p(HGNC:MAPT, pmod(Ph, Thr, 205))

Entity

Name

MAPT

Namespace

hgnc

Namespace Version

20180906

Namespace URL

https://raw.githubusercontent.com/pharmacome/terminology/b46b65c3da259b6e86026514dfececab7c22a11b/external/hgnc-names.belns

When combined with ERK2 catalyzed phosphorylation, the turn-like disrupting G207V mutation in TauF8 hence leads to fast aggregation that already occurs during the phosphorylation reaction. PubMed:28784767

Thr-205 phosphorylated tau was only increased under synaptic activation in the PSD fraction (control 24.57  0.9754 vs Bic/4-AP 38.90  1.936; Fig. 9E), whereas it was decreased after Abetao treatment (control 24.57  0.9754 vs Abeta 13.64  2.416). Synaptic activation after Abetao exposure did not produce any significant Thr-205 phosphorylation of tau (Abeta Bic/4-AP 22.892.796 vs Bic/ 4-AP 38.90  1.93 vs Abeta 13.642.50). PubMed:24760868

Thr-205 phosphorylated tau was only increased under synaptic activation in the PSD fraction (control 24.57  0.9754 vs Bic/4-AP 38.90  1.936; Fig. 9E), whereas it was decreased after Abetao treatment (control 24.57  0.9754 vs Abeta 13.64  2.416). Synaptic activation after Abetao exposure did not produce any significant Thr-205 phosphorylation of tau (Abeta Bic/4-AP 22.892.796 vs Bic/ 4-AP 38.90  1.93 vs Abeta 13.642.50). PubMed:24760868

TNT1 also co-localizes in tissue with the phospho-epitope defined by the AT8 antibody, indicating that PAD exposure represents an early event in AD pathology PubMed:22817713

TNT1 also co-localizes in tissue with the phospho-epitope defined by the AT8 antibody, indicating that PAD exposure represents an early event in AD pathology PubMed:22817713

These data indicated that phosphorylation of PP2A dephosphorylation sites is an important recognition signal for ubiquitination. We used 200 μg of amino-terminal His-tagged full-length recombinant human tau in an in vitro phosphorylation reaction with GSK-3Beta. When phosphorylated, the tau protein reacted on immunoblots with PHF1 (25, 26) and AT8 (24), indicating that at least sites Ser202, Thr205, Ser396, and Ser404 were phosphorylated. Following GSK-3Beta incubation, this tau served as an excellent substrate for in vitro ubiquitination using UbcH5B and the cofactor fraction from AD tau immunoprecipitates (Fig. 2a). This finding suggested that GSK-3Beta can place phosphates on tau that create recognition sites for an E3 Ub ligase. PubMed:14612456

The quantification of all immunoreactive bands revealed that the R406W mutation exhibits a decreased phosphorylation at T205, T212, and the PHF1 epitope (S396/S404; reductions of 40–65%) as compared with wt tau, whereas other sites were not affected or only slightly affected (T181, S199, S214, and S262). PubMed:21339331

Western blot analyses of brain homogenates show that (−)-nilvadipine significantly reduces Tau phosphorylation in AT8 (phosphorylated Ser-199/Ser-202/Thr-205) and PHF-1 (phosphorylated Ser-396/Ser-404) epitopes PubMed:25331948

Primary hippocampal neuron cells at different concentrations (0, 50, 100, 200 lg/ml) of glucose–BSA were incubated together for 24 h, and then thr205- phosphorylated tau was estimated by the western immunoblotting method. Western blot analysis of each experimental group showed that glucose–BSA promoted tau thr205-phosphorylation in a concentration-dependent manner (Fig. 3(a)). In the present study, it was also shown that 100 nM GLP-1 or Ex-4 treatment reduced tau hyperphosphorylation induced by glucose–BSA (Fig. 3(b, c)). PubMed:24183963

Endogenous miR-195 was knocked down using over-expression of its antisense molecule (pre-AMO-miR-195) via a lentivirus (lenti-pre-AMO-miR-195); this knockdown increased the tau phosphorylation at Ser202/Thr205, Ser262, Thr231, Ser422, and the Cdk5/p25 activation, but over-expression of miR-195 using lenti-pre-miR-195 decreased the tau phosphorylation and Cdk5/p25 activation. PubMed:26118667

Here, we found that prephosphorylation by PKA promotes GSK-3beta-catalyzed tau phosphorylation at Thr181, Ser199, Ser202, Thr205, Thr217, Thr231, Ser396 and Ser422, but inhibits its phosphorylation at Thr212 and Ser404. In contrast, the prephosphorylation had no significant effect on its subsequent phosphorylation by cdk5 at Thr181, Ser199, Thr205, Thr231 and Ser422; inhibited it at Ser202, Thr212, Thr217 and Ser404; and slightly promoted it at Ser396. PubMed:17078951

Surprisingly, we show that tau acetylation alters phosphorylation at residues S202/T205 (comprising the AT8 epitope), indicating acetylation-dephosphorylation cross-talk. Using a series of biochemical approaches, we found that K280/K281 acetylation impaired tau-mediated MT assembly function and also significantly enhanced tau aggregation. We also demonstrate that methylene blue, a reported tau aggregation inhibitor, modulates tau acetylation, a novel mechanism of action for this class of compounds PubMed:28287136

