LSE agrees LCH Clearnet purchase







The London Stock Exchange is to buy a 60% stake in LCH Clearnet, the European clearing house, but for a lower price.






The LSE will pay 366m euros ($ 482m; £300m), about 100m euros below the original offer price.


The lower price reflected new European rules requiring clearing houses to hold more capital, the companies said.


Clearing houses enable the trading of shares between two parties, charging a fee to guarantee the sales should one side default.


By requiring clearing houses to hold more money in reserve, the authorities hope to protect such firms against a major customer hitting a financial crisis.


“Today’s announcement is a success for LSE shareholders,” said Peter Lenardos, analyst at RBC Capital Markets.


“We believe that shareholder approvals will be sought in January and we still expect the transaction to complete in the first quarter of 2013.”


The deal was originally due to be completed by the end of this year. The UK’s Office of Fair Trading approved the acquisition earlier this month.


By taking over LCH, the LSE should be better able to compete with rivals such as NYSE Euronext and Deutsche Börse, which own clearing houses.


Demand for clearing transactions are expected to increase over the next few years as regulators force banks and other parties to channel trades through regulated clearing houses to ensure their risk positions can be better monitored.


BBC News – Business





Title Post: LSE agrees LCH Clearnet purchase
Rating:
100%

based on 99998 ratings.
5 user reviews.
Author: Fluser SeoLink
Thanks for visiting the blog, If any criticism and suggestions please leave a comment




Read More..

New Zealand level series thanks to Guptill century






EAST LONDON, South Africa (Reuters) – A brilliant, unbeaten century from opener Martin Guptill led New Zealand to an eight-wicket victory off the final ball against South Africa in the second T20 international on Sunday.


Chasing 169 for victory in 19 overs at Buffalo Park, Guptill helped erase the memory of Friday’s embarrassing capitulation to 86 all out in Durban with a stunning batting display as the tourists reached their target for the loss of just two wickets to level the series 1-1.






Requiring 39 from the final four overs and 11 off the last, Guptill was on 97 and needing four for victory when Rory Kleinveldt bowled the final delivery – a low full toss which was eased away through extra cover.


Guptill’s unbeaten 101 was just the third T20 international century by a New Zealander, the first two belonging to captain Brendon McCullum who was almost anonymous with 17 from 15 balls during a second-wicket partnership of 73 with Guptill.


The right-handed opener was similarly dominant during an opening stand of 76 with Rob Nicol (25) as he drove the Proteas attack impeccably straight and displayed the skills – and patience – so obviously missing from the New Zealand batsman in Durban.


Captain Faf du Plessis led from the front once again as South Africa posted a competitive 165-5 in 19 overs after losing the toss and being asked to bat first.


Du Plessis paced his innings to perfection on a tricky pitch to reach 63 from 43 balls with eight fours and a six in a match reduced to 19 overs per side following a 52-minute floodlight failure.


The deciding match takes place in Port Elizabeth on Wednesday.


Australia / Antarctica News Headlines – Yahoo! News





Title Post: New Zealand level series thanks to Guptill century
Rating:
100%

based on 99998 ratings.
5 user reviews.
Author: Fluser SeoLink
Thanks for visiting the blog, If any criticism and suggestions please leave a comment




Read More..

8 New Etiquette Rules for Using Gadgets in the Office






As the use of personal technology increases at work, it’s important to observe some new etiquette rules about how we use it. Here are eight of the most important rules to follow at work when it comes to cell phones, email, and other modern technology.


1. Using speaker phone when others can hear you. Playing back your voicemail messages on speaker phone or conducting an entire call on speaker phone is distracting to people trying to work around you. Even if you’re in an office with the door closed, speakerphone noises tend to travel. Don’t value your hands-free convenience over the ability of others to focus on their work.






2. Keeping your cell phone out so you can glance at it during meetings. Glancing down at your phone while you’re supposed to be focused on a meeting signals that you’re bored, not fully engaged, or don’t respect the time of the people you’re meeting with. If you must keep your phone out because you’re expecting an important call or text, explain that at the start of the meeting so that people don’t assume you’re just being rude.


