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To: grayfish who wrote (12)5/19/2005 7:43:53 AM
From: mikehunt2   of 154
 
Arrowhead Research Corporation Acquires Early Nanosensor Patent Portfolio
Thursday May 19, 7:00 am ET


PASADENA, Calif.--(BUSINESS WIRE)--May 19, 2005--Arrowhead Research Corporation (NASDAQ:ARWR - News; NASDAQ:ARWRW - News) announced today that it has acquired a suite of patent and patent applications covering nanosensor technology developed by Dr. Hermann Gaub, a Professor of Biophysics at the Center for Nanoscience at Ludwig-Maximilians University in Munich. Arrowhead and its subsidiaries now own or have licenses to over 250 U.S. and international patents and patent applications.
"Nanosensors are expected to radically change the way we diagnose disease. Now, we go to the doctor's office to have large samples of blood taken and then wait for days to get the results from a remote laboratory," said R. Bruce Stewart, President of Arrowhead. "With a nanosensor-enabled device, tests could be performed with a single drop of blood - and the results obtained within minutes."

The portfolio covers techniques for measuring biomolecular interactions by single-molecule force spectroscopy. As reported in "Science" in 2003, the devices are sensitive enough to detect single-base pair mismatches of DNA and have demonstrated significant improvement over state-of-the-art instrumentation. The patent applications also cover construction of parallel assays for placing millions of sensors on a chip. These patent and patent applications were acquired for a di minimus cash payment and are complementary to other patents to which Arrowhead already has rights.

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From: mikehunt26/6/2005 7:18:48 AM
   of 154
 
Arrowhead Announces License of New Nanotech Stem Cell Device from Stanford University
Monday June 6, 7:00 am ET


PASADENA, Calif.--(BUSINESS WIRE)--June 6, 2005--Arrowhead Research Corporation (NASDAQ:ARWR - News) announced today that it has exclusively licensed intellectual property from Stanford University for a nanotech device that controls the behavior of adult stem cells. Arrowhead will fund additional research involving the device at Stanford in exchange for the right to exclusively license and commercialize the technology.
The technology has been developed in the lab of Dr. Nick Melosh in the Materials Science Department at Stanford. The Melosh group is using arrays of nano-reservoirs on a chip to stimulate desired adult stem cell behavior. Melosh's team will conduct further research by collaborating with scientists and doctors at the Stanford Stem Cell Institute and the Lucile Packard Children's Hospital. Arrowhead has committed $600,000 to the project, with $110,000 funded upon signing and the remainder payable quarterly over the following two years.

Both embryonic and adult stem cells have the ability to become the cells of different tissues and represent a treatment for diseases such as neurological disorder, heart failure, and diabetes. Adult stem cells, which are less controversial from a political standpoint than embryonic stem cells, are less likely to generate immune reactions in patients and, therefore, could be better suited for tissue engineering than embryonic stem cells. Notwithstanding the potential of adult stem cells, however, there is no commercially available tool to enable scientists and doctors to precisely control their functions. "The solution we are pursuing is to build a device that can interact with the stem cell at the micro- and nanoscale," said Dr. Melosh. "For example, exposure to minute amounts of chemical at the appropriate time and place could be the key for guiding stem cells isolated from fat tissue to turn into cartilage or bone constructs."

"We are pleased to expand our outsourced R&D and commercialization program to Stanford," said R. Bruce Stewart, President of Arrowhead. "We believe nanotechnology is the key to unleashing the potential of stem cells. Ultimately, surgeons could use this product to grow heart tissue in the Emergency Room to replace damaged tissue resulting from a heart attack."

