A single dose of antibody-drug conjugate cures a stage 1 model of African trypanosomiasis
A single dose of antibody-drug conjugate cures a stage 1 model of African trypanosomiasis
复制标题
单剂抗体药物偶联物治愈非洲锥虫病第一阶段模型
DOI:
10.1101/547208
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
MacGregor P
中科院分区:
文献类型:
--
作者:
MacGregor P
Infections of humans and livestock with African trypanosomes are treated with drugs introduced decades ago that are not always fully effective and often have severe side effects. Here, the trypanosome haptoglobin-haemoglobin receptor (HpHbR) has been exploited as a route of uptake for an antibody-drug conjugate (ADC) that is completely effective againstTrypanosoma bruceiin the standard mouse model of infection. Recombinant human anti-HpHbR monoclonal antibodies were isolated and shown to be internalised in a receptor-dependent manner. Antibodies were conjugated to a pyrrolobenzodiazepine (PBD) toxin and killedT.brucei in vitroat picomolar concentrations. A single therapeutic dose (0.25 mg/kg) of a HpHbR antibody-PBD conjugate completely cured aT.bruceimouse infection within 2 days with no re-emergence of infection over a subsequent time course of 77 days. These experiments provide a demonstration of how ADCs can be exploited to treat protozoal diseases that desperately require new therapeutics.
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DOI:
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发表时间:
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期刊:
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期刊:
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