Alla Karpova

Oct 30, 2024 | nature.com | Reyka G. Jayasinghe |Michael Iglesia |John Herndon |Austin N. Southard-Smith |Jacqueline L. Mudd |Alla Karpova | +16 more

AbstractTo study the spatial interactions among cancer and non-cancer cells1, we here examined a cohort of 131 tumour sections from 78 cases across 6 cancer types by Visium spatial transcriptomics (ST). This was combined with 48 matched single-nucleus RNA sequencing samples and 22 matched co-detection by indexing (CODEX) samples. To describe tumour structures and habitats, we defined ‘tumour microregions’ as spatially distinct cancer cell clusters separated by stromal components.

Jun 2, 2024 | nature.com | Vidyani Suryadevara |Adam D. Hudgins |Alberto Pappalardo |Alla Karpova |Amit K. Dey |Birgit Schilling | +23 more

AbstractOnce considered a tissue culture-specific phenomenon, cellular senescence has now been linked to various biological processes with both beneficial and detrimental roles in humans, rodents and other species. Much of our understanding of senescent cell biology still originates from tissue culture studies, where each cell in the culture is driven to an irreversible cell cycle arrest.

Nov 1, 2023 | nature.com | Alla Karpova |Yize Li |Austin N. Southard-Smith |Michael Iglesia |Reyka G. Jayasinghe |Matthew Wyczalkowski | +17 more

AbstractChromatin accessibility is essential in regulating gene expression and cellular identity, and alterations in accessibility have been implicated in driving cancer initiation, progression and metastasis1,2,3,4. Although the genetic contributions to oncogenic transitions have been investigated, epigenetic drivers remain less understood.