Inside every stressed cell, a quiet emergency response unfolds. When oxygen runs low, toxins accumulate, or nutrients grow scarce, mammalian cells assemble temporary structures known as stress granules, non-membranous aggregates of proteins and RNA that condense in the cytoplasm. In healthy tissue, these assemblies act as a protective pause button, halting protein production so the cell can weather the storm and resume normal function once conditions improve. But a new study suggests that in oral squamous cell carcinoma, one of the most common and disfiguring malignancies of the head and neck, this ancient survival machinery may be hijacked to serve a darker purpose: helping tumors grow and spread.

The research, conducted by a team at Kangwon National University in South Korea and published in Cell Death Discovery, examined how stress granule formation influences tumor progression and metastasis in oral squamous cell carcinoma, or OSCC. The findings point to a specific molecular switch, the phosphorylation of a protein called eIF2α, as a central driver of the process. When that switch is suppressed, the study reports, stress granule formation drops, and with it the growth and metastatic burden of tumors in mouse models. The work adds oral cancer to a growing list of malignancies in which the integrated stress response appears to fuel, rather than restrain, disease.

To understand why this matters, it helps to consider what stress granules actually do. Under stress, cells activate kinases that phosphorylate eIF2α, the alpha subunit of a translation initiation factor. Phosphorylated eIF2α dampens global protein synthesis, and the messenger RNAs that would otherwise be translated are instead sequestered, along with RNA-binding proteins, into dense cytoplasmic droplets. Key markers of these structures include G3BP1, TIAR, and PABP, proteins that researchers use to identify stress granules under the microscope. In normal cells, this translational arrest conserves energy and prevents the accumulation of damaged or misfolded proteins. The system is meant to be reversible: when the stress passes, the granules dissolve and translation restarts.

Cancer cells, however, live in a state of chronic stress. Tumors outgrow their blood supply, creating regions of hypoxia, low oxygen tension that would kill most normal cells. They also face nutrient deprivation, acidic microenvironments, and assault from chemotherapy and radiation. In this context, the stress response can become a liability for the patient rather than a safeguard for the cell. Previous work in other cancers has implicated stress granules in tumor progression and metastasis, partly through their interactions with key signaling pathways, but their role in oral squamous cell carcinoma had remained poorly understood, despite growing scientific interest in the topic.

The Korean team began by comparing human tumor tissue with adjacent normal tissue. They found that markers of stress granules, including G3BP1, eIF2α, TIAR, and PABP, were significantly overexpressed in OSCC tissues compared with their normal counterparts. This observation established that the stress granule machinery is not merely present in oral cancer but is amplified, suggesting that tumor cells may rely on it more heavily than the healthy cells around them. Overexpression of these markers alone does not prove causation, but it set the stage for the functional experiments that followed.

Those experiments turned to mouse models built from OSCC cells that had been preconditioned with hypoxia, deliberately exposing the cells to low oxygen before implantation. The logic was to mimic the stressful conditions tumor cells encounter in a real growing tumor and to ask whether cells that had already mounted a stress response behaved differently afterward. In parallel, the researchers used a compound called ISRIB, an inhibitor of the integrated stress response that acts downstream of eIF2α phosphorylation, in mice subjected to sodium arsenite-induced stress. Sodium arsenite is a classic laboratory trigger of oxidative stress and a reliable inducer of stress granule formation, making it a useful tool for probing the pathway.

The results were striking. In both experimental settings, suppression of eIF2α phosphorylation was associated with reduced stress granule formation, reduced tumor growth, and a reduced metastatic burden. In other words, when the researchers blocked the molecular event that nucleates stress granules, the tumors not only grew more slowly but also spread less aggressively. Conversely, the study found that stress granule formation was elevated during hypoxia-induced stress, underscoring a stress-responsive regulatory mechanism in which the harsh conditions of the tumor microenvironment actively promote the assembly of these granules. Together, the data sketch a coherent chain of causation: hypoxia and other stresses trigger eIF2α phosphorylation, phosphorylation drives stress granule assembly, and the granules support the cellular programs that allow OSCC cells to proliferate and colonize distant sites.