3. Don’t overuse “reply all.” When multiple people are included on an email chain, they don’t all need to see your reply of “thanks” or “will do.” Only use “reply all” if everyone included truly needs to see your response; otherwise, stick with “reply” so your response goes only to the sender and doesn’t clutter multiple in-boxes.


4. Don’t email and phone with the same message; pick one or the other. Nothing is more annoying than starting to read an email, only to have the email’s sender pop his head in your office to repeat the same message.


5. Turn off your cell phone’s ringer if you leave it behind while you’re away from your desk. Ask any office worker, and you’ll hear stories about the annoying guy who leaves his phone behind with his ringer on full-volume while he goes to meetings … leaving his co-workers forced to hear repeated renditions of “Who Let the Dogs Out” or whatever else he’s chosen for his ringtone.


6. Placing calls from a noisy location. If you make a call, ensure you’re somewhere where you and the person you’re speaking with will be able to hear each other–and where you can give your full focus. It’s irritating to get a call from someone who immediately puts you on hold to order coffee because she just reached the front of the line.


7. Keep religious and political messages out of your email signature. Including religious or political messages is likely to offend or at least irritate some of your recipients, and introduces topics that don’t belong in a professional setting. Keep your sign-off neutral and professional.


8. Don’t use your work email as your personal email. In most offices, sending occasional personal emails from your work account is fine, but you should use your personal account for most personal things. If you treat your work email as your default personal account, chances are good that when you leave your job and your inbox and sent folder are full of personal messages, one of your co-workers will be stuck reading through all of them, as they clean out your account for your replacement. In the best case scenario, that’s merely a nuisance for a co-worker –but in the worst case scenario, it could lead to embarrassing revelations.


Alison Green writes the popular Ask a Manager blog, where she dispenses advice on career, job search, and management issues. She’s also the co-author of Managing to Change the World: The Nonprofit Manager’s Guide to Getting Results, and former chief of staff of a successful nonprofit organization, where she oversaw day-to-day staff management, hiring, firing, and employee development.


Wireless News Headlines – Yahoo! News





Title Post: 8 New Etiquette Rules for Using Gadgets in the Office
Rating:
100%

based on 99998 ratings.
5 user reviews.
Author: Fluser SeoLink
Thanks for visiting the blog, If any criticism and suggestions please leave a comment




Read More..

Pro-gun rights US petition to deport Piers Morgan






LONDON (AP) — Tens of thousands of people have signed a petition calling for British CNN host Piers Morgan to be deported from the U.S. over his gun control views.


Morgan has taken an aggressive stand for tighter U.S. gun laws in the wake of the Newtown, Connecticut, school shooting. Last week, he called a gun advocate appearing on his “Piers Morgan Tonight” show an “unbelievably stupid man.”






Now, gun rights activists are fighting back. A petition created Dec. 21 on the White House e-petition website by a user in Texas accuses Morgan of engaging in a “hostile attack against the U.S. Constitution” by targeting the Second Amendment. It demands he be deported immediately for “exploiting his position as a national network television host to stage attacks against the rights of American citizens.”


The petition has already hit the 25,000 signature threshold to get a White House response. By Monday, it had 31,813 signatures.


Morgan seemed unfazed — and even amused — by the movement.


In a series of Twitter messages, he alternately urged his followers to sign the petition and in response to one article about the petition said “bring it on” as he appeared to track the petition’s progress.


“If I do get deported from America for wanting fewer gun murders, are there any other countries that will have me?” he wrote.


Entertainment News Headlines – Yahoo! News





Title Post: Pro-gun rights US petition to deport Piers Morgan
Rating:
100%

based on 99998 ratings.
5 user reviews.
Author: Fluser SeoLink
Thanks for visiting the blog, If any criticism and suggestions please leave a comment




Read More..

FDA warns doctors of counterfeit Botox






WASHINGTON (AP) — Federal regulators have warned more than 350 medical practices that Botox they may have received from a Canadian supplier is unapproved and could be counterfeit or unsafe.


The Food and Drug Administration said in a letter sent last month, a letter released publicly last week, that batches of the wrinkle treatment shipped by suppliers owned by pharmacy Canada Drugs have not been approved by the FDA and that the agency cannot assure their effectiveness or their safety.






The FDA said Canada Drugs was previously tied to shipping unapproved and counterfeit cancer drugs.


