The ‘supercells’ that cured an infant’s grave genetic illness – FRANCE 24
By daniellenierenberg
McLean (United States) (AFP)
When a person's immune system is impaired by a genetic disease, a bone-marrow transplant can be a powerful therapeutic tool, but with a major downside: during the first few months the recipient's defenses against viruses are severely weakened. The slightest infection can lead to a hospital trip.
A still-experimental type of treatment known as T-cell therapy aims to assist during this vulnerable period -- the months during which the body is rebuilding its natural defenses. After two decades of clinical trials, the technology has been refined, and is being used to treat more and more patients, many of them children.
A boy named Johan is one of them.
Today he is a mischievous, smiling toddler with a thick shock of light-brown hair, who never tires, playfully tormenting the family's puppy, Henry.
There is no sign of the three-year-long medical and emotional roller-coaster ride he and his family, who live in an affluent Washington suburb, have been on.
The first traumatic surprise came with the results of a pregnancy test: Johan was not planned.
"That was a huge shock. I cried," said his mother, 39-year-old Maren Chamorro.
- Risky procedure -
She had known since childhood that she carried a gene that can be fatal in a child's first 10 years, chronic granulomatous disease (CGD).
Her brother died of it at the age of seven. The inexorable laws of genetics meant that Maren had a one in four chance of transmitting it to her child.
For their first children, she and her husband Ricardo had chosen in-vitro fertilization, allowing the embryos to be genetically tested before implantation.
Their twins Thomas and Joanna were born -- both disease-free -- seven and a half years ago.
But in Johan's case, a post-birth genetic test quickly confirmed the worst: he had CGD.
After conferring with experts at Children's National Hospital in Washington, the couple took one of the most important decisions of their lives: Johan would receive a bone-marrow transplant, a risky procedure but one that would give him a chance of a cure.
"Obviously, the fact that Maren had lost a sibling at a young age from the disease played a big role," Ricardo confided.
Bone marrow, the spongy tissue inside bones, serves as the body's "factory" for the production of blood cells -- both red and white.
- His brother's immune system -
Johan's white blood cells were incapable of fighting off bacteria and fungal infections. A simple bacterial infection, of negligible concern in a healthy child, could spread out of control in his young body.
Luckily, Johan's brother Thomas, six years old at the time, was a perfect match. In April 2018, doctors first "cleansed" Johan's marrow using chemotherapy. They then took a small amount of marrow from Thomas's hip bones using a long, thin needle.
From that sample they extracted "supercells," as Thomas calls them -- stem cells, which they reinjected into Johan's veins. Those cells would eventually settle in his bone marrow -- and begin producing normal white blood cells.
The second step was preventive cell therapy, under an experimental program led by immunologist Michael Keller at Children's National Hospital.
The part of the immune system that protects against bacteria can be rebuilt in only a matter of weeks; but for viruses, the natural process takes at least three months.
- Hurdles remain -
From Thomas's blood, doctors extracted specialized white blood cells -- T-cells -- that had already encountered six viruses.
Keller grew them for 10 days in an incubator, creating an army of hundreds of millions of those specialized T-cells. The result: a fluffy white substance contained in a small glass vial.
Those T-cells were then injected into Johan's veins, immediately conferring protection against the six viruses.
"He has his brother's immune system," said Keller, an assistant professor at Children's National.
Johan's mother confirmed as much: today, when Thomas and Johan catch a cold, they have the same symptoms, and for nearly the same amount of time.
"I think it's pretty cool to have immunity from your big brother," Maren Chamorro said.
This therapeutic approach -- boosting the body's immune system using cells from a donor or one's own genetically modified cells -- is known as immunotherapy.
Its main use so far has been against cancer, but Keller hopes it will soon become available against viruses for patients, like Johan, who suffer from depressed immune systems.
The chief obstacles to that happening are the complexity of the process and the costs, which can run to many thousands of dollars. These factors currently restrict the procedure to some 30 medical centers in the United States.
For Johan, a year and a half after his bone marrow transplant, everything points to a complete success.
"It's neat to see him processing things, and especially play outside in the mud," his mother said.
"You know, what a gift!"
Her only concern now is the same as any mother would have -- that when her son does fall ill, others in the family might catch the same bug.
