How a Soviet space craft proved an inspiration for CIRM’s latest Board member

blumenthal

George Blumenthal’s life changed on October 4, 1957. That’s the day the Soviet Union launched Sputnik, the world’s first artificial earth satellite. The beach ball-sized satellite marked the start of the space race between the US and the USSR. It also marked the start of Blumenthal’s fascination with science and space.

Fast forward almost 60 years and Dr. Blumenthal, now a world-renowned professor of astronomy and astrophysics and the Chancellor of U.C. Santa Cruz, has been named as the newest member of the CIRM governing Board.

California Lt. Governor Gavin Newsom made the appointment calling Dr. Blumenthal a world-class scientist and forward-looking administrator:

“As a Regent of the University of California, I have been impressed by his deep commitment to expanding educational opportunity for all California students and enhancing research opportunities. I am confident the Chancellor’s vision and leadership will be of immense benefit to the CIRM Board.”

In a news release Dr. Blumenthal said he is looking forward to being part of CIRM:

“The California Institute for Regenerative Medicine is doing outstanding work, and I am delighted to join the Board. CIRM support has advanced stem cell research at UC Santa Cruz and across the state. Public support for this work remains strong, and I look forward to playing a role in securing the future of the institute.”

sputnik

Sputnik

But getting back to Sputnik for a moment. In an article in Valley Vision, the newsletter for Joint Venture Silicon Valley, Dr. Blumenthal said the launch of Sputnik helped fuel his interest in science in general and space in particular.

“Sputnik had a profound effect on American science and it certainly played a part in my interest in space and physics all through high school, college and graduate school,” says Blumenthal. “I intended to become a particle physicist, but after a year in grad school I became more interested in space and astronomy, so I changed from studying the smallest things in the universe to the biggest, like galaxies.”

Dr. Blumenthal became the first in his family to graduate from college. He then went on to enjoy a successful career as a professor of astronomy and astrophysics. His research helped deepen our understanding of galaxies and the cosmos, including the role that dark matter plays in the formation of the structure of the universe. He became the chair of the California Association for Research in Astronomy (CARA), which manages the W. M. Keck Observatory near the summit of Mauna Kea in Hawaii. He also co-authored two of the leading astronomy textbooks, 21st Century Astronomy and Understanding our Universe.

Blumenthal joined the faculty of UC Santa Cruz in 1972 and was named chancellor in 2007. Throughout his career he has been a champion of diversity both at UCSC, where he created the Chancellor’s Advisory Council on Diversity, and throughout the U.C. system, where he served as a member of the Regents’ Study Group on Diversity.

Jonathan Thomas, Chair of the CIRM Board, welcomed Dr. Blumenthal, saying:

“We are honored to have someone with Dr. Blumenthal’s experience and expertise join the Board. As Chancellor at UCSC he has demonstrated a clear commitment to advancing world-class research and earned a reputation as a bold and visionary leader. We look forward to seeing those qualities in action to help advance CIRM’s mission.”

At CIRM we are shooting for the stars, aiming as high as we can to help accelerate stem cell treatements to patients with unmet medical needs. It will be nice having Dr. Blumenthal on Board to help guide us.

Stem cells and prostate cancer are more similar than we thought

Prostate cancer is a scary word for men, no matter how macho or healthy they are. These days however, prostate cancer is no longer a death sentence for them. In fact, many men survive this disease if diagnosed early. However, for those unlucky ones who have more advanced stages of prostate cancer (where the tumor has metastasized and spread to other organs), the typical treatments used to fight the tumors don’t work effectively because advanced tumors become resistant to these therapies.

To help those afflicted with late stage prostate cancer, scientists are trying to understand the nature of prostate cancer cells and what makes them so “deadly”. By understanding the biology behind these tumor cells, they hope to develop better therapies to treat the late-stage forms of this disease.

UCLA scientists Bryan Smith and Owen Witte. (Image credit: UCLA Broad Stem Cell Research Center)

UCLA scientists Bryan Smith and Owen Witte. (Image credit: UCLA Broad Stem Cell Research Center)

But don’t worry, help is already on its way. Two groups from the University of California, Los Angeles and the University of California, Santa Cruz published a breakthrough discovery yesterday on the similarity between prostate cancer cells and prostate stem cells. The study was published in the journal PNAS and was led by senior author and director of the UCLA Broad Stem Cell Research Center, Dr. Owen Witte.

Using bioinformatics, Witte and his team compared the gene expression profiles of late-stage, metastatic prostate cancer cells sourced from tumor biopsies of living patients to healthy cell types in the male prostate. Epithelial cells are one of the main cell types in the prostate (they form the prostate glands) and they come in two forms: basal and luminal. When they compared the gene expression profiles of the prostate cancer cells to healthy prostate epithelial cells, they found that the cancer cells had a similar profile to normal prostate epithelial basal stem cells.

Image of a prostate cancer tumor. Green and red represent different stem cell traits and the yellow areas show where two stem cell traits are expressed together. (Image credit: UCLA Broad Stem Cell Research Center)

Image of a prostate cancer tumor. Green and red represent different stem cell traits and the yellow areas show where two stem cell traits are expressed together. (Image credit: UCLA Broad Stem Cell Research Center)

In fact, they discovered a 91-gene signature specific to the basal stem cells in the prostate. This profile included genes important for stem cell signaling and invasiveness. That meant that the metastatic prostate cancer cells also expressed “stem-like” genes.

First author Bryan Smith explained how their results support similar findings for other types of cancers. “Evidence from cancer research suggests that aggressive cancers have stem–cell-like traits. We now know this to be true for the most aggressive form of prostate cancer.”

So what does this study mean for prostate cancer patients? I’ll let Dr. Witte answer this one…

Treatments for early stage prostate cancer are often successful, but therapies that target the more aggressive and late-stage forms of the disease are urgently needed. I believe this research gives us important insight into the cellular nature of aggressive prostate cancer. Pinpointing the cellular traits of cancer — what makes those cells grow and spread — is crucial because then we can possibly target those traits to reverse or stop cancer’s progression. Our findings will inform our work as we strive to find treatments for aggressive prostate cancer.


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