Abstract
Huntington's disease (HD) is a distressing, innate neurodegenerative disease that descends from CAG repeat expansion in the huntingtin gene causing behavioral changes, motor dysfunction, and dementia in children and adults. Mutation in huntingtin (HTT) protein has been suggested to cause neuron loss in the cortex and striatum through various mechanisms, including abnormal regulation of transcription, proteasomal dysfunction, posttranslational modification, and other events regulating toxicity. Pathogenesis of HD involves cleavage of the huntingtin protein followed by the neuronal accumulation of its aggregated form. Several research groups made possible efforts to reduce huntingtin gene expression, protein accumulation, and protein aggregation using inhibitors and molecular chaperones as developing drugs against HD. Herein, we review the mechanism proposed towards the formation of HTT protein aggregation and the impact of therapeutic strategies for the treatment of HD.
Keywords: HTT mutation, protein aggregation, molecular chaperons, huntington’s disease, neurodegenerative disease, dementia.
Graphical Abstract
[http://dx.doi.org/10.1146/annurev.neuro.23.1.217] [PMID: 10845064]
[http://dx.doi.org/10.1016/B978-0-12-385883-2.00010-2]
[http://dx.doi.org/10.1002/mds.25075] [PMID: 22692795]
[http://dx.doi.org/10.1038/35000576] [PMID: 10676962]
[http://dx.doi.org/10.1136/jnnp.2006.103309] [PMID: 17178819]
[http://dx.doi.org/10.1007/s11910-011-0215-x] [PMID: 21861097]
[http://dx.doi.org/10.1016/B978-0-12-381328-2.00014-6]
[http://dx.doi.org/10.1016/B978-0-12-801942-9.00008-2]
[http://dx.doi.org/10.1021/acs.biochem.6b00936] [PMID: 28170216]
[http://dx.doi.org/10.1093/hmg/ddr023] [PMID: 21245084]
[http://dx.doi.org/10.1038/aps.2018.11] [PMID: 29620053]
[http://dx.doi.org/10.1016/j.nbd.2011.07.001] [PMID: 21820514]
[http://dx.doi.org/10.1016/j.freeradbiomed.2013.04.016] [PMID: 23602910]
[http://dx.doi.org/10.1016/j.neuroscience.2012.05.043] [PMID: 22633949]
[http://dx.doi.org/10.1038/cddis.2011.112] [PMID: 22071633]
[http://dx.doi.org/10.1093/hmg/ddv080] [PMID: 25740845]
[http://dx.doi.org/10.1093/nar/gnf082] [PMID: 12177311]
[http://dx.doi.org/10.1002/ajmg.b.30992] [PMID: 19548255]
[http://dx.doi.org/10.1136/jmg.31.5.377] [PMID: 8064815]
[http://dx.doi.org/10.1136/jmg.25.9.589] [PMID: 2972838]
[http://dx.doi.org/10.1038/s41598-019-55202-x] [PMID: 31844074]
[http://dx.doi.org/10.1001/jamaneurol.2019.2368] [PMID: 31403680]
[http://dx.doi.org/10.3174/ajnr.A6168] [PMID: 31467235]
[http://dx.doi.org/10.3389/fmolb.2019.00020] [PMID: 31001537]
[http://dx.doi.org/10.1021/bi500300c] [PMID: 24921664]
[http://dx.doi.org/10.1111/jnc.14853] [PMID: 31418858]
[http://dx.doi.org/10.1016/j.celrep.2015.08.060] [PMID: 26387956]
[http://dx.doi.org/10.1016/j.prdoa.2020.100056] [PMID: 34316639]
[http://dx.doi.org/10.1074/jbc.M110.160218] [PMID: 20864533]
[http://dx.doi.org/10.3389/fnins.2017.00185] [PMID: 28428740]