2020 AFP
See more here:
The 'supercells' that cured an infant's grave genetic illness - FRANCE 24
- Efficacy and safety of human umbilical cord-derived mesenchymal stem cells in the treatment of refractory immune ... - Nature.com - April 28th, 2024
- Stem Cell Therapy: Know How The Procedure Stops Cancer - Times Now - April 28th, 2024
- Rejuvenating the immune system by depleting certain stem cells - National Institutes of Health (NIH) (.gov) - April 19th, 2024
- New gene therapy eliminates need for bone marrow transplant. Here's how it works. - CBS News - April 19th, 2024
- New gene therapy eliminates need for bone marrow transplant. Here's how it works. - MSN - April 19th, 2024
- Long Island boy with rare blood disorder undergoes gene therapy - MSN - April 19th, 2024
- Philadelphia Wings player, Connecticut man will be forever bonded by bone marrow donation: "He's my hero" - CBS Philly - April 10th, 2024
- VRD versus VCD as induction therapy before autologous stem cell transplantation in multiple myeloma: a nationwide ... - Nature.com - April 10th, 2024
- Register as a bone marrow donor today and save lives - The Citizen - April 10th, 2024
- Resilient anatomy and local plasticity of naive and stress haematopoiesis - Nature.com - March 26th, 2024
- A Deeper Depth of Response After Salvage Therapy Improves Outcomes of Autologous Stem Cell Transplantation in ... - Cureus - March 26th, 2024
- Iron restriction keeps blood stem cells young, researchers find - Phys.org - March 18th, 2024
- Blood drive, bone marrow testing to be held in local woman's memory - The Winchester Star - March 18th, 2024
- Signal of Benefit for Stem Cell Therapy in Progressive MS - Medscape - March 10th, 2024
- Woman, 22, With Leukemia Recalls Symptoms And New Treatment She Received: EXCLUSIVE - TODAY - March 10th, 2024
- This Swedish startup wants to reduce the cost, and controversy, around stem cell production - TechCrunch - March 10th, 2024
- Outcomes and prognosis of haploidentical haematopoietic stem cell transplantation in children with FLT3-ITD mutated ... - Nature.com - March 10th, 2024
- Harmonizing definitions for hematopoietic recovery, graft rejection, graft failure, poor graft function, and donor ... - Nature.com - March 10th, 2024
- Hematopoietic cell transplantation and cell therapy activity landscape survey in the Kingdom of Saudi Arabia; a report ... - Nature.com - March 10th, 2024
- How an MS friendship led to HSCT and a love of running - Multiple Sclerosis News Today - March 10th, 2024
- Iron Limitation Preserves Youthfulness of Blood Stem Cells - Mirage News - March 10th, 2024
- Allogeneic Hematopoietic Cell Transplantation in Advanced Systemic Mastocytosis: A retrospective analysis of the ... - Nature.com - March 10th, 2024
- AJMC in the Press, February 23, 2024 - AJMC.com Managed Markets Network - February 24th, 2024
- Orca Bio Presents Promising Data on Orca-T in Two Oral Presentations at the 2024 Tandem Meetings of ASTCT and ... - Yahoo Finance - February 24th, 2024
- New approaches to live-track the production of different types of blood cells in mice - Medical Xpress - February 24th, 2024
- If Other Treatments Aren't Working -- Stem Cell Transplant May Be A Good Option In CLL - SurvivorNet - February 24th, 2024
- Expanding the Horizons of Cell and Gene Therapy - RegMedNet - February 24th, 2024
- The strangers who saved each others lives - BBC - February 24th, 2024
- City of Hope Research Featuring the Successful Treatment of the Oldest Patient to Achieve Remission for Leukemia ... - StreetInsider.com - February 15th, 2024
- 3D printing and material processing combined to create artificial bone - Optics.org - February 15th, 2024
- Man, 63, is in remission from HIV five years after receiving groundbreaking stem cell transplant... - The Sun - February 15th, 2024
- Team demonstrates fabrication method to construct 3D structures that mimic bone microstructure - Phys.org - February 15th, 2024
- Hematopoietic Stem Cells and Their Role in Development and Disease Therapy - The Scientist - February 15th, 2024
- Blood cell family trees trace how production changes with aging - MIT News - February 7th, 2024
- New study on promising stem cell-based therapy for Crohn's disease - Medical Xpress - January 30th, 2024
- Second haploidentical bone marrow transplantation with antithymocyte antibody-containing conditioning regimen for ... - Nature.com - January 30th, 2024
- Stem cell study shows how gene activity modulates the amount of immune cell production in mice - Medical Xpress - January 30th, 2024
- Global Stem Cell Therapy Industry Outlook to 2028, Driven by Therapeutic Innovations and Clinical Advancements ... - Yahoo Finance - January 30th, 2024
- 1st-of-its-kind therapy blocks immune attack after stem-cell transplant - Livescience.com - January 22nd, 2024
- Individualized dose of anti-thymocyte globulin based on weight and pre-transplantation lymphocyte counts in pediatric ... - Nature.com - January 22nd, 2024
