Robert G. Van Buskirk

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The requirement for more effective cryopreservation (CP) methodologies in support of the emerging fields of cell bioprocessing and cell therapy is now critical. Current CP strategies appropriately focus on minimizing the damaging actions of physicochemical stressors and membrane disruption associated with extra- and intracellular ice formation that occurs(More)
Cryopreservation (CP) is an enabling process providing for on-demand access to biological material (cells and tissues) which serve as a starting, intermediate or even final product. While a critical tool, CP protocols, approaches and technologies have evolved little over the last several decades. A lack of conversion of discoveries from the CP sciences into(More)
The expanding complexity of biologics banked for therapeutic applications necessitates the development of improved preservation technologies for support of the emerging fields of reparative and regenerative medicine. Currently, a number of media or "solutions" are utilized for the preservation of biologics. Given the diversity of cell systems utilized in(More)
The immortalized septal cell line, SN56 B5 G4, generated by the fusion of mouse septal area cells and neuroblastoma cells, was used to determine if nimodipine, an antagonist of voltage sensitive calcium 'L' channels, might act in a neuroprotective fashion when intracellular calcium levels were raised by incubation in ouabain and monensin. Fluorescent(More)
Hepatocytes are critical for numerous cell therapies and in vitro investigations. A limiting factor for their use in these applications is the ability to process and preserve them without loss of viability or functionality. Normal rat hepatocytes (NHEPs) and human hepatoma (C3A) cells were stored at either 4°C or 37°C to examine post-processing stress(More)
The effect of mercuric chloride on Madin-Darby Canine Kidney (MDCK) cells grown in culture was assayed by the mitochondrial-specific fluorescent probe, rhodamine 123. Treatment of cells with mercuric chloride resulted in a dissipation of rhodamine fluorescence from the mitochondria into the cytoplasm, followed by a release into the medium bathing the cells.(More)
Cryopreservation (CP) is a critical component in enabling on-demand access to biological material (macromolecules, cells, and tissues), yet CP has evolved little over the last several decades. Today's CP processes often yield a suboptimal "product," which has slowed progression in areas such as cell therapy and stem cell research. Recent discoveries(More)
Human mesenchymal stem cell (hMSC) research has grown exponentially in the last decade. The ability to process and preserve these cells is vital to their use in stem cell therapy. As such, understanding the complex, molecular-based stress responses associated with biopreservation is necessary to improve outcomes and maintain the unique stem cell properties(More)
Recent evidence suggests that the successful treatment of prostate cancer may require adjuvant therapies. Accordingly, a better understanding of the molecular mechanisms involved in current treatments may lead to enhanced efficacy by providing a basis for adjuvant therapies. In this study, we demonstrate that the combination of sub-lethal concentrations of(More)
One of the most lethal carcinomas is pancreatic cancer. As standard treatment using chemotherapy and radiation has shown limited success, thermal regimens (cryotherapy or heat ablation) are emerging as viable alternatives. Although promising, our understanding of pancreatic cancer response to thermal ablation remains limited. In this study, we investigated(More)