Wednesday, March 7, 2018

MadMax Fury Road: Human Skin Bacteria Protects Against Cancer


An apocalyptic story set in the furthest reaches of our planet, in a stark desert landscape where humanity is broken, and almost everyone is crazed fighting for the necessities of life. Within this world exist two rebels on the run who just might be able to restore order. There’s Max, a man of action and a man of few words, who seeks peace of mind following the loss of his wife and child in the aftermath of the chaos. And Furiosa, a woman of action and a woman who believes her path to survival may be achieved if she can make it across the desert back to her childhood homeland.

INTRODUCTION:
 Over a million cases of skin cancer are diagnosed in the United States each year. More than 95 percent of these are non-melanoma skin cancer, which is typically caused by overexposure to the sun's UV rays. Melanoma is the most serious form of skin cancer that starts in the pigment-producing skin cells, called melanocytes. [B]

Researchers now report on a potential new role for some bacteria on the skin: protecting against cancer. Science continues to peel away layers of the skin micro-biome to reveal its protective properties. In a study published in Science Advances on February 28, University of California San Diego School of Medicine researchers report a potential new role for some bacteria on the skin: protecting against cancer.
BACKGROUND INFORMATION:
Researchers have discovered a strain of bacteria commonly located on healthy human skin called, 'Staphylococcus epidermidis'. This bacteria has the ability to selectively inhibit growth of certain cancers. This bacteria strain produces a chemical capable of killing several cancer cell types and is non-toxic to normal healthy cells. 
  
RESEARCH: 
The chemical produced by S. epidermidis strain is a compound, '6-N-hydroxyaminopurine (6-HAP)'. Mice with S. epidermidis on their skin that did not make 6-HAP had many skin tumors after being exposed to cancer-causing ultraviolet rays (UV), but mice with the S. epidermidis strain producing 6-HAP did not. The molecule '6-HAP' impairs the creation of DNA or "DNA synthesis". It also prevents transformed tumor cells from spreading and can suppress the development of UV-induced skin tumors.

Mice that received intravenous injections of 6-HAP every 48 hours over a two-week period experienced no apparent toxic effects, but when transplanted with melanoma cells, their tumor size was suppressed by more than 50 percent compared to controls. Proof of skin micro-biome's importance to human health keeps increasing. Some bacteria on human skin actually produces antimicrobial peptides that defend against pathogenic bacteria (i.e. Staph aureus).

S. epidermidis adds a layer of protection against some forms of cancer. More studies are needed to really understand how 6-HAP is produced, whether its effective in the prevention of cancer, or if missing "6-HAP" on the skin increases the risk of cancer. With previous research revealed that chemicals produced by Staphylococcus species commonly found on healthy human skin can kill off certain harmful bacteria, the team looked at numerous strains to explore their antimicrobial powers. [A]
Writing in the journal "Science Advances", Gallo and colleagues discovered a strain of Staphylococcus epidermidis that produced a substance which kills off a harmful bacteria responsible for infections like that of 'strep throat'. Although, this is not the only strain that has this effect. The chemical produced was unusual in nature having a structure similar to a key part of DNA, the 'Adenine'. At first the strain was detected during a normal screening for antimicrobial activity. When the team discovered the nature of the chemical produced by this strain, they conducted experiments to determine if it might have any effects or activity against tumors. [A]

The results revealed the chemical, '6-N-hydroxyaminopurine (6-HAP)'  hindered the production of DNA. Work conducted in cell cultures showed '6-HAP's' ability to prevent several tumor cells from growing or multiplying. The team injected this substance in mice and observed that '6-HAP' is not toxic. However, when melanoma cells were introduced to mice, animals which had received 6-HAP intravenously ended up with tumors that were more than 60% smaller than those that had not received the substance. [A]




They also discovered that the ;6-HAP-producing strain' of Staphylococcus epidermidis on the skin of mice greatly reduced both the number of pre-malignant skin tumors formed when the creatures were exposed to ultraviolet light. While Staphylococcus epidermidis is commonly found on human skin, the team say about 20% of the healthy population is likely to have a strain which produces 6-HAP. Although the strain is common not everyone may have it. [A]

CONCLUSION: 
These observations are helping scientists to better understand how important human micro-biota is and now, how important skin micro-biome is to human health. Time has evolved our bodies to need these microbes, so understanding these components are crucial to having a better grasp of human biology. Future human clinical trials will be focusing on this bacterial produced chemical which functions to protect its host from skin cancers. [A]

[B] https://www.sciencedaily.com/releases/2018/03/180301103701.htm

*Please note! These images are not mine. They were found on various tumblr, pinterest, google image sites! If any are yours please let me know so that I can give you credit for them! Also the people in the images have no relation to the diseases, illnesses, or cancers I write about. Thanks so much & enjoy~ *Screen caps by: https://movie-screencaps.com/mad-max-fury-road-2015/

1 comment:

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