drug conjugate Articles
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The linker matters in antibody-drug conjugates - Case Study
It was Paul Ehrlich who first brought up the idea of creating a magic bullet that selectively delivers drugs to malicious tissues while sparing the healthy parts. Roughly a century later, researchers started to attach cytotoxic compounds through linkers to antibodies for a targeted drug delivery approach, given the highly selective binding properties of antibodies. It turned out though that ...
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Optimization of Three Elements of ADC Drugs
Structurally, an ADC consists of monoclonal antibodies (Antibody) that target specific antigens on tumor surfaces, cytotoxic drugs (drugs) that kill tumor cells, and linkers (Conjugate/ linkers) that conjugate cytotoxic drugs to antibodies. The link between the antibody and linker is controlled by the coupling method, which determines the DAR value of the drug and affects the stability and PK ...
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Find small and sleek single domain antibodies for next-gen antibody therapies - Case study
HcAbs are single chain antibodies lacking light chains, found naturally in camelids such as llamas and alpacas (along with conventional paired heavy and light chain IgG antibodies, at approximately 50% frequency). HcAbs are valuable for various antibody-based therapeutics, such as bispecific antibodies, antibody-drug conjugates and CAR-Ts. In addition, the decreased complexity of having only ...
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ADCs Customized Linkers
Antibody Drug Conjugates (ADCs) use targeting ability of monoclonal antibodies to deliver potent cytototoxic payloads to their intended target. The linker encompasses a conjugating functionality suitable for attachment to the antibody, a spacer unit that typically incorporates a hydrophilic element and a trigger which releases the potent cytototoxic warhead. The properties that an optimal linker ...
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Technical Talk: Explore Next-Generation Nuclear Localization Signal Therapeutics
Creative Biolabs, as a top-ranked solution provider of antibody-drug conjugate, scheduled a webinar about improved nuclear localization signal-therapeutics, which went live on January 21, 2022. Antibody-drug conjugate (ADC) has gained booming attention in the past 2021, with multiple international strategic purchases and breakthrough results of both preclinical and clinical trials. As a ...
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PEG Linkers for Antibody Drug Conjugates
Antibody-drug conjugate (ADC) is one of the fastest growing fields in tumor therapy, which consists of monoclonal antibody (Antibody), linker (Linker) and active drug (Payload). So far, there are only 15 drugs on the market in the world. However, with the development of some perfect antibody modification techniques, advanced site-specific coupling techniques and powerful small-molecule toxins, ...
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Bioconjugation Strategies for Enhancing Drug Delivery and Therapeutic Efficacy
In recent years, bioconjugation has emerged as a powerful strategy for improving drug delivery and enhancing therapeutic efficacy. By linking drugs to various biological entities, such as proteins, antibodies, nanoparticles, or targeting moieties, bioconjugation enables precise and targeted delivery of therapeutic agents to desired sites. This article aims to provide an overview of different ...
By BOC Sciences
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An Emerging Aim: ADC Target Protein - Nectin-4
The biologics license application (BLA) has been accepted for Enfortumab Vedotin for the treatment of locally advanced or metastatic urothelial carcinoma in patients who have previously received PD-1/PD-L1 inhibitors and platinum-containing chemotherapy. Enfortumab Vedotin is the first domestically submitted targeted antibody-drug conjugate that specifically targets Nectin-4. Enfortumab ...
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Clinical Pharmacology of Antibody-Drug Conjugates
Unlike the development of most small or large molecules, which typically measures only one part or the metabolite for pharmacokinetic analysis, multiple parts of ADCs need to be measured to characterize their PK properties. Therefore, a thorough understanding of the clinical pharmacology of ADCs is critical for selecting a safe and effective dose for patients. Biological Analysis of ADC In order ...
By BOC Sciences
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Antibody-Drug Conjugates For The Treatment of Prostate Cancer
Currently, ADC has played a significant role in the treatment of some malignant tumors, such as trastuzumab in the treatment of breast cancer, but its application in the treatment of prostate cancer (PCa) progress slowly. In recent years, ADC has made rapid progress in the treatment of metastatic castration-resistant prostate cancer (mCRPC). STEAP1, TROP2, PSMA, CD46, and B7-H3 are currently ...
