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Archive for the ‘biotech/medical’ category: Page 601

Jun 4, 2023

PD-1 and PD-L1 Checkpoint Signaling Inhibition for Cancer Immunotherapy: Mechanism, Combinations, and Clinical Outcome

Posted by in categories: biotech/medical, evolution

Year 2017 PD-1 can eventually be used throughout the body to be used on all cancers which also naturally occurs in the body the common cancer drug Keytruda uses this type of targeting to destroy cancer cells.


Several cancers are highly refractory to conventional chemotherapy. The survival of tumors in several cases is assisted by checkpoint immunomodulation to maintain the imbalance between immune surveillance and cancer cell proliferation. Check point antibody inhibitors, such as anti-PD-1/PD-L1, are a novel class of inhibitors that function as a tumor suppressing factor via modulation of immune cell-tumor cell interaction. These checkpoint blockers are rapidly becoming a highly promising cancer therapeutic approach that yields remarkable antitumor responses with limited side effects. In recent times, more than four check point antibody inhibitors have been commercialized for targeting PD-1, PDL-1, and CTLA-4. Despite the huge success and efficacy of the anti-PD therapy response, it is limited to specific types of cancers, which attributes to the insufficient and heterogeneous expression of PD-1 in the tumor microenvironment. Herein, we review the current landscape of the PD-1/PD-L1 mechanistic role in tumor immune evasion and therapeutic outcome for cancer treatment. We also review the current progress in clinical trials, combination of drug therapy with immunotherapy, safety, and future of check point inhibitors for multiple types of cancer.

Immunotherapy is an exciting approach, and tremendous strides have recently been made in our perception of the role of the host immune response in affecting tumor growth and response to various therapies (Pardoll, 2012). Through these advances, novel immune check point inhibitors have been identified and cleared for use in the clinic (Figure 1). The evolution of immune checkpoint inhibitors as anticancer treatment options represents one of the most successful approach in cancer drug discovery in the past few years (Couzin-Frankel, 2013). Indeed, immune checkpoint inhibitors have emerged as a frontline treatment for multiple cancers, such as metastatic melanoma, non-small cell lung cancer (NSCLC), renal cell carcinoma (RCCs), and bladder or urothelial cancer. They are presently being assessed in numerous other cancer types, including breast cancer, head and neck cancer, and some advanced solid and hematological malignancies.

Jun 4, 2023

Five New Farming Technologies Tackle Climate-Change Threats

Posted by in categories: biotech/medical, food

Innovative ideas and devices are on the rise as heavier rainfall, harsher winters and disease-causing pests pose risks for agriculture.

Jun 4, 2023

New drug effective at preventing growth of lower-grade brain tumors, clinical trial finds

Posted by in categories: biotech/medical, neuroscience

A new drug that is in a phase 3 clinical trial has proven effective at preventing the growth of lower-grade brain tumors, with doctors saying nearly half of the patients in the trial haven’t needed chemotherapy or radiation years later. NBC News’ Lindsey Reiser has the details on the treatment.

Jun 4, 2023

Identifying the cause of mysterious heart disease in women

Posted by in category: biotech/medical

Prof. Kovacic said, “SCAD is still a relatively little-known disease, but it has a huge impact and is behind a quarter of all heart attacks in women under 50. We urgently need to learn more about this disease and discover what is causing it.”

He added, “This disease can not only be life-threatening, but it can reoccur without warning in some patients.”

The researchers are the first outside of the United States to join the iSCAD Registry, a global collaboration of researchers and patients studying the characteristics and pathogenesis of SCAD.

Jun 4, 2023

New chemistries for DNA sequencing

Posted by in category: biotech/medical

Binding reagents may lower error rate compared to sequencing by synthesis by.

Laurel Oldach

Jun 4, 2023

Treatment Breakthrough for an Intractable Brain Cancer

Posted by in categories: biotech/medical, neuroscience

Servier’s drug vorasidenib helped glioma patients stave off cancer growth.

Jun 4, 2023

Scientists Hacked Human Cells to Make Insulin, And It Reversed Diabetes in Mice

Posted by in categories: biotech/medical, cybercrime/malcode

Scientists have repurposed human stomach cells into tissues that release insulin in response to rising blood sugar levels in a breakthrough that promises an effective way to manage conditions such as type 1 diabetes.

The experiment, led by researchers from Weill Cornell Medicine in the US, revealed transplants of gastric insulin-secreting (GINS) cells reversed diabetes in mice.

Pancreatic beta cells normally do the job of releasing the hormone insulin in response to elevated sugar levels in the blood. In people with diabetes, these tissues are damaged or die off, compromising their ability to move glucose into cells for fuel.

Jun 4, 2023

Study sheds light on metabolic enzymes and processes essential for DNA damage repair

Posted by in category: biotech/medical

In crisis, the nucleus calls antioxidant enzymes to the rescue. The nucleus being metabolically active is a profound paradigm shift with implications for cancer research.

Jun 4, 2023

Scientists are closer to understanding how much meditation training is needed to improve brain–computer interface performance

Posted by in categories: biotech/medical, computing, health, neuroscience

Mindfulness-based awareness training can help people learn to better control brain-computer interfaces. But a new study has found that a single guided mindfulness meditation exercise isn’t enough to boost performance. The findings, published in Frontiers in Human Neuroscience, suggest that a longer period of meditation is needed in order for people to experience observable improvements.

The authors of the research are interested in exploring the potential benefits of using mindfulness meditation as a training tool to improve the performance of brain-computer interfaces, which allow individuals to control machines or computers directly from their brain, bypassing the traditional neuromuscular pathway. These devices have the potential to greatly benefit people with conditions such as spinal cord injuries, stroke, and neurodegenerative diseases like amyotrophic lateral sclerosis (ALS).

Previous studies have shown that one of the most effective signals for brain-computer interface control is the sensorimotor rhythm produced in the primary sensorimotor areas during motor imagery. However, not everyone is able to effectively control brain-computer interfaces, with approximately 20% of the population being “BCI-inefficient” even with extensive training. Therefore, researchers are looking for ways to improve performance, and one potential method is through meditation.

Jun 4, 2023

Resveratrol Extends Lifespan, But Only Under Two Experimental Conditions

Posted by in categories: biotech/medical, genetics, life extension

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