[http://dx.doi.org/10.1146/annurev-pathmechdis-012418-012857] [PMID: 30089230]
[http://dx.doi.org/10.1155/2012/837015] [PMID: 23050151]
[http://dx.doi.org/10.3389/fnmol.2014.00077] [PMID: 25324717]
[http://dx.doi.org/10.1089/ars.2012.4928] [PMID: 23641925]
[http://dx.doi.org/10.1242/dmm.031930] [PMID: 29419417]
[http://dx.doi.org/10.1016/j.celrep.2019.02.008] [PMID: 30811996]
[http://dx.doi.org/10.1038/s41598-019-55177-9] [PMID: 31822756]
[http://dx.doi.org/10.1101/cshperspect.a024240] [PMID: 27940602]
[http://dx.doi.org/10.1038/sj.embor.7400250] [PMID: 15459747]
[PMID: 21841917]
[http://dx.doi.org/10.5772/32025]
[http://dx.doi.org/10.1136/jnnp-2018-318854] [PMID: 30567722]
[http://dx.doi.org/10.1016/j.neuron.2015.02.026] [PMID: 25789755]
[http://dx.doi.org/10.1073/pnas.1818042116] [PMID: 31015293]
[http://dx.doi.org/10.1093/hmg/ddy363] [PMID: 30312396]
[http://dx.doi.org/10.1016/j.arr.2018.11.006] [PMID: 30502498]
[http://dx.doi.org/10.1074/jbc.M114.603332] [PMID: 25505179]
[http://dx.doi.org/10.5607/en.2014.23.1.36] [PMID: 24737938]
[http://dx.doi.org/10.3390/ijms18071568] [PMID: 28753941]
[http://dx.doi.org/10.1074/jbc.M113.523696] [PMID: 24407293]
[http://dx.doi.org/10.3233/JHD-180311] [PMID: 30594931]
[http://dx.doi.org/10.1016/j.chembiol.2016.11.009] [PMID: 27989401]
[http://dx.doi.org/10.1016/j.nbd.2017.12.015] [PMID: 29274742]
[http://dx.doi.org/10.1016/j.ymthe.2016.11.010] [PMID: 28129107]
[http://dx.doi.org/10.1016/j.celrep.2017.04.029] [PMID: 28467905]
[http://dx.doi.org/10.1038/mtna.2015.38] [PMID: 26623938]
[http://dx.doi.org/10.1038/mtna.2016.7] [PMID: 27003755]
[http://dx.doi.org/10.1038/mtna.2015.20] [PMID: 26125484]
[http://dx.doi.org/10.1073/pnas.1705372114] [PMID: 29162692]
[http://dx.doi.org/10.1038/s41598-017-05336-7] [PMID: 28698602]
[http://dx.doi.org/10.1172/JCI80743] [PMID: 25844897]
[http://dx.doi.org/10.1016/j.bbrc.2017.08.126] [PMID: 28864412]
[http://dx.doi.org/10.1016/j.cellsig.2016.12.005] [PMID: 27988204]
[http://dx.doi.org/10.1021/acsomega.7b01472] [PMID: 29399649]
[http://dx.doi.org/10.1172/JCI83185] [PMID: 27721240]
[http://dx.doi.org/10.1016/j.ajhg.2015.12.018] [PMID: 26849111]
[http://dx.doi.org/10.1016/j.neurobiolaging.2014.11.014] [PMID: 25619660]
[http://dx.doi.org/10.1038/s41598-017-01510-z] [PMID: 28465506]
[http://dx.doi.org/10.1073/pnas.1702237114] [PMID: 28400517]
[http://dx.doi.org/10.1515/bmc-2015-0001] [PMID: 25741791]
[http://dx.doi.org/10.1016/j.jmb.2018.03.017] [PMID: 29601786]
[http://dx.doi.org/10.1002/jcc.21256] [PMID: 19399780]
[http://dx.doi.org/10.1093/jmcb/mju007] [PMID: 24620031]
[http://dx.doi.org/10.1155/2016/6247867] [PMID: 28096892]
[http://dx.doi.org/10.1155/2012/606172] [PMID: 22899913]
[http://dx.doi.org/10.1016/j.cplett.2018.12.042]
[http://dx.doi.org/10.1016/j.jmb.2014.07.016] [PMID: 25083917]
[http://dx.doi.org/10.1002/wcms.4]
[http://dx.doi.org/10.1021/jp2114576] [PMID: 22280505]