Here, we found that prephosphorylation by PKA promotes GSK-3beta-catalyzed tau phosphorylation at Thr181, Ser199, Ser202, Thr205, Thr217, Thr231, Ser396 and Ser422, but inhibits its phosphorylation at Thr212 and Ser404. In contrast, the prephosphorylation had no significant effect on its subsequent phosphorylation by cdk5 at Thr181, Ser199, Thr205, Thr231 and Ser422; inhibited it at Ser202, Thr212, Thr217 and Ser404; and slightly promoted it at Ser396. PubMed:17078951

Primary hippocampal neuron cells at different concentrations (0, 50, 100, 200 lg/ml) of glucose–BSA were incubated together for 24 h, and then thr205- phosphorylated tau was estimated by the western immunoblotting method. Western blot analysis of each experimental group showed that glucose–BSA promoted tau thr205-phosphorylation in a concentration-dependent manner (Fig. 3(a)). In the present study, it was also shown that 100 nM GLP-1 or Ex-4 treatment reduced tau hyperphosphorylation induced by glucose–BSA (Fig. 3(b, c)). PubMed:24183963

Here, we found that prephosphorylation by PKA promotes GSK-3beta-catalyzed tau phosphorylation at Thr181, Ser199, Ser202, Thr205, Thr217, Thr231, Ser396 and Ser422, but inhibits its phosphorylation at Thr212 and Ser404. In contrast, the prephosphorylation had no significant effect on its subsequent phosphorylation by cdk5 at Thr181, Ser199, Thr205, Thr231 and Ser422; inhibited it at Ser202, Thr212, Thr217 and Ser404; and slightly promoted it at Ser396. PubMed:17078951

Filamentous, but not soluble, forms of wild-type tau inhibit anterograde, kinesin-based fast axonal transport (FAT) by activating axonal protein phosphatase 1 (PP1) and glycogen synthase kinase 3 (GSK3), independent of microtubule binding. Amino acids 2-18 of tau, comprising a phosphatase-activating domain (PAD), are necessary and sufficient for activation of this pathway. Various pathogenic forms of tau displaying increased exposure of PAD inhibited anterograde FAT in squid axoplasm. Immunohistochemical studies using a novel PAD-specific monoclonal antibody in human postmortem tissue indicated that increased PAD exposure represents an early pathogenic event in AD that closely associates in time with AT8 immunoreactivity. We propose a model of pathogenesis in which disease-associated changes in tau conformation lead to increased exposure of PAD, activation of PP1-GSK3, and inhibition of FAT PubMed:21734277

For AT8, which recognises phosphorylated S202 and T205 in tau, SAPK3/p38gamma gave the strongest labelling PubMed:11943212

The acetyl-mimicking mutant K174Q slows tau turnover and induces cognitive deficits in vivo. Acetyltransferase p300-induced tau acetylation is inhibited by salsalate and salicylate, which enhance tau turnover and reduce tau levels. In the PS19 transgenic mouse model of FTD, administration of salsalate after disease onset inhibited p300 activity, lowered levels of total tau and tau acetylated at K174, rescued tau-induced memory deficits and prevented hippocampal atrophy. PubMed:26390242

Acute treatment of rTg4510 mice with an O-GlcNAcase inhibitor transiently reduced tau phosphorylation at epitopes implicated in tau pathology. More importantly, long-term inhibitor treatment strongly increased tau O-GlcNAcylation, reduced the number of dystrophic neurons, and protected against the formation of pathological tau species without altering the phosphorylation of non-pathological tau. PubMed:22833681

We studied underlying pathomechanisms in tauopathies using pR5 mice that express the P301L tau mutation found in familial forms of frontotemporal dementia. In a longitudinal study we investigated the functional status of glycogen synthase kinase-3 and correlated it with the appearance of distinct tau phospho-epitopes. Neurons displaying increases in activating phosphorylation of glycogen synthase kinase-3α/β at tyrosine 279/216 also showed an intense rather than moderate AT8 (phospho-Ser202/Thr205 tau) immunoreactivity, and immunoreactivity for AT100 (phospho-Ser212/Thr214 tau) and phosphorylated Ser422, phospho-epitopes associated with fibrillar tau pathology. PubMed:23294633

We developed a transgenic mouse, named TPR50, harboring human P301S tau. Tau phosphorylation in the hippocampus of TPR50 mice increased with age, particularly at S202/T205. Therefore, cognitive dysfunction in TPR50 mice may result from early MT dysfunction and impaired axonal transport rather than accumulation of insoluble tau and neurodegeneration. PubMed:24406748

Epitopes S198, S199, S202, T205, S422 (Lund 2013) PubMed:18239272

Missorted dendritic MAPT showed phosphorylation mainly at the 12E8 sites upon treatment with either the autophagy inhibitor wortmannin (Fig. 4B; 57.2±9.4% dendrites) or the proteasomal inhibitor epoxomicin (Fig. 4C, 62.9±7.4% dendrites) (Fig. 4A-C, quantification in Fig. 4D), but not at the AT8 and the PHF1 (p-S396/p-S404) sites (Fig. S5, Fig 4D). PubMed:30145931

