MicroRNA-455-3p as a Peripheral Biomarker for Alzheimer's Disease

Abstract

The present invention includes a method of protecting neuronal cells from Aβ-induced toxicities in a subject comprising: providing the subject in need of treatment for an Aβ-induced toxicity with an agent that increases the miRNA-445-3p in the subject, wherein an increase in miR-455-3p expression in the neuronal cells enhances neuronal cell survival.

What is claimed is: 
     
         1 . A method of protecting neuronal cells from Aβ-induced toxicities in a subject comprising:
 providing the subject in need of treatment for an Aβ-induced toxicity with an agent that increases the miRNA-445-3p in the subject, wherein an increase in miR-455-3p expression in the neuronal cells enhances neuronal cell survival. 
 
     
     
         2 . The method of  claim 1 , wherein the agent that increases the miRNA-445-3p in the subject is a nucleic acid vector that expresses miRNA-445-3p in neuronal cells of the subject. 
     
     
         3 . The method of  claim 1 , wherein the agent enhances at least one of: mitochondrial biogenesis, enhances synaptic activity or mitochondrial health. 
     
     
         4 . The method of  claim 1 , further comprising providing the subject with a cyclooxygenase inhibitor, a Catecholamine transferase inhibitor, a protein kinases inhibitor, a Neurotransmitter transporter inhibitor, a Renin-angiotensin system inhibitor, a EGFR tyrosine kinase inhibitor, or a HMG-CoA reductase inhibitor. 
     
     
         5 . The method of  claim 1 , further comprising the step of identifying a subject in need of treatment for the Aβ-induced toxicity by detecting the presence or the increase in miRNA-445-3p to produce a score that is indicative of a likelihood of developing AD, wherein a higher score relative to a healthy control indicates that the patient is likely to have the prognosis for transitioning to classified AD, wherein the healthy control is derived from a non-AD patient with no clinical evidence of AD. 
     
     
         6 . The method of  claim 5 , wherein the patient is identified at least 0.1, 0.9, 2.0, 3.5, or greater than 3.5 years prior to reaching clinical disease classification. 
     
     
         7 . The method of  claim 5 , wherein the step of assessing comprises RT-PCR, qRT-PCR, biochip, singleplexed or multiplexed RT-PCR. 
     
     
         8 . The method of  claim 5 , further comprising assessing at least one additional biomarker selected from: hsa-miR-3613-3p and hsa-miR-4668-5p, which is up-regulated. 
     
     
         9 . The method of  claim 5 , further comprising assessing at least one additional biomarker selected from: hsa-mir-320d-2, hsa-miR-378h, hsa-miR-3921, hsa-miR-6805-5p, hsa-miR-92a-3p, hsa-miR-3613-5p, which is down-regulated. 
     
     
         10 . The method of  claim 5 , wherein obtaining the dataset associated with the sample comprises obtaining the sample and processing the sample to experimentally determine the dataset, or wherein obtaining the dataset associated with the sample comprises receiving the dataset from a third party that has processed the sample to experimentally determine the dataset. 
     
     
         11 . The method of  claim 5 , further comprising identifying a relative of the patient at risk for AD by obtaining a score from a dataset associated with a blood, serum, or plasma sample from a relative of the AD patient prior to reaching clinical disease classification. 
     
     
         12 . The method of  claim 5 , wherein the healthy control is a pre-determined average level derived from a healthy individual with no clinically documented evidence of AD. 
     
     
         13 . The method of  claim 5 , wherein at least one of:
 the miR-455-3p has a greater that 20-fold increase in expression in Braak stage V and VI compared to controls;   the expression of miR-3613-3p is higher in the brain tissues at Braak stage V when compared to controls;   the expression of miR-4668-5p up-regulated in AD brains at Braak stages IV, V, and VI, but less than miR-455-3p or MiR-4674;   the expression of mir-6722 was down-regulated in AD serum samples Braak stages I to III, but increased in the AD patients at Braak stage VI, V, and VI;   the upregulation of miR-455-3p was significantly higher in postmortem brains from AD patients at Braak stage V having an ApoE (3/4) genotype when compared to controls; or   the Braak stage can be differentiated between Stage I to III versus Brask Stage IV to VI by comparing the expression of miR-455-3p, miR-3613-3p, miR-4668-5p, and mir-6722.   
     
