Study: Stem cells in ovaries may grow new eggs
By raymumme
(CBS/AP) Stem cells in young women's ovaries are capable of producing new eggs, according to a new study. The findings challenge 60 years of dogma that women are born with all the eggs they'll ever have.
PICTURES: Human eggs: 9 fascinating facts
For the study, published in the Feb. 26 issue of Nature Medicine and led by Jonathan Tilly of Massachusetts General Hospital, researchers examined healthy human ovaries donated by 20-something Japanese women who were undergoing a sex-change operation. The researchers fished out stem cells by searching for a protein found only on the surface of stem cells. The researchers then injected those stem cells into pieces of human ovary, transplanting the tissue under the skin of mice, to provide the tissue with a nourishing blood supply.
What happened? New egg cells formed within two weeks.
That's still a long way from showing they'll mature into usable, quality eggs, David Albertini, director of the University of Kansas' Center for Reproductive Sciences, cautioned.
Still, these findings could lead to better treatments for women left infertile because of disease - or simply because they're getting older.
"Our current views of ovarian aging are incomplete. There's much more to the story than simply the trickling away of a fixed pool of eggs," Tilly, who has long hunted these cells in a series of controversial studies, said.
Tilly's previous work has drawn skepticism, and independent experts urged caution about the latest findings, so the next step is to see whether other laboratories can verify the work. If the findings are confirmed, then it would take years of additional research to learn how to use the cells, Teresa Woodruff, fertility preservation chief at Northwestern University's Feinberg School of Medicine, said.
"This is experimental," Dr. Avner Hershlag, chief of the Center for Human Reproduction at North Shore-LIJ Health System in Manhasset, N.Y., told HealthDay. He said the study is "exciting" but emphasized the work is still very preliminary. "This is a beginning of perhaps something that could bring in new opportunities, but it's going to be a long time in my estimation until clinically we'll be able to actually have human eggs created from stem cells that make babies."
Still, even a leading critic said such research may help dispel some of the enduring mystery surrounding how human eggs are born and mature.
"This is going to spark renewed interest, and more than anything else it's giving us some new directions to work in," Albertini said. While he has plenty of questions about the latest work, "I'm less skeptical," he said.
Scientists have long taught that all female mammals are born with a finite supply of egg cells, called ooctyes, that runs out in middle age. Tilly, Mass General's reproductive biology director, first challenged that notion in 2004, reporting that the ovaries of adult mice harbor some egg-producing stem cells. Recently, Tilly noted, a lab in China and another in the U.S. also have reported finding those rare cells in mice.
More work is needed to tell exactly what these cells are, cautioned reproductive biologist Kyle Orwig of the University of Pittsburgh Medical Center, who has watched Tilly's work with great interest.
But if they're really competent stem cells, Orwig asked, then why would women undergo menopause? Indeed, something so rare wouldn't contribute much to a woman's natural reproductive capacity, added Northwestern's Woodruff.
Tilly argues that using stem cells to grow eggs in lab dishes might one day help preserve cancer patients' fertility. Today, Woodruff's lab and others freeze pieces of girls' ovaries before they undergo fertility-destroying chemotherapy or radiation. They're studying how to coax the immature eggs inside to mature so they could be used for in vitro fertilization years later when the girls are grown. If that eventually works, Tilly says stem cells might offer a better egg supply.
