New electron microscopy technique limits membrane destruction

Purdue University | April 09, 2019

Membrane proteins play an important role in many biological processes. Studies suggest they’re targeted by more than 50% of all modern medicinal drugs. Unfortunately for researchers, determining their structures has been a longstanding challenge because it’s difficult to track the protein without damaging the cellular membrane using current techniques. Not anymore. Researchers at Purdue University have created an electron microscopy technique termed “cryoAPEX” that accurately tracks membrane proteins in a well-preserved cell. The new method is a hybrid of two commonly used methods in cell biology: high-pressure freezing and chemical fixation.“We took the best features from each technique and played around with conditions until we found a happy medium where you could stain for your protein while maintaining membrane preservation,” said Seema Mattoo, an assistant professor of biological sciences at Purdue. “We were also able to use this information to develop a 3D image of the protein in the context of the cell.”

Spotlight

Doug Eisengrein recorded and mastered the voice over narration for this medical/biotech internet promotional video. Recorded in 2016 at Whole Spectrum Studio, San Francisco Bay Area, California.

Spotlight

Doug Eisengrein recorded and mastered the voice over narration for this medical/biotech internet promotional video. Recorded in 2016 at Whole Spectrum Studio, San Francisco Bay Area, California.

Related News

INDUSTRIAL IMPACT

Athersys Amends Securities Purchase Agreement in Connection with Recent Registered Direct Offering

Athersys, Inc. | September 26, 2022

Athersys, Inc. a regenerative medicine company developing MultiStem® for critical care indications, announced that it has entered into amended agreements to extend the exercise period of the warrants that were issued as part of a registered direct offering that closed on August 17, 2022, among other changes, and to issue additional warrants to the same warrant holder, a healthcare-focused U.S. institutional investor. The Purchase Agreement contains certain restrictions that, subject to certain exceptions, prohibit the Company from issuing its common stock in certain variable rate transactions for a period of 180 days following the Closing Date. The Purchase Agreement also gives the Purchasers the right to participate in certain future offerings of the Company in an amount of up to 30 percent in the aggregate of any offered securities during the 12 months following the Closing Date. On September 22, 2022, the Company entered into an amendment to the Purchase Agreement with the Purchasers to, among other things, (i) extend the exercise period of the Initial Warrants from five years to seven years after the six-month anniversary of the Closing Date (the “Warrant Amendment”), (ii) reduce the Standstill Period from 180 days to 150 days following the Closing Date, (iii) reduce the term and amount of the Participation Right from twelve months to six months following the Closing Date and from 30 percent to 20 percent in the aggregate of any offered securities, respectively, and (iv) require the Purchasers, subject to certain conditions, to participate in the event the Company proposes to offer and sell shares of offered securities during the six months following the Closing Date to investors primarily for capital raising purposes. In return, Athersys issued to the same warrant holder additional warrants that are exercisable for an aggregate of 2,000,000 shares of common stock and have an exercise price of $6.3850 for a seven-year period after the six-month anniversary of the date of issuance. A more detailed discussion of the amendments is contained in a Current Report that Athersys filed on September 22, 2022 with the U.S. Securities and Exchange Commission on Form 8-K. “We are pleased to have entered into this amendment with our new major investor which provides more financial flexibility going forward as well as a commitment for the investor that recently invested $12 million in Athersys to participate in future financings if requested. As Athersys continues to pursue licensing and other business development opportunities for our proprietary technology this amendment can help facilitate future transactions with financial and strategic investors. We are fortunate to have established a strong relationship with a prominent healthcare focused institutional investor that embraces the value of our MultiStem cell therapy and is responsive to our priorities,” Dan Camardo, Chief Executive Officer of Athersys “I am also pleased with progress we’ve made in our business transformation and I look forward to updating shareholders during a conference call to be held the week of October 3rd,” he added. Athersys intends to issue a separate news release that will provide further information on the date and time of the call, as well as instructions regarding how to participate. About MultiStem® MultiStem® cell therapy is a patented regenerative medicine product in clinical development that has shown the ability to promote tissue repair and healing in a variety of ways, such as through the production of therapeutic factors in response to signals of inflammation and tissue damage. MultiStem therapy’s potential for multidimensional therapeutic impact distinguishes it from traditional biopharmaceutical therapies focused on a single mechanism of benefit. The therapy represents a unique “off-the-shelf” stem cell product that can be manufactured in a scalable manner, may be stored for years in frozen form, and is administered without tissue matching or the need for immune suppression. Based upon its efficacy profile, its novel mechanisms of action, and a favorable and consistent tolerability demonstrated in clinical studies, we believe that MultiStem therapy could provide a meaningful benefit to patients, including those suffering from serious diseases and conditions with unmet medical need. About Athersys Athersys is a biotechnology company engaged in the discovery and development of therapeutic product candidates designed to extend and enhance the quality of human life. The Company is developing its MultiStem® cell therapy product, a patented, adult-derived “off-the-shelf” stem cell product, initially for disease indications in the neurological, inflammatory and immune, and other critical care indications and has several ongoing clinical trials evaluating this potential regenerative medicine product. Athersys has forged strategic partnerships and a broad network of collaborations to further advance MultiStem cell therapy toward commercialization.