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From: mikehunt26/19/2005 6:32:14 PM
   of 154
 
Nanotech: Beaming In On Nano Gold
There's plenty of hype in nanotech, but cautious prospecting can pay off

Devotees call it the biggest thing since the Industrial Revolution. Nanotech, they say, promises to reengineer the man-made world, molecule by molecule, sparking a wave of innovation in everything from machines to medicine. Over the past three years, venture capitalists have poured some $900 million into the field -- few call it an industry yet -- while governments have invested many billions more in research & development over the past decade. "After biotech and the Internet, nanotech is the next place for growth," says John M.A. Roy, an analyst at WR Hambrecht + Co. Advertisement

Yet for investors, buying nanotech stocks is more black magic than science. There are only about 30 companies focused on nanotech listed on NASDAQ, and profits are scarce, making financial analysis more like guesswork. What's more, adds Roy, many of the players engage in research so complex and with such uncertain timelines that even other scientists have trouble valuing their innovations, let alone their business models. "On the science side, nanotech's for real: It will dominate the world for the next 50 years," says Darrell Brookstein, managing director of Nanotech Co., a San Diego consultancy and author of Nanotech Fortunes: Make Yours in the Boom, published this year. "But on the investment side, be careful."

So investors might keep in mind the old adage: In a gold rush, only the sellers of picks and axes are sure to profit. In the nano-rush, that would be the makers of microscopes and design software. Both FEI Co. (FEI ), in Hillsboro, Ore., and Veeco Instruments Inc. (VECO ), in Woodbury, N.Y., which make the powerful microscopes and energy-beam devices used to probe ultratiny structures, figure to grow with the industry. Plus, they already run sound businesses selling science lab instruments and chip-inspection devices. In San Diego, Accelrys Inc. (ACCL ) is a leading maker of the software tools that help scientists visualize how molecules interact.

To profit from actual nanotech products, the best bets may be companies with a diverse catalog of projects. Arrowhead Research Corp.'s (ARWR ) strategy is to fund university R&D -- now mostly at Stanford University and the California Institute of Technology -- in return for the rights to any inventions. The Pasadena (Calif.) company's projects include finding ways to use very tiny molecules to cut drug toxicity and developing new methods to make computer chips.

Countless more nano-products are brewing inside an estimated 1,300 or so startups. One way to invest in them is through Harris & Harris Group Inc. (TINY ), a NASDAQ-listed venture-capital firm that holds stakes in several market leaders. These include Nanosys Inc., which canceled a much-anticipated initial public offering last summer as the market fell; computer-memory developer Nantero Inc.; and Nanomix Inc., which is pursuing ultrasensitive sensors for industrial and medical markets.

The least risky route is to invest in the old-line technology giants that have big presences in nanotech. BASF (BF ), Dow Chemical (DOW ), DuPont (DD ), General Electric (GE ), Hewlett-Packard (HPQ ), IBM (IBM ), and NEC (NIPNY ) hold most of the basic nanotech patents. Established companies spent an estimated $3.8 billion on nanotech last year, making them the largest private funders of nanotech R&D, says Peter Hébert, CEO of Lux Research Inc., a New York market consultancy. Given their experience in bringing new technologies to market, corporate labs may dominate this sector, he adds. For investors, the downside is that any gains in nanotech will initially account for just a sliver of the blue chips' earnings and have a limited impact on their shares.

Any new nanotech IPOs are sure to unleash a fresh wave of hype, pulling up existing stocks. At the same time, the field remains so immature that sell-offs are sure to follow, as investors sort out incremental advances from market-changing innovations. Indeed, the few nano-enhancements already for sale, such as stainproof fabrics, highly durable paints, and lighter sports rackets, are just evolutionary, says Nanotech Co.'s Brookstein. "The revolutionary -- new types of materials, cancer treatments, and flat panel displays -- won't begin for another four to 10 years," he says. Till then, this very small technology will continue to inspire very big dreams.

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To: mikehunt2 who wrote (15)6/20/2005 11:25:36 AM
From: Will Lyons   of 154
 
TINY and ARWR are good ideas for a diversified investment but for those interested in specific nanos should look at CVV and two pick and shovel makers that are profitable: MFIC and SOTK.

