As of this moment, there are over two million podcasts and over 48 million episodes to listen to on your favorite listening device. If you’re a true crime enthusiast like me, you’ve surely heard of Casefile or one of the other 94 podcasts on the topic. But what if you’re looking for something a little less ghastly and a little more uplifting?
The Stem Cell Podcast is an informative and entertaining resource for scientists and science enthusiasts (or really, anyone) interested in learning about the latest developments in stem cell research.
On their latest episode, dynamic co-hosts and research scientists Dr. Daylon James and Dr. Arun Sharma sit down with our President & CEO, Dr. Maria Millan, to discuss the impact of California’s culture of innovation on CIRM, the challenge of balancing hope vs. hype in the context of stem cell research/therapies, and the evolution of the agency over the past 15 years.
Listen on as Dr. Millan highlights some of CIRM’s greatest victories and shares our mission for the future.
About 10% of Americans suffer from knee osteoarthritis, a painful condition that can really impair mobility and quality of life. It’s often caused by an injury to cartilage, say when you were playing sports in high school or college, and over time it continues to degenerate and ultimately results in the loss of both cartilage and bone in the joint.
Current treatments involve either medication to control the pain or surgery. Medication works up to a point, but as the condition worsens it loses effectiveness. Knee replacement surgery can be effective, but is a serious, complicated procedure with a long recovery time. That’s why the governing Board of the California Institute for Regenerative Medicine (CIRM) voted to invest almost $6 million in an innovative stem cell therapy approach to helping restore articular cartilage in the knee.
Dr. Frank Petrigliano, Chief of the Epstein Family Center for Sports Medicine at Keck Medicine of the University of Southern California (USC), is using pluripotent stem cells to create chondrocytes (the cells responsible for cartilage formation) and then seeding those onto a scaffold. The scaffold is then surgically implanted at the site of damage in the knee. Based on scientific data, the seeded scaffold has the potential to regenerate the damaged cartilage, thus decreasing the likelihood of progression to knee osteoarthritis. In contrast to current methods, this new treatment could be an off-the-shelf approach that would be less costly, easier to administer, and might also reduce the likelihood of progression to osteoarthritis.
This is a late-stage pre-clinical program. The goals are to manufacture clinical grade product, carry out extensive studies to demonstrate safety of the approach, and then file an IND application with the FDA, requesting permission to test the product in a clinical trial in people.
“Damage to the cartilage in our knees can have a big impact on quality of life,” says Dr. Maria T. Millan, MD, President and CEO of CIRM. “It doesn’t just cause pain, it also creates problems carrying out simple, everyday activities such as walking, climbing stairs, bending, squatting and kneeling. Developing a way to repair or replace the damaged cartilage to prevent progression to knee osteoarthritis could make a major difference in the lives of millions of Americans. This program is a continuation of earlier stage work funded by CIRM at the Basic Biology and Translational stages, illustrating how CIRM supports scientific programs from early stages toward the clinic.”
As someone with a family history of type 1 diabetes (T1D) I know how devastating the condition can be. I also know how challenging it can be to keep it under control and the consequences of failing to do that. Not maintaining healthy blood sugar levels can have a serious impact on the heart, kidney, eyes, nerves, and blood vessels. It can even be fatal.
Right now, controlling T1D means being careful about what you eat, when you eat and how much you eat. It also means regularly checking your blood throughout the day to see if the glucose level is too high or too low. If it’s too high you need to inject insulin; if it’s too low you need to take a fast-acting carbohydrate such as fruit juice or glucose to try and restore it to a healthy level.
That’s why two new approaches to T1D that CIRM has supported are so exciting. They both use small devices implanted under the skin that contain stem cells. The cells can both monitor blood sugar and, if it’s too high, secrete insulin to bring it down.
We sat down with two key members of the Encellin and ViaCyte teams, Dr. Crystal Nyitray and Dr. Manasi Jaiman, to talk about their research, how it works, and what it could mean for people with T1D. That’s in the latest episode of our podcast ‘Talking ‘Bout (re)Generation’.
It’s always lovely to end the week on a bright note and that’s certainly the case this week, thanks to some encouraging news about CIRM-funded research targeting blood disorders that affect the immune system.
