ScienceDaily (Mar. 6, 2012) Northwestern University scientists have developed a powerful analytical method that they have used to direct stem cell differentiation. Out of millions of possibilities, they rapidly identified the chemical and physical structures that can cue stem cells to become osteocytes, cells found in mature bone.

Researchers can use the method, called nanocombinatorics, to build enormous libraries of physical structures varying in size from a few nanometers to many micrometers for addressing problems within and outside biology.

Those in the fields of chemistry, materials engineering and nanotechnology could use this invaluable tool to assess which chemical and physical structures -- including size, shape and composition -- work best for a desired process or function.

Nanocombinatorics holds promise for screening catalysts for energy conversion, understanding properties conferred by nanostructures, identifying active molecules for drug discovery or even optimizing materials for tissue regeneration, among other applications.

Details of the method and proof of concept is published in the Proceedings of the National Academy of Sciences.

"With further development, researchers might be able to use this approach to prepare cells of any lineage on command," said Chad A. Mirkin, who led the work. "Insight into such a process is important for understanding cancer development and for developing novel cancer treatment methodologies."

Mirkin is the George B. Rathmann Professor of Chemistry in the Weinberg College of Arts and Sciences and professor of medicine, chemical and biological engineering, biomedical engineering and materials science and engineering. He also is the director of Northwestern's International Institute for Nanotechnology (IIN).

The new analytical method utilizes a technique invented at Northwestern called polymer pen lithography, where basically a rubber stamp having as many as 11 million sharp pyramids is mounted on a transparent glass backing and precisely controlled by an atomic force microscope to generate desired patterns on a surface. Each pyramid -- a polymeric pen -- is coated with molecules for a particular purpose.

In this work, the researchers used molecules that bind proteins found in the natural cell environment, such as fibronectin, which could then be attached onto a substrate in various patterns. (Fibronectin is a protein that mediates cell adhesion.) The team rapidly prepared millions of textured features over a large area, which they call a library. The library consisted of approximately 10,000 fibronectin patterns having as many as 25 million features ranging in size from a couple hundred nanometers to several micrometers.

To make these surfaces, they intentionally tilt the stamp and its array of pens as the stamp is brought down onto the substrate, each pen delivering a spot of molecules that could then bind fibronectin. The tilt results in different amounts of pressure on the polymeric pens, which dictates the feature size of each spot. Because the pressure varies across a broad range, so does the feature size.

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Influencing stem cell fate: New screening method helps scientists identify key information rapidly

Public release date: 6-Mar-2012 [ | E-mail | Share ]

Contact: Megan Fellman fellman@northwestern.edu 847-491-3115 Northwestern University

Northwestern University scientists have developed a powerful analytical method that they have used to direct stem cell differentiation. Out of millions of possibilities, they rapidly identified the chemical and physical structures that can cue stem cells to become osteocytes, cells found in mature bone.

Researchers can use the method, called nanocombinatorics, to build enormous libraries of physical structures varying in size from a few nanometers to many micrometers for addressing problems within and outside biology.

Those in the fields of chemistry, materials engineering and nanotechnology could use this invaluable tool to assess which chemical and physical structures -- including size, shape and composition -- work best for a desired process or function.

Nanocombinatorics holds promise for screening catalysts for energy conversion, understanding properties conferred by nanostructures, identifying active molecules for drug discovery or even optimizing materials for tissue regeneration, among other applications.

Details of the method and proof of concept is published in the Proceedings of the National Academy of Sciences.

"With further development, researchers might be able to use this approach to prepare cells of any lineage on command," said Chad A. Mirkin, who led the work. "Insight into such a process is important for understanding cancer development and for developing novel cancer treatment methodologies."

Mirkin is the George B. Rathmann Professor of Chemistry in the Weinberg College of Arts and Sciences and professor of medicine, chemical and biological engineering, biomedical engineering and materials science and engineering. He also is the director of Northwestern's International Institute for Nanotechnology (IIN).

The new analytical method utilizes a technique invented at Northwestern called polymer pen lithography, where basically a rubber stamp having as many as 11 million sharp pyramids is mounted on a transparent glass backing and precisely controlled by an atomic force microscope to generate desired patterns on a surface. Each pyramid -- a polymeric pen -- is coated with molecules for a particular purpose.

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Influencing stem cell fate

SAN DIEGO, March 5, 2012 /PRNewswire/ --Histogen Inc., a regenerative medicine company, and Suneva Medical, a privately-held aesthetics company, today announced that they have entered into a license agreement for physician-dispensed aesthetic products containing Histogen's proprietary multipotent cell conditioned media (CCM).

Under the terms of this license agreement, Suneva Medical has acquired exclusive U.S. licensing rights to Histogen's multipotent CCM and the ReGenica branded line of products for topical applications in the licensed market. Suneva Medical will manufacture the ReGenica product line and market it to aesthetic practitioners throughout the U.S. Histogen will receive a transfer price on the CCM, as well as royalties on future sales of ReGenica and product line extensions.

