Lifeboat Foundation: Safeguarding Humanity
Toggle light / dark theme

Blog

Category: biotech/medical

Reprogramming regulatory T cells could help immunotherapy work in pancreatic cancer

Researchers at Oregon Health & Science University have uncovered a key reason why immunotherapy has largely failed in pancreatic cancer—and identified a promising strategy to overcome that resistance. The study, published in the journal Immunity, shows that pancreatic tumors actively reshape their immune environment by co-opting regulatory immune cells that normally shut down tumor-killing cells. By reprogramming those cells, the research reveals a potential pathway to make immunotherapy effective against one of the deadliest and most treatment-resistant cancers.

“Pancreatic cancer is incredibly resistant to most therapies,” said the study’s senior author, Katelyn Byrne, Ph.D., assistant professor of cell, developmental and cancer biology in the OHSU School of Medicine and member of the OHSU Brenden-Colson Center for Pancreatic Care. “Even when we know the immune system is capable of long-lasting protection, it’s been very difficult to get that response to work in this disease.”

Immune checkpoint inhibitors and other immunotherapies have transformed care for cancers such as melanoma and lung cancer, but they have shown little benefit for pancreatic cancer. One major reason, Byrne said, is the presence of large numbers of regulatory T cells, or Tregs, inside pancreatic tumors.

Polyunsaturated lipids kill senescent cells by ferroptosis

In a recent Cell Press Blue paper, Zhang et al. identify two polyunsaturated lipids that selectively eliminate senescent cells by inducing ferroptosis, uncovering this iron-dependent cell death pathway as a vulnerability for senescent cells. Their findings position ferroptosis induction as a promising strategy for targeting senescence and aging-associated diseases.

Scientists Discover Dual Treatment for Lung Cancer and Muscle Wasting

Researchers at Oregon State University have pioneered a transformative approach for simultaneously targeting lung cancer and the debilitating muscle-wasting syndrome known as cachexia—a condition that plagues many lung cancer patients. Their groundbreaking work employs lipid nanoparticles (LNPs) as a delivery vehicle for messenger RNA (mRNA) therapeutics, addressing critical challenges in precision drug delivery for aggressive tumors deep within the lung tissue.

Lipid nanoparticles, microscopic carriers composed of fatty compounds like lipids, have revolutionized drug delivery with their ability to ferry genetic material directly into cells. In this study, the OSU team engineered LNPs comprised of DC-cholesterol and a specialized ionizable lipid, 113-O12B, which exhibited a remarkable ability to bind a blood serum protein called vitronectin. This binding triggers the formation of a protein corona on the nanoparticles, a dynamic interface that actively guides the LNPs to lung tissue, and more importantly, lung tumor microenvironments.

Vitronectin’s recruitment is no coincidence. It interacts with integrin receptors—cellular docking proteins highly expressed on lung cancer cells. These integrins act as biological gateways, facilitating enhanced uptake of the therapeutic nanoparticles by tumor cells while sparing healthy tissue. This receptor-mediated targeting marks a significant advance over conventional LNPs, which commonly accumulate in the liver, limiting their therapeutic index against lung malignancies.

Mitochondria-Derived Vesicles and Mitochondrial Extracellular Vesicles in Health and Cardiovascular Disease

@CircRes Compendium on Migration of Mitochondria Beyond Cell Boundary.

Authored by Drs. Rapushi & colleagues.

Mitochondria-derived vesicles (MDVs) and mitochondrial extracellular vesicles (mitoEVs) represent 2 related extensions of mitochondrial dynamics that link organelle maintenance to communication within and between cells. MDVs are small vesicles that bud directly from mitochondria, selectively packaging components of the outer membrane, inner membrane, or matrix. They serve as a localized quality control mechanism that removes oxidized or damaged material without engaging the entire mitophagic machinery. After budding, MDVs typically enter the endolysosomal pathway, where they can fuse with late endosomes or lysosomes for cargo degradation. A subset of MDVs also targets other organelles, particularly peroxisomes, contributing to organelle crosstalk, lipid metabolism, and redox balance.

