Molecular Hydrogen Enhances Proliferation of Cancer Cells That Exhibit Potent Mitochondrial Unfolded Protein Response.
Tomoya Hasegawa, Mikako Ito, Satoru Hasegawa, Masaki Teranishi, Koki Takeda, Shuto Negishi, Hiroshi Nishiwaki, Jun-Ichi Takeda, Tyler W LeBaron, Kinji Ohno · International journal of molecular sciences · 2022
Research-use notice
Independent study record
Each H2HUBB study page organizes source-linked research details for educational use. Interpretation should remain proportional to the study design, population, controls, and limitations.
H2HUBB TAKEAWAY
In seven human cancer cell lines, as seen in Figure 1, the proliferation of four cell lines (A549, HeLa, HT1080, and PC3 cells) was increased 1.16–1.27-fold by 5% hydrogen gas, and 1.30–1.41-fold by 10% hydrogen gas compared to 10% nitrogen gas. The authors concluded that the researchers showed that hydrogen enhances cell proliferation in a subset of cancer cells that have high mitochondrial ETC activities and a readily inducible mtUPR pathway. These findings from a laboratory model add evidence supporting molecular hydrogen's biological and therapeutic potential in the model studied.
What the Findings Mean
H2HUBB reviewed how inhaled hydrogen gas affected the outcomes measured in seven human cancer cell lines. As seen in Figure 1, the proliferation of four cell lines (A549, HeLa, HT1080, and PC3 cells) was increased 1.16–1.27-fold by 5% hydrogen gas, and 1.30–1.41-fold by 10% hydrogen gas compared to 10% nitrogen gas.
What the Researchers Studied
The researchers studied seven human cancer cell lines. The study used a in vitro cell-culture laboratory experiment. The comparison condition was control condition or baseline measurements.
What Effects Did Molecular Hydrogen Have?
Source-reported hydrogen concentration: 100% source-reported H₂ gas concentration; Source-reported hydrogen exposure: 100% source-reported H₂ gas concentration; 3 mL/min H₂ flow. As seen in Figure 1, the proliferation of four cell lines (A549, HeLa, HT1080, and PC3 cells) was increased 1.16–1.27-fold by 5% hydrogen gas, and 1.30–1.41-fold by 10% hydrogen gas compared to 10% nitrogen gas. The authors concluded that the researchers showed that hydrogen enhances cell proliferation in a subset of cancer cells that have high mitochondrial ETC activities and a readily inducible mtUPR pathway. Hydrogen triggers mtUPR and induces cell proliferation in cancer cells that have high basal and spare mitochondrial ETC activities.
Why These Findings Matter
These findings from a laboratory model add evidence supporting molecular hydrogen's biological and therapeutic potential in the model studied.
How Strong Is This Evidence?
This is laboratory evidence from a in vitro cell-culture laboratory experiment. It is most informative for the biological mechanisms, cellular responses, or biochemical outcomes directly measured.
Technical Study Details
H2HUBB classifies this publication as laboratory study with laboratory or cellular evidence. The research population or model was seven human cancer cell lines. The study used a in vitro cell-culture laboratory experiment. The hydrogen delivery method was inhaled hydrogen gas. The source-reported hydrogen concentration was 100% source-reported H₂ gas concentration.
Limitations and Safety
No separate limitations or safety findings were identified in the current-study source text available to H2HUBB.
Original Study and H2HUBB Research Context
H2HUBB presents this source-grounded research record as one contribution to the broader molecular-hydrogen evidence base.