new approaches to treating blood disorders. Defining niche components and how they work together to regulate blood formation provides the opportunity to not only improve regeneration following injury or blood-forming stem cell transplantation, but also to understand how disordered niche function could contribute to disease.

Sean Morrison, Ph.D., Director of the Children’s Research Institute at UT Southwestern, has co-authored an evaluation of research on the blood-forming stem cell niche in bone marrow — the primary environment for the cells’ maintenance and self-renewal — bringing past discoveries into context and looking ahead to questions that still need to be addressed. Read the research review published in Nature.