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Honeybee venom kills hard-to-treat breast cancer cells in new study
An active component of honeybee venom rapidly killed two particularly aggressive forms of breast cancer in a laboratory study.
- New laboratory studies by a team of scientists found that the active component of honeybee venom induced death in two forms of malignant breast cancer cells that are notoriously difficult to treat.
- The magic healing molecule in the honeybees' venom appears to be melittin, which rapidly killed cancer cells in under an hour.
- In the future, doctors could potentially use melittin alongside chemotherapy drugs to increase the efficacy of the treatment.
Since ancient times, the honeybee's (Apis mellifera) honey has been hailed for its medicinal properties. Now, scientists are discovering the miraculous healing potential of its sting in curing cancer. New laboratory studies by a team of Australian researchers have found that the active component of honeybee venom, melittin, rapidly killed two forms of malignant breast cancer cells that are notoriously difficult to treat while leaving healthy cells unharmed.
The magic molecule
Previously, honeybee venom has shown potential in treating other medical conditions such as eczema and tumors, and it has been known to have anticancer properties. How the venom works against tumors on a molecular level hasn't been understood, but science just got a lot closer.
It seems that the magic healing ingredient in the honeybees' venom is melittin — the zingy molecule responsible for producing the painful sting of a bee. Scientists at the Harry Perkins Institute of Medical Research in Perth, Australia and the University of Western Australia found that the melittin induced cancer cell death.
Their lab study, reported in the journal NPJ Precision Oncology, is the first to have looked into the effect the ingredient has on a range of breast cancers, the most common cancer in women worldwide. The two most aggressive and hard-to-treat types are known as triple-negative breast cancer (TNBC) and HER2-enriched breast cancer, which tend to mutate to resist existing treatments. The researchers found that melittin rapidly kills these cancer types and, critically, does so with no negative effects on normal cells.
"The venom was extremely potent," said research leader Ciara Duffy from The Harry Perkins Institute of Medical Research in a news release. "We found that melittin can completely destroy cancer cell membranes within 60 minutes."
The lab study also found that bumblebee venom (which does not contain melittin) did not kill those particular breast cancer cells.
How it works
Melittin disarms cancer cells by puncturing holes in their outer membrane. Another stunning effect: within just 20 minutes of exposure to melittin, the chemical messages cancer cells need to grow and divide are disrupted.
"We looked at how honeybee venom and melittin affect the cancer signaling pathways, the chemical messages that are fundamental for cancer cell growth and reproduction, and we found that very quickly these signaling pathways were shut down," said Duffy.
The molecule is able to do this by stopping the activation of receptors that signal growth factors in the cells' membranes. The large number of these receptors in HER2-enriched cancer cells and some TNBC cells is one reason for their uncontrollable growth. Melittin seems to halt the cell's proliferation by blocking those growth signals from getting through.
"Significantly, this study demonstrates how melittin interferes with signalling pathways within breast cancer cells to reduce cell replication," said Western Australia's Chief Scientist Professor Peter Klinken. "It provides another wonderful example of where compounds in nature can be used to treat human diseases."
Enhancing current cancer treatments
The team also tested to see if melittin could be used with existing chemotherapy drugs, as the pores in the membranes that it creates may allow other treatments to faster penetrate and kill cancer cells.
They tested the idea on a lab mouse with triple-negative breast cancer. They injected it with a combination of melittin and docetaxel — a drug used to treat a number of cancers including breast cancer. The mixture proved to be more effective at shrinking the tumors than either melittin or docetaxel alone.
In the future, doctors could potentially use melittin alongside chemotherapy drugs to enhance the efficacy of the treatment. This may allow them to reduce the dosage of chemotherapy drugs, and the adverse side effects that come with it.
The authors in the study point out that honeybee venom is inexpensive and easy to obtain, thus making it a fantastic option for cancer treatment in regions and countries with poorly resourced health services and care.
"Honeybee venom is available globally and offers cost effective and easily accessible treatment options in remote or less developed regions," the authors write. "Further research will be required to assess whether the venom of some genotypes of bees has more potent or specific anticancer activities, which could then be exploited."
Though exciting, this research is still in early, lab testing stages. The researchers will still need to perform clinical trials to assess the safety and efficacy of melittin for treating breast cancer in humans.
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What is human dignity? Here's a primer, told through 200 years of great essays, lectures, and novels.
- Human dignity means that each of our lives have an unimpeachable value simply because we are human, and therefore we are deserving of a baseline level of respect.
- That baseline requires more than the absence of violence, discrimination, and authoritarianism. It means giving individuals the freedom to pursue their own happiness and purpose.
- We look at incredible writings from the last 200 years that illustrate the push for human dignity in regards to slavery, equality, communism, free speech and education.