Read More

MEDTECH

TheraVet Announces Its Participation in the 2022 ESVOT Congress With 3 Scientific Communications

TheraVet SA | September 19, 2022

TheraVet a pioneering company in the management of osteoarticular diseases in pets, announced today its participation in the annual congress of the European Society of Veterinary Orthopaedics and Traumatology which will be held from 21 to 24 September at the Acropolis in Nice, France. With nearly 1000 participants, this event is the largest specialised congress in veterinary orthopaedics and traumatology in Europe, bringing together high-quality international speakers and therefore represents a prime showcase for the Company. ESVOT is chaired by Pr. Marc Balligand, who is also the President of the Scientific Advisory Board of TheraVet. About TheraVet SA TheraVet is a veterinary biotechnology company specialising in osteoarticular treatments for companion animals. The Company develops targeted, safe and effective treatments to improve the quality of life of pets suffering from joint and bone diseases. For pet owners, the health of their pets is a major concern and TheraVet’s mission is to address the need for innovative and curative treatments. TheraVet works closely with international opinion leaders in order to provide a more effective response to ever-growing needs in the field of veterinary medicine. TheraVet is listed on Euronext Growth® Paris a with a US subsidiary in Texas. About BIOCERA-VET In close collaboration with an international scientific board, THERAVET® has developed a new line of calcium-phosphate and biological bone substitutes, BIOCERA-VET®. BIOCERA-VET® is a full range of innovative, easy-to-use, efficient & cost-effective bone substitutes indicated in bone surgeries where a bone graft is required and as a palliative alternative in the management of canine osteosarcoma. Based on extremely promising clinical results, this line offers the possibility of a better, more convenient and more efficient orthopedic surgery.

Read More

INDUSTRIAL IMPACT

QIAGEN and Neuron23 Partner to Develop Next-Generation Sequencing Companion Diagnostic for Novel Parkinson’s Disease Drug

