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MacLeod R, Chan FV, Yuan H, Ye X, Sin YJA, Vitelli TM, Cucu T, Leung A, Baljak I, Osinski S, Fu Y, Jung GID, Amar A, DeAngelis PL, Hellman U, Cowman MK. Selective isolation of hyaluronan by solid phase adsorption to silica. Anal Biochem 2022; 652:114769. [PMID: 35660507 PMCID: PMC9589902 DOI: 10.1016/j.ab.2022.114769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 04/28/2022] [Accepted: 05/27/2022] [Indexed: 11/01/2022]
Abstract
A solid phase adsorption method for selective isolation of hyaluronan (HA) from biological samples is presented. Following enzymatic degradation of protein, HA can be separated from sulfated glycosaminoglycans, other unsulfated glycosaminoglycans, nucleic acids, and proteolytic fragments by adsorption to amorphous silica at specific salt concentrations. The adsorbed HA can be released from silica using neutral and basic aqueous solutions. HA ranging in size from ∼9 kDa to MDa polymers has been purified by this method from human serum and conditioned medium of cultured cells.
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Affiliation(s)
- Rebecca MacLeod
- Department of Biomedical Engineering, Tandon School of Engineering, New York University, 433 First Avenue, 9thfloor, New York, NY, 10010, USA.
| | - Fok Vun Chan
- Echelon Biosciences Inc., 675 Arapeen Drive, Suite 302, Salt Lake City, UT, 84108, USA.
| | - Han Yuan
- Department of Chemical and Biomolecular Engineering, Tandon School of Engineering, New York University, 6 Metrotech Center, Brooklyn, NY, 11201, USA.
| | - Xin Ye
- Department of Chemical and Biomolecular Engineering, Tandon School of Engineering, New York University, 6 Metrotech Center, Brooklyn, NY, 11201, USA.
| | - Yun Jin Ashley Sin
- Department of Biomedical Engineering, Tandon School of Engineering, New York University, 433 First Avenue, 9thfloor, New York, NY, 10010, USA.
| | - Teraesa M Vitelli
- Department of Biomedical Engineering, Tandon School of Engineering, New York University, 433 First Avenue, 9thfloor, New York, NY, 10010, USA.
| | - Tudor Cucu
- Department of Chemical and Biomolecular Engineering, Tandon School of Engineering, New York University, 6 Metrotech Center, Brooklyn, NY, 11201, USA.
| | - Annie Leung
- Department of Chemical and Biomolecular Engineering, Tandon School of Engineering, New York University, 6 Metrotech Center, Brooklyn, NY, 11201, USA.
| | - Irene Baljak
- Department of Biomedical Engineering, Tandon School of Engineering, New York University, 433 First Avenue, 9thfloor, New York, NY, 10010, USA.
| | - Samantha Osinski
- Department of Chemical and Biomolecular Engineering, Tandon School of Engineering, New York University, 6 Metrotech Center, Brooklyn, NY, 11201, USA.
| | - Yuhong Fu
- Department of Chemical and Biomolecular Engineering, Tandon School of Engineering, New York University, 6 Metrotech Center, Brooklyn, NY, 11201, USA.
| | - Gyu Ik Daniel Jung
- Department of Chemical and Biomolecular Engineering, Tandon School of Engineering, New York University, 6 Metrotech Center, Brooklyn, NY, 11201, USA.
| | - Anant Amar
- Department of Chemical and Biomolecular Engineering, Tandon School of Engineering, New York University, 6 Metrotech Center, Brooklyn, NY, 11201, USA.
| | - Paul L DeAngelis
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, 940 Stanton L. Young Blvd., Oklahoma, OK, 73104, USA.
| | - Urban Hellman
- Department of Public Health and Clinical Medicine, Umeå University, SE-901 87, Umeå, Sweden.
| | - Mary K Cowman
- Department of Biomedical Engineering, Tandon School of Engineering, New York University, 433 First Avenue, 9thfloor, New York, NY, 10010, USA; Department of Chemical and Biomolecular Engineering, Tandon School of Engineering, New York University, 6 Metrotech Center, Brooklyn, NY, 11201, USA.
