Breast Cancer-Killing The Last Cell
Transcription
Breast Cancer-Killing The Last Cell
S a m u e l Wa x m a n C a n c e r R e s e a r c h Fo u n d at i o n REP RT Spring 2006 Breast Cancer-Killing The Last Cell UNDERSTANDING STEM CELLS AND DIFFERENTIATION TUMOR CELL cells can produce a whole new tumor. CANCER STEM CELL “In many tissues a small number of stem cells give rise to a larger number of proliferating cells and then the proliferating cells generate cells that differentiate and form the final tissue,” says Dr. Neel, who is also 1. Original tumor 2. After treatment 3. Tumor regrows But, if treatment can be tailored to differentiate and kill cancer stem cells, they may destroy the tumor permanently. Professor of Medicine at Harvard Medical School. “To give you an idea, in a mouse, total bone marrow has about 20 million cells. Only about ten thousand of those are stem cells. Yet one of those cells, if purified, Illustration by Barbara Taff could give rise to the entire bone marrow. “Since the tumor stem cell has infinite self-renewal capability, it can just grow back,” says Dr. Neel.“And it 1. Original tumor Source: Science News 2. After treatment 3. Tumor shrinks, no regrowth can grow back with more mutations which make it more difficult to kill.” Dr. Neel and his colleagues are trying to demon- A t the age of thirty-six, a friend we’ll call strate that what has been learned about tumor hier- Sandra needed a lumpectomy and radia- archy in research on leukemias also applies to breast tion for breast cancer. Her recovery was cancer. Both mouse and human models are helping uneventful; she called her cancer “a thing of the past.” him and his coworkers toward that goal, and to That was twenty-three years ago. Recently, a recur- develop ideas about how to target tumor stem cells rence necessitated a mastectomy. This time Sandra’s selectively, with drugs. “The ultimate goal is to use recovery has been difficult, and now her doctors are biopsy to identify tumor stem cells and determine “discouraged.” Unfortunately, her story is familiar. their self-renewal and survival characteristics,”Dr. Neel (continued on page 7) Researchers whose goal is to eradicate breast cancer the first time around are looking for the reasons Sandra and so many other women have breast cancer recurrences after a long period of health. Building on work done by John Dick with leukemias in the late 1990s, Dr. Ben Neel, the Director of the Cancer Biology Program at Beth Israel Deaconess Inside 2 From the Chairman & Scientific Director 3 Research Highlights 4 Fundraising Events 6 News Briefs Medical Center in Boston is investigating the idea that a small population of cells is responsible for tumor formation. In the past, before the molecular age in cancer biology, many scientists believed all tumor cells were more or less the same. Now more researchers think that the vast majority of cells help cancer grow and spread but just a few chemotherapy-resistant stem 8 Special Events Calendar Research Highlights s a m u e l wa x m a n cancer research f o u n d at i o n OFFICERS OF THE BOARD CHAIRMAN Michael Nierenberg 85% of all funds raised will go directly into cancer research. VICE-PRESIDENTS Gary Jacob J. Jay Mautner Dena K. Weiner Samuel Waxman, M.D. Michael Nierenberg From the Chairman & Scientific Director Dear Friends, Y defeat breast cancer. Although more women will get breast cancer, better education leading to earlier diagnosis and 2006 is off to an incredible start! ication to our mission, Dr. Ethan Dmitro- coordinated treatment by surgeons, med- Our “Collaborating for a Cure” Benefit vsky has joined Dr. Jonathan Licht as Asso- ical and radiation oncologists and genetic raised a record breaking $2.8 million. ciate Scientific Director. Dr. Dmitrovsky is advisors is leading to a higher cure rate and Because of your generosity we continue the Andrew G. Wallace professor at Dart- a decrease in mortality. This achievement to fund vital research programs all over mouth Medical School, and the Chairman has required billions of dollars, worldwide the world so that one day our children of the Department of Pharmacology and innovative research, government commit- can live in a world without cancer. Toxicology. He also serves as a member of ment and women’s advocacy pressure. As you will read in News Briefs and Milestones, we’ve made significant tific Advisory Board. How then does a small foundation such as SWCRF contribute to this massive com- progress in treating leukemia and other By this time