Missorted dendritic MAPT showed phosphorylation mainly at the 12E8 sites upon treatment with either the autophagy inhibitor wortmannin (Fig. 4B; 57.2±9.4% dendrites) or the proteasomal inhibitor epoxomicin (Fig. 4C, 62.9±7.4% dendrites) (Fig. 4A-C, quantification in Fig. 4D), but not at the AT8 and the PHF1 (p-S396/p-S404) sites (Fig. S5, Fig 4D). PubMed:30145931

In addition, it has been reported that in cultured neurons, Aβ oligomers induce MAPT missorting into the somatodendritic compartment, and the missorted MAPT is phosphorylated mainly at the 12E8 (p-S262/p-S356) and AT8 (p-S202/p-T205) sites [6]. PubMed:30145931

We also checked the phosphorylation of tau at other sites (e.g., using the antibody AT8, reacting only with the endogenous tau) and did not observe an increase in the phosphorylation. PubMed:28528849

For example, both soluble and insoluble tau from transgenic worms generated by Kraemer and colleagues (66) was phosphorylated at most of the sites examined; however, the insoluble tau did not show reactivity at the AT8 and pS422 epitopes, which are pronounced in human AD tau. PubMed:29191965

We observed that synaptic activation promoted EGFP-Tau T205A translocation to the spine but FRAP experiments revealed a shorter tau turnover time in the spine (Fig. 9B), whereas Abetao driven translocation to the spine was no longer observable in EGFP-Tau S404A-transfected neurons (Fig. 9F,G). These experiments highlight the pivotal role of these phosphorylations in tau translocation features to the spine. PubMed:24760868

TNT1 also co-localizes in tissue with the phospho-epitope defined by the AT8 antibody, indicating that PAD exposure represents an early event in AD pathology PubMed:22817713

TNT1 also co-localizes in tissue with the phospho-epitope defined by the AT8 antibody, indicating that PAD exposure represents an early event in AD pathology PubMed:22817713

Here, we found that prephosphorylation by PKA promotes GSK-3beta-catalyzed tau phosphorylation at Thr181, Ser199, Ser202, Thr205, Thr217, Thr231, Ser396 and Ser422, but inhibits its phosphorylation at Thr212 and Ser404. In contrast, the prephosphorylation had no significant effect on its subsequent phosphorylation by cdk5 at Thr181, Ser199, Thr205, Thr231 and Ser422; inhibited it at Ser202, Thr212, Thr217 and Ser404; and slightly promoted it at Ser396. PubMed:17078951

Endogenous miR-195 was knocked down using over-expression of its antisense molecule (pre-AMO-miR-195) via a lentivirus (lenti-pre-AMO-miR-195); this knockdown increased the tau phosphorylation at Ser202/Thr205, Ser262, Thr231, Ser422, and the Cdk5/p25 activation, but over-expression of miR-195 using lenti-pre-miR-195 decreased the tau phosphorylation and Cdk5/p25 activation. PubMed:26118667

Acute treatment of rTg4510 mice with an O-GlcNAcase inhibitor transiently reduced tau phosphorylation at epitopes implicated in tau pathology. More importantly, long-term inhibitor treatment strongly increased tau O-GlcNAcylation, reduced the number of dystrophic neurons, and protected against the formation of pathological tau species without altering the phosphorylation of non-pathological tau. PubMed:22833681

We developed a transgenic mouse, named TPR50, harboring human P301S tau. Tau phosphorylation in the hippocampus of TPR50 mice increased with age, particularly at S202/T205. Therefore, cognitive dysfunction in TPR50 mice may result from early MT dysfunction and impaired axonal transport rather than accumulation of insoluble tau and neurodegeneration. PubMed:24406748

We studied underlying pathomechanisms in tauopathies using pR5 mice that express the P301L tau mutation found in familial forms of frontotemporal dementia. In a longitudinal study we investigated the functional status of glycogen synthase kinase-3 and correlated it with the appearance of distinct tau phospho-epitopes. Neurons displaying increases in activating phosphorylation of glycogen synthase kinase-3α/β at tyrosine 279/216 also showed an intense rather than moderate AT8 (phospho-Ser202/Thr205 tau) immunoreactivity, and immunoreactivity for AT100 (phospho-Ser212/Thr214 tau) and phosphorylated Ser422, phospho-epitopes associated with fibrillar tau pathology. PubMed:23294633

In addition, it has been reported that in cultured neurons, Aβ oligomers induce MAPT missorting into the somatodendritic compartment, and the missorted MAPT is phosphorylated mainly at the 12E8 (p-S262/p-S356) and AT8 (p-S202/p-T205) sites [6]. PubMed:30145931

For example, both soluble and insoluble tau from transgenic worms generated by Kraemer and colleagues (66) was phosphorylated at most of the sites examined; however, the insoluble tau did not show reactivity at the AT8 and pS422 epitopes, which are pronounced in human AD tau. PubMed:29191965