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Rivas F, Erxleben D, Smith I, Rahbar E, DeAngelis PL, Cowman MK, Hall AR. Methods for isolating and analyzing physiological hyaluronan: a review. Am J Physiol Cell Physiol 2022; 322:C674-C687. [PMID: 35196167 PMCID: PMC8977137 DOI: 10.1152/ajpcell.00019.2022] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 02/22/2022] [Accepted: 02/22/2022] [Indexed: 01/01/2023]
Abstract
The carbohydrate hyaluronan (or hyaluronic acid, HA) is found in all human tissues and biofluids where it has wide-ranging functions in health and disease that are dictated by both its abundance and size. Consequently, hyaluronan evaluation in physiological samples has significant translational potential. Although the analytical tools and techniques for probing other biomolecules such as proteins and nucleic acids have become standard approaches in biochemistry, those available for investigating hyaluronan are less well established. In this review, we survey methods related to the assessment of native hyaluronan in biological specimens, including protocols for separating it from biological matrices and technologies for determining its concentration and molecular weight.
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Affiliation(s)
- Felipe Rivas
- Virginia Tech-Wake Forest University School of Biomedical Engineering and Sciences, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Dorothea Erxleben
- Virginia Tech-Wake Forest University School of Biomedical Engineering and Sciences, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Ian Smith
- Virginia Tech-Wake Forest University School of Biomedical Engineering and Sciences, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Elaheh Rahbar
- Virginia Tech-Wake Forest University School of Biomedical Engineering and Sciences, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Paul L DeAngelis
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Mary K Cowman
- Department of Biomedical Engineering, New York University Tandon School of Engineering, New York, New York
- Department of Orthopedic Surgery, New York University Grossman School of Medicine, New York, New York
| | - Adam R Hall
- Virginia Tech-Wake Forest University School of Biomedical Engineering and Sciences, Wake Forest School of Medicine, Winston-Salem, North Carolina
- Comprehensive Cancer Center, Wake Forest School of Medicine, Winston-Salem, North Carolina
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Kim M, Kujawa A, Battiston M, Demetriou E, Schneider T, Collorone S, Tur C, Evans V, Okuchi S, Atkinson D, Gandini Wheeler-Kingshott CAM, Golay X. Translating pH-sensitive PROgressive saturation for QUantifying Exchange rates using Saturation Times (PRO-QUEST) MRI to a 3T clinical scanner. Magn Reson Med 2020; 84:1734-1746. [PMID: 32112451 DOI: 10.1002/mrm.28229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 01/16/2020] [Accepted: 02/04/2020] [Indexed: 11/07/2022]
Abstract
PURPOSE To translate the recently developed PRO-QUEST (Progressive saturation for quantifying exchange rates using saturation times) sequence from preclinical 9.4T to 3T clinical magnetic field strength. METHODS Numerical simulations were performed to define the optimal saturation flip angles for PRO-QUEST saturation pulses at 3T and demonstrate the effect of a ∆T2 error on the exchange rate (kex ) estimation at various field strengths. Exchange-dependent relaxation rate (Rex ) was measured for glutamate solutions in various pH, healthy volunteers and patients with multiple sclerosis (MS). Additionally, concentration-independent ratiometric Rex maps were produced to evaluate regional signal variations across the brain of human volunteers. RESULTS The calculated Rex significantly correlates with pH in glutamate samples, however, kex values are underestimated as compared to those previously obtained at 9.4T. In the ratiometric Rex map of healthy volunteers, no significant differences are found between grey matter, white matter, and basal ganglia. In patients with MS, white matter lesions are visible in single saturation power Rex maps whereas only a periventricular lesion is apparent in the ratiometric Rex map. CONCLUSION We demonstrate that quantification of pH sensitive indices using PRO-QUEST is feasible at 3T within clinically acceptable acquisition times. Our initial findings in patients with MS show that pH sensitive indices varied with the type of lesion examined whereas no significant difference was found in healthy volunteers between tissue types, suggesting that it would be worthwhile to apply PRO-QUEST in a larger cohort of patients to better understand its distinct imaging features relative to conventional techniques.
