PRESENTATION OUTLINE
Progeria
The "pro" means: "before" or "premature"
The "geria" or "gēras" means: "old age"
The word is primarily Greek.
Hutchinson-Gilford Progeria Syndrome (HGPS)
Dr. Jonathon Hutchinson ; 1886
Dr. Hastings Gilford ;
1896
PHENOTYPES
- Pinched/beaked nose
- Small face and jaw
- Prominent eyes
- Baldness
- Aged-looking skin
LMNA GENE
Regular protein created - Lamin A (holds the nucleus together)
Once mutated it is referred to as Progerin (becomes unstable and leads to disorder)
We all make a little bit of Progerin,
Just not as much as one with Progeria
The wildtype protein's function: provide stability and strength to the cell and hold the nucleus together.
The altered protein continues to work and damages the nucleus over time by causing a build up of this altered protein it makes it more likely for cells to die prematurely. I classify this under hyperactive.
LOCATION OF THE GENE: LMNA
Base pair substitution: Cytosine to Thymine
Lead to the altered version of the protein so it's a missense mutation.
How is it inherited?
It's not. Don't worry I'll explain later
Mutant Allelle: Dominant
Not x-linked but it's autosomal.
It's not in anyway gender specific
Before conception, something went wrong :(
In either egg or sperm there was a change in the LMNA gene (a mutation)
They're just young kids who want exactly what we wanted but they won't get the time we were blessed with to live it.
BUT...
- Some of the most energetic kids
- Have lots of ambitions
- They don't lose hope
- Live as normally as possible
PUNNETT SQUARE FOR PROGERIA