next year, our forms of blood malignancies. We also researchers will be able to log on to a As you will read in this newsletter, the report on two breakthroughs in science: secure site and share their latest findings. SWCRF is focusing on the tragedy of late new and specific treatments of mel- What makes our Foundation unique is its recurrence of breast cancer due to dormant anoma and lung cancer and basic research insistence that our researchers collabo- and cancer stem cells. Dormant cancer cells in breast cancer stem cells which will rate. As grants are awarded only upon are difficult to detect, treat and can revert to result in saving more lives in the not-so- proof of this collaboration, this site will aggressive growing tumor-forming cells. distant future. bring us to a new level of SWCRF scientists have found a specific This year, we will continue to expand our research in the fields of Breast, Lung, Prostate, Liver and Pancreatic Cancer, Leukemia and Lymphoma, Melanoma, Aberrant Gene Expression and Preventing Metastasis. We are just now receiving applications for our 2006 granting cycle. Not only has this impressive pool grown in size but it also contains applicants from top research institutions, one of which includes a Nobel Laureate. Most importantly, 85% of all funds raised will go directly into cancer research. To sustain this level of activity and ded- 2 the Lance Armstrong Foundation Scien- greatly enhanced communication. To add to this year’s excitement, we have just hired a new Director of Development, Mark Silverstein. He joins us with 15 years of solid fundraising experience, most recently with The Skin Cancer Foundation and the American Red Cross. We look forward to announcing his great achievements in future newsletters. All this, of course, could never be possible without your support, energy and commitment. For this we are enormously grateful. – Michael Nierenberg SECRETARY Laurie L. Schaffran TREASURER Gary Gladstein es, we are winning in the battle to mitment to beat breast cancer? signal to block this reversion, and inhibitors have been developed which may become drugs that can be used to kill the dormant cancer cells. A close cousin to the dormant cancer cell may be the breast cancer stem cell, the mother lode that gives birth to each tumor. The SWCRF is funding outstanding work to solve the riddle of the breast cancer stem cell and expose its Achilles heel, so that a specific treatment can be developed. The SWCRF breast cancer program is expanding. It includes research projects to identify nonfunctioning genes that cause (continued on page 7) Max Wicha, Committed Cancer Sleuth BOARD OF DIRECTORS Lawrence Altman Philip T. Brudner Peter Claman Robert E. Fischer Arminio Fraga Judi Gladstein Eric Goldstein Clifford Greenberg Linda Herman Mary Kantor Costas Kondylis Leslie Elliot Krause Abner Levine Mildred Levine Shumer S. Lonoff* Thomas Marano Richard Mazer Alfred J. Seaman† Edward Sheldon Howard Shlafmitz Tony M. Shogren Clifford Sterling Spencer Waxman David T. Workman*† HONORARY BOARD Maureen Cogan Martin L. Coyne Susan W. Rose Selma Ruben* Alan P. Safir† Joan A. Safir† Edwin C. Scheurer Michael A. Wiener Zena Wiener SCIENTIFIC DIRECTOR Samuel Waxman, M.D. ASSOCIATE SCIENTIFIC DIRECTOR Ethan Dmitrovsky, M.D. Jonathan Licht, M.D. SCIENTIFIC ADVISORY COMMITTEE Franco M. Muggia, M.D. Frank J. Rauscher III, Ph.D. I. Bernard Weinstein, Ph.D. Max S. Wicha, M.D. Stuart Yuspa, M.D. EXECUTIVE DIRECTOR Merle Duskin Kailas †Chairman Emeriti *deceased NEWSLETTER WRITER/EDITOR Carol Ardman NEWSLETTER DESIGNER Barbara Taff D r. Max Wicha, a founding member of the SWCRF Advisory Committee and distinguished cancer researcher, recently defended his cancer stem cell hypothesis in an article published in the journal of the American Association for Cancer Research. He is committed to this idea, as he is to all the activities he believes may lead to the discovery of new approaches and cures. Borrowing a favorite analogy to illustrate his belief that breast cancer stem cells exist and must be targeted, Photo by Elsa Ruiz The stem cells are really the root of the plant, and what we’ve been doing is essentially using some herbicide that just kills the leaves. he brings a complex idea down to was so much opportunity,”he says.