Publications by authors named "Ramakrishnan Melarkode"

Article Synopsis
  • * The biosimilar MYL-1402O was compared to reference BEV from the EU and US through physical and functional tests, showing that it has the same amino acid sequence and similar modifications.
  • * Results indicate that MYL-1402O has comparable functionality to reference BEV based on several tests, supporting that it is highly similar and paving the way for its further clinical development.
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Preclinical comparative similarity studies of trastuzumab-dkst, a Herceptin biosimilar, are reported. Primary sequence and higher order structure and pharmacological mechanisms of action were compared using multiple techniques. Pharmacokinetics and repeat-dose toxicity were assessed in cynomolgus monkeys.

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Insulin glargine is a long-acting analogue of human insulin that has been used to manage hyperglycemia in patients with diabetes mellitus (DM) for nearly 20 years. Insulin glargine has a relatively constant concentration-time profile that mimics basal levels of insulin and allows for once-daily administration. MYL-1501D is a biosimilar insulin glargine designed to offer greater access of insulin glargine to patients, with comparable efficacy and safety to the marketed reference product.

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Article Synopsis
  • The text indicates a correction has been made to the original research article with DOI 10.1371/journal.pone.0180088.
  • This correction likely addresses factual errors, methodology issues, or clarifications that improve the overall integrity of the original study.
  • The DOI provides a unique identifier for accessing the corrected article for further details and context.
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Recombinant biopharmaceuticals can induce generation of anti-drug antibodies, which could potentially neutralize therapeutic drug activity. In this report, we describe development and validation of a cell-based assay for detection of neutralizing antibodies (Nab) against insulin and insulin analogues. In order to achieve clinically meaningful sensitivity the method used an early signalling event, insulin induced insulin receptor phosphorylation as the endpoint.

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Article Synopsis
  • Tregopil is a new PEGylated human insulin being developed for oral delivery in diabetes treatment, focused on creating a specific method to measure its levels in patients taking Glargine.
  • A sensitive electrochemiluminescent ELISA method was successfully created, capable of quantifying Tregopil in serum with a low limit of detection.
  • This method demonstrates minimal cross-reactivity with Glargine, making it a reliable tool for accurately measuring Tregopil in Type 1 diabetes patients during clinical studies.
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CD6 is associated with T-cell modulation and is implicated in several autoimmune diseases. We previously demonstrated that Itolizumab, a CD6 domain 1 (CD6D1) specific humanized monoclonal antibody, inhibited the proliferation and cytokine production by T lymphocytes stimulated with anti-CD3 antibody or when co-stimulated with ALCAM. Aberrant IL-17 producing CD4+ helper T-cells (Th17) have been identified as pivotal for the pathogenesis of certain inflammatory autoimmune disorders, including psoriasis.

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Nimotuzumab, an anti-epidermal growth factor receptor (anti-EGFR) monoclonal antibody, has been used extensively in many solid tumors and confers significant survival advantage. The antibody has limited skin toxicity and is generally well tolerated. Similar to other anti-EGFR therapies, patients may relapse a few months after treatment.

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Head and neck cancer associated with the chewing of betel preparations, including tobacco, is common to South East Asia. We report a Phase IIB study in which ninety-two treatment naïve patients with advanced squamous cell carcinoma received standard therapy with or without an anti-Epidermal Growth Factor Receptor (EGFR) monoclonal antibody (Nimotuzumab). In pretreatment samples, the tissue expression of ErbB family proteins and downstream molecules, including their association with clinical response and survival.

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Nimotuzumab is a humanized therapeutic monoclonal antibody against epidermal growth factor receptor (EGFR). Clinical trials are ongoing globally to evaluate nimotuzumab in different indications. Nimotuzumab has been granted approval for use in squamous cell carcinoma of head and neck (SCCHN), glioma and nasopharyngeal cancer in different countries.

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Exendin-4 is a naturally occurring 39 amino acid peptide that is useful for the control of Type 2 diabetes. Recombinant Exendin-4, with an extra glycine at the carboxy-terminus (Exdgly), was expressed in the methylotropic yeast Pichia pastoris. A high proportion of the Exdgly molecules secreted into medium were found to be clipped, lacking the first two amino acids (His-Gly) from the N-terminus.

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Article Synopsis
  • AAA proteins are involved in remodeling other proteins, influencing various biological processes through the coupling of substrate binding and conformational changes driven by nucleotide binding and hydrolysis.
  • In the study focused on the AAA protein Hsp104, engaging with polypeptides at a specific region induces a conformational change that drives ATP hydrolysis in another domain of the protein.
  • This interdomain communication is essential for function and can be disrupted by mutations or antibodies that block the middle region, underscoring its importance in the protein's signaling mechanism.
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