- Implications of stress-induced gene expression for hematopoietic stem cell aging studies - Nature.com - January 22nd, 2024
- LVHN announces opening of new stem cell transplant center. Here's what that means for the Lehigh Valley - The Morning Call - January 22nd, 2024
- Fast Five Quiz: Chronic GVHD Risk Factors and Prevention - Medscape Reference - January 22nd, 2024
- Could Treatments for HIV and Sickle Cell Open the Gene Therapy Floodgates? - BioSpace - January 22nd, 2024
- Effects of fine particulate matter on bone marrow-conserved hematopoietic and mesenchymal stem cells: a systematic ... - Nature.com - January 14th, 2024
- Donating Bone Marrow and Stem Cells: The Process and What To Expect - On Cancer - Memorial Sloan Kettering - January 14th, 2024
- No, Rep. Steve Scalise Didn't Vote Against Stem Cell Research From Which He Is Now Benefiting - Yahoo News - January 14th, 2024
- Hematopoietic Stem Cell Transplantation Market to Grow Rapidly During the Study Period (2019-2032), Evaluates ... - PR Newswire - January 14th, 2024
- Life-saving donation from Philly athlete saves life: 'Feeling so strong, I owe that all to him' - AOL - January 14th, 2024
- The Key to Creating Blood Stem Cells May Lie in Your Own Blood - ScienceAlert - January 14th, 2024
- Dr Phillips on the Rationale for the GLOBRYTE Trial in Relapsed/Refractory MCL - OncLive - January 14th, 2024
- COVID-19 and HSCT Recipients: Risk Factors and Prevention Measures - Medriva - January 14th, 2024
- Bone Marrow Transplant: Heres What You Need To Know About This Therapy - Times Now - January 5th, 2024
- New insights about the development of hematopoietic stem cells - Drug Target Review - December 28th, 2023
- Bone Marrow Transplantation | Johns Hopkins Medicine - December 20th, 2023
- Stem Cell or Bone Marrow Transplant | American Cancer Society - December 20th, 2023
- Embryonic-stem-cell-derived mesenchymal stem cells relieve experimental contact urticaria by regulating the functions ... - Nature.com - December 20th, 2023
- Researchers discover crucial step in creating blood stem cells - Phys.org - December 20th, 2023
- A niche topic: understanding the development of hematopoietic stem cells - Fred Hutchinson Cancer Center - December 20th, 2023
- Vertex developed a CRISPR cure. Its already on the hunt for something better. - MIT Technology Review - December 20th, 2023
- FDA approves cure for sickle cell disease, the first treatment to use gene-editing tool CRISPR - NBC News - December 12th, 2023
- First therapy using CRISPR technology will treat sickle cell disease - Morning Brew - December 12th, 2023
- 7 medical breakthroughs that gave us hope in 2023 - National Geographic - December 12th, 2023
- Understanding Chronic Myeloid Leukemia: Causes, Symptoms, and Treatment - Everyday Health - December 12th, 2023
- Mansour bin Zayed witnesses inauguration of ADSCC Bone Marrow Transplant & Cellular Therapy Congress 2023 - ZAWYA - November 26th, 2023
- ADSCC Bone Marrow Transplant and Cellular Therapy Congress 2023 to take place in Abu Dhabi - ZAWYA - November 18th, 2023
- Orchard Therapeutics Reports First Quarter 2023 Financial Results and Announces Initiation of Rolling Submission for Biologics License Application of... - May 16th, 2023
- Family of 7-month-old in need of bone marrow transplant hosting donor registration event - CBS Pittsburgh - May 8th, 2023
- Anika Continues to Expand Addressable Market for Tactoset Injectable Bone Substitute with Additional 510(k) Clearance from FDA - Marketscreener.com - April 5th, 2023
- MorphoSys Completes Enrollment of Phase 3 MANIFEST-2 Study of Pelabresib in Myelofibrosis with Topline Results Expected by End of 2023 -... - April 5th, 2023
- VOR BIOPHARMA INC. Management's Discussion and Analysis of Financial Condition and Results of Operations (form 10-K) - Marketscreener.com - March 25th, 2023
- BioRestorative Therapies to Seek FDA Approval to Expand the Clinical Application of BRTX-100 - Marketscreener.com - March 17th, 2023
- BioSenic delivers a new post-hoc analysis of its Phase III JTA-004 trial on knee osteo-arthritis with positive action on the most severely affected... - March 17th, 2023
- JASPER THERAPEUTICS, INC. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS (form 10-K) - Marketscreener.com - March 9th, 2023
- For a range of unmet medical needs, India offers a fantastic opportunity to push cell and gene therapies: B .. - ETHealthWorld - March 9th, 2023
- NGM BIOPHARMACEUTICALS INC Management's Discussion and Analysis of Financial Condition and Results of Operations. (form 10-K) - Marketscreener.com - March 1st, 2023
- Bone health: Tips to keep your bones healthy - Mayo Clinic - January 27th, 2023
- Bone marrow drive held for military wife with cancer - January 27th, 2023
- Bone cancer - Symptoms and causes - Mayo Clinic - January 27th, 2023
- Bone | Definition, Anatomy, & Composition | Britannica - January 19th, 2023