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From: mikehunt26/21/2005 7:39:54 AM
   of 154
 
Arrowhead Announces Licensing by Subsidiary of RNAi Delivery Technology to Benitec
Tuesday June 21, 7:00 am ET


PASADENA, Calif.--(BUSINESS WIRE)--June 21, 2005--Arrowhead Research Corporation (NASDAQ:ARWR - News) announced today that its majority-owned subsidiary, Calando Pharmaceuticals Inc., has granted an exclusive worldwide license to Benitec Ltd. (ASX:BLT - News) for the combination of Calando's polymeric nucleic acid delivery technology with Benitec's RNA interference (RNAi)-based therapeutic for hepatitis C virus (HCV). The new technology created by this partnership represents an entirely new therapeutic approach to treating HCV, presently largely incurable and resistant to treatment. HCV is the most common blood-borne infection and the biggest cause of liver transplants in the United States. Calando will receive an upfront payment, milestone payments and royalties on revenue from this HCV therapeutic.
We are pleased to be working with Benitec," said R. Bruce Stewart, Arrowhead's President. "It has been estimated that the market for HCV therapeutics could approach $4 billion, and this collaboration represents the first step in executing our strategy in the RNAi therapeutics marketplace."

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From: mikehunt210/4/2005 7:54:56 AM
   of 154
 
Newly Published Results Demonstrate Potential of Arrowhead Subsidiary's Technology as a New Tool in Fight against Cancer
Tuesday October 4, 7:00 am ET


PASADENA, Calif.--(BUSINESS WIRE)--Oct. 4, 2005--A leading cancer research journal has published animal studies showing that technology being developed by a subsidiary of Arrowhead Research Corp. (Nasdaq:ARWR - News) is effective in treating metastatic cancer in mice.


The results, published in the October issue of Cancer Research, demonstrate that Calando Pharmaceuticals' proprietary delivery technology can deliver short interfering RNA ("siRNA") to targeted cancer cells and inhibit tumor growth in mice by silencing the target gene. In addition to serving as a potentially powerful new tool in the fight against a wide range of cancers, Calando's delivery system might also be used to treat a number of other diseases.

"Although the discovery of the siRNA mechanism has been heralded as a major breakthrough, using siRNA therapeutics to attack diseases and conditions that can only be treated systemically in an effective way has been problematic," said R. Bruce Stewart, President of Arrowhead. "Many diseases, including many forms of cancer, are caused by genes gone haywire throughout the body, not just in one discreet location. The ability to shut down problem genes selectively with siRNA throughout the body could provide a means to treat a variety of human diseases. These results demonstrate Calando's potential to unleash RNAi as a powerful new class of therapeutics."

As described in Cancer Research, Caltech and Children's Hospital Los Angeles investigators using Calando's delivery technology performed experiments on a mouse model of Ewing's sarcoma, a deadly form of metastatic cancer. One group of mice received a targeted formulation of siRNA and Calando's proprietary delivery technology and other control groups received either no treatment, or various combinations of correct and incorrect siRNA sequences, with and without Calando's proprietary delivery technology and tumor targeting ligands. The data show that only the targeted formulation of the correct siRNA sequence and Calando's delivery technology provided any anti-tumor efficacy. Additionally, the data demonstrate that Calando's technology does not result in physiological abnormalities or produce an immune response.

"The results from the Caltech-CHLA collaboration conclusively show sequence-specific anti-tumor effects and the molecular targeting to and within tumor cells by the delivered siRNAs," said Dr. Mark Davis, professor of Chemical Engineering at Caltech and founder of Calando. "This study shows that the polymer system can deliver siRNA therapeutics by a route of administration and at a dose amenable to use in humans."

Insert Therapeutics, Inc., another majority-owned subsidiary of Arrowhead Research, is expecting to begin human clinical trials early next year with a conjugate of Cyclosert(TM), a sister polymeric drug delivery technology developed in the labs of Dr. Davis at Caltech, with the small molecule anti-cancer compound camptothecin.

"In light of these results and our experience working with these nanomaterials at Insert, we expect a quick path to human clinical trials for Calando," Mr. Stewart said.

For more information on Calando and its technology, visit Calando's website at www.calandopharma.com

About Arrowhead Research Corporation

Arrowhead Research Corporation (www.arrowheadresearch.com) is a diversified nanotechnology company structured to commercialize products expected to have revolutionary impacts on a variety of industries, including materials, electronics, life sciences, and energy.