Here is the original post:
Study: Stem cells in ovaries may grow new eggs
- Jessner's Lymphocytic Infiltration of the Skin Mimicking Rosacea: A Rare Case Presentation - Dermatology Times - April 28th, 2024
- Device improves stem cell generation and chance for accessible Alzheimer's cell therapy | KTH Royal Institute of ... - TT Nyhetsbyrn - April 28th, 2024
- Colossal Creates Elephant Stem Cells for the First Time in Quest to Revive the Woolly Mammoth - Singularity Hub - March 18th, 2024
- Vitamin A could have a key role in both stem cell biology and wound healing: Study - Medical Dialogues - March 10th, 2024
- A dive into the genetic history of India, and the role of vitamin A in skin repair - Science - March 10th, 2024
- Herbosa: Clinic under probe after skin treatments linked to womans death - Philstar.com - January 22nd, 2024
- These Will Be the Biggest Skin-Care Trends of 2024 - Allure - December 28th, 2023
- Sorry, But These 10 Skincare Products Are A Scam - Refinery29 - December 12th, 2023
- Cyclerion Strengthens Board of Directors with Experienced Company Builder and Cutting-edge Innovator - December 4th, 2023
- Aptose Appoints Fletcher Payne Chief Business Officer, Expanding his Executive Role - December 4th, 2023
- Opthea to Present at the FLORetina 2023 Congress - December 4th, 2023
- HUTCHMED Highlights Clinical Data to be Presented at 2023 ESMO Asia and ESMO Immuno-Oncology Congresses - December 4th, 2023
- AC Immune Strengthens Management, Appoints Madiha Derouazi as CSO and Christopher Roberts as CFO - December 4th, 2023
- Publication of a transparency notification received from Tolefi SA (Article 14 §1 of the Law of 2 May 2007) - December 4th, 2023
- Annovis Bio Appoints Andrew Walsh as Vice President Finance - December 4th, 2023
- Foghorn Therapeutics Announces Clinical Data from Phase 1 Study of FHD-286, a Novel BRG1/BRM Inhibitor, in Patients with Advanced Hematologic... - December 4th, 2023
- Akari Therapeutics Appoints Experienced Life Sciences Entrepreneur Samir R. Patel, M.D. to Board of Directors - December 4th, 2023
- Ovid Therapeutics to Present Five Abstracts Supporting its Epilepsy Programs at the 77th American Epilepsy Society Annual Meeting (2023) - December 4th, 2023
- Spectral Medical Announces CFO Departure - December 4th, 2023
- Are STEM CELL EXOSOMES the secret to a 'snatched' jawline? Discover the products that influencers are claiming - Daily Mail - November 18th, 2023
- Defence Mechanisms: Four ways your body is protecting you every time you fall sick - indulgexpress - May 16th, 2023
- Treat Yourself to a Spa Day With a $100 Deal on $600 Worth of Products From Elemis, 111SKIN, Nest & More - E! NEWS - May 16th, 2023
- INTERNATIONAL STEM CELL CORP MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS (form 10-K) - Marketscreener.com - April 5th, 2023
- Skin Regeneration: The Science and How to Boost It - Healthline - March 9th, 2023
- Treat Yourself to a Spa Day With a $100 Deal on $600 Worth of Products From Elemis, U Beauty, Nest & More - E! NEWS - March 1st, 2023
- 7-year-old vows to find a cure for brother in need of bone marrow transplant - WJLA - February 21st, 2023
- World's most radioactive man 'cried blood' as his skin melted in 83-day nightmare - Times Now - February 4th, 2023
- How old are you, really? The answer is written on your face. - National Geographic UK - February 4th, 2023
- Skin: Layers, Structure and Function - Cleveland Clinic - January 27th, 2023
- Human skin | Definition, Layers, Types, & Facts | Britannica - January 27th, 2023
- Skin Disorders: Pictures, Causes, Symptoms, and Treatment - Healthline - January 27th, 2023
- Skin care: 5 tips for healthy skin - Mayo Clinic - January 27th, 2023
- Skin Care and Aging | National Institute on Aging - January 27th, 2023
- Wrinkles - Symptoms and causes - Mayo Clinic - January 27th, 2023
- Dry skin - Symptoms and causes - Mayo Clinic - January 27th, 2023
- Stem cells: a brief history and outlook - Science in the News - January 3rd, 2023
- Still Drinking Green Tea? Doctor Reveals A Healthier Drink With Proven Benefits For Diabetes, Aging, Oxidative Stress, And Cancer - Revyuh - January 3rd, 2023
- RUDN Physician And Russian Scientists Investigate Long-term Effects Of Treating Diabetic Ulcers With Stem Cells - India Education Diary - December 25th, 2022
- The Use of Stem Cells in Burn Wound Healing: A Review - Hindawi - December 1st, 2022
