The Sheekey Science Show – Heat Shock

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Aging and activating the heat shock response.

The heat shock response is an evolutionarily conserved response that causes the upregulation of many “molecular chaperones” within a cell.

Sheekey Science

These “molecular chaperones”, otherwise referred to as Heat shock proteins (Hsps), help unfolded proteins to re-fold, aid the assembly of protein complexes and help traffic proteins around a cell.

Sheekey Science

Although the response is named after its discovery in response to a heat-shock, the response is also activated in response to oxidative stress, viral invasion and glucose deprivation, all forms of cellular stress.

Sheekey Science

The activation of heat shock proteins in times of cellular stress is therefore thought to be adaptive since it enables protein folding to be retained in detrimental conditions. A key mediator behind this response is HSF-1.

Sheekey Science

Adding or removing copies of the gene encoding HSF1 in different model organisms has been shown to extend or reduce their lifespan, respectively.

Sheekey Science

The maintenance of proteostasis within a cell is one of the hallmarks of aging and thus many studies reinforce the point that maintenance of a robust heat shock response is important for health and survival.

Sheekey Science

So, can activating the heat shock response be beneficial for healthspan? Well many molecules that can activate HSF1 have been identified and inhibitors of Hsp90 turn out to have senolytic activity. We will discuss this more in the video.

 

Watch more Sheekey Science videos here.

Image credit: Carl Heyerdahl / Unsplash
Phil Newman
Editor-in-Chief Phil is Editor-in-Chief Longevity.Technology and founder of First Longevity which brings together international investors and Longevity start-ups.

In his career, Phil has held c-level management positions; applying his marketing and business development expertise into these tech sectors: Longevity; IoT; AI; Medical Devices; Biopharma; 3D Manufacturing; Smartgrid and Sustainability.

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