There are three strategic components to Arrowhead's business model:

Outsourced R&D Program: Arrowhead identifies patented or patent-pending technologies at universities or government labs and funds additional development of those technologies in exchange for exclusive rights to commercialize the resulting prototypes. Leveraging the resources and infrastructure of these institutions provides Arrowhead with a highly cost-effective development pipeline. Currently, Arrowhead is supporting efforts in stem cell technology, nanomaterials, nanoelectronics, and nanobiotools at the California Institute of Technology and Stanford University.
Commercialization Program: After prototypes have been sufficiently developed in the laboratories, Arrowhead forms or acquires majority-owned subsidiaries to commercialize the technology and provides the subsidiaries with strategic, managerial, and operational support. At present, Arrowhead owns majority interest in subsidiaries commercializing diverse technologies, including anti-cancer drugs, RNAi therapeutics, and compound semiconductor materials.
The Patent Toolbox: Arrowhead has acquired or exclusively licensed patents and patent applications covering a broad range of nanotechnology. The Company is actively seeking to add to this intellectual property portfolio.

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To: mikehunt2 who wrote (18)10/4/2005 7:55:42 AM
From: mikehunt2   of 154
 
Publication in Cancer Research Shows Potential of Therapeutic Gene Silencing for a Broad Range of Diseases
Tuesday October 4, 7:00 am ET


DUARTE, Calif.--(BUSINESS WIRE)--Oct. 4, 2005--Calando Pharmaceuticals Inc., a therapeutic RNA interference (RNAi) company and majority-owned subsidiary of Arrowhead Research Corporation (Nasdaq:ARWR - News), today announced that collaborators using Calando's proprietary siRNA delivery technology have published the first clear in vivo demonstration of sequence-specific gene inhibition in tumors from the systemic administration of targeted formulations of siRNA. The research, published in Cancer Research, represents a significant advance in the development of systemic RNAi therapeutics. Systemic delivery through the bloodstream enables RNAi therapeutics to target metastatic cancer located throughout the body, and raises the prospect for broad application of RNAi therapeutics to treat a wide range of cancers and other systemic diseases.


In the published research, Caltech and Children's Hospital Los Angeles investigators created a mouse model of Ewing's sarcoma that mimics the tumor localizations in humans and also provides for simultaneous, real-time bioluminescence imaging of the disseminated tumors by using human Ewing's sarcoma cells engineered to express luciferase. Two groups of 10 mice each received sham injections and naked anti-EWS-FLI1 siRNA, respectively, and three additional groups of 10 mice each received various siRNA sequences formulated with Calando's proprietary cyclodextrin-containing polymer siRNA delivery system: siRNA with an unrelated sequence to EWS-FLI1, anti-EWS-FLI1 siRNA and anti-EWS-FLI1 siRNA that did not contain the tumor targeting ligand. All injections were at 2.5mg/kg via the tail vein at normal venous pressure. The data show that only the targeted anti-EWS-FLI1 formulation provided any anti-tumor efficacy -- control sequences and removal of the targeting ligand eliminated the anti-tumor effects. Additionally, no abnormalities in IL-12 and interferon-alpha, liver and kidney function tests, complete blood counts or pathology of major organs were observed. Of major significance is that the cyclodextrin-containing delivery system does not produce an interferon response like those obtained from lipid delivery of siRNA even when published immunostimulatory motifs are included in the siRNA.

"The results from the Caltech-CHLA collaboration conclusively show sequence-specific anti-tumor effects and the molecular targeting to and within tumor cells by the delivered siRNAs," said Dr. Mark Davis, professor of Chemical Engineering at Caltech and founder of Calando. "This study shows that the polymer system can deliver siRNA therapeutics by a route of administration and at a dose amenable to use in humans."

"It is important to recognize that these results were achieved with the delivery of natural RNA sequences. No chemical modifications are necessary for siRNAs delivered with Calando's polymeric system," said John Petrovich, Chief Executive Officer of Calando Pharmaceuticals. "We believe this will give us an easier regulatory path, and possibly result in reduced off-target effects." He noted that the delivery system is currently very well-characterized, and that considerable progress had been made in advancing the cGMP scale-up and preclinical development of the polymer.

About RNAi

RNA interference, or RNAi, is a naturally occurring mechanism within cells for selectively silencing and regulating specific genes that is potentially the basis for a new class of therapeutic products. Since many diseases are caused by the inappropriate activity of specific genes, the ability to silence and regulate such genes selectively through RNAi could provide a means to treat a wide range of human diseases. The discovery of RNAi has been heralded by many as a major breakthrough, and the journal Science named RNAi the top scientific achievement of 2002, as well as one of the top ten scientific advances of 2003.