The agency warned doctors about buying drugs from sources other than licensed U.S. pharmacies. It is the fifth warning the agency has made this year about foreign suppliers providing unapproved drugs.


In February, the agency warned 19 medical practices that they had received a counterfeit version of the cancer drug Avastin. On three more occasions the FDA issued similar warnings about counterfeit Avastin and Altuzan, another brand name for the same drug. The alerts were also primarily targeted at drugs distributed by Canada Drugs.


A request for comment from the drug distributor was not immediately returned.


Drug shortages increased the financial incentives for some pharmacies to provide counterfeit or illegally imported drugs. The drugs subject to warnings have all been injectable treatments typically distributed through medical practices and not directly to patients.


In October, the FDA ordered operators of about 4,100 websites to immediately stop selling unapproved medications to U.S. consumers. The vast majority of those sites were operated by Canada Drugs. The site was still operating Friday.


Genuine Botox is made by Allergan Inc., based in Irvine, Calif. Avastin is made by Roche Holding AG’s Genentech unit.


___


Online:


The FDA’s warning letter, plus a list of doctors who received it: http://1.usa.gov/R7jKiR


Health News Headlines – Yahoo! News





Title Post: FDA warns doctors of counterfeit Botox
Rating:
100%

based on 99998 ratings.
5 user reviews.
Author: Fluser SeoLink
Thanks for visiting the blog, If any criticism and suggestions please leave a comment




Read More..

China and India: The $10 Trillion Engine of Future U.S. Growth






My friend and colleague Michael J. Silverstein, writing in this space in late October, mentioned that the most dangerous thing about China is America’s misguided attitude toward the country. In short, we appear to be afraid of China’s success.


The U.S. has never before run from a challenge. This is the wrong time to start.






As Silverstein and his co-authors—Carol Liao, David Michael, and Abheek Singhi—point out in their new book, The $ 10 Trillion Prize, one of the reasons many Americans feel threatened by China is they don’t know a lot about the country. What they do “know,” by and large, is what they’ve been told by politicians and others who accuse China of stealing U.S. jobs.


Yes, many low-skill, low-wage U.S. jobs have moved elsewhere, in many cases to China. Yes, many low-cost, mass-produced products that used to be made here are now being made there, and in other low-cost countries, such as India, Indonesia, Malaysia, Mexico, Thailand, and Vietnam. And, yes, many of those jobs will never come back.


But as China and the other developing countries grow, they also become potential customers for U.S. goods and services, from corn and soybeans to automobiles, commercial jetliners, heavy machinery, construction and farm equipment, and banking, investment, and insurance services, to name just a few.


It wasn’t that long ago that the prevailing American vision of the Middle Kingdom was that of millions of mindless peasants marching in automaton-like lockstep to the orders of the party bosses. They led lives of drudgery, on collective farms, toiling for mere survival. Everybody dressed like Chairman Mao. Dissent was met with tanks. And it wasn’t that long ago that that may have been accurate in some respects.


But China today, as Silverstein and his co-authors make clear, is a booming multiclass society with hundreds of millions of people who want nothing more than their own version of the American Dream: a nice home, a quality car, a good education for their children, appliances and conveniences, better health care, stylish clothes, more time for travel and leisure. In short: a better life for the next generation than the current generation enjoyed. The same is true in India.


The authors visited with and tell the stories of dozens of Chinese and Indian families and entrepreneurs who are striving for the same things Americans want—and for the first time in their lives, they have the money to get them.


My colleagues have calculated that between 2010 and 2020, Chinese and Indian consumers will spend some $ 64 trillion on goods and services. Chinese consumers will spend approximately $ 41.5 trillion, with annual expenditures reaching more than $ 6 trillion in 2020. Indians will spend $ 22.5 trillion, with annual spending hitting an estimated $ 3.6 trillion by 2020. Combined, they will be spending some $ 10 trillion per year by 2020—more than three times what they spent in 2010.


That’s what U.S. politicians and business leaders should be talking about: the promise of China and India as engines of future U.S. growth. That’s the prize the book is about.


China and India today show the kind of unbridled optimism that used to be the hallmark of America. Many Chinese and Indian entrepreneurs expect their companies to grow by factors of 10 over the next decade.