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Brief Introduction of ADC Drug Production Technology
Drug-to-antibody ratio (DAR, drug-to-antibody ratio) The number of cytotoxic drugs connected to each antibody is the drug-to-antibody ratio (DAR). When the DAR increases, the drug metabolism rate of ADC drugs increases, the half-life decreases, and the systemic toxicity increases. Ideally, when the DAR is 4, the drug has the highest efficacy. Therefore, in actual production, the drugs with DAR ...
By BOC Sciences
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Antibody-Drug Conjugates: New Strategies of ADC Payloads
The concept of ADCs was first proposed by Nobel Prize winner Paul Ehrlich in 1913. But it was not until 1975, when hybridoma technology began to be used to produce monoclonal antibodies, that the era of ADC drug development truly began. Driven by increasingly mature technology, ADC drugs have gone through three iterations (Fig. 1). Although ADCs have gone through three iterations, current ...
By BOC Sciences
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Antibody Drug Conjugates: "Biological Missiles" For Targeting Cancer Therapy
Antibody-drug conjugates (ADCs) usually consist of monoclonal antibodies (mAbs) covalently linked to cytotoxic drugs via chemical linkers. With high specific targeting ability and strong killing effect, it has achieved precise and efficient removal of cancer cells, and has become one of the hot spots in the development of anticancer drugs. In 2000, the FDA first approved the ADC drug Mylotarg ...
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ADC Cleavable Linker : Classification and Mechanism of Action
Antibody-drug conjugates (ADCs), as emerging anticancer drugs, can deliver highly cytotoxic molecules directly to cancer cells to kill them. ADC is a monoclonal antibody covalently bound to cytotoxic chemical substances (payload) through linker. ADC linker plays a key role in the therapeutic effect of ADC, and its characteristics greatly affect the therapeutic index, pharmacodynamics and ...
By BOC Sciences
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Comparison and Analysis of SMDC, ADC, and DAC
In order to more effectively deliver chemotherapy drugs, Small Molecule Drug Conjugates (SMDC), Antibody Drug Conjugates (ADC), and Degradation Antibody Conjugates (DAC) have been successively explored and developed, enhancing the therapeutic index while providing selective delivery. What are their similarities and differences? What are their respective advantages? What is the current status of ...
By BOC Sciences
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How to Design a Good ADC Drug
In the past ten years, the number of antibody drug conjugates (ADCs) entering clinical trials has steadily increased. Currently, 9 ADCs have been approved, of which 5 are used for hematoma and 4 for solid tumor treatment. After more than 20 years of development, ADC biopharmaceuticals are becoming the main force in the treatment of cancer. Currently, one of the most important challenges when ...
By BOC Sciences
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Biopharma PEG’s Azide PEG Series for Pharmaceuticals
Biopharma PEG, a leading innovator in polyethylene glycol (PEG) derivatives, proudly introduces its featured Azide PEG series, which can be used in drug development, click chemistry, ADCs (Antibody Drug Conjugates), PROTACs (Proteolysis Targeting Chimeras), and beyond. This Azide PEG features monodispersed PEGs such as N3-PEG4-OH, N3-PEG3-COOH, N3-PEG11-NH2, N3-PEG3-NHS ester, ...
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CMC Regulatory Considerations for ADCs
Antibody drug conjugates (ADCs) are a new class of biopharmaceuticals that use monoclonal antibodies to target tumor cells to deliver potent cytotoxic drugs. So far, a total of 15 ADC drugs have been approved worldwide, of which the FDA has approved 13 ADCs for various cancers, including Adcetris®, Kadcyla®, Besponsa®, Mylotarg®, Lumoxiti®, Polivy®, Padcev®, Enhertu ®, Trodelvy® and Blenrep®. As ...
By BOC Sciences
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Representative structures of FDA-approved ADCs
Since they were originally explored in animal models in the 1960s, antibody-drug conjugates (ADCs) have seen many booms. The initial ADC clinical studies took place in the 1980s, and Mylotarg, the first ADC drug, was approved in 2000. The removal of Mylotarg, however, came as a huge shock to the industry, and it was relaunched in 2017. The launch of a number of clinically and commercially ...
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Biopharma PEG Supplies PEG Products For Click Chemistry Reactions
What is "click chemistry"? "Click Chemistry", this is a literary name given to this kind of reaction by the Nobel Prize winner K.Burry Sharless, when the cards are put together, "click" (click). Simply put, it is to add two structures to two molecules respectively, and these two structures can be specifically combined to synthesize the required chemical molecules. One of the most famous ...
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