Results 1 to 10 of about 5,703 (96)

Promoter methylation of the hMLH1 gene and protein expression of human mutL homolog 1 and human mutS homolog 2 in resected esophageal squamous cell carcinoma [PDF]

Journal of Thoracic and Cardiovascular Surgery, 2005
Aberrant expression of mismatch repair genes, such as human mutL homolog 1 (hMLH1) and human mutS homolog 2 (hMSH2), are common in some human cancers, and promoter methylation is believed to inactivate expression of hMLH1. We investigated whether promoter methylation is involved in loss of hMLH1 protein and whether aberrant expression of hMLH1 and ...
Ching Tzao, Yi-Ching Wang, Ho-Jui Tung   +2 more
exaly   +3 more sources

Characterization of a novel MSH2 variant in Lynch syndrome: clinical data and complementary bioinformatics assessment [PDF]

Einstein (São Paulo)
Objective To describe the clinical characteristics and perform a multi-step bioinformatics evaluation of the pathogenicity of NM_000251.3(MSH2):c.1894_1898del (p.Ile633Lysfs*9), an MSH2 germline variant detected in a family with Lynch syndrome. Methods
Anisse Marques Chami, Thalia Rodrigues de Souza Zózimo, Carolina Guimarães Ramos Matosinho, Agnaldo Lopes da Silva-Filho, Maria Raquel Santos Carvalho, Letícia da Conceição Braga   +5 more
doaj   +2 more sources

The expression of Mutl Protein Homolog 1 (MLH1) and Muts Homolog 2 (MSH2) in colorectal carcinoma: An immunohistochemical study

Indian Journal of Pathology and Microbiology
Background: The development of colorectal carcinoma is a complicated multistep process that involves the accumulation of mutations in tumor suppressor genes and oncogenes.
Eshita Garg, Manisha Sharma, Manas Madan, Gurleen Kaur, Karamjit S Gill, Ishaan Khanna   +5 more
doaj   +3 more sources

Human MutY Homolog, a DNA Glycosylase Involved in Base Excision Repair, Physically and Functionally Interacts with Mismatch Repair Proteins Human MutS Homolog 2/Human MutS Homolog 6 [PDF]

Journal of Biological Chemistry, 2002
Adenines mismatched with guanines or 7,8-dihydro-8-oxo-deoxyguanines that arise through DNA replication errors can be repaired by either base excision repair or mismatch repair. The human MutY homolog (hMYH), a DNA glycosylase, removes adenines from these mismatches. Human MutS homologs, hMSH2/hMSH6 (hMutSalpha), bind to the mismatches and initiate the
Dau-Yin Chang, A-Lien Lu
exaly   +3 more sources

Clinical Discovery and Molecular Analysis of Two Novel MSH2 Gene Mutations (p.Ala771Gly and p.Val797Gly) in Saudi Colorectal Cancer Patients: Potential Implications for Tumorigenesis [PDF]

Health Science Reports
Background and Aims Colorectal cancer (CRC) is a serious global health problem, ranking first in men and third in women among all cancers worldwide.
Mahmood Rasool, Absarul Haque, Mohammed Alharthi, Tainus Ali, Sajjad Karim, Loubna Siraj Mira, Fahd Al‐Abbasi, Murad Aljiffry, Mohammed Ghunaim, Abdulrahman Sibiany, Peter Natesan Pushparaj   +10 more
doaj   +2 more sources

Expression of PD-L1 in Microsatellite Instability High Tumours: A Retrospective Study [PDF]

Journal of Clinical and Diagnostic Research, 2023
Introduction: Microsatellite Instability (MSI) is the hallmark of Lynch syndrome/Constitutional Mismatch Repair Deficiency (CMMRD) and is also found in many sporadic cancers like colorectal cancer, endometrial, gastric, small intestine, urothelial ...
Dinisha Einstien, Gayathri Devi Thanigaimani, KS Mouleeswaran, A Prathiba, G Sarumathy, John Vergilin   +5 more
doaj   +1 more source

Mismatch repair proteins play a role in ATR activation upon temozolomide treatment in MGMT-methylated glioblastoma

Scientific Reports, 2022
The methylation status of the O6-methylguanine methyltransferase (MGMT) gene promoter has been widely accepted as a prognostic biomarker for treatment with the alkylator, temozolomide (TMZ). In the absence of promoter methylation, the MGMT enzyme removes
Sachita Ganesa, Amrita Sule, Ranjini K. Sundaram, Ranjit S. Bindra   +3 more
doaj   +1 more source

The CtIP-CtBP1/2-HDAC1-AP1 transcriptional complex is required for the transrepression of DNA damage modulators in the pathogenesis of osteosarcoma

Translational Oncology, 2022
Most tumors, including osteosarcomas, have deficiencies in DNA damage repair. However, the regulatory mechanisms underlying dysregulation of DNA damage repair genes are still being investigated.
Xun Chen, Qian Zhang, Xiaoqian Dang, Jinzhu Fan, Tao Song, Zhong Li, Ning Duan, Wentao Zhang   +7 more
doaj   +1 more source

RNA-binding protein with serine-rich domain 1 regulates microsatellite instability of uterine corpus endometrial adenocarcinoma

Clinics, 2021
OBJECTIVE: To determine the role of RNA-binding protein with serine-rich domain 1 (RNPS1) in uterine corpus endometrial carcinoma (UCEC), the role of RNPS1 knockdown in UCEC development in vitro and in vivo, and the relationship between RNPS1 and ...
Xiaojuan Liu, Hui Ma, Lisha Ma, Kun Li, Yanhua Kang   +4 more
doaj   +1 more source

BRAF V600E and Mismatch Repair Proteins Expression in Sporadic Young-onset Colorectal Cancer in Kelantan, Malaysia

Oman Medical Journal, 2021
Objectives: We sought to determine the immunohistochemistry expression of mismatch repair (MMR) and BRAF V600E proteins in sporadic young-onset colorectal cancer (CRC) and their association with clinicopathological features in the Kelantan population ...
Zubaidah Saizul, Ab Hamid Siti-Azrin, Andee Dzulkarnaen Zakaria, Aniza Hassan, Wan Faiziah Wan Abdul Rahman, and Nur Asyilla Che Jalil   +5 more
doaj   +1 more source