QIAGEN and Neuron23™ | September 15, 2022

QIAGEN and Neuron23 Inc., an early stage biotechnology company focused on developing precision medicines for genetically defined neurological and immunological diseases, announced the signing of an agreement to develop a companion diagnostic for Neuron23’s brain penetrant leucine-rich repeat kinase inhibitor for Parkinson’s disease. Under the new Master Collaboration Agreement, QIAGEN will develop and validate a clinical trial assay that will detect a combination of biomarkers discovered by Neuron23 that together predict the responsiveness of Parkinson’s disease to a LRRK2 inhibitor. The partnership will support the clinical development of Neuron23’s drug candidate that is currently in the late stages of preclinical development. Subject to further clinical development, the agreement also covers options for the future development of additional companion diagnostics. Neuron23 joins a group of more than 25 leading pharmaceutical and biotechnology companies who have reached master collaboration agreements with QIAGEN to develop and commercialize companion diagnostic tests for their drug candidates – a deep pipeline of potential future products to advance precision medicine for the benefit of patients around the world. The assay for this collaboration will be integrated into a next-generation sequencing workflow that leverages QIAGEN’s Sample to Insight capabilities, including instrumentation, IVD sample preparation, library preparation and bioinformatics. The workflow is planned to be developed using the NextSeqTM 500 System as part of the NGS strategic collaboration between QIAGEN and Illumina. Based on Neuron23’s artificial intelligence (AI)-enabled drug discovery and biomarker platform, it will target a complex signature of 50 single nucleic polymorphisms for U.S. and European populations and eventually additional SNPs that are prevalent in Asian populations. “The collaboration with Neuron23 shows the rapid momentum precision medicine is gaining in disease areas outside oncology. Our expertise in blood- and NGS-based molecular testing from Sample to Insight will enable Neuron23 to run a clinical trial for a drug candidate that may have the potential to modify the course of an inexorable neurodegenerative disease in a genetically defined population.” Jonathan Arnold, Vice President, Head of Oncology and Precision Diagnostics, at QIAGEN “This collaboration combines the leading expertise of Neuron23 in drug discovery, data science, and machine learning with QIAGEN’s long-standing experience and global leadership in companion diagnostic development. QIAGEN’s blood-based test will help to identify patients with Parkinson’s disease who are likely to respond to Neuron23’s LRRK2 inhibitor. The development of a companion diagnostic identifying this sub-population of Parkinson’s disease patients will de-risk the clinical development of Neuron23’s LRRK2 inhibitor and help identify individuals who may benefit from this disease-modifying therapy. We are excited to be working with an industry leader on the first companion diagnostic developed for Parkinson’s disease,” said Nancy Stagliano, Ph.D., CEO of Neuron23. No laboratory tests are currently available for the diagnosis of non-genetic cases for Parkinson’s disease. Usually, the disease is diagnosed based on medical history and neurological examination. Although no cure currently exists for Parkinson’s disease, therapies are used to alleviate some symptoms. LRRK2 is a complex, multidomain protein found in neurons and many tissues and cell types throughout the body. Mutations in the LRRK2 gene are one of the most common causes of familial Parkinson’s disease and individuals who inherit gain of function mutations in LRRK2 are clearly at higher risk to develop the disease in later life. Additionally, there is emerging evidence that LRRK2 may play a role in a subset of the larger population of patients with non-familial Parkinson’s disease. Recent investigations have shown that small-molecule LRRK2 inhibitors can be neuroprotective, suggesting that therapies targeting LRRK2 could be beneficial in a larger population of patients. QIAGEN is a pioneer in precision medicine and the global leader in collaborations with pharmaceutical and biotechnology companies to co-develop companion diagnostics, which detect clinically relevant genetic abnormalities to provide insights that guide clinical decision-making in diseases such as cancer. QIAGEN has an unmatched depth and breadth of technologies from NGS to polymerase chain reaction and digital PCR for companion diagnostic development. QIAGEN has ten PCR based companion diagnostic indications that are FDA approved, including therascreen EGFR for non-small cell lung cancer, therascreen KRAS for colorectal cancer and NSCLC, therascreen FGFR for urothelial cancer, therascreen PIK3CA for breast cancer based on tissue or plasma samples and the therascreen BRAF kit for colorectal cancer. About QIAGEN QIAGEN N.V., a Netherlands-based holding company, is the leading global provider of Sample to Insight solutions that enable customers to gain valuable molecular insights from samples containing the building blocks of life. Our sample technologies isolate and process DNA, RNA and proteins from blood, tissue and other materials. Assay technologies make these biomolecules visible and ready for analysis. Bioinformatics software and knowledge bases interpret data to report relevant, actionable insights. Automation solutions tie these together in seamless and cost-effective workflows. QIAGEN provides solutions to more than 500,000 customers around the world in Molecular Diagnostics, Applied Testing, Pharma and Academia. As of June 30, 2022, QIAGEN employed more than 6,100 people in over 35 locations worldwide. About Neuron23™ Neuron23™ Inc. is an early stage biotechnology company focused on developing precision medicines for genetically defined neurological and immunological diseases. Neuron23 combines recent advances in human genetics with a state-of-the-art artificial intelligence (AI)-enabled drug discovery and biomarker platform to advance therapeutics for devastating diseases. The Company’s focus areas are neurodegenerative diseases, neuroinflammatory diseases, and systemic autoimmune and inflammatory diseases. Founded in 2018, Neuron23 has assembled a world-class team of experts and entrepreneurs located in South San Francisco, CA.

Read More