"First, let me say that, as the first step in expanding our business, we are very excited about this particular opportunity as the advent of regenerative medicine is upon us. One of our key business objectives is to find novel products that complement our rapidly growing dermal filler business. We believe Histogen's innovative technology coupled with our proven experience of developing and marketing aesthetic products is a winning combination as it enables us to offer our customers a differentiated product line," stated Nicholas Teti, Chairman and Chief Executive Officer of Suneva Medical.

Through Histogen's technology process, which mimics the embryonic environment including conditions of low oxygen and suspension, cells are triggered to become multipotent, and naturally produce proteins associated with skin renewal and scarless healing. The result is a soluble cell conditioned media containing cell-signaling proteins such as KGF, follistatin, stem cell factor, collagens and laminins, which support the epidermal stem cells that renew skin throughout life. In addition, factors associated with scarring, such as TGF-beta, are decreased or nonexistent.

"The applications for this proprietary multipotent CCM within the field of medical aesthetics are numerous and, based upon the way the proteins within the complex signal the body's own stem cells to rejuvenate and regenerate skin, potentially groundbreaking," said Dr. Gail K. Naughton, CEO and Chairman of the Board at Histogen. "This recognition from Suneva's expert team, with a rich background in developing and marketing aesthetics, validates Histogen's technology and supports the fact that it is different from anything currently in the market."

About Histogen Histogen, launched in 2007, seeks to redefine regenerative medicine by developing a series of high value products that do not contain embryonic stem cells or animal components. Through Histogen's proprietary bioreactors that mimic the embryonic environment, including low oxygen and suspension, newborn cells are encouraged to naturally produce the vital proteins and growth factors from which the Company has developed its rich product portfolio. Histogen has two product families a proprietary cell conditioned media, and a human Extracellular Matrix (ECM) material. For more information, please visit http://www.histogen.com.

About Suneva Medical Suneva Medical, Inc. is a privately-held aesthetics company focused on developing, manufacturing and commercializing novel, differentiated products for the dermatology, plastic and cosmetic surgery markets. The Company's long-lasting injectable product is marketed as Artefill in the U.S. and Bellafill in Canada to correct facial wrinkles. For more information visit http://www.sunevamedical.com.

Contacts:

For Histogen Inc.:

Eileen Brandt Phone: (858) 200-9520 ebrandt@histogeninc.com

Original post:
Histogen Signs License Agreement with Suneva Medical for Cell Conditioned Media-based Aesthetic Products

Public release date: 6-Mar-2012 [ | E-mail | Share ]

Contact: Megan Fellman fellman@northwestern.edu 847-491-3115 Northwestern University

Northwestern University scientists have developed a powerful analytical method that they have used to direct stem cell differentiation. Out of millions of possibilities, they rapidly identified the chemical and physical structures that can cue stem cells to become osteocytes, cells found in mature bone.

Researchers can use the method, called nanocombinatorics, to build enormous libraries of physical structures varying in size from a few nanometers to many micrometers for addressing problems within and outside biology.

Those in the fields of chemistry, materials engineering and nanotechnology could use this invaluable tool to assess which chemical and physical structures -- including size, shape and composition -- work best for a desired process or function.

Nanocombinatorics holds promise for screening catalysts for energy conversion, understanding properties conferred by nanostructures, identifying active molecules for drug discovery or even optimizing materials for tissue regeneration, among other applications.

Details of the method and proof of concept is published in the Proceedings of the National Academy of Sciences.

"With further development, researchers might be able to use this approach to prepare cells of any lineage on command," said Chad A. Mirkin, who led the work. "Insight into such a process is important for understanding cancer development and for developing novel cancer treatment methodologies."

Mirkin is the George B. Rathmann Professor of Chemistry in the Weinberg College of Arts and Sciences and professor of medicine, chemical and biological engineering, biomedical engineering and materials science and engineering. He also is the director of Northwestern's International Institute for Nanotechnology (IIN).

The new analytical method utilizes a technique invented at Northwestern called polymer pen lithography, where basically a rubber stamp having as many as 11 million sharp pyramids is mounted on a transparent glass backing and precisely controlled by an atomic force microscope to generate desired patterns on a surface. Each pyramid -- a polymeric pen -- is coated with molecules for a particular purpose.

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Influencing stem cell fate

05-03-2012 11:59 Learn more about cord blood stem cells here http://www.cordblood.com Cord Blood Registry's Scientific and Medical Affairs team, led by Heather Brown Vice President of Scientific and Medical Affairs, is dedicated to helping understand, communicate and advance stem cell medicine. Her team's focus is on helping find new uses for cord blood, including supporting research that is looking for treatments for conditions that have no treatment today. Our company was founded on the belief that saving newborn stem cells can change the future of medicine. Whether it's providing newborn stem cell banking at no cost to a family with a medical need or partnering with world-class researchers for first-of-their-kind clinical trials, we are committed to advancing stem cell medicine and finding new cures.

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Cord Blood Registry's Leading Science and Research Team - Video