Why would a structure designed to protect cells become an engine of metastasis? The authors and other researchers in the field point to the selective nature of stress granules. While global translation is arrested, certain messenger RNAs are preferentially stored within the granules and protected from degradation. Among the transcripts sheltered this way are often those encoding proteins that promote survival, invasion, and epithelial-to-mesenchymal transition, the process by which stationary epithelial cancer cells acquire the motility needed to invade surrounding tissue and enter the bloodstream. By acting as temporary warehouses for pro-metastatic messages, stress granules may allow tumor cells to stockpile the tools of aggression, releasing them for translation once the acute stress subsides. In this view, the granule is not merely a damage-control structure but a staging ground for the next phase of tumor progression.

The therapeutic implications are considerable. Oral squamous cell carcinoma is frequently diagnosed at advanced stages, and metastasis to cervical lymph nodes is one of the strongest predictors of poor outcome. Existing treatments, surgery, radiation, and chemotherapy, remain limited in their ability to control disseminated disease. If stress granule formation genuinely drives metastatic behavior, then the pathway offers a new target. ISRIB, the compound used in the mouse experiments, has attracted attention in recent years for its ability to blunt the integrated stress response, and the new findings suggest that agents with a similar mechanism could be explored as anti-metastatic therapies in oral cancer. The authors conclude that stress granules promote OSCC progression via eIF2α phosphorylation and might serve as a novel therapeutic target, a formulation that is deliberately cautious but clinically suggestive.

As with any preclinical study, important caveats apply. The evidence comes from human tissue comparisons and mouse models, and translating these findings into patients will require further work to confirm that the same mechanism operates in human tumors in real time, to identify which patient subsets have the highest stress granule activity, and to develop inhibitors with acceptable safety profiles. Suppressing a fundamental cellular stress pathway carries risks, since normal tissues also rely on the integrated stress response during injury and inflammation. Still, the study fills a genuine gap in the literature by connecting a well-characterized cellular stress mechanism to one of the most clinically feared behaviors of oral cancer. It also adds to a broader shift in cancer biology: the recognition that tumors are not just collections of mutated genes but ecosystems shaped by physical and chemical stress, and that the survival programs cells use to endure hardship can be turned against the organism that hosts them. For patients with oral squamous cell carcinoma, whose disease too often spreads before it can be stopped, the humble stress granule may prove to be an unexpected and consequential adversary.

Subject of Research: The role of stress-induced eIF2α phosphorylation and stress granule formation in promoting metastasis of oral squamous cell carcinoma

Article Title: Stress-induced eIF2α phosphorylation promotes tumor metastasis in oral squamous cell carcinoma

Article References: Kim, S., Park, S., Lee, Y., Park, G., & Choi, J. (2026). Stress-induced eIF2α phosphorylation promotes tumor metastasis in oral squamous cell carcinoma. Cell Death Discovery. https://doi.org/10.1038/s41420-026-03412-4

Image Credits: AI Generated

DOI: 10.1038/s41420-026-03412-4

Keywords: stress granules, eIF2α phosphorylation, oral squamous cell carcinoma, metastasis, integrated stress response, ISRIB, hypoxia, G3BP1, tumor progression, translational arrest, cancer biology, therapeutic target

Tenzing shifts one of mountaineering’s most famous stories toward the Himalayan climber whose name has long shared a place in history with Edmund Hillary. Apple Original Films has released the trailer for the upcoming adventure drama, with Genden Phuntsok playing Tenzing Norgay and Tom Hiddleston portraying Hillary during the 1953 expedition that reached the summit of Mount Everest.

Directed by Jennifer Peedom, the film reaches select theaters on October 9 before streaming globally on Apple TV on October 16. The cast also includes Willem Dafoe, Caitríona Balfe, Thinley Lhamo, and Tenzin Dalha.

