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Влияние галектина-3 на апоптоз активированных in vitro СD4 +-лимфоцитов

Влияние галектина-3 на апоптоз активированных in vitro СD4 +-лимфоцитов

Abstract

CD4 +-лимфоциты in vitro, характеризующееся увеличением количества клеток с деполяризованной митохондриальной мембраной.Glycobiology is one of the most rapidly developing fields of science, which deals with lectincarbohydrate interactions. Currently, endogenous β-galactoside-binding proteins from lectins family galectins are considered as perspective regulators of cellular homeostasis. Galectin-3 is a multifunctional protein involved in the regulation of the life cycle of cells, but its proapoptotic effects on CD4 + lymphocytes are still poorly studied. The aim of the work is to investigate the influence of galectin-3 on apoptosis of CD4 +-lymphocytes in vitro. Peripheral blood mononuclear cells (PBMC) were obtained from healthy volunteers, activated with antibodies to CD3 and CD28 and cultured with recombinant galectin-3. The activity of apoptosis CD4 + lymphocytes was determined by flow cytometry on an output of phosphatidylserine on the outer surface of the cytoplasmic membrane, increased permeability of the vital dye 7-aminoactinomycin D (7AAD) and reduced mitochondrial potential. Addition of galectin-3 in a dose range of 1,0 to 2,5 ug/ml led to a significant increase of the percentage of annexin7 +AAD + CD4 + lymphocytes. At the same time, the number of lymphocytes with reduced mitochondrial transmembrane potential increased significantly. It was established that galectin-3 has a dose-dependent apoptotic effect on CD4 + lymphocytes in vitro, characterized by increasing number of cells with depolarized mitochondrial membrane.

Одним из быстро развивающихся направлений науки является гликобиология, изучающая лектин-углеводные взаимодействия. В качестве перспективных регуляторов клеточного гомеостаза в настоящее время рассматриваются эндогенные гликансвязывающие белки семейства лектинов галектины. Галектин-3 является многофункциональным белком, участвующим в регуляции жизненного цикла клеток, однако остаются малоизученными его проапоптотические эффекты в отношении CD4 +-лимфоцитов. Целью работы явилось изучение влияния галектина-3 на апоптоз CD4 +-лимфоцитов in vitro. Мононуклеарные лейкоциты здоровых доноров активировали с помощью антител к CD3 и CD28 и культивировали с добавлением рекомбинантного галектина-3. Активность апоптоза CD4 +-лимфоцитов определяли методом проточной цитофлуориметрии по выходу фосфатидилсерина на внешнюю поверхность цитоплазматической мембраны, увеличению проницаемости для витального красителя 7-аминоактиномицина D (7AAD) и снижению потенциала митохондрий. Добавление галектина-3 в диапазоне доз от 1,0 до 2,5 мкг/мл приводило к значительному повышению содержания Annexin +7AAD +-CD4 +-лимфоцитов. При этом достоверно увеличивалось количество лимфоцитов со сниженным трансмембранным потенциалом митохондрий. Установлено, что галектин-3 оказывает дозозависимое проапоптотическое действие на

Keywords

ГАЛЕКТИН-3, ЛИМФОЦИТЫ, АПОПТОЗ, МИТОХОНДРИАЛЬНЫЙ ПОТЕНЦИАЛ

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    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
bronze
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