Rather than fear such growth, Americans should embrace it, wish them well, and make sure our businesses, farms, and factories are prepared to meet their needs.


Businessweek.com — Top News





Title Post: China and India: The $10 Trillion Engine of Future U.S. Growth
Rating:
100%

based on 99998 ratings.
5 user reviews.
Author: Fluser SeoLink
Thanks for visiting the blog, If any criticism and suggestions please leave a comment




Read More..

3-day trip becomes 3-week ordeal for 2 Jamaicans






SAN JUAN, Puerto Rico (AP) — It was supposed to be a three-day fishing trip at most. It turned into a three-week ordeal, drifting under an intense sun for hundreds of miles in the Caribbean in a small boat with a broken motor.


The two Jamaican fishermen survived by eating raw fish they caught and drinking water from melted ice they had brought to preserve their catch. The Colombian navy finally plucked them from the sea a week ago and delivered them home Saturday after treating them for severe dehydration, malnutrition and hypothermia.






Everton Gregory, 54, and John Sobah, 58, recounted their story in a telephone interview from Jamaica, while the boat owner and the men’s employer also provided details.


The men set off from Jamaica’s southeastern coast on Nov. 20. The water was glassy, the wind was calm and their boat was laden with 14 buckets of ice, 16 gallons of water and several bags of cereal, bread and fruit.


They headed to Finger Bank, a nearby sand spit 8-miles-long (13-kilometers) that is known for its abundance of fish like wahoo, tuna and mahi mahi. The owner of the 28-foot (8-meter) boat said she usually joins them on fishing trips, but she couldn’t go that afternoon.


After spending a couple of days around Finger Bank, the two men set off for home with their catch. But the boat’s engine soon died. The water was too deep to use the anchor and the current too strong to use the oars, so the boat slowly drifted away from Jamaica.


At first, the men got by on sipping the water and eating the food they brought with them. But days turned into weeks, and they began to eat the fish they had caught and drink the melted ice that had kept it fresh.


Gregory and Sobah kept eating raw fish and used a tarp to try to collect water, but the rain clouds remained at a distance.


Back home, friends and family called police and used their own boats to search the area where the men were last seen. The two fishermen work for the Florida-based nonprofit group Food for the Poor, which chartered a plane to search along Jamaica’s coast.


Marva Espuet, the owner of the boat, said she knew she had packed it with more food and water than needed for a three-day trip, but the thought provided little relief.


“If I had gone, there would have been two boats going,” said the 52-year-old woman, a longtime friend of both fishermen.


With searches proving fruitless, Sobah’s niece grew frantic, recalled Nakhle Hado, a fishing manager for Food for the Poor who helped lead the search. She “begged me that she wanted John back for Christmas,” Hado said.


Hado said some people believed the two men would never be found, but he and others didn’t give up. “My gut was telling me that they were still alive,” he said.


Hado said he had trained Gregory and Sobah on how to survive at sea.


“In case something happens, they don’t have to think twice. They know how to react,” he said. “It’s very important, their mental state.”


Gregory and Sobah finally ran out of fresh water and went several days without drink. A healthy human being can die from dehydration anywhere from three to five days without water.


Then on Dec. 12, a Colombian navy helicopter patrolling off the coast of that South American country spotted the men near Lack of Sleep cay, more than 500 miles (800 kilometers) from where they started. It took two days for a navy vessel to reach them because of bad weather. The men were hospitalized for several days at the Colombian island of San Andres before boarding a plane back home to Jamaica.


“It feels good,” Sobah told the AP in a brief phone interview after arriving.


Gregory said he had lost hope, but Sobah tried to keep him positive that they would be rescued. “I just had that belief,” Sobah said. “I believe in the Creator.”


Yet it is Gregory who plans to keep fishing despite the ordeal because he needs the job.


Sobah said he’s done. “I’m not going to go fishing again. No way.”


Latin America News Headlines – Yahoo! News





Title Post: 3-day trip becomes 3-week ordeal for 2 Jamaicans
Rating:
100%

based on 99998 ratings.
5 user reviews.
Author: Fluser SeoLink
Thanks for visiting the blog, If any criticism and suggestions please leave a comment




Read More..