Rather than presenting the expedition simply as a survival story about reaching the world’s highest point, the film approaches the ascent through Tenzing’s position within the British-led team, his relationship with the mountain, and the social divisions surrounding the expedition.

That perspective gives the familiar Everest story a different dramatic center.

Tenzing puts the Himalayan climber at the front of the story

Tenzing Norgay and Edmund Hillary reached the summit of Everest on May 29, 1953, during an expedition led by Colonel John Hunt. Their ascent became one of the defining achievements in mountaineering history, but the new film is explicitly structured around Tenzing rather than treating the two climbers as interchangeable figures.

Phuntsok plays Tenzing as an experienced Himalayan climber who has already spent years pursuing the possibility of reaching the summit. The story follows his attempt to secure a meaningful place on the climbing team instead of being viewed primarily as someone there to support Western expedition members.

Hiddleston’s Hillary enters that story as another outsider within the expedition hierarchy. Apple describes the relationship between the two men as one built gradually through mutual respect and trust as the dangers and pressures of the ascent increase.

Dafoe plays Hunt, the expedition leader, while Balfe portrays expedition secretary Jill Henderson, who becomes an ally to Tenzing. Thinley Lhamo plays Dawa, Tenzing’s wife, whose support forms another part of the film’s emotional foundation.

The Apple TV listing also identifies Johnny Flynn as George Mallory and Tenzin Dalha as a younger Tenzing.

The 125-minute film therefore has room to explore more than the final climb itself. Its central conflict begins before Tenzing and Hillary ever approach the summit.

The Everest story looks beyond conquest

One of the distinctions emphasized in Apple’s description of Tenzing is the different meaning the mountain holds for its characters.

The film contrasts the Western climbers’ view of Everest as something to be conquered with Tenzing’s reverence for Chomolungma as the sacred mother goddess.

That contrast gives director Jennifer Peedom a way to examine the expedition through competing cultural perspectives rather than framing the mountain solely as an obstacle.

The trailer also points toward tensions involving class, hierarchy, nationality, and the legacy of empire. Tenzing must establish that he belongs among the expedition’s climbers instead of accepting a supporting position defined by others.

Historical accounts from the Royal Geographical Society record that Hillary and Tenzing left their final camp on the morning of May 29, 1953, using supplemental oxygen. They reached the summit at approximately 11:30 a.m. after negotiating the steep section of rock and ice that became known as the Hillary Step.

The achievement has been recounted in books, documentaries, photographs, and films for decades. Tenzing approaches the material by asking how the same expedition looks when the Himalayan climber occupies the center of the frame.

Peedom shares story credit with Luke Davies, who wrote the screenplay.

The project is a natural fit for Peedom, whose filmmaking career has repeatedly engaged with mountains, extreme environments, and the people drawn to them. Here, however, the physical scale of Everest serves a character story built as much around identity and recognition as technical climbing.

Genden Phuntsok leads an established ensemble

Casting Tenzing Norgay was particularly consequential because the film surrounds its lead with several internationally recognizable performers.

Hiddleston arrives as Hillary with a career spanning major franchise work and dramatic television. Dafoe brings a more imposing presence to Hunt, while Balfe plays Henderson as one of the figures willing to challenge the assumptions surrounding Tenzing’s role.

Phuntsok nevertheless remains the narrative anchor.

Apple’s synopsis describes the climber’s journey as both a lifelong ambition and a spiritual calling. That gives the performance two demands: convincing audiences of Tenzing’s physical capability at extreme altitude while conveying why reaching Chomolungma carries meaning beyond becoming part of the first confirmed ascent of Everest.

Lhamo’s Dawa is also positioned as more than background to the expedition. Apple specifically identifies her encouragement as part of what drives Tenzing toward the opportunity, adding a personal relationship to a story otherwise dominated by expedition politics and physical risk.