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Affiliation(s)
- Mina Kim
- Department of Brain Repair and Rehabilitation, UCL Queen Square Institute of Neurology, Faculty of Brain Sciences, University College London, London, UK
| | - Aaron Kujawa
- Department of Brain Repair and Rehabilitation, UCL Queen Square Institute of Neurology, Faculty of Brain Sciences, University College London, London, UK
| | - Marco Battiston
- NMR Research Unit, Queen Square MS Centre, Department of Neuroinflammation, UCL Queen Square Institute of Neurology, Faculty of Brain Sciences, University College London, London, UK
| | - Eleni Demetriou
- Department of Brain Repair and Rehabilitation, UCL Queen Square Institute of Neurology, Faculty of Brain Sciences, University College London, London, UK
| | | | - Sara Collorone
- NMR Research Unit, Queen Square MS Centre, Department of Neuroinflammation, UCL Queen Square Institute of Neurology, Faculty of Brain Sciences, University College London, London, UK
| | - Carmen Tur
- NMR Research Unit, Queen Square MS Centre, Department of Neuroinflammation, UCL Queen Square Institute of Neurology, Faculty of Brain Sciences, University College London, London, UK
| | - Vincent Evans
- UCL Centre for Medical Imaging, University College London, London, UK
| | - Sachi Okuchi
- Department of Brain Repair and Rehabilitation, UCL Queen Square Institute of Neurology, Faculty of Brain Sciences, University College London, London, UK
| | - David Atkinson
- UCL Centre for Medical Imaging, University College London, London, UK
| | - Claudia A M Gandini Wheeler-Kingshott
- NMR Research Unit, Queen Square MS Centre, Department of Neuroinflammation, UCL Queen Square Institute of Neurology, Faculty of Brain Sciences, University College London, London, UK.,Department of Brain and Behavioural Sciences, University of Pavia, Pavia, Italy.,Brain MRI 3T Research Centre, IRCCS Mondino Foundation, Pavia, Italy
| | - Xavier Golay
- Department of Brain Repair and Rehabilitation, UCL Queen Square Institute of Neurology, Faculty of Brain Sciences, University College London, London, UK
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Moshayedi P, Carmichael ST. Hyaluronan, neural stem cells and tissue reconstruction after acute ischemic stroke. BIOMATTER 2013; 3:23863. [PMID: 23507922 PMCID: PMC3732322 DOI: 10.4161/biom.23863] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Focal stroke is a disabling disease with lifelong sensory, motor and cognitive impairments. Given the paucity of effective clinical treatments, basic scientists are developing novel options for protection of the affected brain and regeneration of lost tissue. Tissue bioengineering and stem/progenitor cell treatments have both been individually pursued for stroke neural repair therapies, with some benefit in tissue recovery. Emerging directions in stroke neural repair approaches combine these two therapies to use biopolymers with stem/progenitor transplants to promote greater cell survival in the transplant and directed delivery of bioactive molecules to the transplanted cells and the adjacent injured tissue. In this review the background literature on a combined use of neural stem/progenitor cells encapsulated in hyaluronan gels is discussed and the way this therapeutic approach can affect the important processes involved in brain tissue reconstruction, such as angiogenesis, axon regeneration, neural differentiation and inflammation is clarified. The glycosaminoglycan hyaluronan can optimize those processes and be employed in a successful neural tissue engineering approach.
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Affiliation(s)
- Pouria Moshayedi
- Department of Neurology; David Geffen School of Medicine at UCLA; Los Angeles, CA USA
| | - S Thomas Carmichael
- Department of Neurology; David Geffen School of Medicine at UCLA; Los Angeles, CA USA
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