About Calando Pharmaceuticals Inc.

Calando Pharmaceuticals Inc. is a privately held biopharmaceutical company funded by Arrowhead Research Corporation and located in a City of Hope research building immediately adjacent to the main campus. Calando is using its proprietary technologies to design and create new, targeted siRNA therapeutics. Calando combines proprietary technologies in targeted polymeric delivery systems and siRNA design to create effective therapeutics. The company is pursuing this goal through its internal research and development and also through collaborations and partnerships with pharmaceutical and biotechnology companies. For more information, visit www.calandopharma.com.

Calando Technology

Calando's cyclodextrin-containing polymers form the foundation for its two-part siRNA delivery system. The first component is a linear, cyclodextrin-containing polycation that, when mixed with small interfering RNA (siRNA), binds to the anionic "backbone" of the siRNA. The polymer and siRNA self-assemble into nanoparticles of approximately 50 nm diameter that fully protect the siRNA from nuclease degradation in serum. The siRNA delivery system has been designed for intravenous injection. Upon delivery to the target cell, the targeting ligand binds to membrane receptors on the cell surface and the RNA-containing nanoparticle is taken into the cell by endocytosis. There, chemistry built into the polymer functions to unpackage the siRNA from the delivery vehicle. In addition to targeting tumors, the targeting of liver cells has also been accomplished in vivo. Using anti-FAS siRNA, liver targeted delivery from tail vein injections in mice are able to provide FAS gene inhibition like that observed from a high pressure tail vein injection that is not clinically relevant.

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To: mikehunt2 who wrote (18)10/4/2005 10:51:44 AM
From: Skywatcher   of 154
 
my home town with some GOOD news today....
CC

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From: mikehunt210/11/2005 7:06:41 AM
   of 154
 
Arrowhead Accelerates Capital Contribution to Insert Therapeutics as Nanotech Cancer Drug Heads toward Human Clinical Trials




--------------------------------------------------------------------------------
Tue Oct 11 07:00:08 2005 EST
PASADENA, Calif., Oct 11, 2005 (BUSINESS WIRE) --
Arrowhead Research Corp. (Nasdaq:ARWR), a diversified
nanotechnology company providing the missing link between lab and
marketplace, has accelerated its investment of an additional $3
million to majority-owned subsidiary Insert Therapeutics, Inc.
Insert's lead anti-cancer drug, IT-101, has achieved complete
remission of non-small cell lung cancer and Ewing's sarcoma, and
significant knockdown of other tumor types in preclinical results in
mouse xenografts, showing promise across a wide range of cancers. The
company is currently preparing to enter IT-101 into human clinical
trials at the City of Hope Comprehensive Cancer Center in Duarte,
Calif.
"We have continued confidence in the power of Insert's
technology," said R. Bruce Stewart, president of Arrowhead. "This
contribution satisfies our funding obligation and solidifies our 68.5
percent ownership in this subsidiary."
Insert Therapeutics controls a portfolio of U.S. and foreign
issued patents and pending applications covering therapeutics based on
linear cyclodextrin-containing polymers, which comprises Insert's
Cyclosert(TM) family of drug delivery polymers. IT-101 is a
combination of Insert's proprietary Cyclosert platform and the potent
anti-cancer compound camptothecin. Camptothecin has never been
approved for use in humans due to its insolubility, toxicity,
instability in human blood serum and poor pharmacokinetics, but
approved analogues of the drug, irinotecan and topotecan, have
demonstrated $1 billion in reported annual sales worldwide. In the
mouse xenograft studies against a variety of cancer types,
camptothecin enhanced by conjugation with Cyclosert proved to be more
effective at lower doses compared to irinotecan.
Cyclosert was invented in the Caltech lab of chemical engineering
professor and Insert founder Dr. Mark Davis, who used "molecular
design" to create Cyclosert. This methodology involves the design and
construction of functional materials using molecular building blocks.
For more information about Cyclosert and Insert's preclinical
results, visit Insert's website at www.insertt.com.
About Arrowhead Research Corporation
Arrowhead Research Corporation (www.arrowheadresearch.com) is a
diversified nanotechnology company structured to commercialize
products expected to have revolutionary impacts on a variety of
industries, including materials, electronics, life sciences, and
energy.
There are three strategic components to Arrowhead's business
model:
-- Outsourced R&D Program: Arrowhead identifies patented or
patent-pending technologies at universities or government labs
and funds additional development of those technologies in
exchange for exclusive rights to commercialize the resulting
prototypes. Leveraging the resources and infrastructure of
these institutions provides Arrowhead with a highly
cost-effective development pipeline. Currently, Arrowhead is
supporting efforts in stem cell technology, and nanosensors at
the California Institute of Technology and Stanford
University.
-- Commercialization Program: After prototypes have been
sufficiently developed in the laboratories, Arrowhead forms or
acquires majority-owned subsidiaries to commercialize the
technology and provides the subsidiaries with strategic,
managerial, and operational support. At present, Arrowhead
owns majority interest in subsidiaries commercializing diverse
technologies, including anti-cancer drugs, RNAi therapeutics,
and compound semiconductor materials.
-- The Patent Toolbox: Arrowhead has acquired or exclusively
licensed patents and patent applications covering a broad
range of nanotechnology. The Company is actively seeking to
add to this intellectual property portfolio.