The inherent worth of all human beings<p>Human dignity is the inherent worth of each individual human being. Recognizing human dignity means respecting human beings' special value—value that sets us apart from other animals; value that is intrinsic and cannot be lost.</p> <p>Liberalism—the broad political philosophy that organizes society around liberty, justice, and equality—is rooted in the idea of human dignity. Liberalism assumes each of our lives, plans, and preferences have some unimpeachable value, not because of any objective evaluation or contribution to a greater good, but simply because they belong to a human being. We are human, and therefore deserving of a baseline level of respect. </p> <p>Because so many of us take human dignity for granted—just a fact of our humanness—it's usually only when someone's dignity is ignored or violated that we feel compelled to talk about it. </p> <p>But human dignity means more than the absence of violence, discrimination, and authoritarianism. It means giving individuals the freedom to pursue their own happiness and purpose—a freedom that can be hampered by restrictive social institutions or the tyranny of the majority. The liberal ideal of the good society is not just peaceful but also pluralistic: It is a society in which we respect others' right to think and live differently than we do.</p>
From the 19th century to today<p>With <a href="https://books.google.com/ngrams/graph?year_start=1800&year_end=2019&content=human+dignity&corpus=26&smoothing=3&direct_url=t1%3B%2Chuman%20dignity%3B%2Cc0" target="_blank" rel="noopener noreferrer">Google Books Ngram Viewer</a>, we can chart mentions of human dignity from 1800-2019.</p><img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNDg0ODU0My9vcmlnaW4ucG5nIiwiZXhwaXJlc19hdCI6MTY1MTUwMzE4MX0.bu0D_0uQuyNLyJjfRESNhu7twkJ5nxu8pQtfa1w3hZs/img.png?width=980" id="7ef38" class="rm-shortcode" data-rm-shortcode-id="9974c7bef3812fcb36858f325889e3c6" data-rm-shortcode-name="rebelmouse-image" />
American novelist, writer, playwright, poet, essayist and civil rights activist James Baldwin at his home in Saint-Paul-de-Vence, southern France, on November 6, 1979.
Credit: Ralph Gatti/AFP via Getty Images
The future of dignity<p>Around the world, people are still working toward the full and equal recognition of human dignity. Every year, new speeches and writings help us understand what dignity is—not only what it looks like when dignity is violated but also what it looks like when dignity is honored. In his posthumous essay, Congressman Lewis wrote, "When historians pick up their pens to write the story of the 21st century, let them say that it was your generation who laid down the heavy burdens of hate at last and that peace finally triumphed over violence, aggression and war."</p> <p>The more we talk about human dignity, the better we understand it. And the sooner we can make progress toward a shared vision of peace, freedom, and mutual respect for all. </p>
With just a few strategical tweaks, the Nazis could have won one of World War II's most decisive battles.
- The Battle of Britain is widely recognized as one of the most significant battles that occurred during World War II. It marked the first major victory of the Allied forces and shifted the tide of the war.
- Historians, however, have long debated the deciding factor in the British victory and German defeat.
- A new mathematical model took into account numerous alternative tactics that the German's could have made and found that just two tweaks stood between them and victory over Britain.
Two strategic blunders<p>Now, historians and mathematicians from York St. John University have collaborated to produce <a href="http://www-users.york.ac.uk/~nm15/bootstrapBoB%20AAMS.docx" target="_blank">a statistical model (docx download)</a> capable of calculating what the likely outcomes of the Battle of Britain would have been had the circumstances been different. </p><p>Would the German war effort have fared better had they not bombed Britain at all? What if Hitler had begun his bombing campaign earlier, even by just a few weeks? What if they had focused their targets on RAF airfields for the entire course of the battle? Using a statistical technique called weighted bootstrapping, the researchers studied these and other alternatives.</p><p>"The weighted bootstrap technique allowed us to model alternative campaigns in which the Luftwaffe prolongs or contracts the different phases of the battle and varies its targets," said co-author Dr. Jaime Wood in a <a href="https://www.york.ac.uk/news-and-events/news/2020/research/mathematicians-battle-britain-what-if-scenarios/" target="_blank">statement</a>. Based on the different strategic decisions that the German forces could have made, the researchers' model enabled them to predict the likelihood that the events of a given day of fighting would or would not occur.</p><p>"The Luftwaffe would only have been able to make the necessary bases in France available to launch an air attack on Britain in June at the earliest, so our alternative campaign brings forward the air campaign by three weeks," continued Wood. "We tested the impact of this and the other counterfactuals by varying the probabilities with which we choose individual days."</p><p>Ultimately, two strategic tweaks shifted the odds significantly towards the Germans' favor. Had the German forces started their campaign earlier in the year and had they consistently targeted RAF airfields, an Allied victory would have been extremely unlikely.</p><p>Say the odds of a British victory in the real-world Battle of Britain stood at 50-50 (there's no real way of knowing what the actual odds are, so we'll just have to select an arbitrary figure). If this were the case, changing the start date of the campaign and focusing only on airfields would have reduced British chances at victory to just 10 percent. Even if a British victory stood at 98 percent, these changes would have cut them down to just 34 percent.</p>
A tool for understanding history<p>This technique, said co-author Niall Mackay, "demonstrates just how finely-balanced the outcomes of some of the biggest moments of history were. Even when we use the actual days' events of the battle, make a small change of timing or emphasis to the arrangement of those days and things might have turned out very differently."</p><p>The researchers also claimed that their technique could be applied to other uncertain historical events. "Weighted bootstrapping can provide a natural and intuitive tool for historians to investigate unrealized possibilities, informing historical controversies and debates," said Mackay.</p><p>Using this technique, researchers can evaluate other what-ifs and gain insight into how differently influential events could have turned out if only the slightest things had changed. For now, at least, we can all be thankful that Hitler underestimated Britain's grit.</p>
A new study shows our planet is much closer to the supermassive black hole at the galaxy's center than previously estimated.
Arrows on this map show position and velocity data for the 224 objects utilized to model the Milky Way Galaxy. The solid black lines point to the positions of the spiral arms of the Galaxy. Colors reflect groups of objects that are part of the same arm, while the background is a simulation image.
Apple sold its first iPod in 2001, and six years later it introduced the iPhone, which ushered in a new era of personal technology.