CD19 CAR-T therapy induces remission in refractory autoimmune hemolytic anemia with ITP and antiphospholipid syndrome

Cutting edge CAR-T cell therapy drives remission of three life-threatening autoimmune diseases in patient.

Med by Cell Press.

This single-patient case report expands the indications in which CD19 CAR-T cell therapy demonstrates unprecedented clinical efficacy, achieving sustained, treatment-free remission. Following B cell abrogation, AIHA is stopped, antiphospholipid antibodies are abrogated, and an underlying ITP is stabilized without any CAR-typical side effects.

10 Enhanced Super-human Types in Frank Herbert’s Dune

Frank Herbert’s Dune saga which has six books in its expanse is no doubt one of the most popular and most influential books in Science fiction. Dune is really about how putting all your hope into a hero or a “chosen one” and then to a set of beliefs can go awry wrong in a big terrifying way. The story shows how easily large groups of people can be influenced by ideas, especially when religion and politics get mixed together, it shows the great game of power on a galactic scale. It showcases how humanity would evolve and transform in the future, some which are familiar while others totally alien in appearance. Then the overall idea of a long “Golden Path” that is meant to ensure the survival of humanity becomes the overarching theme of the saga and along the way, different human types emerge in the storyline, some enhanced by genetic engineering, others by cloning and selective breeding. So, here in this video we will take a look at 10 of these enhanced or superhuman types in the canon Dune works.

FAIR-USE COPYRIGHT DISCLAIMER Copyright Disclaimer under Section 107 of the Copyright Act 1976, allowance is made for \.

New acute myeloid leukemia “don’t eat me” signal discovered!

Macrophages, much like Alice of “Alice in Wonderland,” recognize and consume tumor cells that display “eat me” surface markers. However, tumor cells can evade detection by macrophages if they successfully present “don’t eat me” signals.

The team conducted a genome-scale loss of function screen in AML cell lines, systematically turning off individual genes and cataloging those that affected detection by macrophages.

Surprisingly, the classic CD47 “don’t eat me” signal had only a weak effect. Instead, the researchers found that another signal—CD43—had a much stronger influence on macrophage detection.

The inhibitory activity of CD43 was dependent on its sialic acid residues and the length of its ectodomain but independent of the canonical sialic acid–binding receptors SIGLEC-1, SIGLEC-7, and SIGLEC-9.

Inactivation of CD43 function restored the ability of macrophages to phagocytize AML. ScienceMission sciencenewshighlights.

One DNA letter can trigger complete sex reversal

Researchers at Bar-Ilan University have discovered that changing just one letter in DNA can completely alter sex development in mice. In the new study, published in Nature Communications, a single-letter insertion in a non-coding regulatory region caused XX mice, which would normally develop as females, to develop instead as males with testis and male genitalia.

The finding is especially striking because the mutation was not made in a gene itself, but in a distant stretch of DNA that helps control a key developmental gene. The study highlights the major role of the non-coding genome —the 98% of DNA that does not make proteins but helps regulate when and how genes are turned on and off.

“This is a remarkable finding because such a tiny change—just one DNA letter out of approximately 2.8 billion—was enough to produce a dramatic developmental outcome,” said Dr. Nitzan Gonen, from the Goodman Faculty of Life Sciences and Institute of Nanotechnology and Advanced Materials at Bar-Ilan University. “It shows that non-coding DNA can have a profound effect on development and disease.”

Enucleated cells with Nectin-1 overexpression capture HSV-1 and promote viral elimination for herpes simplex encephalitis therapy

Zhou et al. describe an antiviral strategy for herpes simplex encephalitis that employs enucleated MSCs overexpressing Nectin-1 as decoys. This strategy effectively sequesters the virus and prevents its intracellular replication. Ultimately, they undergo programmed apoptosis, thereby facilitating macrophage-mediated clearance. This strategy offers a therapeutic approach for refractory viral infections.

/* */