Without an ‘iTV,’ Apple’s growth could shrink to the single digits by 2015






Another analyst believes that Apple is losing its shine. Toni Sacconaghi of Bernstein Research on Thursday trimmed his price target for the company, citing concerns that growth may be slowing. The analyst believes that iPhone sales will remain strong for at least the next two years, however Apple (AAPL) is expected to lose overall market share “if it does not bring out a lower-price device” in the wake of a changing industry. Sacconaghi notes that the iPad should continue to see success in a tablet market that is “a rocket…an absolute juggernaut,” with tablet PC shipments estimated to more than triple over the next five years. It is believed, however, that Apple will likely become a single digit growth company by 2015, unless it releases a new major product such as an HDTV.


[More from BGR: RIM’s biggest problem: It’s still scrambling to catch yesterday’s hottest mobile app]






“That said, it will have a pristine balance sheet, and be generating a mind-boggling $ 49 billion in free cash flow a year after paying its current dividend,” Sacconaghi wrote in a note to investors, according to Forbes. “More importantly, we believe that Apple’s innovation offers significant option value, which is not in our forecast. Three years ago, the iPad did not exist. Today it generates $ 32 billon in annual revenues, and as a standalone business would be the 11th biggest U.S. tech company. Potential ‘options’ for Apple investors include a lower-end iPhone, a television ‘solution,’ a larger iPad or converged device and monetizing advertising, e-commerce and search from its iOS platform (and credit card database) of 435 million users.”


[More from BGR: WhatsApp goes free for iPhone for a limited time]


The analyst kept his Outperform rating on shares of Apple, although he trimmed his price target from $ 800 to $ 750 and lowered his 2013 fiscal year EPS forecast to $ 49.41 per share, from $ 50.57.


This article was originally published by BGR


Gadgets News Headlines – Yahoo! News





Title Post: Without an ‘iTV,’ Apple’s growth could shrink to the single digits by 2015
Rating:
100%

based on 99998 ratings.
5 user reviews.
Author: Fluser SeoLink
Thanks for visiting the blog, If any criticism and suggestions please leave a comment




Read More..

Disney Sets August 9 Release for ‘Cars’ Spin-off ‘Planes’






NEW YORK (TheWrap.com) – Disney will release “Planes,” a spin-off of Pixar‘s “Cars” franchise, August 9, 2013, in the United States. DisneyToon Studios is behind the film with Pixar/Disney Animation chief creative officer John Lasseter producing.


The film follows a fleet of planes, in particular Dusty. “Two and a Half Men” star Jon Cryer was to voice Dusty, but he has dropped out and the studio is now casting the part.






Disney initially intended to release “Planes” direct to video, but it will now send it into theaters domestically and overseas.


“Planes” will compete against a pair of films that summer weekend, both of which should have more adult followings. The big-ticket item will be Sony’s “Elysium,” Neill Blomkamp‘s follow-up to “District 9.” Also opening that weekend is “We’re the Millers,” a New Line drug-smuggling comedy starring Jason Sudeikis and Jennifer Aniston.


Next summer’s biggest animated movies should all be sequels save “Epic,” Fox’s story of a teenage girl caught in a forested battle. Beyonce Knowles‘ leads the voice cast. The other big openers are Despicable Me 2,” “Monsters University” and “Smurfs 2.”


Movies News Headlines – Yahoo! News





Title Post: Disney Sets August 9 Release for ‘Cars’ Spin-off ‘Planes’
Rating:
100%

based on 99998 ratings.
5 user reviews.
Author: Fluser SeoLink
Thanks for visiting the blog, If any criticism and suggestions please leave a comment




Read More..

Cancer Immunotherapy Where Are We Going?






The compelling concept of utilizing the patient’s own immune system for a stronger and more effective way to attack cancer cells is not a new one. William Coley observed in 1891 that infections produced in patients with inoperable cancer following an injection of streptococcal organisms (Gram-positive bacteria) led to tumor shrinkage especially when the patients developed fever and other signs of a full-blown infection.1 Since then, research has embraced approaches to “train” the patient’s own immune system to recognize certain biomarkers or proteins that are mainly found on cancer cells and to destroy the cells.


