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Bone Metastasis

Targeting initial tumour–osteoclast spatiotemporal interaction to prevent bone metastasis



Bone is the most common site of metastasis, and although low proliferation and immunoediting at the early stage make existing treatment modalities less effective, the microenvironment-inducing behaviour could be a target for early intervention.

Here we report on a spatiotemporal coupling interaction between tumour cells and osteoclasts, and named the tumour-associated osteoclast ‘tumasteoclast’—a subtype of osteoclasts in bone metastases induced by tumour-migrasome-mediated cytoplasmic transfer. We subsequently propose an in situ decoupling–killing strategy in which tetracycline-modified nanoliposomes encapsulating sodium bicarbonate and sodium hydrogen phosphate are designed to specifically release high concentrations of hydrogen phosphate ions triggered by tumasteoclasts, which depletes calcium ions and forms calcium-phosphorus crystals.

This can inhibit the formation of migrasomes for decoupling and disrupt cell membrane for killing, thereby achieving early prevention of bone metastasis. This study provides a research model for exploring tumour cell behaviour in detail and a proof-of-concept for behaviour-targeting strategy.

bone metastasis, skeletal-related events, cancer spread to bone, osteolytic lesions, osteoblastic lesions, bone pain, bone resorption, bone remodeling, tumor microenvironment, bone-targeted therapy, bisphosphonates, denosumab, bone scan, radionuclide therapy, pathological fracture, spinal cord compression, metastatic breast cancer, metastatic prostate cancer, bone marrow involvement, cancer-induced bone disease

#BoneMetastasis, #CancerSpread, #SkeletalHealth, #BoneLesions, #BonePain, #BoneOncology, #TumorInBone, #BoneTherapy, #Osteolytic, #Osteoblastic, #BoneMarkers, #Bisphosphonates, #Denosumab, #BoneScan, #CancerResearch, #OncologyCare, #MetastaticCancer, #BoneComplications, #SpinalCompression, #CancerTreatment

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