“It’s earth. “The stem cells are really the turned out to be true. It’s amazing, the root of the plant, and what we’ve been increase in our knowledge, particu- doing is essentially using some herbi- larly over the last decade.” cide that just kills the leaves,” he says. At the same time, he has always “The roots keep regenerating the enjoyed being in the clinic.Taking care plant. If you have two agents to kill the of patients is important to him. “They roots and the leaves, you’ll get rid of have a serious problem and I get to the cancer faster.” help them out at a crucial point in Cancer has been Dr. Wicha’s their lives,” he revealed. That’s one abiding interest for much of his career. reason, he says modestly, that it was a “I thought research in cancer was great opportunity to be able to found going to have the most impact on the cancer clinic he has headed for the patients.Treatments were so poor and past twenty years at the University of we knew so little about cancer. There Michigan Cancer Center in Ann Arbor. 3 8th Annual “Collaborating for a Cure” Benefit Dinner Raises Over $2.8 Million Our many thanks to the companies and individuals who have made the “Collaborating for a Cure” Benefit Auction and Dinner such a special event. ore than 800 people attended our M 8th annual gala raising a record $2.8 million. Our evening began with entertainment by the up-and-coming band Sam Winch, followed by a sumptuous Fundraising News dinner and a live and silent auction. After dinner, the Counting Crows treated our guests to an extraordinary performance. The evening was a powerful display of the energy and commitment of our supporters as collaborative partners in the search for a cure. Dr. and Mrs. Samuel Waxman Charles Schaffran, Meryl Sherman, Kenneth Sherman and Shelly Levine Janet Lipman, Elin Nierenberg, Julie Assael and Amy Kuriloff Judi and Gary Gladstein Steve and Karen Shapiro David Cantor and David Lavipour Susan and Gerry Deitchman Jonathan Licht and Ethan Dmitrovsky, Associate Scientific Directors Rebecca Silver, Michael Nierenberg and Kristin Sterling Michael Nierenberg auctioning Counting Crows’ guitar Adam Duritz, Counting Crows Sam Winch Absolute Asia Jonathan Adler Aerosmith Jeffrey Altman Antony Todd Ken Aretsky Ark Restaurant The Art of Shaving Auberge Resorts Barcelona Restaurant Group Belle Fleur Berger's Deli Penny and Steven Beberman Big Apple Circus Bigelow Pharmacy Bill Blass, Ltd. Blue Star Jets The Brandy Library Sir Richard Branson Brite Smile Bruce Brittain Brody Dermatology Bryant Park Grill Bulgari byRobin Bryant & Cooper Steakhouse Canyon Ranch Health Resort Carnegie Club at Skibo Castle Cohen’s Fashion Optical Cookies by Miriam David Yurman davidburke & donatella Harlan DeBell Jonathan and Karen Duskin Dynasty Chinese Restaurant Eleanor Leonard Associates Ellen Maruca Makeup Salon Jules Epstein Equinox Ken Fish Jeffrey Fontaigne Judi Gladstein Golf Digest Gramercy Tavern Alyssa and Cliff Greenberg Grey Goose Hal Prince Music HBO Dr. Stuart Hershon David Hinkelman Bret Hirsh Hirshleifer’s Daniel Hoffman Il Mulino Il Postino Isobel O'Neil Studio Workshop Inn at Palmetto Bluff Italian Wine Merchants Jeffrey New York JimLar Joan Smith Flowers Jovia Joyva Corp. Just Lauren The Katz Family Kayser – Roth Corp. Kimara Ahnert Kitchen Kabaret Steven Kramer Kramer Photography Kyros Furs La Grenouille La Masseria Stephen Laffredo Robin Lathrop The Laurel Group Lauren Anne Designs Scott Lawrence Le Bernardin/Eric Ripert Avery Lipman Longchamp The Los Angeles Lakers Magnolia Flowers and Events Magnum Sand Point Shop MANE USA Marc Jacobs Marie Belle Chocolates Charles Masson Masterpiece Printers Nobu Matsuhisa Matteo's MBF Clearing Corp./ Mark Fisher MD Skincare Melarosa Florist Miho Kosuda, Ltd. Miller Brewing Co. Myriad Restaurant Group New Jersey Nets New York Mets New York Knicks New York Yankees New York City Opera Elin & Michael Nierenberg Nobu Nubest Salon and Spa Oasis Day Spa One Model Management/ Scott Lipps Outback Steakhouse Palm Restaurant Paragon Full Service Salon Party Poopers Patroon Marci & Glenn Pere Philadelphia Flyers Philadelphia Phillies Port Beer Distributing Company Razzanos Renny and Reed Restaurant Associates Revlon, Inc. Satovsky and Associates Sephora Deborah & Howard Shlafmitz The Shoe Box Cynthia and Tony Shogren Showtime The Silver Family SKIN Skip Barber Racing School Andrew Sloves Southampton Jewelers The St. Regis Hotel Stefans Florist StoneKelly Talon Air Ted Gibson/FAME, Inc. Katherine Tess Thirteen/WNET TLC Meats/ Mim Aronson Tom James Transitions The Tribeca Film Festival Tribeca Grill Trish McEvoy Fragrance Twin Farms Dr. Michael Tyner US Mills, Inc. Uzca Van Cleef and Arpels Valerie Wilson Travel Warner Brothers Records Marion & Dr. Samuel Waxman White on White Debbie and Richard Wilpon Debra J. Wattenberg Karen Weinberg Workman Publishing Zawacki Dance and Workout Laurie Zeller The foundation would like to thank our Event Chairs Elin & Michael Nierenberg and the Benefit Committee: Penny & Steven Beberman, Dale & Peter Claman, Lauren & Brad Egna, Carol & Mark Feldman, Judi & Gary Gladstein, Alyssa & Clifford Greenberg, Linda & Dennis Herman, Linda & Gary Jacob, Mary Kantor, Jodi & Marc Kaplan, Costas Kondylis, Marcia & David Lavipour, Mildred & Abner Levine, Amy & Thomas Marano, Jill & J. Jay Mautner, Marci & Glenn Pere, Laurie & Charles Schaffran, Deborah & Howard Shlafmitz, Juliette & Larry Silver, Kristin & Clifford Sterling, Nancy and Craig Overlander 4 Gary and Linda Jacob with Linda and Dennis Herman Steve Siegel with Joanne and Marc Florin C. Hugh Hildesley, Auctioneer Bettina & Spencer Waxman, Dena K. Weiner & David Rozenholc Event Photos by © Rebecca Weiss Photography 5 Research News Briefs Research Progress on Cancer Dormancy Milestones 2005 Breast Cancer Basic Research – Mechanisms Involved in Cancer (continued from front cover) says.“There are lots of possible ways to with the proper tool kit, may adapt proceed (with therapies) once one can (become dormant) and resume growth reproduce or isolate these cells. And later instead of dying,” says Dr. Aguirre- there are lots of questions. One is, if Ghiso, who is Assistant Professor in the New Studies on Cell Survival and Metastasis there are such tumor stem cells, are Department of Biomedical Sciences in Discovery of a switch that allows cancer cells to become both dormant and chemotherapy resistant they marked by the same markers in the School of Public Health. preventing them from dividing to form metastases. In 2005, Dr. Albert Baldwin, University of North Carolina School studying two proteins – integrin and urokinase – that of Medicine, reports that cellular factor NF-kappaB, when interact with one another starting a cascade of events that activated in many cancers, provides signals for cell survival Discovery of the hPNPase gene, a regulator of normal and cancer cell differentiation and senescence leads to cancer cell growth, Dr. Ossowski pinpointed the site and tumor cell migration and metastasis. His studies indi- In the University at Albany-SUNY, make up only about 1%-10% of the on the urokinase receptor to which the integrin binds, initi- cate that standard cancer therapies further activate this NQ01 serves as a gatekeeper for protein removal, a new cancer specific target New York, Dr. Julio Aguirre-Ghiso, and total cells in a breast cancer tumor, may ating the cascade. Now, using unbiased screening and the factor, blunting their effectiveness. During the past year Dr. graduate student Sharon Sequeira are be relevant to treating it and other can- collaboration of a computer biologist, 100,000 compounds Baldwin has shown that one regulatory protein in the NF- applying their knowledge of a cers. They have identified a pathway are being searched for those that can break the bond of kappaB pathway (IKKkappa) controls growth and survival pathway discovered to protect head called NOTCH that these tumor stem these two proteins. mechanisms found in many cancers. He is working to and neck cancers from chemotherapy- cells need for survival. Within months, induced killing to breast cancer using a drug developed by Merck to Dr. Liliana Ossowski, Mount Sinai School of Medicine, reports progress on the goal of forcing cancer cells that have spread from the primary tumor into distant organs into dormancy, obtain an inhibitor of this pathway to test in models. In Lung Cancer Clinical Trial for EGFR Resistant Cells Report of a set of genes that separates pre-liver cancer from liver cancer Pre-Clinical Advances approximately 10% of non-small cell lung cancers harbor specific activating mutations within the epidermal growth factor receptor (EGFR) gene. Lung cancer patients with EGFR mutations respond rapidly and dramatically to specific EGFR inhibitors Gefitnib (Iressa) and erlotinib (Tarceva). This has resulted in significant extension of life. However, relapse can occur due to drug resistance. In Dr. Settleman’s lab, a distinct class of EGFR inhibitors has been demonstrated to overcome some secondary drug resistance mechanisms in tumors. Clinical trials will soon be conducted with lung cancer patients who relapsed on Iressa or Tarciva. All this groundwork is leading to new started work on that last year.” To treatments for