Behind the camera, Davies joins Peedom as a producer. Desray Armstrong also produces, alongside Liz Watts, Iain Canning, and Emile Sherman of See-Saw Films.

See-Saw has an established relationship with Davies, whose previous screenwriting credits for the company include Lion. Norbu Tenzing, Simon Gillis, and David Michôd serve as executive producers.

Tenzing gets a theatrical window before Apple TV

Apple is giving Tenzing a short theatrical run before bringing the film to its streaming service.

Select theaters will begin showing the movie on October 9, with the global Apple TV premiere following one week later on October 16. The Apple TV listing categorizes the film as a drama and adventure title and gives it a PG rating in the U.S. for thematic elements, language, smoking, and some peril.

The release continues Apple Original Films’ practice of using theatrical distribution selectively before making features available to subscribers.

For Tenzing, the cinema component has an obvious creative advantage. A film built around Everest, dangerous climbing conditions, and the physical scale of the Himalayas has material suited to a large screen, even as its narrative emphasis remains on the people inside that landscape.

The trailer arrives with less than a month remaining before the theatrical debut, giving Apple a relatively concentrated promotional window.

It also introduces Phuntsok to a much wider international audience alongside performers including Hiddleston, Dafoe, and Balfe without letting the better-known names displace the person identified in the title.

Tenzing will begin its theatrical run on October 9, followed by its Apple TV release on October 16. Its 1953 destination is already known; the new question is how the film reconstructs the journey by placing Tenzing Norgay’s perspective, relationships, and understanding of Chomolungma at the center of the ascent.

The post Tenzing trailer reframes the historic first ascent of Mount Everest appeared first on AppleMagazine.

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El Soplao, a fossil site tucked into the hills of Cantabria in northern Spain, stands out for yielding amber pieces with a blue-violet hue and abundant bioinclusions, according to a new review paper.

The post Spanish Amber Deposit Offers Rare Window into Cretaceous Life appeared first on Sci.News: Breaking Science News.

A fabricante de barcos de lazer MasterCraft Boat Holdings anunciou ontem que está levando a compatibilidade com o CarPlay a alguns de seus barcos pontão (pontoon boats) em parceria com o app Savvy Navvy.

Um pedido antigo de clientes da fabricante, o sistema de infoentretenimento da Apple, bem como o Android Auto, serão implementados por padrão em modelos 2027 (ou mais recentes) das marcas Crest e Balise, que contarão com vários dos mesmos recursos disponíveis em carros.

A parceria com o Savvy Navvy, no entanto, permitirá que usuários confiram também informações como cartas náuticas, rastreamento por GPS ¹Global positioning system, ou sistema de posicionamento global., rotas inteligentes, previsões meteorológicas em tempo real e dados de marés, muitas das quais ainda não estão disponíveis no app Mapas (Maps), da Apple.

Quem adquirir um barco elegível das linhas Balise, Crest Conquest ou Caribbean ganhará ainda acesso a todos os recursos do Savvy Navvy Premium, versão mais completa do serviço de navegação, sem custo extra.

Ainda segundo a MasterCraft Boat Holdings, os primeiros modelos compatíveis com o CarPlay serão lançados já no próximo mês. O Savvy Navvy, por sua vez, está disponível para download na App Store.

via MacRumors

Notas de rodapé

• 1
  Global positioning system, ou sistema de posicionamento global.

Beneath the seemingly unbroken canopy of the southwestern Amazon rainforest lies evidence of one of the largest monumental landscapes ever discovered in the ancient Americas.

According to new research published in Nature, what archaeologists once believed were scattered ceremonial sites are instead part of an enormous precolonial civilization that may have changed vast stretches of the Amazon nearly 2,000 years ago.

Using airborne LiDAR capable of penetrating forest cover, an international team of researchers says they have identified hundreds of previously unknown earthworks, estimating that more than 20,000, and perhaps as many as 30,000, remain spread across southwestern Amazonia.

