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TODAY’S HEADLINES:

• Stent maker IDev Tech raises $25M (VentureWire)
• Xytis gets $15M for brain-injury drugs (VentureWire)
• Diagnostic maker Iris Biotech plans to go public, launch breast-cancer test (Edgar)
• RiverVest Venture Partners raises $75M life-science fund (release)
• Concentric Medical names Maria Sainz CEO (release)

[Note: I'm a little sad to announce that this will be my last life-science briefing at VentureBeat, although with luck, it won't be the end of my time here. Starting Monday, I'll be blogging regularly on the drug industry and healthcare over at BNET Industries, a new CNET venture, so drop by if you can. (Preparing for that move is the main reason non-briefing posts have been scarce recently.) I still hope to post here occasionally as well, since covering below-the-radar startups has been a blast, and I'm not ready to give it up quite yet.

It's been a great year -- my first VentureBeat post was on April 3, 2007 -- and I want to thank Matt for the opportunity to join you here, and all our regular readers and commenters for your time and your insights. As journalists, we're only as good as our sources and readers, and you guys have helped in countless ways to make me look much smarter than I really am. --D.P.H.]

Stent maker IDev Tech raises $25M – IDev Technologies, a Houston medical-device startup, raised $25 million in a third funding round, VentureWire reports. The company is developing a new type of stent for use in propping open the liver’s bile ducts .

The company’s existing investors, a group that includes Bay City Capital, Heron Capital, PTB Sciences and RiverVest Venture Partners, provided the funding. IDev had previously raised $24 million, according to VW.

Xytis gets $15M for brain-injury drugs – Irvine, Calif.-based Xytis, a biotech focused on disorders of the central nervous system, raised $15 million in an extension of its second funding round, VentureWire reports. Its backers included Atlas Venture, CDC Innovation, Sanderling Ventures and Ventech.

The company says it was founded in 2005 from the merger of Xytis Pharmaceuticals and Remergent. (Sounds more to me like Xytis swallowed Remergent, but they’re free to describe it however they’d like.) Its lead drug candidate, XY2405, blocks a cellular protein called the Bradykinin B2 receptor, a signaling molecule thought to promote inflammation.

Xytis is testing the drug as a potential treatment for traumatic brain injury; the molecule is currently in mid-stage, phase II trials. The company is also testing an antidepressant in early-stage trials.

Xytis raised half the money last August, then received the second $7.5 million in April, the company told VentureWire. It has previously raised $24.5 million in its current incarnation, and its “predecessor companies” pulled in $6.5 million.

Diagnostic maker Iris Biotech plans to go public, launch breast-cancer test – Santa Clara, Calif.-based Iris Biotechnologies, a developer of molecular diagnostic tests, is preparing to go public, VentureWire reports. The company plans a small offering on the OTC Bulletin Board — if I’m reading its latest SEC filing correctly, its existing shareholders will raise about $1.1 million, with no proceeds headed to the company  — and hopes to launch a breast-cancer test later this year.

Iris plans to use chips to measure gene activity in breast cancer, with the hope of predicting the odds that a surgically removed tumor will recur and, eventually, helping patients and doctors customize cancer treatment from an early stage. The company claims that it will be competitive with Genomic Health and Agendia, two companies with similar tests for predicting breast-cancer recurrence.

There’s something a little odd about Iris’ disclosures in the SEC forms, though. Iris doesn’t describe its technology, the genes it will test or how it settled on them in any detail, and spends almost as much time talking about its database of patient information and related computer technology as it does about its tests. While it may consider some or all of that information a trade secret — and disclosure requirements may well be looser for such a small offering — it’s still kind of unusual for a startup to ask outside investors to put up their money essentially on faith.

TODAY’S HEADLINES:

• Luminous Medical raises $24M for automated glucose monitoring (release)
• Alimera Sciences gets $30M for eye-disease drug (release)
• Vaccine maker LigoCyte draws $28M (release)
• Heartbeat tracker CardioNet trims IPO, aims for listing today (IPOhome)
• Axial Biotech takes in $6M for spinal diagnostics (release)
• Insulin bioengineer enGene receives $6.4M (release)
• GlucoLight raises funding for, well, glucose monitoring (release)
• Germany’s InflaRx gets seed funding for sepsis work (release)
• Cell imager Amnis pulls in $3.5M (VentureWire)
• Korea Bone Bank gets funding for bone transplants (release)

Luminous Medical raises $24M for automated glucose monitoring – Carlsbad, Calif.-based Luminous Medical, a medical-device maker, raised $23.5 million in a second funding round. Investors included Adams Street Partners, RiverVest Venture Partners, Finistere Ventures, De Novo Ventures and Latterell Venture Partners.

Luminous is developing an automated blood-sugar sensor for diabetic patients being treated in hospital intensive-care units and operating rooms. According to the company, keeping a tight rein on blood-glucose levels, which can soar or crash unexpectedly in diabetics, helps prevent complications while shortening hospital stays and reducing the risk of death.

Measuring such tight control, however, typically requires manually checking blood-glucose levels every 30 to 60 minutes, the company says. The Luminous device, by contrast, uses infrared spectroscopy — a technique that identifies particular molecules by measuring which wavelengths of light they absorb — to measure glucose and other blood chemicals non-invasively.

The company licensed its technology from InLight Solutions of Albuquerque, N.M., which previously invested $60 million in the technology. The device has not been approved by the FDA.

Axial Biotech takes in $6M for spinal diagnostics – Axial Biotech, a Salt Lake City diagnostic-test maker, raised $6 million as part of its second funding round. Investors included Johnson & Johnson Development, vSpring Capital and Ohio Biotech Group.

