User Tools

    To create and edit articles, please register and log-in

Main Menu : categories & index etc.

Main menu
Click categories to expand

A-Z listingplugin-autotooltip__plain plugin-autotooltip_bigA-Z listing

This is an alphabetical index of all content pages.

Other categories



Also see

Importance Ratings
Curator's rationale
AI Policy

Twitter feed š•

Feeds + s.e.o. etc.
rss / xml feed
sitemap file
A-Z listing (archived)

Indexed under : Life Sciences / Zoology

Wikenigma - an Encyclopedia of Unknowns Wikenigma - an Encyclopedia of the Unknown

Naked mole-rat - cancer resistance

Naked mole-rats (NMRs; Heterocephalus glaber) are highly adapted, eusocial rodents renowned for their extreme longevity and resistance to cancer. Because cancer has not been formally described in this species, NMRs have been increasingly utilized as an animal model in aging and cancer research.ā€œ

Source : Veterinary Pathology open access , Volume: 53 issue: 3, page(s): 691-696

The paper cited above described two cases of pre-cancerous lesions in zoo-housed Naked Mole-Rats (NMR). This was the first time that any cancer, of any type, had been found in the species. Making them (almost*) the only mammal which is not routinely susceptible to the disease.

Because of their innate resistance to cancer, NMRs are the subject of intense research attempting to discover why.

There are currently several theories. One focuses on mammalian genes p16 and p27, which, it has been suggested, act as a double barrier to uncontrolled cell proliferation. Another is based on the fact that skin cells of the naked mole-rat have high levels of HMW-HA - a natural sugary substance that is said to prevent tumours developing. A third theory is that NMRs have has a unique fragmented ribosomal RNA structure which enables more accurate protein translation than other mammals.

See: Wikipedia

*Note : The Golan Heights blind mole-rat (Spalax golani) and the Judean Mountains blind mole-rat (Spalax judaei) are also extremely resistant to cancer - but apparently via a different mechanism. See : PNAS open accessNovember 20, 2012 109 (47) 19392-19396

Also see :Peto's paradoxplugin-autotooltip__plain plugin-autotooltip_bigPeto's paradox

Peto's Paradox was introduced by the UK epidemiologist Richard Peto in 1977. It is still generally considered unsolved.

Simply stated : All animal cells have the potential to turn cancerous. Large animals have many more cells, therefore larger animals sā€¦

    Please share this page to help promote Wikenigma !

Dear reader : Do you have any suggestions for the site's content?

Ideas for new topics, and suggested additions / corrections for older ones, are always welcome.

If you have skills or interests in a particular field, and have suggestions for Wikenigma, get in touch !

Or, if you'd like to become a regular contributor . . . request a login password. Registered users can edit the entire content of the site, and also create new pages.

( The 'Notes for contributors' section in the main menu has further information and guidelines etc.)

Automatic Translation

You are currently viewing an auto-translated version of Wikenigma

Please be aware that no automatic translation engines are 100% accurate, and so the auto-translated content will very probably feature errors and omissions.

Nevertheless, Wikenigma hopes that the translated content will help to attract a wider global audience.

Show another (random) article

Further resources :