Stanford’s Dr. Rosa Bacchetta and her team learned that their proposed therapy for IPEX Syndrome had been given the go-ahead by the Food and Drug Administration (FDA) to test it in people in a Phase 1 clinical trial.
IPEX Syndrome (it’s more formal and tongue twisting name is Immune dysregulation Polyendocrinopathy Enteropathy X-linked syndrome) is a life-threatening disorder that affects children. It’s caused by a mutation in the FOXP3 gene. Immune cells called regulatory T Cells normally function to protect tissues from damage but in patients with IPEX syndrome, lack of functional Tregs render the body’s own tissues and organs to autoimmune attack that could be fatal in early childhood.
Current treatment options include a bone marrow transplant which is limited by available donors and graft versus host disease and immune suppressive drugs that are only partially effective. Dr. Rosa Bacchetta and her team at Stanford will use gene therapy to insert a normal version of the FOXP3 gene into the patient’s own T Cells to restore the normal function of regulatory T Cells.
This approach has already been accorded an orphan drug and rare pediatric disease designation by the FDA (we blogged about it last year)
Orphan drug designation is a special status given by the Food and Drug Administration (FDA) for potential treatments of rare diseases that affect fewer than 200,000 in the U.S. This type of status can significantly help advance treatments for rare diseases by providing financial incentives in the form of tax credits towards the cost of clinical trials and prescription drug user fee waivers.
Under the FDA’s rare pediatric disease designation program, the FDA may grant priority review to Dr. Bacchetta if this treatment eventually receives FDA approval. The FDA defines a rare pediatric disease as a serious or life-threatening disease in which the serious or life-threatening manifestations primarily affect individuals aged from birth to 18 years and affects fewer than 200,000 people in the U.S.
Congratulations to the team and we wish them luck as they begin the trial.
Someone who needs no introduction to regular readers of this blog is UCLA’s Dr. Don Kohn. A recent study in the New England Journal of Medicine highlighted how his work in developing a treatment for severe combined immune deficiency (SCID) has helped save the lives of dozens of children.
Now a new study in the journal Blood shows that those benefits are long-lasting, with 90% of patients who received the treatment eight to 11 years ago still disease-free.
In a news release Dr. Kohn said: “What we saw in the first few years was that this therapy worked, and now we’re able to say that it not only works, but it works for more than 10 years. We hope someday we’ll be able to say that these results last for 80 years.”
Ten children received the treatment between 2009 and 2012. Nine were babies or very young children, one was 15 years old at the time. That teenager was the only one who didn’t see their immune system restored. Dr. Kohn says this suggests that the therapy is most effective in younger children.
Dr. Kohn has since modified the approach his team uses and has seen even more impressive and, we hope, equally long-lasting results.
World Mental Health Day is observed on 10 October every year. It’s a time to try and raise awareness about mental health issues and the impact they have not just on the individual but their family, their community and all of us. The theme for World Mental Health Day 2021 is ‘mental health in an unequal world.’
To highlight the issues raised on World Mental Health Day we talked to one of CIRM’s newest Board member, Dr. Le Ondra Clark Harvey. She’s a psychologist and the CEO of the California Council of Community Behavioral Health Agencies (CCCBHA) a statewide advocacy organization representing mental health and substance use disorder non-profit agencies that collectively serve over 750 thousand Californians annually.
What made you want to be on the CIRM Board?
I was recommended to apply for the CIRM Board by a member of CCCBHA, the organization I am privileged to lead and serve. I saw the position as an opportunity to shed light on cognitive disorders that many do not readily think of when they think about stem cell research. The appointment also has personal meaning to me as I have a grandfather who is a cancer survivor and who has an Alzheimer’s diagnosis. Breast cancer has also affected women in my family, including myself, and I know that the research that CIRM funds can assist with finding a cure and providing accessible treatment options for all Californians.
A lot of people might not think that stem cells would have a role in addressing mental health issues, what role do you think they can play?
You are correct, most people do not immediately think of stem cell therapies as a remedy to brain health disorders. However, there are many cognitive disorders and symptoms that can be mitigated, and hopefully someday ameliorated, as a result of stem cell therapies. For example, autism and other developmental disabilities, dementia, Alzheimer’s, Tourette’s and tardive dyskinesia.
