Lab-grown liver organoid to speed up turtle research, making useful traits easier to harness

A team of Iowa State University researchers developed protocols for growing organoids that mimic a turtle liver, the first organoids developed for a turtle and only the second for any reptile. The discovery will aid deeper study of turtle genetics, including the cause of traits with potential medical applications for humans such as the ability to survive weeks without oxygen.

Bar-Ilan University researchers produce “laboratory testicles”

Dr. Nitzan Gonen, a Bar-Ilan University researcher specializing in the process of fetal sex determination, together with research students Aviya Stopel, Cheli Lev and Stav Dahari, has succeeded in creating “laboratory testicles” that may significantly advance understanding of the mechanisms involved in sex determination and provide solutions for male infertility, which affects one in 12 men worldwide.

Artificially grown ‘mini-brains’ without animal components bring opportunities for neuroscience

Researchers at University of Michigan developed a method to produce artificially grown miniature brains — called human brain organoids — free of animal cells that could greatly improve the way neurodegenerative conditions are studied and, eventually, treated. The work offers a solution to overcome Matrigel’s weaknesses.

Fine-tuning 3D lab-grown mini tumors to help predict how patients respond to cancer therapies

Scientists from the UCLA Jonsson Comprehensive Cancer Center have developed a new method to bioprint miniature tumor organoids that are designed to mimic the function and architecture of real tumors. The improved process allows researchers to use an advanced imaging method to study and analyze individual organoids in great detail, which can help researchers identify personalized treatments for people with rare or hard-to-treat cancers.

Lab-grown retinal eye cells make successful connections, open door for clinical trials to treat blindness

Retinal cells grown from stem cells can reach out and connect with neighbors, according to a new study, completing a “handshake” that may show the cells are ready for trials in humans with degenerative eye disorders.Over a decade ago, researchers from the University of Wisconsin–Madison developed a way to grow organized clusters of cells, called organoids, that resemble the retina, the light-sensitive tissue at the back of the eye.

Brain-Like Organoids Grown in a Dish Provide Window into Autism

Whatever you do, don’t call them “mini-brains,” say University of Utah Health scientists. Regardless, the seed-sized organoids—which are grown in the lab from human cells—contained an array of neural and other cell types found in the cerebral cortex, the outermost layer of the brain involved in language, emotion, reasoning, and other high-level mental processes. They are providing insights into the brain and uncovering differences that may contribute to autism in some people.

WFIRM researchers create specific cancer organoid system to study bacterial effects on immunotherapy

Wake Forest Institute for Regenerative Medicine (WFIRM) researchers are using a tumor organoid system to examine the effects of metabolites secreted by bacteria on a specialized immunotherapy – immune checkpoint blockage, a promising cancer treatment development – to determine why some patients don’t respond or develop a resistance to the treatment over time.

Mount Sinai scientists discover early signs of frontotemporal dementia in personalized cerebral organoids

Frontotemporal dementias are a group of fatal and debilitating brain disorders for which there are no cures. In an article published July 26 in Cell, Mount Sinai researchers describe how they were able to recreate much of the damage seen in a widely studied form of the disease by growing special types of cerebral organoids in petri dishes.

Research News Tip Sheet: Story Ideas from Johns Hopkins Medicine

NEWS STORIES IN THIS ISSUE:
– Study Says Failure to Rid Amyloid Beta Protein from Brain May Lead to Alzheimer’s Disease
– Johns Hopkins Medicine Team Discovers Novel Mediator of Once Mysterious Chronic Itch – Study Suggests Molecular Changes in Tissue Microenvironment May Promote Colorectal Cancer
– Researchers ID Anti-Inflammatory Proteins as Therapy Targets for Nasal and Sinus Problem
– Johns Hopkins Children’s Center Receives NIH Award to Study Dangerous Pediatric Disease

Human Lung and Brain Organoids Respond Differently to SARS-CoV-2 Infection in Lab Tests

UC San Diego School of Medicine researchers are using stem cell-derived organoids to study how SARS-CoV-2 interacts with various organ systems. Their findings may help explain the wide variety in COVID-19 symptoms and aid the search for therapies.

Synthetic Biology and Machine Learning Speed the Creation of Lab-Grown Livers

Researchers at the University of Pittsburgh School of Medicine have combined synthetic biology with a machine learning algorithm to create human liver organoids with blood and bile handling systems. When implanted into mice with failing livers, the lab-grown replacement livers extended life.

Rutgers Cancer Institute Researchers Utilize 4D Printing with Patient Derived Organoids to Accelerate Treatment Testing for Common Brain Tumor

Rutgers Cancer Institute investigator shares about a new project in which 4-dimensional (4D) printing of arrays that transform from cell-culture inserts into histological cassettes are utilized and hold patient tissue samples for rapid programmable drug testing to accelerate treatment testing for glioblastoma multiforme (GBM), a common brain tumor.

Human Gut-in-a-Dish Model Helps Define ‘Leaky Gut,’ and Outline a Pathway to Treatment

UC San Diego researchers use 3D human gut organoids to reveal the molecular system that keeps intestinal linings sealed, demonstrate how the system breaks down and how it can be strengthened with the diabetes drug metformin.

Brain Organoids Reveal Glioblastoma Origins

Glioblastomas are the most aggressive form of brain cancer – they grow and spread rapidly through the brain and are virtually impossible to eradicate, typically leading to death within one or two years of diagnosis. Scientists are constantly seeking more powerful targeted therapies, but so far without success — in part because glioblastomas are challenging to study in a laboratory setting.