In theory, scientists could remove
immune cells from a patient, run them through the microfluidic device and expose them to a viral protein, and then put them back in the patient.
His laboratory has developed a number of techniques to study the molecular profiles of circulating and airway
immune cells from patients with asthma and other diseases, using fewer cells than was possible previously.
Staff at the clinic will take
these immune cells from a patient, have the cells specially engineered in a nearby Hutch cell - processing facility, and then re-infuse them to attack the patient's cancer.
Not exact matches
Consider: Last year alone, the FDA approved two treatments,
from Novartis and Gilead, that literally reengineer
patients»
immune T -
cells to target and destroy blood cancers.
The company is developing a T -
cell reprogramming technology designed to generate an anti-tumor response
from the
patient's own
immune system.
Speaking of Novartis — the company's experimental CTL019, which is expected to be the first approved drug in a revolutionary new cancer treatment space that turns the body's own
immune cells into cancer - killers, is already facing some apprehension
from doctors and
patient groups who are worried about its eventual pricing.
«But at some point we'll be able fabricate a biodevice
from a
patient's own
cells that will duplicate the most important functions of a kidney and that won't be rejected by the
patient's
immune system.»
This new kind of approach to fighting blood cancers is truly personalized;
immune T -
cells are extracted
from patients, genetically tinkered to home in on an destroy cancerous
cells, multiplied in a lab, and then jolted back into the
patient's body within about two weeks.
And using
cells from someone other than the cancer
patient being treated might trigger an
immune response against the foreign
cells.
The experiments point to an
immune system
cell that evades the toxic effects of cyclophosphamide and protects
patients from a lethal form of GVHD.
Based on these ex vivo experiments (in
cells isolated
from patients and then exposed to PD - L1 blocking agents outside of the body), they predict that when actual
patients are given PD - L1 blocking agents, their viral load at the time will influence the «net» outcome, i.e., whether the blockage boosts or weakens the overall anti-HIV
immune response.
Normally, this protein prevents
immune cells from attacking an
patient's own body.
The Boston
patients, in contrast, are free of the virus thanks to a combination of a bone marrow transplant plus continuing antiretroviral drugs to stop newly donated
immune cells from being infected.
HBI member V. Wee Yong, PhD and research associate Susobhan Sarkar, PhD, and their team including researchers
from the Department of Clinical Neurosciences and the university's Southern Alberta Cancer Research Institute, looked at human brain tumor samples and discovered that specialized
immune cells in brain tumor
patients are compromised.
«Cardiac stem
cells from heart disease
patients may be harmful: Researchers discover molecular pathway involved in toxic interaction between host
cells and
immune system.»
Lu's team will extract
immune cells called T
cells from the blood of the enrolled
patients, and then use CRISPR — Cas9 technology — which pairs a molecular guide able to identify specific genetic sequences on a chromosome with an enzyme that can snip the chromosome at that spot — to knock out a gene in the
cells.
The new findings build on prior research
from the Dhodapkar lab demonstrating that
patients with Gaucher disease, an inherited lipid storage disorder, have a significant increased risk for developing myeloma; and the discovery of a subset of lipid - reactive
immune cells, called type II NKT - TFH, that promote the development of plasma
cells.
«If you give
patients immune cells to eradicate any remaining cancer
cells that might be present,» he says, «those
immune cells would not be prevented
from doing their job by ongoing
immune suppression drugs that are being used in
patients treated with conventional transplant approaches.»
From a simple blood draw, the test reads the DNA of the
patient's
immune repertoire to find the
immune cell barcodes associated with the cancer.
Researchers are developing many different versions of CAR - T
cell therapies, but the basic premise is the same: Doctors remove a
patient's T
cells (
immune system
cells that attack invaders)
from a blood sample and genetically modify them to produce artificial proteins on their surfaces.
The
cells were derived
from eggs that had been injected with DNA
from the
patients, so they could eventually be transplanted back to replace or correct the
patient's diseased
cells without fear of
immune rejection.
The researchers then took naïve
immune cells — which transform into different types based on the invaders they encounter —
from the blood of healthy individuals and exposed them to bacteria in the guts of MS
patients.
Diabetes researchers are considering various replacements for insulin injections: Transplanting new pancreatic islet
cells that make insulin, coaxing the
patient's own islets to regenerate, or treating diabetics early in the disease with
immune - suppressing therapies to prevent their body
from destroying the rest of their pancreatic islets.
The personalized vaccine is made
from patients» own
immune cells, which are exposed in the laboratory to the contents of the
patients» tumor
cells, and then injected into the
patients to initiate a wider
immune response.