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From: mikehunt210/14/2005 3:23:18 PM
   of 154
 
A TINY Alternative in Nanotech (from Mootley fool)
fool.com 

By Jack Uldrich
10/14/2005


Until recently, investors looking for a "pure play" investment in the field of nanotechnology had one choice: Harris & Harris(Nasdaq: TINY) -- a publicly traded venture capital firm that owns small equity stakes in more than a dozen privately held nanotechnology start-up companies. Another company, however, has recently begun making some noise, and investors interested in nanotechnology are encouraged to pay it some attention. That company is Arrowhead Research(Nasdaq: ARWR). It's headed by industry veteran R. Bruce Stewart, who founded Acacia Research, which brought Acacia Technologies(Nasdaq: ACTG) and CombiMatrix to market.

Arrowhead, like Harris & Harris, focuses almost exclusively on nanotechnology, but its approach is quite distinct from TINY's and carries with it the potential for greater rewards as well as greater risks.

Arrowhead invests in promising nanotechnology research at leading universities -- primarily the California Institute of Technology at this time -- and, in exchange for the right to license certain intellectual property, will seek to translate that nanoscience research into real businesses.

Few knowledgeable investors question whether there is promising nanotech-related research taking place in university labs across America. This is, in part, thanks to Uncle Sam's willingness to generously underwrite the field to the tune of almost $1 billion a year. There is disagreement, though, over the issue of whether much of this research is yet ready for the commercial marketplace. A number of promising nanotech companies have set out for commercial gold in years past only to end up shipwrecked on the cruel, unforgiving shoals of today's hypercompetitive economy.

Arrowhead makes strategic investments at the university level. But rather than rush that technology to the market, it instead allows it to cook a little longer in the labs. When the technology is more mature or a viable product is ready to generate revenues, the company's seasoned management team will either create a market-driven subsidiary, license the intellectual property, sell its interest to a larger company, or guide it to an IPO.

This strategy allows Arrowhead to snatch up valuable intellectual property long before any venture capital firm or large corporation would consider investing. In this sense, Arrowhead's approach fills a much-needed gap between basic research (in which the private sector is loath to invest) and the venture capital market, which often extracts an unusually high price in return for its investment.

The risk of Arrowhead's strategy is, of course, that the basic research it's buying is still "basic." No one knows for sure whether it will ever amount to anything. The flipside is that because of its early entry investment, Arrowhead -- unlike Harris & Harris and other venture capital firms -- ends up owning a significantly larger percentage of its subsidiary companies. This not only gives Arrowhead's management a much greater claim of any future profits, but it also ensures a higher degree of managerial control. Of the four subsidiaries it has created, Arrowhead owns more than 50 percent of each.

