Jurnal Internasional Medical Journal of Indonesia FKUI Vol. 30 No. 1 2021
Elevated Extracellular CO2 Level Affects The Adaptive Transcriptional Response and Survival of Human Peripheral Blood Mononuclear Cells Toward Hypoxia and Oxidative Stress
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Title
Jurnal Internasional Medical Journal of Indonesia FKUI Vol. 30 No. 1 2021
Elevated Extracellular CO2 Level Affects The Adaptive Transcriptional Response and Survival of Human Peripheral Blood Mononuclear Cells Toward Hypoxia and Oxidative Stress
Elevated Extracellular CO2 Level Affects The Adaptive Transcriptional Response and Survival of Human Peripheral Blood Mononuclear Cells Toward Hypoxia and Oxidative Stress
Subject
elevated CO2 , extracellular pH, oxidative stress, PBMC, reactive oxygen species
Description
BACKGROUND High carbon dioxide (CO2) level from indoor environments, such as classrooms and offices, might cause sick building syndrome. Excessive indoor CO2 level increases CO2
level in the blood, and over-accumulation of CO2
induces an adaptive response that requires modulation of gene expression. This study aimed to investigate the adaptive transcriptional response toward hypoxia and oxidative stress in human
peripheral blood mononuclear cells (PBMCs) exposed to elevated CO2 level in vitro and its association with cell viability.
METHODS PBMCs were treated in 5% CO2
and 15% CO2 , representatives a high CO₂ level
condition for 24 and 48 hours. Extracellular pH (pHe) was measured with a pH meter. The levels of reactive oxygen species were determined by measuring superoxide and hydrogen peroxide with dihydroethidium and dichlorofluorescin-diacetate assay. The mRNA expression levels of hypoxia-inducible factor (HIF)-1α, HIF-2α, nuclear factor
(NF)-κB, and manganese superoxide dismutase (MnSOD) were analyzed using a realtime reverse transcriptase-polymerase chain reaction (qRT-PCR). Cell survival was determined by measuring cell viability.
RESULTS pHe increased in 24 hours after 15% CO₂ treatment, and then decreased in 48 hours. Superoxide and hydrogen peroxide levels increased after the 24- and 48-hour of high CO₂ level condition. The expression levels of NF-κB, MnSOD, HIF-1α, and HIF-2α decreased in 24 hours and increased in 48 hours. The increased antioxidant
mRNA expression in 48 hours showed that the PBMCs were responsive under high CO2 conditions. Elevated CO2 suppressed cell viability significantly in 48 hours.
CONCLUSIONS After 48 hours of high CO₂ level condition, PBMCs showed an upregulation in genes related to hypoxia and oxidative stress to overcome the effects of CO2 elevation.
level in the blood, and over-accumulation of CO2
induces an adaptive response that requires modulation of gene expression. This study aimed to investigate the adaptive transcriptional response toward hypoxia and oxidative stress in human
peripheral blood mononuclear cells (PBMCs) exposed to elevated CO2 level in vitro and its association with cell viability.
METHODS PBMCs were treated in 5% CO2
and 15% CO2 , representatives a high CO₂ level
condition for 24 and 48 hours. Extracellular pH (pHe) was measured with a pH meter. The levels of reactive oxygen species were determined by measuring superoxide and hydrogen peroxide with dihydroethidium and dichlorofluorescin-diacetate assay. The mRNA expression levels of hypoxia-inducible factor (HIF)-1α, HIF-2α, nuclear factor
(NF)-κB, and manganese superoxide dismutase (MnSOD) were analyzed using a realtime reverse transcriptase-polymerase chain reaction (qRT-PCR). Cell survival was determined by measuring cell viability.
RESULTS pHe increased in 24 hours after 15% CO₂ treatment, and then decreased in 48 hours. Superoxide and hydrogen peroxide levels increased after the 24- and 48-hour of high CO₂ level condition. The expression levels of NF-κB, MnSOD, HIF-1α, and HIF-2α decreased in 24 hours and increased in 48 hours. The increased antioxidant
mRNA expression in 48 hours showed that the PBMCs were responsive under high CO2 conditions. Elevated CO2 suppressed cell viability significantly in 48 hours.
CONCLUSIONS After 48 hours of high CO₂ level condition, PBMCs showed an upregulation in genes related to hypoxia and oxidative stress to overcome the effects of CO2 elevation.
Creator
Septelia Inawati Wanandi, Sekar Arumsari, Edwin Afitriyansyah, Resda Akhra Syahrani, Idham Rafly Dewantara, Luthfian Aby Nurachman, Ihya Fakhrurizal Amin, Putera Dewa Haryono, Kenny Budiman, Adrianus Jonathan Sugiharta, Amino Aytiwan Remedika, Farhan Hilmi Taufikulhakim, Febriana Catur Iswanti, Jason Youngbin Lee, Debabrata Banerjee
Publisher
Fakultas Kedokteran Universitas Indonesia
Date
2021-03-31
Contributor
Sri Wahyuni
Rights
ISSN : 0853-1773
Format
PDF
Language
English
Type
Text
Coverage
Jurnal Internasional Medical Journal of Indonesia FKUI Vol. 30 No. 1 2021
Files
Citation
Septelia Inawati Wanandi, Sekar Arumsari, Edwin Afitriyansyah, Resda Akhra Syahrani, Idham Rafly Dewantara, Luthfian Aby Nurachman, Ihya Fakhrurizal Amin, Putera Dewa Haryono, Kenny Budiman, Adrianus Jonathan Sugiharta, Amino Aytiwan Remedika, Farhan Hilmi Taufikulhakim, Febriana Catur Iswanti, Jason Youngbin Lee, Debabrata Banerjee, “Jurnal Internasional Medical Journal of Indonesia FKUI Vol. 30 No. 1 2021
Elevated Extracellular CO2 Level Affects The Adaptive Transcriptional Response and Survival of Human Peripheral Blood Mononuclear Cells Toward Hypoxia and Oxidative Stress,” Repository Horizon University Indonesia, accessed April 23, 2025, https://repository.horizon.ac.id/items/show/958.
Elevated Extracellular CO2 Level Affects The Adaptive Transcriptional Response and Survival of Human Peripheral Blood Mononuclear Cells Toward Hypoxia and Oxidative Stress,” Repository Horizon University Indonesia, accessed April 23, 2025, https://repository.horizon.ac.id/items/show/958.