What are the biggest challenges we face in addressing mental health issues in this country?
Stigma remains a significant barrier that impacts the ability to provide – particularly among racially and ethnically diverse communities. In my own practice, I’ve seen how stigma can prevent individuals from entering into care even when access issues have been mitigated. Public awareness campaigns, and culturally specific advocacy efforts and practices must be integrated into treatment models in order to provide individuals with the specific care they need.
Do you think that the widespread media attention paid to Naomi Osaka and Simone Biles has helped raise awareness about mental health and perhaps also reduced some of the stigma surrounding it?
Yes, I do. Also, the pandemic has opened many individuals eyes, and engendered a sense of empathy, about the prevalence and impact that isolation and loneliness can have on a person.
If you have read the headlines lately, you’ll know that the COVID-19 pandemic is having a huge impact on the shipping industry. Container vessels are forced to sit out at anchor for a week or more because there just aren’t enough dock workers to unload the boats. It’s a simple rule of economics, you can have all the demand you want but if you don’t have the people to help deliver on the supply side, you are in trouble.
The same is true in regenerative medicine. The field is expanding rapidly and that’s creating a rising demand for skilled workers to help keep up. That doesn’t just mean scientists, but also technicians and other skilled individuals who can ensure that our ability to manufacture and deliver these new therapies is not slowed down.
That’s one of the reasons why CIRM has been a big supporter of training programs ever since we were created by the voters of California when they approved Proposition 71. And now we are kick-starting those programs again to ensure the field has all the talented workers it needs.
Last week the CIRM Board approved 18 programs, investing more than $86 million, as part of the Agency’s Research Training Grants program. The goal of the program is to create a diverse group of scientists with the knowledge and skill to lead effective stem cell research programs.
The awards provide up to $5 million per institution, for a maximum of 20 institutions, over five years, to support the training of predoctoral graduate students, postdoctoral trainees, and/or clinical trainees.
This is a revival of an earlier Research Training program that ran from 2006-2016 and trained 940 “CIRM Scholars” including:
• 321 PhD students • 453 Postdocs • 166 MDs
These grants went to academic institutions from UC Davis in Sacramento to UC San Diego down south and everywhere in-between. A 2013 survey of the students found that most went on to careers in the industry.
56% continued to further training
14% advanced to an academic research faculty position
10.5% advanced to a biotech/industry position
12% advanced to a non-research position such as teaching, medical practice, or foundation/government work
The Research Training Grants go to:
CIRM Training Program in Translational Regenerative Medicine
TRANSCEND – Training Program to Advance Interdisciplinary Stem Cell Research, Education, and Workforce Diversity
UC Los Angeles
UCLA Training Program in Stem Cell Biology
University of Southern California
Training Program Bridging Stem Cell Research with Clinical Applications in Regenerative Medicine
UC Santa Cruz
CIRM Training Program in Systems Biology of Stem Cells
CIRM Regenerative Medicine Research Training Program
City of Hope
Research Training Program in Stem Cell Biology and Regenerative Medicine
CIRM Scholar Training Program
Training the Next Generation of Biologists and Engineers for Regenerative Medicine
CIRM Cell and Gene Therapy Training Program 2.0
Children’s Hospital of Los Angeles
CIRM Training Program for Stem Cell and Regenerative Medicine Research
UC San Diego
Interdisciplinary Stem Cell Training Grant at UCSD III
Training Scholars in Regenerative Medicine and Stem Cell Research
UC San Francisco
Scholars Research Training Program in Regenerative Medicine, Gene Therapy, and Stem Cell Research
A Multidisciplinary Stem Cell Training Program at Sanford Burnham Prebys Institute, A Critical Component of the La Jolla Mesa Educational Network
UC Santa Barbara
CIRM Training Program in Stem Cell Biology and Engineering
CIRM Scholars Comprehensive Research Training Program
Lundquist Institute for Biomedical Innovation
Stem Cell Training Program at the Lundquist Institute
These are not the only awards we make to support training the next generation of scientists. We also have our SPARK and Bridges to Stem Cell Research programs. The SPARK awards are for high school students, and the Bridges program for graduate or Master’s level students.