real people like Sandra. speed the research, he is also investi- Dr. Max Wicha and his group at the Uni- gating ways to shorten the wait for versity of Michigan were the first to tumor stem cells to grow in the lab. show that stemlike cells, though they clinical trials new compounds are being tested to deter- Discovery of a novel target for Borte- studies.They found that normal breast target these cells, Dr. Wicha and collab- mine if they work synergistically with chemotherapy or zomib, useful in treating lymphoma and cells use this pathway – the endo- orators will conduct a clinical trial in radiation in blocking NF-kappaB activation. breast cancer plasmic reticulum stress pathway – to 100 patients in Michigan, at the Baylor trigger death of cells if their surround- College of Medicine in Texas, and the ings are not appropriate and to pre- Dana Farber Center at Harvard. Report that inhibitors that block NF-kB enhance the effect of chemotherapy Dr. Jeffrey Settleman, Harvard University, has shown that different tumors of the same type? We Understanding Drug Interaction and Tumor Suppression Yosef Shaul, Weizmann Institute of Science, reports that his vent uncontrolled growth. But in Dr. “For years Sam Waxman has been Aguirre-Ghiso’s lab, some breast talking about differentiation therapy,” Discovery that arsenic trioxide may be effec- cancer cells use this pathway to says Dr. Wicha.“Now a variation of that tive in treating other forms of leukemia and become dormant instead of dying. is exactly what we need for some stem and radiation myelodysplastic syndrome “You can draw a very long parallel to cells. One reason we can’t kill them is nature. Sometimes when plant seeds they don’t differentiate normally into aren’t in proper soil or are nutrient other cells that lose the self-renewing deprived, they may die or remain dor- properties. If we could make the stem Clinical Advances mant for years and then germinate. cells differentiate, we could prevent Current chemotherapy induces stress the cancers altogether.” Discovery of a new distinct class of EGFR in cancer cells and those equipped lab has discovered a protein degradation pathway that is amenable to pharmacological manipulation. In this pathway, certain proteins are degraded “by default” by cellular degradation complexes called the 20S proteasomes. Some proteins degraded by this pathway are directly relevant to cancer, such as tumor suppressor protein p53. Another protein, NQ01, associates with 20S proteasomes, Discovery of inhibitors that selectively kill melanoma cells with the B-Raf mutation It’s just a question of time. inhibitors effective in lung cancer binds to and protects proteins from degradation. DegradaDemonstration that combining arsenic Scientific Director’s Message NQO1; protein levels can also be raised with drugs that with Gleevac is effective in treating the (continued from page 2) increase expression of NQ01. The lab is currently working aggressive phase of chronic myeloge- abnormal differentiation and contribute to the development of breast cancer. In addi- toward deeper understanding of this system. nous leukemia tion,other gene expressions unique to breast cancer are being studied for the purpose tion of a protein can be induced with drugs that inhibit of developing therapies specific to this serious medical problem. Our investigations 6 (If you would like more information on into breast cancer also relate to other forms of cancer, since we are examining mecha- these published articles, please contact nisms which characterize cancer cells in general. Thus, the SWCRF has a well-coordi- us at: [email protected]) nated, collaborative breast cancer program. With your help our work will continue to grow in scope and discovery. – Samuel Waxman 7 HOLD THE DATES: Special Events Calendar 2006 Monday, May 22nd, 2006 Monday, October 23rd, 2006 24th Annual Golf Tournament Brae Burn Country Club David T. Workman Memorial Award Ceremony Come win the $1 Million prize for a “hole in one” New York Yacht Club Saturday, July 8th, 2006 Thursday, November 30th, 2006 3rd Annual Hamptons Happening Gourmet Tasting Stations and Silent Art Auction “Collaborating for a Cure” Benefit Dinner Silent and Live Auction On Georgica Pond, Wainscott Help us keep costs down, please send your email address to [email protected] PERMIT NO. 938 www.waxmancancer.org Tel: 212-241-1760 Fax: 212-426-2273 1150 Fifth Avenue, New York, NY 10128 Samuel Waxman Cancer Research Foundation NEW YORK, NY PAID U.S. POSTAGE NON-PROFIT ORG.