     
         14 . A method for treating at least one of amyloid precursor protein (APP) processing, amyloid beta (Aβ) formation, defective mitochondrial biogenesis/dynamics and synaptic damage in AD progression in a subject suspected of having Alzheimer's disease (AD) comprising:
 providing the subject in need of treatment for an Aβ-induced toxicity with a vector increases the expression of miRNA-445-3p in the subject, wherein an increase in miR-455-3p expression in the neuronal cells enhances neuronal cell survival, wherein the amount is sufficient to at least one of correct amyloid precursor protein (APP) processing, prevent amyloid beta (Aβ) formation, decrease defective mitochondrial biogenesis/dynamics or reduce or prevent synaptic damage in AD progression. 
 
     
     
         15 . The method of  claim 14 , wherein the expression of miRNA-445-3p in neuronal cells reduces a level of mutant APP, Aβ(1-40) and Aβ(1-42), and C99 by miR-455-3p. 
     
     
         16 . The method of  claim 14 , further comprising administering a cyclooxygenase inhibitor, a Catecholamine transferase inhibitor, a protein kinases inhibitor, a Neurotransmitter transporter inhibitor, a Renin-angiotensin system inhibitor, a EGFR tyrosine kinase inhibitor, or a HMG-CoA reductase inhibitor. 
     
     
         17 . The method of  claim 14 , further comprising assessing at least one additional biomarker selected from: hsa-miR-3613-3p and hsa-miR-4668-5p, which is up-regulated. 
     
     
         18 . The method of  claim 14 , further comprising assessing at least one additional biomarker selected from: hsa-mir-320d-2, hsa-miR-378h, hsa-miR-3921, hsa-miR-6805-5p, hsa-miR-92a-3p, hsa-miR-3613-5p, which is down-regulated. 
     
     
         19 . The method of  claim 14 , wherein the patient is identified at least 0.1, 0.9, 2.0, 3.5, or greater than 3.5 years prior to reaching clinical disease classification. 
     
     
         20 . The method of  claim 14 , wherein the step of assessing comprises RT-PCR, qRT-PCR, biochip, singleplexed or multiplexed RT-PCR. 
     
     
         21 . A method for treating a subject with Alzheimer's Disease (AD) comprising:
 obtaining a blood, serum, or plasma sample from the AD patient;   assessing the dataset for a presence or an increase in an amount of miRNA-445-3p; and   if the subject has a decrease in miRNA-445-3p expression or is in need of an increase in the expression of miRNA-445-3p, providing the subject in need of treatment for an Aβ-induced toxicity an agent that increases the miRNA-445-3p in the subject, wherein an increase in miR-455-3p expression in the neuronal cells enhances neuronal cell survival.   
     
     
         22 . The method of  claim 21 , further comprising administering a cyclooxygenase inhibitor, a Catecholamine transferase inhibitor, a protein kinases inhibitor, a Neurotransmitter transporter inhibitor, a Renin-angiotensin system inhibitor, a EGFR tyrosine kinase inhibitor, or a HMG-CoA reductase inhibitor. 
     
     
         23 . The method of  claim 21 , wherein the step of assessing comprises RT-PCR, qRT-PCR, biochip, singleplexed or multiplexed RT-PCR. 
     
     
         24 . The method of  claim 21 , further comprising assessing at least one additional biomarker selected from: hsa-miR-3613-3p and hsa-miR-4668-5p, which is up-regulated. 
     
     
         25 . The method of  claim 21 , further comprising assessing at least one additional biomarker selected from: hsa-mir-320d-2, hsa-miR-378h, hsa-miR-3921, hsa-miR-6805-5p, hsa-miR-92a-3p, hsa-miR-3613-5p, which is down-regulated. 
     
     
         26 . The method of  claim 21 , wherein obtaining the dataset associated with the sample comprises obtaining the sample and processing the sample to experimentally determine the dataset, or wherein obtaining the dataset associated with the sample comprises receiving the dataset from a third party that has processed the sample to experimentally determine the dataset. 
     
     
         27 . The method of  claim 21 , further comprising identifying a relative of the patient at risk for AD by obtaining a score from a dataset associated with a blood, serum, or plasma sample from a relative of the AD patient prior to reaching clinical disease classification. 
     
     
         28 . The method of  claim 21 , wherein the healthy control is a pre-determined average level derived from a healthy individual with no clinically documented evidence of AD. 
     
     
         29 . A composition comprising a recombinant anti-miRNA-445-3p nucleic acid sufficient to knockdown the expression of miRNA-445-3p. 
     
     
         30 . A method of treating a subject in need of therapy for Alzheimer's Disease comprising:
 identifying a subject suspected of having Alzheimer's Disease; and   providing the subject with an effective amount of a recombinant miRNA-445-3p expression vector sufficient to upregulate the expression of miRNA-445-3p in the subject in need of therapy for Alzheimer's Disease.