- FACTORFIVE Skincare The Power of Stem Cells for Skin - December 1st, 2022
- Embryonic Stem Cells - The Definitive Guide | Biology Dictionary - December 1st, 2022
- From pro soccer hopeful to hip hop artist with illness and addiction along the way, Tymaz Bagbani releases debut album - Toronto Star - December 1st, 2022
- Stem Cells | The ALS Association - November 22nd, 2022
- What is a stem cell? YourGenome - October 29th, 2022
- Skin Cell - The Definitive Guide | Biology Dictionary - October 29th, 2022
- Explora Journeys Plans Extensive Fitness And Well-Being Initiatives At Sea, Right On Trend - Forbes - October 29th, 2022
- Ahead of the holiday shopping season, Amazon kicks off second annual Holiday Beauty Haul on Oct. 24 - KXAN.com - October 21st, 2022
- Human skin color - Wikipedia - October 13th, 2022
- Mesenchymal Stem Cells | Properties, Process, Functions, & Therapies - October 13th, 2022
- Skin Grafting, Cryopreservation, and Diseases: A Review Article - Cureus - October 13th, 2022
- Anti-ageing cosmetics: Can they turn back the hands of the clock? - The Sunday Guardian Live - The Sunday Guardian - October 13th, 2022
- Brennand named Elizabeth Mears and House Jameson Professor of Psychiatry - Yale News - October 13th, 2022
- The Switch to Regenerative Medicine - Dermatology Times - October 13th, 2022
- Last Chance to Get The Collagen-Infused Massage Oil That Moisturizes Skin & Diminishes Cellulite For Less Than $20 - msnNOW - October 13th, 2022
- Addison's Disease Explained: Causes, Symptoms, And Treatments - Health Digest - October 13th, 2022
- Stem Cells Therapy for Autism: Does it Work? - October 5th, 2022
- Stem-like CD8 T cells mediate response of adoptive cell ... - PubMed - October 5th, 2022
- 6 Under Eye Products You Need To Have STAT - Grazia India - October 5th, 2022
- CellResearch Corporation (CRC) to present promising new stem cell products for the treatment of chronic diabetic foot ulcers at the world's premier... - September 27th, 2022
- Reprogramming pig cells leads way for new regenerative therapies - National Hog Farmer - September 27th, 2022
- A glimpse into Indian consumers expectations for cosmetic treatments and consumption insights - The Financial Express - September 27th, 2022
- Tajmeel redefines beauty to give its patients the best results - Gulf News - September 27th, 2022
- Here Is Why You Heal Slower As You Age - Health Digest - September 27th, 2022
- Creating stem cells from minipigs offers promise for improved treatments - University of Wisconsin-Madison - September 19th, 2022
- Israeli Biotech Firm Plans to Create Human Embryos to Harvest Organs, Field Experts Say There are Ethical Concerns - CBN.com - September 19th, 2022
- CellResearch Corporation (CRC) announces positive results of Phase I study for CorLiCyte - PR Newswire - September 19th, 2022
- The best CBD and hemp products for pampering your skin this fall - Leafly - September 19th, 2022
- Benjamin Button For Real? Scientists Are Close To Cracking The Code To Reverse Aging - Worldcrunch - September 19th, 2022
- I took an international trip with my frozen eggs to learn about the fertility industry - MIT Technology Review - September 19th, 2022
- Propanc Biopharma Reports Significant Effects of PRP Against the Tumor Microenvironment - Business Wire - September 11th, 2022
- 6 Ingredients to Avoid Putting on Your Skin - Healthline - September 3rd, 2022
- Regenerative Properties of the Newborn Heart Offers Hope for Those With Congenital Heart Disease - The Epoch Times - September 3rd, 2022
- Meet White Orange: The Vitamin C Skin Care Brand For Sensitive Skin - Bustle - September 3rd, 2022
- Rejuvenation Roundup August 2022 - Lifespan.io News - September 3rd, 2022
- To better understand Parkinson's disease, this San Diego expert sent her own cells to space - The San Diego Union-Tribune - August 26th, 2022
- Inside the race to make human sex cells in the lab - MIT Technology Review - August 26th, 2022
- Global Biomaterials Market to Reach Value of $372.7 Billion by 2028 | Demand For Biomaterials in the Healthcare Industry will Grow by 53% Over the... - August 26th, 2022
- A Groovy Guide to Anti-Aging Products With CBD and Mushrooms - Out Magazine - August 26th, 2022
- New milestone organoid synthesis will boost disease and drug development research - RegMedNet - August 10th, 2022
- Victoria Beckham and Kim Kardashian are fans of Augustinus Baders skincare range - and you can get 20% off - The Mirror - August 10th, 2022