Results 31 to 40 of about 208,585 (280)

DNA Mismatch Repair [PDF]

EcoSal Plus, 2012
DNA mismatch repair (MMR) corrects replication errors in newly synthesized DNA. It also has an antirecombination action on heteroduplexes that contain similar but not identical sequences. This review focuses on the genetics and development of MMR and not on the latest biochemical mechanisms.
openaire   +2 more sources

The THE FREQUENCY OF MISMATCH REPAIR DEFICIENCY IN COLORECTAL CARCINOMA DETERMINED BY IMMUNOHISTOCHEMISTRY

Pakistan Armed Forces Medical Journal, 2021
Objective: To determine the frequency of mismatch repair deficiency in colorectal carcinoma determined by immunohistochemistry. Study Design: Cross-sectional study.
Maria Naseem, Muhammad Asif, Hafeez Ud Din, Muhammad Tahir Khadim, Ahmed Ahson Khan, Shahid Jamal, Iman Shoaib   +6 more
doaj   +1 more source

Statistical evaluation and biological interpretation of non-random abundance in the E. coli K-12 genome of tetra- and pentanucleotide sequences related to VSP DNA mismatch repair [PDF]

, 1992
The abundance of all tetra- and pentanucleotide sequences is calculated for a set of DNA sequence data comprising 767,393 nucleotides of the E. coli K-12 genome. Observed frequencies are compared to those expected from a Markov chain prediction algorithm.
Merkl, Rainer, Kröger, Manfred, Rice, Peter, Fritz, Hans Joachim   +3 more
core   +1 more source

Explosive mutation accumulation triggered by heterozygous human Pol ε proofreading-deficiency is driven by suppression of mismatch repair

eLife, 2018
Tumors defective for DNA polymerase (Pol) ε proofreading have the highest tumor mutation burden identified. A major unanswered question is whether loss of Pol ε proofreading by itself is sufficient to drive this mutagenesis, or whether additional factors
Karl P Hodel, Richard de Borja, Erin E Henninger, Brittany B Campbell, Nathan Ungerleider, Nicholas Light, Tong Wu, Kimberly G LeCompte, A Yasemin Goksenin, Bruce A Bunnell, Uri Tabori, Adam Shlien, Zachary F Pursell   +12 more
doaj   +1 more source

DNA repair systems and the pathogenesis of Mycobacterium tuberculosis: varying activities at different stages of infection [PDF]

, 2010
Mycobacteria, including most of all MTB (Mycobacterium tuberculosis), cause pathogenic infections in humans and, during the infectious process, are exposed to a range of environmental insults, including the host's immune response.
Adams, Afanasev, Alina E. Gorna, Aly, Arnold, Bacon, Banu, Bergval, Betts, Boshoff, Boshoff, Bostanabad, Burney, Capelli, Chan, Chan, Cheng, Cooper, Cubillos-Ruiz, Darwin, Darwin, Das, Davis, Dos Vultos, Dubnau, Durbach, Farnia, Fennelly, Filliol, Fleischmann, Flint, Fontan, Friedberg, Frischkorn, Fu, Fu, Gaynor, Gordhan, Graham, Grishko, Guthlein, Hampshire, Hazbon, Hughes, Jain, Jaroslaw Dziadek, Jiao, Kapur, Karakousis, Karakousis, Karunkaran, Katti, Kesavan, Kim, Ko, Ko, Korycka-Machala, Krokan, Kurthkoti, Kurthkoti, Lari, Lever, Loudon, MacMicking, Malshetty, Martinez, Mokrousov, Moller, Movahedzadeh, Mulder, Munoz-Elias, Muttucumaru, Nguyen, Niemann, Nikolayevskyy, Nouvel, O'sullivan, Olano, Peccia, Peccia, Pitcher, Rachman, Rachman, Rad, Ramaswamy, Richard P. Bowater, Riley, Saito, Sander, Sassetti, Sassetti, Saunders, Schnappinger, Schwab, Sherman, Sinha, Sinha, Smeulders, Springer, Srivastava, Stephanou, Talaat, Talaat, Tang, Tsai, Venkatesh, Vilcheze, Voskuil, Voskuil, Waddell, Wanner, Warner, Weikert, Wiid, Wiseman, World Health Organization, Zaczek, Zainuddin   +117 more
core   +1 more source

Escherichia coli frameshift mutation rate depends on the chromosomal context but not on the GATC content near the mutation site. [PDF]

PLoS ONE, 2012
Different studies have suggested that mutation rate varies at different positions in the genome. In this work we analyzed if the chromosomal context and/or the presence of GATC sites can affect the frameshift mutation rate in the Escherichia coli genome.
Mariana A Martina, Elisa M E Correa, Carlos E Argaraña, José L Barra   +3 more
doaj   +1 more source

Equilibrium Distribution of Mutators in the Single Fitness Peak Model [PDF]

, 2003
This paper develops an analytically tractable model for determining the equilibrium distribution of mismatch repair deficient strains in unicellular populations. The approach is based on the single fitness peak (SFP) model, which has been used in Eigen's
D. Voet, M. Eigen, O. Tenaillon, S. Crotty   +3 more
core   +2 more sources

Blockade of LAG3 enhances responses of tumor-infiltrating T cells in mismatch repair-proficient liver metastases of colorectal cancer

OncoImmunology, 2018
Purpose: Liver metastasis develops in >50% of patients with colorectal cancer (CRC), and is a leading cause of CRC-related mortality. We aimed to identify which inhibitory immune checkpoint pathways can be targeted to enhance functionality of intra ...
Guoying Zhou, Lisanne Noordam, Dave Sprengers, Michail Doukas, Patrick P. C. Boor, Adriaan A. van Beek, Remco Erkens, Shanta Mancham, Dirk Grünhagen, Anand G. Menon, Johan F. Lange, Pim J. W. A. Burger, Alexandra Brandt, Boris Galjart, Cornelis Verhoef, Jaap Kwekkeboom, Marco J. Bruno   +16 more
doaj   +1 more source

Mismatch repair deficiency/microsatellite instability-high as a predictor for anti-PD-1/PD-L1 immunotherapy efficacy

Journal of Hematology & Oncology, 2019
Immunotherapies have led to substantial changes in cancer treatment and have been a persistently popular topic in cancer research because they tremendously improve the efficacy of treatment and survival of individuals with various cancer types.
Pengfei Zhao, Li Li, Xiaoyue Jiang, Qin Li   +3 more
doaj   +1 more source

Prevalence and prognostic role of mismatch repair gene defect in endometrial cancer patients

Tumor Biology, 2017
The study was to evaluate the prevalence of mismatch repair gene defect among Thai patients with endometrial cancer and its association with clinico-pathological features and survivals.
Siriwan Tangjitgamol, Thannaporn Kittisiam, Sujitra Tanvanich   +2 more
doaj   +1 more source