Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Raman spectroscopy evidence of lipid separation in domestic cat oocytes during freezing. / Mokrousova, V. I.; Okotrub, K. A.; Amstislavsky, S. Y. и др.
в: Cryobiology, Том 95, 08.2020, стр. 177-182.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Raman spectroscopy evidence of lipid separation in domestic cat oocytes during freezing
AU - Mokrousova, V. I.
AU - Okotrub, K. A.
AU - Amstislavsky, S. Y.
AU - Surovtsev, N. V.
N1 - Publisher Copyright: © 2020 Elsevier Inc.
PY - 2020/8
Y1 - 2020/8
N2 - Although lipid droplets are believed to play an important role in cryopreservation of mammalian embryos and oocytes, the effect of low temperatures on lipid droplets and related mechanisms of cryodamage are still obscure. Here, we provide Raman spectroscopy evidence of lipid separation inside the lipid droplets in domestic cat oocytes during slow freezing. It was shown that at −25 °C lipids coexist in two separated phase states inside lipid droplets. The scale of detected domains was a few micrometers size. We also found that under certain conditions these areas have a specific spatial distribution. Lipids with high melting temperatures are distributed near the surface of lipid droplets while fusible lipids are located deep inside. Raman spectroscopy was found to be a prospective approach to study inhomogeneity of lipid phase transition in cells and to reveal effects of this inhomogeneity on cryopreservation of biological cells.
AB - Although lipid droplets are believed to play an important role in cryopreservation of mammalian embryos and oocytes, the effect of low temperatures on lipid droplets and related mechanisms of cryodamage are still obscure. Here, we provide Raman spectroscopy evidence of lipid separation inside the lipid droplets in domestic cat oocytes during slow freezing. It was shown that at −25 °C lipids coexist in two separated phase states inside lipid droplets. The scale of detected domains was a few micrometers size. We also found that under certain conditions these areas have a specific spatial distribution. Lipids with high melting temperatures are distributed near the surface of lipid droplets while fusible lipids are located deep inside. Raman spectroscopy was found to be a prospective approach to study inhomogeneity of lipid phase transition in cells and to reveal effects of this inhomogeneity on cryopreservation of biological cells.
KW - Cryopreservation
KW - Freezing
KW - Freezing cell
KW - Lipid droplet
KW - Lipid phase transition
KW - Oocyte
KW - Raman spectroscopy
KW - Triglyceride
KW - MEMBRANE
KW - BEHAVIOR
KW - CRYOPRESERVATION
KW - DAMAGE
KW - IN-VITRO
KW - PHASE-TRANSITION
KW - SPATIAL-DISTRIBUTION
KW - EMBRYOS
UR - http://www.scopus.com/inward/record.url?scp=85081662537&partnerID=8YFLogxK
U2 - 10.1016/j.cryobiol.2020.03.005
DO - 10.1016/j.cryobiol.2020.03.005
M3 - Article
C2 - 32171795
AN - SCOPUS:85081662537
VL - 95
SP - 177
EP - 182
JO - Cryobiology
JF - Cryobiology
SN - 0011-2240
ER -
ID: 23805022