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. 2024 Dec 9.
doi: 10.1038/s41587-024-02453-3. Online ahead of print.

Ovarian tumor cells gain competitive advantage by actively reducing the cellular fitness of microenvironment cells

Esha Madan #  1   2   3   4 António M Palma #  5   6   7   8 Vignesh Vudatha #  9   5   8 Amit Kumar #  5   6   7 Praveen Bhoopathi #  9   5 Jochen Wilhelm #  10   11 Tytus Bernas  12 Patrick C Martin  13 Gaurav Bilolikar  5   7 Aenya Gogna  14 Maria Leonor Peixoto  8   15 Isabelle Dreier  11 Thais Fenz Araujo  16 Elena Garre  16 Anna Gustafsson  16 Kalpana Deepa Priya Dorayappan  17 Narsimha Mamidi  18 Zhaoyu Sun  19 Michail Yekelchyk  11 Davide Accardi  15 Amalie Lykke Olsen  20   21 Lin Lin  20   21 Asaf Ashkenazy Titelman  22   23 Michael Bianchi  24 Phil Jessmon  24 Elnaz Abbasi Farid  25   26 Anjan K Pradhan  7 Lena Neufeld  27 Eilam Yeini  27 Santanu Maji  6   7 Christopher J Pelham  28 Hyobin Kim  13 Daniel Oh  13 Hans Olav Rolfsnes  29 Rita C Marques  15 Amy Lu  5   7 Masaki Nagane  30 Sahil Chaudhary  9   5 Kartik Gupta  9   5 Keshav C Gogna  9   5 Ana Bigio  15 Karthikeya Bhoopathi  5   7 Padmanabhan Mannangatti  5   6   7 K Gopinath Achary  31 Javed Akhtar  31 Sara Belião  15 Swadesh Das  5   6   7 Isabel Correia  32 Cláudia L da Silva  8 Arsénio M Fialho  8 Michael J Poellmann  33 Kaila Javius-Jones  33 Adam M Hawkridge  5   34 Sanya Pal  35 Kumari S Shree  5   7 Emad A Rakha  36   37 Sambhav Khurana  5   7 Gaoping Xiao  38 Dongyu Zhang  9   5 Arjun Rijal  5 Charles Lyons  5 Steven R Grossman  39 David P Turner  9   5 Raghavendra Pillappa  40 Karanvir Prakash  41 Gaurav Gupta  42 Gary L W G Robinson  43 Jennifer Koblinski  5   44 Hongjun Wang  45   46 Gita Singh  47 Sujay Singh  47 Sagar Rayamajhi  48 Manny D Bacolod  49 Hope Richards  44 Sadia Sayeed  44 Katherine P Klein  50 David Chelmow  50 Ronit Satchi-Fainaro  27   51 Karuppaiyah Selvendiran  17 Denise Connolly  52   53 Frits Alan Thorsen  29 Rolf Bjerkvig  29   54   55   56 Kenneth P Nephew  25   26 Michael O Idowu  44   57 Mark P Kühnel  58   59 Christopher Moskaluk  60 Seungpyo Hong  18   33   61 William L Redmond  19 Göran Landberg  16 Antonio Lopez-Beltran  15   62   63   64 Andrew S Poklepovic  5   65 Arun Sanyal  66 Paul B Fisher  5   6   7 George M Church  22   23 Usha Menon  67 Ronny Drapkin  68 Andrew K Godwin  48   69   70 Yonglun Luo  20   21 Maximilian Ackermann  71   72 Alexandar Tzankov  73 Kirsten D Mertz  73 Danny Jonigk  58   59 Allan Tsung  74 David Sidransky  75   76 Jose Trevino  9   5 Arturo P Saavedra  9   77 Robert Winn  9   5   78 Kyoung Jae Won  12 Eduardo Moreno  15 Rajan Gogna  79   80   81   82
Affiliations

Ovarian tumor cells gain competitive advantage by actively reducing the cellular fitness of microenvironment cells

Esha Madan et al. Nat Biotechnol. .

Abstract

Cell competition and fitness comparison between cancer and tumor microenvironment (TME) cells determine oncogenic fate. Our previous study established a role for human Flower isoforms as fitness fingerprints, where the expression of Flower Win isoforms in tumor cells leads to growth advantage over TME cells expressing Lose isoforms. Here we demonstrate that the expression of Flower Lose and reduced microenvironment fitness is not a pre-existing condition but, rather, a cancer-induced phenomenon. Cancer cells actively reduce TME fitness by the exosome-mediated release of a cancer-specific long non-coding RNA, Tu-Stroma, which controls the splicing of the Flower gene in the TME cells and expression of Flower Lose isoform, which leads to reduced fitness status. This mechanism controls cancer growth, metastasis and host survival in ovarian cancer. Targeting Flower protein with humanized monoclonal antibody (mAb) in mice significantly reduces cancer growth and metastasis and improves survival. Pre-treatment with Flower mAb protects intraperitoneal organs from developing lesions despite the presence of aggressive tumor cells.

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Conflict of interest statement

Competing interests: All authors declare no competing interests.

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