作者: Obara, Hisashi ; Yoshimoto, Mitsunori ; Sasaki, Masanori ; Yamashita, Toshihiko ; Teramoto, Atsushi ; Honmou, Osamu ; Hirota, Ryosuke ; Nagahama, Hiroshi ; Kocsis, Jeffery D ; Fukushi, Ryunosuke ; Kurihara, Kota

Spinal cord injury (SCI) can cause paralysis with a high disease burden with limited treatment options. A single intravenous infusion of mesenchymal stem cells (MSCs) improves motor function in rat SCI models, possibly through the induction of axonal sprouting and remyelination. Repeated infusions (thrice at weekly intervals) of MSCs were administered to rats with chronic SCI to determine if multiple-dosing regimens enhance motor improvement. Chronic SCI rats were randomized and infused with vehicle (vehicle), single MSC injection at week 6 (MSC-1) or repeatedly injections of MSCs at 6, 7, and 8 weeks (MSC-3) after SCI induction. In addition, a single high dose of MSCs (HD-MSC) equivalent to thrice the single dose was infused at week 6. Locomotor function, light and electron microscopy, immunohistochemistry and ex vivo diffusion tensor imaging were performed. Repeated infusion of MSCs (MSC-3) provided the greatest functional recovery compared to single and single high-dose infusions. The density of remyelinated axons in the injured spinal cord was the greatest in the MSC-3 group, followed by the MSC-1, HD-MSC and vehicle groups. Increased sprouting of the corticospinal tract and serotonergic axon density was the greatest in the MSC-3 group, followed by MSC-1, HD-MSC, and vehicle groups. Repeated infusion of MSCs over three weeks resulted in greater functional improvement than single administration of MSCs, even when the number of infused cells was tripled. MSC-treated rats showed axonal sprouting and remyelination in the chronic phase of SCI.

2023-05-01·Expert opinion on investigational drugs

Targeting leukemia inhibitory factor in pancreatic adenocarcinoma.

Review

作者: Starr, Jason S. ; Majeed, Umair ; Karime, Christian ; Wang, Jing ; Borad, Mitesh J. ; Babiker, Hani M.

INTRODUCTIONThe Leukemia Inhibitory Factor (LIF) is a member of the interleukin-6 (IL-6) cytokine family. Known to induce differentiation of myeloid leukemia cells, evidence has accumulated supporting its role in cancer evolution through regulating cell differentiation, renewal, and survival. LIF has recently emerged as a biomarker and therapeutic target for pancreatic ductal adenocarcinoma (PDAC). The first in-human clinical trial has shown promising safety profile and has suggested a potential role for LIF inhibitor in combination regimen.AREAS COVEREDHerein, we summarize, discuss, and give an expert opinion on the role of LIF in PDAC promotion, and its potential role as a biomarker and target of anti-cancer therapy. We conducted an exhaustive PubMed search for English-language articles published from 1 January 1970, to 1 August 2022.EXPERT OPINIONPDAC carries a devastating prognosis for patients, highlighting the need for advancing drug development. The results of the phase 1 trial with MSC-1 demonstrated tolerability and safety but modest efficacy. Future research should focus on investigating LIF targets in combination with current standard-of-care chemotherapy, and immunotherapy can be a promising approach. Further, larger multicenter clinical trials are needed to define the use of LIF as a new biomarker in PDAC patients.

2023-02-16·Clinical Cancer Research

Therapeutic Targeting of LIF Overcomes Macrophage-mediated Immunosuppression of the Local Tumor Microenvironment

Article

作者: Fransson, Johan ; Iurlaro, Raffaella ; Egorova, Olga ; Maetzel, Dorothea ; Anido, Judit ; Bonfill-Teixidor, Ester ; Huber-Ruano, Isabel ; Raman, Swetha ; Neva-Alejo, Almudena ; McGray, AJ Robert ; Bayliss, Peter ; Giblin, Patricia ; Arias, Alexandra ; Seoane, Joan ; Hallett, Robin M. ; Lau, Esther ; Julien, Jean-Philippe ; Beilschmidt, Melissa ; Bosch, Alexandre

AbstractPurpose:Leukemia inhibitory factor (LIF) is a multifunctional cytokine with numerous reported roles in cancer and is thought to drive tumor development and progression. Characterization of LIF and clinical-stage LIF inhibitors would increase our understanding of LIF as a therapeutic target.Experimental Design:We first tested the association of LIF expression with transcript signatures representing multiple processes regulating tumor development and progression. Next, we developed MSC-1, a high-affinity therapeutic antibody that potently inhibits LIF signaling and tested it in immune competent animal models of cancer.Results:LIF was associated with signatures of tumor-associated macrophages (TAM) across 7,769 tumor samples spanning 22 solid tumor indications. In human tumors, LIF receptor was highly expressed within the macrophage compartment and LIF treatment drove macrophages to acquire immunosuppressive capacity. MSC-1 potently inhibited LIF signaling by binding an epitope that overlaps with the gp130 receptor binding site on LIF. MSC-1 showed monotherapy efficacy in vivo and drove TAMs to acquire antitumor and proinflammatory function in syngeneic colon cancer mouse models. Combining MSC-1 with anti-PD1 leads to strong antitumor response and a long-term tumor-free survival in a significant proportion of treated mice.Conclusions:Overall, our findings highlight LIF as a therapeutic target for cancer immunotherapy.

100 项与 MSC1(SanBio) 相关的药物交易

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