After several setbacks the first cellular immunotherapy, Dendreon’s Sipuleucel-T (Provenge(R)), was approved for the treatment of prostate cancer in 2010. Today, new promising cancer immunotherapy approaches are in clinical trials. Most recently, researchers at the 54th American Society of Hematology (ASH) meeting reported early success with a developmental-stage cell-based cancer vaccine for the treatment of leukemia and have shown remission in several patients 2,3, including a 7-year old girl who relapsed twice after chemotherapy.Cancer immunotherapy can be thought of as either active or passive immunotherapy. The most prominent passive immunotherapies, which have revolutionized cancer therapy, are monoclonal antibodies that either target tumor-specific antigens and receptors or block important pathways central to tumor growth and survival. Therapeutic monoclonal antibodies are the market leader in the targeted cancer therapy space and include blockbusters such as trastuzumab (Herceptin(R)) or rituximab (Rituxan(R)).In general, antibodies are significant elements of the body’s adaptive immune system. They play a dominant role in the recognition of foreign antigens and the stimulation of the immune response. Therapeutic antibodies target and bind to antigens, usually proteins that are mainly expressed on diseased cells such as cancer cells. After binding, cancer cells can be destroyed by different mechanisms such as antibody-dependent cellular cytotoxicity, the activation of the complement system — an important part of the immune system — and triggering cell death.Although very successful, especially in oncology, therapeutic antibodies have a significant limitation: they don’t generate a memory response by the immune system, and thus, repeated antibody infusions are required. Further, monoclonal antibodies are only able to recognize specific proteins present of the cell surface. Monoclonal antibodies are mostly produced in cell culture systems which are often costly. Humanization of murine monoclonal antibodies by replacing of certain parts of the antibody with human sequences has improved the tolerability of antibodies and made them less immunogenic, but even fully human sequence-derived antibodies can carry some immunological risk.Novel approaches in the passive immunization strategy include antibody drug conjugates, a combination of targeting antibody with a very potent drug such as the recently approved brentuximab vedotin (ADCETRIS(TM)) for Hodgkin lymphoma and anaplastic large cell lymphoma (ALCL). ADCETRIS comprises an anti-CD30 monoclonal antibodyanti-CD30 monoclonal antibody and a cytotoxic (cell-killing) agent that is released upon internalization into CD30-expressing tumor cells. Currently, the development of next generations of ADCs is underway.Alternatively, specific and durable cancer immunotherapies designed to actively “train” or stimulate the patient’s intrinsic immune response have been more problematic; however, recent success stories, such as the cell-based immunotherapy Provenge, have revitalized this field. Dendreon’s approach modifies the patients’ own dendritic cells to present a protein specific to prostate cancer cells.Dendritic cells are the most potent, “professional” antigen-presenting cells. They process the antigen material and present it on their surface to other cells of the immune system. Once activated, the dendritic cells migrate to the lymphoid tissues where they interact with T-cells and B-cells — white blood cells and important components of the immune system — to initiate and shape the adaptive immune response. To develop Provenge, each patient’s own dendritic cells are harvested and then loaded ex vivo with the tumor-associated antigen. Now “presenting” the antigen, the dendritic cells are administered back into the patient to induce a potent, cell-mediated anticancer immune response resulting in tumor shrinkage and clinical benefit.In another experimental approach for the treatment of leukemia, patients’ own modified T-cells were infused back into the patients. Prior to this, the T-cells were transduced with a lentivirus to express the CD19-specific chimeric antigen receptor. CD19 is an antigen which is found on B-cell neoplasms, cancerous B-cells, and the lentivirus was the vehicle to transfer the genetic material for CD19 into the cells. A case report published in the New England Journal of Medicine stated that a patient with chronic lymphocytic leukemia (CLL) was in ongoing remission 10 months after treatment.3These promising results have spurred continued research for new and safe ways to achieve effective tumor vaccination, and drug developers have explored many cancer immunotherapy strategies. To generate