Cancers of the blood, bone marrow and lymph nodes (also called hematologic malignancies) are the most common form of cancer in children and young adults. Current treatments can be effective but can also pose life-threatening health risks to the child. Now researchers at Stanford have developed a new approach and the Board of the California Institute for Regenerative Medicine (CIRM) voted to support that approach in a clinical trial.
The Board approved investing $11,996,634 in the study, which is the Stem Cell Agency’s 76th clinical trial.
The current standard of care for cancers such as acute leukemias and lymphomas is chemotherapy and a bone marrow (also called HSCT) transplant. However, without a perfectly matched donor the risk of the patient’s body rejecting the transplant is higher. Patients may also be at greater risk of graft vs host disease (GVHD), where the donor cells attack the patient’s body. In severe cases GVHD can be life-threatening.
Dr. Maria Grazia Roncarolo and her team at Stanford will test an immunotherapy cell approach using a therapy that is enriched with specialized immune cells called type 1 regulatory T (Tr1) cells. These cells will be infused into the patient following the bone marrow transplant. Both the Tr1 cells and the bone marrow will come from the same donor. The hope is this will help provide the patient’s immune system with these regulatory cells to combat life-threatening graft versus host disease and increase the success of treatment and bone marrow (HSCT) transplant.
“Every year around 500 children receive stem cell transplants in California, and while many children do well, too many experiences a rejection of the transplant or a relapse of the cancer,” says Dr. Maria T. Millan, President and CEO of CIRM. “Finding an improved therapy for these children means a shorter stay in the hospital, less risk of the need for a second transplant, and a greater quality of life for the child and the whole family.”
The CIRM Board has previously approved funding for 12 other clinical trials targeting cancers of the blood. You can read about them here.
Alzheimer’s research has been in the news a lot lately, and not for the right reasons. The controversial decision by the Food and Drug Administration (FDA) to approve the drug Aduhelm left many people wondering how, when, or even if it should be used on people battling Alzheimer’s disease. Now a new study is raising questions about many of the clinical trials used to test medications like Aduhelm.
The research, published in the journal Jama Neurology, looked at 302 studies on dementia published in 2018 and 2019. Most of these studies were carried out in North America or Europe, and almost 90 percent of those studied were white.
In an accompanying editorial in the journal, Dr. Cerise Elliott, PhD, of the National Institute on Aging (NIA) in Bethesda, Maryland, and co-authors wrote that this limited the value of the studies: “This, combined with the fact that only 22% of the studies they analyzed even reported on race and ethnicity, and of those, a median 89% of participants were white, reflects the fact that recruitment for research participation is challenging; however, it is unacceptable that studies continue to fail to report participant demographics and that publishers allow such omissions.”
That bias is made all the more glaring by the fact that recent data from the Centers for Disease Control and Prevention shows that among people 65 and older, the Black community has the highest prevalence of Alzheimer’s disease and related dementias (13.8%), followed by Latinx (12.2%), non-Hispanic white (10.3%), American Indian and Alaskan Native (9.1%), and Asian and Pacific Islander (8.4%) populations.
The researchers admitted that the limited sample size – more than 40 percent of the studies they looked at included fewer than 50 patients – could have impacted their findings. Even so this clearly suggests there is a huge divide between the people at greatest risk of developing Alzheimer’s, or some other form of dementia, and the people being studied.
In the editorial, Elliott and his colleagues wrote that without a more diverse and balanced patient population this kind of research: “will continue to underrepresent people most affected by the disease and perpetuate systems that exclude important valuable knowledge about the disease.”
“For years, the Journal has published studies that simply do not include enough participants from the racial and ethnic groups that are disproportionately affected by the illnesses being studied to support any conclusions about their treatment. In the United States, for example, Black Americans have high rates of hypertension and chronic kidney disease, Hispanic Americans have the highest prevalence of nonalcoholic fatty liver disease, Native Americans are disproportionately likely to have metabolic syndrome, and Asian Americans are at particular risk for hepatitis B infection and subsequent cirrhosis, but these groups are frequently underrepresented in clinical trials and cohort studies.”