To date, management appears to be highly selective with its investments. The company claims it is interested only in technology or products that can generate between $300 million and $1 billion annually in revenues, and it typically makes no more than an initial investment in the neighborhood of $200,000 -- although that figure has grown as high as $2 million-$5 million in a few select instances.

Currently, Arrowhead has four subsidiaries. The first is Insert Therapeutics, which is developing a drug-delivery platform that uses "molecular design" -- technology that puts every atom and molecule exactly where it needs to go in order to achieve the best result. So far, Insert's leading drug platform has shown excellent promise in animal trials in transporting cancer-fighting agents to its target with high precision and low toxicity. The company is preparing to enter its lead anti-cancer drug, IT-101, into human clinical trials in early 2006. Arrowhead has invested $5 million in the company and owns 68.5% of its shares.

The second subsidiary Arrowhead has created is Calando Pharmaceuticals, of which it has invested $2 million and owns 52%. Calando is another nanotech-related start-up and is developing a proprietary technology that can deliver short-interfering RNA (siRNA) to target cancer cells and can inhibit tumor growth by silencing the target gene. The company's technology has also been demonstrated as being effective in animal trials and is expected to begin human trials sometime in 2006.

Aonex is Arrowhead's third subsidiary, and it is seeking to create semiconducting nanoparticles for use in everything from LED lighting to thin, flexible solar cells. The areas of flexible solar cells and LEDs are both ripe with promise -- and I am bullish on nanotechnology's playing an integral role in their respective development -- but here, too, Aonex faces an uphill battle. GE, Philips, and Siemens (among others) are also placing big bets on these fields.

The final subsidiary is called NanoPolaris. It is an intellectual property platform covering carbon nanotube technologies. Little more is known about this "platform" at this time, but company officials promise that more information is coming soon.

Each subsidiary has some promise. However, the field of nanotechnology is now so vast that each faces significant competition from Fortune 500 companies and private start-ups alike. For instance, Insert Therapeutics, whose most promising platform involves the targeting of a variety of cancers, faces competition from any number of companies, including GlaxoSmithKline(NYSE: GSK) and pSivida(Nasdaq: PSDV). Both are further along in their clinical trial processes, and if either is successful, Insert's prospects will wither.

The same is true of Calando. Several public companies, including Alnylam(Nasdaq: ALNY) and Sirna Therapeutics(Nasdaq: RNAI), are aggressively pursuing the development of RNA interference therapeutics.

Lastly, anyone who has followed the field of nanotechnology knows that carbon nanotubes are among its most promising materials. The downside is that the field also has an almost endless list of competitors -- including Japanese industrial giant NEC, which has made noise in the past year about enforcing its original carbon nanotube patent. Without knowing the details of the NanoPolaris' IP platform, it is impossible to surmise the strength of Arrowhead's position or adequately assess its strategy. It may have the equivalent of a winning lottery ticket, or it may just be holding a lot of worthless paper.

Arrowhead has a market cap of $82 million, with $25 million cash on the balance sheet. It also has few revenues and no licensing agreements. From this perspective, then, it looks very pricey. It does, however, hold some promising intellectual property and technology. At its current burn rate, it has almost another two years before management would have to go back to investors to seek additional cash.

So does the company make for a good investment? The answer depends on your penchant for risk. If it is high, I would say yes. If it is average or low, I would recommend staying away from the stock for now. (As always, investors need to also be aware that small-cap companies this small often face great volatility).

Either way, here's what investors should look for moving forward. First, Insert has stated that it'll begin human trials in early 2006. Investors are encouraged to watch whether management meets this milestone. Investors should also look for the same from Calando. In both cases, the initiation of human trials doesn't guarantee success because phase 1 drugs have historically high failure rates. But moving into clinical trials does suggest that the technology is showing promise and that it is at least on the right track.

Investors are also encouraged to look for signs of corporate partnerships for Aonex -- especially in the areas of LED lighting or flexible solar cells. Such partnerships will provide some tangible proof that its technology is being taking seriously by the big players -- which is ultimately what Aonex will need to become a commercial success.

The same can be said for Arrowhead. Technology and intellectual property, in and of itself, are nice, but they don't pay the bills. Arrowhead's strategy has merit, but it needs to bring real products to the commercial marketplace before it can be deemed a success.

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