[http://dx.doi.org/10.1016/j.sbi.2015.11.001] [PMID: 26638022]
[http://dx.doi.org/10.1371/journal.pcbi.1000772] [PMID: 20442863]
[http://dx.doi.org/10.1002/prot.25288]
[http://dx.doi.org/10.1016/j.pbiomolbio.2018.12.003] [PMID: 30543828]
[http://dx.doi.org/10.1016/j.jns.2019.116425] [PMID: 31422280]
[http://dx.doi.org/10.1007/978-1-4939-7811-3_5] [PMID: 29744830]
[http://dx.doi.org/10.1007/s00894-012-1712-9] [PMID: 23288093]
[http://dx.doi.org/10.1016/j.bpj.2016.01.015] [PMID: 26958885]
[http://dx.doi.org/10.5772/1470]
[http://dx.doi.org/10.3389/fneur.2019.00710] [PMID: 31333565]
[http://dx.doi.org/10.1111/ene.13413] [PMID: 28817209]
[http://dx.doi.org/10.1002/mds.26331] [PMID: 26226924]
[http://dx.doi.org/10.1007/s40265-016-0670-4] [PMID: 27988871]
[http://dx.doi.org/10.1007/s13311-014-0304-z] [PMID: 25252936]
[http://dx.doi.org/10.1002/mds.26260] [PMID: 26207615]
[http://dx.doi.org/10.1007/s13311-013-0244-z] [PMID: 24366610]
[http://dx.doi.org/10.1371/journal.pone.0173872] [PMID: 28323838]
[http://dx.doi.org/10.7554/eLife.38744] [PMID: 30179155]
[http://dx.doi.org/10.1093/hmg/ddw045] [PMID: 26908605]
[http://dx.doi.org/10.20944/preprints201912.0261.v1]
[http://dx.doi.org/10.1007/s12035-019-01847-8] [PMID: 31879858]
[http://dx.doi.org/10.1016/S1474-4422(18)30391-0] [PMID: 30563778]
[http://dx.doi.org/10.1186/s13041-019-0456-1] [PMID: 30961637]
[http://dx.doi.org/10.1016/j.nbd.2019.104560] [PMID: 31419548]
[http://dx.doi.org/10.1172/JCI120616] [PMID: 31063986]
[http://dx.doi.org/10.1016/j.nbd.2015.01.002] [PMID: 25662335]
[http://dx.doi.org/10.1093/hmg/ddu151] [PMID: 24698979]
[http://dx.doi.org/10.3389/fimmu.2020.00337] [PMID: 32161599]
[http://dx.doi.org/10.1517/14656566.2016.1109630] [PMID: 26536068]
[http://dx.doi.org/10.1016/j.omtn.2019.07.009] [PMID: 31465962]
[http://dx.doi.org/10.1016/j.neuron.2019.01.039] [PMID: 30844400]
[http://dx.doi.org/10.1016/j.drudis.2014.09.011] [PMID: 25256777]
[http://dx.doi.org/10.1038/s41591-019-0478-3] [PMID: 31263285]
[http://dx.doi.org/10.1016/j.jmgm.2017.04.019] [PMID: 28458007]
[http://dx.doi.org/10.1080/08927022.2019.1660778]
[http://dx.doi.org/10.1007/s10822-018-0175-1] [PMID: 30368622]
[http://dx.doi.org/10.1007/s12031-020-01569-w] [PMID: 32415434]
[http://dx.doi.org/10.1039/C7MB00106A] [PMID: 28621357]
[http://dx.doi.org/10.1002/biof.1441] [PMID: 30260512]
[http://dx.doi.org/10.1001/jama.2011.1360] [PMID: 21954480]
[http://dx.doi.org/10.1002/jnr.22017] [PMID: 19185022]
[http://dx.doi.org/10.1186/1472-6882-13-121] [PMID: 23721591]
[http://dx.doi.org/10.1111/j.1471-4159.2009.06331.x] [PMID: 19682208]
[http://dx.doi.org/10.1089/jmf.2012.2698] [PMID: 24138168]
[http://dx.doi.org/10.1111/j.1600-079X.2004.00163.x] [PMID: 15485551]
[http://dx.doi.org/10.1016/j.ejphar.2009.04.058] [PMID: 19445928]
[http://dx.doi.org/10.1038/aps.2014.107] [PMID: 25640478]
[http://dx.doi.org/10.1186/s12974-016-0779-0] [PMID: 28086917]