The findings dramatically expand the known scale of the so-called Aquiry civilization and suggest that millions may have inhabited the region during its peak nearly 2,000 years ago, forcing a reconsideration of how densely populated and intensively managed the ancient Amazon may have been.

“We also propose that the total human population of the area in 100–300 AD was 1.25–3 million people,” researchers write. “If similar results are found elsewhere in Amazonia, the total precolonial population density and its effect on the current Amazonian soil and forest structure, biodiversity, and even some modeling of the global climate should be re-evaluated.”

The study represents one of the most ambitious archaeological surveys ever conducted in the Amazon. Researchers flew more than 2,700 miles across the forests of Brazil’s Acre and Amazonas states using airborne LiDAR, a laser-mapping technology able to see through gaps in the dense treetops to produce detailed maps of the landscape below. Those maps revealed hundreds of geometric earthworks that had remained hidden for centuries.

The newly discovered structures include squares, circles, rectangles, and multilateral enclosures connected by roads and clustered into monumental complexes.

Some feature ditches up to 43 feet wide and more than 16 feet deep, with towering earthen embankments rising alongside them. Although a handful of these earthworks had previously been identified in deforested areas using satellite imagery, LiDAR revealed that those earlier surveys had dramatically underestimated just how many remained obscured beneath the forest.

One of the study’s most striking findings was that LiDAR scanning uncovered roughly five times more earthworks than satellite imagery had detected across the same landscapes.

In one survey block, researchers had previously identified only 30 structures using conventional imagery. Meanwhile, LiDAR revealed 156. Assuming similar results across the wider region suggests that between roughly 24,000 and 30,000 earthworks may exist within the estimated boundaries of the Aquiry civilization.

Those numbers alone would rank the region among the most monument-rich archaeological landscapes in the world.

For decades, archaeologists have debated whether much of Amazonia could have maintained large, complex societies before European contact. Prevailing interpretations portrayed much of the rainforest as environmentally limiting, capable of sustaining only relatively small and dispersed populations. However, more recent discoveries, including ancient cities in Bolivia and Ecuador, have steadily challenged that assumption.

Now, these latest findings suggest the region may have supported an even larger and more sophisticated society than researchers once imagined.

Rather than representing isolated ceremonial sites scattered through an otherwise untouched forest, the researchers argue the earthworks belonged to a civilization extending about 71,000 square miles, representing about three times larger than previous estimates of the Aquiry cultural area.

Many of the geometric enclosures appear not to have been permanent settlements themselves. Instead, researchers believe they served as ceremonial, political, and public gathering places where dispersed communities periodically assembled.

Similar patterns of temporary gathering centers are known from the Inca Empire, where populations converged for rituals, governance, and communal events despite living across broad landscapes.

Constructing these massive earthworks would have demanded sophisticated planning, organized labor, mathematical knowledge, and long-term social coordination. According to the study, some of these ceremonial centers remained in use for nearly 1,500 years, indicating remarkable cultural continuity across generations.

Estimating how many people actually lived within this landscape presented a separate challenge.

Rather than simply multiplying earthworks by a fixed population estimate, the researchers combined several independent lines of evidence. They examined radiocarbon dates to determine how many sites were occupied simultaneously, compared the earthworks with later mound villages built in the same region, incorporated ethnographic information from Indigenous communities, and evaluated the labor required to construct and maintain the monumental enclosures.

Their study indicates the civilization reached its greatest extent between approximately A.D. 100 and 300. During that period, somewhere between one-quarter and roughly 60 percent of the known ceremonial centers may have been active simultaneously.

Assuming each ceremonial center served communities of roughly 300 people, the researchers estimate the region’s population reached between about 1.25 and 3 million people during its peak. After accounting for earthworks that LiDAR may have missed beneath dense forest, they conclude the total could have been as high as 3.8 million.

