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# ''' TTR amyloid fibril '''
# ''' TTR amyloid fibril '''


TTR aggregation into amyloid fibrils leads to its insolubility. Consequently, it creates abnormal deposits in the peripheral nerves in the case of FAP, in the central nerves for CNSA, and in heart tissues for FAC and SSA, which are unable to be subjected to a proper degradation by cell metabolism.
Inappropriate TTR foldings cause amyloid depositions. Indeed, aggregates formation can be explained by a destabilization of the TTR’s native conformation, namely the tetramer dissociation into an alternative folded monomeric intermediate. The final result is a protein self-assembly. A particular beta-pleated-sheet structure characterizes the proteins that form insoluble fibrils. [4]
TTR aggregation into amyloid fibrils leads to insolubility. Consequently, it creates abnormal deposits in the peripheral nerves in the case of FAP, in the central nerves for CNSA, and in heart tissues for FAC and SSA. Therefore, the insoluble proteins alter the corresponding organ and tissue functions, and are unable to be subjected to a proper degradation by cell metabolism.


In most of the cases, autosomal dominant mutations of the TTR gene are at the origin of the Human familial amyloidosis (FAP, FAC, CNSA). Val30Met is the most recensed amyloidogenic point mutation observed ([[4tl4]]). However, SSA differentiates from these TTR-related hereditary amyloidosis by usually affecting patients in advanced age, as it involves an aggregate formation due to a progressive accumulation of wild-type TTR proteins mainly associated to misshaping and beta-strand lacking [7], [8].
In most of the cases, autosomal dominant mutations of the TTR gene are at the origin of the Human familial amyloidosis (FAP, FAC, CNSA) through TTR conformational disorder. Val30Met is the most recensed amyloidogenic point mutation observed ([[4tl4]]). However, SSA differentiates from these TTR-related hereditary amyloidosis by usually affecting patients in advanced age, as it involves an aggregate formation due to a progressive accumulation of wild-type TTR proteins mainly associated to misshaping and beta-strand lacking [7], [8].


Inappropriate TTR foldings cause amyloid depositions. Indeed, aggregates formation can be explained by a destabilization of the TTR’s native conformation, namely the tetramer dissociation into an alternative folded monomeric intermediate. The final result is a protein self-assembly. A particular beta-pleated-sheet structure characterizes the proteins that form insoluble fibrils. [4]


# ''' Drug development '''
# ''' Drug development '''