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Induction of Poly(ADP-ribose) Polymerase in Mouse Bone Marrow Stromal Cells Exposed to 900 MHz Radiofrequency Fields: Preliminary Observations

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He Q, Sun Y, Zong L, Tong J, Cao Y · 2016

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Mouse bone marrow cells exposed to cell phone frequency radiation produced significantly more DNA repair enzymes, suggesting cellular stress responses even without measurable DNA damage.

Plain English Summary

Summary written for general audiences

Researchers exposed mouse bone marrow stromal cells to 900 MHz radiofrequency radiation (similar to cell phone frequencies) at low power for 3 hours daily over 5 days. The exposed cells showed significantly increased levels of PARP-1, a repair enzyme that cells produce when DNA is damaged. This suggests that even nonionizing RF radiation can trigger cellular stress responses normally associated with DNA damage.

Why This Matters

This study reveals something the wireless industry would prefer you not think about: cells exposed to RF radiation behave as if they're experiencing DNA damage, even when that damage isn't directly measurable. PARP-1 is essentially an emergency responder that cells dispatch when DNA needs repair. The fact that 900 MHz RF (the same frequency used by many cell phones and wireless devices) triggered this response tells us the cells are under stress.

What makes this particularly relevant is the exposure level: 120 μW/cm². That's actually lower than what your phone produces during a call held against your head (which can exceed 1,000 μW/cm²). The bone marrow cells in this study responded to just 3 hours of daily exposure over 5 days. Your body's bone marrow is where blood cells are produced, making this a particularly concerning tissue to see stress responses in. The science demonstrates that your cells are reacting to RF even when regulators insist the exposure is too low to matter.

Exposure Information

Specific exposure levels were not quantified in this study.

Cite This Study
He Q, Sun Y, Zong L, Tong J, Cao Y (2016). Induction of Poly(ADP-ribose) Polymerase in Mouse Bone Marrow Stromal Cells Exposed to 900 MHz Radiofrequency Fields: Preliminary Observations.
Show BibTeX
@article{he_q_sun_y_zong_l_tong_j_cao_y_ce2817,
  author = {He Q and Sun Y and Zong L and Tong J and Cao Y},
  title = {Induction of Poly(ADP-ribose) Polymerase in Mouse Bone Marrow Stromal Cells Exposed to 900 MHz Radiofrequency Fields: Preliminary Observations},
  year = {2016},
  doi = {10.1155/2016/4918691},
  
}
DOI: 10.1155/2016/4918691

Quick Questions About This Study

PARP-1 is a nuclear enzyme that cells produce to repair damaged DNA. When researchers see increased PARP-1 levels, it indicates cells are experiencing stress and activating damage control mechanisms. In this study, RF radiation triggered this response, suggesting the exposure was causing cellular-level effects that required repair.
900 MHz falls within the frequency range used by GSM cell phones and some wireless devices. The exposure level used in this study (120 μW/cm²) was actually lower than what you experience during a typical cell phone call held to your head, making these findings relevant to everyday wireless device use.
Bone marrow stromal cells are crucial because they support the production of all your blood cells. They're also relatively close to where you carry your phone in your pocket or hold it against your body. Stress responses in these cells could potentially affect blood cell production and immune function.
This study showed that nonionizing RF radiation triggered the same cellular repair response (increased PARP-1) that ionizing radiation causes. While the mechanisms differ, both exposures resulted in cells activating their damage control systems. The evidence shows nonionizing doesn't mean biologically inactive.
The cells were exposed to 900 MHz RF for just 3 hours per day over 5 days at relatively low power (120 μW/cm²). This is less cumulative exposure than many people receive from carrying smartphones, using wireless devices, and living in RF-saturated environments throughout their day.