[http://dx.doi.org/10.1016/j.etp.2008.11.002] [PMID: 19108999]
[http://dx.doi.org/10.3389/fphys.2020.00361] [PMID: 32411012]
[http://dx.doi.org/10.1111/j.1600-0447.2011.01713.x] [PMID: 21585343]
[http://dx.doi.org/10.1074/jbc.M112.382226] [PMID: 22648412]
[http://dx.doi.org/10.1080/1028415X.2020.1721645] [PMID: 32093571]
[http://dx.doi.org/10.1007/s11011-019-00405-4] [PMID: 30850940]
[http://dx.doi.org/10.1007/s12017-018-8482-1] [PMID: 29435951]
[http://dx.doi.org/10.1093/hmg/ddq460] [PMID: 20952447]
[http://dx.doi.org/10.2741/S425] [PMID: 25961687]
[http://dx.doi.org/10.1016/j.ejphar.2021.174492] [PMID: 34516952]
[http://dx.doi.org/10.1038/srep18736] [PMID: 26728250]
[http://dx.doi.org/10.2174/1570159X18666200522201123] [PMID: 32442088]
[http://dx.doi.org/10.1093/hmg/ddz247] [PMID: 31630202]
[http://dx.doi.org/10.3390/antiox9080706] [PMID: 32759751]
[http://dx.doi.org/10.1016/j.biopha.2018.12.151] [PMID: 30616078]
[http://dx.doi.org/10.2217/nnm-2020-0239] [PMID: 33410329]
[http://dx.doi.org/10.1021/acsami.6b06853] [PMID: 27427935]
[http://dx.doi.org/10.1007/s12035-021-02397-8] [PMID: 33904021]
[http://dx.doi.org/10.5455/jice.20140903012921] [PMID: 26401371]
[http://dx.doi.org/10.1016/j.neulet.2008.10.020] [PMID: 18938211]
[http://dx.doi.org/10.1097/00004850-200401000-00010] [PMID: 15101572]
[http://dx.doi.org/10.1016/j.phymed.2021.153883] [PMID: 34952508]
[http://dx.doi.org/10.1016/j.jgr.2021.11.003]
[http://dx.doi.org/10.1007/s11626-021-00595-1] [PMID: 34128157]
[http://dx.doi.org/10.1038/s41401-020-00558-4] [PMID: 33214696]
[http://dx.doi.org/10.1016/j.jep.2020.112876] [PMID: 32305638]
[http://dx.doi.org/10.1007/s11064-015-1658-2] [PMID: 26160706]
[http://dx.doi.org/10.4103/0973-7847.120505] [PMID: 24347915]
[http://dx.doi.org/10.1016/j.bbr.2009.08.028] [PMID: 19716383]
[http://dx.doi.org/10.1007/s11010-015-2525-9] [PMID: 26280522]
[http://dx.doi.org/10.1016/j.neuint.2011.08.022] [PMID: 21945202]
[http://dx.doi.org/10.1016/j.bbadis.2012.11.018]
[http://dx.doi.org/10.1016/j.jns.2013.07.498]
[http://dx.doi.org/10.1021/acsomega.0c03266] [PMID: 33163776]
[http://dx.doi.org/10.1089/jmf.2008.0028] [PMID: 19627208]
[http://dx.doi.org/10.1093/hmg/ddl210] [PMID: 16893904]
[http://dx.doi.org/10.1016/j.expneurol.2011.08.014] [PMID: 21907197]
[http://dx.doi.org/10.1021/acsami.7b06510] [PMID: 28632387]
[http://dx.doi.org/10.1371/journal.pone.0090202] [PMID: 24587280]
[http://dx.doi.org/10.1039/C2MD20112G]
[http://dx.doi.org/10.1038/nm985] [PMID: 14730359]
[http://dx.doi.org/10.1038/mtm.2016.37] [PMID: 27408903]
[http://dx.doi.org/10.1016/j.omtn.2017.04.011] [PMID: 28624208]
[http://dx.doi.org/10.1038/mt.2013.289] [PMID: 24390280]
[http://dx.doi.org/10.1056/NEJMoa1900907] [PMID: 31059641]
[http://dx.doi.org/10.1002/stem.2747] [PMID: 29178352]
[http://dx.doi.org/10.1002/sctm.19-0248] [PMID: 31997581]
[http://dx.doi.org/10.1038/mt.2016.12] [PMID: 26765769]
[http://dx.doi.org/10.1111/ejn.13275] [PMID: 27177616]