Next, the team exposed immature
immune cells from the blood of healthy people to the bacteria found in the guts of MS
patients.
«Compared to blood
from the same
patients, the inflamed joint
immune cells were much less sensitive to active vitamin D.
«We therefore investigated responses to the active form of vitamin D in
immune cells from the inflamed joints of
patients with rheumatoid arthritis.
«This appears to be because
immune cells from the joints of rheumatoid arthritis
patients are more committed to inflammation, and therefore less likely to change, even though they have all the machinery to respond to vitamin D.»
It has been understood for several years that, in
patients suffering
from this disease,
immune cells attack the aquaporin - 4 water channel of the brain
cells.
To manufacture CAR T
cells, scientists extract bone marrow
from a
patient, introduce genetic instructions for a CAR into the T
cells, and then infuse those engineered
immune cells back into the person's bloodstream.
Injected mRNAs normally would be cleared
from the body within minutes by a
patient's
immune system, but these mRNAs are modified so that they are ignored by the
immune system and can easily enter
cells.
Patients could benefit
from having their own
cells reprogrammed into ones that could help treat disease, potentially eliminating the prospect of
immune rejection.
Furthermore, they have found that neural stems
cells can be culled
from the
patient's bone marrow, thus circumventing ethical and political obstacles to neural stem
cell therapy as well as problems with
immune rejection that sometimes arise when researchers must employ embryonic stem
cell lines.
The researchers also analyzed specific
immune cells called cytotoxic T
cells isolated
from the
patients» blood and found increases in biomarkers indicative of
immune activation.
These vulnerable
patients, whose
immune defenses have taken a dramatic double hit
from both their original disease and the treatments required to repopulate their
immune system with donor
cells, are especially susceptible to a wide range of infections that typically don't cause major problems in healthy people.
Next, T
cells — the
immune system's foot soldiers — are harvested
from the
patient's blood and infected with the virus, which rewrites their genetic code to recognize and destroy cancer
cells.
This time, instead of using skin
cells, the team reprogrammed lymphocytes (
immune cells)
from six entirely new bipolar
patients, some of whom are known lithium responders.
He is pioneering a new treatment for autoimmune disorders, one in which
patients»
immune systems are suppressed and then replaced with an infusion of their own
immune stem
cells, filtered out
from their blood.
Monitoring
immune cell activity — including phenotyping
immune cell subsets, tracking
cell proliferation, and measuring cytokine production — can provide insights into the overall status of
immune function in
patients, particularly those undergoing immunosuppression after transplants, enduring cancer treatment, or suffering
from autoimmune disease or other pathologies that affect the
immune system.
Effector T
cells incite GvHD when they become overactive as the
patient's
immune system starts to rebuild itself
from the donor stem
cells.
Results
from a clinical trial investigating a new T
cell receptor (TCR) therapy that uses a person's own
immune system to recognize and destroy cancer
cells demonstrated a clinical response in 80 percent of multiple myeloma
patients with advanced disease after undergoing autologous stem
cell transplants (ASCT).
Instead, the vaccines use killed autologous tumor
cells from the
patient to activate the
immune system.
Transplanted embryonic stem
cells are ethically cleaner, but they have a genetic makeup different
from the
patient's own, so they could be violently rejected by the
immune system.
Recently, scientists have engineered
cells from a
patient's own
immune system to fight blood cancers.
A number of new clinical trials aim to take
cells from a
patient, such as blood
cells or
immune cells, edit them and transfer them back with new power to undermine diseases like cancer or sickle
cell anemia.
In
patients with severe asthma, however, NK
cells are disabled
from resolving inflammation, and become outnumbered by other types of
immune cells that provoke inflammation.
«Protection for the gut barrier: New approach may prevent graft - versus - host disease: Activating signal paths could protect
patients from dangerous
immune reactions after stem
cell transplantations.»
If CTL019 is approved, the Swiss pharmaceutical giant plans to dole it out
from about 30 preapproved sites, each trained in the multi-step process of harvesting
cells, handling the product, and treating
patients for the feverish and often life - threatening
immune response that usually accompanies CAR - T therapy.
The
immune activation
from the CAR
cells was also met with resistance mechanisms, including an upregulation of immunosuppressive pathways which may work against the
patient and for the tumor, the researchers found.
If some of those
cells could be removed
from a person with AIDS, genetically engineered to be resistant, and then returned to the
patient, they might spawn an
immune system that is completely resistant to the disease.