Those estimates substantially exceed many previous reconstructions of southwestern Amazonia and imply population densities rivaling or exceeding some later historical agricultural societies.

Equally significant is what these discoveries reveal about how ancient Amazonians altered their environment.

The study points to fertile soils rich in nutrients, evidence of extensive cultivation of maize, squash, manioc, beans, peanuts, sweet potatoes, and chili peppers, as well as widespread management of Brazil nut groves and numerous economically important palm species.

Rather than exhausting the rainforest, researchers contend these communities actively managed forests, soils, and waterways throughout centuries, creating ecological legacies that remain visible today in the composition and biodiversity of Amazonian forests.

Present-day ecological studies have increasingly shown that many Amazonian forests long regarded as pristine wilderness actually bear the imprint of thousands of years of Indigenous landscape management. If similar densities of monumental earthworks are identified elsewhere across Amazonia, researchers argue that assumptions about precolonial population sizes, biodiversity patterns, soil formation, and even climate models may need substantial revision.

The work additionally underscores the key role of LiDAR in modern archaeology. Over the past decade, the technology has revealed hidden Maya cities beneath Central American jungles, extensive urban complexes in the Bolivian Amazon, and extensive settlements in Ecuador’s Upano Valley.

Nevertheless, researchers caution that important questions remain unanswered. The southeastern limits of the Aquiry civilization are still poorly understood because large portions of Rondônia have yet to receive comparable archaeological investigation. Dense vegetation also continues to obscure portions of the landscape, meaning many earthworks almost certainly remain undiscovered even after LiDAR surveys.

“These ancient achievements constitute an important legacy that is still observable in the soil, and the composition and biodiversity of the contemporary tropical forest,” researchers write. “This legacy should be fully considered in future studies of Amazonia, including climate modeling and sustainable land-use planning.”

The recent study, “Over 20,000 precolonial earthworks in the Southwest Amazonia,” by Martti Pärssinen et al., appeared in Nature.

Tim McMillan is a retired law enforcement executive, investigative reporter and co-founder of The Debrief. His writing typically focuses on defense, national security, the Intelligence Community and topics related to psychology. You can follow Tim on Twitter: @LtTimMcMillan.  Tim can be reached by email: tim@thedebrief.org or through encrypted email: LtTimMcMillan@protonmail.com 

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Deep in Taiwan’s misty mountains, researchers have confirmed the tallest tree in the country: a thousand-year-old fir tree higher than a 20-story building, which they’ve named “the heaven sword of the Da’an River.” Climbers scaled the tree and dropped a measuring tape from the top to the forest floor during the Lunar New Year holiday in January 2023. The tree measured 84.1-meters (276-feet). The findings have been published in Frontiers in Forests and Global Change. A team of ecologists, geologists, remote-sensing specialists, professional climbers and Indigenous people that calls itself the “Taiwan tree seekers” began the search in 2014. “The common characteristics [of the team] are probably that we are all tree lovers and like adventures,” Rebecca Chia-Chun Hsu, lead author from Division of Forest Ecology, Institute of Taiwan Forestry Research, told CNN. ‘The Heaven Sword’, Taiwan’s tallest tree, measures 84.1 meters. Photo courtesy of Steven Pearce. Taiwan is one of the few places on Earth where trees can grow this tall. The island sits where the tropics meet the subtropics, and its mountains host several giant conifer species. The species behind the new record, Taiwania cryptomerioides, is known to the Indigenous Rukai people as “the tree that hits the moon.” Although nearly 60% of Taiwan is covered in forest, loggers cleared much of the island’s old-growth forest between 1912 and 1991. However, its steep slopes were too dangerous to reach, and pockets of ancient forest survived. Still, finding the tallest tree amid the rugged terrain was a task. Taiwan…This article was originally published on Mongabay

Day 7 of creation week established the need of rest for all creation. God left off creating on the sixth day and rested the seventh day making it a day of rest for mankind. God's design in unchanging laws reveal the mind of our God.