The Battalion. (College Station, Tex.) 1893-current, February 28, 2002, Image 13

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TERNATICI HE BATTnl Sd Tech m r conditioned ^ w here ini H. Rumsft is of al-Q; n focusing ot THE BATTALION 5B Thursday, February 28, 2002 he truth about cloning By Anuj Trehan THE BATTALION On Saturday, Dec. 22, 2001, arbon copy (cc) was bom. Not being heic only does this add to a growing i ' Bay may be list of cloned animals but recog- ■izes Texas A&M as the first to t_*,” he said ! clone a companion animal, .tred," Rum>:;f*’hese developments are becom- Jy soon. ing hot topics in science, poli- >rs have sot. tics and the media, leaving empt future: many wondering what cloning ’hi on theu leally is. c vk hereaboi;: w Cloning is a procedure used create a new organism whose genetic constitution is nearly ■te replica of another existing it dividual. The organisms involved have similar DNA but lot necessarily similar expres sions of that DNA, which lieans the clone may not look Bxactly like its donor. I The principle of cloning for 111 organisms is the same no matter how big or small the Irganism may be. Each organ ism develops from a single cell liat divides to form different A'pes of cells, w hich eventually 1* Jorm different parts of an pm it or s anism - Animal cloning is done by L substituting the nucleus, which k Montains the DNA from a cell in Hn individual's body, as the nucleus of a fertilized egg. Thus, the nucleus of the egg will it Ux)k pour' 8^1 ousted b\ ■ last year. 1 00 banninip” duced prod, x’rcent —1> ne claim. Ov s a con job rought did c he said, banning pot ;ld on to a w ay, is to ;ute. Runt' tribunal uc ian or milit ntr\ for pn l ’S. custw secrecy im ish admini't ns would e from mon Saudi Aral turned forpr: contain the same genetic materi al as the donor. The egg/cell “couplet” fuses and begins to divide like an embryo. But the clone and the organ ism from which it was cloned are not identical. The nuclei will contain the same DNA, but the mitochondria within the cells also contain genetic mate rial, which is still distinct to each organism. The egg starts to develop in a controlled lab setting until it is developing normally. It is then transferred into the womb of a surrogate mother who carries it to term. The success rate for the proper development of the egg is very small, usually no more than 1 percent. Scientists do not know why the success rate is so small. Dr. Mark Westhusin has been working to clone dogs, cats and horses with the Missyplicity Project, an effort that began in 1999. “We do not know why only one of the embryos that were transferred survived,” Westhusin said. “This is common for all species that have been cloned to date. We know the process of cloning animals is inefficient but do not know why so many embryos fail to develop. This will require much more research DONOR. rt.Rjajyi.i) jgPte. Ec.t: 1 fr 1 ECC AND DNA rusn ECC TRANSFERED TO SURROGATE MOTHER ECC GROWS LIKE NORMAL EMBRYO FRANK CHANCE • THE BATTALION The cloning process uses the DNA from the cell nucleus of the organism to be cloned and an enucleated fertilized egg. to try and figure this out.” The newest A&M clone, cc, is a tiger-tabby domestic short- hair cat. Rainbow, her genetic donor, is a calico domestic shorthair. A detailed genetic analysis showed that DNA from the clone, the genetic donor and the surrogate mother was found to be the same, confirming cc as a clone. “It has taken the researchers at Texas A&M over two years to successfully reproduce the copycat,” Westhusin said. Cloning research is new and scientists are hopeful of what developments may arise. “One of the main interests is to produce transgenic animals that have agriculturally or med ically beneficial traits,” said Dr. Marian Beremand, Texas A&M genetics professor. Some examples of these potential benefits include the development of disease resistant animals or an animal that pro duces compounds needed in medicine such as insulin. New AIDS vaccine ib. apply to m irimar id. rthe T drug xn an — not os recorded < ic added m : to launch th; >ort. report, the be unities ofopn ailable frotr i Afghanistan pt. 11 terrom ited States. ’d Stai I SEATTLE (AP) — A new vac cine that