“For too long, we have tolerated conditions that actively exclude groups from critical resources in health care delivery, research, and education. This exclusion has tragic consequences and undermines confidence in the institutions and the people who are conducting biomedical research. And clinicians cannot know how to optimally prevent and treat disease in members of communities that have not been studied.”
The encouraging news is that, finally, people are recognizing the problem and trying to come up with ways to correct it. The not so encouraging is that it took a pandemic to get us to pay attention.
At CIRM we are committed to being part of the solution. We are now requiring everyone who applies to us for funding to have a written plan on Diversity, Equity and Inclusion, laying out how their work will reflect the diversity of California. We know this will be challenging for all of us. But the alternative, doing nothing, is no longer acceptable.
Heart disease and stroke are two of the leading causes of death and disability and for people who have experienced either their treatment options are very limited. Current therapies focus on dealing with the immediate impact of the attack, but there is nothing to deal with the longer-term impact. The CIRM Board hopes to change that by funding promising work for both conditions.
Dr. Gary Steinberg and his team at Stanford were awarded almost $12 million to conduct a clinical trial to test a therapy for motor disabilities caused by chronic ischemic stroke. While “clot busting” therapies can treat strokes in their acute phase, immediately after they occur, these treatments can only be given within a few hours of the initial injury. There are no approved therapies to treat chronic stroke, the disabilities that remain in the months and years after the initial brain attack.
Dr. Steinberg will use embryonic stem cells that have been turned into neural stem cells (NSCs), a kind of stem cell that can form different cell types found in the brain. In a surgical procedure, the team will inject the NSCs directly into the brains of chronic stroke patients. While the ultimate goal of the therapy is to restore loss of movement in patients, this is just the first step in clinical trials for the therapy. This first-in-human trial will evaluate the therapy for safety and feasibility and look for signs that it is helping patients.
Another Stanford researcher, Dr. Crystal Mackall, was also awarded almost $12 million to conduct a clinical trial to test a treatment for children and young adults with glioma, a devastating, aggressive brain tumor that occurs primarily in children and young adults and originates in the brain. Such tumors are uniformly fatal and are the leading cause of childhood brain tumor-related death. Radiation therapy is a current treatment option, but it only extends survival by a few months.
Dr. Crystal Mackall and her team will modify a patient’s own T cells, an immune system cell that can destroy foreign or abnormal cells. The T cells will be modified with a protein called chimeric antigen receptor (CAR), which will give the newly created CAR-T cells the ability to identify and destroy the brain tumor cells. The CAR-T cells will be re-introduced back into patients and the therapy will be evaluated for safety and efficacy.
Stanford made it three in a row with the award of almost $7 million to Dr. Joe Wu to test a therapy for left-sided heart failure resulting from a heart attack. The major issue with this disease is that after a large number of heart muscle cells are killed or damaged by a heart attack, the adult heart has little ability to repair or replace these cells. Thus, rather than being able to replenish its supply of muscle cells, the heart forms a scar that can ultimately cause it to fail.
Dr. Wu will use human embryonic stem cells (hESCs) to generate cardiomyocytes (CM), a type of cell that makes up the heart muscle. The newly created hESC-CMs will then be administered to patients at the site of the heart muscle damage in a first-in-human trial. This initial trial will evaluate the safety and feasibility of the therapy, and the effect upon heart function will also be examined. The ultimate aim of this approach is to improve heart function for patients suffering from heart failure.
“We are pleased to add these clinical trials to CIRM’s portfolio,” says Maria T. Millan, M.D., President and CEO of CIRM. “Because of the reauthorization of CIRM under Proposition 14, we have now directly funded 75 clinical trials. The three grants approved bring forward regenerative medicine clinical trials for brain tumors, stroke, and heart failure, debilitating and fatal conditions where there are currently no definitive therapies or cures.”
Anyone who knows anything about CIRM knows about Bob Klein. He’s the main author and driving force behind both Proposition 71 and Proposition 14, the voter-approved ballot initiatives that first created and then refunded CIRM. It’s safe to say that without Bob there’d be no CIRM.
Recently we had the great good fortune to sit down with Bob to chat about the challenges of getting a proposition on the ballot in a time of pandemic and electoral pandemonium, what he thinks CIRM’s biggest achievements are (so far) and what his future plans are.