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Updated: Aug 6, 2026

Analyzing Tumor and Tissue Distribution of Target Antigen Specific Therapeutic Antibody
Published on: May 16, 2020
Dual-recognizing antibodies targeting CEACAMs in the tumor microenvironment: towards more precise targeting
Jiayi Ye1,2,3, Yijun Zhao1,2,3, Shuyang Mao2,3,4
1Graduate School, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
Abstract:
The tumor microenvironment (TME) is a dynamic and constantly evolving milieu surrounding cancer cells, comprising numerous components that influence tumor growth. The Carcinoembryonic Antigen-Related Cell Adhesion Molecule (CEACAM) family has been found to be abnormally expressed in various cancers, and recent studies have highlighted its critical role in shaping and regulating the TME. Several antibody drugs targeting the CEACAM family have been developed over the last years. However, due to the physiological expression of CEACAMs in normal tissues, most of these targeted agents have yielded unsatisfactory clinical trial outcomes, characterized by significant toxicity and limited efficacy. In view of this, enhancing therapeutic efficacy while reducing adverse effects has become a focal point of current research. This review systematically summarizes the structural features of the CEACAM family and the intrinsic mechanistic differences underlying their tumor-promoting effects, and discusses the limitations of existing clinical drugs. Based on antibody optimization strategies, we propose a conceptual framework of "dual-recognition" antibodies and elaborate on precision targeting approaches at three levels-epitope, molecular, and environmental-to provide directional guidance for future investigations.
Insights
This review explores the Carcinoembryonic Antigen-Related Cell Adhesion Molecule (CEACAM) family
Area of Science:
- Oncology
- Immunology
- Molecular Biology
Background:
- The tumor microenvironment (TME) significantly influences cancer progression.
- The Carcinoembryonic Antigen-Related Cell Adhesion Molecule (CEACAM) family is aberrantly expressed in cancers, regulating the TME.
- Current CEACAM-targeting antibody drugs face challenges due to toxicity and limited efficacy from normal tissue expression.
Purpose of the Study:
- To systematically review CEACAM family structure and tumor-promoting mechanisms.
- To analyze limitations of existing CEACAM-targeting antibody drugs.
- To propose novel strategies for enhanced cancer therapy targeting the TME.
Main Methods:
- Literature review of CEACAM family structure, function, and TME regulation.
- Analysis of clinical trial data for CEACAM-targeting antibodies.
- Development of a conceptual framework for optimized antibody design.
Main Results:
- CEACAMs exhibit diverse structural features and mechanistic roles in tumor promotion.
- Existing antibody therapies show significant toxicity and limited efficacy due to off-target effects.
- A novel "dual-recognition" antibody framework is proposed for precision targeting.
Conclusions:
- Understanding CEACAMs' dual role in normal and tumor tissues is crucial.
- Optimizing antibody strategies by targeting epitopes, molecules, and the environment can improve efficacy and reduce toxicity.
- Precision targeting approaches offer a promising direction for future cancer therapeutics.
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