Research advances understanding of DNA repair

A researcher has made a discovery that alters our understanding of how the body’s DNA repair process works and may lead to new chemotherapy treatments for cancer and other disorders. Researchers discovered that base excision repair has a built-in mechanism to increase its effectiveness — it just needs to be captured at a very precise point in the cell life cycle.

Quelle: Sciencedaily

Migrating through small spaces makes cancer cells more aggressive

Squeezing through tight spaces makes cancer cells more aggressive and helps them evade cell death, shows a new study.

Quelle: Sciencedaily

Lower chance of pregnancy and childbirth after IVF with one ovary

Women who have had one ovary surgically removed (unilateral oophorectomy) are less likely to become pregnant after in vitro fertilization and give birth to fewer babies than women with both ovaries. That is according to an extensive meta-analysis.

Quelle: Sciencedaily

Single protein prompts mature brain cells to regenerate multiple cell types

A single protein can reverse the developmental clock on adult brain cells called astrocytes, morphing them into stem-like cells that produce neurons and other cell types, UT Southwestern researchers report in a new study. The findings might someday lead to a way to regenerate brain tissue after disease or injury.

Quelle: Sciencedaily

New risk algorithm would improve screening for prostate cancer

Researchers developed an algorithm estimating a person’s risk of developing prostate cancer based on age and the levels of two prostate cancer markers, PSA and hK2 (human kalliknein peptidase). They found that, by setting a risk threshold above which men are counted as ’screen positive‘, the approach would reduce the number of false positives by three quarters compared to a standard PSA test, while catching the same proportion of cancers.

Quelle: Sciencedaily

World Trade Center responders at higher risk for blood cancer-associated mutations, study finds

Scientists determined that 9/11 first responders to the World Trade Center have increased levels of mutations that escalate their risk for blood cancers or cardiovascular disease, according to a new study.

Quelle: Sciencedaily

Novel antiviral drug combinations demonstrate COVID-19 therapeutic potential

Researchers demonstrate that combinations of antiviral drugs inhibiting both polymerase and exonuclease reduce SARS-CoV-2 replication 10 times more than polymerase inhibitors alone.

Quelle: Sciencedaily

Novel treatment makes pancreatic cancer susceptible to immunotherapy, mouse study shows

A new study — in mice — suggests that blocking a major inflammatory pathway that is activated in pancreatic cancer makes the tumors sensitive to chemotherapy and a type of immunotherapy that prompts the immune system’s T cells to attack the cancer cells. The therapy more than doubled survival in a mouse model of pancreatic cancer.

Quelle: Sciencedaily

New discovery may help reduce side effects of multiple sclerosis drugs

Investigators have discovered how a drug for multiple sclerosis interacts with its targets, a finding that may pave the way for better treatments.

Quelle: Sciencedaily

Visualizing the invisible: New fluorescent DNA label reveals nanoscopic cancer features

Researchers have developed a new fluorescent label that gives a clearer picture of how DNA architecture is disrupted in cancer cells. The findings could improve cancer diagnoses for patients and classification of future cancer risk.

Quelle: Sciencedaily

Changing the standard of care for stage III melanoma surgery

For years, surgery for patients with stage III melanoma — melanoma that has spread to the lymph nodes — involved removing those lymph nodes along with the primary tumor. Known as completion lymph node dissection (CLND), the surgery was meant to ensure that no cancer remained after surgery. More recently, however, cancer surgeons have discovered that CLND has the potential to cause more problems than it solves. In most cases, patients do better on immunotherapy alone than they do when their surgery involves removal of the lymph nodes, due to potential complications from lymph node surgery.

Quelle: Sciencedaily

Taller adults may be at increased risk for colorectal cancer

A new meta-analysis, or data examination of several independent studies, adds to evidence that taller adults may be more likely than shorter ones to develop colorectal cancer or colon polyps that can later become malignant.

Quelle: Sciencedaily

‚Drug factory‘ implants eliminate ovarian, colorectal cancer in mice

Bioengineers have shown they can eradicate advanced-stage ovarian and colorectal cancer in mice in as little as six days with a treatment that could be ready for human clinical trials later this year.

Quelle: Sciencedaily

Virology: Equine hepatitis viruses and hepatitis C

As of today, there is no vaccine against hepatitis C. To improve the search for it, researchers are looking for a so-called surrogate model: an animal that can also suffer from viral hepatitis and whose course of infection allows conclusions about the behavior of the hepatitis C virus in humans. They found what they were looking for in the horse.

Quelle: Sciencedaily

Cerebrospinal fluid may be able to identify aggressive brain tumors in children

It may be possible to identify the presence of an aggressive brain tumor in children by studying their cerebrospinal fluid, according to new research.

Quelle: Sciencedaily

Why multiple myeloma returns

Multiple myeloma, the most common type of bone marrow cancer in Germany, almost always returns, even after initial treatment success. In the majority of cases, the reasons behind this treatment resistance (e.g., genetic mutations) and the subsequent return of the disease, remain unknown. According to new research, it is the increased production of a specific protein which diminishes the cancer’s sensitivity to treatment.

Quelle: Sciencedaily

Healthy gut microbiome improves success of cancer treatment

The largest study to date has confirmed the link between the gut microbiome and the response to cancer immunotherapy therapy for melanoma.

Quelle: Sciencedaily

Immunotherapy drug bolsters head and neck cancer treatment

A clinical trial has shown that the immunotherapy drug pembrolizumab increased survival rates for head and neck cancer patients with intermediate risk.

Quelle: Sciencedaily

Computer drug simulations offer warning about promising diabetes and cancer treatment

Using computer drug simulations, researchers have found that doctors need to be wary of prescribing a promising treatment for all types of cancer and patients.

Quelle: Sciencedaily

Key genomic alterations and potential therapeutic vulnerabilities in transformed cutaneous T-cell lymphoma

Researchers have shared a comprehensive multiomics study from a rare cohort of 56 patients with transformed CTCL and identified several genomic alterations and oncogenic programs that may be potential novel therapeutic targets.

Quelle: Sciencedaily

Cholesterol-lowering drugs may slow down metastases

Many people have to take statins to lower their cholesterol levels. But statins may be able to do even more: Researchers report that these drugs inhibit a gene that promotes cancer cell metastasis.

Quelle: Sciencedaily

Researcher urges caution on AI in mammography

Analyzing breast-cancer tumors with artificial intelligence has the potential to improve healthcare efficiency and outcomes, but doctors should proceed cautiously, according to a new editorial.

Quelle: Sciencedaily

Advancing our view at the subcellular level

Researchers have developed a new pH probe and imaging technique to provide researchers more information when studying diseases like cancer and Alzheimer’s.

Quelle: Sciencedaily

Immune cells forget (cell) culture shock

A recent study shows that certain immune cells can restore their normal functions when introduced back into the body, even after being multiplied in the laboratory to large numbers — the results pave the way to new cell therapies.

Quelle: Sciencedaily

Scientists uncover a new approach for treating aggressive cancer

Researchers have uncovered a new role of a chromatin-modulatory enzyme, termed EZH2, during cancer development. They then designed a new small-molecule, MS177, based on the proteolysis-targeting chimera (PROTAC) technology, that targets both EZH2 and cMyc and thus inhibits cancer growth.

Quelle: Sciencedaily