Browsing by Advisor "Raghavan, Sathees C"
Now showing items 1-20 of 22
-
DNA Double-Strand Break Repair : Molecular Characterization of Classical and Alternative Nonhomologous End Joining in Mitochondrial and Cell-free Extracts
(2018-04-05)Maintenance of genomic integrity and stability is of prime importance for the survival of an organism. Upon exposure to different damaging agents, DNA acquires various lesions such as base modifications, single-strand ... -
Dynamics of DNA Double-strand Break Repair Pathways and Unlocking New Therapeutic Opportunities by Exploiting DSB Repair in Head and Neck Cancer
Among different types of DNA damage, DNA double-strand breaks (DSBs) are the most lethal, disrupting genome integrity and potentially causing cancer via faulty repair. Major DSB repair pathways in humans include homology-directed ... -
Evaluation of Alternate DNA Structures at c-MYC Fragile Region Associated with t(8;14) Translocation And Role of GNG Motifs During G-quadruplex Formation
(2017-10-11)Watson-Crick paired B-form DNA is the genetic material in most of the biological systems. Integrity of DNA is of utmost importance for the normal functioning of any organism. Various environmental factors, chemicals and ... -
Identification and Biochemical Characterization of Novel Inhibitors of Nonhomologous End Joining: Implications in DNA Double-Strand Break Repair and Cancer Therapy
To summarize, in the present study, we have synthesized and characterized three novel NHEJ inhibitors targeting DNA Ligase IV, with several fold better efficacy compared to SCR7 and thus potential to be developed as cancer ... -
Investigating DNA structural basis for fragility during chromosomal translocations associated with human B-cell lymphomas
Genome integrity is essential for normal cellular functions. Erroneous repair of DNA double-strand breaks (DSBs) could lead to chromosomal rearrangements, including chromosomal translocations that may result in altered ... -
Investigation of RAG1 in lymphoid and brain cells: Understanding mechanism and regulation
In summary, we show that RAG1 expression is regulated through a novel miRNA (miR- 29c) mediated mechanism and establish that as an additional mode of RAG1 regulation. Studies described in the thesis reveal that among the ... -
A Ligase IV/XRCC4-dependent single strand break repair pathway for the maintenance of A/T-rich regions during DNA replication in mammals
The DNA in our cells is under constant threat from various exogenous and endogenous sources. To ensure error free and faithful transmission of hereditary material, human cells employ several DNA repair pathways. Mammalian ... -
The Mechanism Of Fragility Of The BCL2 And HOX11 Breakpoint Regions During t(14;18) And t(10;14) Chromosomal Translocations In Lymphoid Cancers
(2014-08-05)Haematological cancers like leukemia and lymphoma are characterized by genetic abnormalities, specifically chromosomal translocations. Analyses of the translocation breakpoint regions in patients have shown that some loci ... -
Mechanism Of RAG Action As A Structure-Specific Nuclease : Implications In Genomic Instability In Lymphoid Cells
(2013-07-18)Recombination Activating Genes (RAGs) orchestrate the process called V (D) J recombination, which enables the vertebrate adaptive immune system to specifically recognize millions of antigens. During this recombination ... -
Mechanism of RAG Regulation During Its Physiological and Pathological Functions in Lymphoid Cells
(2018-08-11)RAGs (Recombination Activating Genes) are responsible for generation of antigen receptor diversity in case of B-cells and T-cells, through the process of combinatorial joining of different V (variable), D (diversity) and ... -
Mechanistic Insights into Radioprotection by Caffeine and Understanding Impact of Caffeine on Nonhomologous End Joining: Implications in Cancer
Maintenance of genome integrity is of utmost importance for the survival of any organism. Genetic instability is usually associated with various disorders, and it often leads to premature aging and predisposition to various ... -
Molecular Insights into Lymphoid Malignancy : Role of Transcription Factor BCL11B in T-cell Leukemia Genesis and Biochemical Characterization of DNA Binding Domain of RAG1
(2018-06-29)The lymphoid tissues consist of distinct cell subpopulations of B and T cell lineages and possess complex signaling pathways that are controlled by a myriad of molecular interactions. During the fine-tuned developmental ... -
Non-canonical functions of lymphoid-specific proteins AID and RAG1: Understanding mechanism, regulation, and implications in genomic instability
Recombination-activating genes (RAGs) and Activation-induced cytidine deaminase (AID) are lymphoid cell-specific proteins that play crucial roles in the development of adaptive immunity. Diversification of the immune system ... -
Physiological And Exogenous Means of Regulating DNA Damage Response : Insights into Mechanisms of DNA Repair And Genomic Instability
(2017-09-23)Maintenance of genomic integrity with high fidelity is of prime importance to any organism. An insult which may result in compromised genome integrity is prevented or its consequences are monitored by advanced cellular ... -
Role of mitochondria in cancer: G-quadruplex structures at fragile regions of the mitochondrial genome and a novel mode of BCL2 inhibition in cancer therapeutics
Mitochondrial functions are supported by proteins encoded by both the mitochondrial genome and several nuclear-encoded proteins targeted to mitochondria. Mutations affecting mitochondrial functions lead to cellular ... -
Understanding Nonhomologous DNA End Joining: Novel Insights Into Mechanism and Regulation
This study has provided new insights into the mechanistic details of NHEJ and showed that DNA sequence around the break site can be a factor in determining which proteins involved in NHEJ might be recruited with a higher ... -
Understanding the anticancer potential of inhibitor of BCL2, Disarib in Oral Cancer Cells and its Toxicological Evaluation in Rodents
Overexpression of BCL2 has been reported in several cancers, such as B-cell lymphomas, leukemias, colorectal adenocarcinoma, breast cancer, prostate cancer, and oral cancer, making it an excellent target for cancer treatment. ... -
Understanding the Long-term Impact and Mechanism of Action of Endosulfan, an Organochlorine Pesticide on Fertility, Development and Growth of Mice
Endosulfan (ES) is one of the major broad-spectrum organochlorine pesticides categorized as Class II (moderately hazardous) by WHO and Class I (highly acutely toxic) by US Environment Protection Agency. Although the use ... -
Understanding the Mechanism of DNA Double-Strand Break (DSB) Repair in Mitochondria and Various Mammalian Organs.
Various exogenous and endogenous agents can damage DNA. Exogenous agents include chemicals and radiation, such as ionizing radiations and UV rays, while endogenous agents include DNA replication errors, reactive oxygen ... -
Understanding the Mechanism of Double-strand Break Repair and Genome Fragility in Mammalian Mitochondria
Mitochondria are semiautonomous organelles in a cell as they have their own genome that replicates independently. It plays a major role in oxidative phosphorylation due to which mitochondrial DNA (mtDNA) is frequently ...