This poster describes the isolation and maintenance in culture of pluripotent stem cells, their differentiation, and the generation and potential
uses of organoids.
The use of organoids, tiny 3 - D spheres derived from a patient's own tumor, may be useful in the future to guide treatment of patients.
Professor Tony Burgess, head of Structural Biology at the Walter and Eliza Hall Institute, is jointly leading the bank and said
the use of organoids would be a step change from current drug testing techniques, which take eight months to yield results that are unreliable.
Not exact matches
It's «an important technical advance,» said neuroscientist Michal Stachowiak
of the State University
of New York, Buffalo, who created human cerebral
organoids to study schizophrenia, and «an important initial step toward
using organoids in regenerative medicine.»
Muotri's work is a nice demonstration
of the power
of mini-brains to help understand the early, cellular features
of neurological disorders, says Madeline Lancaster at the MRC Laboratory
of Molecular Biology in Cambridge, UK, who developed the
organoid - growing method Muotri
used.
«Until now,
use of traditional culture methods and even more sophisticated
organoid cultures have prevented the microbiome from being studied beyond one or two days.
Professor Burton and colleagues believe that
using the
organoids will allow them to investigate in greater detail how the conceptus communicates with the glands, identifying the full repertoire
of factors released in response and testing their effects on placental tissues.
Scientists can't yet grow spare parts
of the human brain to fix neurological injuries or defects, but they have recently
used stem cells to create brain
organoids, formations
of cells that mimic some
of the brain's regions.
Researchers modeled kidney development and injury in kidney
organoids (shown here), demonstrating that the
organoid culture system can be
used to study mechanisms
of human kidney development and toxicity.
The researchers
use a technique called «optical metabolic imaging» to measure the activity level
of the
organoids.
And by creating personalized
organoids from the reprogrammed cells
of patients, scientists could study disease in a very individualized way — or maybe even
use organoid structures to replace certain damaged tissues, such as in the liver or spinal cord.
Some scientists have distant dreams
of using organoid methods to grow full - size livers or kidneys in the lab for transplantation.
To turn these cellular LEGOs into arrays
of organoids that can be
used for research, Gartner's team lays down the cells in layers, with multiple sets
of cells designed to stick to particular partners.
A UCSF - led team has developed a technique to build tiny models
of human tissues, called
organoids, more precisely than ever before
using a process that turns human cells into a biological equivalent
of LEGO bricks.
To specify the 3 - D structure
of their
organoids, Gartner's team makes
use of a familiar molecule: DNA.
«This work provides a proof
of principle for
using stem cell - derived human intestinal
organoids in a therapeutic setting.»
«The
use of a mouse tumor - derived matrix would limit any future applications
of these
organoid technologies in humans, and this work opens the door to research directed specifically for clinical applications,» noted Asma Nusrat, study co-author and the Aldred Scott Warthin Professor and Director
of Experimental Pathology in the University
of Michigan's School
of Medicine.
Using a tiny colonoscope, Quirós and Cruz - Acuña delivered the hydrogel, along with the
organoids, into wounds that had been made in the intestines
of immune - compromised mice.
Beyond the intestinal applications, the researchers are also studying the
use of hydrogels to deliver
organoids to damaged kidneys and lungs.
The resulting
organoids could either be banked for future
use or immediately fragmented and seeded into the «epithelial» channels
of multiple Organ Chips where they were further matured by flowing specialized culture medium and applying mechanical stimulation to the channels to mimic physiological peristalsis - like motions.
«The 3D culture strategy
used in our study can potentially be applied to other lineage progenitors for efficient formation
of tissue
organoids,» says co-first author Jun Wu, Salk research associate.
Munera, study first author, pointed to a number
of new ways that human colon
organoids could be
used study disease.
Clevers and other scientists have developed
organoids of the gut, liver, lung, brain, and many other human organs that can be
used to model disease or to serve as test beds for drugs.
For example,
organoids grown from the guts
of individual cystic fibrosis patients are
used to predict their response to drugs.
Through the
use of stem cell - based
organoids researchers are making big strides in the study
of neurodevelopmental diseases such as schizophrenia and autism.
Brain
organoids, also known as mini-brains, are tiny clumps
of brain cells grown from stem cells that researchers are
using to investigate the neural underpinnings
of autism and other neurological disorders.