Axial, founded in 2002 by a group of spinal surgeons and geneticists, is an odd hybrid of biotech and devices. The company aims to produce tests that will predict and measure the severity of spinal problems such as scoliosis, as well as unspecified “motion-preserving technologies” — presumably an alternative to the stigmatizing back braces that orthopedists have long inflicted on children with the condition.

Insulin bioengineer enGene receives $6.4M – Canada’s enGene, a Vancouver biotech looking for ways to jump-start natural insulin production in diabetics, raised $6.4 million in a first round of funding. Investors included Saad Investments, Masa Life Science Ventures and private investors.

EnGene has an audacious — which is to say, of course, also quite chancy — approach to diabetes, in which the immune system attacks and kills insulin-producing “beta cells” in the pancreas (type 1 diabetes) or the body grows desensitized to insulin and requires higher levels (type 2 diabetes). In either case, patients often require insulin shots to maintain blood-sugar levels necessary or proper metabolism.

EnGene proposes to engineer cells in the small intestine — known as “K cells” — to produce insulin themselves. The advantage of this technique lies in the fact that K cells, like beta cells, respond to sugar levels in the gut, although they normally secrete a separate molecule. Once bioengineered to produce insulin as well, these cells could help regulate blood sugar automatically much the way beta cells normally do.

Of course, gene therapy has, in general, been a great disappointment so far, so there’s no shortage of uncertainty associated with this sort of technique. EnGene has tested its technique in mice, but not yet in humans. The startup plans to seek a second round of funding in the second half.

Alimera Sciences gets $30M for eye-disease drug – Alimera Sciences, an Alpharetta, Ga., drug developer with a focus on eye disease, raised $30 million in a third funding round. The company will now take a majority stake in its drug for diabetic macular edema, a vision-degrading complication of diabetes, which Alimera is developing with its partner pSividia.

We’ve written before about Alimera, which is presumably still contemplating an IPO this fall. All five of the company’s existing VC backers participated in the round: BA Venture Partners, Domain Associates, Intersouth Partners, Polaris Venture Partners and Venrock Associates.

Vaccine maker LigoCyte draws $28M – LigoCyte Pharmaceuticals, a Bozeman, Mont., biotech focused on new vaccines against infectious disease, raised $28 million in a third funding round. Investors included Forward Ventures, JAFCO, Novartis Venture Fund, Fidelity Biosciences, MedImmune Ventures, Athenian Venture Partners and MC Life Sciences Ventures.

The company is developing new vaccines using “virus-like particles” — usually structural viral proteins, minus the replication machinery packed in DNA or RNA — against gastroenteritis, anthrax and flu. It is also working on antibody drugs against inflammatory disease.

(UPDATED: See below.)

“Antisense” drugs that aim to shut down disease-related genes have long been out of favor, and these days live in the shadow of a hotter and newer technology — RNA interference — that does much the same thing. But that hasn’t stopped Encinitas, Calif.-based Excaliard Pharmaceuticals, a newly formed biotech focused on scarring and “fibrotic” conditions, from taking a fresh stab at the field.

The startup just licensed a slew of antisense technology from Isis Pharmaceuticals, and announced that it raised $15.5 million in a first funding round, presumably to help pay for it. Investors in the round included Alta Partners, ProQuest Investments, and RiverVest Venture Partners.

Excaliard is still keeping its head down — its Web site is basically a stub — so it’s not entirely clear exactly which diseases it plans on tackling. Still, it’s notable that the company appears willing to bet fairly heavily on antisense, which Isis and other biotechs have been working on for more than two decades, still without notable success.

Antisense technology essentially involves using short snippets of nucleic acid that bind to “complementary” strands of RNA produced as a gene produces a new protein. That binding effectively shuts down the protein production process, at least in theory. In practice, antisense drugs have failed to live up to their potential, partly because they have had difficulty getting inside cells, which is necessary to get at the RNA involved in protein production. For a graphic version of how this is all supposed to work, click on the image at upper left for a larger version.

Excaliard has paid a fairly substantial amount to get into the antisense field. It handed over an unspecified amount of equity to Isis and made a cash payment of $1 million for the rights to develop antisense drugs against a particular gene — presumably one whose malfunction is related to excessive scarring of some sort. Isis is also entitled to milestone payments and royalties should any drugs make progress.

Although antisense has long gotten a bad rap (multiple high-profile failures will do that), it’s also worth noting that Isis is getting some positive buzz off its leading antisense candidate, an anti-cholesterol drug it now calls mipomersin that has produced some promising results in mid-stage trials. Of course, previous antisense drugs have also looked good in such “phase II” trials, only to collapse in larger and more rigorous tests, but maybe this time will be different.

UPDATE: Actually, there may be a resurgence of sorts underway in antisense. It slipped my mind earlier that the U.K. startup Antisense Pharma just raised the equivalent of $38 million for a late-stage trial of an antisense brain-cancer drug. Also, Isis recently spun out Altair Therapeutics to pursue antisense in respiratory disease.

TissueLink Medical, a Dover, N.H., developer of systems that limit blood loss during surgery, raised $20 million from insiders in a fifth funding round, VentureWire reports (subscription required).

From the VentureWire report:

Existing investors RiverVest Venture Partners and TLM Investors LLC, a group headed by Anthony Arnerich, chief executive of consultancy Arnerich Massena & Associates Inc. led the round, said John Landry, controller of TissueLink.

TissueLink’s coagulators and sealers use electric energy conducted through a saline solution to close up surgical incisions and stop bleeding in tissue and bone. The company, founded in 1999, named Joseph Army as its new CEO earlier this week, following the retirement of co-founder M. Jacqueline Eastwood.