an effective antitumor immunity, therapeutic intervention should drive several functions; specifically, it should promote the antigen presentation functions of dendritic cells, promote the production of protective T-cell responses, stimulate B-cells and overcome immunosuppression characteristics that are common to tumor cells.4Cell-based therapeutic vaccines are most frequently produced outside the patient’s body and involve isolation of the specific cells, such as dendritic cells, and the introduction of preselected antigens, often with the use of specific vehicle, into the cells. The antigens can be encoded in viral vectors (frequently DNA) or administered as peptides or proteins in a suitable adjuvant and carrier through a long and cumbersome process.During my doctoral thesis, I conducted immunization experiments using RNA as a negative control, assuming that the RNA would be degraded during the experiment thus making it impossible to use as a vaccine. The physiological role of messenger (m) RNA is to transfer genetic information from the nucleus to the cytoplasm where this information is translated into the corresponding protein. mRNA is known to be very unstable and has a relatively short half-life. But astonishingly, we were able to measure a solid T-cell immune response. We repeated the experiment and confirmed that the RNA we had produced had the potential to be used as a vaccine. Importantly, we didn’t need to isolate the patients’ cells: mRNA-based vaccines can be injected directly into the skin (intradermal). The mRNA-based vaccines are then taken up by antigen-presenting cells, such as dendritic cells, and are then able to induce an immune response. Importantly, mRNA-vaccines can also be synthesized quickly for any antigen sequence identified.5The first mRNA-based vaccines (RNActive(R)) are now in the clinic for the treatment of prostate cancer and lung cancer and have demonstrated that they do what they are supposed to do – induce a balanced humoral, as well as T cell-mediated, immune response that is entirely HLA independent. The HLA (human leukocyte antigen) system is used to differentiate the body’s own cells (self) and non-self cells. Additionally, RNA-vaccines do not need a vehicle such as a virus for delivery to the cells, nor do they contain virus-derived elements that are often found in DNA-vaccines. These attributes make RNActive a very safe therapeutic.The risk of integration of the RNA into the host-genome is minimized (RNA would have been transcribed first to DNA, and then it has to be transported to the nucleus), as is the residual risk of DNA-based vaccines for inactivating or activating genes or affecting cellular regulatory elements, which can induce oncogenesis. Thus, the favorable safety profile of mRNA-based therapies broadens their potential use not only for the treatment of diseases but for use as prophylactic vaccinations. A recent proof-of-concept study using mRNA-based vaccines (RNActive) in animal models for influenza was published in Nature Biotechnology.6Therapeutic cancer immunotherapies and vaccines have come a long way, and novel, promising approaches give hope for safe and effective treatment options. This may one day lead to the treatment of all cancers as chronic diseases.Literature1Kirkwood JM, Butterfield LH, Tarhini AA, Zarour H, Kalinski P, Ferrone S: Immunotherapy of cancer in 2012. CA Cancer J Clin. 20122June CH, Blazar BR: T-Cell Infusions: A New Tool for Transfusion Medicine That Has Come of Age. Presentation at 54th ASH Annual Meeting 20133Porter DL, Levine BL, Kalos M, Bagg A, and June CH: Chimeric Antigen Receptor-Modified T Cells in Chronic Lymphoid Leukemia. N Engl J Med 20114Mellman I, Coukos G, Dranoff G: Cancer immunotherapy comes of age. Nature. 2011Petsch B, Schnee M, Vogel AB, Lange E, Hoffmann B, Voss D, Schlake T, Thess A, Kallen KJ,5Hoerr I, Obst R, Rammensee HG, Jung G: In vivo application of RNA leads to induction of specific cytotoxic T lymphocytes and antibodies. Eur J Immunol. 20006Petsch B, Schnee M, Vogel AB, Lange E, Hoffmann B, Voss D, Schlake T, Thess A, Kallen KJ, Stitz L, Kramps T: Protective efficacy of in vitro synthesized, specific mRNA vaccines against influenza A virus infection. Nat Biotechnol. 2012 






Follow Scientific American on Twitter @SciAm and @SciamBlogs.Visit ScientificAmerican.com for the latest in science, health and technology news.
© 2012 ScientificAmerican.com. All rights reserved.
Health News Headlines – Yahoo! News





Title Post: Cancer Immunotherapy Where Are We Going?
Rating:
100%

based on 99998 ratings.
5 user reviews.
Author: Fluser SeoLink
Thanks for visiting the blog, If any criticism and suggestions please leave a comment




Read More..