Publications by authors named "D K Sampath"

Article Synopsis
  • Angioimmunoblastic T-cell lymphoma (AITL) arises from follicular helper T (Tfh) cells and is difficult to treat due to its resistance to current therapies.
  • The progression of AITL involves a complex interaction between neoplastic Tfh cells and B-cells in the tumor microenvironment, similar to processes in germinal centers.
  • Recurrent mutations like TET2 and DNMT3A in both Tfh and B-cells hint that their relationship could be a potential target for new treatments, highlighting important signaling mechanisms in AITL's pathobiology.
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Article Synopsis
  • * Inavolisib (GDC-0077) is a selective PI3Kα inhibitor that efficiently degrades mutated p110α proteins and has been studied for its absorption, distribution, metabolism, and excretion (ADME) characteristics.
  • * Preclinical studies showed that inavolisib is effective against mutant KPL-4 breast cancer models, and predictions suggest a 3 mg dose could yield a clinical response; it is currently in phase 3 trials.
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Patients with chronic lymphocytic leukemia (CLL) respond well to initial treatment with the Bcell lymphoma 2 (BCL2) inhibitor venetoclax. Upon relapse, they often retain sensitivity to BCL2 targeting, but durability of response remains a concern. We hypothesize that targeting both BCL2 and B-cell lymphoma-extra large (BCLXL) will be a successful strategy to treat CLL, including for patients who relapse on venetoclax.

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Macroscopic loss of extracellular matrix can lead to chronic defects in skin wound healing, but supplementation of extracellular matrix holds promise for facilitating wound closure, particularly in diabetic wound healing. We recently showed that the extracellular matrix proteoglycan agrin accelerates cutaneous wound healing by improving mechanoperception of migrating keratinocytes and allowing them to respond to mechanical stresses through matrix metalloproteinase 12 (MMP12). RNA-sequencing analysis revealed that in addition to a disorganized extracellular matrix, agrin-depleted skin cells have impaired YAP/TAZ transcriptional outcomes, leading us to hypothesize that YAP/TAZ, as central mechanosensors, drive the functionality of agrin-MMP12 signaling during cutaneous wound repair.

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Bruton's tyrosine kinase (BTK) inhibitors are effective for the treatment of chronic lymphocytic leukemia (CLL) due to BTK's role in B cell survival and proliferation. Treatment resistance is most commonly caused by the emergence of the hallmark mutation that inhibits drug binding. In this study, we aimed to investigate whether the presence of additional CLL driver mutations in cancer subclones harboring a mutation accelerates subclone expansion.

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