To read and download the publication, see Enhanced Utilization
of Induced Pluripotent Stem Cell — Derived Human Intestinal
Organoids Using Microengineered Chips
Thirdly, the current, almost universal dependency
of organoid culture on the
use of Matrigel as a replacement for the function
of the extracellular basement matrix in providing structural support and survival signals to the epithelial cells hampers clinical application, considering its origin from a mouse sarcoma cell line, its poorly defined composition and its mechanical rigidity after plating.
The work takes a step toward
using brain
organoids to study complexities
of human brain development and disease that can't be investigated with current techniques.
The second
used brain
organoids, which are often referred to as miniature brains growing in petri dishes, but are actually just bundles
of human tissue that have some features
of the early human brain in the first trimester.
To better understand this complex tissues and its functions — and the diseases that affect it — a multicenter team led by researchers at the Broad Institute
of MIT and Harvard and Massachusetts General Hospital has released a census
of the cells that make up the lining
of the small intestine,
using gene expression profiles
of more than 53,000 individual cells from the mouse gut or gut
organoid models.
The past few years has seen an explosion in the number
of studies
using organoids — so - called «mini organs».
Secondly, before considering the
use of iPSC - derived
organoids for transplantation / regenerative medicine in human patients, the current protocols for expansion, reprogramming and differentiation
of iPSCs in long - term cultures need further improvement to minimize the risk
of oncogenic cellular mutations and teratoma, or tumor formation, in the patient.
We
use 3D stem cell («
organoid») cultures from mice and humans to examine occurrence, level and molecular causes
of CIN in cancer (Video 2).
The course will
use cultures from the Living Biobank at The HUB, which include
organoids from patients with cystic fibrosis and various forms
of cancer.
In the long run, scientists hope to
use organoids and induced pluripotent stem cells to engineer tissue replacements in patients suffering from diseases that currently are treated with direct transplants
of fetal tissue.
Using organoids, scientists are testing cancer drugs, determining the effects
of toxins, and studying the development
of neurological diseases.
The team
used pancreatic
organoid technology developed in the lab
of Professor David Tuveson, Director
of CSHL's Cancer Center and Director
of Research for the Lustgarten Foundation.
ANN ARBOR, Mich — By combining engineered polymeric materials known as hydrogels with complex intestinal tissue known as
organoids — made from human pluripotent stem cells — researchers have taken an important step toward creating a new technology for controlling the growth
of these
organoids and
using them for treating wounds in the gut that can be caused by disorders such as inflammatory bowel disease (IBD).
This symposium will bring together researchers from different fields to enhance our understanding
of how
organoids can be formed and maintained, how they can be
used to study disease and how we might eventually
use them to regenerate and replace human organ tissue.
51) Drost, J., van Boxtel, R., Blokzijl, F., Mizutani, T., Sasaki, N., Sasselli, V., de Ligt, J., Behjati, S., Grolleman, J.E., van Wezel, T., Nik - Zainal, S., Kuiper, R.P., Cuppen, E., and Clevers, H.
Use of CRISPR - modified human stem cell
organoids to study the origin
of mutational signatures in cancer.
This experimental proof that the Zika virus caused microcephaly came quite rapidly, and other teams working with Zika have continued to
use organoids to test therapeutic interventions and to probe why only some strains
of the virus appear to result in the condition.
«We kept them healthy, and without giving them many instructions on what kind
of cells they should become they produced many
of the cells present in the human brain and achieved the formation
of complex tissue,» says Arlotta, describing the brain
organoids she
used in research published in Nature in May 2017.
«
Use of CRISPR - modified stem cell
organoids to study the origin
of mutational signatures in cancer»
These
organoids can be
used to test drugs to determine whether patients are likely to respond, thus eliminating the potential cost and risk
of testing drugs on patients themselves.
SEngine Precision Medicine, instead, is pursuing an innovative approach for the development
of novel targets and drugs for cancer therapy by
using primary patient
organoids initially derived for our diagnostic assay.
In a recent review article in Nature, Dr. Pasca unpacked the current state
of brain
organoid research — addressing how they are
used, their benefits, and their challenges.
A complex extracellular matrix is
used for the maturation
of CLCs; therefore, experience in hPSC culture and 3D
organoid systems may be necessary for optimal results.
Within the scope
of personalized medicine, this technology presents immense possibilities for testing patient - derived multicellular tumour spheroids /
organoids (comprising cancer cells, stromal cells, cancer stem cells and / or immune cells) for disease / biomarker - oriented drug activity and profiling
using single - and pair-wise standard / targeted drug combinations.