Absence of differences among low, middle, and high molecular weight hyaluronan in activating murine immune cells in vitro

ŠAFRÁNKOVÁ, Barbora, M. HERMANNOVA, Kristina NEŠPOROVÁ, Vladimír VELEBNÝ and Lukáš KUBALA. Absence of differences among low, middle, and high molecular weight hyaluronan in activating murine immune cells in vitro. International journal of biological macromolecules. AMSTERDAM: Elsevier Science BV, Netherlands, 2018, vol. 107, A, p. 1-8. ISSN 0141-8130. Available from: https://dx.doi.org/10.1016/j.ijbiomac.2017.08.131.

Basic information

• Original name: Absence of differences among low, middle, and high molecular weight hyaluronan in activating murine immune cells in vitro
• Authors: ŠAFRÁNKOVÁ, Barbora (203 Czech Republic), M. HERMANNOVA (203 Czech Republic), Kristina NEŠPOROVÁ (203 Czech Republic, belonging to the institution), Vladimír VELEBNÝ (203 Czech Republic, belonging to the institution) and Lukáš KUBALA (203 Czech Republic, guarantor, belonging to the institution).
• Edition: International journal of biological macromolecules, AMSTERDAM, Elsevier Science BV, Netherlands, 2018, 0141-8130.

Other information

• Original language: English
• Type of outcome: Article in a journal
• Field of Study: 10601 Cell biology
• Country of publisher: Netherlands
• Confidentiality degree: is not subject to a state or trade secret
• WWW: URL
• Impact factor: Impact factor: 4.784
• RIV identification code: RIV/00216224:14310/18:00102435
• Organization unit: Faculty of Science
• Doi: http://dx.doi.org/10.1016/j.ijbiomac.2017.08.131
• UT WoS: 000423892200001
• Keywords in English: Inflammation; Phagocytes; Hyaluronan; Molecular weight
• Tags: International impact, Reviewed

Abstract

Hyaluronan (HA) effects on immune response are suggested to be dependent on HA molecular weight (MW), as low MW HA should activate immune cells in contrast to high MW HA. However, some current studies do not support this conception and emphasize the importance of the form of preparation of HA, particularly with respect to its purity and origin. We compared the activation of mouse immune cells by HA samples (100 kDa, 500 kDa, and 997 kDa) prepared from HA originating from rooster comb, and HA samples (71 kDa, 500 kDa, and 1000 kDa) prepared from pharmacological grade HA originating from Streptococcus equi. Interestingly, in contrast to established theory, only middle and high MW HA originating from rooster comb induced the production of tumor necrosis factor-alpha by macrophages and in whole blood. Further, all tested preparations of HA failed to induce the expression of inducible nitric oxide synthase, the production of nitric oxide, or the expression of cyclooxygenase 2 in macrophages and splenocytes. Importantly, all HA samples originating from rooster comb were found to be contaminated by endotoxin (up to 1.23 EU/ml). Hence, low MW HA did not reveal itself to have significantly higher immunostimulatory activity compared to HA of higher MW. (C) 2017 Elsevier B.V. All rights reserved.