is perhaps the most close ly watched experiment in all of AIDS research is showing promise in early human testing, but researchers caution they are still years away from proving it works. The approach, called prime- >st, is highly effective in mon eys. Until now, scientists were . Unsure whether the same would be tn te in people. I Results released Tuesday at the 9th Annual Retrovirus Conference in Seattle suggest the immune sys tem response in people is identical to that in newly vaccinated mon keys, which are able to withstand exposure to the virus. I Experts believe a vaccine is the only way to stop the worldwide AIDS epidemic, which has already killed 20 million people and infect ed 40 million more. But the search has been frustrating, because the virus has evolved elaborate and effective strategies to elude the body’s usual defenses against microbes. Volunteers in the early-stage testing of Merck & Co’s experi mental vaccine have not been put to the crucial challenge of expo sure to HIV, and proving the vac cine does its job will require test ing on large numbers of people who are at risk of catching it through sex or drug abuse. Nevertheless, researchers said the new results are promising, because they raise the possibility that a vaccine can arm the body’s immune defenses to fight off HIV and prevent AIDS. “We are encouraged,” said Emini, head of Merck’s AIDS vac cine program. “Obviously, the big question is how effective this will be in preventing or mitigating infec tion. That will have to wait until we get into long-term studies.” Yearly treatment to deter osteoporosis AP — A single intravenous dose of medicine a year rather than a pill a day may be enough to prevent osteoporosis, the bone-thinning condition that leads to fractures and hunched backs, especially in women past menopause. The startling finding came out of a study of a drug called zoledronic acid, which is approved for use in cancer patients to stop calcium from leaching from the bones. It will be about five years before doctors know whether the drug really does prevent fractures, because the study in Thursday’s New England Journal of Medicine was only a one-year look at the medicine’s effect on bone itself. The manufacturer, which paid for the research, has already begun the much larger and longer studies. But doctors who treat osteoporosis — a disease that weakens the bones of more than 10 million Americans and threatens millions more — are excited by the pre liminary results. Dr. Felicia Cosman, clinical director of the National Osteoporosis Foundation, said the thought of a once-a- year treatment is mind-boggling. here before Iff uld be'transfer tying him as; I.S. war on ten.' ntries to hyp United Stal;- idition treaty. ;r Moinuddin f- Pearfs killers! bout a link lx Services wrong propat and community^ 1:57. p.m. iday through Frid? AMU-FM ollege Station / Bryan Prince Eye Care Michael Prince, O.D. TAMU Class of ‘94 • Eye Exams • Consultations • Glasses • Contact Lenses Now accepting TAMU Cigna Vision Plans Walk-ins welcome or call for an appointment 201 N. Main 822-2020 Bryan fax: 822-2021 ATTENTION All On-Campus Residents ALL current on-campus residents are required to complete the Housing Decision 2002 process to renew or cancel their housing for the fall 2002 - spring 2003 academic year. WHEN: March 4 (8 a.m.) - March 8 (5 p.m.) WHERE: On the Residence Life Homepage ( isWiiiiEii :ski nosi I Great snow, aprfts ski parlies, I live music & dancing.and outdoor tun in the sun with ail your friends. ‘Bring this ad during the montluDf March and get $10 off the purchase of one adult full-day lift ticket. Not valid March 12-14, 2001. TAOSfrl Reservations: 600-776-ini 'Not valid with other discounts or offers. No photocopies accepted. Expires 3/25/01. One coupon per customer. Texas a&m Battak >tour the world, save big bucks and get friendly with people your own age. contiki has 100 worldwide trips to choose from, australia from $55 a day! what on earth are you waiting for?!??!!! >where logo: > territory & outback 12 days from $715 > reefs & rainforest 17 days from $985 > beaches & reefs 14 days from $770 > fiji sailing adventure 5 days from $429 contiki VACATIONS to-1* see your campus travel agency visit