Search results for "MSH2"

showing 4 items of 24 documents

Phosphorylation of mismatch repair proteins MSH2 and MSH6 affecting MutSα mismatch-binding activity

2002

Mismatch repair (MMR) is involved in the removal of mispaired bases from DNA and thus plays an important role in the maintenance of genomic stability and the prevention of mutations and cancer. Moreover, MMR triggers genotoxicity and apoptosis upon processing of DNA lesions such as O6-methylguanine. Whereas the enzymology of MMR has been elucidated in great detail, only limited data are available concerning its regulation. Here we show that the major mismatch-binding proteins MSH2 and MSH6, forming the MutSalpha complex, are phosphorylated in vitro by protein kinase C and casein kinase II, but not by protein kinase A. Phosphorylation of MSH2 and MSH6 was also found within the cell, with MSH…

congenital hereditary and neonatal diseases and abnormalitiesDNA RepairDNA repairBase Pair MismatchMacromolecular SubstancesActive Transport Cell NucleusBiologyProtein Serine-Threonine KinasesArticleProto-Oncogene ProteinsGeneticsHumansProtein phosphorylationPhosphorylationProtein kinase ACasein Kinase IIneoplasmsProtein kinase CProtein Kinase CCell Nucleusnutritional and metabolic diseasesdigestive system diseasesDNA-Binding ProteinsMutS Homolog 2 ProteinBiochemistryMSH2PhosphorylationDNA mismatch repairCasein kinase 2HeLa Cells
researchProduct

Expression of hMLH1 and hMSH2 proteins in ameloblastomas and tooth germs

2017

Background Mismatch repair proteins (MMRPs) are a group of nuclear enzymes that participate in the repair of base mismatches that occur during DNA replication in all proliferating cells. The most studied MMRPs are hMSH2 and hMLH1, which are known to be highly expressed in normal tissues. A loss of MMRPs leads to the accumulation of DNA replication errors in proliferating cells. Ki-67 is a biomarker regarded to be the gold-standard tool for determining cell proliferation by immunohistochemical methods. The aim of this study was to investigate the immunohistochemical expression of hMLH1, hMSH2 and Ki-67 proteins in ameloblastomas and tooth germs, to contribute to the understanding of the deve…

congenital hereditary and neonatal diseases and abnormalitiesPathologymedicine.medical_specialtyhMSH2hMLH1Ameloblastoma03 medical and health sciencesTooth germsGERMEN DENTARIO0302 clinical medicinemedicineHumansHOMOLOGO 1 DE LA PROTEINA MutL (1)AmeloblastomaGeneral DentistryTooth GermsOral Medicine and PathologyAmeloblastomasbiologyCell growthResearchDNA replicationTooth Germnutritional and metabolic diseases030206 dentistry:CIENCIAS MÉDICAS [UNESCO]medicine.diseaseImmunohistochemistryJaw NeoplasmsANTIGENO Ki-67PROTEINA 2 HOMOLOGA a MutS (1)digestive system diseasesKi-67 AntigenMutS Homolog 2 ProteinAMELOBLASTOMAOtorhinolaryngology030220 oncology & carcinogenesisKi-67UNESCO::CIENCIAS MÉDICASbiology.proteinKi-67Biomarker (medicine)ImmunohistochemistrySurgeryDNA mismatch repairMutL Protein Homolog 1Medicina Oral Patología Oral y Cirugia Bucal
researchProduct

Survival by colon cancer stage and screening interval in Lynch syndrome:a prospective Lynch syndrome database report

2019

Abstract Background We previously reported that in pathogenic mismatch repair (path_MMR) variant carriers, the incidence of colorectal cancer (CRC) was not reduced when colonoscopy was undertaken more frequently than once every 3 years, and that CRC stage and interval since last colonoscopy were not correlated. Methods The Prospective Lynch Syndrome Database (PLSD) that records outcomes of surveillance was examined to determine survival after colon cancer in relation to the time since previous colonoscopy and pathological stage. Only path_MMR variants scored by the InSiGHT variant database as class 4 or 5 (clinically actionable) were included in the analysis. Results Ninety-nine path_MMR ca…

koloskopialcsh:QH426-470SurvivalColorectal cancer3122 CancersCancer stageColonoscopycomputer.software_genreMLH1lcsh:RC254-28203 medical and health sciences0302 clinical medicineCàncer colorectalmedicineColon cancer.Stage (cooking)Lynchin oireyhtymäGenetics (clinical)paksusuolisyöpäSurveillanceDatabasemedicine.diagnostic_testbusiness.industryResearchCancerColonoscòpiaColonoscopymedicine.diseaselcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogensColorectal cancerLynch syndromedigestive system diseases3. Good healthColon cancerMSH6lcsh:GeneticsLynch syndromeOncologyMSH2030220 oncology & carcinogenesis030211 gastroenterology & hepatologybusinesshenkiinjääminencomputer
researchProduct

Mortality by age, gene and gender in carriers of pathogenic mismatch repair gene variants receiving surveillance for early cancer diagnosis and treat…

2023

Background: The Prospective Lynch Syndrome Database (PLSD) collates information on carriers of pathogenic or likely pathogenic MMR variants (path_MMR) who are receiving medical follow-up, including colonoscopy surveillance, which aims to the achieve early diagnosis and treatment of cancers. Here we use the most recent PLSD cohort that is larger and has wider geographical representation than previous versions, allowing us to present mortality as an outcome, and median ages at cancer diagnoses for the first time.Methods: The PLSD is a prospective observational study without a control group that was designed in 2012 and updated up to October 2022. Data for 8500 carriers of path_MMR variants fr…

kuolleisuusperinnölliset tauditSurvivalMLH1riskitekijätGeneral MedicineMSH6sukupuoliMSH2Cancer riskLynch syndromePMS2syöpägeenitsyöpätauditLynchin oireyhtymäMortalityProspective studyilmaantuvuusikähenkiinjääminenkohorttitutkimus
researchProduct